1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #include	"dthdr.h"
23 
24 /*	Close a dictionary
25 **
26 **	Written by Kiem-Phong Vo (11/15/2010)
27 */
28 #if __STD_C
dtclose(Dt_t * dt)29 int dtclose(Dt_t* dt)
30 #else
31 int dtclose(dt)
32 Dt_t*	dt;
33 #endif
34 {
35 	int		ev, type;
36 	Dt_t		pdt;
37 	Dtdisc_t	*disc = dt->disc;
38 
39 	if(!dt || dt->nview > 0 ) /* can't close if being viewed */
40 		return -1;
41 
42 	if(disc && disc->eventf) /* announce closing event */
43 		ev = (*disc->eventf)(dt, DT_CLOSE, (Void_t*)1, disc);
44 	else	ev = 0;
45 	if(ev < 0) /* cannot close */
46 		return -1;
47 
48 	if(dt->view) /* turn off viewing at this point */
49 		dtview(dt,NIL(Dt_t*));
50 
51 	type = dt->data->type; /* save before memory is freed */
52 	memcpy(&pdt, dt, sizeof(Dt_t));
53 
54 	if(ev == 0 ) /* release all allocated data */
55 	{	(void)(*(dt->meth->searchf))(dt,NIL(Void_t*),DT_CLEAR);
56 		(void)(*dt->meth->eventf)(dt, DT_CLOSE, (Void_t*)0);
57 		/**/DEBUG_ASSERT(!dt->data);
58 	}
59 	if(!(type&DT_INDATA) )
60 		(void)free(dt);
61 
62 	if(disc && disc->eventf) /* announce end of closing activities */
63 		(void)(*disc->eventf)(&pdt, DT_ENDCLOSE, (Void_t*)0, disc);
64 
65 	return 0;
66 }
67