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ntp 4.2.6p5

    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 1.1.1.1 2012/05/29 12:08:38 misho 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: