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/*******************************************************************************
* Copyright (C) 2004-2008 Intel Corp. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* - Neither the name of Intel Corp. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Intel Corp. OR THE CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/
//////////////////////////////////////////////////////////////////////////
// Thread.h
//
// This file contains an OS independent interface for thread manipulation
// A Thread class is defined for easy usage.
//
// Usage:
//
// Option 1: Construct an instance of the "Thread" class with an external
// callback function. When calling the "start" method, the thread will be
// started on the callback function
//
// Option 2: Subclass the "Thread" class and reimplement the virtual "run"
// method. When calling the "start" method, the thread will be started
// on the "run" function.
//
// Implementation overview:
// Calling the "start" method will start the new thread, which will call the
// "run" method. The default implementation of the "run" method will call
// the Callback function given in the constructor.
//
//////////////////////////////////////////////////////////////////////////
#ifndef _LAD_THREAD_H
#define _LAD_THREAD_H
#ifndef WAIT_INFINITE
#define WAIT_INFINITE 0xffffffff
#endif
#ifndef NULL
#define NULL 0
#endif
typedef void (*CallbackFunction) (void *);
class OSThread;
class Thread
{
friend class OSThread;
public:
Thread(CallbackFunction func = NULL, void *param = NULL);
Thread(const Thread &rhs);
virtual ~Thread();
// wait for the thread to complete; return true if the thread completed,
// false on timeout
bool wait(unsigned long msecs = WAIT_INFINITE) const;
// start the new thread, return true on success
bool start();
// true if the thread is in running state
bool running() const;
// measure the time (in msecs) from thread start-time
long elapsedTime() const;
// return ID for the current thread
static unsigned long currentThread();
// put the current thread to sleep
static void msleep(long msecs);
Thread &operator=(const Thread &rhs);
protected:
virtual void run();
private:
CallbackFunction _func;
void *_param;
long _startTime;
OSThread *_osThread;
};
#endif //_LAD_THREAD_H
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