source: libcfa/src/concurrency/iofwd.hfa @ 93829cb

ADTast-experimentalenumpthread-emulationqualifiedEnum
Last change on this file since 93829cb was 93829cb, checked in by Thierry Delisle <tdelisle@…>, 2 years ago

Added helper function to zero out sqes.
Not done in allocate since so it can be inlined and redudant writes eliminated.
  • Property mode set to 100644
File size: 7.1 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// iofwd.hfa --
8//
9// Author           : Thierry Delisle
10// Created On       : Thu Apr 23 17:31:00 2020
11// Last Modified By :
12// Last Modified On :
13// Update Count     :
14//
15
16#pragma once
17
18#include <unistd.h>
19extern "C" {
20        #include <asm/types.h>
21        #include <sys/stat.h> // needed for mode_t
22        #if CFA_HAVE_LINUX_IO_URING_H
23                #include <linux/io_uring.h>
24        #endif
25}
26#include "bits/defs.hfa"
27#include "time.hfa"
28
29#if defined(CFA_HAVE_IOSQE_FIXED_FILE)
30        #define CFA_IO_FIXED_FD1 IOSQE_FIXED_FILE
31#endif
32#if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
33        #define CFA_IO_FIXED_FD2 SPLICE_F_FD_IN_FIXED
34#endif
35#if defined(CFA_HAVE_IOSQE_IO_DRAIN)
36        #define CFA_IO_DRAIN IOSQE_IO_DRAIN
37#endif
38#if defined(CFA_HAVE_IOSQE_ASYNC)
39        #define CFA_IO_ASYNC IOSQE_ASYNC
40#endif
41
42#if __OFF_T_MATCHES_OFF64_T
43        typedef __off64_t off_t;
44#else
45        typedef __off_t off_t;
46#endif
47typedef __off64_t off64_t;
48
49struct cluster;
50struct io_future_t;
51struct $io_context;
52
53struct iovec;
54struct msghdr;
55struct sockaddr;
56struct statx;
57struct epoll_event;
58
59struct io_uring_sqe;
60
61//----------
62// underlying calls
63extern struct $io_context * cfa_io_allocate(struct io_uring_sqe * out_sqes[], __u32 out_idxs[], __u32 want)  __attribute__((nonnull (1,2)));
64extern void cfa_io_submit( struct $io_context * in_ctx, __u32 in_idxs[], __u32 have, bool lazy ) __attribute__((nonnull (1,2)));
65
66//----------
67// synchronous calls
68#if defined(CFA_HAVE_PREADV2)
69        extern ssize_t cfa_preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
70#endif
71#if defined(CFA_HAVE_PWRITEV2)
72        extern ssize_t cfa_pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
73#endif
74extern int cfa_fsync(int fd, __u64 submit_flags);
75extern int cfa_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event, __u64 submit_flags);
76extern int cfa_sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags, __u64 submit_flags);
77extern  ssize_t cfa_sendmsg(int sockfd, const struct msghdr *msg, int flags, __u64 submit_flags);
78extern ssize_t cfa_recvmsg(int sockfd, struct msghdr *msg, int flags, __u64 submit_flags);
79extern ssize_t cfa_send(int sockfd, const void *buf, size_t len, int flags, __u64 submit_flags);
80extern ssize_t cfa_recv(int sockfd, void *buf, size_t len, int flags, __u64 submit_flags);
81extern int cfa_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags, __u64 submit_flags);
82extern int cfa_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen, __u64 submit_flags);
83extern int cfa_fallocate(int fd, int mode, off_t offset, off_t len, __u64 submit_flags);
84extern int cfa_posix_fadvise(int fd, off_t offset, off_t len, int advice, __u64 submit_flags);
85extern int cfa_madvise(void *addr, size_t length, int advice, __u64 submit_flags);
86extern int cfa_openat(int dirfd, const char *pathname, int flags, mode_t mode, __u64 submit_flags);
87#if defined(CFA_HAVE_OPENAT2)
88        extern int cfa_openat2(int dirfd, const char *pathname, struct open_how * how, size_t size, __u64 submit_flags);
89#endif
90extern int cfa_close(int fd, __u64 submit_flags);
91#if defined(CFA_HAVE_STATX)
92        extern int cfa_statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf, __u64 submit_flags);
93#endif
94extern ssize_t cfa_read(int fd, void * buf, size_t count, __u64 submit_flags);
95extern ssize_t cfa_write(int fd, void * buf, size_t count, __u64 submit_flags);
96extern ssize_t cfa_splice(int fd_in, __off64_t *off_in, int fd_out, __off64_t *off_out, size_t len, unsigned int flags, __u64 submit_flags);
97extern ssize_t cfa_tee(int fd_in, int fd_out, size_t len, unsigned int flags, __u64 submit_flags);
98
99//----------
100// asynchronous calls
101#if defined(CFA_HAVE_PREADV2)
102        extern void async_preadv2(io_future_t & future, int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
103#endif
104#if defined(CFA_HAVE_PWRITEV2)
105        extern void async_pwritev2(io_future_t & future, int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
106#endif
107extern void async_fsync(io_future_t & future, int fd, __u64 submit_flags);
108extern void async_epoll_ctl(io_future_t & future, int epfd, int op, int fd, struct epoll_event *event, __u64 submit_flags);
109extern void async_sync_file_range(io_future_t & future, int fd, off64_t offset, off64_t nbytes, unsigned int flags, __u64 submit_flags);
110extern void async_sendmsg(io_future_t & future, int sockfd, const struct msghdr *msg, int flags, __u64 submit_flags);
111extern void async_recvmsg(io_future_t & future, int sockfd, struct msghdr *msg, int flags, __u64 submit_flags);
112extern void async_send(io_future_t & future, int sockfd, const void *buf, size_t len, int flags, __u64 submit_flags);
113extern void async_recv(io_future_t & future, int sockfd, void *buf, size_t len, int flags, __u64 submit_flags);
114extern void async_accept4(io_future_t & future, int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags, __u64 submit_flags);
115extern void async_connect(io_future_t & future, int sockfd, const struct sockaddr *addr, socklen_t addrlen, __u64 submit_flags);
116extern void async_fallocate(io_future_t & future, int fd, int mode, off_t offset, off_t len, __u64 submit_flags);
117extern void async_posix_fadvise(io_future_t & future, int fd, off_t offset, off_t len, int advice, __u64 submit_flags);
118extern void async_madvise(io_future_t & future, void *addr, size_t length, int advice, __u64 submit_flags);
119extern void async_openat(io_future_t & future, int dirfd, const char *pathname, int flags, mode_t mode, __u64 submit_flags);
120#if defined(CFA_HAVE_OPENAT2)
121        extern void async_openat2(io_future_t & future, int dirfd, const char *pathname, struct open_how * how, size_t size, __u64 submit_flags);
122#endif
123extern void async_close(io_future_t & future, int fd, __u64 submit_flags);
124#if defined(CFA_HAVE_STATX)
125        extern void async_statx(io_future_t & future, int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf, __u64 submit_flags);
126#endif
127void async_read(io_future_t & future, int fd, void * buf, size_t count, __u64 submit_flags);
128extern void async_write(io_future_t & future, int fd, void * buf, size_t count, __u64 submit_flags);
129extern void async_splice(io_future_t & future, int fd_in, __off64_t *off_in, int fd_out, __off64_t *off_out, size_t len, unsigned int flags, __u64 submit_flags);
130extern void async_tee(io_future_t & future, int fd_in, int fd_out, size_t len, unsigned int flags, __u64 submit_flags);
131
132
133//-----------------------------------------------------------------------------
134// Check if a function is blocks a only the user thread
135bool has_user_level_blocking( fptr_t func );
136
137#if CFA_HAVE_LINUX_IO_URING_H
138        static inline void zero_sqe(struct io_uring_sqe * sqe) {
139                sqe->flags = 0;
140                sqe->ioprio = 0;
141                sqe->fd = 0;
142                sqe->off = 0;
143                sqe->addr = 0;
144                sqe->len = 0;
145                sqe->fsync_flags = 0;
146                sqe->__pad2[0] = 0;
147                sqe->__pad2[1] = 0;
148                sqe->__pad2[2] = 0;
149                sqe->fd = 0;
150                sqe->off = 0;
151                sqe->addr = 0;
152                sqe->len = 0;
153        }
154#endif
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