/* $Id: tstRTFileAio.cpp 29393 2010-05-12 00:20:38Z vboxsync $ */ /** @file * IPRT Testcase - File Async I/O. */ /* * Copyright (C) 2006-2010 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. */ /******************************************************************************* * Header Files * *******************************************************************************/ #include #include #include #include #include #include /******************************************************************************* * Defined Constants And Macros * *******************************************************************************/ /** @todo make configurable through cmd line. */ #define TSTFILEAIO_MAX_REQS_IN_FLIGHT 64 #define TSTFILEAIO_BUFFER_SIZE (64*_1K) /******************************************************************************* * Global Variables * *******************************************************************************/ static RTTEST g_hTest = NIL_RTTEST; void tstFileAioTestReadWriteBasic(RTFILE File, bool fWrite, void *pvTestBuf, size_t cbTestBuf, size_t cbTestFile, uint32_t cMaxReqsInFlight) { /* Allocate request array. */ RTFILEAIOREQ *paReqs; paReqs = (PRTFILEAIOREQ)RTTestGuardedAllocHead(g_hTest, cMaxReqsInFlight * sizeof(RTFILEAIOREQ)); RTTESTI_CHECK_RETV(paReqs); RT_BZERO(paReqs, sizeof(cMaxReqsInFlight * sizeof(RTFILEAIOREQ))); /* Allocate array holding pointer to data buffers. */ void **papvBuf = (void **)RTTestGuardedAllocHead(g_hTest, cMaxReqsInFlight * sizeof(void *)); RTTESTI_CHECK_RETV(papvBuf); /* Allocate the buffers*/ for (unsigned i = 0; i < cMaxReqsInFlight; i++) { RTTESTI_CHECK_RC_OK_RETV(RTTestGuardedAlloc(g_hTest, cbTestBuf, PAGE_SIZE, true /*fHead*/, &papvBuf[i])); if (fWrite) memcpy(papvBuf[i], pvTestBuf, cbTestBuf); if (fWrite) memcpy(papvBuf[i], pvTestBuf, cbTestBuf); else RT_BZERO(papvBuf[i], cbTestBuf); } /* Allocate array holding completed requests. */ RTFILEAIOREQ *paReqsCompleted; paReqsCompleted = (PRTFILEAIOREQ)RTTestGuardedAllocHead(g_hTest, cMaxReqsInFlight * sizeof(RTFILEAIOREQ)); RTTESTI_CHECK_RETV(paReqsCompleted); RT_BZERO(paReqsCompleted, cMaxReqsInFlight * sizeof(RTFILEAIOREQ)); /* Create a context and associate the file handle with it. */ RTFILEAIOCTX hAioContext; RTTESTI_CHECK_RC_RETV(RTFileAioCtxCreate(&hAioContext, cMaxReqsInFlight), VINF_SUCCESS); RTTESTI_CHECK_RC_RETV(RTFileAioCtxAssociateWithFile(hAioContext, File), VINF_SUCCESS); /* Initialize requests. */ for (unsigned i = 0; i < cMaxReqsInFlight; i++) RTFileAioReqCreate(&paReqs[i]); RTFOFF off = 0; int cRuns = 0; uint64_t NanoTS = RTTimeNanoTS(); size_t cbLeft = cbTestFile; while (cbLeft) { int rc; int cReqs = 0; for (unsigned i = 0; i < cMaxReqsInFlight; i++) { size_t cbTransfer = cbLeft < cbTestBuf ? cbLeft : cbTestBuf; if (!cbTransfer) break; if (fWrite) rc = RTFileAioReqPrepareWrite(paReqs[i], File, off, papvBuf[i], cbTransfer, papvBuf[i]); else rc = RTFileAioReqPrepareRead(paReqs[i], File, off, papvBuf[i], cbTransfer, papvBuf[i]); RTTESTI_CHECK_RC(rc, VINF_SUCCESS); cbLeft -= cbTransfer; off += cbTransfer; cReqs++; } rc = RTFileAioCtxSubmit(hAioContext, paReqs, cReqs); RTTESTI_CHECK_MSG(rc == VINF_SUCCESS, ("Failed to submit tasks after %d runs. rc=%Rrc\n", cRuns, rc)); if (rc != VINF_SUCCESS) break; /* Wait */ uint32_t cCompleted = 0; RTTESTI_CHECK_RC(rc = RTFileAioCtxWait(hAioContext, cReqs, RT_INDEFINITE_WAIT, paReqsCompleted, cMaxReqsInFlight, &cCompleted), VINF_SUCCESS); if (rc != VINF_SUCCESS) break; if (!fWrite) { for (uint32_t i = 0; i < cCompleted; i++) { /* Compare that we read the right stuff. */ void *pvBuf = RTFileAioReqGetUser(paReqsCompleted[i]); RTTESTI_CHECK(pvBuf); size_t cbTransfered; RTTESTI_CHECK_RC(rc = RTFileAioReqGetRC(paReqsCompleted[i], &cbTransfered), VINF_SUCCESS); if (rc != VINF_SUCCESS) break; RTTESTI_CHECK_MSG(cbTransfered == cbTestBuf, ("cbTransfered=%zd\n", cbTransfered)); RTTESTI_CHECK_RC_OK(rc = (memcmp(pvBuf, pvTestBuf, cbTestBuf) == 0 ? VINF_SUCCESS : VERR_BAD_EXE_FORMAT)); if (rc != VINF_SUCCESS) break; memset(pvBuf, 0, cbTestBuf); } } cRuns++; if (RT_FAILURE(rc)) break; } NanoTS = RTTimeNanoTS() - NanoTS; uint64_t SpeedKBs = (uint64_t)(cbTestFile / (NanoTS / 1000000000.0) / 1024); RTTestValue(g_hTest, "Throughput", SpeedKBs, RTTESTUNIT_KILOBYTES_PER_SEC); /* cleanup */ for (unsigned i = 0; i < cMaxReqsInFlight; i++) RTTestGuardedFree(g_hTest, papvBuf[i]); RTTestGuardedFree(g_hTest, papvBuf); for (unsigned i = 0; i < cMaxReqsInFlight; i++) RTTESTI_CHECK_RC(RTFileAioReqDestroy(paReqs[i]), VINF_SUCCESS); RTTESTI_CHECK_RC(RTFileAioCtxDestroy(hAioContext), VINF_SUCCESS); RTTestGuardedFree(g_hTest, paReqs); } int main() { int rc = RTTestInitAndCreate("tstRTFileAio", &g_hTest); if (rc) return rc; /* Check if the API is available. */ RTTestSub(g_hTest, "RTFileAioGetLimits"); RTFILEAIOLIMITS AioLimits; RT_ZERO(AioLimits); RTTESTI_CHECK_RC(rc = RTFileAioGetLimits(&AioLimits), VINF_SUCCESS); if (RT_SUCCESS(rc)) { RTTestSub(g_hTest, "Write"); RTFILE hFile; RTTESTI_CHECK_RC(rc = RTFileOpen(&hFile, "tstFileAio#1.tst", RTFILE_O_READWRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_DENY_NONE | RTFILE_O_ASYNC_IO), VINF_SUCCESS); if (RT_SUCCESS(rc)) { uint8_t *pbTestBuf = (uint8_t *)RTTestGuardedAllocTail(g_hTest, TSTFILEAIO_BUFFER_SIZE); for (unsigned i = 0; i < TSTFILEAIO_BUFFER_SIZE; i++) pbTestBuf[i] = i % 256; uint32_t cReqsMax = AioLimits.cReqsOutstandingMax < TSTFILEAIO_MAX_REQS_IN_FLIGHT ? AioLimits.cReqsOutstandingMax : TSTFILEAIO_MAX_REQS_IN_FLIGHT; /* Basic write test. */ RTTestIPrintf(RTTESTLVL_ALWAYS, "Preparing test file, this can take some time and needs quite a bit of harddisk space...\n"); tstFileAioTestReadWriteBasic(hFile, true /*fWrite*/, pbTestBuf, TSTFILEAIO_BUFFER_SIZE, 100*_1M, cReqsMax); /* Reopen the file before doing the next test. */ RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS); if (RTTestErrorCount(g_hTest) == 0) { RTTestSub(g_hTest, "Read/Write"); RTTESTI_CHECK_RC(rc = RTFileOpen(&hFile, "tstFileAio#1.tst", RTFILE_O_READWRITE | RTFILE_O_OPEN | RTFILE_O_DENY_NONE | RTFILE_O_ASYNC_IO), VINF_SUCCESS); if (RT_SUCCESS(rc)) { tstFileAioTestReadWriteBasic(hFile, false /*fWrite*/, pbTestBuf, TSTFILEAIO_BUFFER_SIZE, 100*_1M, cReqsMax); RTFileClose(hFile); } } /* Cleanup */ RTFileDelete("tstFileAio#1.tst"); } } /* * Summary */ return RTTestSummaryAndDestroy(g_hTest); }