tsan_flags.cc revision dbac0a4a41f405d10e3dcad3597fe08986605289 
1//===-- tsan_flags.cc -----------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is a part of ThreadSanitizer (TSan), a race detector.
11//
12//===----------------------------------------------------------------------===//
13
14#include "sanitizer_common/sanitizer_flags.h"
15#include "sanitizer_common/sanitizer_libc.h"
16#include "tsan_flags.h"
17#include "tsan_rtl.h"
18#include "tsan_mman.h"
19
20namespace __tsan {
21
22Flags *flags() {
23  return &CTX()->flags;
24}
25
26// Can be overriden in frontend.
27#ifdef TSAN_EXTERNAL_HOOKS
28void OverrideFlags(Flags *f);
29#else
30SANITIZER_INTERFACE_ATTRIBUTE
31void WEAK OverrideFlags(Flags *f) {
32  (void)f;
33}
34#endif
35
36void InitializeFlags(Flags *f, const char *env) {
37  internal_memset(f, 0, sizeof(*f));
38
39  // Default values.
40  f->enable_annotations = true;
41  f->suppress_equal_stacks = true;
42  f->suppress_equal_addresses = true;
43  f->suppress_java = false;
44  f->report_bugs = true;
45  f->report_thread_leaks = true;
46  f->report_destroy_locked = true;
47  f->report_signal_unsafe = true;
48  f->report_atomic_races = true;
49  f->force_seq_cst_atomics = false;
50  f->strip_path_prefix = "";
51  f->suppressions = "";
52  f->print_suppressions = false;
53  f->print_benign = false;
54  f->exitcode = 66;
55  f->halt_on_error = false;
56  f->log_path = "stderr";
57  f->atexit_sleep_ms = 1000;
58  f->verbosity = 0;
59  f->profile_memory = "";
60  f->flush_memory_ms = 0;
61  f->flush_symbolizer_ms = 5000;
62  f->stop_on_start = false;
63  f->running_on_valgrind = false;
64  f->external_symbolizer_path = "";
65  f->history_size = kGoMode ? 1 : 2;  // There are a lot of goroutines in Go.
66  f->io_sync = 1;
67
68  // Let a frontend override.
69  OverrideFlags(f);
70
71  // Override from command line.
72  ParseFlag(env, &f->enable_annotations, "enable_annotations");
73  ParseFlag(env, &f->suppress_equal_stacks, "suppress_equal_stacks");
74  ParseFlag(env, &f->suppress_equal_addresses, "suppress_equal_addresses");
75  ParseFlag(env, &f->suppress_java, "suppress_java");
76  ParseFlag(env, &f->report_bugs, "report_bugs");
77  ParseFlag(env, &f->report_thread_leaks, "report_thread_leaks");
78  ParseFlag(env, &f->report_destroy_locked, "report_destroy_locked");
79  ParseFlag(env, &f->report_signal_unsafe, "report_signal_unsafe");
80  ParseFlag(env, &f->report_atomic_races, "report_atomic_races");
81  ParseFlag(env, &f->force_seq_cst_atomics, "force_seq_cst_atomics");
82  ParseFlag(env, &f->strip_path_prefix, "strip_path_prefix");
83  ParseFlag(env, &f->suppressions, "suppressions");
84  ParseFlag(env, &f->print_suppressions, "print_suppressions");
85  ParseFlag(env, &f->print_benign, "print_benign");
86  ParseFlag(env, &f->exitcode, "exitcode");
87  ParseFlag(env, &f->halt_on_error, "halt_on_error");
88  ParseFlag(env, &f->log_path, "log_path");
89  ParseFlag(env, &f->atexit_sleep_ms, "atexit_sleep_ms");
90  ParseFlag(env, &f->verbosity, "verbosity");
91  ParseFlag(env, &f->profile_memory, "profile_memory");
92  ParseFlag(env, &f->flush_memory_ms, "flush_memory_ms");
93  ParseFlag(env, &f->flush_symbolizer_ms, "flush_symbolizer_ms");
94  ParseFlag(env, &f->stop_on_start, "stop_on_start");
95  ParseFlag(env, &f->external_symbolizer_path, "external_symbolizer_path");
96  ParseFlag(env, &f->history_size, "history_size");
97  ParseFlag(env, &f->io_sync, "io_sync");
98
99  if (!f->report_bugs) {
100    f->report_thread_leaks = false;
101    f->report_destroy_locked = false;
102    f->report_signal_unsafe = false;
103  }
104
105  if (f->history_size < 0 || f->history_size > 7) {
106    Printf("ThreadSanitizer: incorrect value for history_size"
107           " (must be [0..7])\n");
108    Die();
109  }
110
111  if (f->io_sync < 0 || f->io_sync > 2) {
112    Printf("ThreadSanitizer: incorrect value for io_sync"
113           " (must be [0..2])\n");
114    Die();
115  }
116}
117
118}  // namespace __tsan
119