1 /* $NetBSD: ondestroy.c,v 1.2 2024/08/18 20:47:14 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 5 * Copyright (C) 2000, 2001 Internet Software Consortium. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* Id: ondestroy.c,v 1.16 2007/06/19 23:47:17 tbox Exp */ 21 22 /*! \file */ 23 24 #include <config.h> 25 26 #include <stddef.h> 27 28 #include <isc/event.h> 29 #include <isc/magic.h> 30 #include <isc/ondestroy.h> 31 #include <isc/task.h> 32 #include <isc/util.h> 33 34 #define ONDESTROY_MAGIC ISC_MAGIC('D', 'e', 'S', 't') 35 #define VALID_ONDESTROY(s) ISC_MAGIC_VALID(s, ONDESTROY_MAGIC) 36 37 void 38 isc_ondestroy_init(isc_ondestroy_t *ondest) { 39 ondest->magic = ONDESTROY_MAGIC; 40 ISC_LIST_INIT(ondest->events); 41 } 42 43 isc_result_t 44 isc_ondestroy_register(isc_ondestroy_t *ondest, isc_task_t *task, 45 isc_event_t **eventp) 46 { 47 isc_event_t *theevent; 48 isc_task_t *thetask = NULL; 49 50 REQUIRE(VALID_ONDESTROY(ondest)); 51 REQUIRE(task != NULL); 52 REQUIRE(eventp != NULL); 53 54 theevent = *eventp; 55 56 REQUIRE(theevent != NULL); 57 58 isc_task_attach(task, &thetask); 59 60 theevent->ev_sender = thetask; 61 62 ISC_LIST_APPEND(ondest->events, theevent, ev_link); 63 64 return (ISC_R_SUCCESS); 65 } 66 67 void 68 isc_ondestroy_notify(isc_ondestroy_t *ondest, void *sender) { 69 isc_event_t *eventp; 70 isc_task_t *task; 71 72 REQUIRE(VALID_ONDESTROY(ondest)); 73 74 eventp = ISC_LIST_HEAD(ondest->events); 75 while (eventp != NULL) { 76 ISC_LIST_UNLINK(ondest->events, eventp, ev_link); 77 78 task = eventp->ev_sender; 79 eventp->ev_sender = sender; 80 81 isc_task_sendanddetach(&task, &eventp); 82 83 eventp = ISC_LIST_HEAD(ondest->events); 84 } 85 } 86 87 88