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68 lines
2.5 KiB
68 lines
2.5 KiB
/* |
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* Copyright (C) 2018 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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#ifndef NETD_RESOLV_EVENT_REPORTER_H |
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#define NETD_RESOLV_EVENT_REPORTER_H |
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#include <set> |
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#include <android-base/thread_annotations.h> |
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#include "aidl/android/net/metrics/INetdEventListener.h" |
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/* |
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* This class can be used to get the binder reference to the netd events listener service |
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* via stable runtime ABI which is achieved from libbinder_ndk. It also allows that |
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* register an event listener. |
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*/ |
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class ResolverEventReporter { |
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public: |
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ResolverEventReporter(ResolverEventReporter const&) = delete; |
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ResolverEventReporter(ResolverEventReporter&&) = delete; |
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ResolverEventReporter& operator=(ResolverEventReporter const&) = delete; |
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ResolverEventReporter& operator=(ResolverEventReporter&&) = delete; |
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using ListenerSet = std::set<std::shared_ptr<aidl::android::net::metrics::INetdEventListener>>; |
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// Get the instance of the singleton ResolverEventReporter. |
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static ResolverEventReporter& getInstance(); |
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// Return the binder from the singleton ResolverEventReporter. This method is threadsafe. |
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ListenerSet getListeners() const; |
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// Add the binder to the singleton ResolverEventReporter. This method is threadsafe. |
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int addListener( |
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const std::shared_ptr<aidl::android::net::metrics::INetdEventListener>& listener); |
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private: |
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ResolverEventReporter() = default; |
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~ResolverEventReporter() = default; |
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void addDefaultListener() EXCLUDES(mMutex); |
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int addListenerImpl( |
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const std::shared_ptr<aidl::android::net::metrics::INetdEventListener>& listener) |
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EXCLUDES(mMutex); |
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int addListenerImplLocked( |
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const std::shared_ptr<aidl::android::net::metrics::INetdEventListener>& listener) |
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REQUIRES(mMutex); |
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ListenerSet getListenersImpl() const EXCLUDES(mMutex); |
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void handleBinderDied(const void* who) EXCLUDES(mMutex); |
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mutable std::mutex mMutex; |
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ListenerSet mListeners GUARDED_BY(mMutex); |
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}; |
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#endif // NETD_RESOLV_EVENT_REPORTER_H
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