1 //===-- Process.cpp ---------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
13 #include "llvm/Support/ScopedPrinter.h"
14 #include "llvm/Support/Threading.h"
16 #include "Plugins/Process/Utility/InferiorCallPOSIX.h"
17 #include "lldb/Breakpoint/BreakpointLocation.h"
18 #include "lldb/Breakpoint/StoppointCallbackContext.h"
19 #include "lldb/Core/Debugger.h"
20 #include "lldb/Core/Module.h"
21 #include "lldb/Core/ModuleSpec.h"
22 #include "lldb/Core/PluginManager.h"
23 #include "lldb/Core/StreamFile.h"
24 #include "lldb/Expression/DiagnosticManager.h"
25 #include "lldb/Expression/IRDynamicChecks.h"
26 #include "lldb/Expression/UserExpression.h"
27 #include "lldb/Expression/UtilityFunction.h"
28 #include "lldb/Host/ConnectionFileDescriptor.h"
29 #include "lldb/Host/FileSystem.h"
30 #include "lldb/Host/Host.h"
31 #include "lldb/Host/HostInfo.h"
32 #include "lldb/Host/OptionParser.h"
33 #include "lldb/Host/Pipe.h"
34 #include "lldb/Host/Terminal.h"
35 #include "lldb/Host/ThreadLauncher.h"
36 #include "lldb/Interpreter/CommandInterpreter.h"
37 #include "lldb/Interpreter/OptionArgParser.h"
38 #include "lldb/Interpreter/OptionValueProperties.h"
39 #include "lldb/Symbol/Function.h"
40 #include "lldb/Symbol/Symbol.h"
41 #include "lldb/Target/ABI.h"
42 #include "lldb/Target/CPPLanguageRuntime.h"
43 #include "lldb/Target/DynamicLoader.h"
44 #include "lldb/Target/InstrumentationRuntime.h"
45 #include "lldb/Target/JITLoader.h"
46 #include "lldb/Target/JITLoaderList.h"
47 #include "lldb/Target/LanguageRuntime.h"
48 #include "lldb/Target/MemoryHistory.h"
49 #include "lldb/Target/MemoryRegionInfo.h"
50 #include "lldb/Target/ObjCLanguageRuntime.h"
51 #include "lldb/Target/OperatingSystem.h"
52 #include "lldb/Target/Platform.h"
53 #include "lldb/Target/Process.h"
54 #include "lldb/Target/RegisterContext.h"
55 #include "lldb/Target/StopInfo.h"
56 #include "lldb/Target/StructuredDataPlugin.h"
57 #include "lldb/Target/SystemRuntime.h"
58 #include "lldb/Target/Target.h"
59 #include "lldb/Target/TargetList.h"
60 #include "lldb/Target/Thread.h"
61 #include "lldb/Target/ThreadPlan.h"
62 #include "lldb/Target/ThreadPlanBase.h"
63 #include "lldb/Target/UnixSignals.h"
64 #include "lldb/Utility/Event.h"
65 #include "lldb/Utility/Log.h"
66 #include "lldb/Utility/NameMatches.h"
67 #include "lldb/Utility/SelectHelper.h"
68 #include "lldb/Utility/State.h"
71 using namespace lldb_private;
72 using namespace std::chrono;
74 // Comment out line below to disable memory caching, overriding the process
75 // setting target.process.disable-memory-cache
76 #define ENABLE_MEMORY_CACHING
78 #ifdef ENABLE_MEMORY_CACHING
79 #define DISABLE_MEM_CACHE_DEFAULT false
81 #define DISABLE_MEM_CACHE_DEFAULT true
84 class ProcessOptionValueProperties : public OptionValueProperties {
86 ProcessOptionValueProperties(const ConstString &name)
87 : OptionValueProperties(name) {}
89 // This constructor is used when creating ProcessOptionValueProperties when
90 // it is part of a new lldb_private::Process instance. It will copy all
91 // current global property values as needed
92 ProcessOptionValueProperties(ProcessProperties *global_properties)
93 : OptionValueProperties(*global_properties->GetValueProperties()) {}
95 const Property *GetPropertyAtIndex(const ExecutionContext *exe_ctx,
97 uint32_t idx) const override {
98 // When getting the value for a key from the process options, we will
99 // always try and grab the setting from the current process if there is
100 // one. Else we just use the one from this instance.
102 Process *process = exe_ctx->GetProcessPtr();
104 ProcessOptionValueProperties *instance_properties =
105 static_cast<ProcessOptionValueProperties *>(
106 process->GetValueProperties().get());
107 if (this != instance_properties)
108 return instance_properties->ProtectedGetPropertyAtIndex(idx);
111 return ProtectedGetPropertyAtIndex(idx);
115 static constexpr PropertyDefinition g_properties[] = {
116 {"disable-memory-cache", OptionValue::eTypeBoolean, false,
117 DISABLE_MEM_CACHE_DEFAULT, nullptr, {},
118 "Disable reading and caching of memory in fixed-size units."},
119 {"extra-startup-command", OptionValue::eTypeArray, false,
120 OptionValue::eTypeString, nullptr, {},
121 "A list containing extra commands understood by the particular process "
123 "For instance, to turn on debugserver logging set this to "
124 "\"QSetLogging:bitmask=LOG_DEFAULT;\""},
125 {"ignore-breakpoints-in-expressions", OptionValue::eTypeBoolean, true, true,
127 "If true, breakpoints will be ignored during expression evaluation."},
128 {"unwind-on-error-in-expressions", OptionValue::eTypeBoolean, true, true,
129 nullptr, {}, "If true, errors in expression evaluation will unwind "
130 "the stack back to the state before the call."},
131 {"python-os-plugin-path", OptionValue::eTypeFileSpec, false, true, nullptr,
132 {}, "A path to a python OS plug-in module file that contains a "
133 "OperatingSystemPlugIn class."},
134 {"stop-on-sharedlibrary-events", OptionValue::eTypeBoolean, true, false,
136 "If true, stop when a shared library is loaded or unloaded."},
137 {"detach-keeps-stopped", OptionValue::eTypeBoolean, true, false, nullptr,
138 {}, "If true, detach will attempt to keep the process stopped."},
139 {"memory-cache-line-size", OptionValue::eTypeUInt64, false, 512, nullptr,
140 {}, "The memory cache line size"},
141 {"optimization-warnings", OptionValue::eTypeBoolean, false, true, nullptr,
142 {}, "If true, warn when stopped in code that is optimized where "
143 "stepping and variable availability may not behave as expected."},
144 {"stop-on-exec", OptionValue::eTypeBoolean, true, true,
146 "If true, stop when a shared library is loaded or unloaded."}};
149 ePropertyDisableMemCache,
150 ePropertyExtraStartCommand,
151 ePropertyIgnoreBreakpointsInExpressions,
152 ePropertyUnwindOnErrorInExpressions,
153 ePropertyPythonOSPluginPath,
154 ePropertyStopOnSharedLibraryEvents,
155 ePropertyDetachKeepsStopped,
156 ePropertyMemCacheLineSize,
157 ePropertyWarningOptimization,
161 ProcessProperties::ProcessProperties(lldb_private::Process *process)
163 m_process(process) // Can be nullptr for global ProcessProperties
165 if (process == nullptr) {
166 // Global process properties, set them up one time
167 m_collection_sp.reset(
168 new ProcessOptionValueProperties(ConstString("process")));
169 m_collection_sp->Initialize(g_properties);
170 m_collection_sp->AppendProperty(
171 ConstString("thread"), ConstString("Settings specific to threads."),
172 true, Thread::GetGlobalProperties()->GetValueProperties());
174 m_collection_sp.reset(
175 new ProcessOptionValueProperties(Process::GetGlobalProperties().get()));
176 m_collection_sp->SetValueChangedCallback(
177 ePropertyPythonOSPluginPath,
178 ProcessProperties::OptionValueChangedCallback, this);
182 ProcessProperties::~ProcessProperties() = default;
184 void ProcessProperties::OptionValueChangedCallback(void *baton,
185 OptionValue *option_value) {
186 ProcessProperties *properties = (ProcessProperties *)baton;
187 if (properties->m_process)
188 properties->m_process->LoadOperatingSystemPlugin(true);
191 bool ProcessProperties::GetDisableMemoryCache() const {
192 const uint32_t idx = ePropertyDisableMemCache;
193 return m_collection_sp->GetPropertyAtIndexAsBoolean(
194 nullptr, idx, g_properties[idx].default_uint_value != 0);
197 uint64_t ProcessProperties::GetMemoryCacheLineSize() const {
198 const uint32_t idx = ePropertyMemCacheLineSize;
199 return m_collection_sp->GetPropertyAtIndexAsUInt64(
200 nullptr, idx, g_properties[idx].default_uint_value);
203 Args ProcessProperties::GetExtraStartupCommands() const {
205 const uint32_t idx = ePropertyExtraStartCommand;
206 m_collection_sp->GetPropertyAtIndexAsArgs(nullptr, idx, args);
210 void ProcessProperties::SetExtraStartupCommands(const Args &args) {
211 const uint32_t idx = ePropertyExtraStartCommand;
212 m_collection_sp->SetPropertyAtIndexFromArgs(nullptr, idx, args);
215 FileSpec ProcessProperties::GetPythonOSPluginPath() const {
216 const uint32_t idx = ePropertyPythonOSPluginPath;
217 return m_collection_sp->GetPropertyAtIndexAsFileSpec(nullptr, idx);
220 void ProcessProperties::SetPythonOSPluginPath(const FileSpec &file) {
221 const uint32_t idx = ePropertyPythonOSPluginPath;
222 m_collection_sp->SetPropertyAtIndexAsFileSpec(nullptr, idx, file);
225 bool ProcessProperties::GetIgnoreBreakpointsInExpressions() const {
226 const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions;
227 return m_collection_sp->GetPropertyAtIndexAsBoolean(
228 nullptr, idx, g_properties[idx].default_uint_value != 0);
231 void ProcessProperties::SetIgnoreBreakpointsInExpressions(bool ignore) {
232 const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions;
233 m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, ignore);
236 bool ProcessProperties::GetUnwindOnErrorInExpressions() const {
237 const uint32_t idx = ePropertyUnwindOnErrorInExpressions;
238 return m_collection_sp->GetPropertyAtIndexAsBoolean(
239 nullptr, idx, g_properties[idx].default_uint_value != 0);
242 void ProcessProperties::SetUnwindOnErrorInExpressions(bool ignore) {
243 const uint32_t idx = ePropertyUnwindOnErrorInExpressions;
244 m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, ignore);
247 bool ProcessProperties::GetStopOnSharedLibraryEvents() const {
248 const uint32_t idx = ePropertyStopOnSharedLibraryEvents;
249 return m_collection_sp->GetPropertyAtIndexAsBoolean(
250 nullptr, idx, g_properties[idx].default_uint_value != 0);
253 void ProcessProperties::SetStopOnSharedLibraryEvents(bool stop) {
254 const uint32_t idx = ePropertyStopOnSharedLibraryEvents;
255 m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, stop);
258 bool ProcessProperties::GetDetachKeepsStopped() const {
259 const uint32_t idx = ePropertyDetachKeepsStopped;
260 return m_collection_sp->GetPropertyAtIndexAsBoolean(
261 nullptr, idx, g_properties[idx].default_uint_value != 0);
264 void ProcessProperties::SetDetachKeepsStopped(bool stop) {
265 const uint32_t idx = ePropertyDetachKeepsStopped;
266 m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, stop);
269 bool ProcessProperties::GetWarningsOptimization() const {
270 const uint32_t idx = ePropertyWarningOptimization;
271 return m_collection_sp->GetPropertyAtIndexAsBoolean(
272 nullptr, idx, g_properties[idx].default_uint_value != 0);
275 bool ProcessProperties::GetStopOnExec() const {
276 const uint32_t idx = ePropertyStopOnExec;
277 return m_collection_sp->GetPropertyAtIndexAsBoolean(
278 nullptr, idx, g_properties[idx].default_uint_value != 0);
281 void ProcessInstanceInfo::Dump(Stream &s, Platform *platform) const {
283 if (m_pid != LLDB_INVALID_PROCESS_ID)
284 s.Printf(" pid = %" PRIu64 "\n", m_pid);
286 if (m_parent_pid != LLDB_INVALID_PROCESS_ID)
287 s.Printf(" parent = %" PRIu64 "\n", m_parent_pid);
290 s.Printf(" name = %s\n", m_executable.GetFilename().GetCString());
291 s.PutCString(" file = ");
292 m_executable.Dump(&s);
295 const uint32_t argc = m_arguments.GetArgumentCount();
297 for (uint32_t i = 0; i < argc; i++) {
298 const char *arg = m_arguments.GetArgumentAtIndex(i);
300 s.Printf(" arg[%u] = %s\n", i, arg);
302 s.Printf("arg[%u] = %s\n", i, arg);
306 s.Format("{0}", m_environment);
308 if (m_arch.IsValid()) {
309 s.Printf(" arch = ");
310 m_arch.DumpTriple(s);
314 if (m_uid != UINT32_MAX) {
315 cstr = platform->GetUserName(m_uid);
316 s.Printf(" uid = %-5u (%s)\n", m_uid, cstr ? cstr : "");
318 if (m_gid != UINT32_MAX) {
319 cstr = platform->GetGroupName(m_gid);
320 s.Printf(" gid = %-5u (%s)\n", m_gid, cstr ? cstr : "");
322 if (m_euid != UINT32_MAX) {
323 cstr = platform->GetUserName(m_euid);
324 s.Printf(" euid = %-5u (%s)\n", m_euid, cstr ? cstr : "");
326 if (m_egid != UINT32_MAX) {
327 cstr = platform->GetGroupName(m_egid);
328 s.Printf(" egid = %-5u (%s)\n", m_egid, cstr ? cstr : "");
332 void ProcessInstanceInfo::DumpTableHeader(Stream &s, Platform *platform,
333 bool show_args, bool verbose) {
335 if (show_args || verbose)
341 s.Printf("PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE "
344 s.PutCString("====== ====== ========== ========== ========== ========== "
345 "======================== ============================\n");
347 s.Printf("PID PARENT USER TRIPLE %s\n", label);
348 s.PutCString("====== ====== ========== ======================== "
349 "============================\n");
353 void ProcessInstanceInfo::DumpAsTableRow(Stream &s, Platform *platform,
354 bool show_args, bool verbose) const {
355 if (m_pid != LLDB_INVALID_PROCESS_ID) {
357 s.Printf("%-6" PRIu64 " %-6" PRIu64 " ", m_pid, m_parent_pid);
359 StreamString arch_strm;
360 if (m_arch.IsValid())
361 m_arch.DumpTriple(arch_strm);
364 cstr = platform->GetUserName(m_uid);
366 cstr[0]) // Watch for empty string that indicates lookup failed
367 s.Printf("%-10s ", cstr);
369 s.Printf("%-10u ", m_uid);
371 cstr = platform->GetGroupName(m_gid);
373 cstr[0]) // Watch for empty string that indicates lookup failed
374 s.Printf("%-10s ", cstr);
376 s.Printf("%-10u ", m_gid);
378 cstr = platform->GetUserName(m_euid);
380 cstr[0]) // Watch for empty string that indicates lookup failed
381 s.Printf("%-10s ", cstr);
383 s.Printf("%-10u ", m_euid);
385 cstr = platform->GetGroupName(m_egid);
387 cstr[0]) // Watch for empty string that indicates lookup failed
388 s.Printf("%-10s ", cstr);
390 s.Printf("%-10u ", m_egid);
392 s.Printf("%-24s ", arch_strm.GetData());
394 s.Printf("%-10s %-24s ", platform->GetUserName(m_euid),
395 arch_strm.GetData());
398 if (verbose || show_args) {
399 const uint32_t argc = m_arguments.GetArgumentCount();
401 for (uint32_t i = 0; i < argc; i++) {
404 s.PutCString(m_arguments.GetArgumentAtIndex(i));
408 s.PutCString(GetName());
415 Status ProcessLaunchCommandOptions::SetOptionValue(
416 uint32_t option_idx, llvm::StringRef option_arg,
417 ExecutionContext *execution_context) {
419 const int short_option = m_getopt_table[option_idx].val;
421 switch (short_option) {
422 case 's': // Stop at program entry point
423 launch_info.GetFlags().Set(eLaunchFlagStopAtEntry);
426 case 'i': // STDIN for read only
429 if (action.Open(STDIN_FILENO, FileSpec(option_arg), true, false))
430 launch_info.AppendFileAction(action);
434 case 'o': // Open STDOUT for write only
437 if (action.Open(STDOUT_FILENO, FileSpec(option_arg), false, true))
438 launch_info.AppendFileAction(action);
442 case 'e': // STDERR for write only
445 if (action.Open(STDERR_FILENO, FileSpec(option_arg), false, true))
446 launch_info.AppendFileAction(action);
450 case 'p': // Process plug-in name
451 launch_info.SetProcessPluginName(option_arg);
454 case 'n': // Disable STDIO
457 const FileSpec dev_null(FileSystem::DEV_NULL);
458 if (action.Open(STDIN_FILENO, dev_null, true, false))
459 launch_info.AppendFileAction(action);
460 if (action.Open(STDOUT_FILENO, dev_null, false, true))
461 launch_info.AppendFileAction(action);
462 if (action.Open(STDERR_FILENO, dev_null, false, true))
463 launch_info.AppendFileAction(action);
468 launch_info.SetWorkingDirectory(FileSpec(option_arg));
471 case 't': // Open process in new terminal window
472 launch_info.GetFlags().Set(eLaunchFlagLaunchInTTY);
477 execution_context ? execution_context->GetTargetSP() : TargetSP();
478 PlatformSP platform_sp =
479 target_sp ? target_sp->GetPlatform() : PlatformSP();
480 launch_info.GetArchitecture() =
481 Platform::GetAugmentedArchSpec(platform_sp.get(), option_arg);
484 case 'A': // Disable ASLR.
487 const bool disable_aslr_arg =
488 OptionArgParser::ToBoolean(option_arg, true, &success);
490 disable_aslr = disable_aslr_arg ? eLazyBoolYes : eLazyBoolNo;
492 error.SetErrorStringWithFormat(
493 "Invalid boolean value for disable-aslr option: '%s'",
494 option_arg.empty() ? "<null>" : option_arg.str().c_str());
498 case 'X': // shell expand args.
501 const bool expand_args =
502 OptionArgParser::ToBoolean(option_arg, true, &success);
504 launch_info.SetShellExpandArguments(expand_args);
506 error.SetErrorStringWithFormat(
507 "Invalid boolean value for shell-expand-args option: '%s'",
508 option_arg.empty() ? "<null>" : option_arg.str().c_str());
513 if (!option_arg.empty())
514 launch_info.SetShell(FileSpec(option_arg));
516 launch_info.SetShell(HostInfo::GetDefaultShell());
520 launch_info.GetEnvironment().insert(option_arg);
524 error.SetErrorStringWithFormat("unrecognized short option character '%c'",
531 static constexpr OptionDefinition g_process_launch_options[] = {
532 {LLDB_OPT_SET_ALL, false, "stop-at-entry", 's', OptionParser::eNoArgument,
533 nullptr, {}, 0, eArgTypeNone,
534 "Stop at the entry point of the program when launching a process."},
535 {LLDB_OPT_SET_ALL, false, "disable-aslr", 'A',
536 OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeBoolean,
537 "Set whether to disable address space layout randomization when launching "
539 {LLDB_OPT_SET_ALL, false, "plugin", 'p', OptionParser::eRequiredArgument,
540 nullptr, {}, 0, eArgTypePlugin,
541 "Name of the process plugin you want to use."},
542 {LLDB_OPT_SET_ALL, false, "working-dir", 'w',
543 OptionParser::eRequiredArgument, nullptr, {}, 0,
544 eArgTypeDirectoryName,
545 "Set the current working directory to <path> when running the inferior."},
546 {LLDB_OPT_SET_ALL, false, "arch", 'a', OptionParser::eRequiredArgument,
547 nullptr, {}, 0, eArgTypeArchitecture,
548 "Set the architecture for the process to launch when ambiguous."},
549 {LLDB_OPT_SET_ALL, false, "environment", 'v',
550 OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeNone,
551 "Specify an environment variable name/value string (--environment "
552 "NAME=VALUE). Can be specified multiple times for subsequent environment "
554 {LLDB_OPT_SET_1 | LLDB_OPT_SET_2 | LLDB_OPT_SET_3, false, "shell", 'c',
555 OptionParser::eOptionalArgument, nullptr, {}, 0, eArgTypeFilename,
556 "Run the process in a shell (not supported on all platforms)."},
558 {LLDB_OPT_SET_1, false, "stdin", 'i', OptionParser::eRequiredArgument,
559 nullptr, {}, 0, eArgTypeFilename,
560 "Redirect stdin for the process to <filename>."},
561 {LLDB_OPT_SET_1, false, "stdout", 'o', OptionParser::eRequiredArgument,
562 nullptr, {}, 0, eArgTypeFilename,
563 "Redirect stdout for the process to <filename>."},
564 {LLDB_OPT_SET_1, false, "stderr", 'e', OptionParser::eRequiredArgument,
565 nullptr, {}, 0, eArgTypeFilename,
566 "Redirect stderr for the process to <filename>."},
568 {LLDB_OPT_SET_2, false, "tty", 't', OptionParser::eNoArgument, nullptr,
570 "Start the process in a terminal (not supported on all platforms)."},
572 {LLDB_OPT_SET_3, false, "no-stdio", 'n', OptionParser::eNoArgument, nullptr,
574 "Do not set up for terminal I/O to go to running process."},
575 {LLDB_OPT_SET_4, false, "shell-expand-args", 'X',
576 OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeBoolean,
577 "Set whether to shell expand arguments to the process when launching."},
580 llvm::ArrayRef<OptionDefinition> ProcessLaunchCommandOptions::GetDefinitions() {
581 return llvm::makeArrayRef(g_process_launch_options);
584 bool ProcessInstanceInfoMatch::NameMatches(const char *process_name) const {
585 if (m_name_match_type == NameMatch::Ignore || process_name == nullptr)
587 const char *match_name = m_match_info.GetName();
591 return lldb_private::NameMatches(process_name, m_name_match_type, match_name);
594 bool ProcessInstanceInfoMatch::Matches(
595 const ProcessInstanceInfo &proc_info) const {
596 if (!NameMatches(proc_info.GetName()))
599 if (m_match_info.ProcessIDIsValid() &&
600 m_match_info.GetProcessID() != proc_info.GetProcessID())
603 if (m_match_info.ParentProcessIDIsValid() &&
604 m_match_info.GetParentProcessID() != proc_info.GetParentProcessID())
607 if (m_match_info.UserIDIsValid() &&
608 m_match_info.GetUserID() != proc_info.GetUserID())
611 if (m_match_info.GroupIDIsValid() &&
612 m_match_info.GetGroupID() != proc_info.GetGroupID())
615 if (m_match_info.EffectiveUserIDIsValid() &&
616 m_match_info.GetEffectiveUserID() != proc_info.GetEffectiveUserID())
619 if (m_match_info.EffectiveGroupIDIsValid() &&
620 m_match_info.GetEffectiveGroupID() != proc_info.GetEffectiveGroupID())
623 if (m_match_info.GetArchitecture().IsValid() &&
624 !m_match_info.GetArchitecture().IsCompatibleMatch(
625 proc_info.GetArchitecture()))
630 bool ProcessInstanceInfoMatch::MatchAllProcesses() const {
631 if (m_name_match_type != NameMatch::Ignore)
634 if (m_match_info.ProcessIDIsValid())
637 if (m_match_info.ParentProcessIDIsValid())
640 if (m_match_info.UserIDIsValid())
643 if (m_match_info.GroupIDIsValid())
646 if (m_match_info.EffectiveUserIDIsValid())
649 if (m_match_info.EffectiveGroupIDIsValid())
652 if (m_match_info.GetArchitecture().IsValid())
655 if (m_match_all_users)
661 void ProcessInstanceInfoMatch::Clear() {
662 m_match_info.Clear();
663 m_name_match_type = NameMatch::Ignore;
664 m_match_all_users = false;
667 ProcessSP Process::FindPlugin(lldb::TargetSP target_sp,
668 llvm::StringRef plugin_name,
669 ListenerSP listener_sp,
670 const FileSpec *crash_file_path) {
671 static uint32_t g_process_unique_id = 0;
673 ProcessSP process_sp;
674 ProcessCreateInstance create_callback = nullptr;
675 if (!plugin_name.empty()) {
676 ConstString const_plugin_name(plugin_name);
678 PluginManager::GetProcessCreateCallbackForPluginName(const_plugin_name);
679 if (create_callback) {
680 process_sp = create_callback(target_sp, listener_sp, crash_file_path);
682 if (process_sp->CanDebug(target_sp, true)) {
683 process_sp->m_process_unique_id = ++g_process_unique_id;
689 for (uint32_t idx = 0;
691 PluginManager::GetProcessCreateCallbackAtIndex(idx)) != nullptr;
693 process_sp = create_callback(target_sp, listener_sp, crash_file_path);
695 if (process_sp->CanDebug(target_sp, false)) {
696 process_sp->m_process_unique_id = ++g_process_unique_id;
706 ConstString &Process::GetStaticBroadcasterClass() {
707 static ConstString class_name("lldb.process");
711 Process::Process(lldb::TargetSP target_sp, ListenerSP listener_sp)
712 : Process(target_sp, listener_sp,
713 UnixSignals::Create(HostInfo::GetArchitecture())) {
714 // This constructor just delegates to the full Process constructor,
715 // defaulting to using the Host's UnixSignals.
718 Process::Process(lldb::TargetSP target_sp, ListenerSP listener_sp,
719 const UnixSignalsSP &unix_signals_sp)
720 : ProcessProperties(this), UserID(LLDB_INVALID_PROCESS_ID),
721 Broadcaster((target_sp->GetDebugger().GetBroadcasterManager()),
722 Process::GetStaticBroadcasterClass().AsCString()),
723 m_target_wp(target_sp), m_public_state(eStateUnloaded),
724 m_private_state(eStateUnloaded),
725 m_private_state_broadcaster(nullptr,
726 "lldb.process.internal_state_broadcaster"),
727 m_private_state_control_broadcaster(
728 nullptr, "lldb.process.internal_state_control_broadcaster"),
729 m_private_state_listener_sp(
730 Listener::MakeListener("lldb.process.internal_state_listener")),
731 m_mod_id(), m_process_unique_id(0), m_thread_index_id(0),
732 m_thread_id_to_index_id_map(), m_exit_status(-1), m_exit_string(),
733 m_exit_status_mutex(), m_thread_mutex(), m_thread_list_real(this),
734 m_thread_list(this), m_extended_thread_list(this),
735 m_extended_thread_stop_id(0), m_queue_list(this), m_queue_list_stop_id(0),
736 m_notifications(), m_image_tokens(), m_listener_sp(listener_sp),
737 m_breakpoint_site_list(), m_dynamic_checkers_ap(),
738 m_unix_signals_sp(unix_signals_sp), m_abi_sp(), m_process_input_reader(),
739 m_stdio_communication("process.stdio"), m_stdio_communication_mutex(),
740 m_stdin_forward(false), m_stdout_data(), m_stderr_data(),
741 m_profile_data_comm_mutex(), m_profile_data(), m_iohandler_sync(0),
742 m_memory_cache(*this), m_allocated_memory_cache(*this),
743 m_should_detach(false), m_next_event_action_ap(), m_public_run_lock(),
744 m_private_run_lock(), m_finalizing(false), m_finalize_called(false),
745 m_clear_thread_plans_on_stop(false), m_force_next_event_delivery(false),
746 m_last_broadcast_state(eStateInvalid), m_destroy_in_process(false),
747 m_can_interpret_function_calls(false), m_warnings_issued(),
748 m_run_thread_plan_lock(), m_can_jit(eCanJITDontKnow) {
749 CheckInWithManager();
751 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT));
753 log->Printf("%p Process::Process()", static_cast<void *>(this));
755 if (!m_unix_signals_sp)
756 m_unix_signals_sp = std::make_shared<UnixSignals>();
758 SetEventName(eBroadcastBitStateChanged, "state-changed");
759 SetEventName(eBroadcastBitInterrupt, "interrupt");
760 SetEventName(eBroadcastBitSTDOUT, "stdout-available");
761 SetEventName(eBroadcastBitSTDERR, "stderr-available");
762 SetEventName(eBroadcastBitProfileData, "profile-data-available");
763 SetEventName(eBroadcastBitStructuredData, "structured-data-available");
765 m_private_state_control_broadcaster.SetEventName(
766 eBroadcastInternalStateControlStop, "control-stop");
767 m_private_state_control_broadcaster.SetEventName(
768 eBroadcastInternalStateControlPause, "control-pause");
769 m_private_state_control_broadcaster.SetEventName(
770 eBroadcastInternalStateControlResume, "control-resume");
772 m_listener_sp->StartListeningForEvents(
773 this, eBroadcastBitStateChanged | eBroadcastBitInterrupt |
774 eBroadcastBitSTDOUT | eBroadcastBitSTDERR |
775 eBroadcastBitProfileData | eBroadcastBitStructuredData);
777 m_private_state_listener_sp->StartListeningForEvents(
778 &m_private_state_broadcaster,
779 eBroadcastBitStateChanged | eBroadcastBitInterrupt);
781 m_private_state_listener_sp->StartListeningForEvents(
782 &m_private_state_control_broadcaster,
783 eBroadcastInternalStateControlStop | eBroadcastInternalStateControlPause |
784 eBroadcastInternalStateControlResume);
785 // We need something valid here, even if just the default UnixSignalsSP.
786 assert(m_unix_signals_sp && "null m_unix_signals_sp after initialization");
788 // Allow the platform to override the default cache line size
789 OptionValueSP value_sp =
791 ->GetPropertyAtIndex(nullptr, true, ePropertyMemCacheLineSize)
793 uint32_t platform_cache_line_size =
794 target_sp->GetPlatform()->GetDefaultMemoryCacheLineSize();
795 if (!value_sp->OptionWasSet() && platform_cache_line_size != 0)
796 value_sp->SetUInt64Value(platform_cache_line_size);
799 Process::~Process() {
800 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT));
802 log->Printf("%p Process::~Process()", static_cast<void *>(this));
803 StopPrivateStateThread();
805 // ThreadList::Clear() will try to acquire this process's mutex, so
806 // explicitly clear the thread list here to ensure that the mutex is not
807 // destroyed before the thread list.
808 m_thread_list.Clear();
811 const ProcessPropertiesSP &Process::GetGlobalProperties() {
812 // NOTE: intentional leak so we don't crash if global destructor chain gets
813 // called as other threads still use the result of this function
814 static ProcessPropertiesSP *g_settings_sp_ptr =
815 new ProcessPropertiesSP(new ProcessProperties(nullptr));
816 return *g_settings_sp_ptr;
819 void Process::Finalize() {
822 // Destroy this process if needed
823 switch (GetPrivateState()) {
824 case eStateConnected:
825 case eStateAttaching:
826 case eStateLaunching:
831 case eStateSuspended:
842 // Clear our broadcaster before we proceed with destroying
843 Broadcaster::Clear();
845 // Do any cleanup needed prior to being destructed... Subclasses that
846 // override this method should call this superclass method as well.
848 // We need to destroy the loader before the derived Process class gets
849 // destroyed since it is very likely that undoing the loader will require
850 // access to the real process.
851 m_dynamic_checkers_ap.reset();
854 m_system_runtime_ap.reset();
856 m_jit_loaders_ap.reset();
857 m_thread_list_real.Destroy();
858 m_thread_list.Destroy();
859 m_extended_thread_list.Destroy();
860 m_queue_list.Clear();
861 m_queue_list_stop_id = 0;
862 std::vector<Notifications> empty_notifications;
863 m_notifications.swap(empty_notifications);
864 m_image_tokens.clear();
865 m_memory_cache.Clear();
866 m_allocated_memory_cache.Clear();
867 m_language_runtimes.clear();
868 m_instrumentation_runtimes.clear();
869 m_next_event_action_ap.reset();
870 // Clear the last natural stop ID since it has a strong reference to this
872 m_mod_id.SetStopEventForLastNaturalStopID(EventSP());
873 //#ifdef LLDB_CONFIGURATION_DEBUG
874 // StreamFile s(stdout, false);
876 // while (m_private_state_listener_sp->GetNextEvent(event_sp))
878 // event_sp->Dump (&s);
882 // We have to be very careful here as the m_private_state_listener might
883 // contain events that have ProcessSP values in them which can keep this
884 // process around forever. These events need to be cleared out.
885 m_private_state_listener_sp->Clear();
886 m_public_run_lock.TrySetRunning(); // This will do nothing if already locked
887 m_public_run_lock.SetStopped();
888 m_private_run_lock.TrySetRunning(); // This will do nothing if already locked
889 m_private_run_lock.SetStopped();
890 m_structured_data_plugin_map.clear();
891 m_finalize_called = true;
894 void Process::RegisterNotificationCallbacks(const Notifications &callbacks) {
895 m_notifications.push_back(callbacks);
896 if (callbacks.initialize != nullptr)
897 callbacks.initialize(callbacks.baton, this);
900 bool Process::UnregisterNotificationCallbacks(const Notifications &callbacks) {
901 std::vector<Notifications>::iterator pos, end = m_notifications.end();
902 for (pos = m_notifications.begin(); pos != end; ++pos) {
903 if (pos->baton == callbacks.baton &&
904 pos->initialize == callbacks.initialize &&
905 pos->process_state_changed == callbacks.process_state_changed) {
906 m_notifications.erase(pos);
913 void Process::SynchronouslyNotifyStateChanged(StateType state) {
914 std::vector<Notifications>::iterator notification_pos,
915 notification_end = m_notifications.end();
916 for (notification_pos = m_notifications.begin();
917 notification_pos != notification_end; ++notification_pos) {
918 if (notification_pos->process_state_changed)
919 notification_pos->process_state_changed(notification_pos->baton, this,
924 // FIXME: We need to do some work on events before the general Listener sees
926 // For instance if we are continuing from a breakpoint, we need to ensure that
927 // we do the little "insert real insn, step & stop" trick. But we can't do
928 // that when the event is delivered by the broadcaster - since that is done on
929 // the thread that is waiting for new events, so if we needed more than one
930 // event for our handling, we would stall. So instead we do it when we fetch
931 // the event off of the queue.
934 StateType Process::GetNextEvent(EventSP &event_sp) {
935 StateType state = eStateInvalid;
937 if (m_listener_sp->GetEventForBroadcaster(this, event_sp,
938 std::chrono::seconds(0)) &&
940 state = Process::ProcessEventData::GetStateFromEvent(event_sp.get());
945 void Process::SyncIOHandler(uint32_t iohandler_id,
946 const Timeout<std::micro> &timeout) {
947 // don't sync (potentially context switch) in case where there is no process
949 if (!m_process_input_reader)
952 auto Result = m_iohandler_sync.WaitForValueNotEqualTo(iohandler_id, timeout);
954 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
958 "waited from m_iohandler_sync to change from {0}. New value is {1}.",
959 iohandler_id, *Result);
961 LLDB_LOG(log, "timed out waiting for m_iohandler_sync to change from {0}.",
966 StateType Process::WaitForProcessToStop(const Timeout<std::micro> &timeout,
967 EventSP *event_sp_ptr, bool wait_always,
968 ListenerSP hijack_listener_sp,
969 Stream *stream, bool use_run_lock) {
970 // We can't just wait for a "stopped" event, because the stopped event may
971 // have restarted the target. We have to actually check each event, and in
972 // the case of a stopped event check the restarted flag on the event.
974 event_sp_ptr->reset();
975 StateType state = GetState();
976 // If we are exited or detached, we won't ever get back to any other valid
978 if (state == eStateDetached || state == eStateExited)
981 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
982 LLDB_LOG(log, "timeout = {0}", timeout);
984 if (!wait_always && StateIsStoppedState(state, true) &&
985 StateIsStoppedState(GetPrivateState(), true)) {
987 log->Printf("Process::%s returning without waiting for events; process "
988 "private and public states are already 'stopped'.",
990 // We need to toggle the run lock as this won't get done in
991 // SetPublicState() if the process is hijacked.
992 if (hijack_listener_sp && use_run_lock)
993 m_public_run_lock.SetStopped();
997 while (state != eStateInvalid) {
999 state = GetStateChangedEvents(event_sp, timeout, hijack_listener_sp);
1000 if (event_sp_ptr && event_sp)
1001 *event_sp_ptr = event_sp;
1003 bool pop_process_io_handler = (hijack_listener_sp.get() != nullptr);
1004 Process::HandleProcessStateChangedEvent(event_sp, stream,
1005 pop_process_io_handler);
1009 case eStateDetached:
1011 case eStateUnloaded:
1012 // We need to toggle the run lock as this won't get done in
1013 // SetPublicState() if the process is hijacked.
1014 if (hijack_listener_sp && use_run_lock)
1015 m_public_run_lock.SetStopped();
1018 if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get()))
1021 // We need to toggle the run lock as this won't get done in
1022 // SetPublicState() if the process is hijacked.
1023 if (hijack_listener_sp && use_run_lock)
1024 m_public_run_lock.SetStopped();
1034 bool Process::HandleProcessStateChangedEvent(const EventSP &event_sp,
1036 bool &pop_process_io_handler) {
1037 const bool handle_pop = pop_process_io_handler;
1039 pop_process_io_handler = false;
1040 ProcessSP process_sp =
1041 Process::ProcessEventData::GetProcessFromEvent(event_sp.get());
1046 StateType event_state =
1047 Process::ProcessEventData::GetStateFromEvent(event_sp.get());
1048 if (event_state == eStateInvalid)
1051 switch (event_state) {
1053 case eStateUnloaded:
1054 case eStateAttaching:
1055 case eStateLaunching:
1056 case eStateStepping:
1057 case eStateDetached:
1059 stream->Printf("Process %" PRIu64 " %s\n", process_sp->GetID(),
1060 StateAsCString(event_state));
1061 if (event_state == eStateDetached)
1062 pop_process_io_handler = true;
1065 case eStateConnected:
1067 // Don't be chatty when we run...
1072 process_sp->GetStatus(*stream);
1073 pop_process_io_handler = true;
1078 case eStateSuspended:
1079 // Make sure the program hasn't been auto-restarted:
1080 if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) {
1082 size_t num_reasons =
1083 Process::ProcessEventData::GetNumRestartedReasons(event_sp.get());
1084 if (num_reasons > 0) {
1085 // FIXME: Do we want to report this, or would that just be annoyingly
1087 if (num_reasons == 1) {
1088 const char *reason =
1089 Process::ProcessEventData::GetRestartedReasonAtIndex(
1091 stream->Printf("Process %" PRIu64 " stopped and restarted: %s\n",
1092 process_sp->GetID(),
1093 reason ? reason : "<UNKNOWN REASON>");
1095 stream->Printf("Process %" PRIu64
1096 " stopped and restarted, reasons:\n",
1097 process_sp->GetID());
1099 for (size_t i = 0; i < num_reasons; i++) {
1100 const char *reason =
1101 Process::ProcessEventData::GetRestartedReasonAtIndex(
1103 stream->Printf("\t%s\n", reason ? reason : "<UNKNOWN REASON>");
1109 StopInfoSP curr_thread_stop_info_sp;
1110 // Lock the thread list so it doesn't change on us, this is the scope for
1113 ThreadList &thread_list = process_sp->GetThreadList();
1114 std::lock_guard<std::recursive_mutex> guard(thread_list.GetMutex());
1116 ThreadSP curr_thread(thread_list.GetSelectedThread());
1118 StopReason curr_thread_stop_reason = eStopReasonInvalid;
1120 curr_thread_stop_reason = curr_thread->GetStopReason();
1121 curr_thread_stop_info_sp = curr_thread->GetStopInfo();
1123 if (!curr_thread || !curr_thread->IsValid() ||
1124 curr_thread_stop_reason == eStopReasonInvalid ||
1125 curr_thread_stop_reason == eStopReasonNone) {
1126 // Prefer a thread that has just completed its plan over another
1127 // thread as current thread.
1128 ThreadSP plan_thread;
1129 ThreadSP other_thread;
1131 const size_t num_threads = thread_list.GetSize();
1133 for (i = 0; i < num_threads; ++i) {
1134 thread = thread_list.GetThreadAtIndex(i);
1135 StopReason thread_stop_reason = thread->GetStopReason();
1136 switch (thread_stop_reason) {
1137 case eStopReasonInvalid:
1138 case eStopReasonNone:
1141 case eStopReasonSignal: {
1142 // Don't select a signal thread if we weren't going to stop at
1143 // that signal. We have to have had another reason for stopping
1144 // here, and the user doesn't want to see this thread.
1145 uint64_t signo = thread->GetStopInfo()->GetValue();
1146 if (process_sp->GetUnixSignals()->GetShouldStop(signo)) {
1148 other_thread = thread;
1152 case eStopReasonTrace:
1153 case eStopReasonBreakpoint:
1154 case eStopReasonWatchpoint:
1155 case eStopReasonException:
1156 case eStopReasonExec:
1157 case eStopReasonThreadExiting:
1158 case eStopReasonInstrumentation:
1160 other_thread = thread;
1162 case eStopReasonPlanComplete:
1164 plan_thread = thread;
1169 thread_list.SetSelectedThreadByID(plan_thread->GetID());
1170 else if (other_thread)
1171 thread_list.SetSelectedThreadByID(other_thread->GetID());
1173 if (curr_thread && curr_thread->IsValid())
1174 thread = curr_thread;
1176 thread = thread_list.GetThreadAtIndex(0);
1179 thread_list.SetSelectedThreadByID(thread->GetID());
1183 // Drop the ThreadList mutex by here, since GetThreadStatus below might
1184 // have to run code, e.g. for Data formatters, and if we hold the
1185 // ThreadList mutex, then the process is going to have a hard time
1186 // restarting the process.
1188 Debugger &debugger = process_sp->GetTarget().GetDebugger();
1189 if (debugger.GetTargetList().GetSelectedTarget().get() ==
1190 &process_sp->GetTarget()) {
1191 const bool only_threads_with_stop_reason = true;
1192 const uint32_t start_frame = 0;
1193 const uint32_t num_frames = 1;
1194 const uint32_t num_frames_with_source = 1;
1195 const bool stop_format = true;
1196 process_sp->GetStatus(*stream);
1197 process_sp->GetThreadStatus(*stream, only_threads_with_stop_reason,
1198 start_frame, num_frames,
1199 num_frames_with_source,
1201 if (curr_thread_stop_info_sp) {
1202 lldb::addr_t crashing_address;
1203 ValueObjectSP valobj_sp = StopInfo::GetCrashingDereference(
1204 curr_thread_stop_info_sp, &crashing_address);
1206 const bool qualify_cxx_base_classes = false;
1208 const ValueObject::GetExpressionPathFormat format =
1209 ValueObject::GetExpressionPathFormat::
1210 eGetExpressionPathFormatHonorPointers;
1211 stream->PutCString("Likely cause: ");
1212 valobj_sp->GetExpressionPath(*stream, qualify_cxx_base_classes,
1214 stream->Printf(" accessed 0x%" PRIx64 "\n", crashing_address);
1218 uint32_t target_idx = debugger.GetTargetList().GetIndexOfTarget(
1219 process_sp->GetTarget().shared_from_this());
1220 if (target_idx != UINT32_MAX)
1221 stream->Printf("Target %d: (", target_idx);
1223 stream->Printf("Target <unknown index>: (");
1224 process_sp->GetTarget().Dump(stream, eDescriptionLevelBrief);
1225 stream->Printf(") stopped.\n");
1229 // Pop the process IO handler
1230 pop_process_io_handler = true;
1235 if (handle_pop && pop_process_io_handler)
1236 process_sp->PopProcessIOHandler();
1241 bool Process::HijackProcessEvents(ListenerSP listener_sp) {
1243 return HijackBroadcaster(listener_sp, eBroadcastBitStateChanged |
1244 eBroadcastBitInterrupt);
1249 void Process::RestoreProcessEvents() { RestoreBroadcaster(); }
1251 StateType Process::GetStateChangedEvents(EventSP &event_sp,
1252 const Timeout<std::micro> &timeout,
1253 ListenerSP hijack_listener_sp) {
1254 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
1255 LLDB_LOG(log, "timeout = {0}, event_sp)...", timeout);
1257 ListenerSP listener_sp = hijack_listener_sp;
1259 listener_sp = m_listener_sp;
1261 StateType state = eStateInvalid;
1262 if (listener_sp->GetEventForBroadcasterWithType(
1263 this, eBroadcastBitStateChanged | eBroadcastBitInterrupt, event_sp,
1265 if (event_sp && event_sp->GetType() == eBroadcastBitStateChanged)
1266 state = Process::ProcessEventData::GetStateFromEvent(event_sp.get());
1268 LLDB_LOG(log, "got no event or was interrupted.");
1271 LLDB_LOG(log, "timeout = {0}, event_sp) => {1}", timeout, state);
1275 Event *Process::PeekAtStateChangedEvents() {
1276 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
1279 log->Printf("Process::%s...", __FUNCTION__);
1282 event_ptr = m_listener_sp->PeekAtNextEventForBroadcasterWithType(
1283 this, eBroadcastBitStateChanged);
1287 "Process::%s (event_ptr) => %s", __FUNCTION__,
1288 StateAsCString(ProcessEventData::GetStateFromEvent(event_ptr)));
1290 log->Printf("Process::%s no events found", __FUNCTION__);
1297 Process::GetStateChangedEventsPrivate(EventSP &event_sp,
1298 const Timeout<std::micro> &timeout) {
1299 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
1300 LLDB_LOG(log, "timeout = {0}, event_sp)...", timeout);
1302 StateType state = eStateInvalid;
1303 if (m_private_state_listener_sp->GetEventForBroadcasterWithType(
1304 &m_private_state_broadcaster,
1305 eBroadcastBitStateChanged | eBroadcastBitInterrupt, event_sp,
1307 if (event_sp && event_sp->GetType() == eBroadcastBitStateChanged)
1308 state = Process::ProcessEventData::GetStateFromEvent(event_sp.get());
1310 LLDB_LOG(log, "timeout = {0}, event_sp) => {1}", timeout,
1311 state == eStateInvalid ? "TIMEOUT" : StateAsCString(state));
1315 bool Process::GetEventsPrivate(EventSP &event_sp,
1316 const Timeout<std::micro> &timeout,
1317 bool control_only) {
1318 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
1319 LLDB_LOG(log, "timeout = {0}, event_sp)...", timeout);
1322 return m_private_state_listener_sp->GetEventForBroadcaster(
1323 &m_private_state_control_broadcaster, event_sp, timeout);
1325 return m_private_state_listener_sp->GetEvent(event_sp, timeout);
1328 bool Process::IsRunning() const {
1329 return StateIsRunningState(m_public_state.GetValue());
1332 int Process::GetExitStatus() {
1333 std::lock_guard<std::mutex> guard(m_exit_status_mutex);
1335 if (m_public_state.GetValue() == eStateExited)
1336 return m_exit_status;
1340 const char *Process::GetExitDescription() {
1341 std::lock_guard<std::mutex> guard(m_exit_status_mutex);
1343 if (m_public_state.GetValue() == eStateExited && !m_exit_string.empty())
1344 return m_exit_string.c_str();
1348 bool Process::SetExitStatus(int status, const char *cstr) {
1349 // Use a mutex to protect setting the exit status.
1350 std::lock_guard<std::mutex> guard(m_exit_status_mutex);
1352 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE |
1353 LIBLLDB_LOG_PROCESS));
1356 "Process::SetExitStatus (status=%i (0x%8.8x), description=%s%s%s)",
1357 status, status, cstr ? "\"" : "", cstr ? cstr : "NULL",
1360 // We were already in the exited state
1361 if (m_private_state.GetValue() == eStateExited) {
1363 log->Printf("Process::SetExitStatus () ignoring exit status because "
1364 "state was already set to eStateExited");
1368 m_exit_status = status;
1370 m_exit_string = cstr;
1372 m_exit_string.clear();
1374 // Clear the last natural stop ID since it has a strong reference to this
1376 m_mod_id.SetStopEventForLastNaturalStopID(EventSP());
1378 SetPrivateState(eStateExited);
1380 // Allow subclasses to do some cleanup
1386 bool Process::IsAlive() {
1387 switch (m_private_state.GetValue()) {
1388 case eStateConnected:
1389 case eStateAttaching:
1390 case eStateLaunching:
1393 case eStateStepping:
1395 case eStateSuspended:
1402 // This static callback can be used to watch for local child processes on the
1403 // current host. The child process exits, the process will be found in the
1404 // global target list (we want to be completely sure that the
1405 // lldb_private::Process doesn't go away before we can deliver the signal.
1406 bool Process::SetProcessExitStatus(
1407 lldb::pid_t pid, bool exited,
1408 int signo, // Zero for no signal
1409 int exit_status // Exit value of process if signal is zero
1411 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
1413 log->Printf("Process::SetProcessExitStatus (pid=%" PRIu64
1414 ", exited=%i, signal=%i, exit_status=%i)\n",
1415 pid, exited, signo, exit_status);
1418 TargetSP target_sp(Debugger::FindTargetWithProcessID(pid));
1420 ProcessSP process_sp(target_sp->GetProcessSP());
1422 const char *signal_cstr = nullptr;
1424 signal_cstr = process_sp->GetUnixSignals()->GetSignalAsCString(signo);
1426 process_sp->SetExitStatus(exit_status, signal_cstr);
1434 void Process::UpdateThreadListIfNeeded() {
1435 const uint32_t stop_id = GetStopID();
1436 if (m_thread_list.GetSize(false) == 0 ||
1437 stop_id != m_thread_list.GetStopID()) {
1438 const StateType state = GetPrivateState();
1439 if (StateIsStoppedState(state, true)) {
1440 std::lock_guard<std::recursive_mutex> guard(m_thread_list.GetMutex());
1441 // m_thread_list does have its own mutex, but we need to hold onto the
1442 // mutex between the call to UpdateThreadList(...) and the
1443 // os->UpdateThreadList(...) so it doesn't change on us
1444 ThreadList &old_thread_list = m_thread_list;
1445 ThreadList real_thread_list(this);
1446 ThreadList new_thread_list(this);
1447 // Always update the thread list with the protocol specific thread list,
1448 // but only update if "true" is returned
1449 if (UpdateThreadList(m_thread_list_real, real_thread_list)) {
1450 // Don't call into the OperatingSystem to update the thread list if we
1451 // are shutting down, since that may call back into the SBAPI's,
1452 // requiring the API lock which is already held by whoever is shutting
1453 // us down, causing a deadlock.
1454 OperatingSystem *os = GetOperatingSystem();
1455 if (os && !m_destroy_in_process) {
1456 // Clear any old backing threads where memory threads might have been
1457 // backed by actual threads from the lldb_private::Process subclass
1458 size_t num_old_threads = old_thread_list.GetSize(false);
1459 for (size_t i = 0; i < num_old_threads; ++i)
1460 old_thread_list.GetThreadAtIndex(i, false)->ClearBackingThread();
1462 // Turn off dynamic types to ensure we don't run any expressions.
1463 // Objective-C can run an expression to determine if a SBValue is a
1464 // dynamic type or not and we need to avoid this. OperatingSystem
1465 // plug-ins can't run expressions that require running code...
1467 Target &target = GetTarget();
1468 const lldb::DynamicValueType saved_prefer_dynamic =
1469 target.GetPreferDynamicValue();
1470 if (saved_prefer_dynamic != lldb::eNoDynamicValues)
1471 target.SetPreferDynamicValue(lldb::eNoDynamicValues);
1473 // Now let the OperatingSystem plug-in update the thread list
1475 os->UpdateThreadList(
1476 old_thread_list, // Old list full of threads created by OS plug-in
1477 real_thread_list, // The actual thread list full of threads
1478 // created by each lldb_private::Process
1480 new_thread_list); // The new thread list that we will show to the
1481 // user that gets filled in
1483 if (saved_prefer_dynamic != lldb::eNoDynamicValues)
1484 target.SetPreferDynamicValue(saved_prefer_dynamic);
1486 // No OS plug-in, the new thread list is the same as the real thread
1488 new_thread_list = real_thread_list;
1491 m_thread_list_real.Update(real_thread_list);
1492 m_thread_list.Update(new_thread_list);
1493 m_thread_list.SetStopID(stop_id);
1495 if (GetLastNaturalStopID() != m_extended_thread_stop_id) {
1496 // Clear any extended threads that we may have accumulated previously
1497 m_extended_thread_list.Clear();
1498 m_extended_thread_stop_id = GetLastNaturalStopID();
1500 m_queue_list.Clear();
1501 m_queue_list_stop_id = GetLastNaturalStopID();
1508 void Process::UpdateQueueListIfNeeded() {
1509 if (m_system_runtime_ap) {
1510 if (m_queue_list.GetSize() == 0 ||
1511 m_queue_list_stop_id != GetLastNaturalStopID()) {
1512 const StateType state = GetPrivateState();
1513 if (StateIsStoppedState(state, true)) {
1514 m_system_runtime_ap->PopulateQueueList(m_queue_list);
1515 m_queue_list_stop_id = GetLastNaturalStopID();
1521 ThreadSP Process::CreateOSPluginThread(lldb::tid_t tid, lldb::addr_t context) {
1522 OperatingSystem *os = GetOperatingSystem();
1524 return os->CreateThread(tid, context);
1528 uint32_t Process::GetNextThreadIndexID(uint64_t thread_id) {
1529 return AssignIndexIDToThread(thread_id);
1532 bool Process::HasAssignedIndexIDToThread(uint64_t thread_id) {
1533 return (m_thread_id_to_index_id_map.find(thread_id) !=
1534 m_thread_id_to_index_id_map.end());
1537 uint32_t Process::AssignIndexIDToThread(uint64_t thread_id) {
1538 uint32_t result = 0;
1539 std::map<uint64_t, uint32_t>::iterator iterator =
1540 m_thread_id_to_index_id_map.find(thread_id);
1541 if (iterator == m_thread_id_to_index_id_map.end()) {
1542 result = ++m_thread_index_id;
1543 m_thread_id_to_index_id_map[thread_id] = result;
1545 result = iterator->second;
1551 StateType Process::GetState() {
1552 return m_public_state.GetValue();
1555 bool Process::StateChangedIsExternallyHijacked() {
1556 if (IsHijackedForEvent(eBroadcastBitStateChanged)) {
1557 const char *hijacking_name = GetHijackingListenerName();
1558 if (hijacking_name &&
1559 strcmp(hijacking_name, "lldb.Process.ResumeSynchronous.hijack"))
1565 void Process::SetPublicState(StateType new_state, bool restarted) {
1566 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE |
1567 LIBLLDB_LOG_PROCESS));
1569 log->Printf("Process::SetPublicState (state = %s, restarted = %i)",
1570 StateAsCString(new_state), restarted);
1571 const StateType old_state = m_public_state.GetValue();
1572 m_public_state.SetValue(new_state);
1574 // On the transition from Run to Stopped, we unlock the writer end of the run
1575 // lock. The lock gets locked in Resume, which is the public API to tell the
1577 if (!StateChangedIsExternallyHijacked()) {
1578 if (new_state == eStateDetached) {
1581 "Process::SetPublicState (%s) -- unlocking run lock for detach",
1582 StateAsCString(new_state));
1583 m_public_run_lock.SetStopped();
1585 const bool old_state_is_stopped = StateIsStoppedState(old_state, false);
1586 const bool new_state_is_stopped = StateIsStoppedState(new_state, false);
1587 if ((old_state_is_stopped != new_state_is_stopped)) {
1588 if (new_state_is_stopped && !restarted) {
1590 log->Printf("Process::SetPublicState (%s) -- unlocking run lock",
1591 StateAsCString(new_state));
1592 m_public_run_lock.SetStopped();
1599 Status Process::Resume() {
1600 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE |
1601 LIBLLDB_LOG_PROCESS));
1603 log->Printf("Process::Resume -- locking run lock");
1604 if (!m_public_run_lock.TrySetRunning()) {
1605 Status error("Resume request failed - process still running.");
1607 log->Printf("Process::Resume: -- TrySetRunning failed, not resuming.");
1610 Status error = PrivateResume();
1611 if (!error.Success()) {
1612 // Undo running state change
1613 m_public_run_lock.SetStopped();
1618 Status Process::ResumeSynchronous(Stream *stream) {
1619 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE |
1620 LIBLLDB_LOG_PROCESS));
1622 log->Printf("Process::ResumeSynchronous -- locking run lock");
1623 if (!m_public_run_lock.TrySetRunning()) {
1624 Status error("Resume request failed - process still running.");
1626 log->Printf("Process::Resume: -- TrySetRunning failed, not resuming.");
1630 ListenerSP listener_sp(
1631 Listener::MakeListener("lldb.Process.ResumeSynchronous.hijack"));
1632 HijackProcessEvents(listener_sp);
1634 Status error = PrivateResume();
1635 if (error.Success()) {
1637 WaitForProcessToStop(llvm::None, NULL, true, listener_sp, stream);
1638 const bool must_be_alive =
1639 false; // eStateExited is ok, so this must be false
1640 if (!StateIsStoppedState(state, must_be_alive))
1641 error.SetErrorStringWithFormat(
1642 "process not in stopped state after synchronous resume: %s",
1643 StateAsCString(state));
1645 // Undo running state change
1646 m_public_run_lock.SetStopped();
1649 // Undo the hijacking of process events...
1650 RestoreProcessEvents();
1655 StateType Process::GetPrivateState() { return m_private_state.GetValue(); }
1657 void Process::SetPrivateState(StateType new_state) {
1658 if (m_finalize_called)
1661 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE |
1662 LIBLLDB_LOG_PROCESS));
1663 bool state_changed = false;
1666 log->Printf("Process::SetPrivateState (%s)", StateAsCString(new_state));
1668 std::lock_guard<std::recursive_mutex> thread_guard(m_thread_list.GetMutex());
1669 std::lock_guard<std::recursive_mutex> guard(m_private_state.GetMutex());
1671 const StateType old_state = m_private_state.GetValueNoLock();
1672 state_changed = old_state != new_state;
1674 const bool old_state_is_stopped = StateIsStoppedState(old_state, false);
1675 const bool new_state_is_stopped = StateIsStoppedState(new_state, false);
1676 if (old_state_is_stopped != new_state_is_stopped) {
1677 if (new_state_is_stopped)
1678 m_private_run_lock.SetStopped();
1680 m_private_run_lock.SetRunning();
1683 if (state_changed) {
1684 m_private_state.SetValueNoLock(new_state);
1686 new Event(eBroadcastBitStateChanged,
1687 new ProcessEventData(shared_from_this(), new_state)));
1688 if (StateIsStoppedState(new_state, false)) {
1689 // Note, this currently assumes that all threads in the list stop when
1690 // the process stops. In the future we will want to support a debugging
1691 // model where some threads continue to run while others are stopped.
1692 // When that happens we will either need a way for the thread list to
1693 // identify which threads are stopping or create a special thread list
1694 // containing only threads which actually stopped.
1696 // The process plugin is responsible for managing the actual behavior of
1697 // the threads and should have stopped any threads that are going to stop
1698 // before we get here.
1699 m_thread_list.DidStop();
1701 m_mod_id.BumpStopID();
1702 if (!m_mod_id.IsLastResumeForUserExpression())
1703 m_mod_id.SetStopEventForLastNaturalStopID(event_sp);
1704 m_memory_cache.Clear();
1706 log->Printf("Process::SetPrivateState (%s) stop_id = %u",
1707 StateAsCString(new_state), m_mod_id.GetStopID());
1710 // Use our target to get a shared pointer to ourselves...
1711 if (m_finalize_called && !PrivateStateThreadIsValid())
1712 BroadcastEvent(event_sp);
1714 m_private_state_broadcaster.BroadcastEvent(event_sp);
1718 "Process::SetPrivateState (%s) state didn't change. Ignoring...",
1719 StateAsCString(new_state));
1723 void Process::SetRunningUserExpression(bool on) {
1724 m_mod_id.SetRunningUserExpression(on);
1727 void Process::SetRunningUtilityFunction(bool on) {
1728 m_mod_id.SetRunningUtilityFunction(on);
1731 addr_t Process::GetImageInfoAddress() { return LLDB_INVALID_ADDRESS; }
1733 const lldb::ABISP &Process::GetABI() {
1735 m_abi_sp = ABI::FindPlugin(shared_from_this(), GetTarget().GetArchitecture());
1739 LanguageRuntime *Process::GetLanguageRuntime(lldb::LanguageType language,
1740 bool retry_if_null) {
1744 LanguageRuntimeCollection::iterator pos;
1745 pos = m_language_runtimes.find(language);
1746 if (pos == m_language_runtimes.end() || (retry_if_null && !(*pos).second)) {
1747 lldb::LanguageRuntimeSP runtime_sp(
1748 LanguageRuntime::FindPlugin(this, language));
1750 m_language_runtimes[language] = runtime_sp;
1751 return runtime_sp.get();
1753 return (*pos).second.get();
1756 CPPLanguageRuntime *Process::GetCPPLanguageRuntime(bool retry_if_null) {
1757 LanguageRuntime *runtime =
1758 GetLanguageRuntime(eLanguageTypeC_plus_plus, retry_if_null);
1759 if (runtime != nullptr &&
1760 runtime->GetLanguageType() == eLanguageTypeC_plus_plus)
1761 return static_cast<CPPLanguageRuntime *>(runtime);
1765 ObjCLanguageRuntime *Process::GetObjCLanguageRuntime(bool retry_if_null) {
1766 LanguageRuntime *runtime =
1767 GetLanguageRuntime(eLanguageTypeObjC, retry_if_null);
1768 if (runtime != nullptr && runtime->GetLanguageType() == eLanguageTypeObjC)
1769 return static_cast<ObjCLanguageRuntime *>(runtime);
1773 bool Process::IsPossibleDynamicValue(ValueObject &in_value) {
1777 if (in_value.IsDynamic())
1779 LanguageType known_type = in_value.GetObjectRuntimeLanguage();
1781 if (known_type != eLanguageTypeUnknown && known_type != eLanguageTypeC) {
1782 LanguageRuntime *runtime = GetLanguageRuntime(known_type);
1783 return runtime ? runtime->CouldHaveDynamicValue(in_value) : false;
1786 LanguageRuntime *cpp_runtime = GetLanguageRuntime(eLanguageTypeC_plus_plus);
1787 if (cpp_runtime && cpp_runtime->CouldHaveDynamicValue(in_value))
1790 LanguageRuntime *objc_runtime = GetLanguageRuntime(eLanguageTypeObjC);
1791 return objc_runtime ? objc_runtime->CouldHaveDynamicValue(in_value) : false;
1794 void Process::SetDynamicCheckers(DynamicCheckerFunctions *dynamic_checkers) {
1795 m_dynamic_checkers_ap.reset(dynamic_checkers);
1798 BreakpointSiteList &Process::GetBreakpointSiteList() {
1799 return m_breakpoint_site_list;
1802 const BreakpointSiteList &Process::GetBreakpointSiteList() const {
1803 return m_breakpoint_site_list;
1806 void Process::DisableAllBreakpointSites() {
1807 m_breakpoint_site_list.ForEach([this](BreakpointSite *bp_site) -> void {
1808 // bp_site->SetEnabled(true);
1809 DisableBreakpointSite(bp_site);
1813 Status Process::ClearBreakpointSiteByID(lldb::user_id_t break_id) {
1814 Status error(DisableBreakpointSiteByID(break_id));
1816 if (error.Success())
1817 m_breakpoint_site_list.Remove(break_id);
1822 Status Process::DisableBreakpointSiteByID(lldb::user_id_t break_id) {
1824 BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID(break_id);
1826 if (bp_site_sp->IsEnabled())
1827 error = DisableBreakpointSite(bp_site_sp.get());
1829 error.SetErrorStringWithFormat("invalid breakpoint site ID: %" PRIu64,
1836 Status Process::EnableBreakpointSiteByID(lldb::user_id_t break_id) {
1838 BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID(break_id);
1840 if (!bp_site_sp->IsEnabled())
1841 error = EnableBreakpointSite(bp_site_sp.get());
1843 error.SetErrorStringWithFormat("invalid breakpoint site ID: %" PRIu64,
1850 Process::CreateBreakpointSite(const BreakpointLocationSP &owner,
1851 bool use_hardware) {
1852 addr_t load_addr = LLDB_INVALID_ADDRESS;
1854 bool show_error = true;
1855 switch (GetState()) {
1857 case eStateUnloaded:
1858 case eStateConnected:
1859 case eStateAttaching:
1860 case eStateLaunching:
1861 case eStateDetached:
1868 case eStateStepping:
1870 case eStateSuspended:
1871 show_error = IsAlive();
1875 // Reset the IsIndirect flag here, in case the location changes from pointing
1876 // to a indirect symbol to a regular symbol.
1877 owner->SetIsIndirect(false);
1879 if (owner->ShouldResolveIndirectFunctions()) {
1880 Symbol *symbol = owner->GetAddress().CalculateSymbolContextSymbol();
1881 if (symbol && symbol->IsIndirect()) {
1883 Address symbol_address = symbol->GetAddress();
1884 load_addr = ResolveIndirectFunction(&symbol_address, error);
1885 if (!error.Success() && show_error) {
1886 GetTarget().GetDebugger().GetErrorFile()->Printf(
1887 "warning: failed to resolve indirect function at 0x%" PRIx64
1888 " for breakpoint %i.%i: %s\n",
1889 symbol->GetLoadAddress(&GetTarget()),
1890 owner->GetBreakpoint().GetID(), owner->GetID(),
1891 error.AsCString() ? error.AsCString() : "unknown error");
1892 return LLDB_INVALID_BREAK_ID;
1894 Address resolved_address(load_addr);
1895 load_addr = resolved_address.GetOpcodeLoadAddress(&GetTarget());
1896 owner->SetIsIndirect(true);
1898 load_addr = owner->GetAddress().GetOpcodeLoadAddress(&GetTarget());
1900 load_addr = owner->GetAddress().GetOpcodeLoadAddress(&GetTarget());
1902 if (load_addr != LLDB_INVALID_ADDRESS) {
1903 BreakpointSiteSP bp_site_sp;
1905 // Look up this breakpoint site. If it exists, then add this new owner,
1906 // otherwise create a new breakpoint site and add it.
1908 bp_site_sp = m_breakpoint_site_list.FindByAddress(load_addr);
1911 bp_site_sp->AddOwner(owner);
1912 owner->SetBreakpointSite(bp_site_sp);
1913 return bp_site_sp->GetID();
1915 bp_site_sp.reset(new BreakpointSite(&m_breakpoint_site_list, owner,
1916 load_addr, use_hardware));
1918 Status error = EnableBreakpointSite(bp_site_sp.get());
1919 if (error.Success()) {
1920 owner->SetBreakpointSite(bp_site_sp);
1921 return m_breakpoint_site_list.Add(bp_site_sp);
1923 if (show_error || use_hardware) {
1924 // Report error for setting breakpoint...
1925 GetTarget().GetDebugger().GetErrorFile()->Printf(
1926 "warning: failed to set breakpoint site at 0x%" PRIx64
1927 " for breakpoint %i.%i: %s\n",
1928 load_addr, owner->GetBreakpoint().GetID(), owner->GetID(),
1929 error.AsCString() ? error.AsCString() : "unknown error");
1935 // We failed to enable the breakpoint
1936 return LLDB_INVALID_BREAK_ID;
1939 void Process::RemoveOwnerFromBreakpointSite(lldb::user_id_t owner_id,
1940 lldb::user_id_t owner_loc_id,
1941 BreakpointSiteSP &bp_site_sp) {
1942 uint32_t num_owners = bp_site_sp->RemoveOwner(owner_id, owner_loc_id);
1943 if (num_owners == 0) {
1944 // Don't try to disable the site if we don't have a live process anymore.
1946 DisableBreakpointSite(bp_site_sp.get());
1947 m_breakpoint_site_list.RemoveByAddress(bp_site_sp->GetLoadAddress());
1951 size_t Process::RemoveBreakpointOpcodesFromBuffer(addr_t bp_addr, size_t size,
1952 uint8_t *buf) const {
1953 size_t bytes_removed = 0;
1954 BreakpointSiteList bp_sites_in_range;
1956 if (m_breakpoint_site_list.FindInRange(bp_addr, bp_addr + size,
1957 bp_sites_in_range)) {
1958 bp_sites_in_range.ForEach([bp_addr, size,
1959 buf](BreakpointSite *bp_site) -> void {
1960 if (bp_site->GetType() == BreakpointSite::eSoftware) {
1961 addr_t intersect_addr;
1962 size_t intersect_size;
1963 size_t opcode_offset;
1964 if (bp_site->IntersectsRange(bp_addr, size, &intersect_addr,
1965 &intersect_size, &opcode_offset)) {
1966 assert(bp_addr <= intersect_addr && intersect_addr < bp_addr + size);
1967 assert(bp_addr < intersect_addr + intersect_size &&
1968 intersect_addr + intersect_size <= bp_addr + size);
1969 assert(opcode_offset + intersect_size <= bp_site->GetByteSize());
1970 size_t buf_offset = intersect_addr - bp_addr;
1971 ::memcpy(buf + buf_offset,
1972 bp_site->GetSavedOpcodeBytes() + opcode_offset,
1978 return bytes_removed;
1981 size_t Process::GetSoftwareBreakpointTrapOpcode(BreakpointSite *bp_site) {
1982 PlatformSP platform_sp(GetTarget().GetPlatform());
1984 return platform_sp->GetSoftwareBreakpointTrapOpcode(GetTarget(), bp_site);
1988 Status Process::EnableSoftwareBreakpoint(BreakpointSite *bp_site) {
1990 assert(bp_site != nullptr);
1991 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS));
1992 const addr_t bp_addr = bp_site->GetLoadAddress();
1995 "Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64,
1996 bp_site->GetID(), (uint64_t)bp_addr);
1997 if (bp_site->IsEnabled()) {
2000 "Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64
2001 " -- already enabled",
2002 bp_site->GetID(), (uint64_t)bp_addr);
2006 if (bp_addr == LLDB_INVALID_ADDRESS) {
2007 error.SetErrorString("BreakpointSite contains an invalid load address.");
2010 // Ask the lldb::Process subclass to fill in the correct software breakpoint
2011 // trap for the breakpoint site
2012 const size_t bp_opcode_size = GetSoftwareBreakpointTrapOpcode(bp_site);
2014 if (bp_opcode_size == 0) {
2015 error.SetErrorStringWithFormat("Process::GetSoftwareBreakpointTrapOpcode() "
2016 "returned zero, unable to get breakpoint "
2017 "trap for address 0x%" PRIx64,
2020 const uint8_t *const bp_opcode_bytes = bp_site->GetTrapOpcodeBytes();
2022 if (bp_opcode_bytes == nullptr) {
2023 error.SetErrorString(
2024 "BreakpointSite doesn't contain a valid breakpoint trap opcode.");
2028 // Save the original opcode by reading it
2029 if (DoReadMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), bp_opcode_size,
2030 error) == bp_opcode_size) {
2031 // Write a software breakpoint in place of the original opcode
2032 if (DoWriteMemory(bp_addr, bp_opcode_bytes, bp_opcode_size, error) ==
2034 uint8_t verify_bp_opcode_bytes[64];
2035 if (DoReadMemory(bp_addr, verify_bp_opcode_bytes, bp_opcode_size,
2036 error) == bp_opcode_size) {
2037 if (::memcmp(bp_opcode_bytes, verify_bp_opcode_bytes,
2038 bp_opcode_size) == 0) {
2039 bp_site->SetEnabled(true);
2040 bp_site->SetType(BreakpointSite::eSoftware);
2042 log->Printf("Process::EnableSoftwareBreakpoint (site_id = %d) "
2043 "addr = 0x%" PRIx64 " -- SUCCESS",
2044 bp_site->GetID(), (uint64_t)bp_addr);
2046 error.SetErrorString(
2047 "failed to verify the breakpoint trap in memory.");
2049 error.SetErrorString(
2050 "Unable to read memory to verify breakpoint trap.");
2052 error.SetErrorString("Unable to write breakpoint trap to memory.");
2054 error.SetErrorString("Unable to read memory at breakpoint address.");
2056 if (log && error.Fail())
2058 "Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64
2060 bp_site->GetID(), (uint64_t)bp_addr, error.AsCString());
2064 Status Process::DisableSoftwareBreakpoint(BreakpointSite *bp_site) {
2066 assert(bp_site != nullptr);
2067 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS));
2068 addr_t bp_addr = bp_site->GetLoadAddress();
2069 lldb::user_id_t breakID = bp_site->GetID();
2071 log->Printf("Process::DisableSoftwareBreakpoint (breakID = %" PRIu64
2072 ") addr = 0x%" PRIx64,
2073 breakID, (uint64_t)bp_addr);
2075 if (bp_site->IsHardware()) {
2076 error.SetErrorString("Breakpoint site is a hardware breakpoint.");
2077 } else if (bp_site->IsEnabled()) {
2078 const size_t break_op_size = bp_site->GetByteSize();
2079 const uint8_t *const break_op = bp_site->GetTrapOpcodeBytes();
2080 if (break_op_size > 0) {
2081 // Clear a software breakpoint instruction
2082 uint8_t curr_break_op[8];
2083 assert(break_op_size <= sizeof(curr_break_op));
2084 bool break_op_found = false;
2086 // Read the breakpoint opcode
2087 if (DoReadMemory(bp_addr, curr_break_op, break_op_size, error) ==
2089 bool verify = false;
2090 // Make sure the breakpoint opcode exists at this address
2091 if (::memcmp(curr_break_op, break_op, break_op_size) == 0) {
2092 break_op_found = true;
2093 // We found a valid breakpoint opcode at this address, now restore
2094 // the saved opcode.
2095 if (DoWriteMemory(bp_addr, bp_site->GetSavedOpcodeBytes(),
2096 break_op_size, error) == break_op_size) {
2099 error.SetErrorString(
2100 "Memory write failed when restoring original opcode.");
2102 error.SetErrorString(
2103 "Original breakpoint trap is no longer in memory.");
2104 // Set verify to true and so we can check if the original opcode has
2105 // already been restored
2110 uint8_t verify_opcode[8];
2111 assert(break_op_size < sizeof(verify_opcode));
2112 // Verify that our original opcode made it back to the inferior
2113 if (DoReadMemory(bp_addr, verify_opcode, break_op_size, error) ==
2115 // compare the memory we just read with the original opcode
2116 if (::memcmp(bp_site->GetSavedOpcodeBytes(), verify_opcode,
2117 break_op_size) == 0) {
2119 bp_site->SetEnabled(false);
2121 log->Printf("Process::DisableSoftwareBreakpoint (site_id = %d) "
2122 "addr = 0x%" PRIx64 " -- SUCCESS",
2123 bp_site->GetID(), (uint64_t)bp_addr);
2127 error.SetErrorString("Failed to restore original opcode.");
2130 error.SetErrorString("Failed to read memory to verify that "
2131 "breakpoint trap was restored.");
2134 error.SetErrorString(
2135 "Unable to read memory that should contain the breakpoint trap.");
2140 "Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64
2141 " -- already disabled",
2142 bp_site->GetID(), (uint64_t)bp_addr);
2148 "Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64
2150 bp_site->GetID(), (uint64_t)bp_addr, error.AsCString());
2154 // Uncomment to verify memory caching works after making changes to caching
2156 //#define VERIFY_MEMORY_READS
2158 size_t Process::ReadMemory(addr_t addr, void *buf, size_t size, Status &error) {
2160 if (!GetDisableMemoryCache()) {
2161 #if defined(VERIFY_MEMORY_READS)
2162 // Memory caching is enabled, with debug verification
2165 // Uncomment the line below to make sure memory caching is working.
2166 // I ran this through the test suite and got no assertions, so I am
2167 // pretty confident this is working well. If any changes are made to
2168 // memory caching, uncomment the line below and test your changes!
2170 // Verify all memory reads by using the cache first, then redundantly
2171 // reading the same memory from the inferior and comparing to make sure
2172 // everything is exactly the same.
2173 std::string verify_buf(size, '\0');
2174 assert(verify_buf.size() == size);
2175 const size_t cache_bytes_read =
2176 m_memory_cache.Read(this, addr, buf, size, error);
2177 Status verify_error;
2178 const size_t verify_bytes_read =
2179 ReadMemoryFromInferior(addr, const_cast<char *>(verify_buf.data()),
2180 verify_buf.size(), verify_error);
2181 assert(cache_bytes_read == verify_bytes_read);
2182 assert(memcmp(buf, verify_buf.data(), verify_buf.size()) == 0);
2183 assert(verify_error.Success() == error.Success());
2184 return cache_bytes_read;
2187 #else // !defined(VERIFY_MEMORY_READS)
2188 // Memory caching is enabled, without debug verification
2190 return m_memory_cache.Read(addr, buf, size, error);
2191 #endif // defined (VERIFY_MEMORY_READS)
2193 // Memory caching is disabled
2195 return ReadMemoryFromInferior(addr, buf, size, error);
2199 size_t Process::ReadCStringFromMemory(addr_t addr, std::string &out_str,
2203 addr_t curr_addr = addr;
2205 size_t length = ReadCStringFromMemory(curr_addr, buf, sizeof(buf), error);
2208 out_str.append(buf, length);
2209 // If we got "length - 1" bytes, we didn't get the whole C string, we need
2210 // to read some more characters
2211 if (length == sizeof(buf) - 1)
2212 curr_addr += length;
2216 return out_str.size();
2219 size_t Process::ReadStringFromMemory(addr_t addr, char *dst, size_t max_bytes,
2220 Status &error, size_t type_width) {
2221 size_t total_bytes_read = 0;
2222 if (dst && max_bytes && type_width && max_bytes >= type_width) {
2223 // Ensure a null terminator independent of the number of bytes that is
2225 memset(dst, 0, max_bytes);
2226 size_t bytes_left = max_bytes - type_width;
2228 const char terminator[4] = {'\0', '\0', '\0', '\0'};
2229 assert(sizeof(terminator) >= type_width && "Attempting to validate a "
2230 "string with more than 4 bytes "
2233 addr_t curr_addr = addr;
2234 const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize();
2235 char *curr_dst = dst;
2238 while (bytes_left > 0 && error.Success()) {
2239 addr_t cache_line_bytes_left =
2240 cache_line_size - (curr_addr % cache_line_size);
2241 addr_t bytes_to_read =
2242 std::min<addr_t>(bytes_left, cache_line_bytes_left);
2243 size_t bytes_read = ReadMemory(curr_addr, curr_dst, bytes_to_read, error);
2245 if (bytes_read == 0)
2248 // Search for a null terminator of correct size and alignment in
2250 size_t aligned_start = total_bytes_read - total_bytes_read % type_width;
2251 for (size_t i = aligned_start;
2252 i + type_width <= total_bytes_read + bytes_read; i += type_width)
2253 if (::memcmp(&dst[i], terminator, type_width) == 0) {
2258 total_bytes_read += bytes_read;
2259 curr_dst += bytes_read;
2260 curr_addr += bytes_read;
2261 bytes_left -= bytes_read;
2265 error.SetErrorString("invalid arguments");
2267 return total_bytes_read;
2270 // Deprecated in favor of ReadStringFromMemory which has wchar support and
2271 // correct code to find null terminators.
2272 size_t Process::ReadCStringFromMemory(addr_t addr, char *dst,
2274 Status &result_error) {
2275 size_t total_cstr_len = 0;
2276 if (dst && dst_max_len) {
2277 result_error.Clear();
2278 // NULL out everything just to be safe
2279 memset(dst, 0, dst_max_len);
2281 addr_t curr_addr = addr;
2282 const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize();
2283 size_t bytes_left = dst_max_len - 1;
2284 char *curr_dst = dst;
2286 while (bytes_left > 0) {
2287 addr_t cache_line_bytes_left =
2288 cache_line_size - (curr_addr % cache_line_size);
2289 addr_t bytes_to_read =
2290 std::min<addr_t>(bytes_left, cache_line_bytes_left);
2291 size_t bytes_read = ReadMemory(curr_addr, curr_dst, bytes_to_read, error);
2293 if (bytes_read == 0) {
2294 result_error = error;
2295 dst[total_cstr_len] = '\0';
2298 const size_t len = strlen(curr_dst);
2300 total_cstr_len += len;
2302 if (len < bytes_to_read)
2305 curr_dst += bytes_read;
2306 curr_addr += bytes_read;
2307 bytes_left -= bytes_read;
2311 result_error.SetErrorString("invalid arguments");
2313 result_error.Clear();
2315 return total_cstr_len;
2318 size_t Process::ReadMemoryFromInferior(addr_t addr, void *buf, size_t size,
2320 if (buf == nullptr || size == 0)
2323 size_t bytes_read = 0;
2324 uint8_t *bytes = (uint8_t *)buf;
2326 while (bytes_read < size) {
2327 const size_t curr_size = size - bytes_read;
2328 const size_t curr_bytes_read =
2329 DoReadMemory(addr + bytes_read, bytes + bytes_read, curr_size, error);
2330 bytes_read += curr_bytes_read;
2331 if (curr_bytes_read == curr_size || curr_bytes_read == 0)
2335 // Replace any software breakpoint opcodes that fall into this range back
2336 // into "buf" before we return
2338 RemoveBreakpointOpcodesFromBuffer(addr, bytes_read, (uint8_t *)buf);
2342 uint64_t Process::ReadUnsignedIntegerFromMemory(lldb::addr_t vm_addr,
2343 size_t integer_byte_size,
2344 uint64_t fail_value,
2347 if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, false, scalar,
2349 return scalar.ULongLong(fail_value);
2353 int64_t Process::ReadSignedIntegerFromMemory(lldb::addr_t vm_addr,
2354 size_t integer_byte_size,
2358 if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, true, scalar,
2360 return scalar.SLongLong(fail_value);
2364 addr_t Process::ReadPointerFromMemory(lldb::addr_t vm_addr, Status &error) {
2366 if (ReadScalarIntegerFromMemory(vm_addr, GetAddressByteSize(), false, scalar,
2368 return scalar.ULongLong(LLDB_INVALID_ADDRESS);
2369 return LLDB_INVALID_ADDRESS;
2372 bool Process::WritePointerToMemory(lldb::addr_t vm_addr, lldb::addr_t ptr_value,
2375 const uint32_t addr_byte_size = GetAddressByteSize();
2376 if (addr_byte_size <= 4)
2377 scalar = (uint32_t)ptr_value;
2380 return WriteScalarToMemory(vm_addr, scalar, addr_byte_size, error) ==
2384 size_t Process::WriteMemoryPrivate(addr_t addr, const void *buf, size_t size,
2386 size_t bytes_written = 0;
2387 const uint8_t *bytes = (const uint8_t *)buf;
2389 while (bytes_written < size) {
2390 const size_t curr_size = size - bytes_written;
2391 const size_t curr_bytes_written = DoWriteMemory(
2392 addr + bytes_written, bytes + bytes_written, curr_size, error);
2393 bytes_written += curr_bytes_written;
2394 if (curr_bytes_written == curr_size || curr_bytes_written == 0)
2397 return bytes_written;
2400 size_t Process::WriteMemory(addr_t addr, const void *buf, size_t size,
2402 #if defined(ENABLE_MEMORY_CACHING)
2403 m_memory_cache.Flush(addr, size);
2406 if (buf == nullptr || size == 0)
2409 m_mod_id.BumpMemoryID();
2411 // We need to write any data that would go where any current software traps
2412 // (enabled software breakpoints) any software traps (breakpoints) that we
2413 // may have placed in our tasks memory.
2415 BreakpointSiteList bp_sites_in_range;
2417 if (m_breakpoint_site_list.FindInRange(addr, addr + size,
2418 bp_sites_in_range)) {
2419 // No breakpoint sites overlap
2420 if (bp_sites_in_range.IsEmpty())
2421 return WriteMemoryPrivate(addr, buf, size, error);
2423 const uint8_t *ubuf = (const uint8_t *)buf;
2424 uint64_t bytes_written = 0;
2426 bp_sites_in_range.ForEach([this, addr, size, &bytes_written, &ubuf,
2427 &error](BreakpointSite *bp) -> void {
2429 if (error.Success()) {
2430 addr_t intersect_addr;
2431 size_t intersect_size;
2432 size_t opcode_offset;
2433 const bool intersects = bp->IntersectsRange(
2434 addr, size, &intersect_addr, &intersect_size, &opcode_offset);
2435 UNUSED_IF_ASSERT_DISABLED(intersects);
2437 assert(addr <= intersect_addr && intersect_addr < addr + size);
2438 assert(addr < intersect_addr + intersect_size &&
2439 intersect_addr + intersect_size <= addr + size);
2440 assert(opcode_offset + intersect_size <= bp->GetByteSize());
2442 // Check for bytes before this breakpoint
2443 const addr_t curr_addr = addr + bytes_written;
2444 if (intersect_addr > curr_addr) {
2445 // There are some bytes before this breakpoint that we need to just
2447 size_t curr_size = intersect_addr - curr_addr;
2448 size_t curr_bytes_written = WriteMemoryPrivate(
2449 curr_addr, ubuf + bytes_written, curr_size, error);
2450 bytes_written += curr_bytes_written;
2451 if (curr_bytes_written != curr_size) {
2452 // We weren't able to write all of the requested bytes, we are
2453 // done looping and will return the number of bytes that we have
2455 if (error.Success())
2456 error.SetErrorToGenericError();
2459 // Now write any bytes that would cover up any software breakpoints
2460 // directly into the breakpoint opcode buffer
2461 ::memcpy(bp->GetSavedOpcodeBytes() + opcode_offset,
2462 ubuf + bytes_written, intersect_size);
2463 bytes_written += intersect_size;
2467 if (bytes_written < size)
2468 WriteMemoryPrivate(addr + bytes_written, ubuf + bytes_written,
2469 size - bytes_written, error);
2472 return WriteMemoryPrivate(addr, buf, size, error);
2475 // Write any remaining bytes after the last breakpoint if we have any left
2476 return 0; // bytes_written;
2479 size_t Process::WriteScalarToMemory(addr_t addr, const Scalar &scalar,
2480 size_t byte_size, Status &error) {
2481 if (byte_size == UINT32_MAX)
2482 byte_size = scalar.GetByteSize();
2483 if (byte_size > 0) {
2485 const size_t mem_size =
2486 scalar.GetAsMemoryData(buf, byte_size, GetByteOrder(), error);
2488 return WriteMemory(addr, buf, mem_size, error);
2490 error.SetErrorString("failed to get scalar as memory data");
2492 error.SetErrorString("invalid scalar value");
2497 size_t Process::ReadScalarIntegerFromMemory(addr_t addr, uint32_t byte_size,
2498 bool is_signed, Scalar &scalar,
2501 if (byte_size == 0) {
2502 error.SetErrorString("byte size is zero");
2503 } else if (byte_size & (byte_size - 1)) {
2504 error.SetErrorStringWithFormat("byte size %u is not a power of 2",
2506 } else if (byte_size <= sizeof(uval)) {
2507 const size_t bytes_read = ReadMemory(addr, &uval, byte_size, error);
2508 if (bytes_read == byte_size) {
2509 DataExtractor data(&uval, sizeof(uval), GetByteOrder(),
2510 GetAddressByteSize());
2511 lldb::offset_t offset = 0;
2513 scalar = data.GetMaxU32(&offset, byte_size);
2515 scalar = data.GetMaxU64(&offset, byte_size);
2517 scalar.SignExtend(byte_size * 8);
2521 error.SetErrorStringWithFormat(
2522 "byte size of %u is too large for integer scalar type", byte_size);
2527 Status Process::WriteObjectFile(std::vector<ObjectFile::LoadableData> entries) {
2529 for (const auto &Entry : entries) {
2530 WriteMemory(Entry.Dest, Entry.Contents.data(), Entry.Contents.size(),
2532 if (!error.Success())
2538 #define USE_ALLOCATE_MEMORY_CACHE 1
2539 addr_t Process::AllocateMemory(size_t size, uint32_t permissions,
2541 if (GetPrivateState() != eStateStopped) {
2542 error.SetErrorToGenericError();
2543 return LLDB_INVALID_ADDRESS;
2546 #if defined(USE_ALLOCATE_MEMORY_CACHE)
2547 return m_allocated_memory_cache.AllocateMemory(size, permissions, error);
2549 addr_t allocated_addr = DoAllocateMemory(size, permissions, error);
2550 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
2552 log->Printf("Process::AllocateMemory(size=%" PRIu64
2553 ", permissions=%s) => 0x%16.16" PRIx64
2554 " (m_stop_id = %u m_memory_id = %u)",
2555 (uint64_t)size, GetPermissionsAsCString(permissions),
2556 (uint64_t)allocated_addr, m_mod_id.GetStopID(),
2557 m_mod_id.GetMemoryID());
2558 return allocated_addr;
2562 addr_t Process::CallocateMemory(size_t size, uint32_t permissions,
2564 addr_t return_addr = AllocateMemory(size, permissions, error);
2565 if (error.Success()) {
2566 std::string buffer(size, 0);
2567 WriteMemory(return_addr, buffer.c_str(), size, error);
2572 bool Process::CanJIT() {
2573 if (m_can_jit == eCanJITDontKnow) {
2574 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
2577 uint64_t allocated_memory = AllocateMemory(
2578 8, ePermissionsReadable | ePermissionsWritable | ePermissionsExecutable,
2581 if (err.Success()) {
2582 m_can_jit = eCanJITYes;
2584 log->Printf("Process::%s pid %" PRIu64
2585 " allocation test passed, CanJIT () is true",
2586 __FUNCTION__, GetID());
2588 m_can_jit = eCanJITNo;
2590 log->Printf("Process::%s pid %" PRIu64
2591 " allocation test failed, CanJIT () is false: %s",
2592 __FUNCTION__, GetID(), err.AsCString());
2595 DeallocateMemory(allocated_memory);
2598 return m_can_jit == eCanJITYes;
2601 void Process::SetCanJIT(bool can_jit) {
2602 m_can_jit = (can_jit ? eCanJITYes : eCanJITNo);
2605 void Process::SetCanRunCode(bool can_run_code) {
2606 SetCanJIT(can_run_code);
2607 m_can_interpret_function_calls = can_run_code;
2610 Status Process::DeallocateMemory(addr_t ptr) {
2612 #if defined(USE_ALLOCATE_MEMORY_CACHE)
2613 if (!m_allocated_memory_cache.DeallocateMemory(ptr)) {
2614 error.SetErrorStringWithFormat(
2615 "deallocation of memory at 0x%" PRIx64 " failed.", (uint64_t)ptr);
2618 error = DoDeallocateMemory(ptr);
2620 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
2622 log->Printf("Process::DeallocateMemory(addr=0x%16.16" PRIx64
2623 ") => err = %s (m_stop_id = %u, m_memory_id = %u)",
2624 ptr, error.AsCString("SUCCESS"), m_mod_id.GetStopID(),
2625 m_mod_id.GetMemoryID());
2630 ModuleSP Process::ReadModuleFromMemory(const FileSpec &file_spec,
2631 lldb::addr_t header_addr,
2632 size_t size_to_read) {
2633 Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
2635 log->Printf("Process::ReadModuleFromMemory reading %s binary from memory",
2636 file_spec.GetPath().c_str());
2638 ModuleSP module_sp(new Module(file_spec, ArchSpec()));
2641 ObjectFile *objfile = module_sp->GetMemoryObjectFile(
2642 shared_from_this(), header_addr, error, size_to_read);
2649 bool Process::GetLoadAddressPermissions(lldb::addr_t load_addr,
2650 uint32_t &permissions) {
2651 MemoryRegionInfo range_info;
2653 Status error(GetMemoryRegionInfo(load_addr, range_info));
2654 if (!error.Success())
2656 if (range_info.GetReadable() == MemoryRegionInfo::eDontKnow ||
2657 range_info.GetWritable() == MemoryRegionInfo::eDontKnow ||
2658 range_info.GetExecutable() == MemoryRegionInfo::eDontKnow) {
2662 if (range_info.GetReadable() == MemoryRegionInfo::eYes)
2663 permissions |= lldb::ePermissionsReadable;
2665 if (range_info.GetWritable() == MemoryRegionInfo::eYes)
2666 permissions |= lldb::ePermissionsWritable;
2668 if (range_info.GetExecutable() == MemoryRegionInfo::eYes)
2669 permissions |= lldb::ePermissionsExecutable;
2674 Status Process::EnableWatchpoint(Watchpoint *watchpoint, bool notify) {
2676 error.SetErrorString("watchpoints are not supported");
2680 Status Process::DisableWatchpoint(Watchpoint *watchpoint, bool notify) {
2682 error.SetErrorString("watchpoints are not supported");
2687 Process::WaitForProcessStopPrivate(EventSP &event_sp,
2688 const Timeout<std::micro> &timeout) {
2693 state = GetStateChangedEventsPrivate(event_sp, timeout);
2695 if (StateIsStoppedState(state, false))
2698 // If state is invalid, then we timed out
2699 if (state == eStateInvalid)
2703 HandlePrivateEvent(event_sp);
2708 void Process::LoadOperatingSystemPlugin(bool flush) {
2710 m_thread_list.Clear();
2711 m_os_ap.reset(OperatingSystem::FindPlugin(this, nullptr));
2716 Status Process::Launch(ProcessLaunchInfo &launch_info) {
2720 m_jit_loaders_ap.reset();
2721 m_system_runtime_ap.reset();
2723 m_process_input_reader.reset();
2725 Module *exe_module = GetTarget().GetExecutableModulePointer();
2727 char local_exec_file_path[PATH_MAX];
2728 char platform_exec_file_path[PATH_MAX];
2729 exe_module->GetFileSpec().GetPath(local_exec_file_path,
2730 sizeof(local_exec_file_path));
2731 exe_module->GetPlatformFileSpec().GetPath(platform_exec_file_path,
2732 sizeof(platform_exec_file_path));
2733 if (FileSystem::Instance().Exists(exe_module->GetFileSpec())) {
2734 // Install anything that might need to be installed prior to launching.
2735 // For host systems, this will do nothing, but if we are connected to a
2736 // remote platform it will install any needed binaries
2737 error = GetTarget().Install(&launch_info);
2741 if (PrivateStateThreadIsValid())
2742 PausePrivateStateThread();
2744 error = WillLaunch(exe_module);
2745 if (error.Success()) {
2746 const bool restarted = false;
2747 SetPublicState(eStateLaunching, restarted);
2748 m_should_detach = false;
2750 if (m_public_run_lock.TrySetRunning()) {
2751 // Now launch using these arguments.
2752 error = DoLaunch(exe_module, launch_info);
2754 // This shouldn't happen
2755 error.SetErrorString("failed to acquire process run lock");
2759 if (GetID() != LLDB_INVALID_PROCESS_ID) {
2760 SetID(LLDB_INVALID_PROCESS_ID);
2761 const char *error_string = error.AsCString();
2762 if (error_string == nullptr)
2763 error_string = "launch failed";
2764 SetExitStatus(-1, error_string);
2769 // Now wait for the process to launch and return control to us, and then call
2771 StateType state = WaitForProcessStopPrivate(event_sp, seconds(10));
2773 if (state == eStateInvalid || !event_sp) {
2774 // We were able to launch the process, but we failed to catch the
2776 error.SetErrorString("failed to catch stop after launch");
2777 SetExitStatus(0, "failed to catch stop after launch");
2779 } else if (state == eStateStopped || state == eStateCrashed) {
2782 DynamicLoader *dyld = GetDynamicLoader();
2786 GetJITLoaders().DidLaunch();
2788 SystemRuntime *system_runtime = GetSystemRuntime();
2790 system_runtime->DidLaunch();
2793 LoadOperatingSystemPlugin(false);
2795 // We successfully launched the process and stopped, now it the
2796 // right time to set up signal filters before resuming.
2797 UpdateAutomaticSignalFiltering();
2799 // Note, the stop event was consumed above, but not handled. This
2800 // was done to give DidLaunch a chance to run. The target is either
2801 // stopped or crashed. Directly set the state. This is done to
2802 // prevent a stop message with a bunch of spurious output on thread
2803 // status, as well as not pop a ProcessIOHandler.
2804 SetPublicState(state, false);
2806 if (PrivateStateThreadIsValid())
2807 ResumePrivateStateThread();
2809 StartPrivateStateThread();
2811 // Target was stopped at entry as was intended. Need to notify the
2812 // listeners about it.
2813 if (state == eStateStopped &&
2814 launch_info.GetFlags().Test(eLaunchFlagStopAtEntry))
2815 HandlePrivateEvent(event_sp);
2816 } else if (state == eStateExited) {
2817 // We exited while trying to launch somehow. Don't call DidLaunch
2818 // as that's not likely to work, and return an invalid pid.
2819 HandlePrivateEvent(event_sp);
2824 error.SetErrorStringWithFormat("file doesn't exist: '%s'",
2825 local_exec_file_path);
2831 Status Process::LoadCore() {
2832 Status error = DoLoadCore();
2833 if (error.Success()) {
2834 ListenerSP listener_sp(
2835 Listener::MakeListener("lldb.process.load_core_listener"));
2836 HijackProcessEvents(listener_sp);
2838 if (PrivateStateThreadIsValid())
2839 ResumePrivateStateThread();
2841 StartPrivateStateThread();
2843 DynamicLoader *dyld = GetDynamicLoader();
2847 GetJITLoaders().DidAttach();
2849 SystemRuntime *system_runtime = GetSystemRuntime();
2851 system_runtime->DidAttach();
2854 LoadOperatingSystemPlugin(false);
2856 // We successfully loaded a core file, now pretend we stopped so we can
2857 // show all of the threads in the core file and explore the crashed state.
2858 SetPrivateState(eStateStopped);
2860 // Wait for a stopped event since we just posted one above...
2861 lldb::EventSP event_sp;
2863 WaitForProcessToStop(seconds(10), &event_sp, true, listener_sp);
2865 if (!StateIsStoppedState(state, false)) {
2866 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
2868 log->Printf("Process::Halt() failed to stop, state is: %s",
2869 StateAsCString(state));
2870 error.SetErrorString(
2871 "Did not get stopped event after loading the core file.");
2873 RestoreProcessEvents();
2878 DynamicLoader *Process::GetDynamicLoader() {
2880 m_dyld_ap.reset(DynamicLoader::FindPlugin(this, nullptr));
2881 return m_dyld_ap.get();
2884 const lldb::DataBufferSP Process::GetAuxvData() { return DataBufferSP(); }
2886 JITLoaderList &Process::GetJITLoaders() {
2887 if (!m_jit_loaders_ap) {
2888 m_jit_loaders_ap.reset(new JITLoaderList());
2889 JITLoader::LoadPlugins(this, *m_jit_loaders_ap);
2891 return *m_jit_loaders_ap;
2894 SystemRuntime *Process::GetSystemRuntime() {
2895 if (!m_system_runtime_ap)
2896 m_system_runtime_ap.reset(SystemRuntime::FindPlugin(this));
2897 return m_system_runtime_ap.get();
2900 Process::AttachCompletionHandler::AttachCompletionHandler(Process *process,
2901 uint32_t exec_count)
2902 : NextEventAction(process), m_exec_count(exec_count) {
2903 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
2906 "Process::AttachCompletionHandler::%s process=%p, exec_count=%" PRIu32,
2907 __FUNCTION__, static_cast<void *>(process), exec_count);
2910 Process::NextEventAction::EventActionResult
2911 Process::AttachCompletionHandler::PerformAction(lldb::EventSP &event_sp) {
2912 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
2914 StateType state = ProcessEventData::GetStateFromEvent(event_sp.get());
2917 "Process::AttachCompletionHandler::%s called with state %s (%d)",
2918 __FUNCTION__, StateAsCString(state), static_cast<int>(state));
2921 case eStateAttaching:
2922 return eEventActionSuccess;
2925 case eStateConnected:
2926 return eEventActionRetry;
2930 // During attach, prior to sending the eStateStopped event,
2931 // lldb_private::Process subclasses must set the new process ID.
2932 assert(m_process->GetID() != LLDB_INVALID_PROCESS_ID);
2933 // We don't want these events to be reported, so go set the
2934 // ShouldReportStop here:
2935 m_process->GetThreadList().SetShouldReportStop(eVoteNo);
2937 if (m_exec_count > 0) {
2941 log->Printf("Process::AttachCompletionHandler::%s state %s: reduced "
2942 "remaining exec count to %" PRIu32 ", requesting resume",
2943 __FUNCTION__, StateAsCString(state), m_exec_count);
2946 return eEventActionRetry;
2949 log->Printf("Process::AttachCompletionHandler::%s state %s: no more "
2950 "execs expected to start, continuing with attach",
2951 __FUNCTION__, StateAsCString(state));
2953 m_process->CompleteAttach();
2954 return eEventActionSuccess;
2964 m_exit_string.assign("No valid Process");
2965 return eEventActionExit;
2968 Process::NextEventAction::EventActionResult
2969 Process::AttachCompletionHandler::HandleBeingInterrupted() {
2970 return eEventActionSuccess;
2973 const char *Process::AttachCompletionHandler::GetExitString() {
2974 return m_exit_string.c_str();
2977 ListenerSP ProcessAttachInfo::GetListenerForProcess(Debugger &debugger) {
2979 return m_listener_sp;
2981 return debugger.GetListener();
2984 Status Process::Attach(ProcessAttachInfo &attach_info) {
2986 m_process_input_reader.reset();
2988 m_jit_loaders_ap.reset();
2989 m_system_runtime_ap.reset();
2992 lldb::pid_t attach_pid = attach_info.GetProcessID();
2994 if (attach_pid == LLDB_INVALID_PROCESS_ID) {
2995 char process_name[PATH_MAX];
2997 if (attach_info.GetExecutableFile().GetPath(process_name,
2998 sizeof(process_name))) {
2999 const bool wait_for_launch = attach_info.GetWaitForLaunch();
3001 if (wait_for_launch) {
3002 error = WillAttachToProcessWithName(process_name, wait_for_launch);
3003 if (error.Success()) {
3004 if (m_public_run_lock.TrySetRunning()) {
3005 m_should_detach = true;
3006 const bool restarted = false;
3007 SetPublicState(eStateAttaching, restarted);
3008 // Now attach using these arguments.
3009 error = DoAttachToProcessWithName(process_name, attach_info);
3011 // This shouldn't happen
3012 error.SetErrorString("failed to acquire process run lock");
3016 if (GetID() != LLDB_INVALID_PROCESS_ID) {
3017 SetID(LLDB_INVALID_PROCESS_ID);
3018 if (error.AsCString() == nullptr)
3019 error.SetErrorString("attach failed");
3021 SetExitStatus(-1, error.AsCString());
3024 SetNextEventAction(new Process::AttachCompletionHandler(
3025 this, attach_info.GetResumeCount()));
3026 StartPrivateStateThread();
3031 ProcessInstanceInfoList process_infos;
3032 PlatformSP platform_sp(GetTarget().GetPlatform());
3035 ProcessInstanceInfoMatch match_info;
3036 match_info.GetProcessInfo() = attach_info;
3037 match_info.SetNameMatchType(NameMatch::Equals);
3038 platform_sp->FindProcesses(match_info, process_infos);
3039 const uint32_t num_matches = process_infos.GetSize();
3040 if (num_matches == 1) {
3041 attach_pid = process_infos.GetProcessIDAtIndex(0);
3042 // Fall through and attach using the above process ID
3044 match_info.GetProcessInfo().GetExecutableFile().GetPath(
3045 process_name, sizeof(process_name));
3046 if (num_matches > 1) {
3048 ProcessInstanceInfo::DumpTableHeader(s, platform_sp.get(), true,
3050 for (size_t i = 0; i < num_matches; i++) {
3051 process_infos.GetProcessInfoAtIndex(i).DumpAsTableRow(
3052 s, platform_sp.get(), true, false);
3054 error.SetErrorStringWithFormat(
3055 "more than one process named %s:\n%s", process_name,
3058 error.SetErrorStringWithFormat(
3059 "could not find a process named %s", process_name);
3062 error.SetErrorString(
3063 "invalid platform, can't find processes by name");
3068 error.SetErrorString("invalid process name");
3072 if (attach_pid != LLDB_INVALID_PROCESS_ID) {
3073 error = WillAttachToProcessWithID(attach_pid);
3074 if (error.Success()) {
3076 if (m_public_run_lock.TrySetRunning()) {
3077 // Now attach using these arguments.
3078 m_should_detach = true;
3079 const bool restarted = false;
3080 SetPublicState(eStateAttaching, restarted);
3081 error = DoAttachToProcessWithID(attach_pid, attach_info);
3083 // This shouldn't happen
3084 error.SetErrorString("failed to acquire process run lock");
3087 if (error.Success()) {
3088 SetNextEventAction(new Process::AttachCompletionHandler(
3089 this, attach_info.GetResumeCount()));
3090 StartPrivateStateThread();
3092 if (GetID() != LLDB_INVALID_PROCESS_ID)
3093 SetID(LLDB_INVALID_PROCESS_ID);
3095 const char *error_string = error.AsCString();
3096 if (error_string == nullptr)
3097 error_string = "attach failed";
3099 SetExitStatus(-1, error_string);
3106 void Process::CompleteAttach() {
3107 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS |
3108 LIBLLDB_LOG_TARGET));
3110 log->Printf("Process::%s()", __FUNCTION__);
3112 // Let the process subclass figure out at much as it can about the process
3113 // before we go looking for a dynamic loader plug-in.
3114 ArchSpec process_arch;
3115 DidAttach(process_arch);
3117 if (process_arch.IsValid()) {
3118 GetTarget().SetArchitecture(process_arch);
3120 const char *triple_str = process_arch.GetTriple().getTriple().c_str();
3121 log->Printf("Process::%s replacing process architecture with DidAttach() "
3123 __FUNCTION__, triple_str ? triple_str : "<null>");
3127 // We just attached. If we have a platform, ask it for the process
3128 // architecture, and if it isn't the same as the one we've already set,
3129 // switch architectures.
3130 PlatformSP platform_sp(GetTarget().GetPlatform());
3131 assert(platform_sp);
3133 const ArchSpec &target_arch = GetTarget().GetArchitecture();
3134 if (target_arch.IsValid() &&
3135 !platform_sp->IsCompatibleArchitecture(target_arch, false, nullptr)) {
3136 ArchSpec platform_arch;
3138 platform_sp->GetPlatformForArchitecture(target_arch, &platform_arch);
3140 GetTarget().SetPlatform(platform_sp);
3141 GetTarget().SetArchitecture(platform_arch);
3143 log->Printf("Process::%s switching platform to %s and architecture "
3144 "to %s based on info from attach",
3145 __FUNCTION__, platform_sp->GetName().AsCString(""),
3146 platform_arch.GetTriple().getTriple().c_str());
3148 } else if (!process_arch.IsValid()) {
3149 ProcessInstanceInfo process_info;
3150 GetProcessInfo(process_info);
3151 const ArchSpec &process_arch = process_info.GetArchitecture();
3152 if (process_arch.IsValid() &&
3153 !GetTarget().GetArchitecture().IsExactMatch(process_arch)) {
3154 GetTarget().SetArchitecture(process_arch);
3156 log->Printf("Process::%s switching architecture to %s based on info "
3157 "the platform retrieved for pid %" PRIu64,
3159 process_arch.GetTriple().getTriple().c_str(), GetID());
3164 // We have completed the attach, now it is time to find the dynamic loader
3166 DynamicLoader *dyld = GetDynamicLoader();
3170 ModuleSP exe_module_sp = GetTarget().GetExecutableModule();
3171 log->Printf("Process::%s after DynamicLoader::DidAttach(), target "
3172 "executable is %s (using %s plugin)",
3174 exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str()
3176 dyld->GetPluginName().AsCString("<unnamed>"));
3180 GetJITLoaders().DidAttach();
3182 SystemRuntime *system_runtime = GetSystemRuntime();
3183 if (system_runtime) {
3184 system_runtime->DidAttach();
3186 ModuleSP exe_module_sp = GetTarget().GetExecutableModule();
3187 log->Printf("Process::%s after SystemRuntime::DidAttach(), target "
3188 "executable is %s (using %s plugin)",
3190 exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str()
3192 system_runtime->GetPluginName().AsCString("<unnamed>"));
3197 LoadOperatingSystemPlugin(false);
3198 // Figure out which one is the executable, and set that in our target:
3199 const ModuleList &target_modules = GetTarget().GetImages();
3200 std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex());
3201 size_t num_modules = target_modules.GetSize();
3202 ModuleSP new_executable_module_sp;
3204 for (size_t i = 0; i < num_modules; i++) {
3205 ModuleSP module_sp(target_modules.GetModuleAtIndexUnlocked(i));
3206 if (module_sp && module_sp->IsExecutable()) {
3207 if (GetTarget().GetExecutableModulePointer() != module_sp.get())
3208 new_executable_module_sp = module_sp;
3212 if (new_executable_module_sp) {
3213 GetTarget().SetExecutableModule(new_executable_module_sp,
3216 ModuleSP exe_module_sp = GetTarget().GetExecutableModule();
3218 "Process::%s after looping through modules, target executable is %s",
3220 exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str()
3226 Status Process::ConnectRemote(Stream *strm, llvm::StringRef remote_url) {
3228 m_process_input_reader.reset();
3230 // Find the process and its architecture. Make sure it matches the
3231 // architecture of the current Target, and if not adjust it.
3233 Status error(DoConnectRemote(strm, remote_url));
3234 if (error.Success()) {
3235 if (GetID() != LLDB_INVALID_PROCESS_ID) {
3237 StateType state = WaitForProcessStopPrivate(event_sp, llvm::None);
3239 if (state == eStateStopped || state == eStateCrashed) {
3240 // If we attached and actually have a process on the other end, then
3241 // this ended up being the equivalent of an attach.
3244 // This delays passing the stopped event to listeners till
3245 // CompleteAttach gets a chance to complete...
3246 HandlePrivateEvent(event_sp);
3250 if (PrivateStateThreadIsValid())
3251 ResumePrivateStateThread();
3253 StartPrivateStateThread();
3258 Status Process::PrivateResume() {
3259 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS |
3262 log->Printf("Process::PrivateResume() m_stop_id = %u, public state: %s "
3263 "private state: %s",
3264 m_mod_id.GetStopID(), StateAsCString(m_public_state.GetValue()),
3265 StateAsCString(m_private_state.GetValue()));
3267 // If signals handing status changed we might want to update our signal
3268 // filters before resuming.
3269 UpdateAutomaticSignalFiltering();
3271 Status error(WillResume());
3272 // Tell the process it is about to resume before the thread list
3273 if (error.Success()) {
3274 // Now let the thread list know we are about to resume so it can let all of
3275 // our threads know that they are about to be resumed. Threads will each be
3276 // called with Thread::WillResume(StateType) where StateType contains the
3277 // state that they are supposed to have when the process is resumed
3278 // (suspended/running/stepping). Threads should also check their resume
3279 // signal in lldb::Thread::GetResumeSignal() to see if they are supposed to
3280 // start back up with a signal.
3281 if (m_thread_list.WillResume()) {
3282 // Last thing, do the PreResumeActions.
3283 if (!RunPreResumeActions()) {
3284 error.SetErrorStringWithFormat(
3285 "Process::PrivateResume PreResumeActions failed, not resuming.");
3287 m_mod_id.BumpResumeID();
3289 if (error.Success()) {
3291 m_thread_list.DidResume();
3293 log->Printf("Process thinks the process has resumed.");
3297 "Process::PrivateResume() DoResume failed.");
3302 // Somebody wanted to run without running (e.g. we were faking a step
3303 // from one frame of a set of inlined frames that share the same PC to
3304 // another.) So generate a continue & a stopped event, and let the world
3308 "Process::PrivateResume() asked to simulate a start & stop.");
3310 SetPrivateState(eStateRunning);
3311 SetPrivateState(eStateStopped);
3314 log->Printf("Process::PrivateResume() got an error \"%s\".",
3315 error.AsCString("<unknown error>"));
3319 Status Process::Halt(bool clear_thread_plans, bool use_run_lock) {
3320 if (!StateIsRunningState(m_public_state.GetValue()))
3321 return Status("Process is not running.");
3323 // Don't clear the m_clear_thread_plans_on_stop, only set it to true if in
3324 // case it was already set and some thread plan logic calls halt on its own.
3325 m_clear_thread_plans_on_stop |= clear_thread_plans;
3327 ListenerSP halt_listener_sp(
3328 Listener::MakeListener("lldb.process.halt_listener"));
3329 HijackProcessEvents(halt_listener_sp);
3333 SendAsyncInterrupt();
3335 if (m_public_state.GetValue() == eStateAttaching) {
3336 // Don't hijack and eat the eStateExited as the code that was doing the
3337 // attach will be waiting for this event...
3338 RestoreProcessEvents();
3339 SetExitStatus(SIGKILL, "Cancelled async attach.");
3344 // Wait for 10 second for the process to stop.
3345 StateType state = WaitForProcessToStop(
3346 seconds(10), &event_sp, true, halt_listener_sp, nullptr, use_run_lock);
3347 RestoreProcessEvents();
3349 if (state == eStateInvalid || !event_sp) {
3350 // We timed out and didn't get a stop event...
3351 return Status("Halt timed out. State = %s", StateAsCString(GetState()));
3354 BroadcastEvent(event_sp);
3359 Status Process::StopForDestroyOrDetach(lldb::EventSP &exit_event_sp) {
3362 // Check both the public & private states here. If we're hung evaluating an
3363 // expression, for instance, then the public state will be stopped, but we
3364 // still need to interrupt.
3365 if (m_public_state.GetValue() == eStateRunning ||
3366 m_private_state.GetValue() == eStateRunning) {
3367 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
3369 log->Printf("Process::%s() About to stop.", __FUNCTION__);
3371 ListenerSP listener_sp(
3372 Listener::MakeListener("lldb.Process.StopForDestroyOrDetach.hijack"));
3373 HijackProcessEvents(listener_sp);
3375 SendAsyncInterrupt();
3377 // Consume the interrupt event.
3379 WaitForProcessToStop(seconds(10), &exit_event_sp, true, listener_sp);
3381 RestoreProcessEvents();
3383 // If the process exited while we were waiting for it to stop, put the
3384 // exited event into the shared pointer passed in and return. Our caller
3385 // doesn't need to do anything else, since they don't have a process
3388 if (state == eStateExited || m_private_state.GetValue() == eStateExited) {
3390 log->Printf("Process::%s() Process exited while waiting to stop.",
3394 exit_event_sp.reset(); // It is ok to consume any non-exit stop events
3396 if (state != eStateStopped) {
3398 log->Printf("Process::%s() failed to stop, state is: %s", __FUNCTION__,
3399 StateAsCString(state));
3400 // If we really couldn't stop the process then we should just error out
3401 // here, but if the lower levels just bobbled sending the event and we
3402 // really are stopped, then continue on.
3403 StateType private_state = m_private_state.GetValue();
3404 if (private_state != eStateStopped) {
3406 "Attempt to stop the target in order to detach timed out. "
3408 StateAsCString(GetState()));
3415 Status Process::Detach(bool keep_stopped) {
3416 EventSP exit_event_sp;
3418 m_destroy_in_process = true;
3420 error = WillDetach();
3422 if (error.Success()) {
3423 if (DetachRequiresHalt()) {
3424 error = StopForDestroyOrDetach(exit_event_sp);
3425 if (!error.Success()) {
3426 m_destroy_in_process = false;
3428 } else if (exit_event_sp) {
3429 // We shouldn't need to do anything else here. There's no process left
3430 // to detach from...
3431 StopPrivateStateThread();
3432 m_destroy_in_process = false;
3437 m_thread_list.DiscardThreadPlans();
3438 DisableAllBreakpointSites();
3440 error = DoDetach(keep_stopped);
3441 if (error.Success()) {
3443 StopPrivateStateThread();
3448 m_destroy_in_process = false;
3450 // If we exited when we were waiting for a process to stop, then forward the
3451 // event here so we don't lose the event
3452 if (exit_event_sp) {
3453 // Directly broadcast our exited event because we shut down our private
3454 // state thread above
3455 BroadcastEvent(exit_event_sp);
3458 // If we have been interrupted (to kill us) in the middle of running, we may
3459 // not end up propagating the last events through the event system, in which
3460 // case we might strand the write lock. Unlock it here so when we do to tear
3461 // down the process we don't get an error destroying the lock.
3463 m_public_run_lock.SetStopped();
3467 Status Process::Destroy(bool force_kill) {
3469 // Tell ourselves we are in the process of destroying the process, so that we
3470 // don't do any unnecessary work that might hinder the destruction. Remember
3471 // to set this back to false when we are done. That way if the attempt
3472 // failed and the process stays around for some reason it won't be in a
3476 m_should_detach = false;
3478 if (GetShouldDetach()) {
3479 // FIXME: This will have to be a process setting:
3480 bool keep_stopped = false;
3481 Detach(keep_stopped);
3484 m_destroy_in_process = true;
3486 Status error(WillDestroy());
3487 if (error.Success()) {
3488 EventSP exit_event_sp;
3489 if (DestroyRequiresHalt()) {
3490 error = StopForDestroyOrDetach(exit_event_sp);
3493 if (m_public_state.GetValue() != eStateRunning) {
3494 // Ditch all thread plans, and remove all our breakpoints: in case we
3495 // have to restart the target to kill it, we don't want it hitting a
3496 // breakpoint... Only do this if we've stopped, however, since if we
3497 // didn't manage to halt it above, then we're not going to have much luck
3499 m_thread_list.DiscardThreadPlans();
3500 DisableAllBreakpointSites();
3503 error = DoDestroy();
3504 if (error.Success()) {
3506 StopPrivateStateThread();
3508 m_stdio_communication.Disconnect();
3509 m_stdio_communication.StopReadThread();
3510 m_stdin_forward = false;
3512 if (m_process_input_reader) {
3513 m_process_input_reader->SetIsDone(true);
3514 m_process_input_reader->Cancel();
3515 m_process_input_reader.reset();
3518 // If we exited when we were waiting for a process to stop, then forward
3519 // the event here so we don't lose the event
3520 if (exit_event_sp) {
3521 // Directly broadcast our exited event because we shut down our private
3522 // state thread above
3523 BroadcastEvent(exit_event_sp);
3526 // If we have been interrupted (to kill us) in the middle of running, we
3527 // may not end up propagating the last events through the event system, in
3528 // which case we might strand the write lock. Unlock it here so when we do
3529 // to tear down the process we don't get an error destroying the lock.
3530 m_public_run_lock.SetStopped();
3533 m_destroy_in_process = false;
3538 Status Process::Signal(int signal) {
3539 Status error(WillSignal());
3540 if (error.Success()) {
3541 error = DoSignal(signal);
3542 if (error.Success())
3548 void Process::SetUnixSignals(UnixSignalsSP &&signals_sp) {
3549 assert(signals_sp && "null signals_sp");
3550 m_unix_signals_sp = signals_sp;
3553 const lldb::UnixSignalsSP &Process::GetUnixSignals() {
3554 assert(m_unix_signals_sp && "null m_unix_signals_sp");
3555 return m_unix_signals_sp;
3558 lldb::ByteOrder Process::GetByteOrder() const {
3559 return GetTarget().GetArchitecture().GetByteOrder();
3562 uint32_t Process::GetAddressByteSize() const {
3563 return GetTarget().GetArchitecture().GetAddressByteSize();
3566 bool Process::ShouldBroadcastEvent(Event *event_ptr) {
3567 const StateType state =
3568 Process::ProcessEventData::GetStateFromEvent(event_ptr);
3569 bool return_value = true;
3570 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_EVENTS |
3571 LIBLLDB_LOG_PROCESS));
3574 case eStateDetached:
3576 case eStateUnloaded:
3577 m_stdio_communication.SynchronizeWithReadThread();
3578 m_stdio_communication.Disconnect();
3579 m_stdio_communication.StopReadThread();
3580 m_stdin_forward = false;
3583 case eStateConnected:
3584 case eStateAttaching:
3585 case eStateLaunching:
3586 // These events indicate changes in the state of the debugging session,
3587 // always report them.
3588 return_value = true;
3591 // We stopped for no apparent reason, don't report it.
3592 return_value = false;
3595 case eStateStepping:
3596 // If we've started the target running, we handle the cases where we are
3597 // already running and where there is a transition from stopped to running
3598 // differently. running -> running: Automatically suppress extra running
3599 // events stopped -> running: Report except when there is one or more no
3601 // and no yes votes.
3602 SynchronouslyNotifyStateChanged(state);
3603 if (m_force_next_event_delivery)
3604 return_value = true;
3606 switch (m_last_broadcast_state) {
3608 case eStateStepping:
3609 // We always suppress multiple runnings with no PUBLIC stop in between.
3610 return_value = false;
3613 // TODO: make this work correctly. For now always report
3614 // run if we aren't running so we don't miss any running events. If I
3615 // run the lldb/test/thread/a.out file and break at main.cpp:58, run
3616 // and hit the breakpoints on multiple threads, then somehow during the
3617 // stepping over of all breakpoints no run gets reported.
3619 // This is a transition from stop to run.
3620 switch (m_thread_list.ShouldReportRun(event_ptr)) {
3622 case eVoteNoOpinion:
3623 return_value = true;
3626 return_value = false;
3635 case eStateSuspended:
3636 // We've stopped. First see if we're going to restart the target. If we
3637 // are going to stop, then we always broadcast the event. If we aren't
3638 // going to stop, let the thread plans decide if we're going to report this
3639 // event. If no thread has an opinion, we don't report it.
3641 m_stdio_communication.SynchronizeWithReadThread();
3642 RefreshStateAfterStop();
3643 if (ProcessEventData::GetInterruptedFromEvent(event_ptr)) {
3645 log->Printf("Process::ShouldBroadcastEvent (%p) stopped due to an "
3646 "interrupt, state: %s",
3647 static_cast<void *>(event_ptr), StateAsCString(state));
3648 // Even though we know we are going to stop, we should let the threads
3649 // have a look at the stop, so they can properly set their state.
3650 m_thread_list.ShouldStop(event_ptr);
3651 return_value = true;
3653 bool was_restarted = ProcessEventData::GetRestartedFromEvent(event_ptr);
3654 bool should_resume = false;
3656 // It makes no sense to ask "ShouldStop" if we've already been
3657 // restarted... Asking the thread list is also not likely to go well,
3658 // since we are running again. So in that case just report the event.
3661 should_resume = !m_thread_list.ShouldStop(event_ptr);
3663 if (was_restarted || should_resume || m_resume_requested) {
3664 Vote stop_vote = m_thread_list.ShouldReportStop(event_ptr);
3666 log->Printf("Process::ShouldBroadcastEvent: should_resume: %i state: "
3667 "%s was_restarted: %i stop_vote: %d.",
3668 should_resume, StateAsCString(state), was_restarted,
3671 switch (stop_vote) {
3673 return_value = true;
3675 case eVoteNoOpinion:
3677 return_value = false;
3681 if (!was_restarted) {
3683 log->Printf("Process::ShouldBroadcastEvent (%p) Restarting process "
3685 static_cast<void *>(event_ptr), StateAsCString(state));
3686 ProcessEventData::SetRestartedInEvent(event_ptr, true);
3690 return_value = true;
3691 SynchronouslyNotifyStateChanged(state);
3697 // Forcing the next event delivery is a one shot deal. So reset it here.
3698 m_force_next_event_delivery = false;
3700 // We do some coalescing of events (for instance two consecutive running
3701 // events get coalesced.) But we only coalesce against events we actually
3702 // broadcast. So we use m_last_broadcast_state to track that. NB - you
3703 // can't use "m_public_state.GetValue()" for that purpose, as was originally
3704 // done, because the PublicState reflects the last event pulled off the
3705 // queue, and there may be several events stacked up on the queue unserviced.
3706 // So the PublicState may not reflect the last broadcasted event yet.
3707 // m_last_broadcast_state gets updated here.
3710 m_last_broadcast_state = state;
3713 log->Printf("Process::ShouldBroadcastEvent (%p) => new state: %s, last "
3714 "broadcast state: %s - %s",
3715 static_cast<void *>(event_ptr), StateAsCString(state),
3716 StateAsCString(m_last_broadcast_state),
3717 return_value ? "YES" : "NO");
3718 return return_value;
3721 bool Process::StartPrivateStateThread(bool is_secondary_thread) {
3722 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS));
3724 bool already_running = PrivateStateThreadIsValid();
3726 log->Printf("Process::%s()%s ", __FUNCTION__,
3727 already_running ? " already running"
3728 : " starting private state thread");
3730 if (!is_secondary_thread && already_running)
3733 // Create a thread that watches our internal state and controls which events
3734 // make it to clients (into the DCProcess event queue).
3735 char thread_name[1024];
3736 uint32_t max_len = llvm::get_max_thread_name_length();
3737 if (max_len > 0 && max_len <= 30) {
3738 // On platforms with abbreviated thread name lengths, choose thread names
3739 // that fit within the limit.
3740 if (already_running)
3741 snprintf(thread_name, sizeof(thread_name), "intern-state-OV");
3743 snprintf(thread_name, sizeof(thread_name), "intern-state");
3745 if (already_running)
3746 snprintf(thread_name, sizeof(thread_name),
3747 "<lldb.process.internal-state-override(pid=%" PRIu64 ")>",
3750 snprintf(thread_name, sizeof(thread_name),
3751 "<lldb.process.internal-state(pid=%" PRIu64 ")>", GetID());
3754 // Create the private state thread, and start it running.
3755 PrivateStateThreadArgs *args_ptr =
3756 new PrivateStateThreadArgs(this, is_secondary_thread);
3757 m_private_state_thread =
3758 ThreadLauncher::LaunchThread(thread_name, Process::PrivateStateThread,
3759 (void *)args_ptr, nullptr, 8 * 1024 * 1024);
3760 if (m_private_state_thread.IsJoinable()) {
3761 ResumePrivateStateThread();
3767 void Process::PausePrivateStateThread() {
3768 ControlPrivateStateThread(eBroadcastInternalStateControlPause);
3771 void Process::ResumePrivateStateThread() {
3772 ControlPrivateStateThread(eBroadcastInternalStateControlResume);
3775 void Process::StopPrivateStateThread() {
3776 if (m_private_state_thread.IsJoinable())
3777 ControlPrivateStateThread(eBroadcastInternalStateControlStop);
3779 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
3782 "Went to stop the private state thread, but it was already invalid.");
3786 void Process::ControlPrivateStateThread(uint32_t signal) {
3787 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
3789 assert(signal == eBroadcastInternalStateControlStop ||
3790 signal == eBroadcastInternalStateControlPause ||
3791 signal == eBroadcastInternalStateControlResume);
3794 log->Printf("Process::%s (signal = %d)", __FUNCTION__, signal);
3796 // Signal the private state thread
3797 if (m_private_state_thread.IsJoinable()) {
3798 // Broadcast the event.
3799 // It is important to do this outside of the if below, because it's
3800 // possible that the thread state is invalid but that the thread is waiting
3801 // on a control event instead of simply being on its way out (this should
3802 // not happen, but it apparently can).
3804 log->Printf("Sending control event of type: %d.", signal);
3805 std::shared_ptr<EventDataReceipt> event_receipt_sp(new EventDataReceipt());
3806 m_private_state_control_broadcaster.BroadcastEvent(signal,
3809 // Wait for the event receipt or for the private state thread to exit
3810 bool receipt_received = false;
3811 if (PrivateStateThreadIsValid()) {
3812 while (!receipt_received) {
3813 // Check for a receipt for 2 seconds and then check if the private
3814 // state thread is still around.
3816 event_receipt_sp->WaitForEventReceived(std::chrono::seconds(2));
3817 if (!receipt_received) {
3818 // Check if the private state thread is still around. If it isn't
3819 // then we are done waiting
3820 if (!PrivateStateThreadIsValid())
3821 break; // Private state thread exited or is exiting, we are done
3826 if (signal == eBroadcastInternalStateControlStop) {
3827 thread_result_t result = NULL;
3828 m_private_state_thread.Join(&result);
3829 m_private_state_thread.Reset();
3834 "Private state thread already dead, no need to signal it to stop.");
3838 void Process::SendAsyncInterrupt() {
3839 if (PrivateStateThreadIsValid())
3840 m_private_state_broadcaster.BroadcastEvent(Process::eBroadcastBitInterrupt,
3843 BroadcastEvent(Process::eBroadcastBitInterrupt, nullptr);
3846 void Process::HandlePrivateEvent(EventSP &event_sp) {
3847 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
3848 m_resume_requested = false;
3850 const StateType new_state =
3851 Process::ProcessEventData::GetStateFromEvent(event_sp.get());
3853 // First check to see if anybody wants a shot at this event:
3854 if (m_next_event_action_ap) {
3855 NextEventAction::EventActionResult action_result =
3856 m_next_event_action_ap->PerformAction(event_sp);
3858 log->Printf("Ran next event action, result was %d.", action_result);
3860 switch (action_result) {
3861 case NextEventAction::eEventActionSuccess:
3862 SetNextEventAction(nullptr);
3865 case NextEventAction::eEventActionRetry:
3868 case NextEventAction::eEventActionExit:
3869 // Handle Exiting Here. If we already got an exited event, we should
3870 // just propagate it. Otherwise, swallow this event, and set our state
3871 // to exit so the next event will kill us.
3872 if (new_state != eStateExited) {
3873 // FIXME: should cons up an exited event, and discard this one.
3874 SetExitStatus(0, m_next_event_action_ap->GetExitString());
3875 SetNextEventAction(nullptr);
3878 SetNextEventAction(nullptr);
3883 // See if we should broadcast this state to external clients?
3884 const bool should_broadcast = ShouldBroadcastEvent(event_sp.get());
3886 if (should_broadcast) {
3887 const bool is_hijacked = IsHijackedForEvent(eBroadcastBitStateChanged);
3889 log->Printf("Process::%s (pid = %" PRIu64
3890 ") broadcasting new state %s (old state %s) to %s",
3891 __FUNCTION__, GetID(), StateAsCString(new_state),
3892 StateAsCString(GetState()),
3893 is_hijacked ? "hijacked" : "public");
3895 Process::ProcessEventData::SetUpdateStateOnRemoval(event_sp.get());
3896 if (StateIsRunningState(new_state)) {
3897 // Only push the input handler if we aren't fowarding events, as this
3898 // means the curses GUI is in use... Or don't push it if we are launching
3899 // since it will come up stopped.
3900 if (!GetTarget().GetDebugger().IsForwardingEvents() &&
3901 new_state != eStateLaunching && new_state != eStateAttaching) {
3902 PushProcessIOHandler();
3903 m_iohandler_sync.SetValue(m_iohandler_sync.GetValue() + 1,
3906 log->Printf("Process::%s updated m_iohandler_sync to %d",
3907 __FUNCTION__, m_iohandler_sync.GetValue());
3909 } else if (StateIsStoppedState(new_state, false)) {
3910 if (!Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) {
3911 // If the lldb_private::Debugger is handling the events, we don't want
3912 // to pop the process IOHandler here, we want to do it when we receive
3913 // the stopped event so we can carefully control when the process
3914 // IOHandler is popped because when we stop we want to display some
3915 // text stating how and why we stopped, then maybe some
3916 // process/thread/frame info, and then we want the "(lldb) " prompt to
3917 // show up. If we pop the process IOHandler here, then we will cause
3918 // the command interpreter to become the top IOHandler after the
3919 // process pops off and it will update its prompt right away... See the
3920 // Debugger.cpp file where it calls the function as
3921 // "process_sp->PopProcessIOHandler()" to see where I am talking about.
3922 // Otherwise we end up getting overlapping "(lldb) " prompts and
3925 // If we aren't handling the events in the debugger (which is indicated
3926 // by "m_target.GetDebugger().IsHandlingEvents()" returning false) or
3927 // we are hijacked, then we always pop the process IO handler manually.
3928 // Hijacking happens when the internal process state thread is running
3929 // thread plans, or when commands want to run in synchronous mode and
3930 // they call "process->WaitForProcessToStop()". An example of something
3931 // that will hijack the events is a simple expression:
3933 // (lldb) expr (int)puts("hello")
3935 // This will cause the internal process state thread to resume and halt
3936 // the process (and _it_ will hijack the eBroadcastBitStateChanged
3937 // events) and we do need the IO handler to be pushed and popped
3940 if (is_hijacked || !GetTarget().GetDebugger().IsHandlingEvents())
3941 PopProcessIOHandler();
3945 BroadcastEvent(event_sp);
3949 "Process::%s (pid = %" PRIu64
3950 ") suppressing state %s (old state %s): should_broadcast == false",
3951 __FUNCTION__, GetID(), StateAsCString(new_state),
3952 StateAsCString(GetState()));
3957 Status Process::HaltPrivate() {
3959 Status error(WillHalt());
3963 // Ask the process subclass to actually halt our process
3965 error = DoHalt(caused_stop);
3971 thread_result_t Process::PrivateStateThread(void *arg) {
3972 std::unique_ptr<PrivateStateThreadArgs> args_up(
3973 static_cast<PrivateStateThreadArgs *>(arg));
3974 thread_result_t result =
3975 args_up->process->RunPrivateStateThread(args_up->is_secondary_thread);
3979 thread_result_t Process::RunPrivateStateThread(bool is_secondary_thread) {
3980 bool control_only = true;
3982 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
3984 log->Printf("Process::%s (arg = %p, pid = %" PRIu64 ") thread starting...",
3985 __FUNCTION__, static_cast<void *>(this), GetID());
3987 bool exit_now = false;
3988 bool interrupt_requested = false;
3991 GetEventsPrivate(event_sp, llvm::None, control_only);
3992 if (event_sp->BroadcasterIs(&m_private_state_control_broadcaster)) {
3994 log->Printf("Process::%s (arg = %p, pid = %" PRIu64
3995 ") got a control event: %d",
3996 __FUNCTION__, static_cast<void *>(this), GetID(),
3997 event_sp->GetType());
3999 switch (event_sp->GetType()) {
4000 case eBroadcastInternalStateControlStop:
4002 break; // doing any internal state management below
4004 case eBroadcastInternalStateControlPause:
4005 control_only = true;
4008 case eBroadcastInternalStateControlResume:
4009 control_only = false;
4014 } else if (event_sp->GetType() == eBroadcastBitInterrupt) {
4015 if (m_public_state.GetValue() == eStateAttaching) {
4017 log->Printf("Process::%s (arg = %p, pid = %" PRIu64
4018 ") woke up with an interrupt while attaching - "
4019 "forwarding interrupt.",
4020 __FUNCTION__, static_cast<void *>(this), GetID());
4021 BroadcastEvent(eBroadcastBitInterrupt, nullptr);
4022 } else if (StateIsRunningState(m_last_broadcast_state)) {
4024 log->Printf("Process::%s (arg = %p, pid = %" PRIu64
4025 ") woke up with an interrupt - Halting.",
4026 __FUNCTION__, static_cast<void *>(this), GetID());
4027 Status error = HaltPrivate();
4028 if (error.Fail() && log)
4029 log->Printf("Process::%s (arg = %p, pid = %" PRIu64
4030 ") failed to halt the process: %s",
4031 __FUNCTION__, static_cast<void *>(this), GetID(),
4033 // Halt should generate a stopped event. Make a note of the fact that
4034 // we were doing the interrupt, so we can set the interrupted flag
4035 // after we receive the event. We deliberately set this to true even if
4036 // HaltPrivate failed, so that we can interrupt on the next natural
4038 interrupt_requested = true;
4040 // This can happen when someone (e.g. Process::Halt) sees that we are
4041 // running and sends an interrupt request, but the process actually
4042 // stops before we receive it. In that case, we can just ignore the
4043 // request. We use m_last_broadcast_state, because the Stopped event
4044 // may not have been popped of the event queue yet, which is when the
4045 // public state gets updated.
4048 "Process::%s ignoring interrupt as we have already stopped.",
4054 const StateType internal_state =
4055 Process::ProcessEventData::GetStateFromEvent(event_sp.get());
4057 if (internal_state != eStateInvalid) {
4058 if (m_clear_thread_plans_on_stop &&
4059 StateIsStoppedState(internal_state, true)) {
4060 m_clear_thread_plans_on_stop = false;
4061 m_thread_list.DiscardThreadPlans();
4064 if (interrupt_requested) {
4065 if (StateIsStoppedState(internal_state, true)) {
4066 // We requested the interrupt, so mark this as such in the stop event
4067 // so clients can tell an interrupted process from a natural stop
4068 ProcessEventData::SetInterruptedInEvent(event_sp.get(), true);
4069 interrupt_requested = false;
4071 log->Printf("Process::%s interrupt_requested, but a non-stopped "
4072 "state '%s' received.",
4073 __FUNCTION__, StateAsCString(internal_state));
4077 HandlePrivateEvent(event_sp);
4080 if (internal_state == eStateInvalid || internal_state == eStateExited ||
4081 internal_state == eStateDetached) {
4083 log->Printf("Process::%s (arg = %p, pid = %" PRIu64
4084 ") about to exit with internal state %s...",
4085 __FUNCTION__, static_cast<void *>(this), GetID(),
4086 StateAsCString(internal_state));
4092 // Verify log is still enabled before attempting to write to it...
4094 log->Printf("Process::%s (arg = %p, pid = %" PRIu64 ") thread exiting...",
4095 __FUNCTION__, static_cast<void *>(this), GetID());
4097 // If we are a secondary thread, then the primary thread we are working for
4098 // will have already acquired the public_run_lock, and isn't done with what
4099 // it was doing yet, so don't try to change it on the way out.
4100 if (!is_secondary_thread)
4101 m_public_run_lock.SetStopped();
4105 //------------------------------------------------------------------
4106 // Process Event Data
4107 //------------------------------------------------------------------
4109 Process::ProcessEventData::ProcessEventData()
4110 : EventData(), m_process_wp(), m_state(eStateInvalid), m_restarted(false),
4111 m_update_state(0), m_interrupted(false) {}
4113 Process::ProcessEventData::ProcessEventData(const ProcessSP &process_sp,
4115 : EventData(), m_process_wp(), m_state(state), m_restarted(false),
4116 m_update_state(0), m_interrupted(false) {
4118 m_process_wp = process_sp;
4121 Process::ProcessEventData::~ProcessEventData() = default;
4123 const ConstString &Process::ProcessEventData::GetFlavorString() {
4124 static ConstString g_flavor("Process::ProcessEventData");
4128 const ConstString &Process::ProcessEventData::GetFlavor() const {
4129 return ProcessEventData::GetFlavorString();
4132 void Process::ProcessEventData::DoOnRemoval(Event *event_ptr) {
4133 ProcessSP process_sp(m_process_wp.lock());
4138 // This function gets called twice for each event, once when the event gets
4139 // pulled off of the private process event queue, and then any number of
4140 // times, first when it gets pulled off of the public event queue, then other
4141 // times when we're pretending that this is where we stopped at the end of
4142 // expression evaluation. m_update_state is used to distinguish these three
4143 // cases; it is 0 when we're just pulling it off for private handling, and >
4144 // 1 for expression evaluation, and we don't want to do the breakpoint
4145 // command handling then.
4146 if (m_update_state != 1)
4149 process_sp->SetPublicState(
4150 m_state, Process::ProcessEventData::GetRestartedFromEvent(event_ptr));
4152 if (m_state == eStateStopped && !m_restarted) {
4153 // Let process subclasses know we are about to do a public stop and do
4154 // anything they might need to in order to speed up register and memory
4156 process_sp->WillPublicStop();
4159 // If this is a halt event, even if the halt stopped with some reason other
4160 // than a plain interrupt (e.g. we had already stopped for a breakpoint when
4161 // the halt request came through) don't do the StopInfo actions, as they may
4162 // end up restarting the process.
4166 // If we're stopped and haven't restarted, then do the StopInfo actions here:
4167 if (m_state == eStateStopped && !m_restarted) {
4168 ThreadList &curr_thread_list = process_sp->GetThreadList();
4169 uint32_t num_threads = curr_thread_list.GetSize();
4172 // The actions might change one of the thread's stop_info's opinions about
4173 // whether we should stop the process, so we need to query that as we go.
4175 // One other complication here, is that we try to catch any case where the
4176 // target has run (except for expressions) and immediately exit, but if we
4177 // get that wrong (which is possible) then the thread list might have
4178 // changed, and that would cause our iteration here to crash. We could
4179 // make a copy of the thread list, but we'd really like to also know if it
4180 // has changed at all, so we make up a vector of the thread ID's and check
4181 // what we get back against this list & bag out if anything differs.
4182 std::vector<uint32_t> thread_index_array(num_threads);
4183 for (idx = 0; idx < num_threads; ++idx)
4184 thread_index_array[idx] =
4185 curr_thread_list.GetThreadAtIndex(idx)->GetIndexID();
4187 // Use this to track whether we should continue from here. We will only
4188 // continue the target running if no thread says we should stop. Of course
4189 // if some thread's PerformAction actually sets the target running, then it
4190 // doesn't matter what the other threads say...
4192 bool still_should_stop = false;
4194 // Sometimes - for instance if we have a bug in the stub we are talking to,
4195 // we stop but no thread has a valid stop reason. In that case we should
4196 // just stop, because we have no way of telling what the right thing to do
4197 // is, and it's better to let the user decide than continue behind their
4200 bool does_anybody_have_an_opinion = false;
4202 for (idx = 0; idx < num_threads; ++idx) {
4203 curr_thread_list = process_sp->GetThreadList();
4204 if (curr_thread_list.GetSize() != num_threads) {
4205 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STEP |
4206 LIBLLDB_LOG_PROCESS));
4209 "Number of threads changed from %u to %u while processing event.",
4210 num_threads, curr_thread_list.GetSize());
4214 lldb::ThreadSP thread_sp = curr_thread_list.GetThreadAtIndex(idx);
4216 if (thread_sp->GetIndexID() != thread_index_array[idx]) {
4217 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STEP |
4218 LIBLLDB_LOG_PROCESS));
4220 log->Printf("The thread at position %u changed from %u to %u while "
4221 "processing event.",
4222 idx, thread_index_array[idx], thread_sp->GetIndexID());
4226 StopInfoSP stop_info_sp = thread_sp->GetStopInfo();
4227 if (stop_info_sp && stop_info_sp->IsValid()) {
4228 does_anybody_have_an_opinion = true;
4229 bool this_thread_wants_to_stop;
4230 if (stop_info_sp->GetOverrideShouldStop()) {
4231 this_thread_wants_to_stop =
4232 stop_info_sp->GetOverriddenShouldStopValue();
4234 stop_info_sp->PerformAction(event_ptr);
4235 // The stop action might restart the target. If it does, then we
4236 // want to mark that in the event so that whoever is receiving it
4237 // will know to wait for the running event and reflect that state
4238 // appropriately. We also need to stop processing actions, since they
4239 // aren't expecting the target to be running.
4241 // FIXME: we might have run.
4242 if (stop_info_sp->HasTargetRunSinceMe()) {
4247 this_thread_wants_to_stop = stop_info_sp->ShouldStop(event_ptr);
4250 if (!still_should_stop)
4251 still_should_stop = this_thread_wants_to_stop;
4255 if (!GetRestarted()) {
4256 if (!still_should_stop && does_anybody_have_an_opinion) {
4257 // We've been asked to continue, so do that here.
4259 // Use the public resume method here, since this is just extending a
4261 process_sp->PrivateResume();
4263 // If we didn't restart, run the Stop Hooks here: They might also
4264 // restart the target, so watch for that.
4265 process_sp->GetTarget().RunStopHooks();
4266 if (process_sp->GetPrivateState() == eStateRunning)
4273 void Process::ProcessEventData::Dump(Stream *s) const {
4274 ProcessSP process_sp(m_process_wp.lock());
4277 s->Printf(" process = %p (pid = %" PRIu64 "), ",
4278 static_cast<void *>(process_sp.get()), process_sp->GetID());
4280 s->PutCString(" process = NULL, ");
4282 s->Printf("state = %s", StateAsCString(GetState()));
4285 const Process::ProcessEventData *
4286 Process::ProcessEventData::GetEventDataFromEvent(const Event *event_ptr) {
4288 const EventData *event_data = event_ptr->GetData();
4290 event_data->GetFlavor() == ProcessEventData::GetFlavorString())
4291 return static_cast<const ProcessEventData *>(event_ptr->GetData());
4297 Process::ProcessEventData::GetProcessFromEvent(const Event *event_ptr) {
4298 ProcessSP process_sp;
4299 const ProcessEventData *data = GetEventDataFromEvent(event_ptr);
4301 process_sp = data->GetProcessSP();
4305 StateType Process::ProcessEventData::GetStateFromEvent(const Event *event_ptr) {
4306 const ProcessEventData *data = GetEventDataFromEvent(event_ptr);
4307 if (data == nullptr)
4308 return eStateInvalid;
4310 return data->GetState();
4313 bool Process::ProcessEventData::GetRestartedFromEvent(const Event *event_ptr) {
4314 const ProcessEventData *data = GetEventDataFromEvent(event_ptr);
4315 if (data == nullptr)
4318 return data->GetRestarted();
4321 void Process::ProcessEventData::SetRestartedInEvent(Event *event_ptr,
4323 ProcessEventData *data =
4324 const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr));
4325 if (data != nullptr)
4326 data->SetRestarted(new_value);
4330 Process::ProcessEventData::GetNumRestartedReasons(const Event *event_ptr) {
4331 ProcessEventData *data =
4332 const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr));
4333 if (data != nullptr)
4334 return data->GetNumRestartedReasons();
4340 Process::ProcessEventData::GetRestartedReasonAtIndex(const Event *event_ptr,
4342 ProcessEventData *data =
4343 const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr));
4344 if (data != nullptr)
4345 return data->GetRestartedReasonAtIndex(idx);
4350 void Process::ProcessEventData::AddRestartedReason(Event *event_ptr,
4351 const char *reason) {
4352 ProcessEventData *data =
4353 const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr));
4354 if (data != nullptr)
4355 data->AddRestartedReason(reason);
4358 bool Process::ProcessEventData::GetInterruptedFromEvent(
4359 const Event *event_ptr) {
4360 const ProcessEventData *data = GetEventDataFromEvent(event_ptr);
4361 if (data == nullptr)
4364 return data->GetInterrupted();
4367 void Process::ProcessEventData::SetInterruptedInEvent(Event *event_ptr,
4369 ProcessEventData *data =
4370 const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr));
4371 if (data != nullptr)
4372 data->SetInterrupted(new_value);
4375 bool Process::ProcessEventData::SetUpdateStateOnRemoval(Event *event_ptr) {
4376 ProcessEventData *data =
4377 const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr));
4379 data->SetUpdateStateOnRemoval();
4385 lldb::TargetSP Process::CalculateTarget() { return m_target_wp.lock(); }
4387 void Process::CalculateExecutionContext(ExecutionContext &exe_ctx) {
4388 exe_ctx.SetTargetPtr(&GetTarget());
4389 exe_ctx.SetProcessPtr(this);
4390 exe_ctx.SetThreadPtr(nullptr);
4391 exe_ctx.SetFramePtr(nullptr);
4395 // Process::ListProcessesMatchingName (const char *name, StringList &matches,
4396 // std::vector<lldb::pid_t> &pids)
4402 // Process::GetArchSpecForExistingProcess (lldb::pid_t pid)
4404 // return Host::GetArchSpecForExistingProcess (pid);
4408 // Process::GetArchSpecForExistingProcess (const char *process_name)
4410 // return Host::GetArchSpecForExistingProcess (process_name);
4413 void Process::AppendSTDOUT(const char *s, size_t len) {
4414 std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex);
4415 m_stdout_data.append(s, len);
4416 BroadcastEventIfUnique(eBroadcastBitSTDOUT,
4417 new ProcessEventData(shared_from_this(), GetState()));
4420 void Process::AppendSTDERR(const char *s, size_t len) {
4421 std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex);
4422 m_stderr_data.append(s, len);
4423 BroadcastEventIfUnique(eBroadcastBitSTDERR,
4424 new ProcessEventData(shared_from_this(), GetState()));
4427 void Process::BroadcastAsyncProfileData(const std::string &one_profile_data) {
4428 std::lock_guard<std::recursive_mutex> guard(m_profile_data_comm_mutex);
4429 m_profile_data.push_back(one_profile_data);
4430 BroadcastEventIfUnique(eBroadcastBitProfileData,
4431 new ProcessEventData(shared_from_this(), GetState()));
4434 void Process::BroadcastStructuredData(const StructuredData::ObjectSP &object_sp,
4435 const StructuredDataPluginSP &plugin_sp) {
4437 eBroadcastBitStructuredData,
4438 new EventDataStructuredData(shared_from_this(), object_sp, plugin_sp));
4441 StructuredDataPluginSP
4442 Process::GetStructuredDataPlugin(const ConstString &type_name) const {
4443 auto find_it = m_structured_data_plugin_map.find(type_name);
4444 if (find_it != m_structured_data_plugin_map.end())
4445 return find_it->second;
4447 return StructuredDataPluginSP();
4450 size_t Process::GetAsyncProfileData(char *buf, size_t buf_size, Status &error) {
4451 std::lock_guard<std::recursive_mutex> guard(m_profile_data_comm_mutex);
4452 if (m_profile_data.empty())
4455 std::string &one_profile_data = m_profile_data.front();
4456 size_t bytes_available = one_profile_data.size();
4457 if (bytes_available > 0) {
4458 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
4460 log->Printf("Process::GetProfileData (buf = %p, size = %" PRIu64 ")",
4461 static_cast<void *>(buf), static_cast<uint64_t>(buf_size));
4462 if (bytes_available > buf_size) {
4463 memcpy(buf, one_profile_data.c_str(), buf_size);
4464 one_profile_data.erase(0, buf_size);
4465 bytes_available = buf_size;
4467 memcpy(buf, one_profile_data.c_str(), bytes_available);
4468 m_profile_data.erase(m_profile_data.begin());
4471 return bytes_available;
4474 //------------------------------------------------------------------
4476 //------------------------------------------------------------------
4478 size_t Process::GetSTDOUT(char *buf, size_t buf_size, Status &error) {
4479 std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex);
4480 size_t bytes_available = m_stdout_data.size();
4481 if (bytes_available > 0) {
4482 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
4484 log->Printf("Process::GetSTDOUT (buf = %p, size = %" PRIu64 ")",
4485 static_cast<void *>(buf), static_cast<uint64_t>(buf_size));
4486 if (bytes_available > buf_size) {
4487 memcpy(buf, m_stdout_data.c_str(), buf_size);
4488 m_stdout_data.erase(0, buf_size);
4489 bytes_available = buf_size;
4491 memcpy(buf, m_stdout_data.c_str(), bytes_available);
4492 m_stdout_data.clear();
4495 return bytes_available;
4498 size_t Process::GetSTDERR(char *buf, size_t buf_size, Status &error) {
4499 std::lock_guard<std::recursive_mutex> gaurd(m_stdio_communication_mutex);
4500 size_t bytes_available = m_stderr_data.size();
4501 if (bytes_available > 0) {
4502 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
4504 log->Printf("Process::GetSTDERR (buf = %p, size = %" PRIu64 ")",
4505 static_cast<void *>(buf), static_cast<uint64_t>(buf_size));
4506 if (bytes_available > buf_size) {
4507 memcpy(buf, m_stderr_data.c_str(), buf_size);
4508 m_stderr_data.erase(0, buf_size);
4509 bytes_available = buf_size;
4511 memcpy(buf, m_stderr_data.c_str(), bytes_available);
4512 m_stderr_data.clear();
4515 return bytes_available;
4518 void Process::STDIOReadThreadBytesReceived(void *baton, const void *src,
4520 Process *process = (Process *)baton;
4521 process->AppendSTDOUT(static_cast<const char *>(src), src_len);
4524 class IOHandlerProcessSTDIO : public IOHandler {
4526 IOHandlerProcessSTDIO(Process *process, int write_fd)
4527 : IOHandler(process->GetTarget().GetDebugger(),
4528 IOHandler::Type::ProcessIO),
4529 m_process(process), m_write_file(write_fd, false) {
4530 m_pipe.CreateNew(false);
4531 m_read_file.SetDescriptor(GetInputFD(), false);
4534 ~IOHandlerProcessSTDIO() override = default;
4536 // Each IOHandler gets to run until it is done. It should read data from the
4537 // "in" and place output into "out" and "err and return when done.
4538 void Run() override {
4539 if (!m_read_file.IsValid() || !m_write_file.IsValid() ||
4540 !m_pipe.CanRead() || !m_pipe.CanWrite()) {
4546 const int read_fd = m_read_file.GetDescriptor();
4547 TerminalState terminal_state;
4548 terminal_state.Save(read_fd, false);
4549 Terminal terminal(read_fd);
4550 terminal.SetCanonical(false);
4551 terminal.SetEcho(false);
4552 // FD_ZERO, FD_SET are not supported on windows
4554 const int pipe_read_fd = m_pipe.GetReadFileDescriptor();
4555 m_is_running = true;
4556 while (!GetIsDone()) {
4557 SelectHelper select_helper;
4558 select_helper.FDSetRead(read_fd);
4559 select_helper.FDSetRead(pipe_read_fd);
4560 Status error = select_helper.Select();
4567 if (select_helper.FDIsSetRead(read_fd)) {
4569 if (m_read_file.Read(&ch, n).Success() && n == 1) {
4570 if (m_write_file.Write(&ch, n).Fail() || n != 1)
4575 if (select_helper.FDIsSetRead(pipe_read_fd)) {
4577 // Consume the interrupt byte
4578 Status error = m_pipe.Read(&ch, 1, bytes_read);
4579 if (error.Success()) {
4585 if (StateIsRunningState(m_process->GetState()))
4586 m_process->SendAsyncInterrupt();
4593 m_is_running = false;
4595 terminal_state.Restore();
4598 void Cancel() override {
4600 // Only write to our pipe to cancel if we are in
4601 // IOHandlerProcessSTDIO::Run(). We can end up with a python command that
4602 // is being run from the command interpreter:
4604 // (lldb) step_process_thousands_of_times
4606 // In this case the command interpreter will be in the middle of handling
4607 // the command and if the process pushes and pops the IOHandler thousands
4608 // of times, we can end up writing to m_pipe without ever consuming the
4609 // bytes from the pipe in IOHandlerProcessSTDIO::Run() and end up
4610 // deadlocking when the pipe gets fed up and blocks until data is consumed.
4612 char ch = 'q'; // Send 'q' for quit
4613 size_t bytes_written = 0;
4614 m_pipe.Write(&ch, 1, bytes_written);
4618 bool Interrupt() override {
4619 // Do only things that are safe to do in an interrupt context (like in a
4620 // SIGINT handler), like write 1 byte to a file descriptor. This will
4621 // interrupt the IOHandlerProcessSTDIO::Run() and we can look at the byte
4622 // that was written to the pipe and then call
4623 // m_process->SendAsyncInterrupt() from a much safer location in code.
4625 char ch = 'i'; // Send 'i' for interrupt
4626 size_t bytes_written = 0;
4627 Status result = m_pipe.Write(&ch, 1, bytes_written);
4628 return result.Success();
4630 // This IOHandler might be pushed on the stack, but not being run
4631 // currently so do the right thing if we aren't actively watching for
4632 // STDIN by sending the interrupt to the process. Otherwise the write to
4633 // the pipe above would do nothing. This can happen when the command
4634 // interpreter is running and gets a "expression ...". It will be on the
4635 // IOHandler thread and sending the input is complete to the delegate
4636 // which will cause the expression to run, which will push the process IO
4637 // handler, but not run it.
4639 if (StateIsRunningState(m_process->GetState())) {
4640 m_process->SendAsyncInterrupt();
4647 void GotEOF() override {}
4651 File m_read_file; // Read from this file (usually actual STDIN for LLDB
4652 File m_write_file; // Write to this file (usually the master pty for getting
4655 std::atomic<bool> m_is_running{false};
4658 void Process::SetSTDIOFileDescriptor(int fd) {
4659 // First set up the Read Thread for reading/handling process I/O
4661 std::unique_ptr<ConnectionFileDescriptor> conn_ap(
4662 new ConnectionFileDescriptor(fd, true));
4665 m_stdio_communication.SetConnection(conn_ap.release());
4666 if (m_stdio_communication.IsConnected()) {
4667 m_stdio_communication.SetReadThreadBytesReceivedCallback(
4668 STDIOReadThreadBytesReceived, this);
4669 m_stdio_communication.StartReadThread();
4671 // Now read thread is set up, set up input reader.
4673 if (!m_process_input_reader)
4674 m_process_input_reader.reset(new IOHandlerProcessSTDIO(this, fd));
4679 bool Process::ProcessIOHandlerIsActive() {
4680 IOHandlerSP io_handler_sp(m_process_input_reader);
4682 return GetTarget().GetDebugger().IsTopIOHandler(io_handler_sp);
4685 bool Process::PushProcessIOHandler() {
4686 IOHandlerSP io_handler_sp(m_process_input_reader);
4687 if (io_handler_sp) {
4688 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
4690 log->Printf("Process::%s pushing IO handler", __FUNCTION__);
4692 io_handler_sp->SetIsDone(false);
4693 // If we evaluate an utility function, then we don't cancel the current
4694 // IOHandler. Our IOHandler is non-interactive and shouldn't disturb the
4695 // existing IOHandler that potentially provides the user interface (e.g.
4696 // the IOHandler for Editline).
4697 bool cancel_top_handler = !m_mod_id.IsRunningUtilityFunction();
4698 GetTarget().GetDebugger().PushIOHandler(io_handler_sp, cancel_top_handler);
4704 bool Process::PopProcessIOHandler() {
4705 IOHandlerSP io_handler_sp(m_process_input_reader);
4707 return GetTarget().GetDebugger().PopIOHandler(io_handler_sp);
4711 // The process needs to know about installed plug-ins
4712 void Process::SettingsInitialize() { Thread::SettingsInitialize(); }
4714 void Process::SettingsTerminate() { Thread::SettingsTerminate(); }
4717 // RestorePlanState is used to record the "is private", "is master" and "okay
4718 // to discard" fields of the plan we are running, and reset it on Clean or on
4719 // destruction. It will only reset the state once, so you can call Clean and
4720 // then monkey with the state and it won't get reset on you again.
4722 class RestorePlanState {
4724 RestorePlanState(lldb::ThreadPlanSP thread_plan_sp)
4725 : m_thread_plan_sp(thread_plan_sp), m_already_reset(false) {
4726 if (m_thread_plan_sp) {
4727 m_private = m_thread_plan_sp->GetPrivate();
4728 m_is_master = m_thread_plan_sp->IsMasterPlan();
4729 m_okay_to_discard = m_thread_plan_sp->OkayToDiscard();
4733 ~RestorePlanState() { Clean(); }
4736 if (!m_already_reset && m_thread_plan_sp) {
4737 m_already_reset = true;
4738 m_thread_plan_sp->SetPrivate(m_private);
4739 m_thread_plan_sp->SetIsMasterPlan(m_is_master);
4740 m_thread_plan_sp->SetOkayToDiscard(m_okay_to_discard);
4745 lldb::ThreadPlanSP m_thread_plan_sp;
4746 bool m_already_reset;
4749 bool m_okay_to_discard;
4751 } // anonymous namespace
4754 GetOneThreadExpressionTimeout(const EvaluateExpressionOptions &options) {
4755 const milliseconds default_one_thread_timeout(250);
4757 // If the overall wait is forever, then we don't need to worry about it.
4758 if (!options.GetTimeout()) {
4759 return options.GetOneThreadTimeout() ? *options.GetOneThreadTimeout()
4760 : default_one_thread_timeout;
4763 // If the one thread timeout is set, use it.
4764 if (options.GetOneThreadTimeout())
4765 return *options.GetOneThreadTimeout();
4767 // Otherwise use half the total timeout, bounded by the
4768 // default_one_thread_timeout.
4769 return std::min<microseconds>(default_one_thread_timeout,
4770 *options.GetTimeout() / 2);
4773 static Timeout<std::micro>
4774 GetExpressionTimeout(const EvaluateExpressionOptions &options,
4775 bool before_first_timeout) {
4776 // If we are going to run all threads the whole time, or if we are only going
4777 // to run one thread, we can just return the overall timeout.
4778 if (!options.GetStopOthers() || !options.GetTryAllThreads())
4779 return options.GetTimeout();
4781 if (before_first_timeout)
4782 return GetOneThreadExpressionTimeout(options);
4784 if (!options.GetTimeout())
4787 return *options.GetTimeout() - GetOneThreadExpressionTimeout(options);
4790 static llvm::Optional<ExpressionResults>
4791 HandleStoppedEvent(Thread &thread, const ThreadPlanSP &thread_plan_sp,
4792 RestorePlanState &restorer, const EventSP &event_sp,
4793 EventSP &event_to_broadcast_sp,
4794 const EvaluateExpressionOptions &options, bool handle_interrupts) {
4795 Log *log = GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS);
4797 ThreadPlanSP plan = thread.GetCompletedPlan();
4798 if (plan == thread_plan_sp && plan->PlanSucceeded()) {
4799 LLDB_LOG(log, "execution completed successfully");
4801 // Restore the plan state so it will get reported as intended when we are
4804 return eExpressionCompleted;
4807 StopInfoSP stop_info_sp = thread.GetStopInfo();
4808 if (stop_info_sp && stop_info_sp->GetStopReason() == eStopReasonBreakpoint &&
4809 stop_info_sp->ShouldNotify(event_sp.get())) {
4810 LLDB_LOG(log, "stopped for breakpoint: {0}.", stop_info_sp->GetDescription());
4811 if (!options.DoesIgnoreBreakpoints()) {
4812 // Restore the plan state and then force Private to false. We are going
4813 // to stop because of this plan so we need it to become a public plan or
4814 // it won't report correctly when we continue to its termination later
4817 thread_plan_sp->SetPrivate(false);
4818 event_to_broadcast_sp = event_sp;
4820 return eExpressionHitBreakpoint;
4823 if (!handle_interrupts &&
4824 Process::ProcessEventData::GetInterruptedFromEvent(event_sp.get()))
4827 LLDB_LOG(log, "thread plan did not successfully complete");
4828 if (!options.DoesUnwindOnError())
4829 event_to_broadcast_sp = event_sp;
4830 return eExpressionInterrupted;
4834 Process::RunThreadPlan(ExecutionContext &exe_ctx,
4835 lldb::ThreadPlanSP &thread_plan_sp,
4836 const EvaluateExpressionOptions &options,
4837 DiagnosticManager &diagnostic_manager) {
4838 ExpressionResults return_value = eExpressionSetupError;
4840 std::lock_guard<std::mutex> run_thread_plan_locker(m_run_thread_plan_lock);
4842 if (!thread_plan_sp) {
4843 diagnostic_manager.PutString(
4844 eDiagnosticSeverityError,
4845 "RunThreadPlan called with empty thread plan.");
4846 return eExpressionSetupError;
4849 if (!thread_plan_sp->ValidatePlan(nullptr)) {
4850 diagnostic_manager.PutString(
4851 eDiagnosticSeverityError,
4852 "RunThreadPlan called with an invalid thread plan.");
4853 return eExpressionSetupError;
4856 if (exe_ctx.GetProcessPtr() != this) {
4857 diagnostic_manager.PutString(eDiagnosticSeverityError,
4858 "RunThreadPlan called on wrong process.");
4859 return eExpressionSetupError;
4862 Thread *thread = exe_ctx.GetThreadPtr();
4863 if (thread == nullptr) {
4864 diagnostic_manager.PutString(eDiagnosticSeverityError,
4865 "RunThreadPlan called with invalid thread.");
4866 return eExpressionSetupError;
4869 // We need to change some of the thread plan attributes for the thread plan
4870 // runner. This will restore them when we are done:
4872 RestorePlanState thread_plan_restorer(thread_plan_sp);
4874 // We rely on the thread plan we are running returning "PlanCompleted" if
4875 // when it successfully completes. For that to be true the plan can't be
4876 // private - since private plans suppress themselves in the GetCompletedPlan
4879 thread_plan_sp->SetPrivate(false);
4881 // The plans run with RunThreadPlan also need to be terminal master plans or
4882 // when they are done we will end up asking the plan above us whether we
4883 // should stop, which may give the wrong answer.
4885 thread_plan_sp->SetIsMasterPlan(true);
4886 thread_plan_sp->SetOkayToDiscard(false);
4888 // If we are running some utility expression for LLDB, we now have to mark
4889 // this in the ProcesModID of this process. This RAII takes care of marking
4890 // and reverting the mark it once we are done running the expression.
4891 UtilityFunctionScope util_scope(options.IsForUtilityExpr() ? this : nullptr);
4893 if (m_private_state.GetValue() != eStateStopped) {
4894 diagnostic_manager.PutString(
4895 eDiagnosticSeverityError,
4896 "RunThreadPlan called while the private state was not stopped.");
4897 return eExpressionSetupError;
4900 // Save the thread & frame from the exe_ctx for restoration after we run
4901 const uint32_t thread_idx_id = thread->GetIndexID();
4902 StackFrameSP selected_frame_sp = thread->GetSelectedFrame();
4903 if (!selected_frame_sp) {
4904 thread->SetSelectedFrame(nullptr);
4905 selected_frame_sp = thread->GetSelectedFrame();
4906 if (!selected_frame_sp) {
4907 diagnostic_manager.Printf(
4908 eDiagnosticSeverityError,
4909 "RunThreadPlan called without a selected frame on thread %d",
4911 return eExpressionSetupError;
4915 // Make sure the timeout values make sense. The one thread timeout needs to
4916 // be smaller than the overall timeout.
4917 if (options.GetOneThreadTimeout() && options.GetTimeout() &&
4918 *options.GetTimeout() < *options.GetOneThreadTimeout()) {
4919 diagnostic_manager.PutString(eDiagnosticSeverityError,
4920 "RunThreadPlan called with one thread "
4921 "timeout greater than total timeout");
4922 return eExpressionSetupError;
4925 StackID ctx_frame_id = selected_frame_sp->GetStackID();
4927 // N.B. Running the target may unset the currently selected thread and frame.
4928 // We don't want to do that either, so we should arrange to reset them as
4931 lldb::ThreadSP selected_thread_sp = GetThreadList().GetSelectedThread();
4933 uint32_t selected_tid;
4934 StackID selected_stack_id;
4935 if (selected_thread_sp) {
4936 selected_tid = selected_thread_sp->GetIndexID();
4937 selected_stack_id = selected_thread_sp->GetSelectedFrame()->GetStackID();
4939 selected_tid = LLDB_INVALID_THREAD_ID;
4942 HostThread backup_private_state_thread;
4943 lldb::StateType old_state = eStateInvalid;
4944 lldb::ThreadPlanSP stopper_base_plan_sp;
4946 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STEP |
4947 LIBLLDB_LOG_PROCESS));
4948 if (m_private_state_thread.EqualsThread(Host::GetCurrentThread())) {
4949 // Yikes, we are running on the private state thread! So we can't wait for
4950 // public events on this thread, since we are the thread that is generating
4951 // public events. The simplest thing to do is to spin up a temporary thread
4952 // to handle private state thread events while we are fielding public
4955 log->Printf("Running thread plan on private state thread, spinning up "
4956 "another state thread to handle the events.");
4958 backup_private_state_thread = m_private_state_thread;
4960 // One other bit of business: we want to run just this thread plan and
4961 // anything it pushes, and then stop, returning control here. But in the
4962 // normal course of things, the plan above us on the stack would be given a
4963 // shot at the stop event before deciding to stop, and we don't want that.
4964 // So we insert a "stopper" base plan on the stack before the plan we want
4965 // to run. Since base plans always stop and return control to the user,
4966 // that will do just what we want.
4967 stopper_base_plan_sp.reset(new ThreadPlanBase(*thread));
4968 thread->QueueThreadPlan(stopper_base_plan_sp, false);
4969 // Have to make sure our public state is stopped, since otherwise the
4970 // reporting logic below doesn't work correctly.
4971 old_state = m_public_state.GetValue();
4972 m_public_state.SetValueNoLock(eStateStopped);
4974 // Now spin up the private state thread:
4975 StartPrivateStateThread(true);
4978 thread->QueueThreadPlan(
4979 thread_plan_sp, false); // This used to pass "true" does that make sense?
4981 if (options.GetDebug()) {
4982 // In this case, we aren't actually going to run, we just want to stop
4983 // right away. Flush this thread so we will refetch the stacks and show the
4984 // correct backtrace.
4985 // FIXME: To make this prettier we should invent some stop reason for this,
4987 // is only cosmetic, and this functionality is only of use to lldb
4988 // developers who can live with not pretty...
4990 return eExpressionStoppedForDebug;
4993 ListenerSP listener_sp(
4994 Listener::MakeListener("lldb.process.listener.run-thread-plan"));
4996 lldb::EventSP event_to_broadcast_sp;
4999 // This process event hijacker Hijacks the Public events and its destructor
5000 // makes sure that the process events get restored on exit to the function.
5002 // If the event needs to propagate beyond the hijacker (e.g., the process
5003 // exits during execution), then the event is put into
5004 // event_to_broadcast_sp for rebroadcasting.
5006 ProcessEventHijacker run_thread_plan_hijacker(*this, listener_sp);
5010 thread_plan_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose);
5011 log->Printf("Process::RunThreadPlan(): Resuming thread %u - 0x%4.4" PRIx64
5012 " to run thread plan \"%s\".",
5013 thread->GetIndexID(), thread->GetID(), s.GetData());
5017 lldb::EventSP event_sp;
5018 lldb::StateType stop_state = lldb::eStateInvalid;
5020 bool before_first_timeout = true; // This is set to false the first time
5021 // that we have to halt the target.
5022 bool do_resume = true;
5023 bool handle_running_event = true;
5025 // This is just for accounting:
5026 uint32_t num_resumes = 0;
5028 // If we are going to run all threads the whole time, or if we are only
5029 // going to run one thread, then we don't need the first timeout. So we
5030 // pretend we are after the first timeout already.
5031 if (!options.GetStopOthers() || !options.GetTryAllThreads())
5032 before_first_timeout = false;
5035 log->Printf("Stop others: %u, try all: %u, before_first: %u.\n",
5036 options.GetStopOthers(), options.GetTryAllThreads(),
5037 before_first_timeout);
5039 // This isn't going to work if there are unfetched events on the queue. Are
5040 // there cases where we might want to run the remaining events here, and
5041 // then try to call the function? That's probably being too tricky for our
5044 Event *other_events = listener_sp->PeekAtNextEvent();
5045 if (other_events != nullptr) {
5046 diagnostic_manager.PutString(
5047 eDiagnosticSeverityError,
5048 "RunThreadPlan called with pending events on the queue.");
5049 return eExpressionSetupError;
5052 // We also need to make sure that the next event is delivered. We might be
5053 // calling a function as part of a thread plan, in which case the last
5054 // delivered event could be the running event, and we don't want event
5055 // coalescing to cause us to lose OUR running event...
5056 ForceNextEventDelivery();
5058 // This while loop must exit out the bottom, there's cleanup that we need to do
5059 // when we are done. So don't call return anywhere within it.
5061 #ifdef LLDB_RUN_THREAD_HALT_WITH_EVENT
5062 // It's pretty much impossible to write test cases for things like: One
5063 // thread timeout expires, I go to halt, but the process already stopped on
5064 // the function call stop breakpoint. Turning on this define will make us
5065 // not fetch the first event till after the halt. So if you run a quick
5066 // function, it will have completed, and the completion event will be
5067 // waiting, when you interrupt for halt. The expression evaluation should
5069 bool miss_first_event = true;
5072 // We usually want to resume the process if we get to the top of the
5073 // loop. The only exception is if we get two running events with no
5074 // intervening stop, which can happen, we will just wait for then next
5077 log->Printf("Top of while loop: do_resume: %i handle_running_event: %i "
5078 "before_first_timeout: %i.",
5079 do_resume, handle_running_event, before_first_timeout);
5081 if (do_resume || handle_running_event) {
5082 // Do the initial resume and wait for the running event before going
5087 Status resume_error = PrivateResume();
5088 if (!resume_error.Success()) {
5089 diagnostic_manager.Printf(
5090 eDiagnosticSeverityError,
5091 "couldn't resume inferior the %d time: \"%s\".", num_resumes,
5092 resume_error.AsCString());
5093 return_value = eExpressionSetupError;
5099 listener_sp->GetEvent(event_sp, std::chrono::milliseconds(500));
5102 log->Printf("Process::RunThreadPlan(): didn't get any event after "
5103 "resume %" PRIu32 ", exiting.",
5106 diagnostic_manager.Printf(eDiagnosticSeverityError,
5107 "didn't get any event after resume %" PRIu32
5110 return_value = eExpressionSetupError;
5115 Process::ProcessEventData::GetStateFromEvent(event_sp.get());
5117 if (stop_state != eStateRunning) {
5118 bool restarted = false;
5120 if (stop_state == eStateStopped) {
5121 restarted = Process::ProcessEventData::GetRestartedFromEvent(
5125 "Process::RunThreadPlan(): didn't get running event after "
5126 "resume %d, got %s instead (restarted: %i, do_resume: %i, "
5127 "handle_running_event: %i).",
5128 num_resumes, StateAsCString(stop_state), restarted, do_resume,
5129 handle_running_event);
5133 // This is probably an overabundance of caution, I don't think I
5134 // should ever get a stopped & restarted event here. But if I do,
5135 // the best thing is to Halt and then get out of here.
5136 const bool clear_thread_plans = false;
5137 const bool use_run_lock = false;
5138 Halt(clear_thread_plans, use_run_lock);
5141 diagnostic_manager.Printf(
5142 eDiagnosticSeverityError,
5143 "didn't get running event after initial resume, got %s instead.",
5144 StateAsCString(stop_state));
5145 return_value = eExpressionSetupError;
5150 log->PutCString("Process::RunThreadPlan(): resuming succeeded.");
5151 // We need to call the function synchronously, so spin waiting for it
5152 // to return. If we get interrupted while executing, we're going to
5153 // lose our context, and won't be able to gather the result at this
5154 // point. We set the timeout AFTER the resume, since the resume takes
5155 // some time and we don't want to charge that to the timeout.
5158 log->PutCString("Process::RunThreadPlan(): waiting for next event.");
5162 handle_running_event = true;
5164 // Now wait for the process to stop again:
5167 Timeout<std::micro> timeout =
5168 GetExpressionTimeout(options, before_first_timeout);
5171 auto now = system_clock::now();
5172 log->Printf("Process::RunThreadPlan(): about to wait - now is %s - "
5174 llvm::to_string(now).c_str(),
5175 llvm::to_string(now + *timeout).c_str());
5177 log->Printf("Process::RunThreadPlan(): about to wait forever.");
5181 #ifdef LLDB_RUN_THREAD_HALT_WITH_EVENT
5182 // See comment above...
5183 if (miss_first_event) {
5185 miss_first_event = false;
5189 got_event = listener_sp->GetEvent(event_sp, timeout);
5193 bool keep_going = false;
5194 if (event_sp->GetType() == eBroadcastBitInterrupt) {
5195 const bool clear_thread_plans = false;
5196 const bool use_run_lock = false;
5197 Halt(clear_thread_plans, use_run_lock);
5198 return_value = eExpressionInterrupted;
5199 diagnostic_manager.PutString(eDiagnosticSeverityRemark,
5200 "execution halted by user interrupt.");
5202 log->Printf("Process::RunThreadPlan(): Got interrupted by "
5203 "eBroadcastBitInterrupted, exiting.");
5207 Process::ProcessEventData::GetStateFromEvent(event_sp.get());
5210 "Process::RunThreadPlan(): in while loop, got event: %s.",
5211 StateAsCString(stop_state));
5213 switch (stop_state) {
5214 case lldb::eStateStopped: {
5215 // We stopped, figure out what we are going to do now.
5216 ThreadSP thread_sp =
5217 GetThreadList().FindThreadByIndexID(thread_idx_id);
5219 // Ooh, our thread has vanished. Unlikely that this was
5220 // successful execution...
5222 log->Printf("Process::RunThreadPlan(): execution completed "
5223 "but our thread (index-id=%u) has vanished.",
5225 return_value = eExpressionInterrupted;
5226 } else if (Process::ProcessEventData::GetRestartedFromEvent(
5228 // If we were restarted, we just need to go back up to fetch
5231 log->Printf("Process::RunThreadPlan(): Got a stop and "
5232 "restart, so we'll continue waiting.");
5236 handle_running_event = true;
5238 const bool handle_interrupts = true;
5239 return_value = *HandleStoppedEvent(
5240 *thread, thread_plan_sp, thread_plan_restorer, event_sp,
5241 event_to_broadcast_sp, options, handle_interrupts);
5245 case lldb::eStateRunning:
5246 // This shouldn't really happen, but sometimes we do get two
5247 // running events without an intervening stop, and in that case
5248 // we should just go back to waiting for the stop.
5251 handle_running_event = false;
5256 log->Printf("Process::RunThreadPlan(): execution stopped with "
5257 "unexpected state: %s.",
5258 StateAsCString(stop_state));
5260 if (stop_state == eStateExited)
5261 event_to_broadcast_sp = event_sp;
5263 diagnostic_manager.PutString(
5264 eDiagnosticSeverityError,
5265 "execution stopped with unexpected state.");
5266 return_value = eExpressionInterrupted;
5277 log->PutCString("Process::RunThreadPlan(): got_event was true, but "
5278 "the event pointer was null. How odd...");
5279 return_value = eExpressionInterrupted;
5283 // If we didn't get an event that means we've timed out... We will
5284 // interrupt the process here. Depending on what we were asked to do
5285 // we will either exit, or try with all threads running for the same
5289 if (options.GetTryAllThreads()) {
5290 if (before_first_timeout) {
5292 "Running function with one thread timeout timed out.");
5294 LLDB_LOG(log, "Restarting function with all threads enabled and "
5295 "timeout: {0} timed out, abandoning execution.",
5298 LLDB_LOG(log, "Running function with timeout: {0} timed out, "
5299 "abandoning execution.",
5303 // It is possible that between the time we issued the Halt, and we get
5304 // around to calling Halt the target could have stopped. That's fine,
5305 // Halt will figure that out and send the appropriate Stopped event.
5306 // BUT it is also possible that we stopped & restarted (e.g. hit a
5307 // signal with "stop" set to false.) In
5308 // that case, we'll get the stopped & restarted event, and we should go
5309 // back to waiting for the Halt's stopped event. That's what this
5312 bool back_to_top = true;
5313 uint32_t try_halt_again = 0;
5314 bool do_halt = true;
5315 const uint32_t num_retries = 5;
5316 while (try_halt_again < num_retries) {
5320 log->Printf("Process::RunThreadPlan(): Running Halt.");
5321 const bool clear_thread_plans = false;
5322 const bool use_run_lock = false;
5323 Halt(clear_thread_plans, use_run_lock);
5325 if (halt_error.Success()) {
5327 log->PutCString("Process::RunThreadPlan(): Halt succeeded.");
5330 listener_sp->GetEvent(event_sp, std::chrono::milliseconds(500));
5334 Process::ProcessEventData::GetStateFromEvent(event_sp.get());
5336 log->Printf("Process::RunThreadPlan(): Stopped with event: %s",
5337 StateAsCString(stop_state));
5338 if (stop_state == lldb::eStateStopped &&
5339 Process::ProcessEventData::GetInterruptedFromEvent(
5341 log->PutCString(" Event was the Halt interruption event.");
5344 if (stop_state == lldb::eStateStopped) {
5345 if (Process::ProcessEventData::GetRestartedFromEvent(
5348 log->PutCString("Process::RunThreadPlan(): Went to halt "
5349 "but got a restarted event, there must be "
5350 "an un-restarted stopped event so try "
5352 "Exiting wait loop.");
5358 // Between the time we initiated the Halt and the time we
5359 // delivered it, the process could have already finished its
5360 // job. Check that here:
5361 const bool handle_interrupts = false;
5362 if (auto result = HandleStoppedEvent(
5363 *thread, thread_plan_sp, thread_plan_restorer, event_sp,
5364 event_to_broadcast_sp, options, handle_interrupts)) {
5365 return_value = *result;
5366 back_to_top = false;
5370 if (!options.GetTryAllThreads()) {
5372 log->PutCString("Process::RunThreadPlan(): try_all_threads "
5373 "was false, we stopped so now we're "
5375 return_value = eExpressionInterrupted;
5376 back_to_top = false;
5380 if (before_first_timeout) {
5381 // Set all the other threads to run, and return to the top of
5382 // the loop, which will continue;
5383 before_first_timeout = false;
5384 thread_plan_sp->SetStopOthers(false);
5387 "Process::RunThreadPlan(): about to resume.");
5392 // Running all threads failed, so return Interrupted.
5394 log->PutCString("Process::RunThreadPlan(): running all "
5395 "threads timed out.");
5396 return_value = eExpressionInterrupted;
5397 back_to_top = false;
5403 log->PutCString("Process::RunThreadPlan(): halt said it "
5404 "succeeded, but I got no event. "
5405 "I'm getting out of here passing Interrupted.");
5406 return_value = eExpressionInterrupted;
5407 back_to_top = false;
5416 if (!back_to_top || try_halt_again > num_retries)
5423 // If we had to start up a temporary private state thread to run this
5424 // thread plan, shut it down now.
5425 if (backup_private_state_thread.IsJoinable()) {
5426 StopPrivateStateThread();
5428 m_private_state_thread = backup_private_state_thread;
5429 if (stopper_base_plan_sp) {
5430 thread->DiscardThreadPlansUpToPlan(stopper_base_plan_sp);
5432 if (old_state != eStateInvalid)
5433 m_public_state.SetValueNoLock(old_state);
5436 if (return_value != eExpressionCompleted && log) {
5437 // Print a backtrace into the log so we can figure out where we are:
5439 s.PutCString("Thread state after unsuccessful completion: \n");
5440 thread->GetStackFrameStatus(s, 0, UINT32_MAX, true, UINT32_MAX);
5441 log->PutString(s.GetString());
5443 // Restore the thread state if we are going to discard the plan execution.
5444 // There are three cases where this could happen: 1) The execution
5445 // successfully completed 2) We hit a breakpoint, and ignore_breakpoints
5446 // was true 3) We got some other error, and discard_on_error was true
5447 bool should_unwind = (return_value == eExpressionInterrupted &&
5448 options.DoesUnwindOnError()) ||
5449 (return_value == eExpressionHitBreakpoint &&
5450 options.DoesIgnoreBreakpoints());
5452 if (return_value == eExpressionCompleted || should_unwind) {
5453 thread_plan_sp->RestoreThreadState();
5456 // Now do some processing on the results of the run:
5457 if (return_value == eExpressionInterrupted ||
5458 return_value == eExpressionHitBreakpoint) {
5464 log->PutCString("Process::RunThreadPlan(): Stop event that "
5465 "interrupted us is NULL.");
5470 const char *event_explanation = nullptr;
5474 event_explanation = "<no event>";
5476 } else if (event_sp->GetType() == eBroadcastBitInterrupt) {
5477 event_explanation = "<user interrupt>";
5480 const Process::ProcessEventData *event_data =
5481 Process::ProcessEventData::GetEventDataFromEvent(
5485 event_explanation = "<no event data>";
5489 Process *process = event_data->GetProcessSP().get();
5492 event_explanation = "<no process>";
5496 ThreadList &thread_list = process->GetThreadList();
5498 uint32_t num_threads = thread_list.GetSize();
5499 uint32_t thread_index;
5501 ts.Printf("<%u threads> ", num_threads);
5503 for (thread_index = 0; thread_index < num_threads; ++thread_index) {
5504 Thread *thread = thread_list.GetThreadAtIndex(thread_index).get();
5511 ts.Printf("<0x%4.4" PRIx64 " ", thread->GetID());
5512 RegisterContext *register_context =
5513 thread->GetRegisterContext().get();
5515 if (register_context)
5516 ts.Printf("[ip 0x%" PRIx64 "] ", register_context->GetPC());
5518 ts.Printf("[ip unknown] ");
5520 // Show the private stop info here, the public stop info will be
5521 // from the last natural stop.
5522 lldb::StopInfoSP stop_info_sp = thread->GetPrivateStopInfo();
5524 const char *stop_desc = stop_info_sp->GetDescription();
5526 ts.PutCString(stop_desc);
5531 event_explanation = ts.GetData();
5535 if (event_explanation)
5536 log->Printf("Process::RunThreadPlan(): execution interrupted: %s %s",
5537 s.GetData(), event_explanation);
5539 log->Printf("Process::RunThreadPlan(): execution interrupted: %s",
5543 if (should_unwind) {
5545 log->Printf("Process::RunThreadPlan: ExecutionInterrupted - "
5546 "discarding thread plans up to %p.",
5547 static_cast<void *>(thread_plan_sp.get()));
5548 thread->DiscardThreadPlansUpToPlan(thread_plan_sp);
5551 log->Printf("Process::RunThreadPlan: ExecutionInterrupted - for "
5552 "plan: %p not discarding.",
5553 static_cast<void *>(thread_plan_sp.get()));
5555 } else if (return_value == eExpressionSetupError) {
5557 log->PutCString("Process::RunThreadPlan(): execution set up error.");
5559 if (options.DoesUnwindOnError()) {
5560 thread->DiscardThreadPlansUpToPlan(thread_plan_sp);
5563 if (thread->IsThreadPlanDone(thread_plan_sp.get())) {
5565 log->PutCString("Process::RunThreadPlan(): thread plan is done");
5566 return_value = eExpressionCompleted;
5567 } else if (thread->WasThreadPlanDiscarded(thread_plan_sp.get())) {
5570 "Process::RunThreadPlan(): thread plan was discarded");
5571 return_value = eExpressionDiscarded;
5575 "Process::RunThreadPlan(): thread plan stopped in mid course");
5576 if (options.DoesUnwindOnError() && thread_plan_sp) {
5578 log->PutCString("Process::RunThreadPlan(): discarding thread plan "
5579 "'cause unwind_on_error is set.");
5580 thread->DiscardThreadPlansUpToPlan(thread_plan_sp);
5585 // Thread we ran the function in may have gone away because we ran the
5586 // target Check that it's still there, and if it is put it back in the
5587 // context. Also restore the frame in the context if it is still present.
5588 thread = GetThreadList().FindThreadByIndexID(thread_idx_id, true).get();
5590 exe_ctx.SetFrameSP(thread->GetFrameWithStackID(ctx_frame_id));
5593 // Also restore the current process'es selected frame & thread, since this
5594 // function calling may be done behind the user's back.
5596 if (selected_tid != LLDB_INVALID_THREAD_ID) {
5597 if (GetThreadList().SetSelectedThreadByIndexID(selected_tid) &&
5598 selected_stack_id.IsValid()) {
5599 // We were able to restore the selected thread, now restore the frame:
5600 std::lock_guard<std::recursive_mutex> guard(GetThreadList().GetMutex());
5601 StackFrameSP old_frame_sp =
5602 GetThreadList().GetSelectedThread()->GetFrameWithStackID(
5605 GetThreadList().GetSelectedThread()->SetSelectedFrame(
5606 old_frame_sp.get());
5611 // If the process exited during the run of the thread plan, notify everyone.
5613 if (event_to_broadcast_sp) {
5615 log->PutCString("Process::RunThreadPlan(): rebroadcasting event.");
5616 BroadcastEvent(event_to_broadcast_sp);
5619 return return_value;
5622 const char *Process::ExecutionResultAsCString(ExpressionResults result) {
5623 const char *result_name;
5626 case eExpressionCompleted:
5627 result_name = "eExpressionCompleted";
5629 case eExpressionDiscarded:
5630 result_name = "eExpressionDiscarded";
5632 case eExpressionInterrupted:
5633 result_name = "eExpressionInterrupted";
5635 case eExpressionHitBreakpoint:
5636 result_name = "eExpressionHitBreakpoint";
5638 case eExpressionSetupError:
5639 result_name = "eExpressionSetupError";
5641 case eExpressionParseError:
5642 result_name = "eExpressionParseError";
5644 case eExpressionResultUnavailable:
5645 result_name = "eExpressionResultUnavailable";
5647 case eExpressionTimedOut:
5648 result_name = "eExpressionTimedOut";
5650 case eExpressionStoppedForDebug:
5651 result_name = "eExpressionStoppedForDebug";
5657 void Process::GetStatus(Stream &strm) {
5658 const StateType state = GetState();
5659 if (StateIsStoppedState(state, false)) {
5660 if (state == eStateExited) {
5661 int exit_status = GetExitStatus();
5662 const char *exit_description = GetExitDescription();
5663 strm.Printf("Process %" PRIu64 " exited with status = %i (0x%8.8x) %s\n",
5664 GetID(), exit_status, exit_status,
5665 exit_description ? exit_description : "");
5667 if (state == eStateConnected)
5668 strm.Printf("Connected to remote target.\n");
5670 strm.Printf("Process %" PRIu64 " %s\n", GetID(), StateAsCString(state));
5673 strm.Printf("Process %" PRIu64 " is running.\n", GetID());
5677 size_t Process::GetThreadStatus(Stream &strm,
5678 bool only_threads_with_stop_reason,
5679 uint32_t start_frame, uint32_t num_frames,
5680 uint32_t num_frames_with_source,
5682 size_t num_thread_infos_dumped = 0;
5684 // You can't hold the thread list lock while calling Thread::GetStatus. That
5685 // very well might run code (e.g. if we need it to get return values or
5686 // arguments.) For that to work the process has to be able to acquire it.
5687 // So instead copy the thread ID's, and look them up one by one:
5689 uint32_t num_threads;
5690 std::vector<lldb::tid_t> thread_id_array;
5691 // Scope for thread list locker;
5693 std::lock_guard<std::recursive_mutex> guard(GetThreadList().GetMutex());
5694 ThreadList &curr_thread_list = GetThreadList();
5695 num_threads = curr_thread_list.GetSize();
5697 thread_id_array.resize(num_threads);
5698 for (idx = 0; idx < num_threads; ++idx)
5699 thread_id_array[idx] = curr_thread_list.GetThreadAtIndex(idx)->GetID();
5702 for (uint32_t i = 0; i < num_threads; i++) {
5703 ThreadSP thread_sp(GetThreadList().FindThreadByID(thread_id_array[i]));
5705 if (only_threads_with_stop_reason) {
5706 StopInfoSP stop_info_sp = thread_sp->GetStopInfo();
5707 if (!stop_info_sp || !stop_info_sp->IsValid())
5710 thread_sp->GetStatus(strm, start_frame, num_frames,
5711 num_frames_with_source,
5713 ++num_thread_infos_dumped;
5715 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
5717 log->Printf("Process::GetThreadStatus - thread 0x" PRIu64
5718 " vanished while running Thread::GetStatus.");
5721 return num_thread_infos_dumped;
5724 void Process::AddInvalidMemoryRegion(const LoadRange ®ion) {
5725 m_memory_cache.AddInvalidRange(region.GetRangeBase(), region.GetByteSize());
5728 bool Process::RemoveInvalidMemoryRange(const LoadRange ®ion) {
5729 return m_memory_cache.RemoveInvalidRange(region.GetRangeBase(),
5730 region.GetByteSize());
5733 void Process::AddPreResumeAction(PreResumeActionCallback callback,
5735 m_pre_resume_actions.push_back(PreResumeCallbackAndBaton(callback, baton));
5738 bool Process::RunPreResumeActions() {
5740 while (!m_pre_resume_actions.empty()) {
5741 struct PreResumeCallbackAndBaton action = m_pre_resume_actions.back();
5742 m_pre_resume_actions.pop_back();
5743 bool this_result = action.callback(action.baton);
5745 result = this_result;
5750 void Process::ClearPreResumeActions() { m_pre_resume_actions.clear(); }
5752 void Process::ClearPreResumeAction(PreResumeActionCallback callback, void *baton)
5754 PreResumeCallbackAndBaton element(callback, baton);
5755 auto found_iter = std::find(m_pre_resume_actions.begin(), m_pre_resume_actions.end(), element);
5756 if (found_iter != m_pre_resume_actions.end())
5758 m_pre_resume_actions.erase(found_iter);
5762 ProcessRunLock &Process::GetRunLock() {
5763 if (m_private_state_thread.EqualsThread(Host::GetCurrentThread()))
5764 return m_private_run_lock;
5766 return m_public_run_lock;
5769 void Process::Flush() {
5770 m_thread_list.Flush();
5771 m_extended_thread_list.Flush();
5772 m_extended_thread_stop_id = 0;
5773 m_queue_list.Clear();
5774 m_queue_list_stop_id = 0;
5777 void Process::DidExec() {
5778 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
5780 log->Printf("Process::%s()", __FUNCTION__);
5782 Target &target = GetTarget();
5783 target.CleanupProcess();
5784 target.ClearModules(false);
5785 m_dynamic_checkers_ap.reset();
5787 m_system_runtime_ap.reset();
5790 m_jit_loaders_ap.reset();
5791 m_image_tokens.clear();
5792 m_allocated_memory_cache.Clear();
5793 m_language_runtimes.clear();
5794 m_instrumentation_runtimes.clear();
5795 m_thread_list.DiscardThreadPlans();
5796 m_memory_cache.Clear(true);
5799 // Flush the process (threads and all stack frames) after running
5800 // CompleteAttach() in case the dynamic loader loaded things in new
5804 // After we figure out what was loaded/unloaded in CompleteAttach, we need to
5805 // let the target know so it can do any cleanup it needs to.
5809 addr_t Process::ResolveIndirectFunction(const Address *address, Status &error) {
5810 if (address == nullptr) {
5811 error.SetErrorString("Invalid address argument");
5812 return LLDB_INVALID_ADDRESS;
5815 addr_t function_addr = LLDB_INVALID_ADDRESS;
5817 addr_t addr = address->GetLoadAddress(&GetTarget());
5818 std::map<addr_t, addr_t>::const_iterator iter =
5819 m_resolved_indirect_addresses.find(addr);
5820 if (iter != m_resolved_indirect_addresses.end()) {
5821 function_addr = (*iter).second;
5823 if (!InferiorCall(this, address, function_addr)) {
5824 Symbol *symbol = address->CalculateSymbolContextSymbol();
5825 error.SetErrorStringWithFormat(
5826 "Unable to call resolver for indirect function %s",
5827 symbol ? symbol->GetName().AsCString() : "<UNKNOWN>");
5828 function_addr = LLDB_INVALID_ADDRESS;
5830 m_resolved_indirect_addresses.insert(
5831 std::pair<addr_t, addr_t>(addr, function_addr));
5834 return function_addr;
5837 void Process::ModulesDidLoad(ModuleList &module_list) {
5838 SystemRuntime *sys_runtime = GetSystemRuntime();
5840 sys_runtime->ModulesDidLoad(module_list);
5843 GetJITLoaders().ModulesDidLoad(module_list);
5845 // Give runtimes a chance to be created.
5846 InstrumentationRuntime::ModulesDidLoad(module_list, this,
5847 m_instrumentation_runtimes);
5849 // Tell runtimes about new modules.
5850 for (auto pos = m_instrumentation_runtimes.begin();
5851 pos != m_instrumentation_runtimes.end(); ++pos) {
5852 InstrumentationRuntimeSP runtime = pos->second;
5853 runtime->ModulesDidLoad(module_list);
5856 // Let any language runtimes we have already created know about the modules
5859 // Iterate over a copy of this language runtime list in case the language
5860 // runtime ModulesDidLoad somehow causes the language runtime to be
5862 LanguageRuntimeCollection language_runtimes(m_language_runtimes);
5863 for (const auto &pair : language_runtimes) {
5864 // We must check language_runtime_sp to make sure it is not nullptr as we
5865 // might cache the fact that we didn't have a language runtime for a
5867 LanguageRuntimeSP language_runtime_sp = pair.second;
5868 if (language_runtime_sp)
5869 language_runtime_sp->ModulesDidLoad(module_list);
5872 // If we don't have an operating system plug-in, try to load one since
5873 // loading shared libraries might cause a new one to try and load
5875 LoadOperatingSystemPlugin(false);
5877 // Give structured-data plugins a chance to see the modified modules.
5878 for (auto pair : m_structured_data_plugin_map) {
5880 pair.second->ModulesDidLoad(*this, module_list);
5884 void Process::PrintWarning(uint64_t warning_type, const void *repeat_key,
5885 const char *fmt, ...) {
5886 bool print_warning = true;
5888 StreamSP stream_sp = GetTarget().GetDebugger().GetAsyncOutputStream();
5891 if (warning_type == eWarningsOptimization && !GetWarningsOptimization()) {
5895 if (repeat_key != nullptr) {
5896 WarningsCollection::iterator it = m_warnings_issued.find(warning_type);
5897 if (it == m_warnings_issued.end()) {
5898 m_warnings_issued[warning_type] = WarningsPointerSet();
5899 m_warnings_issued[warning_type].insert(repeat_key);
5901 if (it->second.find(repeat_key) != it->second.end()) {
5902 print_warning = false;
5904 it->second.insert(repeat_key);
5909 if (print_warning) {
5911 va_start(args, fmt);
5912 stream_sp->PrintfVarArg(fmt, args);
5917 void Process::PrintWarningOptimization(const SymbolContext &sc) {
5918 if (GetWarningsOptimization() && sc.module_sp &&
5919 !sc.module_sp->GetFileSpec().GetFilename().IsEmpty() && sc.function &&
5920 sc.function->GetIsOptimized()) {
5921 PrintWarning(Process::Warnings::eWarningsOptimization, sc.module_sp.get(),
5922 "%s was compiled with optimization - stepping may behave "
5923 "oddly; variables may not be available.\n",
5924 sc.module_sp->GetFileSpec().GetFilename().GetCString());
5928 bool Process::GetProcessInfo(ProcessInstanceInfo &info) {
5931 PlatformSP platform_sp = GetTarget().GetPlatform();
5935 return platform_sp->GetProcessInfo(GetID(), info);
5938 ThreadCollectionSP Process::GetHistoryThreads(lldb::addr_t addr) {
5939 ThreadCollectionSP threads;
5941 const MemoryHistorySP &memory_history =
5942 MemoryHistory::FindPlugin(shared_from_this());
5944 if (!memory_history) {
5948 threads.reset(new ThreadCollection(memory_history->GetHistoryThreads(addr)));
5953 InstrumentationRuntimeSP
5954 Process::GetInstrumentationRuntime(lldb::InstrumentationRuntimeType type) {
5955 InstrumentationRuntimeCollection::iterator pos;
5956 pos = m_instrumentation_runtimes.find(type);
5957 if (pos == m_instrumentation_runtimes.end()) {
5958 return InstrumentationRuntimeSP();
5960 return (*pos).second;
5963 bool Process::GetModuleSpec(const FileSpec &module_file_spec,
5964 const ArchSpec &arch, ModuleSpec &module_spec) {
5965 module_spec.Clear();
5969 size_t Process::AddImageToken(lldb::addr_t image_ptr) {
5970 m_image_tokens.push_back(image_ptr);
5971 return m_image_tokens.size() - 1;
5974 lldb::addr_t Process::GetImagePtrFromToken(size_t token) const {
5975 if (token < m_image_tokens.size())
5976 return m_image_tokens[token];
5977 return LLDB_INVALID_IMAGE_TOKEN;
5980 void Process::ResetImageToken(size_t token) {
5981 if (token < m_image_tokens.size())
5982 m_image_tokens[token] = LLDB_INVALID_IMAGE_TOKEN;
5986 Process::AdvanceAddressToNextBranchInstruction(Address default_stop_addr,
5987 AddressRange range_bounds) {
5988 Target &target = GetTarget();
5989 DisassemblerSP disassembler_sp;
5990 InstructionList *insn_list = nullptr;
5992 Address retval = default_stop_addr;
5994 if (!target.GetUseFastStepping())
5996 if (!default_stop_addr.IsValid())
5999 ExecutionContext exe_ctx(this);
6000 const char *plugin_name = nullptr;
6001 const char *flavor = nullptr;
6002 const bool prefer_file_cache = true;
6003 disassembler_sp = Disassembler::DisassembleRange(
6004 target.GetArchitecture(), plugin_name, flavor, exe_ctx, range_bounds,
6006 if (disassembler_sp)
6007 insn_list = &disassembler_sp->GetInstructionList();
6009 if (insn_list == nullptr) {
6013 size_t insn_offset =
6014 insn_list->GetIndexOfInstructionAtAddress(default_stop_addr);
6015 if (insn_offset == UINT32_MAX) {
6019 uint32_t branch_index =
6020 insn_list->GetIndexOfNextBranchInstruction(insn_offset, target);
6021 if (branch_index == UINT32_MAX) {
6025 if (branch_index > insn_offset) {
6026 Address next_branch_insn_address =
6027 insn_list->GetInstructionAtIndex(branch_index)->GetAddress();
6028 if (next_branch_insn_address.IsValid() &&
6029 range_bounds.ContainsFileAddress(next_branch_insn_address)) {
6030 retval = next_branch_insn_address;
6038 Process::GetMemoryRegions(lldb_private::MemoryRegionInfos ®ion_list) {
6042 lldb::addr_t range_end = 0;
6044 region_list.clear();
6046 lldb_private::MemoryRegionInfo region_info;
6047 error = GetMemoryRegionInfo(range_end, region_info);
6048 // GetMemoryRegionInfo should only return an error if it is unimplemented.
6050 region_list.clear();
6054 range_end = region_info.GetRange().GetRangeEnd();
6055 if (region_info.GetMapped() == MemoryRegionInfo::eYes) {
6056 region_list.push_back(std::move(region_info));
6058 } while (range_end != LLDB_INVALID_ADDRESS);
6064 Process::ConfigureStructuredData(const ConstString &type_name,
6065 const StructuredData::ObjectSP &config_sp) {
6066 // If you get this, the Process-derived class needs to implement a method to
6067 // enable an already-reported asynchronous structured data feature. See
6068 // ProcessGDBRemote for an example implementation over gdb-remote.
6069 return Status("unimplemented");
6072 void Process::MapSupportedStructuredDataPlugins(
6073 const StructuredData::Array &supported_type_names) {
6074 Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
6076 // Bail out early if there are no type names to map.
6077 if (supported_type_names.GetSize() == 0) {
6079 log->Printf("Process::%s(): no structured data types supported",
6084 // Convert StructuredData type names to ConstString instances.
6085 std::set<ConstString> const_type_names;
6088 log->Printf("Process::%s(): the process supports the following async "
6089 "structured data types:",
6092 supported_type_names.ForEach(
6093 [&const_type_names, &log](StructuredData::Object *object) {
6095 // Invalid - shouldn't be null objects in the array.
6099 auto type_name = object->GetAsString();
6101 // Invalid format - all type names should be strings.
6105 const_type_names.insert(ConstString(type_name->GetValue()));
6106 LLDB_LOG(log, "- {0}", type_name->GetValue());
6110 // For each StructuredDataPlugin, if the plugin handles any of the types in
6111 // the supported_type_names, map that type name to that plugin. Stop when
6112 // we've consumed all the type names.
6113 // FIXME: should we return an error if there are type names nobody
6115 for (uint32_t plugin_index = 0; !const_type_names.empty(); plugin_index++) {
6116 auto create_instance =
6117 PluginManager::GetStructuredDataPluginCreateCallbackAtIndex(
6119 if (!create_instance)
6122 // Create the plugin.
6123 StructuredDataPluginSP plugin_sp = (*create_instance)(*this);
6125 // This plugin doesn't think it can work with the process. Move on to the
6130 // For any of the remaining type names, map any that this plugin supports.
6131 std::vector<ConstString> names_to_remove;
6132 for (auto &type_name : const_type_names) {
6133 if (plugin_sp->SupportsStructuredDataType(type_name)) {
6134 m_structured_data_plugin_map.insert(
6135 std::make_pair(type_name, plugin_sp));
6136 names_to_remove.push_back(type_name);
6138 log->Printf("Process::%s(): using plugin %s for type name "
6140 __FUNCTION__, plugin_sp->GetPluginName().GetCString(),
6141 type_name.GetCString());
6145 // Remove the type names that were consumed by this plugin.
6146 for (auto &type_name : names_to_remove)
6147 const_type_names.erase(type_name);
6151 bool Process::RouteAsyncStructuredData(
6152 const StructuredData::ObjectSP object_sp) {
6153 // Nothing to do if there's no data.
6157 // The contract is this must be a dictionary, so we can look up the routing
6158 // key via the top-level 'type' string value within the dictionary.
6159 StructuredData::Dictionary *dictionary = object_sp->GetAsDictionary();
6163 // Grab the async structured type name (i.e. the feature/plugin name).
6164 ConstString type_name;
6165 if (!dictionary->GetValueForKeyAsString("type", type_name))
6168 // Check if there's a plugin registered for this type name.
6169 auto find_it = m_structured_data_plugin_map.find(type_name);
6170 if (find_it == m_structured_data_plugin_map.end()) {
6171 // We don't have a mapping for this structured data type.
6175 // Route the structured data to the plugin.
6176 find_it->second->HandleArrivalOfStructuredData(*this, type_name, object_sp);
6180 Status Process::UpdateAutomaticSignalFiltering() {
6181 // Default implementation does nothign.
6182 // No automatic signal filtering to speak of.
6186 UtilityFunction *Process::GetLoadImageUtilityFunction(
6188 llvm::function_ref<std::unique_ptr<UtilityFunction>()> factory) {
6189 if (platform != GetTarget().GetPlatform().get())
6191 std::call_once(m_dlopen_utility_func_flag_once,
6192 [&] { m_dlopen_utility_func_up = factory(); });
6193 return m_dlopen_utility_func_up.get();