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Diffstat (limited to 'include/VBox/vmm/pdmcritsect.h')
| -rw-r--r-- | include/VBox/vmm/pdmcritsect.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/include/VBox/vmm/pdmcritsect.h b/include/VBox/vmm/pdmcritsect.h new file mode 100644 index 00000000..99c9731b --- /dev/null +++ b/include/VBox/vmm/pdmcritsect.h @@ -0,0 +1,106 @@ +/** @file + * PDM - Pluggable Device Manager, Critical Sections. + */ + +/* + * Copyright (C) 2006-2020 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(PVMCPUCC 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(PVM pVM, 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, PVMCPUCC 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 */ + |