libsanitizer/lsan/lsan.cc

   1 //=-- lsan.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 LeakSanitizer.
   9 // Standalone LSan RTL.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "lsan.h"
  14
  15 #include "sanitizer_common/sanitizer_flags.h"
  16 #include "sanitizer_common/sanitizer_stacktrace.h"
  17 #include "lsan_allocator.h"
  18 #include "lsan_common.h"
  19 #include "lsan_thread.h"
  20
  21 bool lsan_inited;
  22 bool lsan_init_is_running;
  23
  24 namespace __lsan {
  25
  26 static void InitializeCommonFlags() {
  27   CommonFlags *cf = common_flags();
  28   SetCommonFlagsDefaults(cf);
  29   cf->external_symbolizer_path = GetEnv("LSAN_SYMBOLIZER_PATH");
  30   cf->malloc_context_size = 30;
  31   cf->detect_leaks = true;
  32
  33   ParseCommonFlagsFromString(cf, GetEnv("LSAN_OPTIONS"));
  34 }
  35
  36 ///// Interface to the common LSan module. /////
  37 bool WordIsPoisoned(uptr addr) {
  38   return false;
  39 }
  40
  41 }  // namespace __lsan
  42
  43 using namespace __lsan;  // NOLINT
  44
  45 extern "C" void __lsan_init() {
  46   CHECK(!lsan_init_is_running);
  47   if (lsan_inited)
  48     return;
  49   lsan_init_is_running = true;
  50   SanitizerToolName = "LeakSanitizer";
  51   InitializeCommonFlags();
  52   InitializeAllocator();
  53   InitTlsSize();
  54   InitializeInterceptors();
  55   InitializeThreadRegistry();
  56   u32 tid = ThreadCreate(0, 0, true);
  57   CHECK_EQ(tid, 0);
  58   ThreadStart(tid, GetTid());
  59   SetCurrentThread(tid);
  60
  61   Symbolizer::Init(common_flags()->external_symbolizer_path);
  62
  63   InitCommonLsan();
  64   if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit)
  65     Atexit(DoLeakCheck);
  66   lsan_inited = true;
  67   lsan_init_is_running = false;
  68 }