__cxa_thread_atexit_impl.cpp revision 952e9eb0866bc2061b671e8d6c90cae275eda6bd 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16#include <sys/cdefs.h>
17
18#include "pthread_internal.h"
19
20struct thread_local_dtor {
21  void (*func) (void *);
22  void *arg;
23  void *dso_handle; // unused...
24  thread_local_dtor* next;
25};
26
27extern "C" int __cxa_thread_atexit_impl(void (*func) (void *), void *arg, void *dso_handle) {
28  thread_local_dtor* dtor = new thread_local_dtor();
29
30  dtor->func = func;
31  dtor->arg = arg;
32  dtor->dso_handle = dso_handle;
33
34  pthread_internal_t* thread = __get_thread();
35  dtor->next = thread->thread_local_dtors;
36  thread->thread_local_dtors = dtor;
37  return 0;
38}
39
40extern "C" __LIBC_HIDDEN__ void __cxa_thread_finalize() {
41  pthread_internal_t* thread = __get_thread();
42  while (thread->thread_local_dtors != nullptr) {
43    thread_local_dtor* current = thread->thread_local_dtors;
44    thread->thread_local_dtors = current->next;
45
46    current->func(current->arg);
47    delete current;
48  }
49}
50