libsanitizer/tsan/tsan_platform_mac.cc

   1 //===-- tsan_platform_mac.cc ----------------------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is a part of ThreadSanitizer (TSan), a race detector.
   9 //
  10 // Mac-specific code.
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifdef __APPLE__
  14
  15 #include "sanitizer_common/sanitizer_common.h"
  16 #include "sanitizer_common/sanitizer_libc.h"
  17 #include "sanitizer_common/sanitizer_procmaps.h"
  18 #include "tsan_platform.h"
  19 #include "tsan_rtl.h"
  20 #include "tsan_flags.h"
  21
  22 #include <pthread.h>
  23 #include <signal.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <stdarg.h>
  28 #include <sys/mman.h>
  29 #include <sys/syscall.h>
  30 #include <sys/time.h>
  31 #include <sys/types.h>
  32 #include <sys/resource.h>
  33 #include <sys/stat.h>
  34 #include <unistd.h>
  35 #include <errno.h>
  36 #include <sched.h>
  37
  38 namespace __tsan {
  39
  40 ScopedInRtl::ScopedInRtl() {
  41 }
  42
  43 ScopedInRtl::~ScopedInRtl() {
  44 }
  45
  46 uptr GetShadowMemoryConsumption() {
  47   return 0;
  48 }
  49
  50 void FlushShadowMemory() {
  51 }
  52
  53 #ifndef TSAN_GO
  54 void InitializeShadowMemory() {
  55   uptr shadow = (uptr)MmapFixedNoReserve(kLinuxShadowBeg,
  56     kLinuxShadowEnd - kLinuxShadowBeg);
  57   if (shadow != kLinuxShadowBeg) {
  58     Printf("FATAL: ThreadSanitizer can not mmap the shadow memory\n");
  59     Printf("FATAL: Make sure to compile with -fPIE and "
  60            "to link with -pie.\n");
  61     Die();
  62   }
  63   DPrintf("kLinuxShadow %zx-%zx (%zuGB)\n",
  64       kLinuxShadowBeg, kLinuxShadowEnd,
  65       (kLinuxShadowEnd - kLinuxShadowBeg) >> 30);
  66   DPrintf("kLinuxAppMem %zx-%zx (%zuGB)\n",
  67       kLinuxAppMemBeg, kLinuxAppMemEnd,
  68       (kLinuxAppMemEnd - kLinuxAppMemBeg) >> 30);
  69 }
  70 #endif
  71
  72 const char *InitializePlatform() {
  73   void *p = 0;
  74   if (sizeof(p) == 8) {
  75     // Disable core dumps, dumping of 16TB usually takes a bit long.
  76     // The following magic is to prevent clang from replacing it with memset.
  77     volatile rlimit lim;
  78     lim.rlim_cur = 0;
  79     lim.rlim_max = 0;
  80     setrlimit(RLIMIT_CORE, (rlimit*)&lim);
  81   }
  82
  83   return GetEnv(kTsanOptionsEnv);
  84 }
  85
  86 void FinalizePlatform() {
  87   fflush(0);
  88 }
  89
  90 uptr GetTlsSize() {
  91   return 0;
  92 }
  93
  94 void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
  95                           uptr *tls_addr, uptr *tls_size) {
  96   *stk_addr = 0;
  97   *stk_size = 0;
  98   *tls_addr = 0;
  99   *tls_size = 0;
 100 }
 101
 102 }  // namespace __tsan
 103
 104 #endif  // #ifdef __APPLE__