mirror of https://github.com/GNOME/gimp.git
313 lines
7.2 KiB
C
313 lines
7.2 KiB
C
/* The GIMP -- an image manipulation program
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* pixel_processor.c: Copyright (C) 1999 Jay Cox <jaycox@earthlink.net>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU 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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "pixel_processor.h"
|
|
#include "pixel_region.h"
|
|
#include "pixel_regionP.h"
|
|
#include "gimprc.h"
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#ifdef ENABLE_MP
|
|
|
|
#include <pthread.h>
|
|
|
|
#define IF_THREAD(statement) statement
|
|
|
|
#else /* !USE_PTHREADS */
|
|
|
|
#define IF_THREAD(statement)
|
|
|
|
#endif /* !USE_PTHREADS */
|
|
|
|
|
|
|
|
typedef void (*p1_func)(void *, PixelRegion *);
|
|
typedef void (*p2_func)(void *, PixelRegion * ,PixelRegion *);
|
|
typedef void (*p3_func)(void *, PixelRegion * ,PixelRegion *, PixelRegion *);
|
|
typedef void (*p4_func)(void *, PixelRegion * ,PixelRegion *, PixelRegion *,
|
|
PixelRegion *);
|
|
|
|
struct _PixelProcessor
|
|
{
|
|
void *data;
|
|
p_func f;
|
|
PixelRegionIterator *PRI;
|
|
IF_THREAD(pthread_mutex_t mutex;)
|
|
int nthreads;
|
|
int n_regions;
|
|
PixelRegion *r[4];
|
|
|
|
void *progress_report_data;
|
|
ProgressReportFunc progress_report_func;
|
|
};
|
|
|
|
static void *
|
|
do_parallel_regions(PixelProcessor *p_s)
|
|
{
|
|
PixelRegion tr[4];
|
|
int ntiles = 0;
|
|
int i;
|
|
int cont = 1;
|
|
|
|
IF_THREAD(pthread_mutex_lock(&p_s->mutex);)
|
|
if (p_s->nthreads != 0 && p_s->PRI)
|
|
p_s->PRI = (PixelRegionIterator*)pixel_regions_process(p_s->PRI);
|
|
if (p_s->PRI == NULL)
|
|
{
|
|
IF_THREAD(pthread_mutex_unlock(&p_s->mutex);)
|
|
return NULL;
|
|
}
|
|
p_s->nthreads++;
|
|
|
|
do
|
|
{
|
|
for (i = 0; i < p_s->n_regions; i++)
|
|
if (p_s->r[i])
|
|
{
|
|
memcpy(&tr[i], p_s->r[i], sizeof(PixelRegion));
|
|
IF_THREAD(
|
|
if (tr[i].tiles)
|
|
tile_lock(tr[i].curtile);
|
|
)
|
|
}
|
|
IF_THREAD(pthread_mutex_unlock(&p_s->mutex);)
|
|
ntiles++;
|
|
switch(p_s->n_regions)
|
|
{
|
|
case 1:
|
|
((p1_func)p_s->f)(p_s->data,
|
|
p_s->r[0] ? &tr[0] : NULL);
|
|
break;
|
|
case 2:
|
|
((p2_func)p_s->f)(p_s->data,
|
|
p_s->r[0] ? &tr[0] : NULL,
|
|
p_s->r[1] ? &tr[1] : NULL);
|
|
break;
|
|
case 3:
|
|
((p3_func)p_s->f)(p_s->data,
|
|
p_s->r[0] ? &tr[0] : NULL,
|
|
p_s->r[1] ? &tr[1] : NULL,
|
|
p_s->r[2] ? &tr[2] : NULL);
|
|
break;
|
|
case 4:
|
|
((p4_func)p_s->f)(p_s->data,
|
|
p_s->r[0] ? &tr[0] : NULL,
|
|
p_s->r[1] ? &tr[1] : NULL,
|
|
p_s->r[2] ? &tr[2] : NULL,
|
|
p_s->r[3] ? &tr[3] : NULL);
|
|
break;
|
|
default:
|
|
g_message("do_parallel_regions: Bad number of regions %d\n",
|
|
p_s->n_regions);
|
|
}
|
|
IF_THREAD(pthread_mutex_lock(&p_s->mutex);)
|
|
IF_THREAD(
|
|
{
|
|
for (i = 0; i < p_s->n_regions; i++)
|
|
if (p_s->r[i])
|
|
{
|
|
if (tr[i].tiles)
|
|
tile_release(tr[i].curtile, tr[i].dirty);
|
|
}
|
|
})
|
|
if (p_s->progress_report_func)
|
|
if (!p_s->progress_report_func(p_s->progress_report_data,
|
|
p_s->r[0]->x, p_s->r[0]->y,
|
|
p_s->r[0]->w, p_s->r[0]->h))
|
|
cont = 0;
|
|
} while (cont && p_s->PRI &&
|
|
(p_s->PRI = (PixelRegionIterator*)pixel_regions_process(p_s->PRI)));
|
|
p_s->nthreads--;
|
|
/* fprintf(stderr, "processed %d tiles\n", ntiles); */
|
|
IF_THREAD(pthread_mutex_unlock(&p_s->mutex);)
|
|
return NULL;
|
|
}
|
|
|
|
#define MAX_THREADS 30
|
|
|
|
static void
|
|
pixel_regions_do_parallel(PixelProcessor *p_s)
|
|
{
|
|
IF_THREAD(int i;)
|
|
IF_THREAD(int nthreads;)
|
|
IF_THREAD(pthread_t threads[MAX_THREADS];)
|
|
IF_THREAD(pthread_attr_t pthread_attr;)
|
|
|
|
/* (p_s->PRI->region_width * p_s->PRI->region_height) /(64*64)); */
|
|
IF_THREAD(
|
|
nthreads = MIN(num_processors, MAX_THREADS);
|
|
nthreads = MIN(nthreads, 1 +
|
|
(p_s->PRI->region_width * p_s->PRI->region_height)
|
|
/(TILE_WIDTH*TILE_HEIGHT));
|
|
if (nthreads > 1)
|
|
{
|
|
pthread_attr_init (&pthread_attr);
|
|
for (i = 0; i < nthreads; i++)
|
|
{
|
|
pthread_create (&threads[i], &pthread_attr,
|
|
(void *(*)(void *)) do_parallel_regions,
|
|
p_s);
|
|
}
|
|
for (i = 0; i < nthreads; i++)
|
|
{
|
|
pthread_join(threads[i], NULL);
|
|
}
|
|
}
|
|
else
|
|
)
|
|
do_parallel_regions(p_s);
|
|
if (p_s->nthreads != 0)
|
|
fprintf(stderr, "Ack, we lost a thread\n");
|
|
}
|
|
|
|
static PixelProcessor *
|
|
pixel_regions_real_process_parallel(p_func f, void *data,
|
|
ProgressReportFunc report_func,
|
|
void *report_data,
|
|
int num_regions, va_list ap)
|
|
{
|
|
int i;
|
|
PixelProcessor *p_s;
|
|
|
|
|
|
p_s = g_new(PixelProcessor, 200);
|
|
|
|
|
|
for (i = 0; i < num_regions; i++)
|
|
p_s->r[i] = va_arg (ap, PixelRegion *);
|
|
|
|
switch(num_regions)
|
|
{
|
|
case 1:
|
|
p_s->PRI = (PixelRegionIterator *) pixel_regions_register(num_regions,
|
|
p_s->r[0]);
|
|
break;
|
|
case 2:
|
|
p_s->PRI = (PixelRegionIterator *) pixel_regions_register(num_regions,
|
|
p_s->r[0],
|
|
p_s->r[1]);
|
|
break;
|
|
case 3:
|
|
p_s->PRI = (PixelRegionIterator *) pixel_regions_register(num_regions,
|
|
p_s->r[0],
|
|
p_s->r[1],
|
|
p_s->r[2]);
|
|
break;
|
|
case 4:
|
|
p_s->PRI = (PixelRegionIterator *) pixel_regions_register(num_regions,
|
|
p_s->r[0],
|
|
p_s->r[1],
|
|
p_s->r[2],
|
|
p_s->r[3]);
|
|
break;
|
|
default:
|
|
g_message("pixel_regions_real_process_parallel: Bad number of regions %d\n",
|
|
p_s->n_regions);
|
|
}
|
|
if (!p_s->PRI)
|
|
{
|
|
pixel_processor_free(p_s);
|
|
return NULL;
|
|
}
|
|
IF_THREAD(p_s->PRI->dirty_tiles = 0;)
|
|
p_s->f = f;
|
|
p_s->data = data;
|
|
p_s->n_regions = num_regions;
|
|
IF_THREAD(pthread_mutex_init(&(p_s->mutex), NULL);)
|
|
p_s->nthreads = 0;
|
|
|
|
p_s->progress_report_data = report_data;
|
|
p_s->progress_report_func = report_func;
|
|
|
|
|
|
pixel_regions_do_parallel(p_s);
|
|
|
|
if (p_s->PRI)
|
|
return p_s;
|
|
pixel_processor_free (p_s);
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
pixel_regions_process_parallel(p_func f, void *data, int num_regions, ...)
|
|
{
|
|
va_list va;
|
|
va_start (va, num_regions);
|
|
|
|
pixel_regions_real_process_parallel(f, data, NULL, NULL, num_regions, va);
|
|
|
|
va_end (va);
|
|
}
|
|
|
|
PixelProcessor *
|
|
pixel_regions_process_parallel_progress(p_func f, void *data,
|
|
ProgressReportFunc progress_func,
|
|
void *progress_data, int num_regions,
|
|
...)
|
|
{
|
|
PixelProcessor *ret;
|
|
va_list va;
|
|
va_start (va, num_regions);
|
|
|
|
ret = pixel_regions_real_process_parallel(f, data,
|
|
progress_func, progress_data,
|
|
num_regions, va);
|
|
|
|
va_end (va);
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
pixel_processor_stop(PixelProcessor *pp)
|
|
{
|
|
if (!pp)
|
|
return;
|
|
if (pp->PRI)
|
|
{
|
|
pixel_regions_process_stop (pp->PRI);
|
|
pp->PRI = NULL;
|
|
}
|
|
pixel_processor_free(pp);
|
|
}
|
|
|
|
PixelProcessor *
|
|
pixel_processor_cont(PixelProcessor *pp)
|
|
{
|
|
pixel_regions_do_parallel(pp);
|
|
if (pp->PRI)
|
|
return pp;
|
|
pixel_processor_free (pp);
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
pixel_processor_free (PixelProcessor *pp)
|
|
{
|
|
if (pp->PRI)
|
|
pixel_processor_stop(pp);
|
|
else
|
|
g_free(pp);
|
|
}
|
|
|