/* * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1998-2001 Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ /* $Id: event.c,v 1.17.18.2 2005/04/29 00:16:45 marka Exp $ */ /*! * \file * \author Principal Author: Bob Halley */ #include #include #include #include /*** *** Events. ***/ static void destroy(isc_event_t *event) { isc_mem_t *mctx = event->ev_destroy_arg; isc_mem_put(mctx, event, event->ev_size); } isc_event_t * isc_event_allocate(isc_mem_t *mctx, void *sender, isc_eventtype_t type, isc_taskaction_t action, const void *arg, size_t size) { isc_event_t *event; void *deconst_arg; REQUIRE(size >= sizeof(struct isc_event)); REQUIRE(action != NULL); event = isc_mem_get(mctx, size); if (event == NULL) return (NULL); /* * Removing the const attribute from "arg" is the best of two * evils here. If the event->ev_arg member is made const, then * it affects a great many users of the task/event subsystem * which are not passing in an "arg" which starts its life as * const. Changing isc_event_allocate() and isc_task_onshutdown() * to not have "arg" prototyped as const (which is quite legitimate, * because neither of those functions modify arg) can cause * compiler whining anytime someone does want to use a const * arg that they themselves never modify, such as with * gcc -Wwrite-strings and using a string "arg". */ DE_CONST(arg, deconst_arg); ISC_EVENT_INIT(event, size, 0, NULL, type, action, deconst_arg, sender, destroy, mctx); return (event); } void isc_event_free(isc_event_t **eventp) { isc_event_t *event; REQUIRE(eventp != NULL); event = *eventp; REQUIRE(event != NULL); if (event->ev_destroy != NULL) (event->ev_destroy)(event); *eventp = NULL; }