/* $NetBSD: managers.c,v 1.3 2022/09/23 12:15:33 christos 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. */ #include <isc/managers.h> #include <isc/util.h> #include "netmgr_p.h" #include "task_p.h" isc_result_t isc_managers_create(isc_mem_t *mctx, size_t workers, size_t quantum, isc_nm_t **netmgrp, isc_taskmgr_t **taskmgrp) { isc_result_t result; isc_taskmgr_t *taskmgr = NULL; isc_nm_t *netmgr = NULL; REQUIRE(netmgrp != NULL && *netmgrp == NULL); isc__netmgr_create(mctx, workers, &netmgr); *netmgrp = netmgr; INSIST(netmgr != NULL); REQUIRE(taskmgrp == NULL || *taskmgrp == NULL); if (taskmgrp != NULL) { INSIST(netmgr != NULL); result = isc__taskmgr_create(mctx, quantum, netmgr, &taskmgr); if (result != ISC_R_SUCCESS) { UNEXPECTED_ERROR(__FILE__, __LINE__, "isc_managers_create() failed: %s", isc_result_totext(result)); goto fail; } *taskmgrp = taskmgr; } return (ISC_R_SUCCESS); fail: isc_managers_destroy(netmgrp, taskmgrp); return (result); } void isc_managers_destroy(isc_nm_t **netmgrp, isc_taskmgr_t **taskmgrp) { /* * If we have a taskmgr to clean up, then we must also have a netmgr. */ REQUIRE(taskmgrp != NULL || netmgrp == NULL); /* * The sequence of operations here is important: * * 1. Initiate shutdown of the taskmgr, sending shutdown events to * all tasks that are not already shutting down. */ if (taskmgrp != NULL) { INSIST(*taskmgrp != NULL); isc__taskmgr_shutdown(*taskmgrp); } /* * 2. Initiate shutdown of the network manager, freeing clients * and other resources and preventing new connections, but do * not stop processing of existing events. */ if (netmgrp != NULL) { INSIST(*netmgrp != NULL); isc__netmgr_shutdown(*netmgrp); } /* * 3. Finish destruction of the task manager when all tasks * have completed. */ if (taskmgrp != NULL) { isc__taskmgr_destroy(taskmgrp); } /* * 4. Finish destruction of the netmgr, and wait until all * references have been released. */ if (netmgrp != NULL) { isc__netmgr_destroy(netmgrp); } } |