libsanitizer/tsan/tsan_flags.cc

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