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 InitializeCommonFlags()25static 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 cf->detect_leaks = true; 34 cf->leak_check_at_exit = true; 35 36 ParseCommonFlagsFromString(GetEnv("LSAN_OPTIONS")); 37 } 38 Init()39void Init() { 40 static bool inited; 41 if (inited) 42 return; 43 inited = true; 44 SanitizerToolName = "LeakSanitizer"; 45 InitializeCommonFlags(); 46 InitializeAllocator(); 47 InitTlsSize(); 48 InitializeInterceptors(); 49 InitializeThreadRegistry(); 50 u32 tid = ThreadCreate(0, 0, true); 51 CHECK_EQ(tid, 0); 52 ThreadStart(tid, GetTid()); 53 SetCurrentThread(tid); 54 55 // Start symbolizer process if necessary. 56 const char* external_symbolizer = common_flags()->external_symbolizer_path; 57 if (common_flags()->symbolize && external_symbolizer && 58 external_symbolizer[0]) { 59 InitializeExternalSymbolizer(external_symbolizer); 60 } 61 62 InitCommonLsan(); 63 if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit) 64 Atexit(DoLeakCheck); 65 } 66 67 } // namespace __lsan 68