mqueue.h

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#ifndef __KERNEL_MQUEUE_H__
#define __KERNEL_MQUEUE_H__
 
#include <mqueue.h>
#include <stddef.h>
#include <unistd.h>
 
struct mqueue_data {
    struct list_head list;
    size_t size;
    char data[0];
};
 
struct mqueue {
    char name[NAME_MAX];
    char *buf;
    size_t size;
    size_t cnt;
    struct list_head free_list;
    struct list_head used_list[MQ_PRIO_MAX + 1];
    struct list_head r_wait_list;
    struct list_head w_wait_list;
    struct list_head list;
};
 
struct mq_desc {
    struct mqueue *mq;
    struct mq_attr attr;
};
 
struct mqueue *__mq_allocate(struct mq_attr *attr);
void __mq_free(struct mqueue *mq);
size_t __mq_len(struct mqueue *mq);
ssize_t __mq_receive(struct mqueue *mq,
                     const struct mq_attr *attr,
                     char *msg_ptr,
                     size_t msg_len,
                     unsigned int *priority);
ssize_t __mq_send(struct mqueue *mq,
                  const struct mq_attr *attr,
                  const char *msg_ptr,
                  size_t msg_len,
                  unsigned int priority);
 
#endif