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/** @file
* PDM - Pluggable Device Manager, Read/Write Critical Section.
*/
/*
* Copyright (C) 2006-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef VBOX_INCLUDED_vmm_pdmcritsectrw_h
#define VBOX_INCLUDED_vmm_pdmcritsectrw_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/types.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_pdm_critsectrw The PDM Read/Write Critical Section API
* @ingroup grp_pdm
* @{
*/
/**
* A PDM read/write critical section.
* Initialize using PDMDRVHLP::pfnCritSectRwInit().
*/
typedef union PDMCRITSECTRW
{
/** Padding. */
uint8_t padding[HC_ARCH_BITS == 32 ? 0xc0 : 0x100];
#ifdef PDMCRITSECTRWINT_DECLARED
/** The internal structure (not normally visible). */
struct PDMCRITSECTRWINT s;
#endif
} PDMCRITSECTRW;
VMMR3DECL(int) PDMR3CritSectRwInit(PVM pVM, PPDMCRITSECTRW pCritSect, RT_SRC_POS_DECL,
const char *pszNameFmt, ...) RT_IPRT_FORMAT_ATTR(6, 7);
VMMR3DECL(int) PDMR3CritSectRwDelete(PVM pVM, PPDMCRITSECTRW pCritSect);
VMMR3DECL(const char *) PDMR3CritSectRwName(PCPDMCRITSECTRW pCritSect);
VMMR3DECL(int) PDMR3CritSectRwEnterSharedEx(PVM pVM, PPDMCRITSECTRW pThis, bool fCallRing3);
VMMR3DECL(int) PDMR3CritSectRwEnterExclEx(PVM pVM, PPDMCRITSECTRW pThis, bool fCallRing3);
VMMDECL(int) PDMCritSectRwEnterShared(PVMCC pVM, PPDMCRITSECTRW pCritSect, int rcBusy);
VMMDECL(int) PDMCritSectRwEnterSharedDebug(PVMCC pVM, PPDMCRITSECTRW pCritSect, int rcBusy, RTHCUINTPTR uId, RT_SRC_POS_DECL);
VMMDECL(int) PDMCritSectRwTryEnterShared(PVMCC pVM, PPDMCRITSECTRW pCritSect);
VMMDECL(int) PDMCritSectRwTryEnterSharedDebug(PVMCC pVM, PPDMCRITSECTRW pCritSect, RTHCUINTPTR uId, RT_SRC_POS_DECL);
VMMDECL(int) PDMCritSectRwLeaveShared(PVMCC pVM, PPDMCRITSECTRW pCritSect);
VMMDECL(int) PDMCritSectRwEnterExcl(PVMCC pVM, PPDMCRITSECTRW pCritSect, int rcBusy);
VMMDECL(int) PDMCritSectRwEnterExclDebug(PVMCC pVM, PPDMCRITSECTRW pCritSect, int rcBusy, RTHCUINTPTR uId, RT_SRC_POS_DECL);
VMMDECL(int) PDMCritSectRwTryEnterExcl(PVMCC pVM, PPDMCRITSECTRW pCritSect);
VMMDECL(int) PDMCritSectRwTryEnterExclDebug(PVMCC pVM, PPDMCRITSECTRW pCritSect, RTHCUINTPTR uId, RT_SRC_POS_DECL);
VMMDECL(int) PDMCritSectRwLeaveExcl(PVMCC pVM, PPDMCRITSECTRW pCritSect);
VMMDECL(bool) PDMCritSectRwIsWriteOwner(PVMCC pVM, PPDMCRITSECTRW pCritSect);
VMMDECL(bool) PDMCritSectRwIsReadOwner(PVMCC pVM, PPDMCRITSECTRW pCritSect, bool fWannaHear);
VMMDECL(uint32_t) PDMCritSectRwGetWriteRecursion(PPDMCRITSECTRW pCritSect);
VMMDECL(uint32_t) PDMCritSectRwGetWriterReadRecursion(PPDMCRITSECTRW pCritSect);
VMMDECL(uint32_t) PDMCritSectRwGetReadCount(PPDMCRITSECTRW pCritSect);
VMMDECL(bool) PDMCritSectRwIsInitialized(PCPDMCRITSECTRW pCritSect);
/* Lock strict build: Remap the three enter calls to the debug versions. */
#ifdef VBOX_STRICT
# ifdef IPRT_INCLUDED_asm_h
# define PDMCritSectRwEnterExcl(a_pVM, pCritSect, rcBusy) PDMCritSectRwEnterExclDebug((a_pVM), pCritSect, rcBusy, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
# define PDMCritSectRwTryEnterExcl(a_pVM, pCritSect) PDMCritSectRwTryEnterExclDebug((a_pVM), pCritSect, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
# define PDMCritSectRwEnterShared(a_pVM, pCritSect, rcBusy) PDMCritSectRwEnterSharedDebug((a_pVM), pCritSect, rcBusy, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
# define PDMCritSectRwTryEnterShared(a_pVM, pCritSect) PDMCritSectRwTryEnterSharedDebug((a_pVM), pCritSect, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
# else
# define PDMCritSectRwEnterExcl(a_pVM, pCritSect, rcBusy) PDMCritSectRwEnterExclDebug((a_pVM), pCritSect, rcBusy, 0, RT_SRC_POS)
# define PDMCritSectRwTryEnterExcl(a_pVM, pCritSect) PDMCritSectRwTryEnterExclDebug((a_pVM), pCritSect, 0, RT_SRC_POS)
# define PDMCritSectRwEnterShared(a_pVM, pCritSect, rcBusy) PDMCritSectRwEnterSharedDebug((a_pVM), pCritSect, rcBusy, 0, RT_SRC_POS)
# define PDMCritSectRwTryEnterShared(a_pVM, pCritSect) PDMCritSectRwTryEnterSharedDebug((a_pVM), pCritSect, 0, RT_SRC_POS)
# endif
#endif
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmcritsectrw_h */
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