source: libcfa/src/concurrency/io/call.cfa.in@ 6cb7a92

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 6cb7a92 was ec19b21, checked in by Thierry Delisle <tdelisle@…>, 5 years ago

Fixed compile for older versions of io_uring
  • Property mode set to 100644
File size: 15.3 KB
Line 
1#!python3
2#
3# Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
4#
5# The contents of this file are covered under the licence agreement in the
6# file "LICENCE" distributed with Cforall.
7#
8# call.cfa.in -- Python script to generate io/call.cfa
9#
10# Author : Thierry Delisle
11# Created On : Fri Sep 11 12:41:16 2020
12# Last Modified By :
13# Last Modified On :
14# Update Count :
15#
16
17Header = """//
18// Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
19//
20// The contents of this file are covered under the licence agreement in the
21// file "LICENCE" distributed with Cforall.
22//
23// call.cfa -- Api for cforall
24//
25// Author : Generated from call.cfa.in
26// Created On : {}
27//
28
29"""
30
31Prelude = """#define __cforall_thread__
32
33#include "bits/defs.hfa"
34#include "kernel.hfa"
35#include "io/types.hfa"
36
37//=============================================================================================
38// I/O uring backend
39//=============================================================================================
40
41#if defined(CFA_HAVE_LINUX_IO_URING_H)
42 #include <assert.h>
43 #include <stdint.h>
44 #include <errno.h>
45 #include <linux/io_uring.h>
46
47 #include "kernel/fwd.hfa"
48
49 static const __u8 REGULAR_FLAGS = 0
50 #if defined(CFA_HAVE_IOSQE_FIXED_FILE)
51 | IOSQE_FIXED_FILE
52 #endif
53 #if defined(CFA_HAVE_IOSQE_IO_DRAIN)
54 | IOSQE_IO_DRAIN
55 #endif
56 #if defined(CFA_HAVE_IOSQE_ASYNC)
57 | IOSQE_ASYNC
58 #endif
59 ;
60
61 static const __u32 LINK_FLAGS = 0
62 #if defined(CFA_HAVE_IOSQE_IO_LINK)
63 | IOSQE_IO_LINK
64 #endif
65 #if defined(CFA_HAVE_IOSQE_IO_HARDLINK)
66 | IOSQE_IO_HARDLINK
67 #endif
68 ;
69
70 static const __u32 SPLICE_FLAGS = 0
71 #if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
72 | SPLICE_F_FD_IN_FIXED
73 #endif
74 ;
75
76 extern [* volatile struct io_uring_sqe, __u32] __submit_alloc( struct __io_data & ring, __u64 data );
77 extern void __submit( struct io_context * ctx, __u32 idx ) __attribute__((nonnull (1)));
78
79 static inline io_context * __get_io_context( void ) {
80 cluster * cltr = active_cluster();
81
82 /* paranoid */ verifyf( cltr, "No active cluster for io operation\\n");
83 assertf( cltr->io.cnt > 0, "Cluster %p has no default io contexts and no context was specified\\n", cltr );
84
85 /* paranoid */ verifyf( cltr->io.ctxs, "default io contexts for cluster %p are missing\\n", cltr);
86 return &cltr->io.ctxs[ thread_rand() % cltr->io.cnt ];
87 }
88#endif
89
90//=============================================================================================
91// I/O Forwards
92//=============================================================================================
93#include <time.hfa>
94
95// Some forward declarations
96#include <errno.h>
97#include <unistd.h>
98
99extern "C" {
100 #include <sys/types.h>
101 #include <sys/socket.h>
102 #include <sys/syscall.h>
103
104#if defined(CFA_HAVE_PREADV2)
105 struct iovec;
106 extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
107#endif
108#if defined(CFA_HAVE_PWRITEV2)
109 struct iovec;
110 extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
111#endif
112
113 extern int fsync(int fd);
114
115 #if __OFF_T_MATCHES_OFF64_T
116 typedef __off64_t off_t;
117 #else
118 typedef __off_t off_t;
119 #endif
120 typedef __off64_t off64_t;
121 extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags);
122
123 struct msghdr;
124 struct sockaddr;
125 extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
126 extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
127 extern ssize_t send(int sockfd, const void *buf, size_t len, int flags);
128 extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
129 extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
130 extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
131
132 extern int fallocate(int fd, int mode, off_t offset, off_t len);
133 extern int posix_fadvise(int fd, off_t offset, off_t len, int advice);
134 extern int madvise(void *addr, size_t length, int advice);
135
136 extern int openat(int dirfd, const char *pathname, int flags, mode_t mode);
137 extern int close(int fd);
138
139 extern ssize_t read (int fd, void *buf, size_t count);
140
141 struct epoll_event;
142 extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);
143
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);
145 extern ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags);
146}
147
148//=============================================================================================
149// I/O Interface
150//=============================================================================================
151"""
152
153print(Header.format("A Date"))
154print(Prelude)
155
156import re
157import sys
158class Call:
159 def __init__(self, op, signature, body, define=None):
160 sig = re.search("(.*) (.*)\((.*)\)", signature)
161 if not sig:
162 print("OP '{}' has invalid signature {}".format(op, signature), file=sys.stderr)
163 sys.exit(1)
164
165 self.op = op
166 self.ret = sig.group(1)
167 self.name = sig.group(2)
168 self.params = sig.group(3)
169 self.define = define
170 self.body = ""
171
172 accepted_keys = [ 'ioprio', 'fd', 'off', 'addr2','addr', 'splice_off_in','len',
173 'rw_flags', 'fsync_flags', 'poll_events', 'poll32_events',
174 'sync_range_flags', 'msg_flags', 'timeout_flags', 'accept_flags',
175 'cancel_flags', 'open_flags', 'statx_flags', 'fadvise_advice',
176 'splice_flags', 'buf_index' ,'buf_group' 'personality',
177 'splice_fd_in' ]
178
179 for k, v in body.items():
180 if not k in accepted_keys:
181 print("OP '{}' has invalid body kew {}".format(op, k), file=sys.stderr)
182 sys.exit(1)
183
184 self.body += "\n sqe->{key} = {value};".format(key=k, value=v)
185
186
187 def args(self):
188 param_a = self.params.split(',')
189 args_a = [p.replace('*', ' ').split()[-1] for p in param_a]
190 for a in args_a:
191 if '*' in a:
192 print("OP '{}' has invalid * in argument {}".format(self.op, a), file=sys.stderr)
193 sys.exit(1)
194
195 return ', '.join(args_a)
196
197AsyncTemplate = """inline void async_{name}(io_future_t & future, {params}, int submit_flags, io_cancellation * cancellation, io_context * context) {{
198 #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_{op})
199 ssize_t res = {name}({args});
200 if (res >= 0) {{
201 fulfil(future, res);
202 }}
203 else {{
204 fulfil(future, -errno);
205 }}
206 #else
207 // we don't support LINK yet
208 if( 0 != (submit_flags & LINK_FLAGS) ) {{
209 errno = ENOTSUP; return -1;
210 }}
211
212 if( !context ) {{
213 context = __get_io_context();
214 }}
215 if(cancellation) {{
216 cancellation->target = (__u64)(uintptr_t)&future;
217 }}
218
219 __u8 sflags = REGULAR_FLAGS & submit_flags;
220 struct __io_data & ring = *context->thrd.ring;
221
222 __u32 idx;
223 struct io_uring_sqe * sqe;
224 [(volatile struct io_uring_sqe *) sqe, idx] = __submit_alloc( ring, (__u64)(uintptr_t)&future );
225
226 sqe->opcode = IORING_OP_{op};
227 sqe->flags = sflags;
228 sqe->ioprio = 0;
229 sqe->fd = 0;
230 sqe->off = 0;
231 sqe->addr = 0;
232 sqe->len = 0;
233 sqe->fsync_flags = 0;
234 sqe->__pad2[0] = 0;
235 sqe->__pad2[1] = 0;
236 sqe->__pad2[2] = 0;{body}
237
238 asm volatile("": : :"memory");
239
240 verify( sqe->user_data == (__u64)(uintptr_t)&future );
241 __submit( context, idx );
242 #endif
243}}"""
244
245SyncTemplate = """{ret} cfa_{name}({params}, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {{
246 if( timeout >= 0 ) {{
247 errno = ENOTSUP;
248 return -1;
249 }}
250 io_future_t future;
251
252 async_{name}( future, {args}, submit_flags, cancellation, context );
253
254 wait( future );
255 if( future.result < 0 ) {{
256 errno = -future.result;
257 return -1;
258 }}
259 return future.result;
260}}"""
261
262calls = [
263 # CFA_HAVE_IORING_OP_READV
264 Call('READV', 'ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', {
265 'fd' : 'fd',
266 'off' : 'offset',
267 'addr': '(__u64)iov',
268 'len' : 'iovcnt',
269 }, define = 'CFA_HAVE_PREADV2'),
270 # CFA_HAVE_IORING_OP_WRITEV
271 Call('WRITEV', 'ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags)', {
272 'fd' : 'fd',
273 'off' : 'offset',
274 'addr': '(__u64)iov',
275 'len' : 'iovcnt'
276 }, define = 'CFA_HAVE_PWRITEV2'),
277 # CFA_HAVE_IORING_OP_FSYNC
278 Call('FSYNC', 'int fsync(int fd)', {
279 'fd': 'fd'
280 }),
281 # CFA_HAVE_IORING_OP_EPOLL_CTL
282 Call('EPOLL_CTL', 'int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)', {
283 'fd': 'epfd',
284 'addr': 'fd',
285 'len': 'op',
286 'off': '(__u64)event'
287 }),
288 # CFA_HAVE_IORING_OP_SYNC_FILE_RANGE
289 Call('SYNC_FILE_RANGE', 'int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)', {
290 'fd': 'fd',
291 'off': 'offset',
292 'len': 'nbytes',
293 'sync_range_flags': 'flags'
294 }),
295 # CFA_HAVE_IORING_OP_SENDMSG
296 Call('SENDMSG', 'ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags)', {
297 'fd': 'sockfd',
298 'addr': '(__u64)(struct msghdr *)msg',
299 'len': '1',
300 'msg_flags': 'flags'
301 }),
302 # CFA_HAVE_IORING_OP_RECVMSG
303 Call('RECVMSG', 'ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags)', {
304 'fd': 'sockfd',
305 'addr': '(__u64)(struct msghdr *)msg',
306 'len': '1',
307 'msg_flags': 'flags'
308 }),
309 # CFA_HAVE_IORING_OP_SEND
310 Call('SEND', 'ssize_t send(int sockfd, const void *buf, size_t len, int flags)', {
311 'fd': 'sockfd',
312 'addr': '(__u64)buf',
313 'len': 'len',
314 'msg_flags': 'flags'
315 }),
316 # CFA_HAVE_IORING_OP_RECV
317 Call('RECV', 'ssize_t recv(int sockfd, void *buf, size_t len, int flags)', {
318 'fd': 'sockfd',
319 'addr': '(__u64)buf',
320 'len': 'len',
321 'msg_flags': 'flags'
322 }),
323 # CFA_HAVE_IORING_OP_ACCEPT
324 Call('ACCEPT', 'int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags)', {
325 'fd': 'sockfd',
326 'addr': '(__u64)addr',
327 'addr2': '(__u64)addrlen',
328 'accept_flags': 'flags'
329 }),
330 # CFA_HAVE_IORING_OP_CONNECT
331 Call('CONNECT', 'int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen)', {
332 'fd': 'sockfd',
333 'addr': '(__u64)addr',
334 'off': 'addrlen'
335 }),
336 # CFA_HAVE_IORING_OP_FALLOCATE
337 Call('FALLOCATE', 'int fallocate(int fd, int mode, off_t offset, off_t len)', {
338 'fd': 'fd',
339 'addr': '(__u64)len',
340 'len': 'mode',
341 'off': 'offset'
342 }),
343 # CFA_HAVE_IORING_OP_FADVISE
344 Call('FADVISE', 'int posix_fadvise(int fd, off_t offset, off_t len, int advice)', {
345 'fd': 'fd',
346 'off': 'offset',
347 'len': 'len',
348 'fadvise_advice': 'advice'
349 }),
350 # CFA_HAVE_IORING_OP_MADVISE
351 Call('MADVISE', 'int madvise(void *addr, size_t length, int advice)', {
352 'addr': '(__u64)addr',
353 'len': 'length',
354 'fadvise_advice': 'advice'
355 }),
356 # CFA_HAVE_IORING_OP_OPENAT
357 Call('OPENAT', 'int openat(int dirfd, const char *pathname, int flags, mode_t mode)', {
358 'fd': 'dirfd',
359 'addr': '(__u64)pathname',
360 'len': 'mode',
361 'open_flags': 'flags;'
362 }),
363 # CFA_HAVE_IORING_OP_OPENAT2
364 Call('OPENAT2', 'int openat2(int dirfd, const char *pathname, struct open_how * how, size_t size)', {
365 'fd': 'dirfd',
366 'addr': 'pathname',
367 'len': 'sizeof(*how)',
368 'off': '(__u64)how',
369 }, define = 'CFA_HAVE_OPENAT2'),
370 # CFA_HAVE_IORING_OP_CLOSE
371 Call('CLOSE', 'int close(int fd)', {
372 'fd': 'fd'
373 }),
374 # CFA_HAVE_IORING_OP_STATX
375 Call('STATX', 'int statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf)', {
376 'fd': 'dirfd',
377 'off': '(__u64)statxbuf',
378 'addr': 'pathname',
379 'len': 'mask',
380 'statx_flags': 'flags'
381 }, define = 'CFA_HAVE_STATX'),
382 # CFA_HAVE_IORING_OP_READ
383 Call('READ', 'ssize_t read(int fd, void * buf, size_t count)', {
384 'fd': 'fd',
385 'addr': '(__u64)buf',
386 'len': 'count'
387 }),
388 # CFA_HAVE_IORING_OP_WRITE
389 Call('WRITE', 'ssize_t write(int fd, void * buf, size_t count)', {
390 'fd': 'fd',
391 'addr': '(__u64)buf',
392 'len': 'count'
393 }),
394 # CFA_HAVE_IORING_OP_SPLICE
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)', {
396 'splice_fd_in': 'fd_in',
397 'splice_off_in': 'off_in ? (__u64)*off_in : (__u64)-1',
398 'fd': 'fd_out',
399 'off': 'off_out ? (__u64)*off_out : (__u64)-1',
400 'len': 'len',
401 'splice_flags': 'flags'
402 }),
403 # CFA_HAVE_IORING_OP_TEE
404 Call('TEE', 'ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags)', {
405 'splice_fd_in': 'fd_in',
406 'fd': 'fd_out',
407 'len': 'len',
408 'splice_flags': 'flags'
409 })
410]
411
412print("//----------")
413print("// synchronous calls")
414for c in calls:
415 if c.define:
416 print("""#if defined({define})
417 {ret} cfa_{name}({params}, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context);
418#endif""".format(define=c.define,ret=c.ret, name=c.name, params=c.params))
419 else:
420 print("{ret} cfa_{name}({params}, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context);"
421 .format(ret=c.ret, name=c.name, params=c.params))
422
423print("\n//----------")
424print("// asynchronous calls")
425for c in calls:
426 if c.define:
427 print("""#if defined({define})
428 void async_{name}(io_future_t & future, {params}, int submit_flags, io_cancellation * cancellation, io_context * context);
429#endif""".format(define=c.define,name=c.name, params=c.params))
430 else:
431 print("void async_{name}(io_future_t & future, {params}, int submit_flags, io_cancellation * cancellation, io_context * context);"
432 .format(name=c.name, params=c.params))
433print("\n")
434
435for c in calls:
436 print("//-----------------------------------------------------------------------------")
437 print("// {}".format(c.name))
438 Async = AsyncTemplate.format(
439 name = c.name,
440 ret = c.ret,
441 params = c.params,
442 args = c.args(),
443 op = c.op,
444 body = c.body
445
446 )
447 Sync = SyncTemplate.format(
448 name = c.name,
449 ret = c.ret,
450 params = c.params,
451 args = c.args()
452 )
453
454 if c.define:
455 print("""#if defined({})
456 //----------
457 // asynchronous call
458 {}
459
460 //----------
461 // synchronous call
462 {}
463#endif
464""".format(c.define, "\n\t".join( Async.splitlines() ), "\n\t".join( Sync.splitlines() )))
465 else :
466 print("""//----------
467// asynchronous call
468{}
469
470//----------
471// synchronous call
472{}
473""".format(Async, Sync))
474
475print("""
476//-----------------------------------------------------------------------------
477bool cancel(io_cancellation & this) {
478 #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_ASYNC_CANCEL)
479 return false;
480 #else
481 io_future_t future;
482
483 io_context * context = __get_io_context();
484
485 __u8 sflags = 0;
486 struct __io_data & ring = *context->thrd.ring;
487
488 __u32 idx;
489 volatile struct io_uring_sqe * sqe;
490 [sqe, idx] = __submit_alloc( ring, (__u64)(uintptr_t)&future );
491
492 sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0;
493 sqe->opcode = IORING_OP_ASYNC_CANCEL;
494 sqe->flags = sflags;
495 sqe->addr = this.target;
496
497 verify( sqe->user_data == (__u64)(uintptr_t)&future );
498 __submit( context, idx );
499
500 wait(future);
501
502 if( future.result == 0 ) return true; // Entry found
503 if( future.result == -EALREADY) return true; // Entry found but in progress
504 if( future.result == -ENOENT ) return false; // Entry not found
505 return false;
506 #endif
507}
508
509//-----------------------------------------------------------------------------
510// Check if a function is has asynchronous
511bool has_user_level_blocking( fptr_t func ) {
512 #if defined(CFA_HAVE_LINUX_IO_URING_H)""")
513
514for c in calls:
515 if c.define:
516 print(""" #if defined({define})
517 if( /*func == (fptr_t)preadv2 || */
518 func == (fptr_t)cfa_{name} ||
519 func == (fptr_t)async_{name} ) {{
520 #if defined(CFA_HAVE_IORING_OP_{op})
521 return true;
522 #else
523 return false;
524 #endif
525 }}
526 #endif""".format(define=c.define, name=c.name, op=c.op))
527 else:
528 print(""" if( /*func == (fptr_t)preadv2 || */
529 func == (fptr_t)cfa_{name} ||
530 func == (fptr_t)async_{name} ) {{
531 #if defined(CFA_HAVE_IORING_OP_{op})
532 return true;
533 #else
534 return false;
535 #endif
536 }}""".format(name=c.name, op=c.op))
537
538print(""" #endif
539
540 return false;
541}""")
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