oaSemaphore.h

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// *****************************************************************************
// *****************************************************************************
// oaSemaphore.h
//
// This file contains the definitions for the oaSemaphore class.
//
// oaSemaphore:
//  The class represent the rights to an inter-process mutex.  Having the
//  mutex object successfully constructed means you have the rights to the
//  mutex.  The right of the mutex is not release until the object is destroyed.
//
// *****************************************************************************
// Except as specified in the OpenAccess terms of use of Cadence or Silicon
// Integration Initiative, this material may not be copied, modified,
// re-published, uploaded, executed, or distributed in any way, in any medium,
// in whole or in part, without prior written permission from Cadence.
//
//                Copyright 2003-2005 Cadence Design Systems, Inc.
//                           All Rights Reserved.
//
//  $Author: icftcm $
//  $Revision: #1 $
//  $Date: 2010/08/09 $
//  $State: Exp $
// *****************************************************************************
// *****************************************************************************



#if !defined(oaSemaphore_P)
#define oaSemaphore_P



// *****************************************************************************
// Nested includes
// *****************************************************************************
#include "oaBaseTypes.h"

#if defined(OA_WINDOWS)
#include <WinSock2.h>
#include <Windows.h>
#else
#include <dlfcn.h>
#endif
#if defined(HPUX)
#include <dl.h>
#endif



// *****************************************************************************
// Declare and define types in the OpenAccess namespace.
// *****************************************************************************
BEGIN_OA_NAMESPACE



#if !defined(OA_WINDOWS)
typedef oaInt4              HANDLE;
#endif



// *****************************************************************************
// oaSemaphore
// *****************************************************************************
class OA_BASE_DLL_API oaSemaphore {
public:
    oaSemaphore(oaUInt4 key);
    ~oaSemaphore();

    oaBoolean               acquire(oaBoolean noWait = true);
    void                    release();
    oaBoolean               isAcquired();

private:
    oaUInt4                 key;
    HANDLE                  handle;
    oaBoolean               acquired;
};



END_OA_NAMESPACE

#endif

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