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Annotation of embedaddon/ntp/lib/isc/ondestroy.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
                      3:  * Copyright (C) 2000, 2001  Internet Software Consortium.
                      4:  *
                      5:  * Permission to use, copy, modify, and/or distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
                     10:  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
                     11:  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
                     12:  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
                     13:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
                     14:  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
                     15:  * PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: 
                     18: /* $Id: ondestroy.c,v 1.16 2007/06/19 23:47:17 tbox Exp $ */
                     19: 
                     20: /*! \file */
                     21: 
                     22: #include <config.h>
                     23: 
                     24: #include <stddef.h>
                     25: 
                     26: #include <isc/event.h>
                     27: #include <isc/magic.h>
                     28: #include <isc/ondestroy.h>
                     29: #include <isc/task.h>
                     30: #include <isc/util.h>
                     31: 
                     32: #define ONDESTROY_MAGIC                ISC_MAGIC('D', 'e', 'S', 't')
                     33: #define VALID_ONDESTROY(s)     ISC_MAGIC_VALID(s, ONDESTROY_MAGIC)
                     34: 
                     35: void
                     36: isc_ondestroy_init(isc_ondestroy_t *ondest) {
                     37:        ondest->magic = ONDESTROY_MAGIC;
                     38:        ISC_LIST_INIT(ondest->events);
                     39: }
                     40: 
                     41: isc_result_t
                     42: isc_ondestroy_register(isc_ondestroy_t *ondest, isc_task_t *task,
                     43:                       isc_event_t **eventp)
                     44: {
                     45:        isc_event_t *theevent;
                     46:        isc_task_t *thetask = NULL;
                     47: 
                     48:        REQUIRE(VALID_ONDESTROY(ondest));
                     49:        REQUIRE(task != NULL);
                     50:        REQUIRE(eventp != NULL);
                     51: 
                     52:        theevent = *eventp;
                     53: 
                     54:        REQUIRE(theevent != NULL);
                     55: 
                     56:        isc_task_attach(task, &thetask);
                     57: 
                     58:        theevent->ev_sender = thetask;
                     59: 
                     60:        ISC_LIST_APPEND(ondest->events, theevent, ev_link);
                     61: 
                     62:        return (ISC_R_SUCCESS);
                     63: }
                     64: 
                     65: void
                     66: isc_ondestroy_notify(isc_ondestroy_t *ondest, void *sender) {
                     67:        isc_event_t *eventp;
                     68:        isc_task_t *task;
                     69: 
                     70:        REQUIRE(VALID_ONDESTROY(ondest));
                     71: 
                     72:        eventp = ISC_LIST_HEAD(ondest->events);
                     73:        while (eventp != NULL) {
                     74:                ISC_LIST_UNLINK(ondest->events, eventp, ev_link);
                     75: 
                     76:                task = eventp->ev_sender;
                     77:                eventp->ev_sender = sender;
                     78: 
                     79:                isc_task_sendanddetach(&task, &eventp);
                     80: 
                     81:                eventp = ISC_LIST_HEAD(ondest->events);
                     82:        }
                     83: }
                     84: 
                     85: