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/*!
* \file
*
* \author Peter Harvey <pharvey@peterharvey.org>
* \author \sa AUTHORS file
* \version 2
* \date 2007
* \license Copyright unixODBC Project 2007-2008, LGPL
*/
#include "CMonitorHandleCounts.h"
CMonitorHandleCounts::CMonitorHandleCounts( QWidget *pwidgetParent )
: QWidget( pwidgetParent )
{
setToolTip( tr( "number of active ODBC handles" ) );
setWhatsThis( tr( "This shows the number of active ODBC handles at any given moment. The values are automatically updated frequently. This is useful for debugging and performance monitoring." ) );
// lets assume, for the moment, that we can get monitoring info from DM...
bEnabled = true;
QGridLayout *pLayout = new QGridLayout;
// setup labels to show current values as simple numbers...
{
plabelEnvironment = new QLabel( "0" );
plabelConnection = new QLabel( "0" );
plabelStatement = new QLabel( "0" );
plabelDescriptor = new QLabel( "0" );
pLayout->addWidget( plabelEnvironment, 0, 0 );
pLayout->addWidget( plabelConnection, 0, 1 );
pLayout->addWidget( plabelStatement, 0, 2 );
pLayout->addWidget( plabelDescriptor, 0, 3 );
}
// setup sliders to show current values in an interesting manner...
{
// set default scale for sliders...
nSliderMax = 10;
psliderEnvironment = new QSlider;
psliderConnection = new QSlider;
psliderStatement = new QSlider;
psliderDescriptor = new QSlider;
psliderEnvironment->setInvertedAppearance( true );
psliderConnection->setInvertedAppearance( true );
psliderStatement->setInvertedAppearance( true );
psliderDescriptor->setInvertedAppearance( true );
// psliderEnvironment->setTickmarks( QSlider::Both );
// psliderConnection->setTickmarks( QSlider::Both );
// psliderStatement->setTickmarks( QSlider::Both );
// psliderDescriptor->setTickmarks( QSlider::Both );
psliderEnvironment->setMinimum( 0-nSliderMax );
psliderConnection->setMinimum( 0-nSliderMax );
psliderStatement->setMinimum( 0-nSliderMax );
psliderDescriptor->setMinimum( 0-nSliderMax );
psliderEnvironment->setMaximum( 0 );
psliderConnection->setMaximum( 0 );
psliderStatement->setMaximum( 0 );
psliderDescriptor->setMaximum( 0 );
pLayout->addWidget( psliderEnvironment, 1, 0 );
pLayout->addWidget( psliderConnection, 1, 1 );
pLayout->addWidget( psliderStatement, 1, 2 );
pLayout->addWidget( psliderDescriptor, 1, 3 );
}
// setup some labels to show what each slider is for...
{
pLayout->addWidget( new QLabel( tr( "Env" ) ), 2, 0 );
pLayout->addWidget( new QLabel( tr( "Con" ) ), 2, 1 );
pLayout->addWidget( new QLabel( tr( "Sta" ) ), 2, 2 );
pLayout->addWidget( new QLabel( tr( "Des" ) ), 2, 3 );
}
// get timer going...
{
hStats = 0;
pTimer = new QTimer( this );
connect( pTimer, SIGNAL(timeout()), SLOT(slotLoad()) );
pTimer->start( 2000 ); // 1000 = 1 second
}
// adopt our layout...
setLayout( pLayout );
}
CMonitorHandleCounts::~CMonitorHandleCounts()
{
if ( hStats )
uodbc_close_stats( hStats );
}
void CMonitorHandleCounts::slotLoad()
{
// only bother with this if we are visible...
if ( !isVisible() )
return;
if ( !bEnabled )
return;
// init coms with DM but don't even bother the DM until (if) we become visible...
if ( !hStats )
{
if ( uodbc_open_stats( &hStats, UODBC_STATS_READ ) != 0 )
{
// char szError[512];
// QMessageBox::critical( this, tr( "Monitor Handle Counts" ), QString( tr( "uodbc_open_stats failed\n%1" ) ).arg( uodbc_stats_error( szError, 512 ) ) );
// bEnabled = false;
return;
}
}
// get current handle counts...
{
uodbc_stats_retentry aStats[4];
uodbc_get_stats( hStats, -1, aStats, 4 );
// if ( uodbc_get_stats( hStats, -1, aStats, 4 ) == 4 )
// {
// char szError[512];
// QMessageBox::critical( this, tr( "Monitor Handle Counts" ), QString( tr( "uodbc_get_stats failed\n%1" ) ).arg( uodbc_stats_error( szError, 512 ) ) );
// bEnabled = false;
// return;
// }
// bump up our scale for the sliders as needed...
if ( aStats[0].value.l_value > nSliderMax )
nSliderMax = aStats[0].value.l_value;
if ( aStats[1].value.l_value > nSliderMax )
nSliderMax = aStats[1].value.l_value;
if ( aStats[2].value.l_value > nSliderMax )
nSliderMax = aStats[2].value.l_value;
if ( aStats[3].value.l_value > nSliderMax )
nSliderMax = aStats[3].value.l_value;
// update UI bits...
plabelEnvironment->setText( QString( "%1" ).arg( aStats[0].value.l_value ) );
psliderEnvironment->setMinimum( 0-nSliderMax );
psliderEnvironment->setValue( 0-aStats[0].value.l_value );
plabelConnection->setText( QString( "%1" ).arg( aStats[1].value.l_value ) );
psliderConnection->setMinimum( 0-nSliderMax );
psliderConnection->setValue( 0-aStats[1].value.l_value );
plabelStatement->setText( QString( "%1" ).arg( aStats[2].value.l_value ) );
psliderStatement->setMinimum( 0-nSliderMax );
psliderStatement->setValue( 0-aStats[2].value.l_value );
plabelDescriptor->setText( QString( "%1" ).arg( aStats[3].value.l_value ) );
psliderDescriptor->setMinimum( 0-nSliderMax );
psliderDescriptor->setValue( 0-aStats[3].value.l_value );
}
}
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