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2f1f82f60f
Thu Dec 17 03:38:57 1998 Tim Janik <timj@gtk.org>
* Makefile.am: -DG_LOG_DOMAIN="GThread", we don't need an extern
variable for that (noticed by Joel Becker <jlbec@ocala.cs.miami.edu>)
104 lines
2.9 KiB
C
104 lines
2.9 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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* gthread.c: thread related functions
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* Copyright 1998 Sebastian Wilhelmi; University of Karlsruhe
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library 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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* MT safe
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <glib.h>
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static gboolean thread_system_already_initialized = FALSE;
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#include G_THREAD_SOURCE
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void g_mutex_init (void);
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void g_mem_init (void);
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void g_messages_init (void);
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void
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g_thread_init (GThreadFunctions* init)
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{
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gboolean supported;
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#ifndef G_THREADS_ENABLED
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g_error ("GLib thread support is disabled.");
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#endif /* !G_THREADS_ENABLED */
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if (thread_system_already_initialized)
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g_error ("GThread system may only be initialized once.");
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thread_system_already_initialized = TRUE;
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if (init == NULL)
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init = &g_thread_functions_for_glib_use_default;
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else
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g_thread_use_default_impl = FALSE;
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g_thread_functions_for_glib_use = *init;
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/* It is important, that g_threads_got_initialized is not set before the
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* thread initialization functions of the different modules are called
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*/
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supported = (init->mutex_new &&
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init->mutex_lock &&
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init->mutex_trylock &&
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init->mutex_unlock &&
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init->mutex_free &&
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init->cond_new &&
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init->cond_signal &&
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init->cond_broadcast &&
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init->cond_wait &&
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init->cond_timed_wait &&
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init->cond_free &&
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init->private_new &&
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init->private_get &&
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init->private_get);
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/* if somebody is calling g_thread_init (), it means that he wants to
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* have thread support, so check this
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*/
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if (!supported)
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{
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if (g_thread_use_default_impl)
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g_error ("Threads are not supported on this platform.");
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else
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g_error ("The supplied thread function vector is invalid.");
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}
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/* now call the thread initialization functions of the different
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* glib modules. order does matter, g_mutex_init MUST come first.
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*/
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g_mutex_init ();
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g_mem_init ();
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g_messages_init ();
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/* now we can set g_threads_got_initialized and thus enable
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* all the thread functions
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*/
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g_threads_got_initialized = TRUE;
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}
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