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/* Eye Of Mate - Jobs Queue
*
* Copyright (C) 2006 The Free Software Foundation
*
* Author: Lucas Rocha <lucasr@gnome.org>
*
* Based on evince code (shell/ev-job-queue.c) by:
* - Martin Kretzschmar <martink@gnome.org>
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "eom-jobs.h"
#include "eom-job-queue.h"
static GCond *render_cond = NULL;
static GMutex *eom_queue_mutex = NULL;
static GQueue *thumbnail_queue = NULL;
static GQueue *load_queue = NULL;
static GQueue *model_queue = NULL;
static GQueue *transform_queue = NULL;
static GQueue *save_queue = NULL;
static GQueue *copy_queue = NULL;
static gboolean
remove_job_from_queue (GQueue *queue, EomJob *job)
{
GList *list;
list = g_queue_find (queue, job);
if (list) {
g_object_unref (G_OBJECT (job));
g_queue_delete_link (queue, list);
return TRUE;
}
return FALSE;
}
static void
add_job_to_queue_locked (GQueue *queue, EomJob *job)
{
g_object_ref (job);
g_queue_push_tail (queue, job);
g_cond_broadcast (render_cond);
}
static gboolean
notify_finished (GObject *job)
{
eom_job_finished (EOM_JOB (job));
return FALSE;
}
static void
handle_job (EomJob *job)
{
g_object_ref (G_OBJECT (job));
// Do the EOM_JOB cast for safety
eom_job_run (EOM_JOB (job));
g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
(GSourceFunc) notify_finished,
job,
g_object_unref);
}
static gboolean
no_jobs_available_unlocked (void)
{
return g_queue_is_empty (load_queue) &&
g_queue_is_empty (transform_queue) &&
g_queue_is_empty (thumbnail_queue) &&
g_queue_is_empty (model_queue) &&
g_queue_is_empty (save_queue) &&
g_queue_is_empty (copy_queue);
}
static EomJob *
search_for_jobs_unlocked (void)
{
EomJob *job;
job = (EomJob *) g_queue_pop_head (load_queue);
if (job)
return job;
job = (EomJob *) g_queue_pop_head (transform_queue);
if (job)
return job;
job = (EomJob *) g_queue_pop_head (thumbnail_queue);
if (job)
return job;
job = (EomJob *) g_queue_pop_head (model_queue);
if (job)
return job;
job = (EomJob *) g_queue_pop_head (save_queue);
if (job)
return job;
job = (EomJob *) g_queue_pop_head (copy_queue);
if (job)
return job;
return NULL;
}
static gpointer
eom_render_thread (gpointer data)
{
while (TRUE) {
EomJob *job;
g_mutex_lock (eom_queue_mutex);
if (no_jobs_available_unlocked ()) {
g_cond_wait (render_cond, eom_queue_mutex);
}
job = search_for_jobs_unlocked ();
g_mutex_unlock (eom_queue_mutex);
/* Now that we have our job, we handle it */
if (job) {
handle_job (job);
g_object_unref (G_OBJECT (job));
}
}
return NULL;
}
void
eom_job_queue_init (void)
{
render_cond = g_cond_new ();
eom_queue_mutex = g_mutex_new ();
thumbnail_queue = g_queue_new ();
load_queue = g_queue_new ();
model_queue = g_queue_new ();
transform_queue = g_queue_new ();
save_queue = g_queue_new ();
copy_queue = g_queue_new ();
g_thread_create (eom_render_thread, NULL, FALSE, NULL);
}
static GQueue *
find_queue (EomJob *job)
{
if (EOM_IS_JOB_THUMBNAIL (job)) {
return thumbnail_queue;
} else if (EOM_IS_JOB_LOAD (job)) {
return load_queue;
} else if (EOM_IS_JOB_MODEL (job)) {
return model_queue;
} else if (EOM_IS_JOB_TRANSFORM (job)) {
return transform_queue;
} else if (EOM_IS_JOB_SAVE (job)) {
return save_queue;
} else if (EOM_IS_JOB_COPY (job)) {
return copy_queue;
}
g_assert_not_reached ();
return NULL;
}
void
eom_job_queue_add_job (EomJob *job)
{
GQueue *queue;
g_return_if_fail (EOM_IS_JOB (job));
queue = find_queue (job);
g_mutex_lock (eom_queue_mutex);
add_job_to_queue_locked (queue, job);
g_mutex_unlock (eom_queue_mutex);
}
gboolean
eom_job_queue_remove_job (EomJob *job)
{
gboolean retval = FALSE;
g_return_val_if_fail (EOM_IS_JOB (job), FALSE);
g_mutex_lock (eom_queue_mutex);
if (EOM_IS_JOB_THUMBNAIL (job)) {
retval = remove_job_from_queue (thumbnail_queue, job);
} else if (EOM_IS_JOB_LOAD (job)) {
retval = remove_job_from_queue (load_queue, job);
} else if (EOM_IS_JOB_MODEL (job)) {
retval = remove_job_from_queue (model_queue, job);
} else if (EOM_IS_JOB_TRANSFORM (job)) {
retval = remove_job_from_queue (transform_queue, job);
} else if (EOM_IS_JOB_SAVE (job)) {
retval = remove_job_from_queue (save_queue, job);
} else if (EOM_IS_JOB_COPY (job)) {
retval = remove_job_from_queue (copy_queue, job);
} else {
g_assert_not_reached ();
}
g_mutex_unlock (eom_queue_mutex);
return retval;
}
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