#ifndef KK_QUEUE_H_
#define KK_QUEUE_H_

#include <stdbool.h>

/*
 * define the default max size
 * even afew will be enough as queue cmds
 * will be consumed right away on most
 * machines but we dont want unexpected
 * beheviour on slow machines
 */
#define Q_MAX_SIZE 128


#define __need_NULL
#include <stddef.h>

#define Q_NULL NULL
#define Q_EMPTY_IDX -1

enum {
  Q_DONE = 0,
  Q_FULL
};

typedef struct {
  int front;
  int rear;
  void *items[Q_MAX_SIZE];
} queue;

extern queue q_new();

extern bool  q_is_empty(queue *q);
extern bool  q_is_full(queue *q);

extern int   q_enqueue(queue *q, void *item);
extern void *q_dequeue(queue *q);

extern void *q_peek(queue *q);

#ifdef KK_DEBUG_
extern void q_print_type_enum(int e);
extern void  q_debug(queue *q);
#endif // KK_DEBUG_

#endif