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