Runtime/testcase/tstRTCritSectRw.cpp

040082187f3f86940a3a876e4dd478bd8581b36fvboxsync/* $Id$ */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync/** @file
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * IPRT Testcase - Reader/Writer Critical Sections.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync/*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * Copyright (C) 2009-2013 Oracle Corporation
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync *
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * available from http://www.virtualbox.org. This file is free software;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * you can redistribute it and/or modify it under the terms of the GNU
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * General Public License (GPL) as published by the Free Software
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync *
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * The contents of this file may alternatively be used under the terms
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * of the Common Development and Distribution License Version 1.0
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * VirtualBox OSE distribution, in which case the provisions of the
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * CDDL are applicable instead of those of the GPL.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync *
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * You may elect to license modified versions of this file under the
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync * terms and conditions of either the GPL or the CDDL or both.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync/*******************************************************************************
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync*   Header Files                                                               *
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync*******************************************************************************/
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/critsect.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/asm.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/assert.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/err.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/initterm.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/lockvalidator.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/rand.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/semaphore.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/string.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/stream.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/test.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/time.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync#include <iprt/thread.h>
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync/*******************************************************************************
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync*   Global Variables                                                           *
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync*******************************************************************************/
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic RTTEST               g_hTest;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic RTCRITSECTRW         g_CritSectRw;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic bool volatile        g_fTerminate;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic bool                 g_fYield;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic bool                 g_fQuiet;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic unsigned             g_uWritePercent;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic uint32_t volatile    g_cConcurrentWriters;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic uint32_t volatile    g_cConcurrentReaders;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic DECLCALLBACK(int) Test4Thread(RTTHREAD ThreadSelf, void *pvUser)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync{
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    /* Use randomization to get a little more variation of the sync pattern.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync       We use a pseudo random generator here so that we don't end up testing
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync       the speed of the /dev/urandom implementation, but rather the read-write
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync       semaphores. */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    int rc;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTRAND hRand;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_OK_RET(g_hTest, rc = RTRandAdvCreateParkMiller(&hRand), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_OK_RET(g_hTest, rc = RTRandAdvSeed(hRand, (uintptr_t)ThreadSelf), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    unsigned c100 = RTRandAdvU32Ex(hRand, 0, 99);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t *pcItr = (uint64_t *)pvUser;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    bool fWrite;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    for (;;)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        unsigned readrec = RTRandAdvU32Ex(hRand, 0, 3);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        unsigned writerec = RTRandAdvU32Ex(hRand, 0, 3);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        /* Don't overdo recursion testing. */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (readrec > 1)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            readrec--;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (writerec > 1)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            writerec--;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        fWrite = (c100 < g_uWritePercent);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (fWrite)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            for (unsigned i = 0; i <= writerec; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                rc = RTCritSectRwEnterExcl(&g_CritSectRw);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                    RTTestFailed(g_hTest, "Write recursion %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                    break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (ASMAtomicIncU32(&g_cConcurrentWriters) != 1)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s after write locking it",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                             g_cConcurrentWriters, RTThreadSelfName());
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (g_cConcurrentReaders != 0)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "g_cConcurrentReaders=%u on %s after write locking it",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                             g_cConcurrentReaders, RTThreadSelfName());
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        else
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            rc = RTCritSectRwEnterShared(&g_CritSectRw);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "Read locking on %s failed with rc=%Rrc", RTThreadSelfName(), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            ASMAtomicIncU32(&g_cConcurrentReaders);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (g_cConcurrentWriters != 0)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s after read locking it",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                             g_cConcurrentWriters, RTThreadSelfName());
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        for (unsigned i = 0; i < readrec; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            rc = RTCritSectRwEnterShared(&g_CritSectRw);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "Read recursion %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        /*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync         * Check for fairness: The values of the threads should not differ too much
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync         */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        (*pcItr)++;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        /*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync         * Check for correctness: Give other threads a chance. If the implementation is
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync         * correct, no other thread will be able to enter this lock now.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync         */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (g_fYield)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            RTThreadYield();
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        for (unsigned i = 0; i < readrec; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            rc = RTCritSectRwLeaveShared(&g_CritSectRw);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "Read release %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (fWrite)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (ASMAtomicDecU32(&g_cConcurrentWriters) != 0)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s before write release",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                             g_cConcurrentWriters, RTThreadSelfName());
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (g_cConcurrentReaders != 0)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "g_cConcurrentReaders=%u on %s before write release",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                             g_cConcurrentReaders, RTThreadSelfName());
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            for (unsigned i = 0; i <= writerec; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                rc = RTCritSectRwLeaveExcl(&g_CritSectRw);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                    RTTestFailed(g_hTest, "Write release %u on %s failed with rc=%Rrc", i, RTThreadSelfName(), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                    break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        else
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (g_cConcurrentWriters != 0)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "g_cConcurrentWriters=%u on %s before read release",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                             g_cConcurrentWriters, RTThreadSelfName());
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            ASMAtomicDecU32(&g_cConcurrentReaders);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            rc = RTCritSectRwLeaveShared(&g_CritSectRw);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            if (RT_FAILURE(rc))
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                RTTestFailed(g_hTest, "Read release on %s failed with rc=%Rrc", RTThreadSelfName(), rc);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (g_fTerminate)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            break;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        c100++;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        c100 %= 100;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    if (!g_fQuiet)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "Thread %s exited with %lld\n", RTThreadSelfName(), *pcItr);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTRandAdvDestroy(hRand);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    return VINF_SUCCESS;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync}
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic void Test4(unsigned cThreads, unsigned cSeconds, unsigned uWritePercent, bool fYield, bool fQuiet)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync{
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    unsigned i;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t acIterations[32];
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTHREAD aThreads[RT_ELEMENTS(acIterations)];
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    AssertRelease(cThreads <= RT_ELEMENTS(acIterations));
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTestSubF(g_hTest, "Test4 - %u threads, %u sec, %u%% writes, %syielding",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync               cThreads, cSeconds, uWritePercent, fYield ? "" : "non-");
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    /*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     * Init globals.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    g_fYield = fYield;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    g_fQuiet = fQuiet;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    g_fTerminate = false;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    g_uWritePercent = uWritePercent;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    g_cConcurrentWriters = 0;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    g_cConcurrentReaders = 0;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTCritSectRwInit(&g_CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    /*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     * Create the threads and let them block on the semrw.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTCritSectRwEnterExcl(&g_CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    for (i = 0; i < cThreads; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        acIterations[i] = 0;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RETV(g_hTest, RTThreadCreateF(&aThreads[i], Test4Thread, &acIterations[i], 0,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                                                      RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                                                      "test-%u", i), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    /*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     * Do the test run.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint32_t cErrorsBefore = RTTestErrorCount(g_hTest);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t u64StartTS = RTTimeNanoTS();
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwLeaveExcl(&g_CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTThreadSleep(cSeconds * 1000);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    ASMAtomicWriteBool(&g_fTerminate, true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t ElapsedNS = RTTimeNanoTS() - u64StartTS;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    /*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     * Clean up the threads and semaphore.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    for (i = 0; i < cThreads; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC(g_hTest, RTThreadWait(aThreads[i], 5000, NULL), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_MSG(g_hTest, g_cConcurrentWriters == 0, (g_hTest, "g_cConcurrentWriters=%u at end of test\n", g_cConcurrentWriters));
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_MSG(g_hTest, g_cConcurrentReaders == 0, (g_hTest, "g_cConcurrentReaders=%u at end of test\n", g_cConcurrentReaders));
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwDelete(&g_CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    if (RTTestErrorCount(g_hTest) != cErrorsBefore)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTThreadSleep(100);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    /*
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     * Collect and display the results.
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync     */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t cItrTotal = acIterations[0];
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    for (i = 1; i < cThreads; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        cItrTotal += acIterations[i];
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t cItrNormal = cItrTotal / cThreads;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t cItrMinOK = cItrNormal / 20; /* 5% */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    uint64_t cItrMaxDeviation = 0;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    for (i = 0; i < cThreads; i++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        uint64_t cItrDelta = RT_ABS((int64_t)(acIterations[i] - cItrNormal));
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (acIterations[i] < cItrMinOK)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            RTTestFailed(g_hTest, "Thread %u did less than 5%% of the iterations - %llu (it) vs. %llu (5%%) - %llu%%\n",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                         i, acIterations[i], cItrMinOK, cItrDelta * 100 / cItrNormal);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        else if (cItrDelta > cItrNormal / 2)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                         "Warning! Thread %u deviates by more than 50%% - %llu (it) vs. %llu (avg) - %llu%%\n",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                         i, acIterations[i], cItrNormal, cItrDelta * 100 / cItrNormal);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (cItrDelta > cItrMaxDeviation)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            cItrMaxDeviation = cItrDelta;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //             "Threads: %u  Total: %llu  Per Sec: %llu  Avg: %llu ns  Max dev: %llu%%\n",
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //             cThreads,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //             cItrTotal,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //             cItrTotal / cSeconds,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //             ElapsedNS / cItrTotal,
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //             cItrMaxDeviation * 100 / cItrNormal
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //             );
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    //
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTestValue(g_hTest, "Thruput", cItrTotal * UINT32_C(1000000000) / ElapsedNS, RTTESTUNIT_CALLS_PER_SEC);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTestValue(g_hTest, "Max diviation", cItrMaxDeviation * 100 / cItrNormal, RTTESTUNIT_PCT);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync}
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic void TestNegative(void)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync{
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTestSub(g_hTest, "Negative");
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    bool fSavedAssertQuiet    = RTAssertSetQuiet(true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    bool fSavedAssertMayPanic = RTAssertSetMayPanic(false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    bool fSavedLckValEnabled  = RTLockValidatorSetEnabled(false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTCRITSECTRW CritSectRw;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RETV(g_hTest, RTCritSectRwInit(&CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VERR_NOT_OWNER);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VERR_NOT_OWNER);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VERR_NOT_OWNER);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwEnterShared(&CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VERR_WRONG_ORDER); /* cannot release the final write before the reads. */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC(g_hTest, RTCritSectRwDelete(&CritSectRw), VINF_SUCCESS);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTLockValidatorSetEnabled(fSavedLckValEnabled);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTAssertSetMayPanic(fSavedAssertMayPanic);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTAssertSetQuiet(fSavedAssertQuiet);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync}
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncstatic bool Test1(void)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync{
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTestSub(g_hTest, "Basics");
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTCRITSECTRW CritSectRw;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwInit(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsInitialized(&CritSectRw), false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    for (int iRun = 0; iRun < 3; iRun++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 1, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 0, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == true, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 2, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 0, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == true, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 2, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 1, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == true, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 3, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 1, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == true, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        /*  midway  */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 2, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 1, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == true, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 2, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 0, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == true, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 1, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 0, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == true, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriteRecursion(&CritSectRw) == 0, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwGetWriterReadRecursion(&CritSectRw) == 0, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsWriteOwner(&CritSectRw) == false, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwTryEnterShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveShared(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwLeaveExcl(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RET(g_hTest, RTCritSectRwIsInitialized(&CritSectRw), false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RC_RET(g_hTest, RTCritSectRwDelete(&CritSectRw), VINF_SUCCESS, false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTEST_CHECK_RET(g_hTest, !RTCritSectRwIsInitialized(&CritSectRw), false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    return true;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync}
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsyncint main(int argc, char **argv)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync{
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    int rc = RTTestInitAndCreate("tstRTCritSectRw", &g_hTest);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    if (rc)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        return 1;
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    RTTestBanner(g_hTest);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    if (Test1())
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        if (argc == 1)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            TestNegative();
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            /*    threads, seconds, writePercent,  yield,  quiet */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      1,       1,            0,   true,  false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      1,       1,            1,   true,  false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      1,       1,            5,   true,  false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      2,       1,            3,   true,  false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(     10,       1,            5,   true,  false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(     10,      10,           10,  false,  false);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "benchmarking...\n");
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            for (unsigned cThreads = 1; cThreads < 32; cThreads++)
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync                Test4(cThreads,  2,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            /** @todo add a testcase where some stuff times out. */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        else
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        {
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            /*    threads, seconds, writePercent,  yield,  quiet */
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "benchmarking...\n");
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      1,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      1,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      1,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      2,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      2,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      2,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      3,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      3,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync            Test4(      3,       3,            1,  false,   true);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync        }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    }
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync    return RTTestSummaryAndDestroy(g_hTest);
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync}
040082187f3f86940a3a876e4dd478bd8581b36fvboxsync