d6d439f3f7
* Fixes sharing semantics, so non-shared semaphores in non-shared memory do not become shared after a fork. * Adds two new system calls: _user_mutex_sem_acquire/release(), which reuse the user_mutex address-hashed wait mechanism. * Named semaphores continue to use traditional sem_id semaphores.
33 lines
755 B
C
33 lines
755 B
C
/*
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* Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _KERNEL_USER_MUTEX_H
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#define _KERNEL_USER_MUTEX_H
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#include <SupportDefs.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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void user_mutex_init();
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status_t _user_mutex_lock(int32* mutex, const char* name, uint32 flags,
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bigtime_t timeout);
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status_t _user_mutex_unlock(int32* mutex, uint32 flags);
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status_t _user_mutex_switch_lock(int32* fromMutex, int32* toMutex,
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const char* name, uint32 flags, bigtime_t timeout);
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status_t _user_mutex_sem_acquire(int32* sem, const char* name, uint32 flags,
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bigtime_t timeout);
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status_t _user_mutex_sem_release(int32* sem);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL_USER_MUTEX_H */
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