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Ignore whitespace Rev 383 → Rev 384

/SPARTAN/trunk/src/synch/semaphore.c
26,13 → 26,20
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <synch/synch.h>
#include <synch/semaphore.h>
#include <synch/waitq.h>
#include <synch/spinlock.h>
#include <synch/synch.h>
#include <arch/asm.h>
#include <arch.h>
/** Initialize semaphore
*
* Initialize semaphore.
*
* @param s Semaphore.
* @param val Maximal number of threads allowed to enter critical section.
*/
void semaphore_initialize(semaphore_t *s, int val)
{
pri_t pri;
48,11 → 55,31
cpu_priority_restore(pri);
}
/** Semaphore down
*
* Semaphore down.
* Conditional mode and mode with timeout can be requested.
*
* @param s Semaphore.
* @param usec Timeout in microseconds.
* @param trydown Switches between blocking and non-blocking mode.
*
* For exact description of possible combinations of
* 'usec' and 'trydown', see comment for waitq_sleep_timeout().
*
* @return See comment for waitq_sleep_timeout().
*/
int _semaphore_down_timeout(semaphore_t *s, __u32 usec, int trydown)
{
return waitq_sleep_timeout(&s->wq, usec, trydown);
}
/** Semaphore up
*
* Semaphore up.
*
* @param s Semaphore.
*/
void semaphore_up(semaphore_t *s)
{
waitq_wakeup(&s->wq, WAKEUP_FIRST);