/* $NetBSD: event.c,v 1.2.6.1 2024/02/29 12:34:59 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ /*! * \file */ #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, void *arg, size_t size) { isc_event_t *event; REQUIRE(size >= sizeof(struct isc_event)); REQUIRE(action != NULL); event = isc_mem_get(mctx, size); ISC_EVENT_INIT(event, size, 0, NULL, type, action, arg, sender, destroy, mctx); return (event); } isc_event_t * isc_event_constallocate(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); /* * 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; *eventp = NULL; REQUIRE(event != NULL); REQUIRE(!ISC_LINK_LINKED(event, ev_link)); REQUIRE(!ISC_LINK_LINKED(event, ev_ratelink)); if (event->ev_destroy != NULL) { (event->ev_destroy)(event); } }