conditionvariablec.nc

tinyos2.0版本驱动

/*
 * Copyright (c) 2008 Stanford University.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the
 *   distribution.
 * - Neither the name of the Stanford University nor the names of
 *   its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL STANFORD
 * UNIVERSITY OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/**
 * This is the barrier implementation.  Every barrier has a pointer to 
 * a linked list of threads.  When a thread calls block() on a barrier 
 * it is pushed onto the thread queue associated with that barrier and
 * it is blocked.  Once some thread calls unblock() on a particular 
 * barrier, all threads on that barrier's thread queue are popped off 
 * and woken up. 
 *
 * @author Kevin Klues <[e-mail]>
 */
 
#include "thread.h"
#include "condvar.h"

configuration ConditionVariableC {
  provides {
    interface ConditionVariable;
  }
}
implementation {
  components TinyThreadSchedulerC;
  components ThreadQueueC;
  components MutexC;
  components ConditionVariableP;
  
  ConditionVariable = ConditionVariableP;
  ConditionVariableP.ThreadScheduler -> TinyThreadSchedulerC;
  ConditionVariableP.ThreadQueue -> ThreadQueueC;
  ConditionVariableP.Mutex -> MutexC;
  
  components LedsC;
  ConditionVariableP.Leds -> LedsC;
}