1//===-- asan_posix.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 AddressSanitizer, an address sanity checker.
9//
10// Posix-specific details.
11//===----------------------------------------------------------------------===//
12
13#include "sanitizer_common/sanitizer_platform.h"
14#if SANITIZER_POSIX
15
16#include "asan_internal.h"
17#include "asan_interceptors.h"
18#include "asan_mapping.h"
19#include "asan_report.h"
20#include "asan_stack.h"
21#include "sanitizer_common/sanitizer_libc.h"
22#include "sanitizer_common/sanitizer_posix.h"
23#include "sanitizer_common/sanitizer_procmaps.h"
24
25#include <pthread.h>
26#include <stdlib.h>
27#include <sys/time.h>
28#include <sys/resource.h>
29#include <unistd.h>
30
31namespace __asan {
32
33void AsanOnDeadlySignal(int signo, void *siginfo, void *context) {
34  StartReportDeadlySignal();
35  SignalContext sig(siginfo, context);
36  ReportDeadlySignal(sig);
37}
38
39// ---------------------- TSD ---------------- {{{1
40
41static pthread_key_t tsd_key;
42static bool tsd_key_inited = false;
43void AsanTSDInit(void (*destructor)(void *tsd)) {
44  CHECK(!tsd_key_inited);
45  tsd_key_inited = true;
46  CHECK_EQ(0, pthread_key_create(&tsd_key, destructor));
47}
48
49void *AsanTSDGet() {
50  CHECK(tsd_key_inited);
51  return pthread_getspecific(tsd_key);
52}
53
54void AsanTSDSet(void *tsd) {
55  CHECK(tsd_key_inited);
56  pthread_setspecific(tsd_key, tsd);
57}
58
59void PlatformTSDDtor(void *tsd) {
60  AsanThreadContext *context = (AsanThreadContext*)tsd;
61  if (context->destructor_iterations > 1) {
62    context->destructor_iterations--;
63    CHECK_EQ(0, pthread_setspecific(tsd_key, tsd));
64    return;
65  }
66  AsanThread::TSDDtor(tsd);
67}
68}  // namespace __asan
69
70#endif  // SANITIZER_POSIX
71