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a5ae4f8f99
1998-12-09 Sebastian Wilhelmi <wilhelmi@ira.uka.de> * Made the thread related code follow GNU coding standard. * Made a comment (HOLDS:) above each function, that expects the given locks to be held. * Changed try_lock to trylock throughout. * glib.c: Eventually removed the #if 0'ed code for old GStaticMutex. * glib.c: Corrected g_trylock macro for G_DEBUG_LOCKS. * gmain.c (g_main_poll_add_unlocked): first take a new poll record form the poll_free_list. * gmem.c, gstrfuncs.c, gutils.c: Made it MT safe. * gthraed/*.c: Added copyright headers. * gthread/gthread-solaris.c: do not use g_log for errors, as g_log uses these module and endless recursions might happen, just use a plain fprintf(stderr,...). * gthread/gthread.c (g_thread_try_init): Call g_mutex_init(). * gthread/testgthread.c: updated test program.
94 lines
2.5 KiB
C
94 lines
2.5 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 const char *g_log_domain_gthread = "GThread";
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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();
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gboolean
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g_thread_try_init(GThreadFunctions* init)
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{
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if (thread_system_already_initialized)
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return FALSE;
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thread_system_already_initialized = TRUE;
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if (init == NULL)
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{
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g_thread_use_default_impl = TRUE;
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init = &g_thread_functions_for_glib_use_default;
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}
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g_thread_functions_for_glib_use = *init;
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g_thread_supported =
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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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if (!g_thread_supported)
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g_error( "Mutex functions missing." );
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/* now call the thread initialization functions of the different
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glib modules. BTW: order does matter, g_mutex_init MUST be first */
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g_mutex_init();
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return TRUE;
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}
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void
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g_thread_init(GThreadFunctions* init)
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{
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/* Make sure, this function is only called once. */
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if (!g_thread_try_init (init))
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g_error( "the glib thread system may only be initialized once." );
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}
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