| /* GLIB - Library of useful routines for C programming |
| * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| * |
| * gthread.c: thread related functions |
| * Copyright 1998 Sebastian Wilhelmi; University of Karlsruhe |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library 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 1997-1999. 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/. |
| */ |
| |
| /* |
| * MT safe |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <glib.h> |
| |
| static gboolean thread_system_already_initialized = FALSE; |
| |
| #include G_THREAD_SOURCE |
| |
| void g_mutex_init (void); |
| void g_mem_init (void); |
| void g_messages_init (void); |
| |
| void |
| g_thread_init (GThreadFunctions* init) |
| { |
| gboolean supported; |
| |
| #ifndef G_THREADS_ENABLED |
| g_error ("GLib thread support is disabled."); |
| #endif /* !G_THREADS_ENABLED */ |
| |
| if (thread_system_already_initialized) |
| g_error ("GThread system may only be initialized once."); |
| |
| thread_system_already_initialized = TRUE; |
| |
| if (init == NULL) |
| init = &g_thread_functions_for_glib_use_default; |
| else |
| g_thread_use_default_impl = FALSE; |
| |
| g_thread_functions_for_glib_use = *init; |
| |
| /* It is important, that g_threads_got_initialized is not set before the |
| * thread initialization functions of the different modules are called |
| */ |
| |
| supported = (init->mutex_new && |
| init->mutex_lock && |
| init->mutex_trylock && |
| init->mutex_unlock && |
| init->mutex_free && |
| init->cond_new && |
| init->cond_signal && |
| init->cond_broadcast && |
| init->cond_wait && |
| init->cond_timed_wait && |
| init->cond_free && |
| init->private_new && |
| init->private_get && |
| init->private_get); |
| |
| /* if somebody is calling g_thread_init (), it means that he wants to |
| * have thread support, so check this |
| */ |
| if (!supported) |
| { |
| if (g_thread_use_default_impl) |
| g_error ("Threads are not supported on this platform."); |
| else |
| g_error ("The supplied thread function vector is invalid."); |
| } |
| |
| /* now call the thread initialization functions of the different |
| * glib modules. order does matter, g_mutex_init MUST come first. |
| */ |
| g_mutex_init (); |
| g_mem_init (); |
| g_messages_init (); |
| |
| /* now we can set g_threads_got_initialized and thus enable |
| * all the thread functions |
| */ |
| g_threads_got_initialized = TRUE; |
| } |