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/* $Id: tstTime-4.cpp $ */
/** @file
* IPRT Testcase - Simple RTTime vs. RTTimeSystem test.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* 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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