1//===-- tsan_platform_mac.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 ThreadSanitizer (TSan), a race detector. 11// 12// Mac-specific code. 13//===----------------------------------------------------------------------===// 14 15#include "sanitizer_common/sanitizer_platform.h" 16#if SANITIZER_MAC 17 18#include "sanitizer_common/sanitizer_common.h" 19#include "sanitizer_common/sanitizer_libc.h" 20#include "sanitizer_common/sanitizer_procmaps.h" 21#include "tsan_platform.h" 22#include "tsan_rtl.h" 23#include "tsan_flags.h" 24 25#include <pthread.h> 26#include <signal.h> 27#include <stdio.h> 28#include <stdlib.h> 29#include <string.h> 30#include <stdarg.h> 31#include <sys/mman.h> 32#include <sys/syscall.h> 33#include <sys/time.h> 34#include <sys/types.h> 35#include <sys/resource.h> 36#include <sys/stat.h> 37#include <unistd.h> 38#include <errno.h> 39#include <sched.h> 40 41namespace __tsan { 42 43ScopedInRtl::ScopedInRtl() { 44} 45 46ScopedInRtl::~ScopedInRtl() { 47} 48 49uptr GetShadowMemoryConsumption() { 50 return 0; 51} 52 53void FlushShadowMemory() { 54} 55 56#ifndef TSAN_GO 57void InitializeShadowMemory() { 58 uptr shadow = (uptr)MmapFixedNoReserve(kLinuxShadowBeg, 59 kLinuxShadowEnd - kLinuxShadowBeg); 60 if (shadow != kLinuxShadowBeg) { 61 Printf("FATAL: ThreadSanitizer can not mmap the shadow memory\n"); 62 Printf("FATAL: Make sure to compile with -fPIE and " 63 "to link with -pie.\n"); 64 Die(); 65 } 66 DPrintf("kLinuxShadow %zx-%zx (%zuGB)\n", 67 kLinuxShadowBeg, kLinuxShadowEnd, 68 (kLinuxShadowEnd - kLinuxShadowBeg) >> 30); 69 DPrintf("kLinuxAppMem %zx-%zx (%zuGB)\n", 70 kLinuxAppMemBeg, kLinuxAppMemEnd, 71 (kLinuxAppMemEnd - kLinuxAppMemBeg) >> 30); 72} 73#endif 74 75const char *InitializePlatform() { 76 void *p = 0; 77 if (sizeof(p) == 8) { 78 // Disable core dumps, dumping of 16TB usually takes a bit long. 79 // The following magic is to prevent clang from replacing it with memset. 80 volatile rlimit lim; 81 lim.rlim_cur = 0; 82 lim.rlim_max = 0; 83 setrlimit(RLIMIT_CORE, (rlimit*)&lim); 84 } 85 86 return GetEnv(kTsanOptionsEnv); 87} 88 89void FinalizePlatform() { 90 fflush(0); 91} 92 93} // namespace __tsan 94 95#endif // SANITIZER_MAC 96