1/* 2 * Copyright (C) 2017 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 17#define LOG_TAG "HalDeathHandler" 18//#define LOG_NDEBUG 0 19 20#include <utils/Log.h> 21 22#include <media/audiohal/hidl/HalDeathHandler.h> 23 24namespace android { 25 26ANDROID_SINGLETON_STATIC_INSTANCE(HalDeathHandler); 27 28// static 29sp<HalDeathHandler> HalDeathHandler::getInstance() { 30 return &Singleton<HalDeathHandler>::getInstance(); 31} 32 33HalDeathHandler::HalDeathHandler() : mSelf(this) { 34} 35 36HalDeathHandler::~HalDeathHandler() { 37} 38 39void HalDeathHandler::registerAtExitHandler(void* cookie, AtExitHandler handler) { 40 std::lock_guard<std::mutex> guard(mHandlersLock); 41 mHandlers.insert({cookie, handler}); 42} 43 44void HalDeathHandler::unregisterAtExitHandler(void* cookie) { 45 std::lock_guard<std::mutex> guard(mHandlersLock); 46 mHandlers.erase(cookie); 47} 48 49void HalDeathHandler::serviceDied(uint64_t /*cookie*/, const wp<IBase>& /*who*/) { 50 // No matter which of the service objects has died, 51 // we need to run all the registered handlers and crash our process. 52 std::lock_guard<std::mutex> guard(mHandlersLock); 53 for (const auto& handler : mHandlers) { 54 handler.second(); 55 } 56 LOG_ALWAYS_FATAL("HAL server crashed, need to restart"); 57} 58 59} // namespace android 60