87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
/*
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* Copyright (C) 2022 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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#define LOG_TAG "MDnsEventReporter"
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#include "MDnsEventReporter.h"
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using android::IInterface;
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using android::sp;
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using android::net::mdns::aidl::IMDnsEventListener;
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MDnsEventReporter& MDnsEventReporter::getInstance() {
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// It should be initialized only once.
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static MDnsEventReporter instance;
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return instance;
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}
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const MDnsEventReporter::EventListenerSet& MDnsEventReporter::getEventListeners() const {
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return getEventListenersImpl();
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}
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int MDnsEventReporter::addEventListener(const sp<IMDnsEventListener>& listener) {
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return addEventListenerImpl(listener);
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}
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int MDnsEventReporter::removeEventListener(const sp<IMDnsEventListener>& listener) {
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return removeEventListenerImpl(listener);
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}
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const MDnsEventReporter::EventListenerSet& MDnsEventReporter::getEventListenersImpl() const {
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std::lock_guard lock(mMutex);
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return mEventListeners;
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}
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int MDnsEventReporter::addEventListenerImpl(const sp<IMDnsEventListener>& listener) {
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if (listener == nullptr) {
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ALOGE("The event listener should not be null");
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return -EINVAL;
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}
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std::lock_guard lock(mMutex);
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for (const auto& it : mEventListeners) {
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if (IInterface::asBinder(it->getListener()).get() == IInterface::asBinder(listener).get()) {
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ALOGW("The event listener was already subscribed");
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return -EEXIST;
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}
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}
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auto eventListener = sp<EventListener>::make(this, listener);
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IInterface::asBinder(listener)->linkToDeath(eventListener);
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mEventListeners.insert(eventListener);
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return 0;
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}
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int MDnsEventReporter::removeEventListenerImpl(const sp<IMDnsEventListener>& listener) {
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if (listener == nullptr) {
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ALOGE("The event listener should not be null");
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return -EINVAL;
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}
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std::lock_guard lock(mMutex);
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for (const auto& it : mEventListeners) {
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const auto& binder = IInterface::asBinder(it->getListener());
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if (binder == IInterface::asBinder(listener)) {
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binder->unlinkToDeath(it);
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mEventListeners.erase(it);
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return 0;
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}
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}
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ALOGE("The event listener does not exist");
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return -ENOENT;
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} |