| 1 | #!python3
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| 2 | #
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| 3 | # Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
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| 4 | #
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| 5 | # The contents of this file are covered under the licence agreement in the
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| 6 | # file "LICENCE" distributed with Cforall.
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| 7 | #
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| 8 | # call.cfa.in -- Python script to generate io/call.cfa
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| 9 | #
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| 10 | # Author : Thierry Delisle
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| 11 | # Created On : Fri Sep 11 12:41:16 2020
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| 12 | # Last Modified By :
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| 13 | # Last Modified On :
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| 14 | # Update Count :
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| 15 | #
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| 16 |
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| 17 | Header = """//
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| 18 | // Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
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| 19 | //
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| 20 | // The contents of this file are covered under the licence agreement in the
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| 21 | // file "LICENCE" distributed with Cforall.
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| 22 | //
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| 23 | // call.cfa -- Api for cforall
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| 24 | //
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| 25 | // Author : Generated from call.cfa.in
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| 26 | // Created On : {}
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| 27 | //
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| 28 |
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| 29 | """
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| 30 |
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| 31 | Prelude = """#define __cforall_thread__
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| 32 |
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| 33 | #include "bits/defs.hfa"
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| 34 | #include "kernel.hfa"
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| 35 | #include "io/types.hfa"
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| 36 | #include "stats.hfa"
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| 37 |
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| 38 | //=============================================================================================
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| 39 | // I/O uring backend
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| 40 | //=============================================================================================
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| 41 |
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| 42 | #if defined(CFA_HAVE_LINUX_IO_URING_H)
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| 43 | #include <assert.h>
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| 44 | #include <stdint.h>
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| 45 | #include <errno.h>
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| 46 | #include <linux/io_uring.h>
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| 47 |
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| 48 | #include "kernel/fwd.hfa"
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| 49 |
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| 50 | static const __u8 REGULAR_FLAGS = 0
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| 51 | #if defined(CFA_HAVE_IOSQE_FIXED_FILE)
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| 52 | | IOSQE_FIXED_FILE
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| 53 | #endif
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| 54 | #if defined(CFA_HAVE_IOSQE_IO_DRAIN)
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| 55 | | IOSQE_IO_DRAIN
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| 56 | #endif
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| 57 | #if defined(CFA_HAVE_IOSQE_IO_LINK)
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| 58 | | IOSQE_IO_LINK
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| 59 | #endif
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| 60 | #if defined(CFA_HAVE_IOSQE_IO_HARDLINK)
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| 61 | | IOSQE_IO_HARDLINK
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| 62 | #endif
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| 63 | #if defined(CFA_HAVE_IOSQE_ASYNC)
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| 64 | | IOSQE_ASYNC
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| 65 | #endif
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| 66 | #if defined(CFA_HAVE_IOSQE_BUFFER_SELECTED)
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| 67 | | IOSQE_BUFFER_SELECTED
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| 68 | #endif
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| 69 | ;
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| 70 |
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| 71 | static const __u32 SPLICE_FLAGS = 0
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| 72 | #if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
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| 73 | | SPLICE_F_FD_IN_FIXED
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| 74 | #endif
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| 75 | ;
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| 76 |
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| 77 | extern struct io_context$ * cfa_io_allocate(struct io_uring_sqe * out_sqes[], __u32 out_idxs[], __u32 want) __attribute__((nonnull (1,2)));
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| 78 | extern void cfa_io_submit( struct io_context$ * in_ctx, __u32 in_idxs[], __u32 have, bool lazy ) __attribute__((nonnull (1,2)));
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| 79 | #endif
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| 80 |
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| 81 | //=============================================================================================
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| 82 | // I/O Forwards
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| 83 | //=============================================================================================
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| 84 | #include <time.hfa>
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| 85 |
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| 86 | // Some forward declarations
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| 87 | #include <errno.h>
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| 88 | #include <unistd.h>
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| 89 |
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| 90 | extern "C" {
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| 91 | #include <asm/types.h>
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| 92 | #include <sys/socket.h>
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| 93 | #include <sys/syscall.h>
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| 94 |
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| 95 | #if defined(CFA_HAVE_PREADV2)
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| 96 | struct iovec;
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| 97 | extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
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| 98 | #endif
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| 99 | #if defined(CFA_HAVE_PWRITEV2)
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| 100 | struct iovec;
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| 101 | extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
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| 102 | #endif
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| 103 |
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| 104 | extern int fsync(int fd);
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| 105 |
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| 106 | #if __OFF_T_MATCHES_OFF64_T
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| 107 | typedef __off64_t off_t;
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| 108 | #else
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| 109 | typedef __off_t off_t;
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| 110 | #endif
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| 111 | typedef __off64_t off64_t;
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| 112 | extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags);
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| 113 |
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| 114 | struct msghdr;
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| 115 | struct sockaddr;
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| 116 | extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
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| 117 | extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
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| 118 | extern ssize_t send(int sockfd, const void *buf, size_t len, int flags);
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| 119 | extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
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| 120 | extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
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| 121 | extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
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| 122 |
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| 123 | extern int fallocate(int fd, int mode, off_t offset, off_t len);
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| 124 | extern int posix_fadvise(int fd, off_t offset, off_t len, int advice);
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| 125 | extern int madvise(void *addr, size_t length, int advice);
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| 126 |
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| 127 | extern int openat(int dirfd, const char *pathname, int flags, mode_t mode);
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| 128 | extern int close(int fd);
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| 129 |
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| 130 | extern ssize_t read (int fd, void *buf, size_t count);
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| 131 |
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| 132 | struct epoll_event;
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| 133 | extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);
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| 134 |
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| 135 | extern ssize_t splice(int fd_in, __off64_t *off_in, int fd_out, __off64_t *off_out, size_t len, unsigned int flags);
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| 136 | extern ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags);
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| 137 | }
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| 138 |
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| 139 | //=============================================================================================
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| 140 | // I/O Interface
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| 141 | //=============================================================================================
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| 142 | #pragma GCC visibility push(default)
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| 143 | """
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| 144 |
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| 145 | print(Header.format("A Date"))
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| 146 | print(Prelude)
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| 147 |
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| 148 | import re
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| 149 | import sys
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| 150 | class Call:
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| 151 | def __init__(self, op, signature, body, define=None):
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| 152 | sig = re.search("(.*) (.*)\((.*)\)", signature)
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| 153 | if not sig:
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| 154 | print("OP '{}' has invalid signature {}".format(op, signature), file=sys.stderr)
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| 155 | sys.exit(1)
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| 156 |
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| 157 | self.op = op
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| 158 | self.ret = sig.group(1)
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| 159 | self.name = sig.group(2)
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| 160 | self.params = sig.group(3)
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| 161 | self.define = define
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| 162 | self.body = ""
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| 163 |
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| 164 | accepted_keys = [ 'ioprio', 'fd', 'off', 'addr2','addr', 'splice_off_in','len',
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| 165 | 'rw_flags', 'fsync_flags', 'poll_events', 'poll32_events',
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| 166 | 'sync_range_flags', 'msg_flags', 'timeout_flags', 'accept_flags',
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| 167 | 'cancel_flags', 'open_flags', 'statx_flags', 'fadvise_advice',
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| 168 | 'splice_flags', 'buf_index' ,'buf_group' 'personality',
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| 169 | 'splice_fd_in' ]
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| 170 |
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| 171 | for k, v in body.items():
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| 172 | if not k in accepted_keys:
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| 173 | print("OP '{}' has invalid body kew {}".format(op, k), file=sys.stderr)
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| 174 | sys.exit(1)
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| 175 |
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| 176 | self.body += "\n sqe->{key} = {value};".format(key=k, value=v)
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| 177 |
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| 178 |
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| 179 | def args(self):
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| 180 | param_a = self.params.split(',')
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| 181 | args_a = [p.replace('*', ' ').split()[-1] for p in param_a]
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| 182 | for a in args_a:
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| 183 | if '*' in a:
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| 184 | print("OP '{}' has invalid * in argument {}".format(self.op, a), file=sys.stderr)
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| 185 | sys.exit(1)
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| 186 |
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| 187 | return ', '.join(args_a)
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| 188 |
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| 189 | AsyncTemplate = """inline void async_{name}(io_future_t & future, {params}, __u64 submit_flags) {{
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| 190 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_{op})
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| 191 | ssize_t res = {name}({args});
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| 192 | if (res >= 0) {{
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| 193 | fulfil(future, res);
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| 194 | }}
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| 195 | else {{
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| 196 | fulfil(future, -errno);
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| 197 | }}
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| 198 | #else
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| 199 | __u8 sflags = REGULAR_FLAGS & submit_flags;
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| 200 | __u32 idx;
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| 201 | struct io_uring_sqe * sqe;
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| 202 | struct io_context$ * ctx = cfa_io_allocate( &sqe, &idx, 1 );
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| 203 |
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| 204 | memset(sqe, 0, sizeof(*sqe));
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| 205 | sqe->opcode = IORING_OP_{op};
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| 206 | sqe->flags = sflags;
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| 207 | sqe->user_data = (uintptr_t)&future;
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| 208 | {body}
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| 209 |
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| 210 | asm volatile("": : :"memory");
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| 211 |
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| 212 | verify( sqe->user_data == (uintptr_t)&future );
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| 213 | cfa_io_submit( ctx, &idx, 1, 0 != (submit_flags & CFA_IO_LAZY) );
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| 214 | #endif
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| 215 | }}"""
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| 216 |
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| 217 | SyncTemplate = """{ret} cfa_{name}({params}, __u64 submit_flags) {{
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| 218 | io_future_t future;
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| 219 |
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| 220 | async_{name}( future, {args}, submit_flags );
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| 221 |
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| 222 | __attribute__((unused)) bool parked;
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| 223 | parked = wait( future );
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| 224 | __STATS__(false, if(!parked) io.submit.nblk += 1; )
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| 225 | if( future.result < 0 ) {{
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| 226 | errno = -future.result;
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| 227 | return -1;
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| 228 | }}
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| 229 | return future.result;
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| 230 | }}"""
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| 231 |
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| 232 | calls = [
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| 233 | # CFA_HAVE_IORING_OP_READV
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| 234 | Call('READV', 'ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', {
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| 235 | 'fd' : 'fd',
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| 236 | 'off' : 'offset',
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| 237 | 'addr': '(uintptr_t)iov',
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| 238 | 'len' : 'iovcnt',
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| 239 | }, define = 'CFA_HAVE_PREADV2'),
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| 240 | # CFA_HAVE_IORING_OP_WRITEV
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| 241 | Call('WRITEV', 'ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', {
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| 242 | 'fd' : 'fd',
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| 243 | 'off' : 'offset',
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| 244 | 'addr': '(uintptr_t)iov',
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| 245 | 'len' : 'iovcnt'
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| 246 | }, define = 'CFA_HAVE_PWRITEV2'),
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| 247 | # CFA_HAVE_IORING_OP_FSYNC
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| 248 | Call('FSYNC', 'int fsync(int fd)', {
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| 249 | 'fd': 'fd'
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| 250 | }),
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| 251 | # CFA_HAVE_IORING_OP_EPOLL_CTL
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| 252 | Call('EPOLL_CTL', 'int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)', {
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| 253 | 'fd': 'epfd',
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| 254 | 'addr': 'fd',
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| 255 | 'len': 'op',
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| 256 | 'off': '(uintptr_t)event'
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| 257 | }),
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| 258 | # CFA_HAVE_IORING_OP_SYNC_FILE_RANGE
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| 259 | Call('SYNC_FILE_RANGE', 'int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)', {
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| 260 | 'fd': 'fd',
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| 261 | 'off': 'offset',
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| 262 | 'len': 'nbytes',
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| 263 | 'sync_range_flags': 'flags'
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| 264 | }),
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| 265 | # CFA_HAVE_IORING_OP_SENDMSG
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| 266 | Call('SENDMSG', 'ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags)', {
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| 267 | 'fd': 'sockfd',
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| 268 | 'addr': '(uintptr_t)(struct msghdr *)msg',
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| 269 | 'len': '1',
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| 270 | 'msg_flags': 'flags'
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| 271 | }),
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| 272 | # CFA_HAVE_IORING_OP_RECVMSG
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| 273 | Call('RECVMSG', 'ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags)', {
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| 274 | 'fd': 'sockfd',
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| 275 | 'addr': '(uintptr_t)(struct msghdr *)msg',
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| 276 | 'len': '1',
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| 277 | 'msg_flags': 'flags'
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| 278 | }),
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| 279 | # CFA_HAVE_IORING_OP_SEND
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| 280 | Call('SEND', 'ssize_t send(int sockfd, const void *buf, size_t len, int flags)', {
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| 281 | 'fd': 'sockfd',
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| 282 | 'addr': '(uintptr_t)buf',
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| 283 | 'len': 'len',
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| 284 | 'msg_flags': 'flags'
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| 285 | }),
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| 286 | # CFA_HAVE_IORING_OP_RECV
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| 287 | Call('RECV', 'ssize_t recv(int sockfd, void *buf, size_t len, int flags)', {
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| 288 | 'fd': 'sockfd',
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| 289 | 'addr': '(uintptr_t)buf',
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| 290 | 'len': 'len',
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| 291 | 'msg_flags': 'flags'
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| 292 | }),
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| 293 | # CFA_HAVE_IORING_OP_ACCEPT
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| 294 | Call('ACCEPT', 'int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags)', {
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| 295 | 'fd': 'sockfd',
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| 296 | 'addr': '(uintptr_t)addr',
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| 297 | 'addr2': '(uintptr_t)addrlen',
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| 298 | 'accept_flags': 'flags'
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| 299 | }),
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| 300 | # CFA_HAVE_IORING_OP_CONNECT
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| 301 | Call('CONNECT', 'int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen)', {
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| 302 | 'fd': 'sockfd',
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| 303 | 'addr': '(uintptr_t)addr',
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| 304 | 'off': 'addrlen'
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| 305 | }),
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| 306 | # CFA_HAVE_IORING_OP_FALLOCATE
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| 307 | Call('FALLOCATE', 'int fallocate(int fd, int mode, off_t offset, off_t len)', {
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| 308 | 'fd': 'fd',
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| 309 | 'addr': '(uintptr_t)len',
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| 310 | 'len': 'mode',
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| 311 | 'off': 'offset'
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| 312 | }),
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| 313 | # CFA_HAVE_IORING_OP_FADVISE
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| 314 | Call('FADVISE', 'int posix_fadvise(int fd, off_t offset, off_t len, int advice)', {
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| 315 | 'fd': 'fd',
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| 316 | 'off': 'offset',
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| 317 | 'len': 'len',
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| 318 | 'fadvise_advice': 'advice'
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| 319 | }),
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| 320 | # CFA_HAVE_IORING_OP_MADVISE
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| 321 | Call('MADVISE', 'int madvise(void *addr, size_t length, int advice)', {
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| 322 | 'addr': '(uintptr_t)addr',
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| 323 | 'len': 'length',
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| 324 | 'fadvise_advice': 'advice'
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| 325 | }),
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| 326 | # CFA_HAVE_IORING_OP_OPENAT
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| 327 | Call('OPENAT', 'int openat(int dirfd, const char *pathname, int flags, mode_t mode)', {
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| 328 | 'fd': 'dirfd',
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| 329 | 'addr': '(uintptr_t)pathname',
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| 330 | 'len': 'mode',
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| 331 | 'open_flags': 'flags;'
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| 332 | }),
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| 333 | # CFA_HAVE_IORING_OP_OPENAT2
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| 334 | Call('OPENAT2', 'int openat2(int dirfd, const char *pathname, struct open_how * how, size_t size)', {
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| 335 | 'fd': 'dirfd',
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| 336 | 'addr': 'pathname',
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| 337 | 'len': 'sizeof(*how)',
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| 338 | 'off': '(uintptr_t)how',
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| 339 | }, define = 'CFA_HAVE_OPENAT2'),
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| 340 | # CFA_HAVE_IORING_OP_CLOSE
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| 341 | Call('CLOSE', 'int close(int fd)', {
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| 342 | 'fd': 'fd'
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| 343 | }),
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| 344 | # CFA_HAVE_IORING_OP_STATX
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| 345 | Call('STATX', 'int statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf)', {
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| 346 | 'fd': 'dirfd',
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| 347 | 'off': '(uintptr_t)statxbuf',
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| 348 | 'addr': 'pathname',
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| 349 | 'len': 'mask',
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| 350 | 'statx_flags': 'flags'
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| 351 | }, define = 'CFA_HAVE_STATX'),
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| 352 | # CFA_HAVE_IORING_OP_READ
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| 353 | Call('READ', 'ssize_t read(int fd, void * buf, size_t count)', {
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| 354 | 'fd': 'fd',
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| 355 | 'addr': '(uintptr_t)buf',
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| 356 | 'len': 'count'
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| 357 | }),
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| 358 | # CFA_HAVE_IORING_OP_WRITE
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| 359 | Call('WRITE', 'ssize_t write(int fd, void * buf, size_t count)', {
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| 360 | 'fd': 'fd',
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| 361 | 'addr': '(uintptr_t)buf',
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| 362 | 'len': 'count'
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| 363 | }),
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| 364 | # CFA_HAVE_IORING_OP_SPLICE
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| 365 | Call('SPLICE', 'ssize_t splice(int fd_in, __off64_t *off_in, int fd_out, __off64_t *off_out, size_t len, unsigned int flags)', {
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| 366 | 'splice_fd_in': 'fd_in',
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| 367 | 'splice_off_in': 'off_in ? (__u64)*off_in : (__u64)-1',
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| 368 | 'fd': 'fd_out',
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| 369 | 'off': 'off_out ? (__u64)*off_out : (__u64)-1',
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| 370 | 'len': 'len',
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| 371 | 'splice_flags': 'flags'
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| 372 | }),
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| 373 | # CFA_HAVE_IORING_OP_TEE
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| 374 | Call('TEE', 'ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags)', {
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| 375 | 'splice_fd_in': 'fd_in',
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| 376 | 'fd': 'fd_out',
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| 377 | 'len': 'len',
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| 378 | 'splice_flags': 'flags'
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| 379 | })
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| 380 | ]
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| 381 |
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| 382 | print("//----------")
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| 383 | print("// synchronous calls")
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| 384 | for c in calls:
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| 385 | if c.define:
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| 386 | print("""#if defined({define})
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| 387 | {ret} cfa_{name}({params}, __u64 submit_flags);
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| 388 | #endif""".format(define=c.define,ret=c.ret, name=c.name, params=c.params))
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| 389 | else:
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| 390 | print("{ret} cfa_{name}({params}, __u64 submit_flags);"
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| 391 | .format(ret=c.ret, name=c.name, params=c.params))
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| 392 |
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| 393 | print("\n//----------")
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| 394 | print("// asynchronous calls")
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| 395 | for c in calls:
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| 396 | if c.define:
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| 397 | print("""#if defined({define})
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| 398 | void async_{name}(io_future_t & future, {params}, __u64 submit_flags);
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| 399 | #endif""".format(define=c.define,name=c.name, params=c.params))
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| 400 | else:
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| 401 | print("void async_{name}(io_future_t & future, {params}, __u64 submit_flags);"
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| 402 | .format(name=c.name, params=c.params))
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|---|
| 403 | print("\n")
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|---|
| 404 |
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|---|
| 405 | for c in calls:
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|---|
| 406 | print("//-----------------------------------------------------------------------------")
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|---|
| 407 | print("// {}".format(c.name))
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|---|
| 408 | Async = AsyncTemplate.format(
|
|---|
| 409 | name = c.name,
|
|---|
| 410 | ret = c.ret,
|
|---|
| 411 | params = c.params,
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|---|
| 412 | args = c.args(),
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|---|
| 413 | op = c.op,
|
|---|
| 414 | body = c.body
|
|---|
| 415 |
|
|---|
| 416 | )
|
|---|
| 417 | Sync = SyncTemplate.format(
|
|---|
| 418 | name = c.name,
|
|---|
| 419 | ret = c.ret,
|
|---|
| 420 | params = c.params,
|
|---|
| 421 | args = c.args()
|
|---|
| 422 | )
|
|---|
| 423 |
|
|---|
| 424 | if c.define:
|
|---|
| 425 | print("""#if defined({})
|
|---|
| 426 | //----------
|
|---|
| 427 | // asynchronous call
|
|---|
| 428 | {}
|
|---|
| 429 |
|
|---|
| 430 | //----------
|
|---|
| 431 | // synchronous call
|
|---|
| 432 | {}
|
|---|
| 433 | #endif
|
|---|
| 434 | """.format(c.define, "\n\t".join( Async.splitlines() ), "\n\t".join( Sync.splitlines() )))
|
|---|
| 435 | else :
|
|---|
| 436 | print("""//----------
|
|---|
| 437 | // asynchronous call
|
|---|
| 438 | {}
|
|---|
| 439 |
|
|---|
| 440 | //----------
|
|---|
| 441 | // synchronous call
|
|---|
| 442 | {}
|
|---|
| 443 | """.format(Async, Sync))
|
|---|
| 444 |
|
|---|
| 445 | print("""
|
|---|
| 446 | //-----------------------------------------------------------------------------
|
|---|
| 447 | // Check if a function is has asynchronous
|
|---|
| 448 | bool has_user_level_blocking( fptr_t func ) {
|
|---|
| 449 | #if defined(CFA_HAVE_LINUX_IO_URING_H)""")
|
|---|
| 450 |
|
|---|
| 451 | for c in calls:
|
|---|
| 452 | if c.define:
|
|---|
| 453 | print(""" #if defined({define})
|
|---|
| 454 | if( /*func == (fptr_t)preadv2 || */
|
|---|
| 455 | func == (fptr_t)cfa_{name} ||
|
|---|
| 456 | func == (fptr_t)async_{name} ) {{
|
|---|
| 457 | #if defined(CFA_HAVE_IORING_OP_{op})
|
|---|
| 458 | return true;
|
|---|
| 459 | #else
|
|---|
| 460 | return false;
|
|---|
| 461 | #endif
|
|---|
| 462 | }}
|
|---|
| 463 | #endif""".format(define=c.define, name=c.name, op=c.op))
|
|---|
| 464 | else:
|
|---|
| 465 | print(""" if( /*func == (fptr_t)preadv2 || */
|
|---|
| 466 | func == (fptr_t)cfa_{name} ||
|
|---|
| 467 | func == (fptr_t)async_{name} ) {{
|
|---|
| 468 | #if defined(CFA_HAVE_IORING_OP_{op})
|
|---|
| 469 | return true;
|
|---|
| 470 | #else
|
|---|
| 471 | return false;
|
|---|
| 472 | #endif
|
|---|
| 473 | }}""".format(name=c.name, op=c.op))
|
|---|
| 474 |
|
|---|
| 475 | print(""" #endif
|
|---|
| 476 |
|
|---|
| 477 | return false;
|
|---|
| 478 | }""")
|
|---|
