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/* $Id: tstTime-4.cpp $ */
/** @file
* IPRT Testcase - Simple RTTime vs. RTTimeSystem test.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/time.h>
#include <iprt/stream.h>
#include <iprt/initterm.h>
#include <iprt/thread.h>
#include <VBox/sup.h>
int main()
{
unsigned cErrors = 0;
RTR3InitExeNoArguments(RTR3INIT_FLAGS_SUPLIB);
RTPrintf("tstTime-4: TESTING...\n");
/*
* Check that RTTimeSystemNanoTS doesn't go backwards and
* isn't too far from RTTimeNanoTS().
*/
RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield(); /* warmup */
const uint64_t SysStartTS = RTTimeSystemNanoTS();
const uint64_t GipStartTS = RTTimeNanoTS();
uint64_t SysPrevTS, GipPrevTS;
do
{
SysPrevTS = RTTimeSystemNanoTS();
GipPrevTS = RTTimeNanoTS();
if (SysPrevTS < SysStartTS)
{
cErrors++;
RTPrintf("tstTime-4: Bad Sys time!\n");
}
if (GipPrevTS < GipStartTS)
{
cErrors++;
RTPrintf("tstTime-4: Bad Gip time!\n");
}
uint64_t Delta = GipPrevTS > SysPrevTS ? GipPrevTS - SysPrevTS :
SysPrevTS - GipPrevTS;
if (Delta > 100000000ULL /* 100 ms */ )
{
cErrors++;
RTPrintf("tstTime-4: Delta=%llu (GipPrevTS=%llu, SysPrevTS=%llu)!\n", Delta, GipPrevTS, SysPrevTS);
}
} while (SysPrevTS - SysStartTS < 2000000000 /* 2s */);
if (!cErrors)
RTPrintf("tstTime-4: SUCCESS\n");
else
RTPrintf("tstTime-4: FAILURE - %d errors\n", cErrors);
return !!cErrors;
}
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