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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* hgsnapshot.c
* Copyright (C) 2005-2011 Akira TAGOH
*
* Authors:
* Akira TAGOH <akira@tagoh.org>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include "hgmem.h"
#include "hgsnapshot.h"
#include "hgsnapshot.proto.h"
struct _hg_snapshot_t {
hg_object_t o;
hg_mem_snapshot_data_t *snapshot;
};
HG_DEFINE_VTABLE (snapshot);
/*< private >*/
static gsize
_hg_object_snapshot_get_capsulated_size(void)
{
return HG_ALIGNED_TO_POINTER (sizeof (hg_snapshot_t));
}
static guint
_hg_object_snapshot_get_allocation_flags(void)
{
return HG_MEM_FLAGS_DEFAULT_WITHOUT_RESTORABLE;
}
static gboolean
_hg_object_snapshot_initialize(hg_object_t *object,
va_list args)
{
return TRUE;
}
static void
_hg_object_snapshot_free(hg_object_t *object)
{
hg_snapshot_t *snapshot = (hg_snapshot_t *)object;
hg_return_if_fail (object->type == HG_TYPE_SNAPSHOT);
if (snapshot->snapshot)
hg_mem_snapshot_free(snapshot->o.mem,
snapshot->snapshot);
}
static hg_quark_t
_hg_object_snapshot_copy(hg_object_t *object,
hg_quark_iterate_func_t func,
gpointer user_data,
gpointer *ret,
GError **error)
{
hg_return_val_if_fail (object->type == HG_TYPE_SNAPSHOT, Qnil);
return object->self;
}
static gchar *
_hg_object_snapshot_to_cstr(hg_object_t *object,
hg_quark_iterate_func_t func,
gpointer user_data,
GError **error)
{
hg_return_val_if_fail (object->type == HG_TYPE_SNAPSHOT, NULL);
return g_strdup("-save-");
}
static gboolean
_hg_object_snapshot_gc_mark(hg_object_t *object,
hg_gc_iterate_func_t func,
gpointer user_data,
GError **error)
{
hg_return_val_if_fail (object->type == HG_TYPE_SNAPSHOT, FALSE);
return TRUE;
}
static gboolean
_hg_object_snapshot_compare(hg_object_t *o1,
hg_object_t *o2,
hg_quark_compare_func_t func,
gpointer user_data)
{
hg_return_val_if_fail (o1->type == HG_TYPE_SNAPSHOT, FALSE);
hg_return_val_if_fail (o2->type == HG_TYPE_SNAPSHOT, FALSE);
return o1->self == o2->self;
}
/*< public >*/
/**
* hg_snapshot_new:
* @mem:
*
* FIXME
*
* Returns:
*/
hg_quark_t
hg_snapshot_new(hg_mem_t *mem,
gpointer *ret)
{
hg_quark_t retval;
hg_snapshot_t *s = NULL;
hg_return_val_if_fail (mem != NULL, Qnil);
retval = hg_object_new(mem, (gpointer *)&s, HG_TYPE_SNAPSHOT, 0);
if (retval != Qnil) {
if (ret)
*ret = s;
else
hg_mem_unlock_object(mem, retval);
}
return retval;
}
/**
* hg_snapshot_save:
* @snapshot:
*
* FIXME
*
* Returns:
*/
gboolean
hg_snapshot_save(hg_snapshot_t *snapshot)
{
hg_return_val_if_fail (snapshot != NULL, FALSE);
snapshot->snapshot = hg_mem_save_snapshot(snapshot->o.mem);
if (snapshot->snapshot == NULL)
return FALSE;
return TRUE;
}
/**
* hg_snapshot_restore:
* @snapshot:
* @func:
* @data:
*
* FIXME
*
* Returns:
*/
gboolean
hg_snapshot_restore(hg_snapshot_t *snapshot,
hg_gc_func_t func,
gpointer data)
{
gboolean retval;
hg_return_val_if_fail (snapshot != NULL, FALSE);
hg_return_val_if_fail (snapshot->snapshot != NULL, FALSE);
hg_mem_collect_garbage(snapshot->o.mem);
retval = hg_mem_restore_snapshot(snapshot->o.mem,
snapshot->snapshot,
func,
data);
if (retval) {
snapshot->snapshot = NULL;
}
return retval;
}
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