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 __sanitizer {
41
Die()42 void Die() {
43 _exit(1);
44 }
45
46 } // namespace __sanitizer
47
48 namespace __tsan {
49
ScopedInRtl()50 ScopedInRtl::ScopedInRtl() {
51 }
52
~ScopedInRtl()53 ScopedInRtl::~ScopedInRtl() {
54 }
55
GetShadowMemoryConsumption()56 uptr GetShadowMemoryConsumption() {
57 return 0;
58 }
59
FlushShadowMemory()60 void FlushShadowMemory() {
61 }
62
InitializeShadowMemory()63 void InitializeShadowMemory() {
64 uptr shadow = (uptr)MmapFixedNoReserve(kLinuxShadowBeg,
65 kLinuxShadowEnd - kLinuxShadowBeg);
66 if (shadow != kLinuxShadowBeg) {
67 TsanPrintf("FATAL: ThreadSanitizer can not mmap the shadow memory\n");
68 TsanPrintf("FATAL: Make sure to compile with -fPIE and "
69 "to link with -pie.\n");
70 Die();
71 }
72 DPrintf("kLinuxShadow %zx-%zx (%zuGB)\n",
73 kLinuxShadowBeg, kLinuxShadowEnd,
74 (kLinuxShadowEnd - kLinuxShadowBeg) >> 30);
75 DPrintf("kLinuxAppMem %zx-%zx (%zuGB)\n",
76 kLinuxAppMemBeg, kLinuxAppMemEnd,
77 (kLinuxAppMemEnd - kLinuxAppMemBeg) >> 30);
78 }
79
InitializePlatform()80 const char *InitializePlatform() {
81 void *p = 0;
82 if (sizeof(p) == 8) {
83 // Disable core dumps, dumping of 16TB usually takes a bit long.
84 // The following magic is to prevent clang from replacing it with memset.
85 volatile rlimit lim;
86 lim.rlim_cur = 0;
87 lim.rlim_max = 0;
88 setrlimit(RLIMIT_CORE, (rlimit*)&lim);
89 }
90
91 return getenv("TSAN_OPTIONS");
92 }
93
FinalizePlatform()94 void FinalizePlatform() {
95 fflush(0);
96 }
97
GetTlsSize()98 uptr GetTlsSize() {
99 return 0;
100 }
101
GetThreadStackAndTls(bool main,uptr * stk_addr,uptr * stk_size,uptr * tls_addr,uptr * tls_size)102 void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
103 uptr *tls_addr, uptr *tls_size) {
104 *stk_addr = 0;
105 *stk_size = 0;
106 *tls_addr = 0;
107 *tls_size = 0;
108 }
109
110 } // namespace __tsan
111
112 #endif // #ifdef __APPLE__
113