queue.c

#include <aura/aura.h>

void aura_queue_buffer(struct list_head *queue, struct aura_buffer *buf)
{
        list_add_tail(&buf->qentry, queue);
        aura_buffer_rewind(buf);
}


struct aura_buffer *aura_peek_buffer(struct list_head *head)
{
        struct aura_buffer *ret;

        if (list_empty(head))
                return NULL;
        ret = list_entry(head->next, struct aura_buffer, qentry);
        return ret;
}

struct aura_buffer *aura_dequeue_buffer(struct list_head *head)
{
        struct aura_buffer *ret;
        ret = aura_peek_buffer(head);
        if (ret) {
                list_del(head->next);
                aura_buffer_rewind(ret);
        }
        return ret;
}

void aura_requeue_buffer(struct list_head *list, struct aura_buffer *buf)
{
        list_add(&buf->qentry, list);
}