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 
20 class thread_local_dtor {
21  public:
22   void (*func) (void *);
23   void *arg;
24   void *dso_handle; // unused...
25   thread_local_dtor* next;
26 };
27 
__cxa_thread_atexit_impl(void (* func)(void *),void * arg,void * dso_handle)28 extern "C" int __cxa_thread_atexit_impl(void (*func) (void *), void *arg, void *dso_handle) {
29   thread_local_dtor* dtor = new thread_local_dtor();
30 
31   dtor->func = func;
32   dtor->arg = arg;
33   dtor->dso_handle = dso_handle;
34 
35   pthread_internal_t* thread = __get_thread();
36   dtor->next = thread->thread_local_dtors;
37   thread->thread_local_dtors = dtor;
38   return 0;
39 }
40 
__cxa_thread_finalize()41 extern "C" __LIBC_HIDDEN__ void __cxa_thread_finalize() {
42   pthread_internal_t* thread = __get_thread();
43   while (thread->thread_local_dtors != nullptr) {
44     thread_local_dtor* current = thread->thread_local_dtors;
45     thread->thread_local_dtors = current->next;
46 
47     current->func(current->arg);
48     delete current;
49   }
50 }
51