tstTimerLR.cpp revision 5eabf773597082761832bc0a32b3660e8771f9f1
/* $Id$ */
/** @file
* IPRT Testcase - Low Resolution Timers.
*/
/*
* Copyright (C) 2006-2008 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <iprt/initterm.h>
/*******************************************************************************
* Global Variables *
*******************************************************************************/
static volatile unsigned gcTicks;
{
gcTicks++;
if (gu64Prev)
{
}
}
int main()
{
/*
* Init runtime
*/
unsigned cErrors = 0;
if (RT_FAILURE(rc))
{
return 1;
}
/*
* Check that the clock is reliable.
*/
RTPrintf("tstTimer: TESTING - RTTimeNanoTS() for 2sec\n");
uint64_t cIterations = 0;
do
{
{
RTPrintf("tstTimer: FAILURE - RTTimeNanoTS() is unreliable. uTS=%RU64 uTSLast=%RU64\n", uTS, uTSLast);
cErrors++;
}
{
RTPrintf("tstTimer: FAILURE - RTTimeNanoTS() is unreliable. cIterations=%RU64 uTS=%RU64 uTSBegin=%RU64\n", cIterations, uTS, uTSBegin);
return 1;
}
{
RTPrintf("tstTimer: FAILURE - uTSMillies=%RI64 uTSBegin=%RU64 uTSLast=%RU64 uTSDiff=%RU64\n",
cErrors++;
}
if (!cErrors)
RTPrintf("tstTimer: OK - RTTimeNanoTS()\n");
/*
* Tests.
*/
static struct
{
unsigned uMilliesInterval;
unsigned uMilliesWait;
unsigned cLower;
unsigned cUpper;
} aTests[] =
{
{ 1000, 2500, 3, 3 }, /* (keep in mind the immediate first tick) */
{ 250, 2000, 6, 10 },
{ 100, 2000, 17, 23 },
};
unsigned i = 0;
for (i = 0; i < RT_ELEMENTS(aTests); i++)
{
//aTests[i].cLower = (aTests[i].uMilliesWait - aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
//aTests[i].cUpper = (aTests[i].uMilliesWait + aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
RTPrintf("\n"
"tstTimer: TESTING - %d ms interval, %d ms wait, expects %d-%d ticks.\n",
/*
* Start timer which ticks every 10ms.
*/
gcTicks = 0;
gu64Max = 0;
gu64Prev = 0;
rc = RTTimerLRCreateEx(&hTimerLR, aTests[i].uMilliesInterval * (uint64_t)1000000, 0, TimerLRCallback, NULL);
if (RT_FAILURE(rc))
{
cErrors++;
continue;
}
/*
* Start the timer an actively wait for it for the period requested.
*/
if (RT_FAILURE(rc))
{
cErrors++;
}
/* nothing */;
/* don't stop it, destroy it because there are potential races in destroying an active timer. */
if (RT_FAILURE(rc))
{
cErrors++;
}
/* Check that it really stopped. */
{
RTPrintf("tstTimer: FAILURE - RTTimerLRDestroy() didn't really stop the timer! gcTicks=%d cTicks=%d\n", gcTicks, cTicks);
cErrors++;
continue;
}
/*
* Check the number of ticks.
*/
{
RTPrintf("tstTimer: FAILURE - Too few ticks gcTicks=%d (expected %d-%d)", gcTicks, aTests[i].cUpper, aTests[i].cLower);
cErrors++;
}
{
RTPrintf("tstTimer: FAILURE - Too many ticks gcTicks=%d (expected %d-%d)", gcTicks, aTests[i].cUpper, aTests[i].cLower);
cErrors++;
}
else
}
/*
* Test multiple timers running at once.
*/
/** @todo multiple LR timer testcase. */
/*
* Summary.
*/
if (!cErrors)
RTPrintf("tstTimer: SUCCESS\n");
else
return !!cErrors;
}