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Nama	Ukuran	Aksi
gbinding.h	6.44 MB	View DL Edit
gboxed.h	3.87 MB	View DL Edit
gclosure.h	10.77 MB	View DL Edit
genums.h	7.85 MB	View DL Edit
glib-enumtypes.h	1014 B	View DL Edit
glib-types.h	8.85 MB	View DL Edit
gmarshal.h	21.33 MB	View DL Edit
gobject-autocleanups.h	1.35 MB	View DL Edit
gobject.h	33.59 MB	View DL Edit
gobjectnotifyqueue.c	5.39 MB	View DL Edit
gparam.h	16.14 MB	View DL Edit
gparamspecs.h	34.03 MB	View DL Edit
gsignal.h	24.92 MB	View DL Edit
gsourceclosure.h	1.25 MB	View DL Edit
gtype.h	90.44 MB	View DL Edit
gtypemodule.h	10.58 MB	View DL Edit
gtypeplugin.h	4.85 MB	View DL Edit
gvalue.h	5.9 MB	View DL Edit
gvaluearray.h	3.14 MB	View DL Edit
gvaluecollector.h	9.59 MB	View DL Edit
gvaluetypes.h	10.01 MB	View DL Edit

Edit file: /usr/include/glib-2.0/gobject/gobjectnotifyqueue.c

/* GObject - GLib Type, Object, Parameter and Signal Library
 * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
 *
 * 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 2.1 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, see <http://www.gnu.org/licenses/>.
 */

/* WARNING:
 *
 *    This file is INSTALLED and other projects (outside of glib)
 *    #include its contents.
 */

#ifndef __G_OBJECT_NOTIFY_QUEUE_H__
#define __G_OBJECT_NOTIFY_QUEUE_H__

#include <string.h> /* memset */

#include <glib-object.h>

G_BEGIN_DECLS

/* --- typedefs --- */
typedef struct _GObjectNotifyContext          GObjectNotifyContext;
typedef struct _GObjectNotifyQueue            GObjectNotifyQueue;
typedef void (*GObjectNotifyQueueDispatcher) (GObject     *object,
					      guint        n_pspecs,
					      GParamSpec **pspecs);

/* --- structures --- */
struct _GObjectNotifyContext
{
  GQuark                       quark_notify_queue;
  GObjectNotifyQueueDispatcher dispatcher;
  GTrashStack                 *_nqueue_trash; /* unused */
};
struct _GObjectNotifyQueue
{
  GObjectNotifyContext *context;
  GSList               *pspecs;
  guint16               n_pspecs;
  guint16               freeze_count;
};

G_LOCK_DEFINE_STATIC(notify_lock);

/* --- functions --- */
static void
g_object_notify_queue_free (gpointer data)
{
  GObjectNotifyQueue *nqueue = data;

g_slist_free (nqueue->pspecs);
  g_slice_free (GObjectNotifyQueue, nqueue);
}

static inline GObjectNotifyQueue*
g_object_notify_queue_freeze (GObject		   *object,
			      GObjectNotifyContext *context)
{
  GObjectNotifyQueue *nqueue;

G_LOCK(notify_lock);
  nqueue = g_datalist_id_get_data (&object->qdata, context->quark_notify_queue);
  if (!nqueue)
    {
      nqueue = g_slice_new0 (GObjectNotifyQueue);
      nqueue->context = context;
      g_datalist_id_set_data_full (&object->qdata, context->quark_notify_queue,
				   nqueue, g_object_notify_queue_free);
    }

if (nqueue->freeze_count >= 65535)
    g_critical("Free queue for %s (%p) is larger than 65535,"
               " called g_object_freeze_notify() too often."
               " Forgot to call g_object_thaw_notify() or infinite loop",
               G_OBJECT_TYPE_NAME (object), object);
  else
    nqueue->freeze_count++;
  G_UNLOCK(notify_lock);

return nqueue;
}

static inline void
g_object_notify_queue_thaw (GObject            *object,
			    GObjectNotifyQueue *nqueue)
{
  GObjectNotifyContext *context = nqueue->context;
  GParamSpec *pspecs_mem[16], **pspecs, **free_me = NULL;
  GSList *slist;
  guint n_pspecs = 0;

g_return_if_fail (nqueue->freeze_count > 0);
  g_return_if_fail (g_atomic_int_get(&object->ref_count) > 0);

G_LOCK(notify_lock);

/* Just make sure we never get into some nasty race condition */
  if (G_UNLIKELY(nqueue->freeze_count == 0)) {
    G_UNLOCK(notify_lock);
    g_warning ("%s: property-changed notification for %s(%p) is not frozen",
	       G_STRFUNC, G_OBJECT_TYPE_NAME (object), object);
    return;
  }

nqueue->freeze_count--;
  if (nqueue->freeze_count) {
    G_UNLOCK(notify_lock);
    return;
  }

pspecs = nqueue->n_pspecs > 16 ? free_me = g_new (GParamSpec*, nqueue->n_pspecs) : pspecs_mem;

for (slist = nqueue->pspecs; slist; slist = slist->next)
    {
      pspecs[n_pspecs++] = slist->data;
    }
  g_datalist_id_set_data (&object->qdata, context->quark_notify_queue, NULL);

G_UNLOCK(notify_lock);

if (n_pspecs)
    context->dispatcher (object, n_pspecs, pspecs);
  g_free (free_me);
}

static inline void
g_object_notify_queue_clear (GObject            *object,
			     GObjectNotifyQueue *nqueue)
{
  g_return_if_fail (nqueue->freeze_count > 0);

G_LOCK(notify_lock);

g_slist_free (nqueue->pspecs);
  nqueue->pspecs = NULL;
  nqueue->n_pspecs = 0;

G_UNLOCK(notify_lock);
}

static inline void
g_object_notify_queue_add (GObject            *object,
			   GObjectNotifyQueue *nqueue,
			   GParamSpec	      *pspec)
{
  if (pspec->flags & G_PARAM_READABLE)
    {
      GParamSpec *redirect;

G_LOCK(notify_lock);

g_return_if_fail (nqueue->n_pspecs < 65535);

redirect = g_param_spec_get_redirect_target (pspec);
      if (redirect)
	pspec = redirect;
	    
      /* we do the deduping in _thaw */
      if (g_slist_find (nqueue->pspecs, pspec) == NULL)
        {
          nqueue->pspecs = g_slist_prepend (nqueue->pspecs, pspec);
          nqueue->n_pspecs++;
        }

G_UNLOCK(notify_lock);
    }
}

/* NB: This function is not threadsafe, do not ever use it if
 * you need a threadsafe notify queue.
 * Use g_object_notify_queue_freeze() to acquire the queue and
 * g_object_notify_queue_thaw() after you are done instead.
 */
static inline GObjectNotifyQueue*
g_object_notify_queue_from_object (GObject              *object,
                                   GObjectNotifyContext *context)
{
  return g_datalist_id_get_data (&object->qdata, context->quark_notify_queue);
}

G_END_DECLS

#endif /* __G_OBJECT_NOTIFY_QUEUE_H__ */

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