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 }  // namespace __lsan
  37
  38 using namespace __lsan;  // NOLINT
  39
  40 extern "C" void __lsan_init() {
  41   CHECK(!lsan_init_is_running);
  42   if (lsan_inited)
  43     return;
  44   lsan_init_is_running = true;
  45   SanitizerToolName = "LeakSanitizer";
  46   InitializeCommonFlags();
  47   InitializeAllocator();
  48   InitTlsSize();
  49   InitializeInterceptors();
  50   InitializeThreadRegistry();
  51   u32 tid = ThreadCreate(0, 0, true);
  52   CHECK_EQ(tid, 0);
  53   ThreadStart(tid, GetTid());
  54   SetCurrentThread(tid);
  55
  56   // Start symbolizer process if necessary.
  57   if (common_flags()->symbolize) {
  58     Symbolizer::Init(common_flags()->external_symbolizer_path);
  59   } else {
  60     Symbolizer::Disable();
  61   }
  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 }