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lsan.cc revision 1.1 
      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
     65