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b1d1558747
2000-10-12 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* glib.h, galloca.h, garray.h, gasyncqueue.h, gbacktrace.h,
gcache.h, gcompletion.h, gconvert.h, gdataset.h, gdate.h, ghash.h,
ghook.h, giochannel.h, glist.h , gmacros.h, gmain.h, gmem.h,
gmessages.h, gnode.h, gprimes.h, gquark.h, gqueue.h, grand.h,
grel.h, gscanner.h, gslist.h, gstrfuncs.h, gstring.h, gthread.h,
gthreadpool.h, gtimer.h, gtree.h, gtypes.h, gutils.h: Split glib.h
into many header files mostly according to the resp. *.c-files.
* gmacros.h: Added G_BEGIN_DECLS and G_END_DECLS to mean: 'in case
of C++: extern "C" { ... }' analogous to glibc __BEGIN_DECLS and
__END_DECLS.
* configure.in, gerror.h, gfileutils.h, gshell.h, gspawn.h,
gunicode.h, : Changed guard-macro names to something more
consistent.
* configure.in, *.h: Use G_BEGIN_DECLS and G_END_DECLS.
96 lines
4.2 KiB
C
96 lines
4.2 KiB
C
/* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __G_ASYNCQUEUE_H__
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#define __G_ASYNCQUEUE_H__
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#include <gthread.h>
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G_BEGIN_DECLS
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typedef struct _GAsyncQueue GAsyncQueue;
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/* Asyncronous Queues, can be used to communicate between threads
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*/
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/* Get a new GAsyncQueue with the ref_count 1 */
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GAsyncQueue* g_async_queue_new (void);
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/* Lock and unlock an GAsyncQueue, all functions lock the queue for
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* themselves, but in certain cirumstances you want to hold the lock longer,
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* thus you lock the queue, call the *_unlocked functions and unlock it again
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*/
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void g_async_queue_lock (GAsyncQueue *queue);
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void g_async_queue_unlock (GAsyncQueue *queue);
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/* Ref and unref the GAsyncQueue. g_async_queue_unref_unlocked makes
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* no sense, as after the unreffing the Queue might be gone and can't
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* be unlocked. So you have a function to call, if you don't hold the
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* lock (g_async_queue_unref) and one to call, when you already hold
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* the lock (g_async_queue_unref_and_unlock). After that however, you
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* don't hold the lock anymore and the Queue might in fact be
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* destroyed, if you unrefed to zero */
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void g_async_queue_ref (GAsyncQueue *queue);
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void g_async_queue_ref_unlocked (GAsyncQueue *queue);
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void g_async_queue_unref (GAsyncQueue *queue);
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void g_async_queue_unref_and_unlock (GAsyncQueue *queue);
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/* Push data into the async queue. Must not be NULL */
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void g_async_queue_push (GAsyncQueue *queue,
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gpointer data);
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void g_async_queue_push_unlocked (GAsyncQueue *queue,
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gpointer data);
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/* Pop data from the async queue, when no data is there, the thread is blocked
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* until data arrives */
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gpointer g_async_queue_pop (GAsyncQueue *queue);
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gpointer g_async_queue_pop_unlocked (GAsyncQueue *queue);
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/* Try to pop data, NULL is returned in case of empty queue */
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gpointer g_async_queue_try_pop (GAsyncQueue *queue);
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gpointer g_async_queue_try_pop_unlocked (GAsyncQueue *queue);
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/* Wait for data until at maximum until end_time is reached, NULL is returned
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* in case of empty queue*/
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gpointer g_async_queue_timed_pop (GAsyncQueue *queue,
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GTimeVal *end_time);
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gpointer g_async_queue_timed_pop_unlocked (GAsyncQueue *queue,
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GTimeVal *end_time);
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/* Return the length of the queue, negative values mean, that threads
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* are waiting, positve values mean, that there are entries in the
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* queue. Actually this function returns the length of the queue minus
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* the number of waiting threads, g_async_queue_length == 0 could also
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* mean 'n' entries in the queue and 'n' thread waiting, such can
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* happen due to locking of the queue or due to scheduling. */
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gint g_async_queue_length (GAsyncQueue *queue);
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gint g_async_queue_length_unlocked (GAsyncQueue *queue);
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G_END_DECLS
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#endif /* __G_ASYNCQUEUE_H__ */
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