systemcallqueuep.nc

tinyos2.0版本驱动

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/**
 * @author Kevin Klues <[e-mail]>
 */

module SystemCallQueueP {
  provides {
    interface SystemCallQueue;
  }
  uses {
    interface LinkedList;
    interface Leds;
  }
}
implementation {
  async command void SystemCallQueue.init(syscall_queue_t* q) {
    call LinkedList.init(&(q->l));
  }
  async command void SystemCallQueue.enqueue(syscall_queue_t* q, syscall_t* s) {
    s->next_call = NULL;
    call LinkedList.addLast(&(q->l), (list_element_t*)s);
  }
  async command syscall_t* SystemCallQueue.dequeue(syscall_queue_t* q) {
    return (syscall_t*)call LinkedList.removeFirst(&(q->l));
  }
  async command syscall_t* SystemCallQueue.remove(syscall_queue_t* q, syscall_t* s) {
    return (syscall_t*)call LinkedList.remove(&(q->l), (list_element_t*)s);
  }
  async command syscall_t* SystemCallQueue.find(syscall_queue_t* q, uint8_t id) {
    syscall_t* s;
    for(s = (syscall_t*)(call LinkedList.getFirst(&(q->l)));
        s != NULL;
        s = (syscall_t*)(call LinkedList.getAfter(&(q->l), (list_element_t*)s)) ) {
      if(s->id == id) return s;
    }
    return NULL;
  }
  async command bool SystemCallQueue.isEmpty(syscall_queue_t* q) {
    return (call LinkedList.size(&(q->l)) == 0);
  }
}