mirror of
https://github.com/mangosfour/server.git
synced 2025-12-12 10:37:03 +00:00
111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2005, Eric Crahen
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is furnished
|
|
* to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
|
|
#ifndef __ZTPRIORITYSEMAPHORE_H__
|
|
#define __ZTPRIORITYSEMAPHORE_H__
|
|
|
|
#include "zthread/Lockable.h"
|
|
#include "zthread/NonCopyable.h"
|
|
|
|
namespace ZThread {
|
|
|
|
class PrioritySemaphoreImpl;
|
|
|
|
/**
|
|
* @class PrioritySemaphore
|
|
* @author Eric Crahen <http://www.code-foo.com>
|
|
* @date <2003-07-16T15:36:07-0400>
|
|
* @version 2.2.1
|
|
*
|
|
* A PrioritySemaphore operates in the same way as a Semaphore. Its an owner-less
|
|
* Lockable object that is sensitive to priority.
|
|
*
|
|
* <b>Scheduling</b>
|
|
*
|
|
* Threads blocked on a PrioritySemaphore are resumed in priority order, highest
|
|
* priority first.
|
|
*
|
|
* <b>Error Checking</b>
|
|
*
|
|
* An attempt to increase a PrioritySemaphore beyond its maximum value will result in
|
|
* an InvalidOp_Exception.
|
|
*
|
|
* @see Semaphore
|
|
*/
|
|
class ZTHREAD_API PrioritySemaphore : public Lockable, private NonCopyable {
|
|
|
|
PrioritySemaphoreImpl* _impl;
|
|
|
|
public:
|
|
|
|
/**
|
|
* @see Semaphore::Semaphore(int count, unsigned int maxCount)
|
|
*/
|
|
PrioritySemaphore(int count = 1, unsigned int maxCount = 1);
|
|
|
|
/**
|
|
* @see Semaphore::~Semaphore()
|
|
*/
|
|
virtual ~PrioritySemaphore();
|
|
|
|
/**
|
|
* @see Semaphore::wait()
|
|
*/
|
|
void wait();
|
|
|
|
/**
|
|
* @see Semaphore::tryWait(unsigned long)
|
|
*/
|
|
bool tryWait(unsigned long);
|
|
|
|
/**
|
|
* @see Semaphore::post()
|
|
*/
|
|
void post();
|
|
|
|
/**
|
|
* @see Semaphore::count()
|
|
*/
|
|
virtual int count();
|
|
|
|
/**
|
|
* @see Semaphore::tryAcquire(unsigned long timeout)
|
|
*/
|
|
virtual bool tryAcquire(unsigned long timeout);
|
|
|
|
/**
|
|
* @see Semaphore::acquire()
|
|
*/
|
|
virtual void acquire();
|
|
|
|
/**
|
|
* @see Semaphore::release()
|
|
*/
|
|
virtual void release();
|
|
|
|
};
|
|
|
|
|
|
} // namespace ZThread
|
|
|
|
#endif // __ZTPRIORITYSEMAPHORE_H__
|