source: libcfa/src/concurrency/iofwd.hfa

Last change on this file was f898983, checked in by Peter A. Buhr <pabuhr@…>, 9 months ago

add missing #include <string.h>
  • Property mode set to 100644
File size: 7.6 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 : Peter A. Buhr
12// Last Modified On : Fri Jul 21 21:36:01 2023
13// Update Count     : 3
14//
15
16#pragma once
17
18#include <unistd.h>
19#include <sys/socket.h>
20#include <string.h>                                                                             // memset
21
22extern "C" {
23        #include <asm/types.h>
24        #include <sys/stat.h> // needed for mode_t
25        #if CFA_HAVE_LINUX_IO_URING_H
26                #include <linux/io_uring.h>
27        #endif
28}
29#include "bits/defs.hfa"
30#include "kernel/fwd.hfa"
31#include "time.hfa"
32
33#if defined(CFA_HAVE_IOSQE_FIXED_FILE)
34        #define CFA_IO_FIXED_FD1 IOSQE_FIXED_FILE
35#endif
36#if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
37        #define CFA_IO_FIXED_FD2 SPLICE_F_FD_IN_FIXED
38#endif
39#if defined(CFA_HAVE_IOSQE_IO_DRAIN)
40        #define CFA_IO_DRAIN IOSQE_IO_DRAIN
41#endif
42#if defined(CFA_HAVE_IOSQE_ASYNC)
43        #define CFA_IO_ASYNC IOSQE_ASYNC
44#endif
45
46#if __OFF_T_MATCHES_OFF64_T
47        typedef __off64_t off_t;
48#else
49        typedef __off_t off_t;
50#endif
51typedef __off64_t off64_t;
52
53struct epoll_event;
54
55//-----------------------------------------------------------------------
56// IO user data
57struct io_future_t {
58        future_t self;
59        __s32 result;
60};
61
62static inline {
63        thread$ * fulfil( io_future_t & this, __s32 result, bool do_unpark = true ) {
64                this.result = result;
65                return fulfil(this.self, do_unpark);
66        }
67
68        // Wait for the future to be fulfilled
69        bool wait     ( io_future_t & this ) { return wait     (this.self); }
70        void reset    ( io_future_t & this ) { return reset    (this.self); }
71        bool available( io_future_t & this ) { return available(this.self); }
72        bool setup    ( io_future_t & this, oneshot & ctx ) { return setup  (this.self, ctx); }
73        bool retract  ( io_future_t & this, oneshot & ctx ) { return retract(this.self, ctx); }
74}
75
76//----------
77// underlying calls
78extern struct io_context$ * cfa_io_allocate(struct io_uring_sqe * out_sqes[], __u32 out_idxs[], __u32 want)  __attribute__((nonnull (1,2)));
79extern void cfa_io_submit( struct io_context$ * in_ctx, __u32 in_idxs[], __u32 have, bool lazy ) __attribute__((nonnull (1,2)));
80
81//----------
82// synchronous calls
83#if defined(CFA_HAVE_PREADV2)
84        extern ssize_t cfa_preadv2(int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
85#endif
86#if defined(CFA_HAVE_PWRITEV2)
87        extern ssize_t cfa_pwritev2(int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
88#endif
89extern int cfa_fsync(int fd, __u64 submit_flags);
90extern int cfa_epoll_ctl(int epfd, int op, int fd, struct epoll_event * event, __u64 submit_flags);
91extern int cfa_sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags, __u64 submit_flags);
92extern  ssize_t cfa_sendmsg(int sockfd, const struct msghdr * msg, int flags, __u64 submit_flags);
93extern ssize_t cfa_recvmsg(int sockfd, struct msghdr * msg, int flags, __u64 submit_flags);
94extern ssize_t cfa_send(int sockfd, const void * buf, size_t len, int flags, __u64 submit_flags);
95extern ssize_t cfa_recv(int sockfd, void * buf, size_t len, int flags, __u64 submit_flags);
96extern int cfa_accept4(int sockfd, __SOCKADDR_ARG addr, socklen_t * restrict addrlen, int flags, __u64 submit_flags);
97extern int cfa_connect(int sockfd, __CONST_SOCKADDR_ARG addr, socklen_t addrlen, __u64 submit_flags);
98extern int cfa_fallocate(int fd, int mode, off_t offset, off_t len, __u64 submit_flags);
99extern int cfa_posix_fadvise(int fd, off_t offset, off_t len, int advice, __u64 submit_flags);
100extern int cfa_madvise(void * addr, size_t length, int advice, __u64 submit_flags);
101extern int cfa_openat(int dirfd, const char * pathname, int flags, mode_t mode, __u64 submit_flags);
102#if defined(CFA_HAVE_OPENAT2)
103        extern int cfa_openat2(int dirfd, const char * pathname, struct open_how * how, size_t size, __u64 submit_flags);
104#endif
105extern int cfa_close(int fd, __u64 submit_flags);
106#if defined(CFA_HAVE_STATX)
107        extern int cfa_statx(int dirfd, const char * pathname, int flags, unsigned int mask, struct statx * statxbuf, __u64 submit_flags);
108#endif
109extern ssize_t cfa_read(int fd, void * buf, size_t count, __u64 submit_flags);
110extern ssize_t cfa_write(int fd, void * buf, size_t count, __u64 submit_flags);
111extern 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);
112extern ssize_t cfa_tee(int fd_in, int fd_out, size_t len, unsigned int flags, __u64 submit_flags);
113
114//----------
115// asynchronous calls
116#if defined(CFA_HAVE_PREADV2)
117        extern void async_preadv2(io_future_t & future, int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
118#endif
119#if defined(CFA_HAVE_PWRITEV2)
120        extern void async_pwritev2(io_future_t & future, int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags, __u64 submit_flags);
121#endif
122extern void async_fsync(io_future_t & future, int fd, __u64 submit_flags);
123extern void async_epoll_ctl(io_future_t & future, int epfd, int op, int fd, struct epoll_event * event, __u64 submit_flags);
124extern void async_sync_file_range(io_future_t & future, int fd, off64_t offset, off64_t nbytes, unsigned int flags, __u64 submit_flags);
125extern void async_sendmsg(io_future_t & future, int sockfd, const struct msghdr * msg, int flags, __u64 submit_flags);
126extern void async_recvmsg(io_future_t & future, int sockfd, struct msghdr * msg, int flags, __u64 submit_flags);
127extern void async_send(io_future_t & future, int sockfd, const void * buf, size_t len, int flags, __u64 submit_flags);
128extern void async_recv(io_future_t & future, int sockfd, void * buf, size_t len, int flags, __u64 submit_flags);
129extern void async_accept4(io_future_t & future, int sockfd, __SOCKADDR_ARG addr, socklen_t * restrict addrlen, int flags, __u64 submit_flags);
130extern void async_connect(io_future_t & future, int sockfd, __CONST_SOCKADDR_ARG addr, socklen_t addrlen, __u64 submit_flags);
131extern void async_fallocate(io_future_t & future, int fd, int mode, off_t offset, off_t len, __u64 submit_flags);
132extern void async_posix_fadvise(io_future_t & future, int fd, off_t offset, off_t len, int advice, __u64 submit_flags);
133extern void async_madvise(io_future_t & future, void * addr, size_t length, int advice, __u64 submit_flags);
134extern void async_openat(io_future_t & future, int dirfd, const char * pathname, int flags, mode_t mode, __u64 submit_flags);
135#if defined(CFA_HAVE_OPENAT2)
136        extern void async_openat2(io_future_t & future, int dirfd, const char * pathname, struct open_how * how, size_t size, __u64 submit_flags);
137#endif
138extern void async_close(io_future_t & future, int fd, __u64 submit_flags);
139#if defined(CFA_HAVE_STATX)
140        extern void async_statx(io_future_t & future, int dirfd, const char * pathname, int flags, unsigned int mask, struct statx * statxbuf, __u64 submit_flags);
141#endif
142void async_read(io_future_t & future, int fd, void * buf, size_t count, __u64 submit_flags);
143extern void async_write(io_future_t & future, int fd, void * buf, size_t count, __u64 submit_flags);
144extern 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);
145extern void async_tee(io_future_t & future, int fd_in, int fd_out, size_t len, unsigned int flags, __u64 submit_flags);
146
147
148//-----------------------------------------------------------------------------
149// Check if a function is blocks a only the user thread
150bool has_user_level_blocking( fptr_t func );
151
152#if CFA_HAVE_LINUX_IO_URING_H
153        static inline void zero_sqe(struct io_uring_sqe * sqe) {
154                memset( sqe, 0, sizeof( struct io_uring_sqe ) );
155        }
156#endif
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