/* Copyright (C) 2010, 2011 Tony Garnock-Jones. All rights reserved. */

#ifndef cmsg_dataq_h
#define cmsg_dataq_h

typedef struct queue_t_ {
  size_t link_offset;
  int count;
  void *head;
  void *tail;
} queue_t;

#define EMPTY_QUEUE(element_t, link_field_name) \
  ((queue_t) { offsetof(element_t, link_field_name), 0, NULL, NULL })

extern void enqueue(queue_t *q, void *x);
extern void *dequeue(queue_t *q);

extern void queue_append(queue_t *q1, queue_t *q2);

#endif