solaristhreads.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: solaristhreads.h,v 1.2.2.3 2004/07/09 01:43:45 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
 * are subject to the current version of the RealNetworks Public
 * Source License (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
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 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
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 * "GPL") in which case the provisions of the GPL are applicable
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 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
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 * ***** END LICENSE BLOCK ***** */

#ifndef _SOLARISTHREADSH
#define _SOLARISTHREADSH

#include "UnixThreads.h"


// forward declare
class HXSolarisCondition;

//=======================================================================
//
//                      HXSolarisMutex
//                   ------------------
//
// NOTE: Mutexs must be recursive.
//=======================================================================
class HXSolarisMutex : public HXUnixMutex
{
  public:
    //Ctors and dtors.
    HXSolarisMutex();
    virtual ~HXSolarisMutex();

    friend class HXSolarisCondition;

protected:
    //Must be recursive
    virtual HX_RESULT _Lock();
    virtual HX_RESULT _Unlock();
    virtual HX_RESULT _TryLock();
    
    mutex_t* _GetSolarisMutex() { return &m_mutex; }

private:

    mutex_t m_mutex;

    //These are used to simulate recursive mutexes on systems that don't
    //have them.
    ULONG32  m_ulOwnerThread;
    ULONG32  m_ulLockCount;
    mutex_t  m_mtxLockLock; //A mutex to protect the mutex!

    //Prevent unintentional ctors
    HXSolarisMutex( const HXSolarisMutex& ); //copy ctor
    HXSolarisMutex& operator=(const HXSolarisMutex& ); //assignment operator.
};


//=======================================================================
//
//                      HXSolarisSemaphore
//                   ------------------
//
//=======================================================================
class HXSolarisSemaphore : public HXUnixSemaphore
{
  public:
    //Ctors and dtors.
    HXSolarisSemaphore(UINT32 unInitialCount=0);
    virtual ~HXSolarisSemaphore();
        
protected:

    virtual HX_RESULT _Post();
    virtual HX_RESULT _Wait();
    virtual HX_RESULT _TryWait();
    virtual HX_RESULT _GetValue(int* pnCount );

private:

    sema_t m_semaphore;
    
    //Prevent unintentional ctors
    HXSolarisSemaphore( const HXSolarisSemaphore& ); //copy ctor
    HXSolarisSemaphore& operator=(const HXSolarisSemaphore& ); //assignment operator.
};


//=======================================================================
//
//                    HXSolarisThread    
//                   ------------------
//
//=======================================================================
class HXSolarisThread : public HXUnixThread
{
  public:
    HXSolarisThread();
    virtual ~HXSolarisThread();

protected:

    //
    // Pure virtuals that implement the OS specific chores.
    //
    virtual HX_RESULT _thread_create( ULONG32& ulThreadID, void*(pfExecFunc(void*)), void* pArg );
    virtual ULONG32   _thread_self();
    virtual void      _thread_exit(UINT32 unExitCode);
    virtual void      _thread_cancel(ULONG32 ulThreadID);
    virtual ULONG32   _thread_join(ULONG32 ulThreadID);
    
private:

    //Prevent unintentional ctors
    HXSolarisThread( const HXSolarisThread& ); //copy ctor
    HXSolarisThread& operator=(const HXSolarisThread&); //assignment operator.
};


class HXSolarisCondition : public HXUnixCondition
{
public:
    HXSolarisCondition(HXUnixMutex*& pMutex);
    virtual ~HXSolarisCondition();

protected:
    virtual HX_RESULT _Wait();
    virtual HX_RESULT _TimedWait( UINT32 uTimeoutPeriod = ALLFS);
    virtual HX_RESULT _Broadcast();
    virtual HX_RESULT _Signal();

private:

    HXSolarisMutex* m_pMutex;
    cond_t   m_cond;

    //Protect unintentional ctors
    HXSolarisCondition( const HXSolarisCondition& ); //copy ctor.
    HXSolarisCondition& operator=(const HXSolarisCondition& ); //assignment oper.
};


#endif //_SOLARISTHREADSH