projects / apple / libpthread.git / blame
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|---|---|---|
| f1a1da6c A |
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 | */ | |
| a0619f9c | 62 | __API_AVAILABLE(macos(10.10), ios(8.0)) |
| f1a1da6c A |
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 | */ | |
| a0619f9c | 85 | __API_AVAILABLE(macos(10.10), ios(8.0)) |
| f1a1da6c A |
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 |