| 1 | /** $Id: VDIoBackendMem.h 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | *
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| 4 | * VBox HDD container test utility, async I/O memory backend
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2011-2022 Oracle and/or its affiliates.
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| 9 | *
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| 10 | * This file is part of VirtualBox base platform packages, as
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| 11 | * available from https://www.virtualbox.org.
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| 12 | *
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| 13 | * This program is free software; you can redistribute it and/or
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| 14 | * modify it under the terms of the GNU General Public License
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| 15 | * as published by the Free Software Foundation, in version 3 of the
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| 16 | * License.
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| 17 | *
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| 18 | * This program is distributed in the hope that it will be useful, but
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| 19 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 21 | * General Public License for more details.
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| 22 | *
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| 23 | * You should have received a copy of the GNU General Public License
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| 24 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 25 | *
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| 26 | * SPDX-License-Identifier: GPL-3.0-only
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| 27 | */
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| 28 |
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| 29 | #ifndef VBOX_INCLUDED_SRC_testcase_VDIoBackendMem_h
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| 30 | #define VBOX_INCLUDED_SRC_testcase_VDIoBackendMem_h
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| 31 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 32 | # pragma once
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| 33 | #endif
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| 34 |
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| 35 | #include <iprt/sg.h>
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| 36 |
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| 37 | #include "VDDefs.h"
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| 38 |
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| 39 | /** Memory backend handle. */
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| 40 | typedef struct VDIOBACKENDMEM *PVDIOBACKENDMEM;
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| 41 | /** Pointer to a memory backend handle. */
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| 42 | typedef PVDIOBACKENDMEM *PPVDIOBACKENDMEM;
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| 43 |
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| 44 | /**
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| 45 | * Completion handler.
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| 46 | *
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| 47 | * @returns nothing.
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| 48 | * @param pvUser Opaque user data.
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| 49 | * @param rcReq Completion code for the request.
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| 50 | */
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| 51 | typedef DECLCALLBACKTYPE(int, FNVDIOCOMPLETE,(void *pvUser, int rcReq));
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| 52 | /** Pointer to a completion handler. */
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| 53 | typedef FNVDIOCOMPLETE *PFNVDIOCOMPLETE;
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| 54 |
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| 55 | /**
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| 56 | * Creates a new memory I/O backend.
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| 57 | *
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| 58 | * @returns IPRT status code.
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| 59 | *
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| 60 | * @param ppIoBackend Where to store the handle on success.
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| 61 | */
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| 62 | int VDIoBackendMemCreate(PPVDIOBACKENDMEM ppIoBackend);
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| 63 |
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| 64 | /**
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| 65 | * Destroys a memory I/O backend.
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| 66 | *
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| 67 | * @returns IPRT status code.
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| 68 | *
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| 69 | * @param pIoBackend The backend to destroy.
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| 70 | */
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| 71 | int VDIoBackendMemDestroy(PVDIOBACKENDMEM pIoBackend);
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| 72 |
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| 73 | /**
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| 74 | * Enqueues a new I/O request.
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| 75 | *
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| 76 | * @returns IPRT status code.
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| 77 | *
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| 78 | * @param pIoBackend The backend which should handle the
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| 79 | * transfer.
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| 80 | * @param pMemDisk The memory disk the request is for.
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| 81 | * @param enmTxDir The transfer direction.
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| 82 | * @param off Start offset of the transfer.
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| 83 | * @param cbTransfer Size of the transfer.
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| 84 | * @param pSgBuf S/G buffer to use.
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| 85 | * @param pfnComplete Completion handler to call.
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| 86 | * @param pvUser Opaque user data.
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| 87 | */
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| 88 | int VDIoBackendMemTransfer(PVDIOBACKENDMEM pIoBackend, PVDMEMDISK pMemDisk,
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| 89 | VDIOTXDIR enmTxDir, uint64_t off, size_t cbTransfer,
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| 90 | PRTSGBUF pSgBuf, PFNVDIOCOMPLETE pfnComplete, void *pvUser);
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| 91 |
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| 92 | #endif /* !VBOX_INCLUDED_SRC_testcase_VDIoBackendMem_h */
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