| 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 |
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| 37 | //=============================================================================================
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| 38 | // I/O uring backend
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| 39 | //=============================================================================================
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| 40 |
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| 41 | #if defined(CFA_HAVE_LINUX_IO_URING_H)
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| 42 | #include <assert.h>
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| 43 | #include <stdint.h>
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| 44 | #include <errno.h>
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| 45 | #include <linux/io_uring.h>
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| 46 |
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| 47 | #include "kernel/fwd.hfa"
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| 48 |
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| 49 | static const __u8 REGULAR_FLAGS = 0
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| 50 | #if defined(CFA_HAVE_IOSQE_FIXED_FILE)
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| 51 | | IOSQE_FIXED_FILE
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| 52 | #endif
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| 53 | #if defined(CFA_HAVE_IOSQE_IO_DRAIN)
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| 54 | | IOSQE_IO_DRAIN
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| 55 | #endif
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| 56 | #if defined(CFA_HAVE_IOSQE_IO_LINK)
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| 57 | | IOSQE_IO_LINK
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| 58 | #endif
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| 59 | #if defined(CFA_HAVE_IOSQE_IO_HARDLINK)
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| 60 | | IOSQE_IO_HARDLINK
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| 61 | #endif
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| 62 | #if defined(CFA_HAVE_IOSQE_ASYNC)
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| 63 | | IOSQE_ASYNC
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| 64 | #endif
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| 65 | #if defined(CFA_HAVE_IOSQE_BUFFER_SELECTED)
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| 66 | | IOSQE_BUFFER_SELECTED
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| 67 | #endif
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| 68 | ;
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| 69 |
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| 70 | static const __u32 SPLICE_FLAGS = 0
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| 71 | #if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
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| 72 | | SPLICE_F_FD_IN_FIXED
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| 73 | #endif
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| 74 | ;
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| 75 |
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| 76 | 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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| 77 | 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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| 78 | #endif
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| 79 |
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| 80 | //=============================================================================================
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| 81 | // I/O Forwards
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| 82 | //=============================================================================================
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| 83 | #include <time.hfa>
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| 84 |
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| 85 | // Some forward declarations
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| 86 | #include <errno.h>
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| 87 | #include <unistd.h>
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| 88 |
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| 89 | extern "C" {
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| 90 | #include <asm/types.h>
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| 91 | #include <sys/socket.h>
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| 92 | #include <sys/syscall.h>
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| 93 |
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| 94 | #if defined(CFA_HAVE_PREADV2)
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| 95 | struct iovec;
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| 96 | extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
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| 97 | #endif
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| 98 | #if defined(CFA_HAVE_PWRITEV2)
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| 99 | struct iovec;
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| 100 | extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
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| 101 | #endif
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| 102 |
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| 103 | extern int fsync(int fd);
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| 104 |
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| 105 | #if __OFF_T_MATCHES_OFF64_T
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| 106 | typedef __off64_t off_t;
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| 107 | #else
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| 108 | typedef __off_t off_t;
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| 109 | #endif
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| 110 | typedef __off64_t off64_t;
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| 111 | extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags);
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| 112 |
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| 113 | struct msghdr;
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| 114 | struct sockaddr;
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| 115 | extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
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| 116 | extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
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| 117 | extern ssize_t send(int sockfd, const void *buf, size_t len, int flags);
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| 118 | extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
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| 119 | extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
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| 120 | extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
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| 121 |
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| 122 | extern int fallocate(int fd, int mode, off_t offset, off_t len);
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| 123 | extern int posix_fadvise(int fd, off_t offset, off_t len, int advice);
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| 124 | extern int madvise(void *addr, size_t length, int advice);
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| 125 |
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| 126 | extern int openat(int dirfd, const char *pathname, int flags, mode_t mode);
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| 127 | extern int close(int fd);
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| 128 |
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| 129 | extern ssize_t read (int fd, void *buf, size_t count);
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| 130 |
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| 131 | struct epoll_event;
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| 132 | extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);
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| 133 |
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| 134 | 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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| 135 | extern ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags);
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| 136 | }
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| 137 |
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| 138 | //=============================================================================================
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| 139 | // I/O Interface
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| 140 | //=============================================================================================
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| 141 | """
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| 142 |
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| 143 | print(Header.format("A Date"))
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| 144 | print(Prelude)
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| 145 |
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| 146 | import re
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| 147 | import sys
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| 148 | class Call:
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| 149 | def __init__(self, op, signature, body, define=None):
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| 150 | sig = re.search("(.*) (.*)\((.*)\)", signature)
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| 151 | if not sig:
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| 152 | print("OP '{}' has invalid signature {}".format(op, signature), file=sys.stderr)
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| 153 | sys.exit(1)
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| 154 |
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| 155 | self.op = op
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| 156 | self.ret = sig.group(1)
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| 157 | self.name = sig.group(2)
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| 158 | self.params = sig.group(3)
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| 159 | self.define = define
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| 160 | self.body = ""
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| 161 |
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| 162 | accepted_keys = [ 'ioprio', 'fd', 'off', 'addr2','addr', 'splice_off_in','len',
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| 163 | 'rw_flags', 'fsync_flags', 'poll_events', 'poll32_events',
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| 164 | 'sync_range_flags', 'msg_flags', 'timeout_flags', 'accept_flags',
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| 165 | 'cancel_flags', 'open_flags', 'statx_flags', 'fadvise_advice',
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| 166 | 'splice_flags', 'buf_index' ,'buf_group' 'personality',
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| 167 | 'splice_fd_in' ]
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| 168 |
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| 169 | for k, v in body.items():
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| 170 | if not k in accepted_keys:
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| 171 | print("OP '{}' has invalid body kew {}".format(op, k), file=sys.stderr)
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| 172 | sys.exit(1)
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| 173 |
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| 174 | self.body += "\n sqe->{key} = {value};".format(key=k, value=v)
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| 175 |
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| 176 |
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| 177 | def args(self):
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| 178 | param_a = self.params.split(',')
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| 179 | args_a = [p.replace('*', ' ').split()[-1] for p in param_a]
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| 180 | for a in args_a:
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| 181 | if '*' in a:
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| 182 | print("OP '{}' has invalid * in argument {}".format(self.op, a), file=sys.stderr)
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| 183 | sys.exit(1)
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| 184 |
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| 185 | return ', '.join(args_a)
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| 186 |
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| 187 | AsyncTemplate = """inline void async_{name}(io_future_t & future, {params}, __u64 submit_flags) {{
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| 188 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_{op})
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| 189 | ssize_t res = {name}({args});
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| 190 | if (res >= 0) {{
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| 191 | fulfil(future, res);
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| 192 | }}
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| 193 | else {{
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| 194 | fulfil(future, -errno);
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| 195 | }}
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| 196 | #else
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| 197 | __u8 sflags = REGULAR_FLAGS & submit_flags;
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| 198 | __u32 idx;
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| 199 | struct io_uring_sqe * sqe;
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| 200 | struct $io_context * ctx = cfa_io_allocate( &sqe, &idx, 1 );
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| 201 |
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| 202 | sqe->opcode = IORING_OP_{op};
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| 203 | sqe->user_data = (uintptr_t)&future;
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| 204 | sqe->flags = sflags;
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| 205 | sqe->ioprio = 0;
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| 206 | sqe->fd = 0;
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| 207 | sqe->off = 0;
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| 208 | sqe->addr = 0;
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| 209 | sqe->len = 0;
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| 210 | sqe->fsync_flags = 0;
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| 211 | sqe->__pad2[0] = 0;
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| 212 | sqe->__pad2[1] = 0;
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| 213 | sqe->__pad2[2] = 0;{body}
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| 214 |
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| 215 | asm volatile("": : :"memory");
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| 216 |
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| 217 | verify( sqe->user_data == (uintptr_t)&future );
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| 218 | cfa_io_submit( ctx, &idx, 1, 0 != (submit_flags & CFA_IO_LAZY) );
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| 219 | #endif
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| 220 | }}"""
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| 221 |
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| 222 | SyncTemplate = """{ret} cfa_{name}({params}, __u64 submit_flags) {{
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| 223 | io_future_t future;
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| 224 |
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| 225 | async_{name}( future, {args}, submit_flags );
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| 226 |
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| 227 | wait( future );
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| 228 | if( future.result < 0 ) {{
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| 229 | errno = -future.result;
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| 230 | return -1;
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| 231 | }}
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| 232 | return future.result;
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| 233 | }}"""
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| 234 |
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| 235 | calls = [
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| 236 | # CFA_HAVE_IORING_OP_READV
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| 237 | Call('READV', 'ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', {
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| 238 | 'fd' : 'fd',
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| 239 | 'off' : 'offset',
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| 240 | 'addr': '(uintptr_t)iov',
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| 241 | 'len' : 'iovcnt',
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| 242 | }, define = 'CFA_HAVE_PREADV2'),
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| 243 | # CFA_HAVE_IORING_OP_WRITEV
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| 244 | Call('WRITEV', 'ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', {
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| 245 | 'fd' : 'fd',
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| 246 | 'off' : 'offset',
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| 247 | 'addr': '(uintptr_t)iov',
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| 248 | 'len' : 'iovcnt'
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| 249 | }, define = 'CFA_HAVE_PWRITEV2'),
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| 250 | # CFA_HAVE_IORING_OP_FSYNC
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| 251 | Call('FSYNC', 'int fsync(int fd)', {
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| 252 | 'fd': 'fd'
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| 253 | }),
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| 254 | # CFA_HAVE_IORING_OP_EPOLL_CTL
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| 255 | Call('EPOLL_CTL', 'int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)', {
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| 256 | 'fd': 'epfd',
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| 257 | 'addr': 'fd',
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| 258 | 'len': 'op',
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| 259 | 'off': '(uintptr_t)event'
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| 260 | }),
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| 261 | # CFA_HAVE_IORING_OP_SYNC_FILE_RANGE
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| 262 | Call('SYNC_FILE_RANGE', 'int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)', {
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| 263 | 'fd': 'fd',
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| 264 | 'off': 'offset',
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| 265 | 'len': 'nbytes',
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| 266 | 'sync_range_flags': 'flags'
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| 267 | }),
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| 268 | # CFA_HAVE_IORING_OP_SENDMSG
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| 269 | Call('SENDMSG', 'ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags)', {
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| 270 | 'fd': 'sockfd',
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| 271 | 'addr': '(uintptr_t)(struct msghdr *)msg',
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| 272 | 'len': '1',
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| 273 | 'msg_flags': 'flags'
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| 274 | }),
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| 275 | # CFA_HAVE_IORING_OP_RECVMSG
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| 276 | Call('RECVMSG', 'ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags)', {
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| 277 | 'fd': 'sockfd',
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| 278 | 'addr': '(uintptr_t)(struct msghdr *)msg',
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| 279 | 'len': '1',
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| 280 | 'msg_flags': 'flags'
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| 281 | }),
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| 282 | # CFA_HAVE_IORING_OP_SEND
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| 283 | Call('SEND', 'ssize_t send(int sockfd, const void *buf, size_t len, int flags)', {
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| 284 | 'fd': 'sockfd',
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| 285 | 'addr': '(uintptr_t)buf',
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| 286 | 'len': 'len',
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| 287 | 'msg_flags': 'flags'
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| 288 | }),
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| 289 | # CFA_HAVE_IORING_OP_RECV
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| 290 | Call('RECV', 'ssize_t recv(int sockfd, void *buf, size_t len, int flags)', {
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| 291 | 'fd': 'sockfd',
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| 292 | 'addr': '(uintptr_t)buf',
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| 293 | 'len': 'len',
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| 294 | 'msg_flags': 'flags'
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| 295 | }),
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| 296 | # CFA_HAVE_IORING_OP_ACCEPT
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| 297 | Call('ACCEPT', 'int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags)', {
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| 298 | 'fd': 'sockfd',
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| 299 | 'addr': '(uintptr_t)addr',
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| 300 | 'addr2': '(uintptr_t)addrlen',
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| 301 | 'accept_flags': 'flags'
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| 302 | }),
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| 303 | # CFA_HAVE_IORING_OP_CONNECT
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| 304 | Call('CONNECT', 'int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen)', {
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| 305 | 'fd': 'sockfd',
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| 306 | 'addr': '(uintptr_t)addr',
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| 307 | 'off': 'addrlen'
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| 308 | }),
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| 309 | # CFA_HAVE_IORING_OP_FALLOCATE
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| 310 | Call('FALLOCATE', 'int fallocate(int fd, int mode, off_t offset, off_t len)', {
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| 311 | 'fd': 'fd',
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| 312 | 'addr': '(uintptr_t)len',
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| 313 | 'len': 'mode',
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| 314 | 'off': 'offset'
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| 315 | }),
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| 316 | # CFA_HAVE_IORING_OP_FADVISE
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| 317 | Call('FADVISE', 'int posix_fadvise(int fd, off_t offset, off_t len, int advice)', {
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| 318 | 'fd': 'fd',
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| 319 | 'off': 'offset',
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| 320 | 'len': 'len',
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| 321 | 'fadvise_advice': 'advice'
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| 322 | }),
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| 323 | # CFA_HAVE_IORING_OP_MADVISE
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| 324 | Call('MADVISE', 'int madvise(void *addr, size_t length, int advice)', {
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| 325 | 'addr': '(uintptr_t)addr',
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| 326 | 'len': 'length',
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| 327 | 'fadvise_advice': 'advice'
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| 328 | }),
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| 329 | # CFA_HAVE_IORING_OP_OPENAT
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| 330 | Call('OPENAT', 'int openat(int dirfd, const char *pathname, int flags, mode_t mode)', {
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| 331 | 'fd': 'dirfd',
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| 332 | 'addr': '(uintptr_t)pathname',
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| 333 | 'len': 'mode',
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| 334 | 'open_flags': 'flags;'
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| 335 | }),
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| 336 | # CFA_HAVE_IORING_OP_OPENAT2
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| 337 | Call('OPENAT2', 'int openat2(int dirfd, const char *pathname, struct open_how * how, size_t size)', {
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| 338 | 'fd': 'dirfd',
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| 339 | 'addr': 'pathname',
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| 340 | 'len': 'sizeof(*how)',
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| 341 | 'off': '(uintptr_t)how',
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| 342 | }, define = 'CFA_HAVE_OPENAT2'),
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| 343 | # CFA_HAVE_IORING_OP_CLOSE
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| 344 | Call('CLOSE', 'int close(int fd)', {
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| 345 | 'fd': 'fd'
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| 346 | }),
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| 347 | # CFA_HAVE_IORING_OP_STATX
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| 348 | Call('STATX', 'int statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf)', {
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| 349 | 'fd': 'dirfd',
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| 350 | 'off': '(uintptr_t)statxbuf',
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| 351 | 'addr': 'pathname',
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| 352 | 'len': 'mask',
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| 353 | 'statx_flags': 'flags'
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| 354 | }, define = 'CFA_HAVE_STATX'),
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| 355 | # CFA_HAVE_IORING_OP_READ
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| 356 | Call('READ', 'ssize_t read(int fd, void * buf, size_t count)', {
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| 357 | 'fd': 'fd',
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| 358 | 'addr': '(uintptr_t)buf',
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| 359 | 'len': 'count'
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| 360 | }),
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| 361 | # CFA_HAVE_IORING_OP_WRITE
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| 362 | Call('WRITE', 'ssize_t write(int fd, void * buf, size_t count)', {
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| 363 | 'fd': 'fd',
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| 364 | 'addr': '(uintptr_t)buf',
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| 365 | 'len': 'count'
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| 366 | }),
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| 367 | # CFA_HAVE_IORING_OP_SPLICE
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| 368 | 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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| 369 | 'splice_fd_in': 'fd_in',
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| 370 | 'splice_off_in': 'off_in ? (__u64)*off_in : (__u64)-1',
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| 371 | 'fd': 'fd_out',
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| 372 | 'off': 'off_out ? (__u64)*off_out : (__u64)-1',
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| 373 | 'len': 'len',
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| 374 | 'splice_flags': 'flags'
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| 375 | }),
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| 376 | # CFA_HAVE_IORING_OP_TEE
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| 377 | Call('TEE', 'ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags)', {
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| 378 | 'splice_fd_in': 'fd_in',
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| 379 | 'fd': 'fd_out',
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| 380 | 'len': 'len',
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| 381 | 'splice_flags': 'flags'
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| 382 | })
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| 383 | ]
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| 384 |
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| 385 | print("//----------")
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| 386 | print("// synchronous calls")
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| 387 | for c in calls:
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| 388 | if c.define:
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| 389 | print("""#if defined({define})
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| 390 | {ret} cfa_{name}({params}, __u64 submit_flags);
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| 391 | #endif""".format(define=c.define,ret=c.ret, name=c.name, params=c.params))
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| 392 | else:
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| 393 | print("{ret} cfa_{name}({params}, __u64 submit_flags);"
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| 394 | .format(ret=c.ret, name=c.name, params=c.params))
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| 395 |
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| 396 | print("\n//----------")
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| 397 | print("// asynchronous calls")
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| 398 | for c in calls:
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| 399 | if c.define:
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| 400 | print("""#if defined({define})
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| 401 | void async_{name}(io_future_t & future, {params}, __u64 submit_flags);
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| 402 | #endif""".format(define=c.define,name=c.name, params=c.params))
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| 403 | else:
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| 404 | print("void async_{name}(io_future_t & future, {params}, __u64 submit_flags);"
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| 405 | .format(name=c.name, params=c.params))
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| 406 | print("\n")
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| 407 |
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| 408 | for c in calls:
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| 409 | print("//-----------------------------------------------------------------------------")
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| 410 | print("// {}".format(c.name))
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| 411 | Async = AsyncTemplate.format(
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| 412 | name = c.name,
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|---|
| 413 | ret = c.ret,
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|---|
| 414 | params = c.params,
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|---|
| 415 | args = c.args(),
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| 416 | op = c.op,
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|---|
| 417 | body = c.body
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|---|
| 418 |
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| 419 | )
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|---|
| 420 | Sync = SyncTemplate.format(
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|---|
| 421 | name = c.name,
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|---|
| 422 | ret = c.ret,
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|---|
| 423 | params = c.params,
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|---|
| 424 | args = c.args()
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|---|
| 425 | )
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|---|
| 426 |
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|---|
| 427 | if c.define:
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|---|
| 428 | print("""#if defined({})
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|---|
| 429 | //----------
|
|---|
| 430 | // asynchronous call
|
|---|
| 431 | {}
|
|---|
| 432 |
|
|---|
| 433 | //----------
|
|---|
| 434 | // synchronous call
|
|---|
| 435 | {}
|
|---|
| 436 | #endif
|
|---|
| 437 | """.format(c.define, "\n\t".join( Async.splitlines() ), "\n\t".join( Sync.splitlines() )))
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|---|
| 438 | else :
|
|---|
| 439 | print("""//----------
|
|---|
| 440 | // asynchronous call
|
|---|
| 441 | {}
|
|---|
| 442 |
|
|---|
| 443 | //----------
|
|---|
| 444 | // synchronous call
|
|---|
| 445 | {}
|
|---|
| 446 | """.format(Async, Sync))
|
|---|
| 447 |
|
|---|
| 448 | print("""
|
|---|
| 449 | //-----------------------------------------------------------------------------
|
|---|
| 450 | // Check if a function is has asynchronous
|
|---|
| 451 | bool has_user_level_blocking( fptr_t func ) {
|
|---|
| 452 | #if defined(CFA_HAVE_LINUX_IO_URING_H)""")
|
|---|
| 453 |
|
|---|
| 454 | for c in calls:
|
|---|
| 455 | if c.define:
|
|---|
| 456 | print(""" #if defined({define})
|
|---|
| 457 | if( /*func == (fptr_t)preadv2 || */
|
|---|
| 458 | func == (fptr_t)cfa_{name} ||
|
|---|
| 459 | func == (fptr_t)async_{name} ) {{
|
|---|
| 460 | #if defined(CFA_HAVE_IORING_OP_{op})
|
|---|
| 461 | return true;
|
|---|
| 462 | #else
|
|---|
| 463 | return false;
|
|---|
| 464 | #endif
|
|---|
| 465 | }}
|
|---|
| 466 | #endif""".format(define=c.define, name=c.name, op=c.op))
|
|---|
| 467 | else:
|
|---|
| 468 | print(""" if( /*func == (fptr_t)preadv2 || */
|
|---|
| 469 | func == (fptr_t)cfa_{name} ||
|
|---|
| 470 | func == (fptr_t)async_{name} ) {{
|
|---|
| 471 | #if defined(CFA_HAVE_IORING_OP_{op})
|
|---|
| 472 | return true;
|
|---|
| 473 | #else
|
|---|
| 474 | return false;
|
|---|
| 475 | #endif
|
|---|
| 476 | }}""".format(name=c.name, op=c.op))
|
|---|
| 477 |
|
|---|
| 478 | print(""" #endif
|
|---|
| 479 |
|
|---|
| 480 | return false;
|
|---|
| 481 | }""")
|
|---|
