libvips/libsrc/iofuncs/time.c

113 lines
2.4 KiB
C

/* Time execution of pipelines.
*
* 20/7/93 JC
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <stdarg.h>
#include <time.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include <vips/time.h>
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif /*WITH_DMALLOC*/
/* Allocate a new time struct and fill in start values.
*/
static int
new_time( IMAGE *im )
{
struct time_info *tim = IM_NEW( im, struct time_info );
if( !tim )
return( -1 );
if( im->time ) {
im_errormsg( "new_time: sanity failure" );
return( -1 );
}
tim->im = im;
tim->start = time( NULL );
tim->run = 0;
tim->eta = 0;
tim->tpels = (gint64) im->Xsize * im->Ysize;
tim->npels = 0;
tim->percent = 0;
im->time = tim;
return( 0 );
}
/* A new tile has been computed. Update time_info.
*/
static int
update_time( struct time_info *tim, int w, int h )
{
float prop;
tim->run = time( NULL ) - tim->start;
tim->npels += w * h;
prop = (float) tim->npels / (float) tim->tpels;
tim->percent = 100 * prop;
if( prop > 0 )
tim->eta = (1.0 / prop) * tim->run - tim->run;
return( 0 );
}
/* Handle eval callbacks. w and h are the size of the tile we made this time.
*/
int
im__handle_eval( IMAGE *im, int w, int h )
{
if( im->evalfns ) {
if( !im->time )
if( new_time( im ) )
return( -1 );
if( update_time( im->time, w, h ) )
return( -1 );
if( im__trigger_callbacks( im->evalfns ) )
return( -1 );
}
return( 0 );
}