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