//
// Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// iofwd.hfa --
//
// Author           : Thierry Delisle
// Created On       : Thu Apr 23 17:31:00 2020
// Last Modified By :
// Last Modified On :
// Update Count     :
//

#pragma once

#include <unistd.h>
extern "C" {
	#include <sys/types.h>
	#if CFA_HAVE_LINUX_IO_URING_H
		#include <linux/io_uring.h>
	#endif
}
#include "bits/defs.hfa"
#include "time.hfa"

#if defined(CFA_HAVE_IOSQE_FIXED_FILE)
	#define CFA_IO_FIXED_FD1 IOSQE_FIXED_FILE
#endif
#if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
	#define CFA_IO_FIXED_FD2 SPLICE_F_FD_IN_FIXED
#endif
#if defined(CFA_HAVE_IOSQE_IO_DRAIN)
	#define CFA_IO_DRAIN IOSQE_IO_DRAIN
#endif
#if defined(CFA_HAVE_IOSQE_ASYNC)
	#define CFA_IO_ASYNC IOSQE_ASYNC
#endif

struct cluster;
struct io_context;
struct io_cancellation;

struct iovec;
struct msghdr;
struct sockaddr;
struct statx;

extern ssize_t cfa_preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_fsync(int fd, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_sync_file_range(int fd, int64_t offset, int64_t nbytes, unsigned int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_sendmsg(int sockfd, const struct msghdr *msg, int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_recvmsg(int sockfd, struct msghdr *msg, int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_send(int sockfd, const void *buf, size_t len, int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_recv(int sockfd, void *buf, size_t len, int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_fallocate(int fd, int mode, uint64_t offset, uint64_t len, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_fadvise(int fd, uint64_t offset, uint64_t len, int advice, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_madvise(void *addr, size_t length, int advice, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_openat(int dirfd, const char *pathname, int flags, mode_t mode, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_close(int fd, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern int cfa_statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_read(int fd, void *buf, size_t count, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_write(int fd, void *buf, size_t count, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out, size_t len, unsigned int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);
extern ssize_t cfa_tee(int fd_in, int fd_out, size_t len, unsigned int flags, int submit_flags = 0, Duration timeout = -1`s, io_cancellation * cancellation = 0p, io_context * context = 0p);

//-----------------------------------------------------------------------------
// Check if a function is blocks a only the user thread
bool has_user_level_blocking( fptr_t func );

//-----------------------------------------------------------------------------
void register_fixed_files( io_context & ctx , int * files, unsigned count );
void register_fixed_files( cluster    & cltr, int * files, unsigned count );