1*eabc0478Schristos /* $NetBSD: ondestroy.c,v 1.2 2024/08/18 20:47:14 christos Exp $ */ 2897be3a4Schristos 3897be3a4Schristos /* 4897be3a4Schristos * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 5897be3a4Schristos * Copyright (C) 2000, 2001 Internet Software Consortium. 6897be3a4Schristos * 7897be3a4Schristos * Permission to use, copy, modify, and/or distribute this software for any 8897be3a4Schristos * purpose with or without fee is hereby granted, provided that the above 9897be3a4Schristos * copyright notice and this permission notice appear in all copies. 10897be3a4Schristos * 11897be3a4Schristos * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 12897be3a4Schristos * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 13897be3a4Schristos * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 14897be3a4Schristos * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 15897be3a4Schristos * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 16897be3a4Schristos * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17897be3a4Schristos * PERFORMANCE OF THIS SOFTWARE. 18897be3a4Schristos */ 19897be3a4Schristos 20897be3a4Schristos /* Id: ondestroy.c,v 1.16 2007/06/19 23:47:17 tbox Exp */ 21897be3a4Schristos 22897be3a4Schristos /*! \file */ 23897be3a4Schristos 24897be3a4Schristos #include <config.h> 25897be3a4Schristos 26897be3a4Schristos #include <stddef.h> 27897be3a4Schristos 28897be3a4Schristos #include <isc/event.h> 29897be3a4Schristos #include <isc/magic.h> 30897be3a4Schristos #include <isc/ondestroy.h> 31897be3a4Schristos #include <isc/task.h> 32897be3a4Schristos #include <isc/util.h> 33897be3a4Schristos 34897be3a4Schristos #define ONDESTROY_MAGIC ISC_MAGIC('D', 'e', 'S', 't') 35897be3a4Schristos #define VALID_ONDESTROY(s) ISC_MAGIC_VALID(s, ONDESTROY_MAGIC) 36897be3a4Schristos 37897be3a4Schristos void 38897be3a4Schristos isc_ondestroy_init(isc_ondestroy_t *ondest) { 39897be3a4Schristos ondest->magic = ONDESTROY_MAGIC; 40897be3a4Schristos ISC_LIST_INIT(ondest->events); 41897be3a4Schristos } 42897be3a4Schristos 43897be3a4Schristos isc_result_t 44897be3a4Schristos isc_ondestroy_register(isc_ondestroy_t *ondest, isc_task_t *task, 45897be3a4Schristos isc_event_t **eventp) 46897be3a4Schristos { 47897be3a4Schristos isc_event_t *theevent; 48897be3a4Schristos isc_task_t *thetask = NULL; 49897be3a4Schristos 50897be3a4Schristos REQUIRE(VALID_ONDESTROY(ondest)); 51897be3a4Schristos REQUIRE(task != NULL); 52897be3a4Schristos REQUIRE(eventp != NULL); 53897be3a4Schristos 54897be3a4Schristos theevent = *eventp; 55897be3a4Schristos 56897be3a4Schristos REQUIRE(theevent != NULL); 57897be3a4Schristos 58897be3a4Schristos isc_task_attach(task, &thetask); 59897be3a4Schristos 60897be3a4Schristos theevent->ev_sender = thetask; 61897be3a4Schristos 62897be3a4Schristos ISC_LIST_APPEND(ondest->events, theevent, ev_link); 63897be3a4Schristos 64897be3a4Schristos return (ISC_R_SUCCESS); 65897be3a4Schristos } 66897be3a4Schristos 67897be3a4Schristos void 68897be3a4Schristos isc_ondestroy_notify(isc_ondestroy_t *ondest, void *sender) { 69897be3a4Schristos isc_event_t *eventp; 70897be3a4Schristos isc_task_t *task; 71897be3a4Schristos 72897be3a4Schristos REQUIRE(VALID_ONDESTROY(ondest)); 73897be3a4Schristos 74897be3a4Schristos eventp = ISC_LIST_HEAD(ondest->events); 75897be3a4Schristos while (eventp != NULL) { 76897be3a4Schristos ISC_LIST_UNLINK(ondest->events, eventp, ev_link); 77897be3a4Schristos 78897be3a4Schristos task = eventp->ev_sender; 79897be3a4Schristos eventp->ev_sender = sender; 80897be3a4Schristos 81897be3a4Schristos isc_task_sendanddetach(&task, &eventp); 82897be3a4Schristos 83897be3a4Schristos eventp = ISC_LIST_HEAD(ondest->events); 84897be3a4Schristos } 85897be3a4Schristos } 86897be3a4Schristos 87897be3a4Schristos 88