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- /* GLIB - Library of useful routines for C programming
- * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
- /*
- * Modified by the GLib Team and others 1997-2000. See the AUTHORS
- * file for a list of people on the GLib Team. See the ChangeLog
- * files for a list of changes. These files are distributed with
- * GLib at ftp://ftp.gtk.org/pub/gtk/.
- */
-
- #ifndef __G_ASYNCQUEUE_H__
- #define __G_ASYNCQUEUE_H__
-
- #include <glib/gthread.h>
-
- G_BEGIN_DECLS
-
- typedef struct _GAsyncQueue GAsyncQueue;
-
- /* Asyncronous Queues, can be used to communicate between threads
- */
-
- /* Get a new GAsyncQueue with the ref_count 1 */
- GAsyncQueue* g_async_queue_new (void);
-
- /* Lock and unlock a GAsyncQueue. All functions lock the queue for
- * themselves, but in certain cirumstances you want to hold the lock longer,
- * thus you lock the queue, call the *_unlocked functions and unlock it again.
- */
- void g_async_queue_lock (GAsyncQueue *queue);
- void g_async_queue_unlock (GAsyncQueue *queue);
-
- /* Ref and unref the GAsyncQueue. */
- GAsyncQueue* g_async_queue_ref (GAsyncQueue *queue);
- void g_async_queue_unref (GAsyncQueue *queue);
- #ifndef G_DISABLE_DEPRECATED
- /* You don't have to hold the lock for calling *_ref and *_unref anymore. */
- void g_async_queue_ref_unlocked (GAsyncQueue *queue);
- void g_async_queue_unref_and_unlock (GAsyncQueue *queue);
- #endif /* !G_DISABLE_DEPRECATED */
-
- /* Push data into the async queue. Must not be NULL. */
- void g_async_queue_push (GAsyncQueue *queue,
- gpointer data);
- void g_async_queue_push_unlocked (GAsyncQueue *queue,
- gpointer data);
-
- /* Pop data from the async queue. When no data is there, the thread is blocked
- * until data arrives. */
- gpointer g_async_queue_pop (GAsyncQueue *queue);
- gpointer g_async_queue_pop_unlocked (GAsyncQueue *queue);
-
- /* Try to pop data. NULL is returned in case of empty queue. */
- gpointer g_async_queue_try_pop (GAsyncQueue *queue);
- gpointer g_async_queue_try_pop_unlocked (GAsyncQueue *queue);
-
- /* Wait for data until at maximum until end_time is reached. NULL is returned
- * in case of empty queue. */
- gpointer g_async_queue_timed_pop (GAsyncQueue *queue,
- GTimeVal *end_time);
- gpointer g_async_queue_timed_pop_unlocked (GAsyncQueue *queue,
- GTimeVal *end_time);
-
- /* Return the length of the queue. Negative values mean that threads
- * are waiting, positve values mean that there are entries in the
- * queue. Actually this function returns the length of the queue minus
- * the number of waiting threads, g_async_queue_length == 0 could also
- * mean 'n' entries in the queue and 'n' thread waiting. Such can
- * happen due to locking of the queue or due to scheduling. */
- gint g_async_queue_length (GAsyncQueue *queue);
- gint g_async_queue_length_unlocked (GAsyncQueue *queue);
-
- G_END_DECLS
-
- #endif /* __G_ASYNCQUEUE_H__ */
-
-