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 namespace __lsan {
  22
  23 static void InitializeCommonFlags() {
  24   CommonFlags *cf = common_flags();
  25   cf->external_symbolizer_path = GetEnv("LSAN_SYMBOLIZER_PATH");
  26   cf->symbolize = true;
  27   cf->strip_path_prefix = "";
  28   cf->fast_unwind_on_malloc = true;
  29   cf->malloc_context_size = 30;
  30   cf->detect_leaks = true;
  31   cf->leak_check_at_exit = true;
  32
  33   ParseCommonFlagsFromString(GetEnv("LSAN_OPTIONS"));
  34 }
  35
  36 void Init() {
  37   static bool inited;
  38   if (inited)
  39     return;
  40   inited = true;
  41   SanitizerToolName = "LeakSanitizer";
  42   InitializeCommonFlags();
  43   InitializeAllocator();
  44   InitTlsSize();
  45   InitializeInterceptors();
  46   InitializeThreadRegistry();
  47   u32 tid = ThreadCreate(0, 0, true);
  48   CHECK_EQ(tid, 0);
  49   ThreadStart(tid, GetTid());
  50   SetCurrentThread(tid);
  51
  52   // Start symbolizer process if necessary.
  53   if (common_flags()->symbolize) {
  54     getSymbolizer()
  55         ->InitializeExternal(common_flags()->external_symbolizer_path);
  56   }
  57
  58   InitCommonLsan();
  59   if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit)
  60     Atexit(DoLeakCheck);
  61 }
  62
  63 }  // namespace __lsan