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"
20 #include "ubsan/ubsan_flags.h"
28 // Can be overriden in frontend.
29 #ifdef TSAN_EXTERNAL_HOOKS
30 extern "C" const char* __tsan_default_options();
32 extern "C" SANITIZER_INTERFACE_ATTRIBUTE
33 const char *WEAK __tsan_default_options() {
38 void Flags::SetDefaults() {
39 #define TSAN_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
40 #include "tsan_flags.inc"
43 second_deadlock_stack = false;
46 void RegisterTsanFlags(FlagParser *parser, Flags *f) {
47 #define TSAN_FLAG(Type, Name, DefaultValue, Description) \
48 RegisterFlag(parser, #Name, Description, &f->Name);
49 #include "tsan_flags.inc"
52 RegisterFlag(parser, "second_deadlock_stack",
53 "Report where each mutex is locked in deadlock reports",
54 &f->second_deadlock_stack);
57 void InitializeFlags(Flags *f, const char *env) {
58 SetCommonFlagsDefaults();
60 // Override some common flags defaults.
62 cf.CopyFrom(*common_flags());
63 cf.allow_addr2line = true;
65 cf.detect_deadlocks = true;
67 cf.print_suppressions = false;
68 cf.stack_trace_format = " #%n %f %S %M";
69 OverrideCommonFlags(cf);
75 RegisterTsanFlags(&parser, f);
76 RegisterCommonFlags(&parser);
78 #if TSAN_CONTAINS_UBSAN
79 __ubsan::Flags *uf = __ubsan::flags();
82 FlagParser ubsan_parser;
83 __ubsan::RegisterUbsanFlags(&ubsan_parser, uf);
84 RegisterCommonFlags(&ubsan_parser);
87 // Let a frontend override.
88 parser.ParseString(__tsan_default_options());
89 #if TSAN_CONTAINS_UBSAN
90 const char *ubsan_default_options = __ubsan::MaybeCallUbsanDefaultOptions();
91 ubsan_parser.ParseString(ubsan_default_options);
93 // Override from command line.
94 parser.ParseString(env);
95 #if TSAN_CONTAINS_UBSAN
96 ubsan_parser.ParseString(GetEnv("UBSAN_OPTIONS"));
100 if (!f->report_bugs) {
101 f->report_thread_leaks = false;
102 f->report_destroy_locked = false;
103 f->report_signal_unsafe = false;
106 SetVerbosity(common_flags()->verbosity);
108 if (Verbosity()) ReportUnrecognizedFlags();
110 if (common_flags()->help) parser.PrintFlagDescriptions();
112 if (f->history_size < 0 || f->history_size > 7) {
113 Printf("ThreadSanitizer: incorrect value for history_size"
114 " (must be [0..7])\n");
118 if (f->io_sync < 0 || f->io_sync > 2) {
119 Printf("ThreadSanitizer: incorrect value for io_sync"
120 " (must be [0..2])\n");
125 } // namespace __tsan