64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
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/*
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* Copyright (c) 2023
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _MACPORTS_LOCK_H_
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#define _MACPORTS_LOCK_H_
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/* MP support header */
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#include "MacportsLegacySupport.h"
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#if __MP_LEGACY_SUPPORT_OS_UNFAIR_LOCK__
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/*
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os/lock.h does not exist
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use deprecated OSSpinLock instead
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see https://developer.apple.com/documentation/os/os_unfair_lock
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*/
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#include <libkern/OSAtomic.h>
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#define OS_UNFAIR_LOCK_INIT OS_SPINLOCK_INIT
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typedef OSSpinLock os_unfair_lock;
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typedef OSSpinLock *os_unfair_lock_t;
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__MP__BEGIN_DECLS
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void os_unfair_lock_lock(os_unfair_lock_t lock);
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bool os_unfair_lock_trylock(os_unfair_lock_t lock);
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void os_unfair_lock_unlock(os_unfair_lock_t lock);
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__MP__END_DECLS
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/*
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it is not clear how to implement these functions
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void os_unfair_lock_assert_owner(const os_unfair_lock *lock);
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void os_unfair_lock_assert_not_owner(const os_unfair_lock *lock);
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*/
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#else /*__MP_LEGACY_SUPPORT_OS_UNFAIR_LOCK__*/
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/* Include the primary system os/lock.h */
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#include_next <os/lock.h>
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#endif /*__MP_LEGACY_SUPPORT_OS_UNFAIR_LOCK__*/
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#endif
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