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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_THREADPOOL_H__
#define __G_THREADPOOL_H__
#include <gthread.h>
G_BEGIN_DECLS
typedef struct _GThreadPool GThreadPool;
/* Thread Pools
*/
/* The real GThreadPool is bigger, so you may only create a thread
* pool with the constructor function */
struct _GThreadPool
{
GFunc thread_func;
gulong stack_size;
gboolean bound;
GThreadPriority priority;
gboolean exclusive;
gpointer user_data;
};
/* Get a thread pool with the function thread_func, at most max_threads may
* run at a time (max_threads == -1 means no limit), stack_size, bound,
* priority like in g_thread_create, exclusive == TRUE means, that the threads
* shouldn't be shared and that they will be prestarted (otherwise they are
* started, as needed) user_data is the 2nd argument to the thread_func */
GThreadPool* g_thread_pool_new (GFunc thread_func,
gint max_threads,
gulong stack_size,
gboolean bound,
GThreadPriority priority,
gboolean exclusive,
gpointer user_data,
GError **error);
/* Push new data into the thread pool. This task is assigned to a thread later
* (when the maximal number of threads is reached for that pool) or now
* (otherwise). If necessary a new thread will be started. The function
* returns immediatly */
void g_thread_pool_push (GThreadPool *pool,
gpointer data,
GError **error);
/* Set the number of threads, which can run concurrently for that pool, -1
* means no limit. 0 means has the effect, that the pool won't process
* requests until the limit is set higher again */
void g_thread_pool_set_max_threads (GThreadPool *pool,
gint max_threads,
GError **error);
gint g_thread_pool_get_max_threads (GThreadPool *pool);
/* Get the number of threads assigned to that pool. This number doesn't
* necessarily represent the number of working threads in that pool */
guint g_thread_pool_get_num_threads (GThreadPool *pool);
/* Get the number of unprocessed items in the pool */
guint g_thread_pool_unprocessed (GThreadPool *pool);
/* Free the pool, immediate means, that all unprocessed items in the queue
* wont be processed, wait means, that the function doesn't return immediatly,
* but after all threads in the pool are ready processing items. immediate
* does however not mean, that threads are killed. */
void g_thread_pool_free (GThreadPool *pool,
gboolean immediate,
gboolean wait);
/* Set the maximal number of unused threads before threads will be stopped by
* GLib, -1 means no limit */
void g_thread_pool_set_max_unused_threads (gint max_threads);
gint g_thread_pool_get_max_unused_threads (void);
guint g_thread_pool_get_num_unused_threads (void);
/* Stop all currently unused threads, but leave the limit untouched */
void g_thread_pool_stop_unused_threads (void);
G_END_DECLS
#endif /* __G_THREADPOOL_H__ */
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