mirror of
https://gitlab.gnome.org/GNOME/glib.git
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5f17e39e2a
Wed Mar 17 01:46:28 1999 Tim Janik <timj@gtk.org> * merges from glib-1-2: Sun Mar 14 17:50:35 1999 Tim Janik <timj@gtk.org> * gmem.c (g_mem_chunk_*): changed a bunch of g_assert() statements to g_return_if_fail(). (g_mem_profile): (g_mem_chunk_print): (g_mem_chunk_info): removed some extraneous "\n"s at the end of the log messages. * gtimer.c (g_timer_*): changed a bunch of g_assert() statements to g_return_if_fail(). * grel.c (g_*): changed a bunch of g_assert() statements to g_return_if_fail() and added some extra ones to check relation != NULL. Tue Mar 9 23:25:50 1999 Tim Janik <timj@gtk.org> * configure.in: check for working realloc (NULL,). * gmem.c (g_realloc): use malloc() for initial allocation on systems where realloc(NULL,) will not work (this is the case on SunOS, reported by Tom Geiger). Mon Mar 8 07:42:08 1999 Tim Janik <timj@gtk.org> * ghook.c (g_hook_unref): when !hook_list->is_setup, wrap the flag around the call to g_hook_free() to avoid spurious warnings (happens during destruction phase). 1999-03-02 Sebastian Wilhelmi <wilhelmi@ira.uka.de> * gmem.c: Fixed a stupid cut'n'paste error of mine. Thanks to Friedrich Dominicus <Friedrich.Dominicus@inka.de>
634 lines
13 KiB
C
634 lines
13 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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* GHook: Callback maintenance functions
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* Copyright (C) 1998 Tim Janik
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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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* Modified by the GLib Team and others 1997-1999. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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*/
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/*
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* MT safe
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*/
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#include "glib.h"
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/* --- defines --- */
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#define G_HOOKS_PREALLOC (16)
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/* --- functions --- */
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void
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g_hook_list_init (GHookList *hook_list,
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guint hook_size)
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{
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_size >= sizeof (GHook));
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hook_list->seq_id = 1;
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hook_list->hook_size = hook_size;
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hook_list->is_setup = TRUE;
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hook_list->hooks = NULL;
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hook_list->hook_memchunk = g_mem_chunk_new ("GHook Memchunk",
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hook_size,
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hook_size * G_HOOKS_PREALLOC,
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G_ALLOC_AND_FREE);
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hook_list->hook_free = NULL;
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hook_list->hook_destroy = NULL;
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}
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void
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g_hook_list_clear (GHookList *hook_list)
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{
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g_return_if_fail (hook_list != NULL);
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if (hook_list->is_setup)
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{
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GHook *hook;
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hook_list->is_setup = FALSE;
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hook = hook_list->hooks;
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if (!hook)
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{
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g_mem_chunk_destroy (hook_list->hook_memchunk);
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hook_list->hook_memchunk = NULL;
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}
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else
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do
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{
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GHook *tmp;
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g_hook_ref (hook_list, hook);
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g_hook_destroy_link (hook_list, hook);
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tmp = hook->next;
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g_hook_unref (hook_list, hook);
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hook = tmp;
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}
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while (hook);
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}
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}
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GHook*
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g_hook_alloc (GHookList *hook_list)
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{
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GHook *hook;
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g_return_val_if_fail (hook_list != NULL, NULL);
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g_return_val_if_fail (hook_list->is_setup, NULL);
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hook = g_chunk_new0 (GHook, hook_list->hook_memchunk);
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hook->data = NULL;
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hook->next = NULL;
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hook->prev = NULL;
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hook->flags = G_HOOK_FLAG_ACTIVE;
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hook->ref_count = 0;
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hook->hook_id = 0;
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hook->func = NULL;
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hook->destroy = NULL;
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return hook;
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}
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void
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g_hook_free (GHookList *hook_list,
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GHook *hook)
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{
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_list->is_setup);
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g_return_if_fail (hook != NULL);
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g_return_if_fail (G_HOOK_IS_UNLINKED (hook));
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if (hook_list->hook_free)
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hook_list->hook_free (hook_list, hook);
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g_chunk_free (hook, hook_list->hook_memchunk);
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}
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void
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g_hook_destroy_link (GHookList *hook_list,
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GHook *hook)
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{
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook != NULL);
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if (hook->hook_id)
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{
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hook->hook_id = 0;
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hook->flags &= ~G_HOOK_FLAG_ACTIVE;
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if (hook_list->hook_destroy)
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{
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if (hook_list->hook_destroy != G_HOOK_DEFERRED_DESTROY)
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hook_list->hook_destroy (hook_list, hook);
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}
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else if (hook->destroy)
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{
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hook->destroy (hook->data);
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hook->data = NULL;
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hook->func = NULL;
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hook->destroy = NULL;
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}
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g_hook_unref (hook_list, hook); /* counterpart to g_hook_insert_before */
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}
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}
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gboolean
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g_hook_destroy (GHookList *hook_list,
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guint hook_id)
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{
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GHook *hook;
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g_return_val_if_fail (hook_list != NULL, FALSE);
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g_return_val_if_fail (hook_id > 0, FALSE);
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hook = g_hook_get (hook_list, hook_id);
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if (hook)
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{
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g_hook_destroy_link (hook_list, hook);
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return TRUE;
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}
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return FALSE;
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}
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void
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g_hook_unref (GHookList *hook_list,
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GHook *hook)
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{
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_list->hook_memchunk != NULL);
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g_return_if_fail (hook != NULL);
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g_return_if_fail (hook->ref_count > 0);
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hook->ref_count--;
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if (!hook->ref_count)
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{
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g_return_if_fail (hook->hook_id == 0);
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g_return_if_fail (!G_HOOK_IN_CALL (hook));
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if (hook->prev)
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hook->prev->next = hook->next;
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else
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hook_list->hooks = hook->next;
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if (hook->next)
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{
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hook->next->prev = hook->prev;
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hook->next = NULL;
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}
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hook->prev = NULL;
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if (!hook_list->is_setup)
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{
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hook_list->is_setup = TRUE;
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g_hook_free (hook_list, hook);
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hook_list->is_setup = FALSE;
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if (!hook_list->hooks)
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{
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g_mem_chunk_destroy (hook_list->hook_memchunk);
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hook_list->hook_memchunk = NULL;
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}
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}
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else
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g_hook_free (hook_list, hook);
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}
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}
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void
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g_hook_ref (GHookList *hook_list,
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GHook *hook)
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{
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook != NULL);
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g_return_if_fail (hook->ref_count > 0);
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hook->ref_count++;
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}
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void
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g_hook_prepend (GHookList *hook_list,
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GHook *hook)
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{
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g_return_if_fail (hook_list != NULL);
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g_hook_insert_before (hook_list, hook_list->hooks, hook);
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}
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void
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g_hook_insert_before (GHookList *hook_list,
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GHook *sibling,
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GHook *hook)
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{
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_list->is_setup);
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g_return_if_fail (hook != NULL);
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g_return_if_fail (G_HOOK_IS_UNLINKED (hook));
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g_return_if_fail (hook->func != NULL);
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hook->hook_id = hook_list->seq_id++;
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hook->ref_count = 1; /* counterpart to g_hook_destroy_link */
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if (sibling)
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{
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if (sibling->prev)
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{
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hook->prev = sibling->prev;
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hook->prev->next = hook;
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hook->next = sibling;
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sibling->prev = hook;
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}
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else
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{
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hook_list->hooks = hook;
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hook->next = sibling;
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sibling->prev = hook;
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}
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}
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else
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{
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if (hook_list->hooks)
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{
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sibling = hook_list->hooks;
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while (sibling->next)
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sibling = sibling->next;
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hook->prev = sibling;
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sibling->next = hook;
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}
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else
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hook_list->hooks = hook;
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}
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}
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void
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g_hook_list_invoke (GHookList *hook_list,
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gboolean may_recurse)
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{
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GHook *hook;
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_list->is_setup);
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hook = g_hook_first_valid (hook_list, may_recurse);
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while (hook)
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{
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GHookFunc func;
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gboolean was_in_call;
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func = (GHookFunc) hook->func;
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was_in_call = G_HOOK_IN_CALL (hook);
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hook->flags |= G_HOOK_FLAG_IN_CALL;
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func (hook->data);
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if (!was_in_call)
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hook->flags &= ~G_HOOK_FLAG_IN_CALL;
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hook = g_hook_next_valid (hook_list, hook, may_recurse);
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}
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}
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void
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g_hook_list_invoke_check (GHookList *hook_list,
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gboolean may_recurse)
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{
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GHook *hook;
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_list->is_setup);
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hook = g_hook_first_valid (hook_list, may_recurse);
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while (hook)
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{
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GHookCheckFunc func;
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gboolean was_in_call;
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gboolean need_destroy;
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func = (GHookCheckFunc) hook->func;
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was_in_call = G_HOOK_IN_CALL (hook);
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hook->flags |= G_HOOK_FLAG_IN_CALL;
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need_destroy = !func (hook->data);
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if (!was_in_call)
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hook->flags &= ~G_HOOK_FLAG_IN_CALL;
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if (need_destroy)
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g_hook_destroy_link (hook_list, hook);
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hook = g_hook_next_valid (hook_list, hook, may_recurse);
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}
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}
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void
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g_hook_list_marshal_check (GHookList *hook_list,
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gboolean may_recurse,
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GHookCheckMarshaller marshaller,
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gpointer data)
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{
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GHook *hook;
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_list->is_setup);
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g_return_if_fail (marshaller != NULL);
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hook = g_hook_first_valid (hook_list, may_recurse);
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while (hook)
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{
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gboolean was_in_call;
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gboolean need_destroy;
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was_in_call = G_HOOK_IN_CALL (hook);
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hook->flags |= G_HOOK_FLAG_IN_CALL;
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need_destroy = !marshaller (hook, data);
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if (!was_in_call)
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hook->flags &= ~G_HOOK_FLAG_IN_CALL;
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if (need_destroy)
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g_hook_destroy_link (hook_list, hook);
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hook = g_hook_next_valid (hook_list, hook, may_recurse);
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}
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}
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void
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g_hook_list_marshal (GHookList *hook_list,
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gboolean may_recurse,
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GHookMarshaller marshaller,
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gpointer data)
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{
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GHook *hook;
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g_return_if_fail (hook_list != NULL);
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g_return_if_fail (hook_list->is_setup);
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g_return_if_fail (marshaller != NULL);
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hook = g_hook_first_valid (hook_list, may_recurse);
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while (hook)
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{
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gboolean was_in_call;
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was_in_call = G_HOOK_IN_CALL (hook);
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hook->flags |= G_HOOK_FLAG_IN_CALL;
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marshaller (hook, data);
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if (!was_in_call)
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hook->flags &= ~G_HOOK_FLAG_IN_CALL;
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hook = g_hook_next_valid (hook_list, hook, may_recurse);
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}
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}
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GHook*
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g_hook_first_valid (GHookList *hook_list,
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gboolean may_be_in_call)
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{
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g_return_val_if_fail (hook_list != NULL, NULL);
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if (hook_list->is_setup)
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{
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GHook *hook;
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hook = hook_list->hooks;
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if (hook)
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{
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g_hook_ref (hook_list, hook);
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if (G_HOOK_IS_VALID (hook) && (may_be_in_call || !G_HOOK_IN_CALL (hook)))
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return hook;
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else
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return g_hook_next_valid (hook_list, hook, may_be_in_call);
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}
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}
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return NULL;
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}
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GHook*
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g_hook_next_valid (GHookList *hook_list,
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GHook *hook,
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gboolean may_be_in_call)
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{
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GHook *ohook = hook;
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g_return_val_if_fail (hook_list != NULL, NULL);
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if (!hook)
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return NULL;
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hook = hook->next;
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while (hook)
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{
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if (G_HOOK_IS_VALID (hook) && (may_be_in_call || !G_HOOK_IN_CALL (hook)))
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{
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g_hook_ref (hook_list, hook);
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g_hook_unref (hook_list, ohook);
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return hook;
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}
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hook = hook->next;
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}
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g_hook_unref (hook_list, ohook);
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return NULL;
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}
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GHook*
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g_hook_get (GHookList *hook_list,
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guint hook_id)
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{
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GHook *hook;
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g_return_val_if_fail (hook_list != NULL, NULL);
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g_return_val_if_fail (hook_id > 0, NULL);
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hook = hook_list->hooks;
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while (hook)
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{
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if (hook->hook_id == hook_id)
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return hook;
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hook = hook->next;
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}
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return NULL;
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}
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GHook*
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g_hook_find (GHookList *hook_list,
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gboolean need_valids,
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GHookFindFunc func,
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gpointer data)
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{
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GHook *hook;
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g_return_val_if_fail (hook_list != NULL, NULL);
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g_return_val_if_fail (func != NULL, NULL);
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hook = hook_list->hooks;
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while (hook)
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{
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GHook *tmp;
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/* test only non-destroyed hooks */
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if (!hook->hook_id)
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{
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hook = hook->next;
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continue;
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}
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g_hook_ref (hook_list, hook);
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if (func (hook, data) && hook->hook_id && (!need_valids || G_HOOK_ACTIVE (hook)))
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{
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g_hook_unref (hook_list, hook);
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return hook;
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}
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tmp = hook->next;
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g_hook_unref (hook_list, hook);
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hook = tmp;
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}
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return NULL;
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}
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GHook*
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g_hook_find_data (GHookList *hook_list,
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gboolean need_valids,
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gpointer data)
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{
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GHook *hook;
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g_return_val_if_fail (hook_list != NULL, NULL);
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hook = hook_list->hooks;
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while (hook)
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{
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/* test only non-destroyed hooks */
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if (hook->data == data &&
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hook->hook_id &&
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(!need_valids || G_HOOK_ACTIVE (hook)))
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return hook;
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hook = hook->next;
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}
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return NULL;
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}
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GHook*
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g_hook_find_func (GHookList *hook_list,
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gboolean need_valids,
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gpointer func)
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{
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GHook *hook;
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|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
gint
|
|
g_hook_compare_ids (GHook *new_hook,
|
|
GHook *sibling)
|
|
{
|
|
return ((glong) new_hook->hook_id) - ((glong) sibling->hook_id);
|
|
}
|