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 #ifdef __APPLE__ 16 17 #include "sanitizer_common/sanitizer_common.h" 18 #include "sanitizer_common/sanitizer_libc.h" 19 #include "sanitizer_common/sanitizer_procmaps.h" 20 #include "tsan_platform.h" 21 #include "tsan_rtl.h" 22 #include "tsan_flags.h" 23 24 #include <pthread.h> 25 #include <signal.h> 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <stdarg.h> 30 #include <sys/mman.h> 31 #include <sys/syscall.h> 32 #include <sys/time.h> 33 #include <sys/types.h> 34 #include <sys/resource.h> 35 #include <sys/stat.h> 36 #include <unistd.h> 37 #include <errno.h> 38 #include <sched.h> 39 40 namespace __tsan { 41 42 ScopedInRtl::ScopedInRtl() { 43 } 44 45 ScopedInRtl::~ScopedInRtl() { 46 } 47 48 uptr GetShadowMemoryConsumption() { 49 return 0; 50 } 51 52 void FlushShadowMemory() { 53 } 54 55 #ifndef TSAN_GO 56 void InitializeShadowMemory() { 57 uptr shadow = (uptr)MmapFixedNoReserve(kLinuxShadowBeg, 58 kLinuxShadowEnd - kLinuxShadowBeg); 59 if (shadow != kLinuxShadowBeg) { 60 Printf("FATAL: ThreadSanitizer can not mmap the shadow memory\n"); 61 Printf("FATAL: Make sure to compile with -fPIE and " 62 "to link with -pie.\n"); 63 Die(); 64 } 65 DPrintf("kLinuxShadow %zx-%zx (%zuGB)\n", 66 kLinuxShadowBeg, kLinuxShadowEnd, 67 (kLinuxShadowEnd - kLinuxShadowBeg) >> 30); 68 DPrintf("kLinuxAppMem %zx-%zx (%zuGB)\n", 69 kLinuxAppMemBeg, kLinuxAppMemEnd, 70 (kLinuxAppMemEnd - kLinuxAppMemBeg) >> 30); 71 } 72 #endif 73 74 const char *InitializePlatform() { 75 void *p = 0; 76 if (sizeof(p) == 8) { 77 // Disable core dumps, dumping of 16TB usually takes a bit long. 78 // The following magic is to prevent clang from replacing it with memset. 79 volatile rlimit lim; 80 lim.rlim_cur = 0; 81 lim.rlim_max = 0; 82 setrlimit(RLIMIT_CORE, (rlimit*)&lim); 83 } 84 85 return GetEnv(kTsanOptionsEnv); 86 } 87 88 void FinalizePlatform() { 89 fflush(0); 90 } 91 92 void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size, 93 uptr *tls_addr, uptr *tls_size) { 94 *stk_addr = 0; 95 *stk_size = 0; 96 *tls_addr = 0; 97 *tls_size = 0; 98 } 99 100 } // namespace __tsan 101 102 #endif // #ifdef __APPLE__ 103
