mirror of
https://github.com/ElvishArtisan/rivendell.git
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698b475933
* Removed all CVS tags. * Removed 'const char *name' parameter from all QObject contructors.
84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
// timer_test.cpp
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//
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// Test QTimer Accuracy
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//
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// (C) Copyright 2013,2016 Fred Gleason <fredg@paravelsystems.com>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#include <errno.h>
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#include <qapplication.h>
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#include <timer_test.h>
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MainObject::MainObject(QObject *parent)
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: QObject(parent)
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{
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//
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// Timer
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//
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test_timer=new QTimer(this);
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connect(test_timer,SIGNAL(timeout()),this,SLOT(timeoutData()));
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//
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// Start Run
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//
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test_interval=60000;
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if(gettimeofday(&test_start_tv,NULL) !=0) {
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perror("gettimeofday");
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}
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test_timer->start(test_interval,true);
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}
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void MainObject::timeoutData()
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{
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//
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// Calculate Result
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//
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if(gettimeofday(&test_end_tv,NULL) !=0) {
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perror("gettimeofday");
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}
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double expected=(double)test_interval/1000.0;
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double got=Time(&test_end_tv)-Time(&test_start_tv);
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printf("Expected: %12.3lf Got: %12.3lf Diff: %8.3lf%%\n",
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expected,got,100.0*got/expected);
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//
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// Start Next Run
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//
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test_interval*=2;
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if(gettimeofday(&test_start_tv,NULL) !=0) {
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perror("gettimeofday");
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}
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test_timer->start(test_interval,true);
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}
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double MainObject::Time(struct timeval *tv)
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{
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return (double)tv->tv_sec+(double)tv->tv_usec/1000000.0;
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}
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int main(int argc,char *argv[])
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{
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QApplication a(argc,argv,false);
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new MainObject();
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return a.exec();
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}
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