source: libcfa/src/concurrency/io/call.cfa.in@ d60a4c2

Last change on this file since d60a4c2 was 454aab2, checked in by Peter A. Buhr <pabuhr@…>, 8 months ago

update io_uring casts to prevent 32-bit warning messages about wrong sized pointer to inter conversion
  • Property mode set to 100644
File size: 13.5 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 <unistd.h>
34#include <errno.h>
35#include <sys/socket.h>
36#include <time.hfa>
37
38#include "bits/defs.hfa"
39#include "kernel.hfa"
40#include "io/types.hfa"
41#include "stats.hfa"
42
43//=============================================================================================
44// I/O uring backend
45//=============================================================================================
46
47#if defined(CFA_HAVE_LINUX_IO_URING_H)
48 #include <assert.h>
49 #include <stdint.h>
50 #include <linux/io_uring.h>
51 #include "kernel/fwd.hfa"
52
53 static const __u8 REGULAR_FLAGS = 0
54 #if defined(CFA_HAVE_IOSQE_FIXED_FILE)
55 | IOSQE_FIXED_FILE
56 #endif
57 #if defined(CFA_HAVE_IOSQE_IO_DRAIN)
58 | IOSQE_IO_DRAIN
59 #endif
60 #if defined(CFA_HAVE_IOSQE_IO_LINK)
61 | IOSQE_IO_LINK
62 #endif
63 #if defined(CFA_HAVE_IOSQE_IO_HARDLINK)
64 | IOSQE_IO_HARDLINK
65 #endif
66 #if defined(CFA_HAVE_IOSQE_ASYNC)
67 | IOSQE_ASYNC
68 #endif
69 #if defined(CFA_HAVE_IOSQE_BUFFER_SELECTED)
70 | IOSQE_BUFFER_SELECTED
71 #endif
72 ;
73
74 static const __u32 SPLICE_FLAGS = 0
75 #if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
76 | SPLICE_F_FD_IN_FIXED
77 #endif
78 ;
79
80 extern struct io_context$ * cfa_io_allocate(struct io_uring_sqe * out_sqes[], __u32 out_idxs[], __u32 want) __attribute__((nonnull (1,2)));
81 extern void cfa_io_submit( struct io_context$ * in_ctx, __u32 in_idxs[], __u32 have, bool lazy ) __attribute__((nonnull (1,2)));
82#endif
83
84//=============================================================================================
85// I/O Forwards
86//=============================================================================================
87
88extern "C" {
89#if defined(CFA_HAVE_PREADV2)
90 struct iovec;
91 extern ssize_t preadv2 (int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags);
92#endif
93#if defined(CFA_HAVE_PWRITEV2)
94 struct iovec;
95 extern ssize_t pwritev2(int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags);
96#endif
97
98 extern int fsync(int fd);
99
100 #if __OFF_T_MATCHES_OFF64_T
101 typedef __off64_t off_t;
102 #else
103 typedef __off_t off_t;
104 #endif
105 typedef __off64_t off64_t;
106 extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags);
107
108 struct msghdr;
109 struct sockaddr;
110 extern ssize_t sendmsg(int sockfd, const struct msghdr * msg, int flags);
111 extern ssize_t recvmsg(int sockfd, struct msghdr * msg, int flags);
112 extern ssize_t send(int sockfd, const void * buf, size_t len, int flags);
113 extern ssize_t recv(int sockfd, void * buf, size_t len, int flags);
114
115 extern int fallocate(int fd, int mode, off_t offset, off_t len);
116 extern int posix_fadvise(int fd, off_t offset, off_t len, int advice);
117 extern int madvise(void * addr, size_t length, int advice);
118
119 extern int openat(int dirfd, const char * pathname, int flags, mode_t mode);
120 extern int close(int fd);
121
122 extern ssize_t read (int fd, void * buf, size_t count);
123
124 struct epoll_event;
125 extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event * event);
126
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);
128 extern ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags);
129}
130
131//=============================================================================================
132// I/O Interface
133//=============================================================================================
134#pragma GCC visibility push(default)
135"""
136
137print(Header.format("A Date"))
138print(Prelude)
139
140import re
141import sys
142class Call:
143 def __init__(self, op, signature, body, define=None):
144 sig = re.search("(.*) (.*)\((.*)\)", signature)
145 if not sig:
146 print("OP '{}' has invalid signature {}".format(op, signature), file=sys.stderr)
147 sys.exit(1)
148
149 self.op = op
150 self.ret = sig.group(1)
151 self.name = sig.group(2)
152 self.params = sig.group(3)
153 self.define = define
154 self.body = ""
155
156 accepted_keys = [ 'ioprio', 'fd', 'off', 'addr2','addr', 'splice_off_in','len',
157 'rw_flags', 'fsync_flags', 'poll_events', 'poll32_events',
158 'sync_range_flags', 'msg_flags', 'timeout_flags', 'accept_flags',
159 'cancel_flags', 'open_flags', 'statx_flags', 'fadvise_advice',
160 'splice_flags', 'buf_index' ,'buf_group' 'personality',
161 'splice_fd_in' ]
162
163 for k, v in body.items():
164 if not k in accepted_keys:
165 print("OP '{}' has invalid body kew {}".format(op, k), file=sys.stderr)
166 sys.exit(1)
167
168 self.body += "\n sqe->{key} = {value};".format(key=k, value=v)
169
170
171 def args(self):
172 param_a = self.params.split(',')
173 args_a = [p.replace('*', ' ').split()[-1] for p in param_a]
174 for a in args_a:
175 if '*' in a:
176 print("OP '{}' has invalid * in argument {}".format(self.op, a), file=sys.stderr)
177 sys.exit(1)
178
179 return ', '.join(args_a)
180
181AsyncTemplate = """inline void async_{name}(io_future_t & future, {params}, __u64 submit_flags) {{
182 #if !defined(CFA_HAVE_LINUX_IO_URING_H) || !defined(CFA_HAVE_IORING_OP_{op})
183 ssize_t res = {name}({args});
184 if (res >= 0) {{
185 fulfil(future, res);
186 }}
187 else {{
188 fulfil(future, -errno);
189 }}
190 #else
191 __u8 sflags = REGULAR_FLAGS & submit_flags;
192 __u32 idx;
193 struct io_uring_sqe * sqe;
194 struct io_context$ * ctx = cfa_io_allocate( &sqe, &idx, 1 );
195
196 memset(sqe, 0, sizeof(*sqe));
197 sqe->opcode = IORING_OP_{op};
198 sqe->flags = sflags;
199 sqe->user_data = (uintptr_t)&future;
200 {body}
201
202 asm volatile("": : :"memory");
203
204 verify( sqe->user_data == (uintptr_t)&future );
205 cfa_io_submit( ctx, &idx, 1, 0 != (submit_flags & CFA_IO_LAZY) );
206 #endif
207}}"""
208
209SyncTemplate = """{ret} cfa_{name}({params}, __u64 submit_flags) {{
210 io_future_t future;
211
212 async_{name}( future, {args}, submit_flags );
213
214 __attribute__((unused)) bool parked;
215 parked = wait( future );
216#if defined(CFA_HAVE_LINUX_IO_URING_H)
217 __STATS__(false, if(!parked) io.submit.nblk += 1; )
218#endif
219 if( future.result < 0 ) {{
220 errno = -future.result;
221 return -1;
222 }}
223 return future.result;
224}}"""
225
226calls = [
227 # CFA_HAVE_IORING_OP_READV
228 Call('READV', 'ssize_t preadv2(int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags)', {
229 'fd' : 'fd',
230 'addr': '(uintptr_t)iov',
231 'len' : 'iovcnt',
232 'off' : 'offset',
233 'rw_flags' : 'flags'
234 }, define = 'CFA_HAVE_PREADV2'),
235 # CFA_HAVE_IORING_OP_WRITEV
236 Call('WRITEV', 'ssize_t pwritev2(int fd, const struct iovec * iov, int iovcnt, off_t offset, int flags)', {
237 'fd' : 'fd',
238 'addr': '(uintptr_t)iov',
239 'len' : 'iovcnt',
240 'off' : 'offset',
241 'rw_flags' : 'flags'
242 }, define = 'CFA_HAVE_PWRITEV2'),
243 # CFA_HAVE_IORING_OP_FSYNC
244 Call('FSYNC', 'int fsync(int fd)', {
245 'fd': 'fd'
246 }),
247 # CFA_HAVE_IORING_OP_EPOLL_CTL
248 Call('EPOLL_CTL', 'int epoll_ctl(int epfd, int op, int fd, struct epoll_event * event)', {
249 'fd': 'epfd',
250 'len': 'op',
251 'addr': 'fd',
252 'off': '(typeof(sqe->off))event'
253 }),
254 # CFA_HAVE_IORING_OP_SYNC_FILE_RANGE
255 Call('SYNC_FILE_RANGE', 'int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)', {
256 'fd': 'fd',
257 'off': 'offset',
258 'len': 'nbytes',
259 'sync_range_flags': 'flags'
260 }),
261 # CFA_HAVE_IORING_OP_SENDMSG
262 Call('SENDMSG', 'ssize_t sendmsg(int sockfd, const struct msghdr * msg, int flags)', {
263 'fd': 'sockfd',
264 'addr': '(uintptr_t)(struct msghdr *)msg',
265 'len': '1',
266 'msg_flags': 'flags'
267 }),
268 # CFA_HAVE_IORING_OP_RECVMSG
269 Call('RECVMSG', 'ssize_t recvmsg(int sockfd, struct msghdr * msg, int flags)', {
270 'fd': 'sockfd',
271 'addr': '(uintptr_t)(struct msghdr *)msg',
272 'len': '1',
273 'msg_flags': 'flags'
274 }),
275 # CFA_HAVE_IORING_OP_SEND
276 Call('SEND', 'ssize_t send(int sockfd, const void * buf, size_t len, int flags)', {
277 'fd': 'sockfd',
278 'addr': '(uintptr_t)buf',
279 'len': 'len',
280 'msg_flags': 'flags'
281 }),
282 # CFA_HAVE_IORING_OP_RECV
283 Call('RECV', 'ssize_t recv(int sockfd, void * buf, size_t len, int flags)', {
284 'fd': 'sockfd',
285 'addr': '(uintptr_t)buf',
286 'len': 'len',
287 'msg_flags': 'flags'
288 }),
289 # CFA_HAVE_IORING_OP_ACCEPT
290 Call('ACCEPT', 'int accept4(int sockfd, __SOCKADDR_ARG addr, socklen_t * restrict addrlen, int flags)', {
291 'fd': 'sockfd',
292 'addr': '(uintptr_t)&addr',
293 'addr2': '(typeof(sqe->addr2))addrlen',
294 'accept_flags': 'flags'
295 }),
296 # CFA_HAVE_IORING_OP_CONNECT
297 Call('CONNECT', 'int connect(int sockfd, __CONST_SOCKADDR_ARG addr, socklen_t addrlen)', {
298 'fd': 'sockfd',
299 'addr': '(uintptr_t)&addr',
300 'off': 'addrlen'
301 }),
302 # CFA_HAVE_IORING_OP_FALLOCATE
303 Call('FALLOCATE', 'int fallocate(int fd, int mode, off_t offset, off_t len)', {
304 'fd': 'fd',
305 'len': 'mode',
306 'off': 'offset',
307 'addr': 'len'
308 }),
309 # CFA_HAVE_IORING_OP_FADVISE
310 Call('FADVISE', 'int posix_fadvise(int fd, off_t offset, off_t len, int advice)', {
311 'fd': 'fd',
312 'off': 'offset',
313 'len': 'len',
314 'fadvise_advice': 'advice'
315 }),
316 # CFA_HAVE_IORING_OP_MADVISE
317 Call('MADVISE', 'int madvise(void * addr, size_t length, int advice)', {
318 'addr': '(uintptr_t)addr',
319 'len': 'length',
320 'fadvise_advice': 'advice'
321 }),
322 # CFA_HAVE_IORING_OP_OPENAT
323 Call('OPENAT', 'int openat(int dirfd, const char * pathname, int flags, mode_t mode)', {
324 'fd': 'dirfd',
325 'addr': '(uintptr_t)pathname',
326 'open_flags': 'flags;',
327 'len': 'mode'
328 }),
329 # CFA_HAVE_IORING_OP_OPENAT2
330 Call('OPENAT2', 'int openat2(int dirfd, const char * pathname, struct open_how * how, size_t size)', {
331 'fd': 'dirfd',
332 'addr': '(uintptr_t)pathname',
333 'off': '(typeof(sqe->off))how',
334 'len': 'sizeof(*how)'
335 }, define = 'CFA_HAVE_OPENAT2'),
336 # CFA_HAVE_IORING_OP_CLOSE
337 Call('CLOSE', 'int close(int fd)', {
338 'fd': 'fd'
339 }),
340 # CFA_HAVE_IORING_OP_STATX
341 Call('STATX', 'int statx(int dirfd, const char * pathname, int flags, unsigned int mask, struct statx * statxbuf)', {
342 'fd': 'dirfd',
343 'addr': '(uintptr_t)pathname',
344 'statx_flags': 'flags',
345 'len': 'mask',
346 'off': '(typeof(sqe->off))statxbuf'
347 }, define = 'CFA_HAVE_STATX'),
348 # CFA_HAVE_IORING_OP_READ
349 Call('READ', 'ssize_t read(int fd, void * buf, size_t count)', {
350 'fd': 'fd',
351 'addr': '(uintptr_t)buf',
352 'len': 'count'
353 }),
354 # CFA_HAVE_IORING_OP_WRITE
355 Call('WRITE', 'ssize_t write(int fd, void * buf, size_t count)', {
356 'fd': 'fd',
357 'addr': '(uintptr_t)buf',
358 'len': 'count'
359 }),
360 # CFA_HAVE_IORING_OP_SPLICE
361 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)', {
362 'splice_fd_in': 'fd_in',
363 'splice_off_in': 'off_in ? (typeof(sqe->splice_off_in))*off_in : (typeof(sqe->splice_off_in))-1',
364 'fd': 'fd_out',
365 'off': 'off_out ? (typeof(sqe->off))*off_out : (typeof(sqe->off))-1',
366 'len': 'len',
367 'splice_flags': 'flags'
368 }),
369 # CFA_HAVE_IORING_OP_TEE
370 Call('TEE', 'ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags)', {
371 'splice_fd_in': 'fd_in',
372 'fd': 'fd_out',
373 'len': 'len',
374 'splice_flags': 'flags'
375 })
376]
377
378print("//----------")
379print("// synchronous calls")
380for c in calls:
381 if c.define:
382 print("""#if defined({define})
383 {ret} cfa_{name}({params}, __u64 submit_flags);
384#endif""".format(define=c.define,ret=c.ret, name=c.name, params=c.params))
385 else:
386 print("{ret} cfa_{name}({params}, __u64 submit_flags);"
387 .format(ret=c.ret, name=c.name, params=c.params))
388
389print("\n//----------")
390print("// asynchronous calls")
391for c in calls:
392 if c.define:
393 print("""#if defined({define})
394 void async_{name}(io_future_t & future, {params}, __u64 submit_flags);
395#endif""".format(define=c.define,name=c.name, params=c.params))
396 else:
397 print("void async_{name}(io_future_t & future, {params}, __u64 submit_flags);"
398 .format(name=c.name, params=c.params))
399print("\n")
400
401for c in calls:
402 print("//-----------------------------------------------------------------------------")
403 print("// {}".format(c.name))
404 Async = AsyncTemplate.format(
405 name = c.name,
406 ret = c.ret,
407 params = c.params,
408 args = c.args(),
409 op = c.op,
410 body = c.body
411
412 )
413 Sync = SyncTemplate.format(
414 name = c.name,
415 ret = c.ret,
416 params = c.params,
417 args = c.args()
418 )
419
420 if c.define:
421 print("""#if defined({})
422 //----------
423 // asynchronous call
424 {}
425
426 //----------
427 // synchronous call
428 {}
429#endif
430""".format(c.define, "\n\t".join( Async.splitlines() ), "\n\t".join( Sync.splitlines() )))
431 else :
432 print("""//----------
433// asynchronous call
434{}
435
436//----------
437// synchronous call
438{}
439""".format(Async, Sync))
440
441print("""
442//-----------------------------------------------------------------------------
443// Check if a function is has asynchronous
444bool has_user_level_blocking( fptr_t func ) {
445 #if defined(CFA_HAVE_LINUX_IO_URING_H)""")
446
447for c in calls:
448 if c.define:
449 print(""" #if defined({define})
450 if( /*func == (fptr_t)preadv2 || */
451 func == (fptr_t)cfa_{name} ||
452 func == (fptr_t)async_{name} ) {{
453 #if defined(CFA_HAVE_IORING_OP_{op})
454 return true;
455 #else
456 return false;
457 #endif
458 }}
459 #endif""".format(define=c.define, name=c.name, op=c.op))
460 else:
461 print(""" if( /*func == (fptr_t)preadv2 || */
462 func == (fptr_t)cfa_{name} ||
463 func == (fptr_t)async_{name} ) {{
464 #if defined(CFA_HAVE_IORING_OP_{op})
465 return true;
466 #else
467 return false;
468 #endif
469 }}""".format(name=c.name, op=c.op))
470
471print(""" #endif
472
473 return false;
474}""")
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