blob: 4123ba1771b399603d6faceb6b8ec299b23319d7 (
plain) (
tree)
|
|
#ifndef LIB_URING_H
#define LIB_URING_H
#include <sys/uio.h>
#include "io_uring.h"
/*
* Library interface to io_uring
*/
struct io_uring_sq {
unsigned *khead;
unsigned *ktail;
unsigned *kring_mask;
unsigned *kring_entries;
unsigned *kflags;
unsigned *kdropped;
unsigned *array;
struct io_uring_sqe *sqes;
unsigned sqe_head;
unsigned sqe_tail;
size_t ring_sz;
};
struct io_uring_cq {
unsigned *khead;
unsigned *ktail;
unsigned *kring_mask;
unsigned *kring_entries;
unsigned *koverflow;
struct io_uring_cqe *cqes;
size_t ring_sz;
};
struct io_uring {
struct io_uring_sq sq;
struct io_uring_cq cq;
int ring_fd;
};
/*
* System calls
*/
extern int io_uring_setup(unsigned entries, struct io_uring_params *p);
extern int io_uring_enter(unsigned fd, unsigned to_submit,
unsigned min_complete, unsigned flags);
extern int io_uring_register(int fd, unsigned int opcode, void *arg);
/*
* Library interface
*/
extern int io_uring_queue_init(unsigned entries, struct io_uring_params *p,
struct io_uring *ring);
extern void io_uring_queue_exit(struct io_uring *ring);
extern int io_uring_get_completion(struct io_uring *ring,
struct io_uring_cqe **cqe_ptr);
extern int io_uring_wait_completion(struct io_uring *ring,
struct io_uring_cqe **cqe_ptr);
extern int io_uring_submit(struct io_uring *ring);
extern struct io_uring_sqe *io_uring_get_sqe(struct io_uring *ring);
#endif
|