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Diffstat (limited to 'include/VBox/vmm/pdmcritsectrw.h')
| -rw-r--r-- | include/VBox/vmm/pdmcritsectrw.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/include/VBox/vmm/pdmcritsectrw.h b/include/VBox/vmm/pdmcritsectrw.h new file mode 100644 index 00000000..8b3eb319 --- /dev/null +++ b/include/VBox/vmm/pdmcritsectrw.h @@ -0,0 +1,111 @@ +/** @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 */ + |