mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-13 03:46:34 +00:00
b6df564251
While the default implementation will spawn a thread per new pushed task, this new implementation instead spawns a maximum number of threads, then queues new tasks on existing threads. The thread that the new task will be queued on is picked in a pretty naive fashion, by simply popping the first thread from a queue and pushing it back to the tail, but this is an implementation detail and can always be sophisticated in the future if the need arises. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/692>
177 lines
5.4 KiB
C
177 lines
5.4 KiB
C
/* GStreamer
|
|
* Copyright (C) <2009> Wim Taymans <wim.taymans@gmail.com>
|
|
*
|
|
* gsttaskpool.h: Pool for creating streaming threads
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_TASK_POOL_H__
|
|
#define __GST_TASK_POOL_H__
|
|
|
|
#include <gst/gstobject.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/* --- standard type macros --- */
|
|
#define GST_TYPE_TASK_POOL (gst_task_pool_get_type ())
|
|
#define GST_TASK_POOL(pool) (G_TYPE_CHECK_INSTANCE_CAST ((pool), GST_TYPE_TASK_POOL, GstTaskPool))
|
|
#define GST_IS_TASK_POOL(pool) (G_TYPE_CHECK_INSTANCE_TYPE ((pool), GST_TYPE_TASK_POOL))
|
|
#define GST_TASK_POOL_CLASS(pclass) (G_TYPE_CHECK_CLASS_CAST ((pclass), GST_TYPE_TASK_POOL, GstTaskPoolClass))
|
|
#define GST_IS_TASK_POOL_CLASS(pclass) (G_TYPE_CHECK_CLASS_TYPE ((pclass), GST_TYPE_TASK_POOL))
|
|
#define GST_TASK_POOL_GET_CLASS(pool) (G_TYPE_INSTANCE_GET_CLASS ((pool), GST_TYPE_TASK_POOL, GstTaskPoolClass))
|
|
#define GST_TASK_POOL_CAST(pool) ((GstTaskPool*)(pool))
|
|
|
|
typedef struct _GstTaskPool GstTaskPool;
|
|
typedef struct _GstTaskPoolClass GstTaskPoolClass;
|
|
|
|
/**
|
|
* GstTaskPoolFunction:
|
|
* @user_data: user data for the task function
|
|
*
|
|
* Task function, see gst_task_pool_push().
|
|
*/
|
|
typedef void (*GstTaskPoolFunction) (void *user_data);
|
|
|
|
/**
|
|
* GstTaskPool:
|
|
*
|
|
* The #GstTaskPool object.
|
|
*/
|
|
struct _GstTaskPool {
|
|
GstObject object;
|
|
|
|
/*< private >*/
|
|
GThreadPool *pool;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstTaskPoolClass:
|
|
* @parent_class: the parent class structure
|
|
* @prepare: prepare the threadpool
|
|
* @cleanup: make sure all threads are stopped
|
|
* @push: start a new thread
|
|
* @join: join a thread
|
|
*
|
|
* The #GstTaskPoolClass object.
|
|
*/
|
|
struct _GstTaskPoolClass {
|
|
GstObjectClass parent_class;
|
|
|
|
/*< public >*/
|
|
void (*prepare) (GstTaskPool *pool, GError **error);
|
|
void (*cleanup) (GstTaskPool *pool);
|
|
|
|
gpointer (*push) (GstTaskPool *pool, GstTaskPoolFunction func,
|
|
gpointer user_data, GError **error);
|
|
void (*join) (GstTaskPool *pool, gpointer id);
|
|
|
|
/**
|
|
* GstTaskPoolClass::dispose_handle:
|
|
* @pool: a #GstTaskPool
|
|
* @id: (transfer full): the handle to dispose of
|
|
*
|
|
* free / unref the handle returned in GstTaskPoolClass::push.
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
void (*dispose_handle) (GstTaskPool *pool, gpointer id);
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING - 1];
|
|
};
|
|
|
|
GST_API
|
|
GType gst_task_pool_get_type (void);
|
|
|
|
GST_API
|
|
GstTaskPool * gst_task_pool_new (void);
|
|
|
|
GST_API
|
|
void gst_task_pool_prepare (GstTaskPool *pool, GError **error);
|
|
|
|
GST_API
|
|
gpointer gst_task_pool_push (GstTaskPool *pool, GstTaskPoolFunction func,
|
|
gpointer user_data, GError **error);
|
|
GST_API
|
|
void gst_task_pool_join (GstTaskPool *pool, gpointer id);
|
|
|
|
GST_API
|
|
void gst_task_pool_dispose_handle (GstTaskPool *pool, gpointer id);
|
|
|
|
GST_API
|
|
void gst_task_pool_cleanup (GstTaskPool *pool);
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstTaskPool, gst_object_unref)
|
|
|
|
typedef struct _GstSharedTaskPool GstSharedTaskPool;
|
|
typedef struct _GstSharedTaskPoolClass GstSharedTaskPoolClass;
|
|
typedef struct _GstSharedTaskPoolPrivate GstSharedTaskPoolPrivate;
|
|
|
|
#define GST_TYPE_SHARED_TASK_POOL (gst_shared_task_pool_get_type ())
|
|
#define GST_SHARED_TASK_POOL(pool) (G_TYPE_CHECK_INSTANCE_CAST ((pool), GST_TYPE_TASK_POOL, GstSharedTaskPool))
|
|
#define GST_IS_SHARED_TASK_POOL(pool) (G_TYPE_CHECK_INSTANCE_TYPE ((pool), GST_TYPE_SHARED_TASK_POOL))
|
|
#define GST_SHARED_TASK_POOL_CLASS(pclass) (G_TYPE_CHECK_CLASS_CAST ((pclass), GST_TYPE_SHARED_TASK_POOL, GstSharedTaskPoolClass))
|
|
#define GST_IS_SHARED_TASK_POOL_CLASS(pclass) (G_TYPE_CHECK_CLASS_TYPE ((pclass), GST_TYPE_SHARED_TASK_POOL))
|
|
#define GST_SHARED_TASK_POOL_GET_CLASS(pool) (G_TYPE_INSTANCE_GET_CLASS ((pool), GST_TYPE_SHARED_TASK_POOL, GstSharedTaskPoolClass))
|
|
|
|
/**
|
|
* GstSharedTaskPool:
|
|
*
|
|
* The #GstSharedTaskPool object.
|
|
*
|
|
* since: 1.20
|
|
*/
|
|
struct _GstSharedTaskPool {
|
|
GstTaskPool parent;
|
|
|
|
/*< private >*/
|
|
GstSharedTaskPoolPrivate *priv;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstSharedTaskPoolClass:
|
|
*
|
|
* The #GstSharedTaskPoolClass object.
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
struct _GstSharedTaskPoolClass {
|
|
GstTaskPoolClass parent_class;
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GST_API
|
|
GType gst_shared_task_pool_get_type (void);
|
|
|
|
GST_API
|
|
void gst_shared_task_pool_set_max_threads (GstSharedTaskPool *pool, guint max_threads);
|
|
|
|
GST_API
|
|
guint gst_shared_task_pool_get_max_threads (GstSharedTaskPool *pool);
|
|
|
|
GST_API
|
|
GstTaskPool * gst_shared_task_pool_new (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_TASK_POOL_H__ */
|