/*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#ifndef QUEUE_H
#define QUEUE_H 1
+#include <stdbool.h>
+#include <stddef.h>
+
/* Packet queue. */
struct ovs_queue {
int n; /* Number of queued packets. */
struct ofpbuf *tail; /* Last queued packet, null if n == 0. */
};
+#define OVS_QUEUE_INITIALIZER { 0, NULL, NULL }
+
void queue_init(struct ovs_queue *);
void queue_destroy(struct ovs_queue *);
void queue_clear(struct ovs_queue *);
void queue_push_tail(struct ovs_queue *, struct ofpbuf *);
struct ofpbuf *queue_pop_head(struct ovs_queue *);
+static inline bool queue_is_empty(const struct ovs_queue *q)
+{
+ return q->n == 0;
+}
+
#endif /* queue.h */