#include "libnazgul.h"

int msgQueueDelete(msgQueueId externId,int queueIdx){
  msgQueue * queue;
  msgQueueId queueId;  
  msgQueueSemId queueProtLockSemId;
  msgQueueSemId queueReadLockSemId;
  
  msgQueueIdIntern(queueId,externId,queueIdx);
  queue = msgQueueOpen(queueId);

  if (strcmp(queue->headId,queue->id)!=0){
	// liste non-vide
	if (msgQueueElemDelete(queue->headId) <0){
	  NZG_ERROR("msgQueueElemDelete",queue->headId);
	  goto ERROR;
	}
  }
 
  msgQueueProtSemIdIntern(queueProtLockSemId,externId,queueIdx);
  msgQueueReadSemIdIntern(queueReadLockSemId,externId,queueIdx);
  sem_unlink(queueProtLockSemId);
  sem_unlink(queueReadLockSemId);

  if (shm_unlink(queueId) < 0){
	NZG_ERROR("shm_unlink msgQueueElem",queueId);
	goto ERROR;	
  }

  return 0;
ERROR:
  return -1;
}