root/trunk/dep/include/zthread/ClassLockable.h @ 2

/*
 * 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 __ZTCLASSLOCKABLE_H__
#define __ZTCLASSLOCKABLE_H__

#include "zthread/CountedPtr.h"
#include "zthread/Mutex.h"

namespace ZThread { 

  /**
   * @class ClassLockable
   *
   * @author Eric Crahen <http://www.code-foo.com>
   * @date <2003-07-16T23:37:38-0400>
   * @version 2.3.0
   *
   *
   */
  template <typename ClassType, class LockType = Mutex>
    class ClassLockable : public Lockable {

    static CountedPtr<LockType> _instance;
    CountedPtr<LockType> _lock;

    public:  
  
    //! Create a ClassLockable
    ClassLockable() 
      : _lock(_instance) {} 
  
    //! acquire() the ClassLockable
    virtual void acquire() { 
      _lock->acquire(); 
    }

    //! tryAcquire() the ClassLockable
    virtual bool tryAcquire(unsigned long timeout) {
      return _lock->tryAcquire(timeout); 
    }

    //! release() the ClassLockable
    virtual void release() {
      _lock->release(); 
    }

  };

  template <typename ClassType, class LockType>
    CountedPtr<LockType> ClassLockable<ClassType, LockType>::_instance(new LockType);

} // namespace ZThread

#endif // __ZTCLASSLOCKABLE_H__