--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/glib/libglib/src/ghook.c Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,638 @@
+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * GHook: Callback maintenance functions
+ * Copyright (C) 1998 Tim Janik
+ * Portions copyright (c) 2006 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 "galias.h"
+
+
+/* --- functions --- */
+static void
+default_finalize_hook (GHookList *hook_list,
+ GHook *hook)
+{
+ GDestroyNotify destroy = hook->destroy;
+
+ if (destroy)
+ {
+ hook->destroy = NULL;
+ destroy (hook->data);
+ }
+}
+
+EXPORT_C void
+g_hook_list_init (GHookList *hook_list,
+ guint hook_size)
+{
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_size >= sizeof (GHook));
+
+ hook_list->seq_id = 1;
+ hook_list->hook_size = hook_size;
+ hook_list->is_setup = TRUE;
+ hook_list->hooks = NULL;
+ hook_list->dummy3 = NULL;
+ hook_list->finalize_hook = default_finalize_hook;
+ hook_list->dummy[0] = NULL;
+ hook_list->dummy[1] = NULL;
+}
+
+EXPORT_C void
+g_hook_list_clear (GHookList *hook_list)
+{
+ g_return_if_fail (hook_list != NULL);
+
+ if (hook_list->is_setup)
+ {
+ GHook *hook;
+
+ hook_list->is_setup = FALSE;
+
+ hook = hook_list->hooks;
+ if (!hook)
+ {
+ /* destroy hook_list->hook_memchunk */
+ }
+ else
+ do
+ {
+ GHook *tmp;
+
+ g_hook_ref (hook_list, hook);
+ g_hook_destroy_link (hook_list, hook);
+ tmp = hook->next;
+ g_hook_unref (hook_list, hook);
+ hook = tmp;
+ }
+ while (hook);
+ }
+}
+
+EXPORT_C GHook*
+g_hook_alloc (GHookList *hook_list)
+{
+ GHook *hook;
+
+ g_return_val_if_fail (hook_list != NULL, NULL);
+ g_return_val_if_fail (hook_list->is_setup, NULL);
+
+ hook = g_slice_alloc0 (hook_list->hook_size);
+ hook->data = NULL;
+ hook->next = NULL;
+ hook->prev = NULL;
+ hook->flags = G_HOOK_FLAG_ACTIVE;
+ hook->ref_count = 0;
+ hook->hook_id = 0;
+ hook->func = NULL;
+ hook->destroy = NULL;
+
+ return hook;
+}
+
+EXPORT_C void
+g_hook_free (GHookList *hook_list,
+ GHook *hook)
+{
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_list->is_setup);
+ g_return_if_fail (hook != NULL);
+ g_return_if_fail (G_HOOK_IS_UNLINKED (hook));
+ g_return_if_fail (!G_HOOK_IN_CALL (hook));
+
+ hook_list->finalize_hook (hook_list, hook);
+ g_slice_free1 (hook_list->hook_size, hook);
+}
+
+EXPORT_C void
+g_hook_destroy_link (GHookList *hook_list,
+ GHook *hook)
+{
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook != NULL);
+
+ hook->flags &= ~G_HOOK_FLAG_ACTIVE;
+ if (hook->hook_id)
+ {
+ hook->hook_id = 0;
+ g_hook_unref (hook_list, hook); /* counterpart to g_hook_insert_before */
+ }
+}
+
+EXPORT_C gboolean
+g_hook_destroy (GHookList *hook_list,
+ gulong hook_id)
+{
+ GHook *hook;
+
+ g_return_val_if_fail (hook_list != NULL, FALSE);
+ g_return_val_if_fail (hook_id > 0, FALSE);
+
+ hook = g_hook_get (hook_list, hook_id);
+ if (hook)
+ {
+ g_hook_destroy_link (hook_list, hook);
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+EXPORT_C void
+g_hook_unref (GHookList *hook_list,
+ GHook *hook)
+{
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook != NULL);
+ g_return_if_fail (hook->ref_count > 0);
+
+ hook->ref_count--;
+ if (!hook->ref_count)
+ {
+ g_return_if_fail (hook->hook_id == 0);
+ g_return_if_fail (!G_HOOK_IN_CALL (hook));
+
+ if (hook->prev)
+ hook->prev->next = hook->next;
+ else
+ hook_list->hooks = hook->next;
+ if (hook->next)
+ {
+ hook->next->prev = hook->prev;
+ hook->next = NULL;
+ }
+ hook->prev = NULL;
+
+ if (!hook_list->is_setup)
+ {
+ hook_list->is_setup = TRUE;
+ g_hook_free (hook_list, hook);
+ hook_list->is_setup = FALSE;
+
+ if (!hook_list->hooks)
+ {
+ /* destroy hook_list->hook_memchunk */
+ }
+ }
+ else
+ g_hook_free (hook_list, hook);
+ }
+}
+
+EXPORT_C GHook *
+g_hook_ref (GHookList *hook_list,
+ GHook *hook)
+{
+ g_return_val_if_fail (hook_list != NULL, NULL);
+ g_return_val_if_fail (hook != NULL, NULL);
+ g_return_val_if_fail (hook->ref_count > 0, NULL);
+
+ hook->ref_count++;
+
+ return hook;
+}
+
+EXPORT_C void
+g_hook_prepend (GHookList *hook_list,
+ GHook *hook)
+{
+ g_return_if_fail (hook_list != NULL);
+
+ g_hook_insert_before (hook_list, hook_list->hooks, hook);
+}
+
+EXPORT_C void
+g_hook_insert_before (GHookList *hook_list,
+ GHook *sibling,
+ GHook *hook)
+{
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_list->is_setup);
+ g_return_if_fail (hook != NULL);
+ g_return_if_fail (G_HOOK_IS_UNLINKED (hook));
+ g_return_if_fail (hook->ref_count == 0);
+
+ hook->hook_id = hook_list->seq_id++;
+ hook->ref_count = 1; /* counterpart to g_hook_destroy_link */
+
+ if (sibling)
+ {
+ if (sibling->prev)
+ {
+ hook->prev = sibling->prev;
+ hook->prev->next = hook;
+ hook->next = sibling;
+ sibling->prev = hook;
+ }
+ else
+ {
+ hook_list->hooks = hook;
+ hook->next = sibling;
+ sibling->prev = hook;
+ }
+ }
+ else
+ {
+ if (hook_list->hooks)
+ {
+ sibling = hook_list->hooks;
+ while (sibling->next)
+ sibling = sibling->next;
+ hook->prev = sibling;
+ sibling->next = hook;
+ }
+ else
+ hook_list->hooks = hook;
+ }
+}
+
+EXPORT_C void
+g_hook_list_invoke (GHookList *hook_list,
+ gboolean may_recurse)
+{
+ GHook *hook;
+
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_list->is_setup);
+
+ hook = g_hook_first_valid (hook_list, may_recurse);
+ while (hook)
+ {
+ GHookFunc func;
+ gboolean was_in_call;
+
+ func = (GHookFunc) hook->func;
+
+ was_in_call = G_HOOK_IN_CALL (hook);
+ hook->flags |= G_HOOK_FLAG_IN_CALL;
+ func (hook->data);
+ if (!was_in_call)
+ hook->flags &= ~G_HOOK_FLAG_IN_CALL;
+
+ hook = g_hook_next_valid (hook_list, hook, may_recurse);
+ }
+}
+
+EXPORT_C void
+g_hook_list_invoke_check (GHookList *hook_list,
+ gboolean may_recurse)
+{
+ GHook *hook;
+
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_list->is_setup);
+
+ hook = g_hook_first_valid (hook_list, may_recurse);
+ while (hook)
+ {
+ GHookCheckFunc func;
+ gboolean was_in_call;
+ gboolean need_destroy;
+
+ func = (GHookCheckFunc) hook->func;
+
+ was_in_call = G_HOOK_IN_CALL (hook);
+ hook->flags |= G_HOOK_FLAG_IN_CALL;
+ need_destroy = !func (hook->data);
+ if (!was_in_call)
+ hook->flags &= ~G_HOOK_FLAG_IN_CALL;
+ if (need_destroy)
+ g_hook_destroy_link (hook_list, hook);
+
+ hook = g_hook_next_valid (hook_list, hook, may_recurse);
+ }
+}
+
+EXPORT_C void
+g_hook_list_marshal_check (GHookList *hook_list,
+ gboolean may_recurse,
+ GHookCheckMarshaller marshaller,
+ gpointer data)
+{
+ GHook *hook;
+
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_list->is_setup);
+ g_return_if_fail (marshaller != NULL);
+
+ hook = g_hook_first_valid (hook_list, may_recurse);
+ while (hook)
+ {
+ gboolean was_in_call;
+ gboolean need_destroy;
+
+ was_in_call = G_HOOK_IN_CALL (hook);
+ hook->flags |= G_HOOK_FLAG_IN_CALL;
+ need_destroy = !marshaller (hook, data);
+ if (!was_in_call)
+ hook->flags &= ~G_HOOK_FLAG_IN_CALL;
+ if (need_destroy)
+ g_hook_destroy_link (hook_list, hook);
+
+ hook = g_hook_next_valid (hook_list, hook, may_recurse);
+ }
+}
+
+EXPORT_C void
+g_hook_list_marshal (GHookList *hook_list,
+ gboolean may_recurse,
+ GHookMarshaller marshaller,
+ gpointer data)
+{
+ GHook *hook;
+
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_list->is_setup);
+ g_return_if_fail (marshaller != NULL);
+
+ hook = g_hook_first_valid (hook_list, may_recurse);
+ while (hook)
+ {
+ gboolean was_in_call;
+
+ was_in_call = G_HOOK_IN_CALL (hook);
+ hook->flags |= G_HOOK_FLAG_IN_CALL;
+ marshaller (hook, data);
+ if (!was_in_call)
+ hook->flags &= ~G_HOOK_FLAG_IN_CALL;
+
+ hook = g_hook_next_valid (hook_list, hook, may_recurse);
+ }
+}
+
+EXPORT_C GHook*
+g_hook_first_valid (GHookList *hook_list,
+ gboolean may_be_in_call)
+{
+ g_return_val_if_fail (hook_list != NULL, NULL);
+
+ if (hook_list->is_setup)
+ {
+ GHook *hook;
+
+ hook = hook_list->hooks;
+ if (hook)
+ {
+ g_hook_ref (hook_list, hook);
+ if (G_HOOK_IS_VALID (hook) && (may_be_in_call || !G_HOOK_IN_CALL (hook)))
+ return hook;
+ else
+ return g_hook_next_valid (hook_list, hook, may_be_in_call);
+ }
+ }
+
+ return NULL;
+}
+
+EXPORT_C GHook*
+g_hook_next_valid (GHookList *hook_list,
+ GHook *hook,
+ gboolean may_be_in_call)
+{
+ GHook *ohook = hook;
+
+ g_return_val_if_fail (hook_list != NULL, NULL);
+
+ if (!hook)
+ return NULL;
+
+ hook = hook->next;
+ while (hook)
+ {
+ if (G_HOOK_IS_VALID (hook) && (may_be_in_call || !G_HOOK_IN_CALL (hook)))
+ {
+ g_hook_ref (hook_list, hook);
+ g_hook_unref (hook_list, ohook);
+
+ return hook;
+ }
+ hook = hook->next;
+ }
+ g_hook_unref (hook_list, ohook);
+
+ return NULL;
+}
+
+EXPORT_C GHook*
+g_hook_get (GHookList *hook_list,
+ gulong hook_id)
+{
+ GHook *hook;
+
+ g_return_val_if_fail (hook_list != NULL, NULL);
+ g_return_val_if_fail (hook_id > 0, NULL);
+
+ hook = hook_list->hooks;
+ while (hook)
+ {
+ if (hook->hook_id == hook_id)
+ return hook;
+ hook = hook->next;
+ }
+
+ return NULL;
+}
+
+EXPORT_C GHook*
+g_hook_find (GHookList *hook_list,
+ gboolean need_valids,
+ GHookFindFunc func,
+ gpointer data)
+{
+ GHook *hook;
+
+ g_return_val_if_fail (hook_list != NULL, NULL);
+ g_return_val_if_fail (func != NULL, NULL);
+
+ hook = hook_list->hooks;
+ while (hook)
+ {
+ GHook *tmp;
+
+ /* test only non-destroyed hooks */
+ if (!hook->hook_id)
+ {
+ hook = hook->next;
+ continue;
+ }
+
+ g_hook_ref (hook_list, hook);
+
+ if (func (hook, data) && hook->hook_id && (!need_valids || G_HOOK_ACTIVE (hook)))
+ {
+ g_hook_unref (hook_list, hook);
+
+ return hook;
+ }
+
+ tmp = hook->next;
+ g_hook_unref (hook_list, hook);
+ hook = tmp;
+ }
+
+ return NULL;
+}
+
+EXPORT_C GHook*
+g_hook_find_data (GHookList *hook_list,
+ gboolean need_valids,
+ gpointer data)
+{
+ GHook *hook;
+
+ g_return_val_if_fail (hook_list != NULL, NULL);
+
+ hook = hook_list->hooks;
+ while (hook)
+ {
+ /* test only non-destroyed hooks */
+ if (hook->data == data &&
+ hook->hook_id &&
+ (!need_valids || G_HOOK_ACTIVE (hook)))
+ return hook;
+
+ hook = hook->next;
+ }
+
+ return NULL;
+}
+
+EXPORT_C GHook*
+g_hook_find_func (GHookList *hook_list,
+ gboolean need_valids,
+ gpointer func)
+{
+ GHook *hook;
+
+ g_return_val_if_fail (hook_list != NULL, NULL);
+ g_return_val_if_fail (func != NULL, NULL);
+
+ hook = hook_list->hooks;
+ while (hook)
+ {
+ /* test only non-destroyed hooks */
+ if (hook->func == func &&
+ hook->hook_id &&
+ (!need_valids || G_HOOK_ACTIVE (hook)))
+ return hook;
+
+ hook = hook->next;
+ }
+
+ return NULL;
+}
+
+EXPORT_C GHook*
+g_hook_find_func_data (GHookList *hook_list,
+ gboolean need_valids,
+ gpointer func,
+ gpointer data)
+{
+ GHook *hook;
+
+ g_return_val_if_fail (hook_list != NULL, NULL);
+ g_return_val_if_fail (func != NULL, NULL);
+
+ hook = hook_list->hooks;
+ while (hook)
+ {
+ /* test only non-destroyed hooks */
+ if (hook->data == data &&
+ hook->func == func &&
+ hook->hook_id &&
+ (!need_valids || G_HOOK_ACTIVE (hook)))
+ return hook;
+
+ hook = hook->next;
+ }
+
+ return NULL;
+}
+
+EXPORT_C void
+g_hook_insert_sorted (GHookList *hook_list,
+ GHook *hook,
+ GHookCompareFunc func)
+{
+ GHook *sibling;
+
+ g_return_if_fail (hook_list != NULL);
+ g_return_if_fail (hook_list->is_setup);
+ g_return_if_fail (hook != NULL);
+ g_return_if_fail (G_HOOK_IS_UNLINKED (hook));
+ g_return_if_fail (hook->func != NULL);
+ g_return_if_fail (func != NULL);
+
+ /* first non-destroyed hook */
+ sibling = hook_list->hooks;
+ while (sibling && !sibling->hook_id)
+ sibling = sibling->next;
+
+ while (sibling)
+ {
+ GHook *tmp;
+
+ g_hook_ref (hook_list, sibling);
+ if (func (hook, sibling) <= 0 && sibling->hook_id)
+ {
+ g_hook_unref (hook_list, sibling);
+ break;
+ }
+
+ /* next non-destroyed hook */
+ tmp = sibling->next;
+ while (tmp && !tmp->hook_id)
+ tmp = tmp->next;
+
+ g_hook_unref (hook_list, sibling);
+ sibling = tmp;
+ }
+
+ g_hook_insert_before (hook_list, sibling, hook);
+}
+
+EXPORT_C gint
+g_hook_compare_ids (GHook *new_hook,
+ GHook *sibling)
+{
+ if (new_hook->hook_id < sibling->hook_id)
+ return -1;
+ else if (new_hook->hook_id > sibling->hook_id)
+ return 1;
+
+ return 0;
+}
+
+#define __G_HOOK_C__
+#include "galiasdef.c"