1//===-- memprof_posix.cpp ------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of MemProfiler, a memory profiler.
10//
11// Posix-specific details.
12//===----------------------------------------------------------------------===//
13
14#include "sanitizer_common/sanitizer_platform.h"
15#if !SANITIZER_POSIX
16#error Only Posix supported
17#endif
18
19#include "memprof_thread.h"
20#include "sanitizer_common/sanitizer_internal_defs.h"
21
22#include <pthread.h>
23
24namespace __memprof {
25
26// ---------------------- TSD ---------------- {{{1
27
28static pthread_key_t tsd_key;
29static bool tsd_key_inited = false;
30void TSDInit(void (*destructor)(void *tsd)) {
31  CHECK(!tsd_key_inited);
32  tsd_key_inited = true;
33  CHECK_EQ(0, pthread_key_create(&tsd_key, destructor));
34}
35
36void *TSDGet() {
37  CHECK(tsd_key_inited);
38  return pthread_getspecific(tsd_key);
39}
40
41void TSDSet(void *tsd) {
42  CHECK(tsd_key_inited);
43  pthread_setspecific(tsd_key, tsd);
44}
45
46void PlatformTSDDtor(void *tsd) {
47  MemprofThreadContext *context = (MemprofThreadContext *)tsd;
48  if (context->destructor_iterations > 1) {
49    context->destructor_iterations--;
50    CHECK_EQ(0, pthread_setspecific(tsd_key, tsd));
51    return;
52  }
53  MemprofThread::TSDDtor(tsd);
54}
55} // namespace __memprof
56