1df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov/* 2df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * Copyright (C) 2015 The Android Open Source Project 3df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * 4df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * Licensed under the Apache License, Version 2.0 (the "License"); 5df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * you may not use this file except in compliance with the License. 6df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * You may obtain a copy of the License at 7df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * 8df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * http://www.apache.org/licenses/LICENSE-2.0 9df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * 10df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * Unless required by applicable law or agreed to in writing, software 11df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * distributed under the License is distributed on an "AS IS" BASIS, 12df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * See the License for the specific language governing permissions and 14df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov * limitations under the License. 15df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov */ 16df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov#include <sys/cdefs.h> 17df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov 18fa432524a66e5797874ef50e4ede95ded4cee199dimitry#include <private/bionic_defs.h> 19fa432524a66e5797874ef50e4ede95ded4cee199dimitry 20952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui#include "pthread_internal.h" 21952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui 2242d949ff9d2956e25f84e537f43a8f93ecb37bafElliott Hughesclass thread_local_dtor { 2342d949ff9d2956e25f84e537f43a8f93ecb37bafElliott Hughes public: 24df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov void (*func) (void *); 25df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov void *arg; 26df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov void *dso_handle; // unused... 27df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov thread_local_dtor* next; 28df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov}; 29df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov 30fa432524a66e5797874ef50e4ede95ded4cee199dimitryextern "C" int __cxa_thread_atexit_impl(void (*func) (void *), void *arg, void *dso_handle); 3106016f226efe7aff2736643cb8e719c513948eccdimitryextern "C" void __loader_add_thread_local_dtor(void* dso_handle) __attribute__((weak)); 3206016f226efe7aff2736643cb8e719c513948eccdimitryextern "C" void __loader_remove_thread_local_dtor(void* dso_handle) __attribute__((weak)); 33fa432524a66e5797874ef50e4ede95ded4cee199dimitry 34fa432524a66e5797874ef50e4ede95ded4cee199dimitry__BIONIC_WEAK_FOR_NATIVE_BRIDGE 35fa432524a66e5797874ef50e4ede95ded4cee199dimitryint __cxa_thread_atexit_impl(void (*func) (void *), void *arg, void *dso_handle) { 36df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov thread_local_dtor* dtor = new thread_local_dtor(); 37df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov 38df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov dtor->func = func; 39df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov dtor->arg = arg; 40df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov dtor->dso_handle = dso_handle; 41df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov 42952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui pthread_internal_t* thread = __get_thread(); 43952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui dtor->next = thread->thread_local_dtors; 44952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui thread->thread_local_dtors = dtor; 4506016f226efe7aff2736643cb8e719c513948eccdimitry if (__loader_add_thread_local_dtor != nullptr) { 4606016f226efe7aff2736643cb8e719c513948eccdimitry __loader_add_thread_local_dtor(dso_handle); 4706016f226efe7aff2736643cb8e719c513948eccdimitry } 48df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov return 0; 49df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov} 50df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov 51df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanovextern "C" __LIBC_HIDDEN__ void __cxa_thread_finalize() { 52952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui pthread_internal_t* thread = __get_thread(); 53952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui while (thread->thread_local_dtors != nullptr) { 54952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui thread_local_dtor* current = thread->thread_local_dtors; 55952e9eb0866bc2061b671e8d6c90cae275eda6bdYabin Cui thread->thread_local_dtors = current->next; 56df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov 57df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov current->func(current->arg); 5806016f226efe7aff2736643cb8e719c513948eccdimitry if (__loader_remove_thread_local_dtor != nullptr) { 5906016f226efe7aff2736643cb8e719c513948eccdimitry __loader_remove_thread_local_dtor(current->dso_handle); 6006016f226efe7aff2736643cb8e719c513948eccdimitry } 61df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov delete current; 62df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov } 63df79c330d895af31f39ee301dee62731fa586168Dmitriy Ivanov} 64