Runtime/testcase/tstRTSemRW.cpp

	tstRTSemRW.cpp revision 6bec82abab27703aa3bad54509bf0d4d196fbeb8
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync/* $Id$ */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync/** @file
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * IPRT Testcase - Reader/Writer Semaphore.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync/*
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * Copyright (C) 2009 Sun Microsystems, Inc.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync *
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * available from http://www.virtualbox.org. This file is free software;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * you can redistribute it and/or modify it under the terms of the GNU
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * General Public License (GPL) as published by the Free Software
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync *
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * The contents of this file may alternatively be used under the terms
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * of the Common Development and Distribution License Version 1.0
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * VirtualBox OSE distribution, in which case the provisions of the
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * CDDL are applicable instead of those of the GPL.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync *
3fb3de312d1ff675e0f7cc62a7d46cbb1d5d9353vboxsync * You may elect to license modified versions of this file under the
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * terms and conditions of either the GPL or the CDDL or both.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync *
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync * additional information or have any questions.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync/*******************************************************************************
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync*   Header Files                                                               *
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync*******************************************************************************/
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync#include <iprt/semaphore.h>
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync#include <iprt/asm.h>
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync#include <iprt/assert.h>
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync#include <iprt/err.h>
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync#include <iprt/initterm.h>
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync#include <iprt/rand.h>
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync#include <iprt/string.h>
4260648b018894247c6a73e244050be76c28f857vboxsync#include <iprt/stream.h>
4260648b018894247c6a73e244050be76c28f857vboxsync#include <iprt/test.h>
4260648b018894247c6a73e244050be76c28f857vboxsync#include <iprt/time.h>
4260648b018894247c6a73e244050be76c28f857vboxsync#include <iprt/thread.h>
4260648b018894247c6a73e244050be76c28f857vboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync/*******************************************************************************
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync*   Global Variables                                                           *
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync*******************************************************************************/
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsyncstatic RTTEST               g_hTest;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsyncstatic RTSEMRW              g_hSemRW = NIL_RTSEMRW;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsyncstatic bool volatile        g_fTerminate;
248c89033c87fed7229aa29bbbc4f4698fb13687vboxsyncstatic bool                 g_fYield;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsyncstatic bool                 g_fQuiet;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsyncstatic unsigned             g_uWritePercent;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsyncstatic uint32_t volatile    g_cConcurrentWriters;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsyncstatic uint32_t volatile    g_cConcurrentReaders;
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsyncstatic uint32_t volatile    g_cErrors;
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsyncint ThreadTest1(RTTHREAD ThreadSelf, void *pvUser)
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync{
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync    // Use randomization to get a little more variation of the sync pattern
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    unsigned c100 = RTRandU32Ex(0, 99);
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    uint64_t *pu64 = (uint64_t *)pvUser;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    bool fWrite;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    for (;;)
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    {
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync        int rc;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync        unsigned readrec = RTRandU32Ex(0, 3);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        unsigned writerec = RTRandU32Ex(0, 3);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        /* Don't overdo recursion testing. */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        if (readrec > 1)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            readrec--;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        if (writerec > 1)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            writerec--;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
c55bf74b54ecdfb5ebc4e5d90b620d0fee31737evboxsync        fWrite = (c100 < g_uWritePercent);
c55bf74b54ecdfb5ebc4e5d90b620d0fee31737evboxsync        if (fWrite)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            for (unsigned i = 0; i <= writerec; i++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                rc = RTSemRWRequestWriteNoResume(g_hSemRW, RT_INDEFINITE_WAIT);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                if (RT_FAILURE(rc))
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                    RTTestFailed(g_hTest, "Write recursion %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                    break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (RT_FAILURE(rc))
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (ASMAtomicIncU32(&g_cConcurrentWriters) != 1)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s after write locking it",
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                             g_cConcurrentWriters, RTThreadSelfName());
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (g_cConcurrentReaders != 0)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync                RTTestFailed(g_hTest, "g_cConcurrentReaders=%u on %s after write locking it",
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync                             g_cConcurrentReaders, RTThreadSelfName());
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                break;
4260648b018894247c6a73e244050be76c28f857vboxsync            }
4260648b018894247c6a73e244050be76c28f857vboxsync        }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        else
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        {
4260648b018894247c6a73e244050be76c28f857vboxsync            rc = RTSemRWRequestReadNoResume(g_hSemRW, RT_INDEFINITE_WAIT);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (RT_FAILURE(rc))
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                RTTestFailed(g_hTest, "Read locking on %s failed with rc=%Rrc", RTThreadSelfName(), rc);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            ASMAtomicIncU32(&g_cConcurrentReaders);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (g_cConcurrentWriters != 0)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s after read locking it",
4260648b018894247c6a73e244050be76c28f857vboxsync                             g_cConcurrentWriters, RTThreadSelfName());
4260648b018894247c6a73e244050be76c28f857vboxsync                break;
4260648b018894247c6a73e244050be76c28f857vboxsync            }
4260648b018894247c6a73e244050be76c28f857vboxsync        }
4260648b018894247c6a73e244050be76c28f857vboxsync        for (unsigned i = 0; i < readrec; i++)
4260648b018894247c6a73e244050be76c28f857vboxsync        {
4260648b018894247c6a73e244050be76c28f857vboxsync            rc = RTSemRWRequestReadNoResume(g_hSemRW, RT_INDEFINITE_WAIT);
4260648b018894247c6a73e244050be76c28f857vboxsync            if (RT_FAILURE(rc))
4260648b018894247c6a73e244050be76c28f857vboxsync            {
4260648b018894247c6a73e244050be76c28f857vboxsync                RTTestFailed(g_hTest, "Read recursion %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
4260648b018894247c6a73e244050be76c28f857vboxsync                break;
4260648b018894247c6a73e244050be76c28f857vboxsync            }
4260648b018894247c6a73e244050be76c28f857vboxsync        }
4260648b018894247c6a73e244050be76c28f857vboxsync        if (RT_FAILURE(rc))
4260648b018894247c6a73e244050be76c28f857vboxsync            break;
4260648b018894247c6a73e244050be76c28f857vboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync        /*
4260648b018894247c6a73e244050be76c28f857vboxsync         * Check for fairness: The values of the threads should not differ too much
4260648b018894247c6a73e244050be76c28f857vboxsync         */
4260648b018894247c6a73e244050be76c28f857vboxsync        (*pu64)++;
4260648b018894247c6a73e244050be76c28f857vboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync        /*
4260648b018894247c6a73e244050be76c28f857vboxsync         * Check for correctness: Give other threads a chance. If the implementation is
4260648b018894247c6a73e244050be76c28f857vboxsync         * correct, no other thread will be able to enter this lock now.
4260648b018894247c6a73e244050be76c28f857vboxsync         */
4260648b018894247c6a73e244050be76c28f857vboxsync        if (g_fYield)
4260648b018894247c6a73e244050be76c28f857vboxsync            RTThreadYield();
4260648b018894247c6a73e244050be76c28f857vboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync        for (unsigned i = 0; i < readrec; i++)
4260648b018894247c6a73e244050be76c28f857vboxsync        {
4260648b018894247c6a73e244050be76c28f857vboxsync            rc = RTSemRWReleaseRead(g_hSemRW);
4260648b018894247c6a73e244050be76c28f857vboxsync            if (RT_FAILURE(rc))
4260648b018894247c6a73e244050be76c28f857vboxsync            {
4260648b018894247c6a73e244050be76c28f857vboxsync                RTTestFailed(g_hTest, "Read release %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
4260648b018894247c6a73e244050be76c28f857vboxsync        }
4260648b018894247c6a73e244050be76c28f857vboxsync        if (RT_FAILURE(rc))
4260648b018894247c6a73e244050be76c28f857vboxsync            break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        if (fWrite)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (ASMAtomicDecU32(&g_cConcurrentWriters) != 0)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s before write release",
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                             g_cConcurrentWriters, RTThreadSelfName());
4260648b018894247c6a73e244050be76c28f857vboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (g_cConcurrentReaders != 0)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                RTTestFailed(g_hTest, "g_cConcurrentReaders=%u on %s before write release",
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                             g_cConcurrentReaders, RTThreadSelfName());
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            for (unsigned i = 0; i <= writerec; i++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                rc = RTSemRWReleaseWrite(g_hSemRW);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                if (RT_FAILURE(rc))
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                    RTTestFailed(g_hTest, "Write release %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                    break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        else
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (g_cConcurrentWriters != 0)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s before read release",
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                             g_cConcurrentWriters, RTThreadSelfName());
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            ASMAtomicDecU32(&g_cConcurrentReaders);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            rc = RTSemRWReleaseRead(g_hSemRW);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            if (RT_FAILURE(rc))
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                RTTestFailed(g_hTest, "Read release on %s failed with rc=%Rrc", RTThreadSelfName(), rc);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        if (g_fTerminate)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            break;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        c100++;
4260648b018894247c6a73e244050be76c28f857vboxsync        c100 %= 100;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    }
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    if (!g_fQuiet)
4260648b018894247c6a73e244050be76c28f857vboxsync        RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "Thread %s exited with %lld\n", RTThreadSelfName(), *pu64);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    return VINF_SUCCESS;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync}
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsyncstatic void Test3(unsigned cThreads, unsigned cSeconds, unsigned uWritePercent, bool fYield, bool fQuiet)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync{
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    int rc;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    unsigned i;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    uint64_t au64[32];
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTHREAD aThreads[RT_ELEMENTS(au64)];
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    AssertRelease(cThreads <= RT_ELEMENTS(au64));
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync    RTTestSubF(g_hTest, "Test3 - %u threads, %u sec, %u%% writes, %syielding",
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync               cThreads, cSeconds, uWritePercent, fYield ? "" : "non-");
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    /*
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync     * Init globals.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync     */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    g_fYield = fYield;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    g_fQuiet = fQuiet;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    g_fTerminate = false;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    g_uWritePercent = uWritePercent;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    g_cConcurrentWriters = 0;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    g_cConcurrentReaders = 0;
4260648b018894247c6a73e244050be76c28f857vboxsync
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTSemRWCreate(&g_hSemRW), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync    /*
4260648b018894247c6a73e244050be76c28f857vboxsync     * Create the threads and let them block on the semrw.
4260648b018894247c6a73e244050be76c28f857vboxsync     */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTSemRWRequestWrite(g_hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync    for (i = 0; i < cThreads; i++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        au64[i] = 0;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync        RTTEST_CHECK_RC_RETV(g_hTest, RTThreadCreateF(&aThreads[i], ThreadTest1, &au64[i], 0,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                                                      RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                                                      "test-%u", i), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    /*
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync     * Do the test run.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync     */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    uint64_t u64StartTS = RTTimeNanoTS();
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseWrite(g_hSemRW), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTThreadSleep(cSeconds * 1000);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    ASMAtomicWriteBool(&g_fTerminate, true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    uint64_t ElapsedNS = RTTimeNanoTS() - u64StartTS;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    /*
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync     * Clean up the threads and semaphore.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync     */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    for (i = 0; i < cThreads; i++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC(g_hTest, RTThreadWait(aThreads[i], 5000, NULL), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync    RTTEST_CHECK_MSG(g_hTest, g_cConcurrentWriters == 0, (g_hTest, "g_cConcurrentWriters=%u at end of test\n", g_cConcurrentWriters));
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync    RTTEST_CHECK_MSG(g_hTest, g_cConcurrentReaders == 0, (g_hTest, "g_cConcurrentReaders=%u at end of test\n", g_cConcurrentReaders));
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWDestroy(g_hSemRW), VINF_SUCCESS);
4260648b018894247c6a73e244050be76c28f857vboxsync    g_hSemRW = NIL_RTSEMRW;
4260648b018894247c6a73e244050be76c28f857vboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync//    if (g_cErrors)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync//        RTThreadSleep(100);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    /*
4260648b018894247c6a73e244050be76c28f857vboxsync     * Collect and display the results.
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync     */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    uint64_t Total = au64[0];
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    for (i = 1; i < cThreads; i++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        Total += au64[i];
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    uint64_t Normal = Total / cThreads;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    uint64_t MaxDeviation = 0;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    for (i = 0; i < cThreads; i++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        uint64_t Delta = RT_ABS((int64_t)(au64[i] - Normal));
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        if (Delta > Normal / 2)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                         "Warning! Thread %u deviates by more than 50%% - %llu (it) vs. %llu (avg) - %llu%%\n",
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                         i, au64[i], Normal, Delta * 100 / Normal);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        if (Delta > MaxDeviation)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            MaxDeviation = Delta;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                 "Threads: %u  Total: %llu  Per Sec: %llu  Avg: %llu ns  Max dev: %llu%%\n",
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                 cThreads,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                 Total,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                 Total / cSeconds,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                 ElapsedNS / Total,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                 MaxDeviation * 100 / Normal
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                 );
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync}
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsyncstatic DECLCALLBACK(int) Test2Thread(RTTHREAD hThreadSelf, void *pvUser)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync{
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTSEMRW hSemRW = (RTSEMRW)pvUser;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWRequestRead(hSemRW, 0), VERR_TIMEOUT);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWRequestWrite(hSemRW, 0), VERR_TIMEOUT);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWRequestRead(hSemRW, 1), VERR_TIMEOUT);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWRequestWrite(hSemRW, 1), VERR_TIMEOUT);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWRequestRead(hSemRW, 50), VERR_TIMEOUT);
4260648b018894247c6a73e244050be76c28f857vboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWRequestWrite(hSemRW, 50), VERR_TIMEOUT);
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    return VINF_SUCCESS;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync}
4260648b018894247c6a73e244050be76c28f857vboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync
4260648b018894247c6a73e244050be76c28f857vboxsyncstatic void Test2(void)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync{
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTestSub(g_hTest, "Timeout");
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
4260648b018894247c6a73e244050be76c28f857vboxsync    RTSEMRW hSemRW = NIL_RTSEMRW;
4260648b018894247c6a73e244050be76c28f857vboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTSemRWCreate(&hSemRW), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    /* Lock it for writing and let the thread do the remainder of the test. */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTSemRWRequestWrite(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTHREAD hThread;
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTThreadCreate(&hThread, Test2Thread, hSemRW, 0,
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                                                 RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "test2"),
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                         VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTThreadWait(hThread, 15000, NULL), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC(g_hTest, RTSemRWDestroy(hSemRW), VINF_SUCCESS);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync}
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsyncstatic bool Test1(void)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync{
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTestSub(g_hTest, "Basics");
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTSEMRW hSemRW = NIL_RTSEMRW;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWCreate(&hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RET(g_hTest, hSemRW != NIL_RTSEMRW, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    for (unsigned cMs = 0; cMs < 50; cMs++)
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync    {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, cMs), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, cMs), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, RT_INDEFINITE_WAIT), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
4260648b018894247c6a73e244050be76c28f857vboxsync
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync    for (unsigned cMs = 0; cMs < 50; cMs++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, cMs), VINF_SUCCESS, false);
4260648b018894247c6a73e244050be76c28f857vboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 1, false);
4260648b018894247c6a73e244050be76c28f857vboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, cMs), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
4260648b018894247c6a73e244050be76c28f857vboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestRead(hSemRW, cMs), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 1, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWRequestWrite(hSemRW, cMs), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 3, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 1, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        /*  midway  */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 1, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseRead(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 2, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 1, false);
4260648b018894247c6a73e244050be76c28f857vboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == true, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTSemRWReleaseWrite(hSemRW), VINF_SUCCESS, false);
4260648b018894247c6a73e244050be76c28f857vboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriteRecursion(hSemRW) == 0, false);
4260648b018894247c6a73e244050be76c28f857vboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWGetWriterReadRecursion(hSemRW) == 0, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        RTTEST_CHECK_RET(g_hTest, RTSemRWIsWriteOwner(hSemRW) == false, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWDestroy(hSemRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTSemRWDestroy(NIL_RTSEMRW), VINF_SUCCESS, false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    return true;
4260648b018894247c6a73e244050be76c28f857vboxsync}
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsyncint main(int argc, char **argv)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync{
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    int rc = RTTestInitAndCreate("tstRTSemRW", &g_hTest);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    if (rc)
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync        return 1;
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    RTTestBanner(g_hTest);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    if (Test1())
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        if (argc == 1)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        {
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test2();
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            /*    threads, seconds, writePercent,  yield,  quiet */
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync            Test3(      1,       1,            0,   true,  false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      1,       1,            1,   true,  false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      1,       1,            5,   true,  false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      2,       1,            3,   true,  false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(     10,       1,            5,   true,  false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(     10,      10,           10,  false,  false);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "benchmarking...\n");
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            for (unsigned cThreads = 1; cThreads < 32; cThreads++)
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync                Test3(cThreads,  2,            1,  false,   true);
4260648b018894247c6a73e244050be76c28f857vboxsync
d8e12fa5dd1c35282b98cb165e42b6b395cf971bvboxsync            /** @todo add a testcase where some stuff times out. */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync        }
4260648b018894247c6a73e244050be76c28f857vboxsync        else
4260648b018894247c6a73e244050be76c28f857vboxsync        {
4260648b018894247c6a73e244050be76c28f857vboxsync            /*    threads, seconds, writePercent,  yield,  quiet */
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "benchmarking...\n");
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      1,       3,            1,  false,   true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      1,       3,            1,  false,   true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      1,       3,            1,  false,   true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      2,       3,            1,  false,   true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      2,       3,            1,  false,   true);
4260648b018894247c6a73e244050be76c28f857vboxsync            Test3(      2,       3,            1,  false,   true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      3,       3,            1,  false,   true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      3,       3,            1,  false,   true);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync            Test3(      3,       3,            1,  false,   true);
880dee6db77afb69b9a9a442bbf6e2981efce3f7vboxsync        }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    }
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync    return RTTestSummaryAndDestroy(g_hTest);
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync}
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync
462e60a19d02a99b2b1a5c08dff74bb0808d707cvboxsync