/**

 * vim: set ts=4 :

 * =============================================================================

 * SourceMod

 * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.

 * =============================================================================

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, version 3.0, as published by the

 * Free Software Foundation.

 * 

 * This program is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program.  If not, see <http://www.gnu.org/licenses/>.

 *

 * As a special exception, AlliedModders LLC gives you permission to link the

 * code of this program (as well as its derivative works) to "Half-Life 2," the

 * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

 * by the Valve Corporation.  You must obey the GNU General Public License in

 * all respects for all other code used.  Additionally, AlliedModders LLC grants

 * this exception to all derivative works.  AlliedModders LLC defines further

 * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

 * or <http://www.sourcemod.net/license.php>.

 *

 * Version: $Id$

 */

#ifndef _INCLUDE_POSIXTHREADS_H_

#define _INCLUDE_POSIXTHREADS_H_

#include <pthread.h>

#include "IThreader.h"

using namespace SourceMod;

void *Posix_ThreadGate(void *param);

class PosixThreader : public IThreader

{

public:

	class ThreadHandle : public IThreadHandle

	{

		friend class PosixThreader;

		friend void *Posix_ThreadGate(void *param);

	public:

		ThreadHandle(IThreader *parent, IThread *run, const ThreadParams *params);

		virtual ~ThreadHandle();

	public:

		virtual bool WaitForThread();

		virtual void DestroyThis();

		virtual IThreadCreator *Parent();

		virtual void GetParams(ThreadParams *ptparams);

		virtual ThreadPriority GetPriority();

		virtual bool SetPriority(ThreadPriority prio);

		virtual ThreadState GetState();

		virtual bool Unpause();

	protected:

		IThreader *m_parent;		//Parent handle

		pthread_t m_thread;			//Windows HANDLE	

		ThreadParams m_params;		//Current Parameters

		IThread *m_run;	//Runnable context

		pthread_mutex_t m_statelock;

		pthread_mutex_t m_runlock;

		ThreadState m_state;		//internal state

	};

	class PosixMutex : public IMutex

	{

	public:

		PosixMutex(pthread_mutex_t m) : m_mutex(m)

		{

		};

		virtual ~PosixMutex();

	public:

		virtual bool TryLock();

		virtual void Lock();

		virtual void Unlock();

		virtual void DestroyThis();

	protected:

		pthread_mutex_t m_mutex;

	};

	class PosixEventSignal : public IEventSignal

	{

	public:

		PosixEventSignal();

		virtual ~PosixEventSignal();

	public:

		virtual void Wait();

		virtual void Signal();

		virtual void DestroyThis();

	protected:

		pthread_cond_t m_cond;

		pthread_mutex_t m_mutex;

	};

public:

	IMutex *MakeMutex();

	void MakeThread(IThread *pThread);

	IThreadHandle *MakeThread(IThread *pThread, ThreadFlags flags);

	IThreadHandle *MakeThread(IThread *pThread, const ThreadParams *params);

	void GetPriorityBounds(ThreadPriority &max, ThreadPriority &min);

	void ThreadSleep(unsigned int ms);

	IEventSignal *MakeEventSignal();

	IThreadWorker *MakeWorker(IThreadWorkerCallbacks *hooks, bool threaded);

	void DestroyWorker(IThreadWorker *pWorker);

};

#if defined SM_DEFAULT_THREADER && !defined SM_MAIN_THREADER

#define SM_MAIN_THREADER PosixThreader;

typedef class PosixThreader MainThreader;

#endif

#endif //_INCLUDE_POSIXTHREADS_H_