/* 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 <glib/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 func; gpointer user_data; gboolean exclusive; }; /* Get a thread pool with the function func, at most max_threads may * run at a time (max_threads == -1 means no limit), 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 func */ GThreadPool* g_thread_pool_new (GFunc func, gpointer user_data, gint max_threads, gboolean exclusive, 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__ */