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