/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (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.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

#ifndef nsThread_h__
#define nsThread_h__

#include "nsIRunnable.h"
#include "nsIThread.h"
#include "nsIThreadPool.h"
#include "nsISupportsArray.h"
#include "prcmon.h"
#include "nsCOMPtr.h"

class nsThread : public nsIThread 
{
public:
    NS_DECL_ISUPPORTS

    // nsIThread methods:
    NS_DECL_NSITHREAD
 
    // nsThread methods:
    nsThread();
    virtual ~nsThread();

    nsresult RegisterThreadSelf();
    void SetPRThread(PRThread* thread) { mThread = thread; }

    static void Main(void* arg);
    static void Exit(void* arg);
    static void Shutdown();

    static PRUintn kIThreadSelfIndex;

    static NS_METHOD Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);

protected:
    PRThread*                   mThread;
    nsCOMPtr<nsIRunnable>       mRunnable;
    PRBool                      mDead;
};

////////////////////////////////////////////////////////////////////////////////

class nsThreadPool : public nsIThreadPool
{
public:
    NS_DECL_ISUPPORTS

    // nsIThreadPool methods:
    NS_DECL_NSITHREADPOOL

    // nsThreadPool methods:
    nsThreadPool(PRUint32 minThreads, PRUint32 maxThreads);
    virtual ~nsThreadPool();

    nsIRunnable* GetRequest();

	static NS_METHOD Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
    
protected:
    nsCOMPtr<nsISupportsArray>  mThreads;
    nsCOMPtr<nsISupportsArray>  mRequests;
    PRMonitor*                  mRequestMonitor;
    PRUint32                    mMinThreads;
    PRUint32                    mMaxThreads;
    PRBool                      mShuttingDown;
};

////////////////////////////////////////////////////////////////////////////////

class nsThreadPoolRunnable : public nsIRunnable 
{
public:
    NS_DECL_ISUPPORTS

    // nsIRunnable methods:
    NS_DECL_NSIRUNNABLE

    // nsThreadPoolRunnable methods:
    nsThreadPoolRunnable(nsThreadPool* pool);
    virtual ~nsThreadPoolRunnable();

protected:
    nsThreadPool*       mPool;

};

////////////////////////////////////////////////////////////////////////////////

#endif // nsThread_h__