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#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_iocb *iocbs;
unsigned iocb_head;
unsigned iocb_tail;
size_t ring_sz;
};
struct io_uring_cq {
unsigned *khead;
unsigned *ktail;
unsigned *kring_mask;
unsigned *kring_entries;
unsigned *koverflow;
struct io_uring_event *events;
size_t ring_sz;
};
/*
* System calls
*/
extern int io_uring_setup(unsigned entries, struct iovec *iovecs,
struct io_uring_params *p);
extern int io_uring_enter(unsigned fd, unsigned to_submit,
unsigned min_complete, unsigned flags);
/*
* Library interface
*/
extern int io_uring_queue_init(unsigned entries, struct io_uring_params *p,
struct iovec *iovecs, struct io_uring_sq *sq, struct io_uring_cq *cq);
extern void io_uring_queue_exit(int fd, struct io_uring_sq *sq,
struct io_uring_cq *cq);
extern int io_uring_get_completion(int fd, struct io_uring_cq *cq,
struct io_uring_event **ev_ptr);
extern int io_uring_submit(int fd, struct io_uring_sq *sq);
extern struct io_uring_iocb *io_uring_get_iocb(struct io_uring_sq *sq);
#endif
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