64d876d96e
Test: this is only a test; manual run on a device Bug: 305979303 326470047 Change-Id: Idf4953e942bb5db8c2ee72779dfdf80ed4e224b2
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2012 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.
|
|
*/
|
|
|
|
/*
|
|
* Encapsulate a condition variable for thread synchronization.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <pthread.h>
|
|
|
|
#include <mutex>
|
|
|
|
class CondVar {
|
|
public:
|
|
/*******************************************************************************
|
|
**
|
|
** Function: CondVar
|
|
**
|
|
** Description: Initialize member variables.
|
|
**
|
|
** Returns: None.
|
|
**
|
|
*******************************************************************************/
|
|
CondVar();
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function: ~CondVar
|
|
**
|
|
** Description: Cleanup all resources.
|
|
**
|
|
** Returns: None.
|
|
**
|
|
*******************************************************************************/
|
|
~CondVar();
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function: wait
|
|
**
|
|
** Description: Block the caller and wait for a condition.
|
|
**
|
|
** Returns: None.
|
|
**
|
|
*******************************************************************************/
|
|
void wait(std::mutex& mutex);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function: wait
|
|
**
|
|
** Description: Block the caller and wait for a condition.
|
|
** millisec: Timeout in milliseconds.
|
|
**
|
|
** Returns: True if wait is successful; false if timeout occurs.
|
|
**
|
|
*******************************************************************************/
|
|
bool wait(std::mutex& mutex, long millisec);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function: notifyOne
|
|
**
|
|
** Description: Unblock the waiting thread.
|
|
**
|
|
** Returns: None.
|
|
**
|
|
*******************************************************************************/
|
|
void notifyOne();
|
|
|
|
private:
|
|
pthread_cond_t mCondition;
|
|
};
|