/* * Copyright (c) 2014 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef _PTHREAD_SPAWN_H #define _PTHREAD_SPAWN_H /*! * @group posix_spawn QOS class support * Apple extensions to posix_spawn(2) and posix_spawnp(2) */ #include <pthread/pthread.h> #include <spawn.h> __BEGIN_DECLS /*! * @function posix_spawnattr_set_qos_class_np * * @abstract * Sets the QOS class property of a posix_spawn attributes object, which may be * used to specify the QOS class a process should be spawned with. * * @discussion * The QOS class specified at the time of process spawn determines both the * initial requested QOS class of the main thread in the new process, and the * interpretation by the system of all QOS class values requested by threads in * the process. * * @param __attr * The spawn attributes object to modify. * * @param __qos_class * A QOS class value: * - QOS_CLASS_UTILITY * - QOS_CLASS_BACKGROUND * EINVAL will be returned if any other value is provided. * * @return * Zero if successful, otherwise an errno value. */ __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) int posix_spawnattr_set_qos_class_np(posix_spawnattr_t * __restrict __attr, qos_class_t __qos_class); /*! * @function posix_spawnattr_get_qos_class_np * * @abstract * Gets the QOS class property of a posix_spawn attributes object. * * @param __attr * The spawn attributes object to inspect. * * @param __qos_class * On output, a QOS class value: * - QOS_CLASS_UTILITY * - QOS_CLASS_BACKGROUND * - QOS_CLASS_UNSPECIFIED * * @return * Zero if successful, otherwise an errno value. */ __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) int posix_spawnattr_get_qos_class_np(const posix_spawnattr_t *__restrict __attr, qos_class_t * __restrict __qos_class); __END_DECLS #endif // _PTHREAD_SPAWN_H