barrier.nc

tinyos2.0版本驱动

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/**
 * Interface for using Barrier synchronization with tosthreads.
 *
 * @author Kevin Klues <[e-mail]>
 */

#include "barrier.h"

interface Barrier {
  /**
   * Reset a barrier for use.
   * @param b     The barrier you would like to reset.
   * @param count The number of threads that must call
   *              block before the flood gates open and
   *              the barrier is unblocked.
   */
  command void reset(barrier_t* b, uint8_t count);
  /**
   * Block on a barrier until all threads have called 
   * block() as indicated in the count parameter to reset()
   * @param b The barrier you would like to block on.
   */
  command void block(barrier_t* b);
  /**
   * Query whether a barrier is currently blocked or not
   * @param b The barrier you would like to query.
   * @return  TRUE or FALSE
   */
  command bool isBlocking(barrier_t* b);
}