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Viewing changes to extras/mini-os/include/sys/lock.h

  • Committer: Bazaar Package Importer
  • Author(s): Bastian Blank
  • Date: 2010-05-06 15:47:38 UTC
  • mto: (1.3.1) (15.1.1 sid) (4.1.1 experimental)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20100506154738-agoz0rlafrh1fnq7
Tags: upstream-4.0.0
Import upstream version 4.0.0

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extras/mini-os/include/sys/lock.h
 
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#ifndef _MINIOS_SYS_LOCK_H_
 
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#define _MINIOS_SYS_LOCK_H_
 
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#ifdef HAVE_LIBC
 
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/* Due to inclusion loop, we can not include sched.h, so have to hide things */
 
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#include <mini-os/waittypes.h>
 
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typedef struct {
 
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        int busy;
 
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        struct wait_queue_head wait;
 
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} _LOCK_T;
 
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#define __LOCK_INIT(class,lock) \
 
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    class _LOCK_T lock = { .wait = __WAIT_QUEUE_HEAD_INITIALIZER(lock.wait) }
 
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int ___lock_init(_LOCK_T *lock);
 
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int ___lock_acquire(_LOCK_T *lock);
 
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int ___lock_try_acquire(_LOCK_T *lock);
 
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int ___lock_release(_LOCK_T *lock);
 
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int ___lock_close(_LOCK_T *lock);
 
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#define __lock_init(__lock) ___lock_init(&__lock)
 
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#define __lock_acquire(__lock) ___lock_acquire(&__lock)
 
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#define __lock_release(__lock) ___lock_release(&__lock)
 
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#define __lock_try_acquire(__lock) ___lock_try_acquire(&__lock)
 
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#define __lock_close(__lock) 0
 
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typedef struct {
 
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    struct thread *owner;
 
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    int count;
 
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    struct wait_queue_head wait;
 
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} _LOCK_RECURSIVE_T;
 
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#define __LOCK_INIT_RECURSIVE(class, lock) \
 
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    class _LOCK_RECURSIVE_T lock = { .wait = __WAIT_QUEUE_HEAD_INITIALIZER((lock).wait) }
 
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int ___lock_init_recursive(_LOCK_RECURSIVE_T *lock);
 
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int ___lock_acquire_recursive(_LOCK_RECURSIVE_T *lock);
 
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int ___lock_try_acquire_recursive(_LOCK_RECURSIVE_T *lock);
 
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int ___lock_release_recursive(_LOCK_RECURSIVE_T *lock);
 
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int ___lock_close_recursive(_LOCK_RECURSIVE_T *lock);
 
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#define __lock_init_recursive(__lock) ___lock_init_recursive(&__lock)
 
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#define __lock_acquire_recursive(__lock) ___lock_acquire_recursive(&__lock)
 
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#define __lock_release_recursive(__lock) ___lock_release_recursive(&__lock)
 
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#define __lock_try_acquire_recursive(__lock) ___lock_try_acquire_recursive(&__lock)
 
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#define __lock_close_recursive(__lock) 0
 
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#endif
 
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#endif /* _MINIOS_SYS_LOCK_H_ */