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
20 namespace __tsan {
21
flags()22 Flags *flags() {
23 return &CTX()->flags;
24 }
25
26 // Can be overriden in frontend.
27 #ifdef TSAN_EXTERNAL_HOOKS
28 void OverrideFlags(Flags *f);
29 #else
30 SANITIZER_INTERFACE_ATTRIBUTE
OverrideFlags(Flags * f)31 void WEAK OverrideFlags(Flags *f) {
32 (void)f;
33 }
34 #endif
35
InitializeFlags(Flags * f,const char * env)36 void 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->log_path = "stderr";
56 f->atexit_sleep_ms = 1000;
57 f->verbosity = 0;
58 f->profile_memory = "";
59 f->flush_memory_ms = 0;
60 f->flush_symbolizer_ms = 5000;
61 f->stop_on_start = false;
62 f->running_on_valgrind = false;
63 f->external_symbolizer_path = "";
64 f->history_size = kGoMode ? 1 : 2; // There are a lot of goroutines in Go.
65 f->io_sync = 1;
66
67 // Let a frontend override.
68 OverrideFlags(f);
69
70 // Override from command line.
71 ParseFlag(env, &f->enable_annotations, "enable_annotations");
72 ParseFlag(env, &f->suppress_equal_stacks, "suppress_equal_stacks");
73 ParseFlag(env, &f->suppress_equal_addresses, "suppress_equal_addresses");
74 ParseFlag(env, &f->suppress_java, "suppress_java");
75 ParseFlag(env, &f->report_bugs, "report_bugs");
76 ParseFlag(env, &f->report_thread_leaks, "report_thread_leaks");
77 ParseFlag(env, &f->report_destroy_locked, "report_destroy_locked");
78 ParseFlag(env, &f->report_signal_unsafe, "report_signal_unsafe");
79 ParseFlag(env, &f->report_atomic_races, "report_atomic_races");
80 ParseFlag(env, &f->force_seq_cst_atomics, "force_seq_cst_atomics");
81 ParseFlag(env, &f->strip_path_prefix, "strip_path_prefix");
82 ParseFlag(env, &f->suppressions, "suppressions");
83 ParseFlag(env, &f->print_suppressions, "print_suppressions");
84 ParseFlag(env, &f->print_benign, "print_benign");
85 ParseFlag(env, &f->exitcode, "exitcode");
86 ParseFlag(env, &f->log_path, "log_path");
87 ParseFlag(env, &f->atexit_sleep_ms, "atexit_sleep_ms");
88 ParseFlag(env, &f->verbosity, "verbosity");
89 ParseFlag(env, &f->profile_memory, "profile_memory");
90 ParseFlag(env, &f->flush_memory_ms, "flush_memory_ms");
91 ParseFlag(env, &f->flush_symbolizer_ms, "flush_symbolizer_ms");
92 ParseFlag(env, &f->stop_on_start, "stop_on_start");
93 ParseFlag(env, &f->external_symbolizer_path, "external_symbolizer_path");
94 ParseFlag(env, &f->history_size, "history_size");
95 ParseFlag(env, &f->io_sync, "io_sync");
96
97 if (!f->report_bugs) {
98 f->report_thread_leaks = false;
99 f->report_destroy_locked = false;
100 f->report_signal_unsafe = false;
101 }
102
103 if (f->history_size < 0 || f->history_size > 7) {
104 Printf("ThreadSanitizer: incorrect value for history_size"
105 " (must be [0..7])\n");
106 Die();
107 }
108
109 if (f->io_sync < 0 || f->io_sync > 2) {
110 Printf("ThreadSanitizer: incorrect value for io_sync"
111 " (must be [0..2])\n");
112 Die();
113 }
114 }
115
116 } // namespace __tsan
117