Adding upstream version 6.1.22-dfsg.upstream/6.1.22-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 101 insertions, 0 deletions

diff --git a/include/VBox/vmm/pdmcritsectrw.h b/include/VBox/vmm/pdmcritsectrw.h
new file mode 100644
index 00000000..ac667842
--- /dev/null
+++ b/include/VBox/vmm/pdmcritsectrw.h
@@ -0,0 +1,101 @@
+/** @file
+ * PDM - Pluggable Device Manager, Read/Write Critical Section.
+ */
+
+/*
+ * 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_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(PPDMCRITSECTRW pCritSect);
+VMMR3DECL(const char *) PDMR3CritSectRwName(PCPDMCRITSECTRW pCritSect);
+VMMR3DECL(int)      PDMR3CritSectRwEnterSharedEx(PPDMCRITSECTRW pThis, bool fCallRing3);
+VMMR3DECL(int)      PDMR3CritSectRwEnterExclEx(PPDMCRITSECTRW pThis, bool fCallRing3);
+
+VMMDECL(int)        PDMCritSectRwEnterShared(PPDMCRITSECTRW pCritSect, int rcBusy);
+VMMDECL(int)        PDMCritSectRwEnterSharedDebug(PPDMCRITSECTRW pCritSect, int rcBusy, RTHCUINTPTR uId, RT_SRC_POS_DECL);
+VMMDECL(int)        PDMCritSectRwTryEnterShared(PPDMCRITSECTRW pCritSect);
+VMMDECL(int)        PDMCritSectRwTryEnterSharedDebug(PPDMCRITSECTRW pCritSect, RTHCUINTPTR uId, RT_SRC_POS_DECL);
+VMMDECL(int)        PDMCritSectRwLeaveShared(PPDMCRITSECTRW pCritSect);
+VMMDECL(int)        PDMCritSectRwEnterExcl(PPDMCRITSECTRW pCritSect, int rcBusy);
+VMMDECL(int)        PDMCritSectRwEnterExclDebug(PPDMCRITSECTRW pCritSect, int rcBusy, RTHCUINTPTR uId, RT_SRC_POS_DECL);
+VMMDECL(int)        PDMCritSectRwTryEnterExcl(PPDMCRITSECTRW pCritSect);
+VMMDECL(int)        PDMCritSectRwTryEnterExclDebug(PPDMCRITSECTRW pCritSect, RTHCUINTPTR uId, RT_SRC_POS_DECL);
+VMMDECL(int)        PDMCritSectRwLeaveExcl(PPDMCRITSECTRW pCritSect);
+
+VMMDECL(bool)       PDMCritSectRwIsWriteOwner(PPDMCRITSECTRW pCritSect);
+VMMDECL(bool)       PDMCritSectRwIsReadOwner(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(pCritSect, rcBusy)     PDMCritSectRwEnterExclDebug(pCritSect, rcBusy, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
+#  define PDMCritSectRwTryEnterExcl(pCritSect)          PDMCritSectRwTryEnterExclDebug(pCritSect, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
+#  define PDMCritSectRwEnterShared(pCritSect, rcBusy)   PDMCritSectRwEnterSharedDebug(pCritSect, rcBusy, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
+#  define PDMCritSectRwTryEnterShared(pCritSect)        PDMCritSectRwTryEnterSharedDebug(pCritSect, (uintptr_t)ASMReturnAddress(), RT_SRC_POS)
+# else
+#  define PDMCritSectRwEnterExcl(pCritSect, rcBusy)     PDMCritSectRwEnterExclDebug(pCritSect, rcBusy, 0, RT_SRC_POS)
+#  define PDMCritSectRwTryEnterExcl(pCritSect)          PDMCritSectRwTryEnterExclDebug(pCritSect, 0, RT_SRC_POS)
+#  define PDMCritSectRwEnterShared(pCritSect, rcBusy)   PDMCritSectRwEnterSharedDebug(pCritSect, rcBusy, 0, RT_SRC_POS)
+#  define PDMCritSectRwTryEnterShared(pCritSect)        PDMCritSectRwTryEnterSharedDebug(pCritSect, 0, RT_SRC_POS)
+# endif
+#endif
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !VBOX_INCLUDED_vmm_pdmcritsectrw_h */
+