Import Upstream version 2.72.4
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glib/ghook.h
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glib/ghook.h
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/* 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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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GLib Team and others 1997-2000. 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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#ifndef __G_HOOK_H__
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#define __G_HOOK_H__
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#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
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#error "Only <glib.h> can be included directly."
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#endif
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#include <glib/gmem.h>
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G_BEGIN_DECLS
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/* --- typedefs --- */
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typedef struct _GHook GHook;
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typedef struct _GHookList GHookList;
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typedef gint (*GHookCompareFunc) (GHook *new_hook,
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GHook *sibling);
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typedef gboolean (*GHookFindFunc) (GHook *hook,
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gpointer data);
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typedef void (*GHookMarshaller) (GHook *hook,
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gpointer marshal_data);
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typedef gboolean (*GHookCheckMarshaller) (GHook *hook,
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gpointer marshal_data);
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typedef void (*GHookFunc) (gpointer data);
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typedef gboolean (*GHookCheckFunc) (gpointer data);
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typedef void (*GHookFinalizeFunc) (GHookList *hook_list,
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GHook *hook);
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typedef enum
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{
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G_HOOK_FLAG_ACTIVE = 1 << 0,
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G_HOOK_FLAG_IN_CALL = 1 << 1,
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G_HOOK_FLAG_MASK = 0x0f
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} GHookFlagMask;
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#define G_HOOK_FLAG_USER_SHIFT (4)
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/* --- structures --- */
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struct _GHookList
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{
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gulong seq_id;
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guint hook_size : 16;
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guint is_setup : 1;
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GHook *hooks;
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gpointer dummy3;
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GHookFinalizeFunc finalize_hook;
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gpointer dummy[2];
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};
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struct _GHook
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{
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gpointer data;
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GHook *next;
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GHook *prev;
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guint ref_count;
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gulong hook_id;
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guint flags;
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gpointer func;
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GDestroyNotify destroy;
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};
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/* --- macros --- */
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#define G_HOOK(hook) ((GHook*) (hook))
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#define G_HOOK_FLAGS(hook) (G_HOOK (hook)->flags)
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#define G_HOOK_ACTIVE(hook) ((G_HOOK_FLAGS (hook) & \
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G_HOOK_FLAG_ACTIVE) != 0)
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#define G_HOOK_IN_CALL(hook) ((G_HOOK_FLAGS (hook) & \
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G_HOOK_FLAG_IN_CALL) != 0)
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#define G_HOOK_IS_VALID(hook) (G_HOOK (hook)->hook_id != 0 && \
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(G_HOOK_FLAGS (hook) & \
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G_HOOK_FLAG_ACTIVE))
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#define G_HOOK_IS_UNLINKED(hook) (G_HOOK (hook)->next == NULL && \
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G_HOOK (hook)->prev == NULL && \
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G_HOOK (hook)->hook_id == 0 && \
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G_HOOK (hook)->ref_count == 0)
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/* --- prototypes --- */
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/* callback maintenance functions */
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GLIB_AVAILABLE_IN_ALL
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void g_hook_list_init (GHookList *hook_list,
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guint hook_size);
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GLIB_AVAILABLE_IN_ALL
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void g_hook_list_clear (GHookList *hook_list);
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GLIB_AVAILABLE_IN_ALL
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GHook* g_hook_alloc (GHookList *hook_list);
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GLIB_AVAILABLE_IN_ALL
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void g_hook_free (GHookList *hook_list,
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GHook *hook);
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GLIB_AVAILABLE_IN_ALL
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GHook * g_hook_ref (GHookList *hook_list,
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GHook *hook);
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GLIB_AVAILABLE_IN_ALL
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void g_hook_unref (GHookList *hook_list,
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GHook *hook);
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GLIB_AVAILABLE_IN_ALL
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gboolean g_hook_destroy (GHookList *hook_list,
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gulong hook_id);
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GLIB_AVAILABLE_IN_ALL
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void g_hook_destroy_link (GHookList *hook_list,
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GHook *hook);
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GLIB_AVAILABLE_IN_ALL
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void g_hook_prepend (GHookList *hook_list,
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GHook *hook);
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GLIB_AVAILABLE_IN_ALL
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void g_hook_insert_before (GHookList *hook_list,
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GHook *sibling,
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GHook *hook);
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GLIB_AVAILABLE_IN_ALL
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void g_hook_insert_sorted (GHookList *hook_list,
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GHook *hook,
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GHookCompareFunc func);
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GLIB_AVAILABLE_IN_ALL
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GHook* g_hook_get (GHookList *hook_list,
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gulong hook_id);
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GLIB_AVAILABLE_IN_ALL
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GHook* 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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GLIB_AVAILABLE_IN_ALL
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GHook* g_hook_find_data (GHookList *hook_list,
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gboolean need_valids,
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gpointer data);
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GLIB_AVAILABLE_IN_ALL
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GHook* g_hook_find_func (GHookList *hook_list,
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gboolean need_valids,
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gpointer func);
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GLIB_AVAILABLE_IN_ALL
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GHook* g_hook_find_func_data (GHookList *hook_list,
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gboolean need_valids,
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gpointer func,
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gpointer data);
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/* return the first valid hook, and increment its reference count */
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GLIB_AVAILABLE_IN_ALL
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GHook* g_hook_first_valid (GHookList *hook_list,
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gboolean may_be_in_call);
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/* return the next valid hook with incremented reference count, and
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* decrement the reference count of the original hook
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*/
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GLIB_AVAILABLE_IN_ALL
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GHook* 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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/* GHookCompareFunc implementation to insert hooks sorted by their id */
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GLIB_AVAILABLE_IN_ALL
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gint g_hook_compare_ids (GHook *new_hook,
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GHook *sibling);
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/* convenience macros */
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#define g_hook_append( hook_list, hook ) \
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g_hook_insert_before ((hook_list), NULL, (hook))
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/* invoke all valid hooks with the (*GHookFunc) signature.
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*/
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GLIB_AVAILABLE_IN_ALL
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void g_hook_list_invoke (GHookList *hook_list,
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gboolean may_recurse);
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/* invoke all valid hooks with the (*GHookCheckFunc) signature,
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* and destroy the hook if FALSE is returned.
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*/
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GLIB_AVAILABLE_IN_ALL
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void g_hook_list_invoke_check (GHookList *hook_list,
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gboolean may_recurse);
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/* invoke a marshaller on all valid hooks.
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*/
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GLIB_AVAILABLE_IN_ALL
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void 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 marshal_data);
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GLIB_AVAILABLE_IN_ALL
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void 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 marshal_data);
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G_END_DECLS
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#endif /* __G_HOOK_H__ */
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