60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/*
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* Copyright (C) 2017 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 ANDROID_HARDWARE_BROADCASTRADIO_V1_1_CALL_BARRIER
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#define ANDROID_HARDWARE_BROADCASTRADIO_V1_1_CALL_BARRIER
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#include <chrono>
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#include <thread>
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namespace android {
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namespace hardware {
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namespace broadcastradio {
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namespace vts {
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/**
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* A barrier for thread synchronization, where one should wait for another to
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* reach a specific point in execution.
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*/
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class CallBarrier {
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public:
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/**
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* Notify the other thread it may continue execution.
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*
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* This may be called before the other thread starts waiting on the barrier.
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*/
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void call();
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/**
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* Wait for the other thread to reach call() execution point.
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*
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* @param timeout a maximum time to wait.
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* @returns {@code false} if timed out, {@code true} otherwise.
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*/
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bool waitForCall(std::chrono::milliseconds timeout);
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private:
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bool mWasCalled = false;
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std::mutex mMut;
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std::condition_variable mCond;
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};
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} // namespace vts
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} // namespace broadcastradio
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} // namespace hardware
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} // namespace android
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#endif // ANDROID_HARDWARE_BROADCASTRADIO_V1_1_CALL_BARRIER
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