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