gstreamer/gst/rtsp-server/rtsp-thread-pool.h
Ognyan Tonchev 258f63b8ac thread-pool: Add cleanup to wait for the threadpool to finish
Also fix race condition if two threads are asking for the first
thread from the thread pool at once. This would case two internal
GThreadPools to be created.

https://bugzilla.gnome.org/show_bug.cgi?id=707753
2013-09-09 14:36:12 +02:00

175 lines
6 KiB
C

/* GStreamer
* Copyright (C) 2010 Wim Taymans <wim.taymans at gmail.com>
*
* 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.
*/
#include <gst/gst.h>
#ifndef __GST_RTSP_THREAD_POOL_H__
#define __GST_RTSP_THREAD_POOL_H__
typedef struct _GstRTSPThread GstRTSPThread;
typedef struct _GstRTSPThreadPool GstRTSPThreadPool;
typedef struct _GstRTSPThreadPoolClass GstRTSPThreadPoolClass;
typedef struct _GstRTSPThreadPoolPrivate GstRTSPThreadPoolPrivate;
#include "rtsp-client.h"
G_BEGIN_DECLS
#define GST_TYPE_RTSP_THREAD_POOL (gst_rtsp_thread_pool_get_type ())
#define GST_IS_RTSP_THREAD_POOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_RTSP_THREAD_POOL))
#define GST_IS_RTSP_THREAD_POOL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_RTSP_THREAD_POOL))
#define GST_RTSP_THREAD_POOL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_RTSP_THREAD_POOL, GstRTSPThreadPoolClass))
#define GST_RTSP_THREAD_POOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_RTSP_THREAD_POOL, GstRTSPThreadPool))
#define GST_RTSP_THREAD_POOL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_RTSP_THREAD_POOL, GstRTSPThreadPoolClass))
#define GST_RTSP_THREAD_POOL_CAST(obj) ((GstRTSPThreadPool*)(obj))
#define GST_RTSP_THREAD_POOL_CLASS_CAST(klass) ((GstRTSPThreadPoolClass*)(klass))
GType gst_rtsp_thread_get_type (void);
#define GST_TYPE_RTSP_THREAD (gst_rtsp_thread_get_type ())
#define GST_IS_RTSP_THREAD(obj) (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_RTSP_THREAD))
#define GST_RTSP_THREAD_CAST(obj) ((GstRTSPThread*)(obj))
#define GST_RTSP_THREAD(obj) (GST_RTSP_THREAD_CAST(obj))
/**
* GstRTSPThreadType:
* @GST_RTSP_THREAD_TYPE_CLIENT: a thread to handle the client communication
* @GST_RTSP_THREAD_TYPE_MEDIA: a thread to handle media
*
* Different thread types
*/
typedef enum
{
GST_RTSP_THREAD_TYPE_CLIENT,
GST_RTSP_THREAD_TYPE_MEDIA
} GstRTSPThreadType;
/**
* GstRTSPThread:
* @mini_object: parent #GstMiniObject
* @type: the thread type
* @context: a #GMainContext
* @loop: a #GMainLoop
*
* Structure holding info about a mainloop running in a thread
*/
struct _GstRTSPThread {
GstMiniObject mini_object;
GstRTSPThreadType type;
GMainContext *context;
GMainLoop *loop;
};
GstRTSPThread * gst_rtsp_thread_new (GstRTSPThreadType type);
gboolean gst_rtsp_thread_reuse (GstRTSPThread * thread);
void gst_rtsp_thread_stop (GstRTSPThread * thread);
/**
* gst_rtsp_thread_ref:
* @thread: The thread to refcount
*
* Increase the refcount of this thread.
*
* Returns: (transfer full): @thread (for convenience when doing assignments)
*/
#ifdef _FOOL_GTK_DOC_
G_INLINE_FUNC GstRTSPThread * gst_rtsp_thread_ref (GstRTSPThread * thread);
#endif
static inline GstRTSPThread *
gst_rtsp_thread_ref (GstRTSPThread * thread)
{
return (GstRTSPThread *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (thread));
}
/**
* gst_rtsp_thread_unref:
* @thread: (transfer full): the thread to refcount
*
* Decrease the refcount of an thread, freeing it if the refcount reaches 0.
*/
#ifdef _FOOL_GTK_DOC_
G_INLINE_FUNC void gst_rtsp_thread_unref (GstRTSPPermissions * thread);
#endif
static inline void
gst_rtsp_thread_unref (GstRTSPThread * thread)
{
gst_mini_object_unref (GST_MINI_OBJECT_CAST (thread));
}
/**
* GstRTSPThreadPool:
*
* The thread pool structure.
*/
struct _GstRTSPThreadPool {
GObject parent;
/*< private >*/
GstRTSPThreadPoolPrivate *priv;
};
/**
* GstRTSPThreadPoolClass:
* @pool: a #GThreadPool used internally
* @get_thread: this function should make or reuse an existing thread that runs
* a mainloop.
* @configure_thread: configure a thread object. this vmethod is called when
* a new thread has been created and should be configured.
* @thread_enter: called from the thread when it is entered
* @thread_leave: called from the thread when it is left
*
* Class for managing threads.
*/
struct _GstRTSPThreadPoolClass {
GObjectClass parent_class;
GThreadPool *pool;
GstRTSPThread * (*get_thread) (GstRTSPThreadPool *pool,
GstRTSPThreadType type,
GstRTSPContext *ctx);
void (*configure_thread) (GstRTSPThreadPool *pool,
GstRTSPThread * thread,
GstRTSPContext *ctx);
void (*thread_enter) (GstRTSPThreadPool *pool,
GstRTSPThread *thread);
void (*thread_leave) (GstRTSPThreadPool *pool,
GstRTSPThread *thread);
};
GType gst_rtsp_thread_pool_get_type (void);
GstRTSPThreadPool * gst_rtsp_thread_pool_new (void);
void gst_rtsp_thread_pool_set_max_threads (GstRTSPThreadPool * pool, gint max_threads);
gint gst_rtsp_thread_pool_get_max_threads (GstRTSPThreadPool * pool);
GstRTSPThread * gst_rtsp_thread_pool_get_thread (GstRTSPThreadPool *pool,
GstRTSPThreadType type,
GstRTSPContext *ctx);
void gst_rtsp_thread_pool_cleanup (void);
G_END_DECLS
#endif /* __GST_RTSP_THREAD_POOL_H__ */