67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <android-base/logging.h>
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#include <android/binder_ibinder.h>
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#include <health-impl/Health.h>
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#include <utils/Errors.h>
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#include "LinkedCallback.h"
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namespace aidl::android::hardware::health {
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std::unique_ptr<LinkedCallback> LinkedCallback::Make(
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std::shared_ptr<Health> service, std::shared_ptr<IHealthInfoCallback> callback) {
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std::unique_ptr<LinkedCallback> ret(new LinkedCallback());
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binder_status_t linkRet =
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AIBinder_linkToDeath(callback->asBinder().get(), service->death_recipient_.get(),
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reinterpret_cast<void*>(ret.get()));
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if (linkRet != ::STATUS_OK) {
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LOG(WARNING) << __func__ << "Cannot link to death: " << linkRet;
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return nullptr;
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}
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ret->service_ = service;
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ret->callback_ = std::move(callback);
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return ret;
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}
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LinkedCallback::LinkedCallback() = default;
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LinkedCallback::~LinkedCallback() {
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if (callback_ == nullptr) {
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return;
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}
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auto status =
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AIBinder_unlinkToDeath(callback_->asBinder().get(), service()->death_recipient_.get(),
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reinterpret_cast<void*>(this));
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if (status != STATUS_OK && status != STATUS_DEAD_OBJECT) {
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LOG(WARNING) << __func__ << "Cannot unlink to death: " << ::android::statusToString(status);
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}
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}
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std::shared_ptr<Health> LinkedCallback::service() {
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auto service_sp = service_.lock();
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CHECK_NE(nullptr, service_sp);
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return service_sp;
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}
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void LinkedCallback::OnCallbackDied() {
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service()->unregisterCallback(callback_);
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}
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} // namespace aidl::android::hardware::health
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