mirror of
https://github.com/ElvishArtisan/rivendell.git
synced 2025-10-31 22:24:02 +01:00
85 lines
1.9 KiB
C++
85 lines
1.9 KiB
C++
// timer_test.cpp
|
|
//
|
|
// Test QTimer Accuracy
|
|
//
|
|
// (C) Copyright 2013,2016 Fred Gleason <fredg@paravelsystems.com>
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License version 2 as
|
|
// published by the Free Software Foundation.
|
|
//
|
|
// 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, write to the Free Software
|
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
//
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
|
|
#include <qapplication.h>
|
|
|
|
#include <timer_test.h>
|
|
|
|
MainObject::MainObject(QObject *parent)
|
|
: QObject(parent)
|
|
{
|
|
//
|
|
// Timer
|
|
//
|
|
test_timer=new QTimer(this);
|
|
connect(test_timer,SIGNAL(timeout()),this,SLOT(timeoutData()));
|
|
|
|
//
|
|
// Start Run
|
|
//
|
|
test_interval=60000;
|
|
if(gettimeofday(&test_start_tv,NULL) !=0) {
|
|
perror("gettimeofday");
|
|
}
|
|
test_timer->start(test_interval,true);
|
|
}
|
|
|
|
|
|
void MainObject::timeoutData()
|
|
{
|
|
//
|
|
// Calculate Result
|
|
//
|
|
if(gettimeofday(&test_end_tv,NULL) !=0) {
|
|
perror("gettimeofday");
|
|
}
|
|
double expected=(double)test_interval/1000.0;
|
|
double got=Time(&test_end_tv)-Time(&test_start_tv);
|
|
|
|
printf("Expected: %12.3lf Got: %12.3lf Diff: %8.3lf%%\n",
|
|
expected,got,100.0*got/expected);
|
|
|
|
//
|
|
// Start Next Run
|
|
//
|
|
test_interval*=2;
|
|
if(gettimeofday(&test_start_tv,NULL) !=0) {
|
|
perror("gettimeofday");
|
|
}
|
|
test_timer->start(test_interval,true);
|
|
}
|
|
|
|
|
|
double MainObject::Time(struct timeval *tv)
|
|
{
|
|
return (double)tv->tv_sec+(double)tv->tv_usec/1000000.0;
|
|
}
|
|
|
|
|
|
int main(int argc,char *argv[])
|
|
{
|
|
QApplication a(argc,argv,false);
|
|
new MainObject();
|
|
return a.exec();
|
|
}
|