libvips/libsrc/iofuncs/time.c
2007-11-07 16:53:01 +00:00

174 lines
3.4 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
*/
/*
#define DEBUG
*/
#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 <vips/vips.h>
#include <vips/internal.h>
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif /*WITH_DMALLOC*/
int
im__time_destroy( IMAGE *im )
{
if( im->time ) {
#ifdef DEBUG
printf( "im__time_destroy: %s\n", im->filename );
#endif /*DEBUG*/
g_timer_destroy( im->time->start );
im_free( im->time );
im->time = NULL;
}
return( 0 );
}
/* Attach a new time struct and fill in start values.
*/
int
time_add( IMAGE *im )
{
im_time_t *time;
if( im__time_destroy( im ) ||
!(time = IM_NEW( NULL, im_time_t )) )
return( -1 );
#ifdef DEBUG
printf( "time_add: %s\n", im->filename );
#endif /*DEBUG*/
time->im = im;
time->start = g_timer_new();
time->run = 0;
time->eta = 0;
time->tpels = (gint64) im->Xsize * im->Ysize;
time->npels = 0;
time->percent = 0;
im->time = time;
return( 0 );
}
/* A new tile has been computed. Update time_info.
*/
static int
update_time( im_time_t *time, int w, int h )
{
float prop;
time->run = g_timer_elapsed( time->start, NULL );
time->npels += w * h;
prop = (float) time->npels / (float) time->tpels;
time->percent = 100 * prop;
if( prop > 0 )
time->eta = (1.0 / prop) * time->run - time->run;
return( 0 );
}
int
im__start_eval( IMAGE *im )
{
im_image_sanity( im );
if( im->progress ) {
#ifdef DEBUG
printf( "im__start_eval: %s\n", im->filename );
#endif /*DEBUG*/
im_image_sanity( im->progress );
if( time_add( im->progress ) )
return( -1 );
if( im__trigger_callbacks( im->progress->evalstartfns ) )
return( -1 );
}
return( 0 );
}
/* Handle eval callbacks. w and h are the size of the tile we made this time.
* We signal progress on the ->progress IMAGE, see im_add_eval_callback(). We
* assume there's no geometry change between adding the feedback request and
* evaling the image.
*/
int
im__handle_eval( IMAGE *im, int w, int h )
{
if( im->progress ) {
if( update_time( im->progress->time, w, h ) )
return( -1 );
if( im__trigger_callbacks( im->progress->evalfns ) )
return( -1 );
}
return( 0 );
}
int
im__end_eval( IMAGE *im )
{
im_image_sanity( im );
if( im->progress ) {
#ifdef DEBUG
printf( "im__end_eval: %s\n", im->filename );
#endif /*DEBUG*/
im_image_sanity( im->progress );
if( im__trigger_callbacks( im->progress->evalendfns ) )
return( -1 );
im__time_destroy( im->progress );
}
return( 0 );
}