| 1 | /* $Id: tstRTFileAio.cpp 99775 2023-05-12 12:21:58Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT Testcase - File Async I/O.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include <iprt/file.h>
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| 42 |
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| 43 | #include <iprt/err.h>
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| 44 | #include <iprt/mem.h>
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| 45 | #include <iprt/param.h>
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| 46 | #include <iprt/string.h>
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| 47 | #include <iprt/test.h>
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| 48 |
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| 49 |
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| 50 | /*********************************************************************************************************************************
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| 51 | * Defined Constants And Macros *
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| 52 | *********************************************************************************************************************************/
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| 53 | /** @todo make configurable through cmd line. */
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| 54 | #define TSTFILEAIO_MAX_REQS_IN_FLIGHT 64
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| 55 | #define TSTFILEAIO_BUFFER_SIZE (64*_1K)
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| 56 |
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| 57 |
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| 58 | /*********************************************************************************************************************************
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| 59 | * Global Variables *
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| 60 | *********************************************************************************************************************************/
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| 61 | static RTTEST g_hTest = NIL_RTTEST;
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| 62 |
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| 63 |
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| 64 | static void tstFileAioTestReadWriteBasic(RTFILE File, bool fWrite, void *pvTestBuf,
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| 65 | size_t cbTestBuf, size_t cbTestFile, uint32_t cMaxReqsInFlight)
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| 66 | {
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| 67 | /* Allocate request array. */
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| 68 | RTFILEAIOREQ *paReqs;
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| 69 | paReqs = (PRTFILEAIOREQ)RTTestGuardedAllocHead(g_hTest, cMaxReqsInFlight * sizeof(RTFILEAIOREQ));
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| 70 | RTTESTI_CHECK_RETV(paReqs);
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| 71 | RT_BZERO(paReqs, cMaxReqsInFlight * sizeof(RTFILEAIOREQ));
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| 72 |
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| 73 | /* Allocate array holding pointer to data buffers. */
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| 74 | void **papvBuf = (void **)RTTestGuardedAllocHead(g_hTest, cMaxReqsInFlight * sizeof(void *));
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| 75 | RTTESTI_CHECK_RETV(papvBuf);
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| 76 |
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| 77 | /* Allocate the buffers*/
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| 78 | for (unsigned i = 0; i < cMaxReqsInFlight; i++)
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| 79 | {
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| 80 | RTTESTI_CHECK_RC_OK_RETV(RTTestGuardedAlloc(g_hTest, cbTestBuf, PAGE_SIZE, true /*fHead*/, &papvBuf[i]));
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| 81 | if (fWrite)
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| 82 | memcpy(papvBuf[i], pvTestBuf, cbTestBuf);
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| 83 | if (fWrite)
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| 84 | memcpy(papvBuf[i], pvTestBuf, cbTestBuf);
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| 85 | else
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| 86 | RT_BZERO(papvBuf[i], cbTestBuf);
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| 87 | }
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| 88 |
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| 89 | /* Allocate array holding completed requests. */
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| 90 | RTFILEAIOREQ *paReqsCompleted;
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| 91 | paReqsCompleted = (PRTFILEAIOREQ)RTTestGuardedAllocHead(g_hTest, cMaxReqsInFlight * sizeof(RTFILEAIOREQ));
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| 92 | RTTESTI_CHECK_RETV(paReqsCompleted);
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| 93 | RT_BZERO(paReqsCompleted, cMaxReqsInFlight * sizeof(RTFILEAIOREQ));
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| 94 |
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| 95 | /* Create a context and associate the file handle with it. */
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| 96 | RTFILEAIOCTX hAioContext;
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| 97 | RTTESTI_CHECK_RC_RETV(RTFileAioCtxCreate(&hAioContext, cMaxReqsInFlight, 0 /* fFlags */), VINF_SUCCESS);
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| 98 | RTTESTI_CHECK_RC_RETV(RTFileAioCtxAssociateWithFile(hAioContext, File), VINF_SUCCESS);
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| 99 |
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| 100 | /* Initialize requests. */
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| 101 | for (unsigned i = 0; i < cMaxReqsInFlight; i++)
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| 102 | RTFileAioReqCreate(&paReqs[i]);
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| 103 |
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| 104 | RTFOFF off = 0;
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| 105 | int cRuns = 0;
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| 106 | uint64_t NanoTS = RTTimeNanoTS();
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| 107 | size_t cbLeft = cbTestFile;
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| 108 | while (cbLeft)
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| 109 | {
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| 110 | int rc;
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| 111 | int cReqs = 0;
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| 112 | for (unsigned i = 0; i < cMaxReqsInFlight; i++)
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| 113 | {
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| 114 | size_t cbTransfer = cbLeft < cbTestBuf ? cbLeft : cbTestBuf;
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| 115 | if (!cbTransfer)
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| 116 | break;
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| 117 |
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| 118 | if (fWrite)
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| 119 | rc = RTFileAioReqPrepareWrite(paReqs[i], File, off, papvBuf[i],
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| 120 | cbTransfer, papvBuf[i]);
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| 121 | else
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| 122 | rc = RTFileAioReqPrepareRead(paReqs[i], File, off, papvBuf[i],
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| 123 | cbTransfer, papvBuf[i]);
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| 124 | RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
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| 125 |
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| 126 | cbLeft -= cbTransfer;
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| 127 | off += cbTransfer;
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| 128 | cReqs++;
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| 129 | }
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| 130 |
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| 131 | rc = RTFileAioCtxSubmit(hAioContext, paReqs, cReqs);
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| 132 | RTTESTI_CHECK_MSG(rc == VINF_SUCCESS, ("Failed to submit tasks after %d runs. rc=%Rrc\n", cRuns, rc));
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| 133 | if (rc != VINF_SUCCESS)
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| 134 | break;
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| 135 |
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| 136 | /* Wait */
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| 137 | uint32_t cCompleted = 0;
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| 138 | RTTESTI_CHECK_RC(rc = RTFileAioCtxWait(hAioContext, cReqs, RT_INDEFINITE_WAIT,
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| 139 | paReqsCompleted, cMaxReqsInFlight, &cCompleted),
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| 140 | VINF_SUCCESS);
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| 141 | if (rc != VINF_SUCCESS)
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| 142 | break;
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| 143 |
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| 144 | if (!fWrite)
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| 145 | {
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| 146 | for (uint32_t i = 0; i < cCompleted; i++)
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| 147 | {
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| 148 | /* Compare that we read the right stuff. */
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| 149 | void *pvBuf = RTFileAioReqGetUser(paReqsCompleted[i]);
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| 150 | RTTESTI_CHECK(pvBuf);
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| 151 |
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| 152 | size_t cbTransfered;
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| 153 | RTTESTI_CHECK_RC(rc = RTFileAioReqGetRC(paReqsCompleted[i], &cbTransfered), VINF_SUCCESS);
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| 154 | if (rc != VINF_SUCCESS)
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| 155 | break;
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| 156 | RTTESTI_CHECK_MSG(cbTransfered == cbTestBuf, ("cbTransfered=%zd\n", cbTransfered));
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| 157 | RTTESTI_CHECK_RC_OK(rc = (memcmp(pvBuf, pvTestBuf, cbTestBuf) == 0 ? VINF_SUCCESS : VERR_BAD_EXE_FORMAT));
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| 158 | if (rc != VINF_SUCCESS)
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| 159 | break;
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| 160 | memset(pvBuf, 0, cbTestBuf);
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| 161 | }
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| 162 | }
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| 163 | cRuns++;
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| 164 | if (RT_FAILURE(rc))
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| 165 | break;
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| 166 | }
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| 167 |
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| 168 | NanoTS = RTTimeNanoTS() - NanoTS;
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| 169 | uint64_t SpeedKBs = (uint64_t)((double)cbTestFile / ((double)NanoTS / 1000000000.0) / 1024);
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| 170 | RTTestValue(g_hTest, "Throughput", SpeedKBs, RTTESTUNIT_KILOBYTES_PER_SEC);
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| 171 |
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| 172 | /* cleanup */
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| 173 | for (unsigned i = 0; i < cMaxReqsInFlight; i++)
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| 174 | RTTestGuardedFree(g_hTest, papvBuf[i]);
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| 175 | RTTestGuardedFree(g_hTest, papvBuf);
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| 176 | for (unsigned i = 0; i < cMaxReqsInFlight; i++)
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| 177 | RTTESTI_CHECK_RC(RTFileAioReqDestroy(paReqs[i]), VINF_SUCCESS);
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| 178 | RTTESTI_CHECK_RC(RTFileAioCtxDestroy(hAioContext), VINF_SUCCESS);
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| 179 | RTTestGuardedFree(g_hTest, paReqs);
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| 180 | }
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| 181 |
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| 182 | int main()
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| 183 | {
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| 184 | int rc = RTTestInitAndCreate("tstRTFileAio", &g_hTest);
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| 185 | if (rc)
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| 186 | return rc;
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| 187 |
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| 188 | /* Check if the API is available. */
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| 189 | RTTestSub(g_hTest, "RTFileAioGetLimits");
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| 190 | RTFILEAIOLIMITS AioLimits;
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| 191 | RT_ZERO(AioLimits);
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| 192 | RTTESTI_CHECK_RC(rc = RTFileAioGetLimits(&AioLimits), VINF_SUCCESS);
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| 193 | if (RT_SUCCESS(rc))
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| 194 | {
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| 195 | RTTestSub(g_hTest, "Write");
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| 196 | RTFILE hFile;
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| 197 | RTFSTYPE enmType;
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| 198 | bool fAsyncMayFail = false;
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| 199 | rc = RTFsQueryType("tstFileAio#1.tst", &enmType);
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| 200 | if ( RT_SUCCESS(rc)
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| 201 | && enmType == RTFSTYPE_TMPFS)
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| 202 | fAsyncMayFail = true;
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| 203 | rc = RTFileOpen(&hFile, "tstFileAio#1.tst",
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| 204 | RTFILE_O_READWRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_DENY_NONE | RTFILE_O_ASYNC_IO);
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| 205 | RTTESTI_CHECK( rc == VINF_SUCCESS
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| 206 | || ((rc == VERR_ACCESS_DENIED || rc == VERR_INVALID_PARAMETER) && fAsyncMayFail));
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| 207 | if (RT_SUCCESS(rc))
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| 208 | {
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| 209 | uint8_t *pbTestBuf = (uint8_t *)RTTestGuardedAllocTail(g_hTest, TSTFILEAIO_BUFFER_SIZE);
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| 210 | for (unsigned i = 0; i < TSTFILEAIO_BUFFER_SIZE; i++)
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| 211 | pbTestBuf[i] = i % 256;
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| 212 |
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| 213 | uint32_t cReqsMax = AioLimits.cReqsOutstandingMax < TSTFILEAIO_MAX_REQS_IN_FLIGHT
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| 214 | ? AioLimits.cReqsOutstandingMax
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| 215 | : TSTFILEAIO_MAX_REQS_IN_FLIGHT;
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| 216 |
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| 217 | /* Basic write test. */
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| 218 | RTTestIPrintf(RTTESTLVL_ALWAYS, "Preparing test file, this can take some time and needs quite a bit of harddisk space...\n");
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| 219 | tstFileAioTestReadWriteBasic(hFile, true /*fWrite*/, pbTestBuf, TSTFILEAIO_BUFFER_SIZE, 100*_1M, cReqsMax);
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| 220 |
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| 221 | /* Reopen the file before doing the next test. */
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| 222 | RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
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| 223 | if (RTTestErrorCount(g_hTest) == 0)
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| 224 | {
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| 225 | RTTestSub(g_hTest, "Read/Write");
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| 226 | RTTESTI_CHECK_RC(rc = RTFileOpen(&hFile, "tstFileAio#1.tst",
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| 227 | RTFILE_O_READWRITE | RTFILE_O_OPEN | RTFILE_O_DENY_NONE | RTFILE_O_ASYNC_IO),
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| 228 | VINF_SUCCESS);
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| 229 | if (RT_SUCCESS(rc))
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| 230 | {
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| 231 | tstFileAioTestReadWriteBasic(hFile, false /*fWrite*/, pbTestBuf, TSTFILEAIO_BUFFER_SIZE, 100*_1M, cReqsMax);
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| 232 | RTFileClose(hFile);
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| 233 | }
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| 234 | }
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| 235 |
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| 236 | /* Cleanup */
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| 237 | RTFileDelete("tstFileAio#1.tst");
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| 238 | }
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| 239 | else
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| 240 | RTTestSkipped(g_hTest, "rc=%Rrc", rc);
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| 241 | }
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| 242 |
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| 243 | /*
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| 244 | * Summary
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| 245 | */
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| 246 | return RTTestSummaryAndDestroy(g_hTest);
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| 247 | }
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| 248 |
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