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/* Copyright (C) 2017 Ernestas Kulik <ernestask@gnome.org>
*
* This file is part of Nautilus.
*
* Nautilus 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.
*
* Nautilus 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 Nautilus. If not, see <https://www.gnu.org/licenses/>.
*/
#include "nautilus-context-scheduler.h"
#include "nautilus-scheduler-private.h"
struct _NautilusContextScheduler
{
NautilusScheduler parent_instance;
GMainContext *context;
guint source_id;
GQueue *queue;
};
G_DEFINE_TYPE (NautilusContextScheduler, nautilus_context_scheduler,
NAUTILUS_TYPE_SCHEDULER)
typedef struct
{
GSource parent_instance;
NautilusContextScheduler *scheduler;
} NautilusSource;
G_LOCK_DEFINE_STATIC (table_mutex);
static GHashTable *scheduler_table = NULL;
static void
queue (NautilusScheduler *scheduler,
NautilusCallback func,
gpointer func_data)
{
NautilusContextScheduler *context_scheduler;
NautilusThreadWork *work;
context_scheduler = NAUTILUS_CONTEXT_SCHEDULER (scheduler);
work = nautilus_thread_work_new (func, func_data);
g_queue_push_tail (context_scheduler->queue, work);
}
static void
nautilus_context_scheduler_class_init (NautilusContextSchedulerClass *klass)
{
NautilusSchedulerClass *scheduler_class;
scheduler_class = NAUTILUS_SCHEDULER_CLASS (klass);
scheduler_class->queue = queue;
}
static gboolean
source_prepare (GSource *source,
gint *timeout)
{
NautilusSource *nautilus_source;
nautilus_source = (NautilusSource *) source;
*timeout = -1;
return !g_queue_is_empty (nautilus_source->scheduler->queue);
}
static gboolean
source_check (GSource *source)
{
NautilusSource *nautilus_source;
nautilus_source = (NautilusSource *) source;
return !g_queue_is_empty (nautilus_source->scheduler->queue);
}
static gboolean
source_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
return callback (user_data);
}
static GSourceFuncs source_funcs =
{
source_prepare,
source_check,
source_dispatch,
NULL
};
static gboolean
source_callback (gpointer data)
{
NautilusContextScheduler *scheduler;
NautilusThreadWork *work;
scheduler = data;
while ((work = g_queue_pop_head (scheduler->queue)) != NULL)
{
nautilus_thread_work_run (work);
}
return G_SOURCE_CONTINUE;
}
static void
nautilus_context_scheduler_init (NautilusContextScheduler *self)
{
g_autoptr (GSource) source = NULL;
source = g_source_new (&source_funcs, sizeof (NautilusSource));
g_source_set_priority (source, G_PRIORITY_DEFAULT_IDLE);
g_source_set_callback (source, source_callback, self, NULL);
self->source_id = g_source_attach (source, self->context);
}
NautilusScheduler *
nautilus_context_scheduler_get_for_context (GMainContext *context)
{
NautilusContextScheduler *scheduler;
g_return_val_if_fail (context != NULL, NULL);
G_LOCK (table_mutex);
if (scheduler_table == NULL)
{
scheduler_table = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, g_object_unref);
}
scheduler = g_hash_table_lookup (scheduler_table, context);
if (scheduler == NULL)
{
scheduler = g_object_new (NAUTILUS_TYPE_CONTEXT_SCHEDULER, NULL);
scheduler->context = context;
g_hash_table_insert (scheduler_table, context, scheduler);
}
G_UNLOCK (table_mutex);
return NAUTILUS_SCHEDULER (scheduler);
}
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