Runtime/testcase/tstTimerLR.cpp

d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync/* $Id$ */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync/** @file
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * IPRT Testcase - Low Resolution Timers.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync/*
c58f1213e628a545081c70e26c6b67a841cff880vboxsync * Copyright (C) 2006-2012 Oracle Corporation
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync *
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * available from http://www.virtualbox.org. This file is free software;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * you can redistribute it and/or modify it under the terms of the GNU
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * General Public License (GPL) as published by the Free Software
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync *
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * The contents of this file may alternatively be used under the terms
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * of the Common Development and Distribution License Version 1.0
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * VirtualBox OSE distribution, in which case the provisions of the
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * CDDL are applicable instead of those of the GPL.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync *
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * You may elect to license modified versions of this file under the
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync * terms and conditions of either the GPL or the CDDL or both.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync/*******************************************************************************
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync*   Header Files                                                               *
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync*******************************************************************************/
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync#include <iprt/timer.h>
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync#include <iprt/time.h>
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync#include <iprt/thread.h>
5eabf773597082761832bc0a32b3660e8771f9f1vboxsync#include <iprt/initterm.h>
230bd8589bba39933ac5ec21482d6186d675e604vboxsync#include <iprt/message.h>
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync#include <iprt/stream.h>
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync#include <iprt/err.h>
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync/*******************************************************************************
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync*   Global Variables                                                           *
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync*******************************************************************************/
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsyncstatic volatile unsigned gcTicks;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsyncstatic volatile uint64_t gu64Min;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsyncstatic volatile uint64_t gu64Max;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsyncstatic volatile uint64_t gu64Prev;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsyncstatic DECLCALLBACK(void) TimerLRCallback(RTTIMERLR hTimerLR, void *pvUser, uint64_t iTick)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync{
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    gcTicks++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    const uint64_t u64Now = RTTimeNanoTS();
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    if (gu64Prev)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        const uint64_t u64Delta = u64Now - gu64Prev;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (u64Delta < gu64Min)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            gu64Min = u64Delta;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (u64Delta > gu64Max)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            gu64Max = u64Delta;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    gu64Prev = u64Now;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync}
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsyncint main()
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync{
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     * Init runtime
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    unsigned cErrors = 0;
230bd8589bba39933ac5ec21482d6186d675e604vboxsync    int rc = RTR3InitExeNoArguments(0);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    if (RT_FAILURE(rc))
230bd8589bba39933ac5ec21482d6186d675e604vboxsync        return RTMsgInitFailure(rc);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     * Check that the clock is reliable.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    RTPrintf("tstTimer: TESTING - RTTimeNanoTS() for 2sec\n");
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    uint64_t uTSMillies = RTTimeMilliTS();
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    uint64_t uTSBegin = RTTimeNanoTS();
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    uint64_t uTSLast = uTSBegin;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    uint64_t uTSDiff;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    uint64_t cIterations = 0;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    do
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        uint64_t uTS = RTTimeNanoTS();
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (uTS < uTSLast)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: FAILURE - RTTimeNanoTS() is unreliable. uTS=%RU64 uTSLast=%RU64\n", uTS, uTSLast);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (++cIterations > (2*1000*1000*1000))
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: FAILURE - RTTimeNanoTS() is unreliable. cIterations=%RU64 uTS=%RU64 uTSBegin=%RU64\n", cIterations, uTS, uTSBegin);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            return 1;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        uTSLast = uTS;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        uTSDiff = uTSLast - uTSBegin;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    } while (uTSDiff < (2*1000*1000*1000));
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    uTSMillies = RTTimeMilliTS() - uTSMillies;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    if (uTSMillies >= 2500 || uTSMillies <= 1500)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTPrintf("tstTimer: FAILURE - uTSMillies=%RI64 uTSBegin=%RU64 uTSLast=%RU64 uTSDiff=%RU64\n",
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync                 uTSMillies, uTSBegin, uTSLast, uTSDiff);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    if (!cErrors)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTPrintf("tstTimer: OK      - RTTimeNanoTS()\n");
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     * Tests.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    static struct
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        unsigned uMilliesInterval;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        unsigned uMilliesWait;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        unsigned cLower;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        unsigned cUpper;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    } aTests[] =
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        { 1000, 2500, 3,   3 }, /* (keep in mind the immediate first tick) */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {  250, 2000, 6,  10 },
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {  100, 2000, 17, 23 },
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    };
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    unsigned i = 0;
e9a584ee0777ab2612e206eeec264ccb1a8ce333vboxsync    for (i = 0; i < RT_ELEMENTS(aTests); i++)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        //aTests[i].cLower = (aTests[i].uMilliesWait - aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        //aTests[i].cUpper = (aTests[i].uMilliesWait + aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTPrintf("\n"
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync                 "tstTimer: TESTING - %d ms interval, %d ms wait, expects %d-%d ticks.\n",
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync                 aTests[i].uMilliesInterval, aTests[i].uMilliesWait, aTests[i].cLower, aTests[i].cUpper);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync         * Start timer which ticks every 10ms.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync         */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        gcTicks = 0;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTTIMERLR hTimerLR;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        gu64Max = 0;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        gu64Min = UINT64_MAX;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        gu64Prev = 0;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        rc = RTTimerLRCreateEx(&hTimerLR, aTests[i].uMilliesInterval * (uint64_t)1000000, 0, TimerLRCallback, NULL);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (RT_FAILURE(rc))
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("RTTimerLRCreateEX(,%u*1M,,,) -> %d\n", aTests[i].uMilliesInterval, rc);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            continue;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync         * Start the timer an actively wait for it for the period requested.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync         */
8f2f51347c7b5fe7c697debe7c2e46b46dd16489vboxsync        uTSBegin = RTTimeNanoTS();
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        rc = RTTimerLRStart(hTimerLR, 0);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (RT_FAILURE(rc))
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: FAILURE - RTTimerLRStart() -> %Rrc\n", rc);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        while (RTTimeNanoTS() - uTSBegin < (uint64_t)aTests[i].uMilliesWait * 1000000)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            /* nothing */;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        /* don't stop it, destroy it because there are potential races in destroying an active timer. */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        rc = RTTimerLRDestroy(hTimerLR);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (RT_FAILURE(rc))
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: FAILURE - RTTimerLRDestroy() -> %d gcTicks=%d\n", rc, gcTicks);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        uint64_t uTSEnd = RTTimeNanoTS();
8f2f51347c7b5fe7c697debe7c2e46b46dd16489vboxsync        uTSDiff = uTSEnd - uTSBegin;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTPrintf("uTS=%RI64 (%RU64 - %RU64)\n", uTSDiff, uTSBegin, uTSEnd);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        /* Check that it really stopped. */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        unsigned cTicks = gcTicks;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTThreadSleep(aTests[i].uMilliesInterval * 2);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (gcTicks != cTicks)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: FAILURE - RTTimerLRDestroy() didn't really stop the timer! gcTicks=%d cTicks=%d\n", gcTicks, cTicks);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            continue;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync         * Check the number of ticks.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync         */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        if (gcTicks < aTests[i].cLower)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: FAILURE - Too few ticks gcTicks=%d (expected %d-%d)", gcTicks, aTests[i].cUpper, aTests[i].cLower);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        else if (gcTicks > aTests[i].cUpper)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        {
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: FAILURE - Too many ticks gcTicks=%d (expected %d-%d)", gcTicks, aTests[i].cUpper, aTests[i].cLower);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            cErrors++;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        else
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync            RTPrintf("tstTimer: OK      - gcTicks=%d",  gcTicks);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTPrintf(" min=%RU64 max=%RU64\n", gu64Min, gu64Max);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    }
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
a7d199151f468f894181e8d50d3e202c2a010702vboxsync    /*
a7d199151f468f894181e8d50d3e202c2a010702vboxsync     * Test changing the interval dynamically
a7d199151f468f894181e8d50d3e202c2a010702vboxsync     */
a7d199151f468f894181e8d50d3e202c2a010702vboxsync    RTPrintf("\n"
a7d199151f468f894181e8d50d3e202c2a010702vboxsync             "tstTimer: Testing dynamic changes of timer interval...\n");
a7d199151f468f894181e8d50d3e202c2a010702vboxsync    do
a7d199151f468f894181e8d50d3e202c2a010702vboxsync    {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        RTTIMERLR hTimerLR;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        rc = RTTimerLRCreateEx(&hTimerLR, aTests[0].uMilliesInterval * (uint64_t)1000000, 0, TimerLRCallback, NULL);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        if (RT_FAILURE(rc))
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        {
55a349ce0fe5935ea7e038fac442a85c226f839cvboxsync            RTPrintf("RTTimerLRCreateEX(,%u*1M,,,) -> %d\n", aTests[0].uMilliesInterval, rc);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            cErrors++;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            continue;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        for (i = 0; i < RT_ELEMENTS(aTests); i++)
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            RTPrintf("\n"
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                     "tstTimer: TESTING - %d ms interval, %d ms wait, expects %d-%d ticks.\n",
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                     aTests[i].uMilliesInterval, aTests[i].uMilliesWait, aTests[i].cLower, aTests[i].cUpper);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            gcTicks = 0;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            gu64Max = 0;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            gu64Min = UINT64_MAX;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            gu64Prev = 0;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            /*
a7d199151f468f894181e8d50d3e202c2a010702vboxsync             * Start the timer an actively wait for it for the period requested.
a7d199151f468f894181e8d50d3e202c2a010702vboxsync             */
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            uTSBegin = RTTimeNanoTS();
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            if (i == 0)
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                rc = RTTimerLRStart(hTimerLR, 0);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                if (RT_FAILURE(rc))
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                    RTPrintf("tstTimer: FAILURE - RTTimerLRStart() -> %Rrc\n", rc);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                    cErrors++;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            else
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                rc = RTTimerLRChangeInterval(hTimerLR, aTests[i].uMilliesInterval * (uint64_t)1000000);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                if (RT_FAILURE(rc))
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                    RTPrintf("tstTimer: FAILURE - RTTimerLRChangeInterval() -> %d gcTicks=%d\n", rc, gcTicks);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                    cErrors++;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            while (RTTimeNanoTS() - uTSBegin < (uint64_t)aTests[i].uMilliesWait * 1000000)
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                /* nothing */;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            uint64_t uTSEnd = RTTimeNanoTS();
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            uTSDiff = uTSEnd - uTSBegin;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            RTPrintf("uTS=%RI64 (%RU64 - %RU64)\n", uTSDiff, uTSBegin, uTSEnd);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            /*
a7d199151f468f894181e8d50d3e202c2a010702vboxsync             * Check the number of ticks.
a7d199151f468f894181e8d50d3e202c2a010702vboxsync             */
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            if (gcTicks < aTests[i].cLower)
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                RTPrintf("tstTimer: FAILURE - Too few ticks gcTicks=%d (expected %d-%d)\n", gcTicks, aTests[i].cUpper, aTests[i].cLower);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                cErrors++;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            else if (gcTicks > aTests[i].cUpper)
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                RTPrintf("tstTimer: FAILURE - Too many ticks gcTicks=%d (expected %d-%d)\n", gcTicks, aTests[i].cUpper, aTests[i].cLower);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                cErrors++;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            else
a7d199151f468f894181e8d50d3e202c2a010702vboxsync                RTPrintf("tstTimer: OK      - gcTicks=%d\n",  gcTicks);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            // RTPrintf(" min=%RU64 max=%RU64\n", gu64Min, gu64Max);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        /* don't stop it, destroy it because there are potential races in destroying an active timer. */
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        rc = RTTimerLRDestroy(hTimerLR);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        if (RT_FAILURE(rc))
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        {
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            RTPrintf("tstTimer: FAILURE - RTTimerLRDestroy() -> %d gcTicks=%d\n", rc, gcTicks);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync            cErrors++;
a7d199151f468f894181e8d50d3e202c2a010702vboxsync        }
a7d199151f468f894181e8d50d3e202c2a010702vboxsync    } while (0);
a7d199151f468f894181e8d50d3e202c2a010702vboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     * Test multiple timers running at once.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    /** @todo multiple LR timer testcase. */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    /*
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     * Summary.
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync     */
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    if (!cErrors)
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTPrintf("tstTimer: SUCCESS\n");
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    else
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync        RTPrintf("tstTimer: FAILURE %d errors\n", cErrors);
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync    return !!cErrors;
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync}
d1ae44110ca869b6cb4a708dc6d676e10f4167bavboxsync