Hello All,
Here are my latest lab findings on Qt:
cppstub.cpp : contains only one function
=========
void * operator new( size_t nSize )
{
if( nSize == 0 )
{
nSize = 1;
}
return hb_xgrab( nSize );
}
hbqt/.../Q*.cpp
===========
QT_G_FUNC( hbqt_gcRelease_QWidget )
{
QGC_POINTER_QWidget * p = ( QGC_POINTER_QWidget * ) Cargo;
if( p && p->bNew )
{
if( p->ph && p->pq )
{
const QMetaObject * m = ( ( QObject * ) p->ph )->metaObject();
if( ( QString ) m->className() != ( QString ) "QObject" )
{
HB_TRACE( HB_TR_DEBUG, ( "YES_rel_QWidget /.\\ ph=%p pq=%p",
p->ph, (void *)(p->pq) ) );
delete ( ( QWidget * ) p->ph );
////////////////////////////////////
hb_xfree( p->ph );
////////////////////////////////////
HB_TRACE( HB_TR_DEBUG, ( "YES_rel_QWidget \\./ ph=%p pq=%p",
p->ph, (void *)(p->pq) ) );
p->ph = NULL;
}
else
{
HB_TRACE( HB_TR_DEBUG, ( "NO__rel_QWidgetph=%p pq=%p", p->ph,
(void *)(p->pq) ) );
}
}
else
{
HB_TRACE( HB_TR_DEBUG, ( "DEL_rel_QWidget : Object already
deleted!" ) );
}
}
else
{
HB_TRACE( HB_TR_DEBUG, ( "PTR_rel_QWidget : Object not created
with new()" ) );
p->ph = NULL;
}
}
Produces almost 0 unreleased memory blocks.
I have tested extensively and have found no issues.
demoXBP.exe exits properly, consumes very little mem if new dialogs are
opened and closed.
hbXBP destroys objects - child first then parent.
demoQT exits with GPF - hb_xfree() called with invalid pointer.
demoQT does not release objects per parent-child hirarchy.
hbIDE is releasing with a GPF but I know what is possible reason, am after
that.
Overall this is a step forward in understanding why Qt is not memory is kept
consumed.
Hope someone will extend experiments.
-----
enjoy hbIDEing...
Pritpal Bedi
_a_student_of_software_analysis_&_design_
--
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