sys/external/bsd/compiler_rt/dist/lib/lsan/lsan.cc

   1 //=-- lsan.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 LeakSanitizer.
  11 // Standalone LSan RTL.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "lsan.h"
  16
  17 #include "sanitizer_common/sanitizer_flags.h"
  18 #include "sanitizer_common/sanitizer_stacktrace.h"
  19 #include "lsan_allocator.h"
  20 #include "lsan_common.h"
  21 #include "lsan_thread.h"
  22
  23 namespace __lsan {
  24
  25 static void InitializeCommonFlags() {
  26   CommonFlags *cf = common_flags();
  27   cf->external_symbolizer_path = GetEnv("LSAN_SYMBOLIZER_PATH");
  28   cf->symbolize = (cf->external_symbolizer_path &&
  29       cf->external_symbolizer_path[0]);
  30   cf->strip_path_prefix = "";
  31   cf->fast_unwind_on_malloc = true;
  32   cf->malloc_context_size = 30;
  33
  34   ParseCommonFlagsFromString(GetEnv("LSAN_OPTIONS"));
  35 }
  36
  37 void Init() {
  38   static bool inited;
  39   if (inited)
  40     return;
  41   inited = true;
  42   SanitizerToolName = "LeakSanitizer";
  43   InitializeCommonFlags();
  44   InitializeAllocator();
  45   InitTlsSize();
  46   InitializeInterceptors();
  47   InitializeThreadRegistry();
  48   u32 tid = ThreadCreate(0, 0, true);
  49   CHECK_EQ(tid, 0);
  50   ThreadStart(tid, GetTid());
  51   SetCurrentThread(tid);
  52
  53   // Start symbolizer process if necessary.
  54   const char* external_symbolizer = common_flags()->external_symbolizer_path;
  55   if (common_flags()->symbolize && external_symbolizer &&
  56       external_symbolizer[0]) {
  57     InitializeExternalSymbolizer(external_symbolizer);
  58   }
  59
  60   InitCommonLsan();
  61   Atexit(DoLeakCheck);
  62 }
  63
  64 }  // namespace __lsan