X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..0a7de7458d150b5d4dffc935ba399be265ef0a1a:/osfmk/kern/sync_lock.h diff --git a/osfmk/kern/sync_lock.h b/osfmk/kern/sync_lock.h index 99f2d098c..bcbe466dd 100644 --- a/osfmk/kern/sync_lock.h +++ b/osfmk/kern/sync_lock.h @@ -1,27 +1,33 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. - * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * @APPLE_OSREFERENCE_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. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * 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 OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * 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_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ - * + * */ /* * File: kern/sync_lock.h @@ -35,114 +41,15 @@ #include -#include +#ifdef MACH_KERNEL_PRIVATE -#ifdef __APPLE_API_PRIVATE - -#ifdef MACH_KERNEL_PRIVATE - -#include #include #include -#include - -typedef struct ulock { - queue_chain_t thread_link; /* ulocks owned by a thread */ - queue_chain_t held_link; /* ulocks held in the lock set */ - queue_chain_t handoff_link; /* ulocks w/ active handoffs */ - - decl_mutex_data(,lock) /* ulock lock */ - - struct lock_set *lock_set; /* the retaining lock set */ - thread_act_t holder; /* thread_act that holds the lock */ - unsigned int /* flags */ - /* boolean_t */ blocked:1, /* did threads block waiting? */ - /* boolean_t */ unstable:1, /* unstable? (holder died) */ - /* boolean_t */ ho_wait:1, /* handoff thread waiting? */ - /* boolean_t */ accept_wait:1, /* accepting thread waiting? */ - :0; /* force to long boundary */ - - struct wait_queue wait_queue; /* queue of blocked threads */ -} Ulock; - -typedef struct ulock *ulock_t; - -typedef struct lock_set { - queue_chain_t task_link; /* chain of lock sets owned by a task */ - decl_mutex_data(,lock) /* lock set lock */ - task_t owner; /* task that owns the lock set */ - ipc_port_t port; /* lock set port */ - int ref_count; /* reference count */ - - boolean_t active; /* active status */ - int n_ulocks; /* number of ulocks in the lock set */ - - struct ulock ulock_list[1]; /* ulock group list place holder */ -} Lock_Set; - -#define ULOCK_NULL ((ulock_t) 0) - -#define ULOCK_FREE 0 -#define ULOCK_HELD 1 - -/* - * Data structure internal lock macros - */ - -#define lock_set_lock_init(ls) mutex_init(&(ls)->lock, \ - ETAP_THREAD_LOCK_SET) -#define lock_set_lock(ls) mutex_lock(&(ls)->lock) -#define lock_set_unlock(ls) mutex_unlock(&(ls)->lock) - -#define ulock_lock_init(ul) mutex_init(&(ul)->lock, \ - ETAP_THREAD_ULOCK) -#define ulock_lock(ul) mutex_lock(&(ul)->lock) -#define ulock_unlock(ul) mutex_unlock(&(ul)->lock) - -extern void lock_set_init(void); - -extern kern_return_t lock_release_internal (ulock_t ulock, - thread_act_t thr_act); - -#endif /* MACH_KERNEL_PRIVATE */ - -#endif /* __APPLE_API_PRIVATE */ - - -/* - * Forward Declarations - */ - -extern kern_return_t lock_set_create (task_t task, - lock_set_t *new_lock_set, - int n_ulocks, - int policy); - -extern kern_return_t lock_set_destroy (task_t task, - lock_set_t lock_set); - -extern kern_return_t lock_acquire (lock_set_t lock_set, - int lock_id); - -extern kern_return_t lock_release (lock_set_t lock_set, - int lock_id); - -extern kern_return_t lock_try (lock_set_t lock_set, - int lock_id); - -extern kern_return_t lock_make_stable (lock_set_t lock_set, - int lock_id); - -extern kern_return_t lock_make_unstable (ulock_t ulock, - thread_act_t thr_act); - -extern kern_return_t lock_handoff (lock_set_t lock_set, - int lock_id); +#include -extern kern_return_t lock_handoff_accept (lock_set_t lock_set, - int lock_id); +extern void lock_set_reference(lock_set_t lock_set); +extern void lock_set_dereference(lock_set_t lock_set); -extern void lock_set_reference (lock_set_t lock_set); -extern void lock_set_dereference (lock_set_t lock_set); +#endif /* MACH_KERNEL_PRIVATE */ #endif /* _KERN_SYNC_LOCK_H_ */