1 //===-- tsan_flags.cc -----------------------------------------------------===//
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 //===----------------------------------------------------------------------===//
10 // This file is a part of ThreadSanitizer (TSan), a race detector.
12 //===----------------------------------------------------------------------===//
14 #include "sanitizer_common/sanitizer_flags.h"
15 #include "sanitizer_common/sanitizer_flag_parser.h"
16 #include "sanitizer_common/sanitizer_libc.h"
17 #include "tsan_flags.h"
19 #include "tsan_mman.h"
27 // Can be overriden in frontend.
28 #ifdef TSAN_EXTERNAL_HOOKS
29 extern "C" const char* __tsan_default_options();
31 extern "C" SANITIZER_INTERFACE_ATTRIBUTE
32 const char *WEAK __tsan_default_options() {
37 void Flags::SetDefaults() {
38 #define TSAN_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
39 #include "tsan_flags.inc"
42 second_deadlock_stack = false;
45 void RegisterTsanFlags(FlagParser *parser, Flags *f) {
46 #define TSAN_FLAG(Type, Name, DefaultValue, Description) \
47 RegisterFlag(parser, #Name, Description, &f->Name);
48 #include "tsan_flags.inc"
52 void InitializeFlags(Flags *f, const char *env) {
54 RegisterTsanFlags(&parser, f);
55 RegisterCommonFlags(&parser);
59 SetCommonFlagsDefaults();
61 // Override some common flags defaults.
63 cf.CopyFrom(*common_flags());
64 cf.allow_addr2line = true;
66 cf.detect_deadlocks = true;
68 cf.print_suppressions = false;
69 cf.stack_trace_format = " #%n %f %S %M";
70 OverrideCommonFlags(cf);
73 // Let a frontend override.
74 parser.ParseString(__tsan_default_options());
75 // Override from command line.
76 parser.ParseString(env);
79 if (!f->report_bugs) {
80 f->report_thread_leaks = false;
81 f->report_destroy_locked = false;
82 f->report_signal_unsafe = false;
85 SetVerbosity(common_flags()->verbosity);
87 if (Verbosity()) ReportUnrecognizedFlags();
89 if (common_flags()->help) parser.PrintFlagDescriptions();
91 if (f->history_size < 0 || f->history_size > 7) {
92 Printf("ThreadSanitizer: incorrect value for history_size"
93 " (must be [0..7])\n");
97 if (f->io_sync < 0 || f->io_sync > 2) {
98 Printf("ThreadSanitizer: incorrect value for io_sync"
99 " (must be [0..2])\n");
104 } // namespace __tsan