NPSML: nps/queue.h Source File

00001 #ifndef NPSML_QUEUE_H
00002 #define NPSML_QUEUE_H
00003 
00004 typedef struct queue* nps_queue;
00005 
00006 /* nps_queue_new:  constructor
00007  * nps_queue_free: destructor
00008  */
00009 nps_queue nps_queue_new(void);
00010 void nps_queue_free(nps_queue);
00011 
00012 /* accessors (non-destructive)
00013  *   nps_queue_empty: returns 1 if queue is empty, 0 otherwise
00014  *   nps_queue_peek:  returns element at the front of queue
00015  */
00016 int nps_queue_empty(nps_queue);
00017 void* nps_queue_peek(nps_queue);
00018 
00019 /* manipulators (destructive)
00020  *   nps_queue_enqueue: add element to the back of the queue
00021  *   nps_queue_dequeue: remove element from front of queue and return it
00022  */
00023 void nps_queue_enqueue(void*, nps_queue);
00024 void* nps_queue_dequeue(nps_queue);
00025 
00026 #endif