1 /* 2 * Copyright (c) 2000-2020 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_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. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 #ifndef _KERN_TASK_REF_H_ 30 #define _KERN_TASK_REF_H_ 31 32 #include <mach/mach_types.h> 33 34 #include <stdint.h> 35 36 #if MACH_KERNEL_PRIVATE 37 38 39 extern void task_ref_init(void); 40 41 extern void task_ref_count_fini(task_t); 42 extern kern_return_t task_ref_count_init(task_t); 43 44 extern void task_reference_external(task_t task); 45 extern void task_deallocate_external(task_t task); 46 47 #endif /* MACH_KERNEL_PRIVATE */ 48 49 #if XNU_KERNEL_PRIVATE 50 51 #include <os/refcnt.h> 52 53 __BEGIN_DECLS 54 55 extern struct os_refgrp task_external_refgrp; 56 57 __options_closed_decl(task_grp_t, uint32_t, { 58 TASK_GRP_KERNEL, 59 TASK_GRP_INTERNAL, 60 TASK_GRP_MIG, 61 TASK_GRP_EXTERNAL, 62 63 TASK_GRP_COUNT, 64 }); 65 66 extern void task_reference_grp(task_t, task_grp_t); 67 extern void task_deallocate_grp(task_t, task_grp_t); 68 69 #define task_reference_mig(task) task_reference_grp(task, TASK_GRP_MIG) 70 #define task_deallocate_mig(task) task_deallocate_grp(task, TASK_GRP_MIG) 71 72 /* 73 * Exported symbols get mapped to their _external versions. Internal consumers of 74 * these functions need to pick up the _kernel version. 75 */ 76 77 #define task_reference(task) task_reference_grp(task, TASK_GRP_KERNEL) 78 #define task_deallocate(task) task_deallocate_grp(task, TASK_GRP_KERNEL) 79 80 #define convert_task_to_port(task) convert_task_to_port_kernel(task) 81 #define convert_task_read_to_port(task) convert_task_read_to_port_kernel(task) 82 83 #define port_name_to_task(name) port_name_to_task_kernel(name) 84 85 #define convert_port_to_task_suspension_token(port) convert_port_to_task_suspension_token_kernel(port) 86 #define convert_task_suspension_token_to_port(token) convert_task_suspension_token_to_port_kernel(token) 87 88 #define task_resume2(token) task_resume2_kernel(token) 89 #define task_suspend2(task, token) task_suspend2_kernel(task, token) 90 91 __END_DECLS 92 93 #else /* XNU_KERNEL_PRIVATE */ 94 95 __BEGIN_DECLS 96 97 extern void task_reference(task_t); 98 extern void task_deallocate(task_t); 99 100 __END_DECLS 101 #endif /* XNU_KERNEL_PRIVATE */ 102 103 #endif /*_KERN_TASK_REF_H_ */ 104