VirtualBox

source: vbox/trunk/src/VBox/Storage/testcase/VDIoBackendMem.h@ 67954

Last change on this file since 67954 was 62482, checked in by vboxsync, 8 years ago

(C) 2016

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.3 KB
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1/** $Id: VDIoBackendMem.h 62482 2016-07-22 18:30:37Z vboxsync $ */
2/** @file
3 *
4 * VBox HDD container test utility, async I/O memory backend
5 */
6
7/*
8 * Copyright (C) 2011-2016 Oracle Corporation
9 *
10 * This file is part of VirtualBox Open Source Edition (OSE), as
11 * available from http://www.virtualbox.org. This file is free software;
12 * you can redistribute it and/or modify it under the terms of the GNU
13 * General Public License (GPL) as published by the Free Software
14 * Foundation, in version 2 as it comes in the "COPYING" file of the
15 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17 */
18#ifndef __VDIoBackendMem_h__
19#define __VDIoBackendMem_h__
20
21#include <iprt/sg.h>
22
23#include "VDDefs.h"
24
25/** Memory backend handle. */
26typedef struct VDIOBACKENDMEM *PVDIOBACKENDMEM;
27/** Pointer to a memory backend handle. */
28typedef PVDIOBACKENDMEM *PPVDIOBACKENDMEM;
29
30/**
31 * Completion handler.
32 *
33 * @returns nothing.
34 * @param pvUser Opaque user data.
35 * @param rcReq Completion code for the request.
36 */
37typedef DECLCALLBACK(int) FNVDIOCOMPLETE(void *pvUser, int rcReq);
38/** Pointer to a completion handler. */
39typedef FNVDIOCOMPLETE *PFNVDIOCOMPLETE;
40
41/**
42 * Creates a new memory I/O backend.
43 *
44 * @returns IPRT status code.
45 *
46 * @param ppIoBackend Where to store the handle on success.
47 */
48int VDIoBackendMemCreate(PPVDIOBACKENDMEM ppIoBackend);
49
50/**
51 * Destroys a memory I/O backend.
52 *
53 * @returns IPRT status code.
54 *
55 * @param pIoBackend The backend to destroy.
56 */
57int VDIoBackendMemDestroy(PVDIOBACKENDMEM pIoBackend);
58
59/**
60 * Enqueues a new I/O request.
61 *
62 * @returns IPRT status code.
63 *
64 * @param pIoBackend The backend which should handle the
65 * transfer.
66 * @param pMemDisk The memory disk the request is for.
67 * @param enmTxDir The transfer direction.
68 * @param off Start offset of the transfer.
69 * @param cbTransfer Size of the transfer.
70 * @param pSgBuf S/G buffer to use.
71 * @param pfnComplete Completion handler to call.
72 * @param pvUser Opaque user data.
73 */
74int VDIoBackendMemTransfer(PVDIOBACKENDMEM pIoBackend, PVDMEMDISK pMemDisk,
75 VDIOTXDIR enmTxDir, uint64_t off, size_t cbTransfer,
76 PRTSGBUF pSgBuf, PFNVDIOCOMPLETE pfnComplete, void *pvUser);
77
78#endif /* __VDIoBackendMem_h__ */
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