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/** @file
* PDM - Pluggable Device Manager, Critical Sections.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* 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.
*/
#ifndef VBOX_INCLUDED_vmm_pdmcritsect_h
#define VBOX_INCLUDED_vmm_pdmcritsect_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/types.h>
#include <iprt/critsect.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_pdm_critsect The PDM Critical Section API
* @ingroup grp_pdm
* @{
*/
/**
* A PDM critical section.
* Initialize using PDMDRVHLP::pfnCritSectInit().
*/
typedef union PDMCRITSECT
{
/** Padding. */
uint8_t padding[HC_ARCH_BITS == 32 ? 0x80 : 0xc0];
#ifdef PDMCRITSECTINT_DECLARED
/** The internal structure (not normally visible). */
struct PDMCRITSECTINT s;
#endif
} PDMCRITSECT;
VMMR3_INT_DECL(int) PDMR3CritSectBothTerm(PVM pVM);
VMMR3_INT_DECL(void) PDMR3CritSectLeaveAll(PVM pVM);
VMM_INT_DECL(void) PDMCritSectBothFF(PVMCPU pVCpu);
VMMR3DECL(uint32_t) PDMR3CritSectCountOwned(PVM pVM, char *pszNames, size_t cbNames);
VMMR3DECL(int) PDMR3CritSectInit(PVM pVM, PPDMCRITSECT pCritSect, RT_SRC_POS_DECL,
const char *pszNameFmt, ...) RT_IPRT_FORMAT_ATTR(6, 7);
VMMR3DECL(int) PDMR3CritSectEnterEx(PPDMCRITSECT pCritSect, bool fCallRing3);
VMMR3DECL(bool) PDMR3CritSectYield(PPDMCRITSECT pCritSect);
VMMR3DECL(const char *) PDMR3CritSectName(PCPDMCRITSECT pCritSect);
VMMR3DECL(int) PDMR3CritSectDelete(PPDMCRITSECT pCritSect);
#if defined(IN_RING0) || defined(IN_RING3)
VMMDECL(int) PDMHCCritSectScheduleExitEvent(PPDMCRITSECT pCritSect, SUPSEMEVENT hEventToSignal);
#endif
VMMDECL(int) PDMCritSectEnter(PPDMCRITSECT pCritSect, int rcBusy);
VMMDECL(int) PDMCritSectEnterDebug(PPDMCRITSECT pCritSect, int rcBusy, RTHCUINTPTR uId, RT_SRC_POS_DECL);
VMMDECL(int) PDMCritSectTryEnter(PPDMCRITSECT pCritSect);
VMMDECL(int) PDMCritSectTryEnterDebug(PPDMCRITSECT pCritSect, RTHCUINTPTR uId, RT_SRC_POS_DECL);
VMMDECL(int) PDMCritSectLeave(PPDMCRITSECT pCritSect);
VMMDECL(bool) PDMCritSectIsOwner(PCPDMCRITSECT pCritSect);
VMMDECL(bool) PDMCritSectIsOwnerEx(PCPDMCRITSECT pCritSect, PVMCPU pVCpu);
VMMDECL(bool) PDMCritSectIsInitialized(PCPDMCRITSECT pCritSect);
VMMDECL(bool) PDMCritSectHasWaiters(PCPDMCRITSECT pCritSect);
VMMDECL(uint32_t) PDMCritSectGetRecursion(PCPDMCRITSECT pCritSect);
VMMR3DECL(PPDMCRITSECT) PDMR3CritSectGetNop(PVM pVM);
VMMR3DECL(R0PTRTYPE(PPDMCRITSECT)) PDMR3CritSectGetNopR0(PVM pVM);
VMMR3DECL(RCPTRTYPE(PPDMCRITSECT)) PDMR3CritSectGetNopRC(PVM pVM);
/* Strict build: Remap the two enter calls to the debug versions. */
#ifdef VBOX_STRICT
# ifdef IPRT_INCLUDED_asm_h
# define PDMCritSectEnter(pCritSect, rcBusy) PDMCritSectEnterDebug((pCritSect), (rcBusy), (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
# define PDMCritSectTryEnter(pCritSect) PDMCritSectTryEnterDebug((pCritSect), (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
# else
# define PDMCritSectEnter(pCritSect, rcBusy) PDMCritSectEnterDebug((pCritSect), (rcBusy), 0, RT_SRC_POS)
# define PDMCritSectTryEnter(pCritSect) PDMCritSectTryEnterDebug((pCritSect), 0, RT_SRC_POS)
# endif
#endif
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmcritsect_h */
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