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- /*
- * Copyright (c) 2000 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
- * 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@
- */
-
- #ifndef _MACH_SEMAPHORE_H_
- #define _MACH_SEMAPHORE_H_
-
- #include <mach/port.h>
- #include <mach/mach_types.h>
- #include <mach/kern_return.h>
- #include <mach/sync_policy.h>
-
- #define SEMAPHORE_OPTION_NONE 0x00000000
-
- #define SEMAPHORE_SIGNAL 0x00000001
- #define SEMAPHORE_WAIT 0x00000002
- #define SEMAPHORE_WAIT_ON_SIGNAL 0x00000008
-
- #define SEMAPHORE_SIGNAL_TIMEOUT 0x00000010
- #define SEMAPHORE_SIGNAL_ALL 0x00000020
- #define SEMAPHORE_SIGNAL_INTERRUPT 0x00000040 /* libmach implements */
- #define SEMAPHORE_SIGNAL_PREPOST 0x00000080
-
- #define SEMAPHORE_WAIT_TIMEOUT 0x00000100
- #define SEMAPHORE_WAIT_INTERRUPT 0x00000400 /* libmach implements */
-
- #define SEMAPHORE_TIMEOUT_NOBLOCK 0x00100000
- #define SEMAPHORE_TIMEOUT_RELATIVE 0x00200000
-
- #define SEMAPHORE_USE_SAVED_RESULT 0x01000000 /* internal use only */
- #define SEMAPHORE_SIGNAL_RELEASE 0x02000000 /* internal use only */
-
-
- /*
- * Forward Declarations
- *
- * The semaphore creation and deallocation routines are
- * defined with the Mach task APIs in <mach/task.h>.
- *
- * kern_return_t semaphore_create(task_t task,
- * semaphore_t *new_semaphore,
- * sync_policy_t policy,
- * int value);
- *
- * kern_return_t semaphore_destroy(task_t task,
- * semaphore_t semaphore);
- */
-
- extern kern_return_t semaphore_signal (semaphore_t semaphore);
- extern kern_return_t semaphore_signal_all (semaphore_t semaphore);
- extern kern_return_t semaphore_signal_thread (semaphore_t semaphore,
- thread_act_t thread_act);
-
- extern kern_return_t semaphore_wait (semaphore_t semaphore);
- extern kern_return_t semaphore_timedwait (semaphore_t semaphore,
- mach_timespec_t wait_time);
-
- extern kern_return_t semaphore_wait_signal (semaphore_t wait_semaphore,
- semaphore_t signal_semaphore);
-
- extern kern_return_t semaphore_timedwait_signal(semaphore_t wait_semaphore,
- semaphore_t signal_semaphore,
- mach_timespec_t wait_time);
-
- extern kern_return_t semaphore_operator (int options,
- semaphore_t wait_semaphore,
- semaphore_t signal_semaphore,
- thread_act_t thread,
- mach_timespec_t wait_time);
-
- #endif /* _MACH_SEMAPHORE_H_ */
-