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/** @file
 * PDM - Pluggable Device Manager, Critical Sections.

 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
 * VirtualBox OSE distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 USA or visit http://www.sun.com if you need
 * additional information or have any questions.

#ifndef ___VBox_pdmcritsect_h
#define ___VBox_pdmcritsect_h

#include <VBox/types.h>
#include <iprt/critsect.h>


/** @defgroup grp_pdm_critsect      The PDM Critical Section API
 * @ingroup grp_pdm
 * @{

 * A PDM critical section.
 * Initialize using PDMDRVHLP::pfnCritSectInit().
00047 typedef union PDMCRITSECT
    /** Padding. */
00050     uint8_t padding[HC_ARCH_BITS == 64 ? 0xb8 : 0x88];
    /** The internal structure (not normally visible). */
    struct PDMCRITSECTINT s;
/** Pointer to a PDM critical section. */
/** Pointer to a const PDM critical section. */

VMMR3DECL(int)  PDMR3CritSectInit(PVM pVM, PPDMCRITSECT pCritSect, const char *pszName);
VMMDECL(int)    PDMCritSectEnter(PPDMCRITSECT pCritSect, int rcBusy);
VMMR3DECL(int)  PDMR3CritSectEnterEx(PPDMCRITSECT pCritSect, bool fCallHost);
VMMDECL(void)   PDMCritSectLeave(PPDMCRITSECT pCritSect);
VMMDECL(bool)   PDMCritSectIsOwner(PCPDMCRITSECT pCritSect);
VMMDECL(bool)   PDMCritSectIsInitialized(PCPDMCRITSECT pCritSect);
VMMR3DECL(int)  PDMR3CritSectTryEnter(PPDMCRITSECT pCritSect);
VMMR3DECL(int)  PDMR3CritSectScheduleExitEvent(PPDMCRITSECT pCritSect, RTSEMEVENT EventToSignal);
VMMR3DECL(int)  PDMR3CritSectDelete(PPDMCRITSECT pCritSect);
VMMDECL(int)    PDMR3CritSectTerm(PVM pVM);

/** @} */



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