1 files changed, 123 insertions, 0 deletions
diff --git a/src/VBox/Runtime/include/internal/fileaio.h b/src/VBox/Runtime/include/internal/fileaio.h
new file mode 100644
index 00000000..cbfb5e4f
--- /dev/null
+++ b/src/VBox/Runtime/include/internal/fileaio.h
@@ -0,0 +1,123 @@
+/* $Id: fileaio.h $ */
+/** @file
+ * IPRT - Internal RTFileAio header.
+ */
+
+/*
+ * Copyright (C) 2009-2020 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 IPRT_INCLUDED_INTERNAL_fileaio_h
+#define IPRT_INCLUDED_INTERNAL_fileaio_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/file.h>
+#include "internal/magics.h"
+
+/*******************************************************************************
+*   Structures and Typedefs                                                    *
+*******************************************************************************/
+/**
+ * Defined request states.
+ */
+typedef enum RTFILEAIOREQSTATE
+{
+    /** Prepared. */
+    RTFILEAIOREQSTATE_PREPARED = 0,
+    /** Submitted. */
+    RTFILEAIOREQSTATE_SUBMITTED,
+    /** Completed. */
+    RTFILEAIOREQSTATE_COMPLETED,
+    /** Omni present 32bit hack. */
+    RTFILEAIOREQSTATE_32BIT_HACK = 0x7fffffff
+} RTFILEAIOREQSTATE;
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+
+/** Return true if the specified request is not valid, false otherwise. */
+#define RTFILEAIOREQ_IS_NOT_VALID(pReq) \
+    (RT_UNLIKELY(!VALID_PTR(pReq) || (pReq->u32Magic != RTFILEAIOREQ_MAGIC)))
+
+/** Validates a context handle and returns VERR_INVALID_HANDLE if not valid. */
+#define RTFILEAIOREQ_VALID_RETURN_RC(pReq, rc) \
+    do { \
+        AssertPtrReturn((pReq), (rc)); \
+        AssertReturn((pReq)->u32Magic == RTFILEAIOREQ_MAGIC, (rc)); \
+    } while (0)
+
+/** Validates a context handle and returns VERR_INVALID_HANDLE if not valid. */
+#define RTFILEAIOREQ_VALID_RETURN(pReq) RTFILEAIOREQ_VALID_RETURN_RC((pReq), VERR_INVALID_HANDLE)
+
+/** Validates a context handle and returns (void) if not valid. */
+#define RTFILEAIOREQ_VALID_RETURN_VOID(pReq) \
+    do { \
+        AssertPtrReturnVoid(pReq); \
+        AssertReturnVoid((pReq)->u32Magic == RTFILEAIOREQ_MAGIC); \
+    } while (0)
+
+/** Validates a context handle and returns the specified rc if not valid. */
+#define RTFILEAIOCTX_VALID_RETURN_RC(pCtx, rc) \
+    do { \
+        AssertPtrReturn((pCtx), (rc)); \
+        AssertReturn((pCtx)->u32Magic == RTFILEAIOCTX_MAGIC, (rc)); \
+    } while (0)
+
+/** Validates a context handle and returns VERR_INVALID_HANDLE if not valid. */
+#define RTFILEAIOCTX_VALID_RETURN(pCtx) RTFILEAIOCTX_VALID_RETURN_RC((pCtx), VERR_INVALID_HANDLE)
+
+/** Checks if a request is in the specified state and returns the specified rc if not. */
+#define RTFILEAIOREQ_STATE_RETURN_RC(pReq, State, rc) \
+    do { \
+        if (RT_UNLIKELY(pReq->enmState != RTFILEAIOREQSTATE_##State)) \
+            return rc; \
+    } while (0)
+
+/** Checks if a request is not in the specified state and returns the specified rc if it is. */
+#define RTFILEAIOREQ_NOT_STATE_RETURN_RC(pReq, State, rc) \
+    do { \
+        if (RT_UNLIKELY(pReq->enmState == RTFILEAIOREQSTATE_##State)) \
+            return rc; \
+    } while (0)
+
+/** Checks if a request in the given states and sserts if not. */
+#define RTFIELAIOREQ_ASSERT_STATE(pReq, State) \
+    do { \
+        AssertPtr((pReq)); \
+        Assert((pReq)->u32Magic == RTFILEAIOREQ_MAGIC); \
+        Assert((pReq)->enmState == RTFILEAIOREQSTATE_##State); \
+    } while (0)
+
+/** Sets the request into a specific state. */
+#define RTFILEAIOREQ_SET_STATE(pReq, State) \
+    do { \
+        pReq->enmState = RTFILEAIOREQSTATE_##State; \
+    } while (0)
+
+
+RT_C_DECLS_BEGIN
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_INTERNAL_fileaio_h */
+