--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/glib/gthread/gthread-impl.c Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,397 @@
+/* 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
+ * Portions copyright (c) 2006-2009 Nokia Corporation. All rights reserved.
+ *
+ * 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/.
+ */
+
+/*
+ * MT safe
+ */
+
+#include "config.h"
+
+#include "glib.h"
+#include "gthreadprivate.h"
+
+#ifdef __SYMBIAN32__
+#include <string.h>
+#endif//__SYMBIAN32__
+
+#ifdef __SYMBIAN32__
+#include <glib_global.h>
+#include "gthread_wsd.h"
+#endif /* __SYMBIAN32__ */
+
+#ifdef G_THREADS_ENABLED
+#if EMULATOR
+PLS(zero_thread,gthread_impl,GSystemThread)
+PLS(thread_system_already_initialized,gthread_impl,gboolean)
+PLS_ARRAY(g_thread_priority_map,gthread_impl,gint)
+
+#define zero_thread (*FUNCTION_NAME(zero_thread,gthread_impl)())
+#define thread_system_already_initialized (*FUNCTION_NAME(thread_system_already_initialized,gthread_impl)())
+#define g_thread_priority_map (FUNCTION_NAME(g_thread_priority_map,gthread_impl)())
+#else
+static GSystemThread zero_thread; /* This is initialized to all zero */
+static gboolean thread_system_already_initialized = FALSE;
+static gint g_thread_priority_map [G_THREAD_PRIORITY_URGENT + 1];
+
+#endif /* EMULATOR */
+
+#include G_THREAD_SOURCE
+
+#ifndef PRIORITY_LOW_VALUE
+# define PRIORITY_LOW_VALUE 0
+#endif
+
+#ifndef PRIORITY_URGENT_VALUE
+# define PRIORITY_URGENT_VALUE 0
+#endif
+
+#ifndef PRIORITY_NORMAL_VALUE
+# define PRIORITY_NORMAL_VALUE \
+ ((PRIORITY_LOW_VALUE * 6 + PRIORITY_URGENT_VALUE * 4) / 10)
+#endif /* PRIORITY_NORMAL_VALUE */
+
+#ifndef PRIORITY_HIGH_VALUE
+# define PRIORITY_HIGH_VALUE \
+ ((PRIORITY_NORMAL_VALUE + PRIORITY_URGENT_VALUE * 2) / 3)
+#endif /* PRIORITY_HIGH_VALUE */
+
+void g_mutex_init (void);
+void g_mem_init (void);
+void g_messages_init (void);
+void g_convert_init (void);
+void g_rand_init (void);
+void g_main_thread_init (void);
+
+typedef struct _GMutexDebugInfo GMutexDebugInfo;
+struct _GMutexDebugInfo
+{
+ gchar *location;
+ GSystemThread owner;
+};
+
+#define G_MUTEX_DEBUG_INFO(mutex) \
+ (((GMutexDebugInfo*)(((char*)mutex)+G_MUTEX_SIZE)))
+
+static GMutex *
+g_mutex_new_errorcheck_impl (void)
+{
+ GMutex *retval = g_thread_functions_for_glib_use_default.mutex_new ();
+ GMutexDebugInfo *info;
+ retval = g_realloc (retval, G_MUTEX_SIZE + sizeof (GMutexDebugInfo));
+
+ info = G_MUTEX_DEBUG_INFO (retval);
+ g_system_thread_assign (info->owner, zero_thread);
+ info->location = "invalid";
+
+ return retval;
+}
+
+static void
+g_mutex_lock_errorcheck_impl (GMutex *mutex,
+ const gulong magic,
+ gchar * const location)
+{
+ GMutexDebugInfo *info = G_MUTEX_DEBUG_INFO (mutex);
+ gchar *loc = (magic == G_MUTEX_DEBUG_MAGIC) ? location : "unknown";
+
+ GSystemThread self;
+ g_thread_functions_for_glib_use.thread_self (&self);
+
+ if (g_system_thread_equal (info->owner, self))
+ g_error ("Trying to recursivly lock a mutex at '%s', "
+ "previously locked at '%s'",
+ loc, info->location);
+
+ g_thread_functions_for_glib_use_default.mutex_lock (mutex);
+
+ g_system_thread_assign (info->owner, self);
+ info->location = loc;
+}
+
+static gboolean
+g_mutex_trylock_errorcheck_impl (GMutex *mutex,
+ const gulong magic,
+ gchar * const location)
+{
+ GMutexDebugInfo *info = G_MUTEX_DEBUG_INFO (mutex);
+ gchar *loc = (magic == G_MUTEX_DEBUG_MAGIC) ? location : "unknown";
+
+ GSystemThread self;
+ g_thread_functions_for_glib_use.thread_self (&self);
+
+ if (g_system_thread_equal (info->owner, self))
+ g_error ("Trying to recursivly lock a mutex at '%s', "
+ "previously locked at '%s'",
+ loc, info->location);
+
+ if (!g_thread_functions_for_glib_use_default.mutex_trylock (mutex))
+ return FALSE;
+
+ g_system_thread_assign (info->owner, self);
+ info->location = loc;
+
+ return TRUE;
+}
+
+static void
+g_mutex_unlock_errorcheck_impl (GMutex *mutex,
+ const gulong magic,
+ gchar * const location)
+{
+ GMutexDebugInfo *info = G_MUTEX_DEBUG_INFO (mutex);
+ gchar *loc = (magic == G_MUTEX_DEBUG_MAGIC) ? location : "unknown";
+
+ GSystemThread self;
+ g_thread_functions_for_glib_use.thread_self (&self);
+
+ if (g_system_thread_equal (info->owner, zero_thread))
+ g_error ("Trying to unlock an unlocked mutex at '%s'", loc);
+
+ if (!g_system_thread_equal (info->owner, self))
+ g_warning ("Trying to unlock a mutex at '%s', "
+ "previously locked by a different thread at '%s'",
+ loc, info->location);
+
+ g_system_thread_assign (info->owner, zero_thread);
+ info->location = NULL;
+
+ g_thread_functions_for_glib_use_default.mutex_unlock (mutex);
+}
+
+static void
+g_mutex_free_errorcheck_impl (GMutex *mutex,
+ const gulong magic,
+ gchar * const location)
+{
+ GMutexDebugInfo *info = G_MUTEX_DEBUG_INFO (mutex);
+ gchar *loc = (magic == G_MUTEX_DEBUG_MAGIC) ? location : "unknown";
+
+ if (info && !g_system_thread_equal (info->owner, zero_thread))
+ g_error ("Trying to free a locked mutex at '%s', "
+ "which was previously locked at '%s'",
+ loc, info->location);
+
+ g_thread_functions_for_glib_use_default.mutex_free (mutex);
+}
+
+static void
+g_cond_wait_errorcheck_impl (GCond *cond,
+ GMutex *mutex,
+ const gulong magic,
+ gchar * const location)
+{
+ GMutexDebugInfo *info = G_MUTEX_DEBUG_INFO (mutex);
+ gchar *loc = (magic == G_MUTEX_DEBUG_MAGIC) ? location : "unknown";
+
+ GSystemThread self;
+ g_thread_functions_for_glib_use.thread_self (&self);
+
+ if (g_system_thread_equal (info->owner, zero_thread))
+ g_error ("Trying to use an unlocked mutex in g_cond_wait() at '%s'", loc);
+
+ if (!g_system_thread_equal (info->owner, self))
+ g_error ("Trying to use a mutex locked by another thread in "
+ "g_cond_wait() at '%s'", loc);
+
+ g_system_thread_assign (info->owner, zero_thread);
+ loc = info->location;
+
+ g_thread_functions_for_glib_use_default.cond_wait (cond, mutex);
+
+ g_system_thread_assign (info->owner, self);
+ info->location = loc;
+}
+
+
+static gboolean
+g_cond_timed_wait_errorcheck_impl (GCond *cond,
+ GMutex *mutex,
+ GTimeVal *end_time,
+ const gulong magic,
+ gchar * const location)
+{
+ GMutexDebugInfo *info = G_MUTEX_DEBUG_INFO (mutex);
+ gchar *loc = (magic == G_MUTEX_DEBUG_MAGIC) ? location : "unknown";
+ gboolean retval;
+
+ GSystemThread self;
+ g_thread_functions_for_glib_use.thread_self (&self);
+
+ if (g_system_thread_equal (info->owner, zero_thread))
+ g_error ("Trying to use an unlocked mutex in g_cond_timed_wait() at '%s'",
+ loc);
+
+ if (!g_system_thread_equal (info->owner, self))
+ g_error ("Trying to use a mutex locked by another thread in "
+ "g_cond_timed_wait() at '%s'", loc);
+
+ g_system_thread_assign (info->owner, zero_thread);
+ loc = info->location;
+
+ retval = g_thread_functions_for_glib_use_default.cond_timed_wait (cond,
+ mutex,
+ end_time);
+
+ g_system_thread_assign (info->owner, self);
+ info->location = loc;
+
+ return retval;
+}
+
+
+/* unshadow function declaration. See gthread.h */
+#undef g_thread_init
+
+EXPORT_C
+void
+g_thread_init_with_errorcheck_mutexes (GThreadFunctions* init)
+{
+ GThreadFunctions errorcheck_functions;
+ if (init)
+ g_error ("Errorcheck mutexes can only be used for native "
+ "thread implementations. Sorry." );
+
+#ifdef HAVE_G_THREAD_IMPL_INIT
+ /* This isn't called in g_thread_init, as it doesn't think to get
+ * the default implementation, so we have to call it on our own.
+ *
+ * We must call this before copying
+ * g_thread_functions_for_glib_use_default as the
+ * implementation-specific init function might modify the contents
+ * of g_thread_functions_for_glib_use_default based on operating
+ * system version, C library version, or whatever. */
+ g_thread_impl_init();
+#endif /* HAVE_G_THREAD_IMPL_INIT */
+
+ errorcheck_functions = g_thread_functions_for_glib_use_default;
+ errorcheck_functions.mutex_new = g_mutex_new_errorcheck_impl;
+ errorcheck_functions.mutex_lock =
+ (void (*)(GMutex *)) g_mutex_lock_errorcheck_impl;
+ errorcheck_functions.mutex_trylock =
+ (gboolean (*)(GMutex *)) g_mutex_trylock_errorcheck_impl;
+ errorcheck_functions.mutex_unlock =
+ (void (*)(GMutex *)) g_mutex_unlock_errorcheck_impl;
+ errorcheck_functions.mutex_free =
+ (void (*)(GMutex *)) g_mutex_free_errorcheck_impl;
+ errorcheck_functions.cond_wait =
+ (void (*)(GCond *, GMutex *)) g_cond_wait_errorcheck_impl;
+ errorcheck_functions.cond_timed_wait =
+ (gboolean (*)(GCond *, GMutex *, GTimeVal *))
+ g_cond_timed_wait_errorcheck_impl;
+
+ g_thread_init (&errorcheck_functions);
+}
+
+EXPORT_C
+void
+g_thread_init (GThreadFunctions* init)
+{
+ gboolean supported;
+
+ if (thread_system_already_initialized)
+ g_error ("GThread system may only be initialized once.");
+
+ thread_system_already_initialized = TRUE;
+
+ if (init == NULL)
+ {
+#ifdef HAVE_G_THREAD_IMPL_INIT
+ /* now do any initialization stuff required by the
+ * implementation, but only if called with a NULL argument, of
+ * course. Otherwise it's up to the user to do so. */
+ g_thread_impl_init();
+#endif /* HAVE_G_THREAD_IMPL_INIT */
+#ifdef __SYMBIAN32__
+ memcpy(&g_thread_functions_for_glib_use_default, &g_thread_functions_for_glib_use_default_temp, sizeof(GThreadFunctions));
+#endif//__SYMBIAN32__
+ init = &g_thread_functions_for_glib_use_default;
+ }
+ else
+ g_thread_use_default_impl = FALSE;
+
+ g_thread_functions_for_glib_use = *init;
+ if (g_thread_gettime_impl)
+ g_thread_gettime = g_thread_gettime_impl;
+
+ 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_set &&
+ init->thread_create &&
+ init->thread_yield &&
+ init->thread_join &&
+ init->thread_exit &&
+ init->thread_set_priority &&
+ init->thread_self);
+
+ /* 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.");
+ }
+
+ g_thread_priority_map [G_THREAD_PRIORITY_LOW] = PRIORITY_LOW_VALUE;
+ g_thread_priority_map [G_THREAD_PRIORITY_NORMAL] = PRIORITY_NORMAL_VALUE;
+ g_thread_priority_map [G_THREAD_PRIORITY_HIGH] = PRIORITY_HIGH_VALUE;
+ g_thread_priority_map [G_THREAD_PRIORITY_URGENT] = PRIORITY_URGENT_VALUE;
+
+ g_thread_init_glib ();
+}
+
+#else /* !G_THREADS_ENABLED */
+
+void
+g_thread_init (GThreadFunctions* init)
+{
+ g_error ("GLib thread support is disabled.");
+}
+
+void
+g_thread_init_with_errorcheck_mutexes (GThreadFunctions* init)
+{
+ g_error ("GLib thread support is disabled.");
+}
+
+#endif /* !G_THREADS_ENABLED */