[c402739f] | 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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[0e52f14] | 35 | #include "io/types.hfa" |
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[c402739f] | 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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[290553a] | 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_ASYNC) |
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| 57 | | IOSQE_ASYNC |
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| 58 | #endif |
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| 59 | ; |
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[c402739f] | 60 | |
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[290553a] | 61 | static const __u32 LINK_FLAGS = 0 |
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| 62 | #if defined(CFA_HAVE_IOSQE_IO_LINK) |
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| 63 | | IOSQE_IO_LINK |
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| 64 | #endif |
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| 65 | #if defined(CFA_HAVE_IOSQE_IO_HARDLINK) |
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| 66 | | IOSQE_IO_HARDLINK |
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| 67 | #endif |
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| 68 | ; |
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[c402739f] | 69 | |
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[290553a] | 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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[c402739f] | 75 | |
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[426f60c] | 76 | extern [* volatile struct io_uring_sqe, __u32] __submit_alloc( struct __io_data & ring, __u64 data ); |
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[c402739f] | 77 | extern void __submit( struct io_context * ctx, __u32 idx ) __attribute__((nonnull (1))); |
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| 78 | |
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| 79 | static inline io_context * __get_io_context( void ) { |
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| 80 | cluster * cltr = active_cluster(); |
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| 81 | |
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| 82 | /* paranoid */ verifyf( cltr, "No active cluster for io operation\\n"); |
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| 83 | assertf( cltr->io.cnt > 0, "Cluster %p has no default io contexts and no context was specified\\n", cltr ); |
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| 84 | |
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| 85 | /* paranoid */ verifyf( cltr->io.ctxs, "default io contexts for cluster %p are missing\\n", cltr); |
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[fe9468e2] | 86 | return &cltr->io.ctxs[ thread_rand() % cltr->io.cnt ]; |
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[c402739f] | 87 | } |
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| 88 | #endif |
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| 89 | |
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| 90 | //============================================================================================= |
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| 91 | // I/O Forwards |
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| 92 | //============================================================================================= |
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| 93 | #include <time.hfa> |
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| 94 | |
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| 95 | // Some forward declarations |
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| 96 | #include <errno.h> |
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| 97 | #include <unistd.h> |
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| 98 | |
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| 99 | extern "C" { |
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| 100 | #include <sys/types.h> |
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| 101 | #include <sys/socket.h> |
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| 102 | #include <sys/syscall.h> |
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| 103 | |
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[ace2e92] | 104 | #if defined(CFA_HAVE_PREADV2) |
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[c402739f] | 105 | struct iovec; |
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| 106 | extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags); |
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| 107 | #endif |
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[ace2e92] | 108 | #if defined(CFA_HAVE_PWRITEV2) |
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[c402739f] | 109 | struct iovec; |
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| 110 | extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags); |
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| 111 | #endif |
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| 112 | |
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| 113 | extern int fsync(int fd); |
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| 114 | |
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| 115 | #if __OFF_T_MATCHES_OFF64_T |
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| 116 | typedef __off64_t off_t; |
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| 117 | #else |
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| 118 | typedef __off_t off_t; |
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| 119 | #endif |
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| 120 | typedef __off64_t off64_t; |
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| 121 | extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags); |
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| 122 | |
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| 123 | struct msghdr; |
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| 124 | struct sockaddr; |
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| 125 | extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags); |
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| 126 | extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags); |
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| 127 | extern ssize_t send(int sockfd, const void *buf, size_t len, int flags); |
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| 128 | extern ssize_t recv(int sockfd, void *buf, size_t len, int flags); |
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| 129 | extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags); |
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| 130 | extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen); |
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| 131 | |
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| 132 | extern int fallocate(int fd, int mode, off_t offset, off_t len); |
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| 133 | extern int posix_fadvise(int fd, off_t offset, off_t len, int advice); |
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| 134 | extern int madvise(void *addr, size_t length, int advice); |
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| 135 | |
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| 136 | extern int openat(int dirfd, const char *pathname, int flags, mode_t mode); |
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| 137 | extern int close(int fd); |
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| 138 | |
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| 139 | extern ssize_t read (int fd, void *buf, size_t count); |
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| 140 | |
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| 141 | struct epoll_event; |
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| 142 | extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event); |
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| 143 | |
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| 144 | extern ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out, size_t len, unsigned int flags); |
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| 145 | extern ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags); |
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| 146 | } |
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| 147 | |
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| 148 | //============================================================================================= |
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| 149 | // I/O Interface |
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| 150 | //============================================================================================= |
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| 151 | """ |
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| 152 | |
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| 153 | print(Header.format("A Date")) |
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| 154 | print(Prelude) |
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| 155 | |
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| 156 | import re |
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| 157 | import sys |
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| 158 | class Call: |
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| 159 | def __init__(self, op, signature, body, define=None): |
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| 160 | sig = re.search("(.*) (.*)\((.*)\)", signature) |
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| 161 | if not sig: |
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| 162 | print("OP '{}' has invalid signature {}".format(op, signature), file=sys.stderr) |
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| 163 | sys.exit(1) |
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| 164 | |
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| 165 | self.op = op |
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| 166 | self.ret = sig.group(1) |
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| 167 | self.name = sig.group(2) |
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| 168 | self.params = sig.group(3) |
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| 169 | self.define = define |
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| 170 | self.body = "" |
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| 171 | |
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| 172 | accepted_keys = [ 'ioprio', 'fd', 'off', 'addr2','addr', 'splice_off_in','len', |
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| 173 | 'rw_flags', 'fsync_flags', 'poll_events', 'poll32_events', |
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| 174 | 'sync_range_flags', 'msg_flags', 'timeout_flags', 'accept_flags', |
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| 175 | 'cancel_flags', 'open_flags', 'statx_flags', 'fadvise_advice', |
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| 176 | 'splice_flags', 'buf_index' ,'buf_group' 'personality', |
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| 177 | 'splice_fd_in' ] |
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| 178 | |
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| 179 | for k, v in body.items(): |
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| 180 | if not k in accepted_keys: |
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| 181 | print("OP '{}' has invalid body kew {}".format(op, k), file=sys.stderr) |
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| 182 | sys.exit(1) |
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| 183 | |
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| 184 | self.body += "\n sqe->{key} = {value};".format(key=k, value=v) |
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| 185 | |
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| 186 | |
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| 187 | def args(self): |
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| 188 | param_a = self.params.split(',') |
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| 189 | args_a = [p.replace('*', ' ').split()[-1] for p in param_a] |
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| 190 | for a in args_a: |
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| 191 | if '*' in a: |
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| 192 | print("OP '{}' has invalid * in argument {}".format(self.op, a), file=sys.stderr) |
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| 193 | sys.exit(1) |
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| 194 | |
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| 195 | return ', '.join(args_a) |
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| 196 | |
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| 197 | AsyncTemplate = """inline void async_{name}(io_future_t & future, {params}, int submit_flags, io_cancellation * cancellation, io_context * context) {{ |
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| 198 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_{op}) |
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| 199 | ssize_t res = {name}({args}); |
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| 200 | if (res >= 0) {{ |
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| 201 | fulfil(future, res); |
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| 202 | }} |
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| 203 | else {{ |
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| 204 | fulfil(future, -errno); |
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| 205 | }} |
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| 206 | #else |
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| 207 | // we don't support LINK yet |
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| 208 | if( 0 != (submit_flags & LINK_FLAGS) ) {{ |
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| 209 | errno = ENOTSUP; return -1; |
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| 210 | }} |
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| 211 | |
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| 212 | if( !context ) {{ |
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| 213 | context = __get_io_context(); |
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| 214 | }} |
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| 215 | if(cancellation) {{ |
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| 216 | cancellation->target = (__u64)(uintptr_t)&future; |
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| 217 | }} |
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| 218 | |
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| 219 | __u8 sflags = REGULAR_FLAGS & submit_flags; |
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| 220 | struct __io_data & ring = *context->thrd.ring; |
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| 221 | |
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| 222 | __u32 idx; |
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[7dafb7b] | 223 | struct io_uring_sqe * sqe; |
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| 224 | [(volatile struct io_uring_sqe *) sqe, idx] = __submit_alloc( ring, (__u64)(uintptr_t)&future ); |
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[c402739f] | 225 | |
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| 226 | sqe->opcode = IORING_OP_{op}; |
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[7dafb7b] | 227 | sqe->flags = sflags; |
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| 228 | sqe->ioprio = 0; |
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| 229 | sqe->fd = 0; |
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| 230 | sqe->off = 0; |
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| 231 | sqe->addr = 0; |
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| 232 | sqe->len = 0; |
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| 233 | sqe->accept_flags = 0; |
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| 234 | sqe->__pad2[0] = 0; |
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| 235 | sqe->__pad2[1] = 0; |
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| 236 | sqe->__pad2[2] = 0;{body} |
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| 237 | |
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| 238 | asm volatile("": : :"memory"); |
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[c402739f] | 239 | |
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| 240 | verify( sqe->user_data == (__u64)(uintptr_t)&future ); |
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| 241 | __submit( context, idx ); |
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| 242 | #endif |
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| 243 | }}""" |
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| 244 | |
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| 245 | SyncTemplate = """{ret} cfa_{name}({params}, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {{ |
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| 246 | if( timeout >= 0 ) {{ |
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| 247 | errno = ENOTSUP; |
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| 248 | return -1; |
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| 249 | }} |
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| 250 | io_future_t future; |
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| 251 | |
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| 252 | async_{name}( future, {args}, submit_flags, cancellation, context ); |
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| 253 | |
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| 254 | wait( future ); |
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| 255 | if( future.result < 0 ) {{ |
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| 256 | errno = -future.result; |
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| 257 | return -1; |
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| 258 | }} |
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| 259 | return future.result; |
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| 260 | }}""" |
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| 261 | |
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| 262 | calls = [ |
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| 263 | # CFA_HAVE_IORING_OP_READV |
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| 264 | Call('READV', 'ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', { |
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| 265 | 'fd' : 'fd', |
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| 266 | 'off' : 'offset', |
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| 267 | 'addr': '(__u64)iov', |
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| 268 | 'len' : 'iovcnt', |
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| 269 | }, define = 'CFA_HAVE_PREADV2'), |
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| 270 | # CFA_HAVE_IORING_OP_WRITEV |
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| 271 | Call('WRITEV', 'ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', { |
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| 272 | 'fd' : 'fd', |
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| 273 | 'off' : 'offset', |
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| 274 | 'addr': '(__u64)iov', |
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| 275 | 'len' : 'iovcnt' |
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| 276 | }, define = 'CFA_HAVE_PWRITEV2'), |
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| 277 | # CFA_HAVE_IORING_OP_FSYNC |
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| 278 | Call('FSYNC', 'int fsync(int fd)', { |
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| 279 | 'fd': 'fd' |
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| 280 | }), |
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| 281 | # CFA_HAVE_IORING_OP_EPOLL_CTL |
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| 282 | Call('EPOLL_CTL', 'int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)', { |
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| 283 | 'fd': 'epfd', |
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| 284 | 'addr': 'fd', |
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| 285 | 'len': 'op', |
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| 286 | 'off': '(__u64)event' |
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| 287 | }), |
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| 288 | # CFA_HAVE_IORING_OP_SYNC_FILE_RANGE |
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| 289 | Call('SYNC_FILE_RANGE', 'int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)', { |
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| 290 | 'fd': 'fd', |
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| 291 | 'off': 'offset', |
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| 292 | 'len': 'nbytes', |
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| 293 | 'sync_range_flags': 'flags' |
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| 294 | }), |
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| 295 | # CFA_HAVE_IORING_OP_SENDMSG |
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| 296 | Call('SENDMSG', 'ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags)', { |
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| 297 | 'fd': 'sockfd', |
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| 298 | 'addr': '(__u64)(struct msghdr *)msg', |
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| 299 | 'len': '1', |
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| 300 | 'msg_flags': 'flags' |
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| 301 | }), |
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| 302 | # CFA_HAVE_IORING_OP_RECVMSG |
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| 303 | Call('RECVMSG', 'ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags)', { |
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| 304 | 'fd': 'sockfd', |
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| 305 | 'addr': '(__u64)(struct msghdr *)msg', |
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| 306 | 'len': '1', |
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| 307 | 'msg_flags': 'flags' |
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| 308 | }), |
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| 309 | # CFA_HAVE_IORING_OP_SEND |
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| 310 | Call('SEND', 'ssize_t send(int sockfd, const void *buf, size_t len, int flags)', { |
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| 311 | 'fd': 'sockfd', |
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[4ab3cf9b] | 312 | 'addr': '(__u64)buf', |
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[c402739f] | 313 | 'len': 'len', |
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| 314 | 'msg_flags': 'flags' |
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| 315 | }), |
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| 316 | # CFA_HAVE_IORING_OP_RECV |
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| 317 | Call('RECV', 'ssize_t recv(int sockfd, void *buf, size_t len, int flags)', { |
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| 318 | 'fd': 'sockfd', |
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[4ab3cf9b] | 319 | 'addr': '(__u64)buf', |
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[c402739f] | 320 | 'len': 'len', |
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| 321 | 'msg_flags': 'flags' |
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| 322 | }), |
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| 323 | # CFA_HAVE_IORING_OP_ACCEPT |
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[35fd2c4] | 324 | Call('ACCEPT', 'int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags)', { |
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[c402739f] | 325 | 'fd': 'sockfd', |
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[35fd2c4] | 326 | 'addr': '(__u64)addr', |
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| 327 | 'addr2': '(__u64)addrlen', |
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[c402739f] | 328 | 'accept_flags': 'flags' |
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| 329 | }), |
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| 330 | # CFA_HAVE_IORING_OP_CONNECT |
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| 331 | Call('CONNECT', 'int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen)', { |
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| 332 | 'fd': 'sockfd', |
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[4ab3cf9b] | 333 | 'addr': '(__u64)addr', |
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[c402739f] | 334 | 'off': 'addrlen' |
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| 335 | }), |
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| 336 | # CFA_HAVE_IORING_OP_FALLOCATE |
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| 337 | Call('FALLOCATE', 'int fallocate(int fd, int mode, off_t offset, off_t len)', { |
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| 338 | 'fd': 'fd', |
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| 339 | 'addr': '(__u64)len', |
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| 340 | 'len': 'mode', |
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| 341 | 'off': 'offset' |
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| 342 | }), |
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| 343 | # CFA_HAVE_IORING_OP_FADVISE |
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| 344 | Call('FADVISE', 'int posix_fadvise(int fd, off_t offset, off_t len, int advice)', { |
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| 345 | 'fd': 'fd', |
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[4ab3cf9b] | 346 | 'off': 'offset', |
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[c402739f] | 347 | 'len': 'len', |
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| 348 | 'fadvise_advice': 'advice' |
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| 349 | }), |
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| 350 | # CFA_HAVE_IORING_OP_MADVISE |
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| 351 | Call('MADVISE', 'int madvise(void *addr, size_t length, int advice)', { |
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[eccb14d] | 352 | 'addr': '(__u64)addr', |
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[c402739f] | 353 | 'len': 'length', |
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| 354 | 'fadvise_advice': 'advice' |
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| 355 | }), |
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| 356 | # CFA_HAVE_IORING_OP_OPENAT |
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| 357 | Call('OPENAT', 'int openat(int dirfd, const char *pathname, int flags, mode_t mode)', { |
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| 358 | 'fd': 'dirfd', |
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| 359 | 'addr': '(__u64)pathname', |
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| 360 | 'len': 'mode', |
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| 361 | 'open_flags': 'flags;' |
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| 362 | }), |
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| 363 | # CFA_HAVE_IORING_OP_OPENAT2 |
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| 364 | Call('OPENAT2', 'int openat2(int dirfd, const char *pathname, struct open_how * how, size_t size)', { |
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| 365 | 'fd': 'dirfd', |
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| 366 | 'addr': 'pathname', |
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| 367 | 'len': 'sizeof(*how)', |
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| 368 | 'off': '(__u64)how', |
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| 369 | }, define = 'CFA_HAVE_OPENAT2'), |
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| 370 | # CFA_HAVE_IORING_OP_CLOSE |
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| 371 | Call('CLOSE', 'int close(int fd)', { |
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| 372 | 'fd': 'fd' |
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| 373 | }), |
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| 374 | # CFA_HAVE_IORING_OP_STATX |
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| 375 | Call('STATX', 'int statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf)', { |
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| 376 | 'fd': 'dirfd', |
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| 377 | 'off': '(__u64)statxbuf', |
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| 378 | 'addr': 'pathname', |
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| 379 | 'len': 'mask', |
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| 380 | 'statx_flags': 'flags' |
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| 381 | }, define = 'CFA_HAVE_STATX'), |
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| 382 | # CFA_HAVE_IORING_OP_READ |
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| 383 | Call('READ', 'ssize_t read(int fd, void * buf, size_t count)', { |
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| 384 | 'fd': 'fd', |
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[4ab3cf9b] | 385 | 'addr': '(__u64)buf', |
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[c402739f] | 386 | 'len': 'count' |
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| 387 | }), |
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| 388 | # CFA_HAVE_IORING_OP_WRITE |
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| 389 | Call('WRITE', 'ssize_t write(int fd, void * buf, size_t count)', { |
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| 390 | 'fd': 'fd', |
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[4ab3cf9b] | 391 | 'addr': '(__u64)buf', |
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[c402739f] | 392 | 'len': 'count' |
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| 393 | }), |
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| 394 | # CFA_HAVE_IORING_OP_SPLICE |
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| 395 | Call('SPLICE', 'ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out, size_t len, unsigned int flags)', { |
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| 396 | 'splice_fd_in': 'fd_in', |
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[4ab3cf9b] | 397 | 'splice_off_in': 'off_in ? (__u64)*off_in : (__u64)-1', |
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[c402739f] | 398 | 'fd': 'fd_out', |
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[4ab3cf9b] | 399 | 'off': 'off_out ? (__u64)*off_out : (__u64)-1', |
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[c402739f] | 400 | 'len': 'len', |
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| 401 | 'splice_flags': 'flags' |
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| 402 | }), |
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| 403 | # CFA_HAVE_IORING_OP_TEE |
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| 404 | Call('TEE', 'ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags)', { |
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| 405 | 'splice_fd_in': 'fd_in', |
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| 406 | 'fd': 'fd_out', |
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| 407 | 'len': 'len', |
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| 408 | 'splice_flags': 'flags' |
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| 409 | }) |
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| 410 | ] |
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| 411 | |
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| 412 | print("//----------") |
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| 413 | print("// synchronous calls") |
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| 414 | for c in calls: |
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| 415 | if c.define: |
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| 416 | print("""#if defined({define}) |
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| 417 | {ret} cfa_{name}({params}, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context); |
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| 418 | #endif""".format(define=c.define,ret=c.ret, name=c.name, params=c.params)) |
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| 419 | else: |
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| 420 | print("{ret} cfa_{name}({params}, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context);" |
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| 421 | .format(ret=c.ret, name=c.name, params=c.params)) |
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| 422 | |
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| 423 | print("\n//----------") |
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| 424 | print("// asynchronous calls") |
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| 425 | for c in calls: |
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| 426 | if c.define: |
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| 427 | print("""#if defined({define}) |
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| 428 | void async_{name}(io_future_t & future, {params}, int submit_flags, io_cancellation * cancellation, io_context * context); |
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| 429 | #endif""".format(define=c.define,name=c.name, params=c.params)) |
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| 430 | else: |
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| 431 | print("void async_{name}(io_future_t & future, {params}, int submit_flags, io_cancellation * cancellation, io_context * context);" |
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| 432 | .format(name=c.name, params=c.params)) |
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| 433 | print("\n") |
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| 434 | |
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| 435 | for c in calls: |
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| 436 | print("//-----------------------------------------------------------------------------") |
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| 437 | print("// {}".format(c.name)) |
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| 438 | Async = AsyncTemplate.format( |
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| 439 | name = c.name, |
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| 440 | ret = c.ret, |
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| 441 | params = c.params, |
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| 442 | args = c.args(), |
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| 443 | op = c.op, |
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| 444 | body = c.body |
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| 445 | |
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| 446 | ) |
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| 447 | Sync = SyncTemplate.format( |
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| 448 | name = c.name, |
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| 449 | ret = c.ret, |
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| 450 | params = c.params, |
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| 451 | args = c.args() |
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| 452 | ) |
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| 453 | |
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| 454 | if c.define: |
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| 455 | print("""#if defined({}) |
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| 456 | //---------- |
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| 457 | // asynchronous call |
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| 458 | {} |
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| 459 | |
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| 460 | //---------- |
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| 461 | // synchronous call |
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| 462 | {} |
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| 463 | #endif |
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| 464 | """.format(c.define, "\n\t".join( Async.splitlines() ), "\n\t".join( Sync.splitlines() ))) |
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| 465 | else : |
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| 466 | print("""//---------- |
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| 467 | // asynchronous call |
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| 468 | {} |
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| 469 | |
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| 470 | //---------- |
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| 471 | // synchronous call |
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| 472 | {} |
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| 473 | """.format(Async, Sync)) |
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| 474 | |
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| 475 | print(""" |
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[ece0e80] | 476 | //----------------------------------------------------------------------------- |
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| 477 | bool cancel(io_cancellation & this) { |
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| 478 | #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_ASYNC_CANCEL) |
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| 479 | return false; |
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| 480 | #else |
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| 481 | io_future_t future; |
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| 482 | |
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| 483 | io_context * context = __get_io_context(); |
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| 484 | |
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| 485 | __u8 sflags = 0; |
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| 486 | struct __io_data & ring = *context->thrd.ring; |
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| 487 | |
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| 488 | __u32 idx; |
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[426f60c] | 489 | volatile struct io_uring_sqe * sqe; |
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[ece0e80] | 490 | [sqe, idx] = __submit_alloc( ring, (__u64)(uintptr_t)&future ); |
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| 491 | |
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| 492 | sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0; |
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| 493 | sqe->opcode = IORING_OP_ASYNC_CANCEL; |
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| 494 | sqe->flags = sflags; |
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| 495 | sqe->addr = this.target; |
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| 496 | |
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| 497 | verify( sqe->user_data == (__u64)(uintptr_t)&future ); |
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| 498 | __submit( context, idx ); |
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| 499 | |
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| 500 | wait(future); |
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| 501 | |
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| 502 | if( future.result == 0 ) return true; // Entry found |
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| 503 | if( future.result == -EALREADY) return true; // Entry found but in progress |
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| 504 | if( future.result == -ENOENT ) return false; // Entry not found |
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| 505 | return false; |
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| 506 | #endif |
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| 507 | } |
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| 508 | |
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[c402739f] | 509 | //----------------------------------------------------------------------------- |
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| 510 | // Check if a function is has asynchronous |
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| 511 | bool has_user_level_blocking( fptr_t func ) { |
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| 512 | #if defined(CFA_HAVE_LINUX_IO_URING_H)""") |
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| 513 | |
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| 514 | for c in calls: |
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| 515 | if c.define: |
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| 516 | print(""" #if defined({define}) |
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| 517 | if( /*func == (fptr_t)preadv2 || */ |
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| 518 | func == (fptr_t)cfa_{name} || |
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| 519 | func == (fptr_t)async_{name} ) {{ |
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| 520 | #if defined(CFA_HAVE_IORING_OP_{op}) |
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| 521 | return true; |
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| 522 | #else |
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| 523 | return false; |
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| 524 | #endif |
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| 525 | }} |
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| 526 | #endif""".format(define=c.define, name=c.name, op=c.op)) |
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| 527 | else: |
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| 528 | print(""" if( /*func == (fptr_t)preadv2 || */ |
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| 529 | func == (fptr_t)cfa_{name} || |
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| 530 | func == (fptr_t)async_{name} ) {{ |
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| 531 | #if defined(CFA_HAVE_IORING_OP_{op}) |
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| 532 | return true; |
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| 533 | #else |
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| 534 | return false; |
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| 535 | #endif |
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| 536 | }}""".format(name=c.name, op=c.op)) |
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| 537 | |
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| 538 | print(""" #endif |
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| 539 | |
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| 540 | return false; |
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| 541 | }""") |
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