0135dddabd
* src/common/hooks.c
fix crash when pointer stored in hash table could get invalid
when a plugin is unloaded
128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
/*
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* Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
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* Copyright (C) 1999-2002 Hiroyuki Yamamoto
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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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#include "utils.h"
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#include "hooks.h"
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static GHashTable *hooklist_table;
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GHookList *hooks_get_hooklist(const gchar *hooklist_name)
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{
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GHookList *hooklist;
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if (hooklist_table == NULL)
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hooklist_table = g_hash_table_new(g_str_hash, g_str_equal);
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hooklist = (GHookList *) g_hash_table_lookup(hooklist_table, hooklist_name);
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if (hooklist != NULL)
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return hooklist;
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hooklist = g_new0(GHookList, 1);
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g_hook_list_init(hooklist, sizeof(GHook));
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g_hash_table_insert(hooklist_table, g_strdup(hooklist_name), hooklist);
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return hooklist;
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}
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guint hooks_register_hook(const gchar *hooklist_name,
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SylpheedHookFunction hook_func,
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gpointer userdata)
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{
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GHookList *hooklist;
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GHook *hook;
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g_return_val_if_fail(hooklist_name != NULL, (guint)-1);
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g_return_val_if_fail(hook_func != NULL, (guint)-1);
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hooklist = hooks_get_hooklist(hooklist_name);
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g_return_val_if_fail(hooklist != NULL, (guint)-1);
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hook = g_hook_alloc(hooklist);
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g_return_val_if_fail(hook != NULL, (guint)-1);
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hook->func = hook_func;
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hook->data = userdata;
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g_hook_append(hooklist, hook);
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debug_print("registed new hook for '%s' as id %d\n", hooklist_name, hook->hook_id);
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return hook->hook_id;
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}
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void hooks_unregister_hook(const gchar *hooklist_name,
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guint hook_id)
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{
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GHookList *hooklist;
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GHook *hook;
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g_return_if_fail(hooklist_name != NULL);
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hooklist = hooks_get_hooklist(hooklist_name);
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g_return_if_fail(hooklist != NULL);
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hook = g_hook_get(hooklist, hook_id);
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g_return_if_fail(hook != NULL);
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debug_print("unregisted hook %d in '%s'\n", hook->hook_id, hooklist_name);
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g_hook_destroy(hooklist, hook_id);
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}
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struct MarshalData
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{
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gpointer source;
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gboolean abort;
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};
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static void hooks_marshal(GHook *hook, gpointer data)
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{
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gboolean (*func) (gpointer source, gpointer data);
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struct MarshalData *marshal_data = (struct MarshalData *)data;
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if (!marshal_data->abort) {
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func = hook->func;
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marshal_data->abort = func(marshal_data->source, hook->data);
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}
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}
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gboolean hooks_invoke(const gchar *hooklist_name,
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gpointer source)
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{
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GHookList *hooklist;
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struct MarshalData marshal_data;
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g_return_val_if_fail(hooklist_name != NULL, FALSE);
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hooklist = hooks_get_hooklist(hooklist_name);
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g_return_val_if_fail(hooklist != NULL, FALSE);
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marshal_data.source = source;
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marshal_data.abort = FALSE;
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g_hook_list_marshal(hooklist, TRUE, hooks_marshal, &marshal_data);
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return marshal_data.abort;
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}
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