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