| | 1 | /* |
| | 2 | * Copyright (c) 2014 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. Please obtain a copy of the License at |
| | 10 | * http://www.opensource.apple.com/apsl/ and read it before using this |
| | 11 | * file. |
| | 12 | * |
| | 13 | * The Original Code and all software distributed under the License are |
| | 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 18 | * Please see the License for the specific language governing rights and |
| | 19 | * limitations under the License. |
| | 20 | * |
| | 21 | * @APPLE_LICENSE_HEADER_END@ |
| | 22 | */ |
| | 23 | |
| | 24 | #ifndef _PTHREAD_SPAWN_H |
| | 25 | #define _PTHREAD_SPAWN_H |
| | 26 | |
| | 27 | /*! |
| | 28 | * @group posix_spawn QOS class support |
| | 29 | * Apple extensions to posix_spawn(2) and posix_spawnp(2) |
| | 30 | */ |
| | 31 | |
| | 32 | #include <pthread/pthread.h> |
| | 33 | #include <spawn.h> |
| | 34 | |
| | 35 | __BEGIN_DECLS |
| | 36 | |
| | 37 | /*! |
| | 38 | * @function posix_spawnattr_set_qos_class_np |
| | 39 | * |
| | 40 | * @abstract |
| | 41 | * Sets the QOS class property of a posix_spawn attributes object, which may be |
| | 42 | * used to specify the QOS class a process should be spawned with. |
| | 43 | * |
| | 44 | * @discussion |
| | 45 | * The QOS class specified at the time of process spawn determines both the |
| | 46 | * initial requested QOS class of the main thread in the new process, and the |
| | 47 | * interpretation by the system of all QOS class values requested by threads in |
| | 48 | * the process. |
| | 49 | * |
| | 50 | * @param __attr |
| | 51 | * The spawn attributes object to modify. |
| | 52 | * |
| | 53 | * @param __qos_class |
| | 54 | * A QOS class value: |
| | 55 | * - QOS_CLASS_UTILITY |
| | 56 | * - QOS_CLASS_BACKGROUND |
| | 57 | * EINVAL will be returned if any other value is provided. |
| | 58 | * |
| | 59 | * @return |
| | 60 | * Zero if successful, otherwise an errno value. |
| | 61 | */ |
| | 62 | __API_AVAILABLE(macos(10.10), ios(8.0)) |
| | 63 | int |
| | 64 | posix_spawnattr_set_qos_class_np(posix_spawnattr_t * __restrict __attr, |
| | 65 | qos_class_t __qos_class); |
| | 66 | |
| | 67 | /*! |
| | 68 | * @function posix_spawnattr_get_qos_class_np |
| | 69 | * |
| | 70 | * @abstract |
| | 71 | * Gets the QOS class property of a posix_spawn attributes object. |
| | 72 | * |
| | 73 | * @param __attr |
| | 74 | * The spawn attributes object to inspect. |
| | 75 | * |
| | 76 | * @param __qos_class |
| | 77 | * On output, a QOS class value: |
| | 78 | * - QOS_CLASS_UTILITY |
| | 79 | * - QOS_CLASS_BACKGROUND |
| | 80 | * - QOS_CLASS_UNSPECIFIED |
| | 81 | * |
| | 82 | * @return |
| | 83 | * Zero if successful, otherwise an errno value. |
| | 84 | */ |
| | 85 | __API_AVAILABLE(macos(10.10), ios(8.0)) |
| | 86 | int |
| | 87 | posix_spawnattr_get_qos_class_np(const posix_spawnattr_t *__restrict __attr, |
| | 88 | qos_class_t * __restrict __qos_class); |
| | 89 | |
| | 90 | __END_DECLS |
| | 91 | |
| | 92 | #endif // _PTHREAD_SPAWN_H |
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