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49 lines
1.1 KiB
49 lines
1.1 KiB
7 months ago
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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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#ifndef CTSAUDIO_SEMAPHORE_H
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#define CTSAUDIO_SEMAPHORE_H
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#include <semaphore.h>
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#include <Log.h>
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/**
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* Simple semaphore interface for synchronization between client and server
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*/
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class Semaphore {
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public:
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explicit Semaphore(int count = 0);
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~Semaphore();
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/// down semaphore if it is already positive.
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void tryWait();
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bool wait();
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bool timedWait(int timeInMSec);
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void post();
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private:
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sem_t mSem;
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};
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#endif // CTSAUDIO_SEMAPHORE_H
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