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