minix/common/include/ddekit/semaphore.h

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2011-02-25 13:31:20 +01:00
#ifndef _DDEKIT_SEMAPHORE_H
#define _DDEKIT_SEMAPHORE_H
#include <ddekit/ddekit.h>
/** \defgroup DDEKit_synchronization */
struct ddekit_sem;
typedef struct ddekit_sem ddekit_sem_t;
/** Initialize DDEKit semaphore.
*
* \ingroup DDEKit_synchronization
*
* \param value initial semaphore counter
*/
_PROTOTYPE( ddekit_sem_t *ddekit_sem_init, (int value));
/** Uninitialize semaphore.
*
* \ingroup DDEKit_synchronization
*/
_PROTOTYPE( void ddekit_sem_deinit, (ddekit_sem_t *sem));
/** Semaphore down method. */
_PROTOTYPE( void ddekit_sem_down, (ddekit_sem_t *sem));
/** Semaphore down method, non-blocking.
*
* \ingroup DDEKit_synchronization
*
* \return 0 success
* \return !=0 would block
*/
_PROTOTYPE( int ddekit_sem_down_try, (ddekit_sem_t *sem));
/** Semaphore down with timeout.
*
* \ingroup DDEKit_synchronization
*
* \return 0 success
* \return !=0 would block
*/
_PROTOTYPE( int ddekit_sem_down_timed, (ddekit_sem_t *sem, int timo));
/** Semaphore up method.
*
* \ingroup DDEKit_synchronization
*/
_PROTOTYPE( void ddekit_sem_up, (ddekit_sem_t *sem));
#endif