source: libcfa/src/concurrency/iocall.cfa@ 47746a2

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 47746a2 was 5877b3e, checked in by Thierry Delisle <tdelisle@…>, 5 years ago

Added missing include
  • Property mode set to 100644
File size: 12.4 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// iocall.cfa --
8//
9// Author : Thierry Delisle
10// Created On : Wed Jul 1 14:51:00 2020
11// Last Modified By :
12// Last Modified On :
13// Update Count :
14//
15
16#include "bits/defs.hfa"
17
18//=============================================================================================
19// I/O uring backend
20//=============================================================================================
21
22#if defined(HAVE_LINUX_IO_URING_H)
23 #include <stdint.h>
24 #include <linux/io_uring.h>
25
26 #include "kernel_private.hfa"
27
28 extern [* struct io_uring_sqe, uint32_t] __submit_alloc( struct __io_data & ring, uint64_t data );
29 extern void __submit( struct __io_data & ring, uint32_t idx );
30
31 static inline void ?{}(struct io_uring_sqe & this, uint8_t opcode, int fd) {
32 this.opcode = opcode;
33 #if !defined(IOSQE_ASYNC)
34 this.flags = 0;
35 #else
36 this.flags = IOSQE_ASYNC;
37 #endif
38 this.ioprio = 0;
39 this.fd = fd;
40 this.off = 0;
41 this.addr = 0;
42 this.len = 0;
43 this.rw_flags = 0;
44 this.__pad2[0] = this.__pad2[1] = this.__pad2[2] = 0;
45 }
46
47 static inline void ?{}(struct io_uring_sqe & this, uint8_t opcode, int fd, void * addr, uint32_t len, uint64_t off ) {
48 (this){ opcode, fd };
49 this.off = off;
50 this.addr = (uint64_t)(uintptr_t)addr;
51 this.len = len;
52 }
53
54 #define __submit_prelude \
55 __io_user_data_t data = { 0, active_thread() }; \
56 struct __io_data & ring = *data.thrd->curr_cluster->io; \
57 struct io_uring_sqe * sqe; \
58 uint32_t idx; \
59 [sqe, idx] = __submit_alloc( ring, (uint64_t)(uintptr_t)&data );
60
61 #define __submit_wait \
62 /*__cfaabi_bits_print_safe( STDERR_FILENO, "Preparing user data %p for %p\n", &data, data.thrd );*/ \
63 verify( sqe->user_data == (uint64_t)(uintptr_t)&data ); \
64 __submit( ring, idx ); \
65 park( __cfaabi_dbg_ctx ); \
66 return data.result;
67#endif
68
69//=============================================================================================
70// I/O Forwards
71//=============================================================================================
72
73// Some forward declarations
74#include <unistd.h>
75
76extern "C" {
77 #include <sys/types.h>
78 #include <sys/socket.h>
79 #include <sys/syscall.h>
80
81#if defined(HAVE_PREADV2)
82 struct iovec;
83 extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
84#endif
85#if defined(HAVE_PWRITEV2)
86 struct iovec;
87 extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
88#endif
89
90 extern int fsync(int fd);
91 extern int sync_file_range(int fd, int64_t offset, int64_t nbytes, unsigned int flags);
92
93 struct msghdr;
94 struct sockaddr;
95 extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
96 extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
97 extern ssize_t send(int sockfd, const void *buf, size_t len, int flags);
98 extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
99 extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
100 extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
101
102 extern int fallocate(int fd, int mode, uint64_t offset, uint64_t len);
103 extern int posix_fadvise(int fd, uint64_t offset, uint64_t len, int advice);
104 extern int madvise(void *addr, size_t length, int advice);
105
106 extern int openat(int dirfd, const char *pathname, int flags, mode_t mode);
107 extern int close(int fd);
108
109 extern ssize_t read (int fd, void *buf, size_t count);
110}
111
112//=============================================================================================
113// I/O Interface
114//=============================================================================================
115
116//-----------------------------------------------------------------------------
117// Asynchronous operations
118#if defined(HAVE_PREADV2)
119 ssize_t cfa_preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags) {
120 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_READV)
121 return preadv2(fd, iov, iovcnt, offset, flags);
122 #else
123 __submit_prelude
124
125 (*sqe){ IORING_OP_READV, fd, iov, iovcnt, offset };
126
127 __submit_wait
128 #endif
129 }
130#endif
131
132#if defined(HAVE_PWRITEV2)
133 ssize_t cfa_pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags) {
134 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_WRITEV)
135 return pwritev2(fd, iov, iovcnt, offset, flags);
136 #else
137 __submit_prelude
138
139 (*sqe){ IORING_OP_WRITEV, fd, iov, iovcnt, offset };
140
141 __submit_wait
142 #endif
143 }
144#endif
145
146int cfa_fsync(int fd) {
147 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FSYNC)
148 return fsync(fd);
149 #else
150 __submit_prelude
151
152 (*sqe){ IORING_OP_FSYNC, fd };
153
154 __submit_wait
155 #endif
156}
157
158int cfa_sync_file_range(int fd, int64_t offset, int64_t nbytes, unsigned int flags) {
159 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SYNC_FILE_RANGE)
160 return sync_file_range(fd, offset, nbytes, flags);
161 #else
162 __submit_prelude
163
164 (*sqe){ IORING_OP_SYNC_FILE_RANGE, fd };
165 sqe->off = offset;
166 sqe->len = nbytes;
167 sqe->sync_range_flags = flags;
168
169 __submit_wait
170 #endif
171}
172
173
174ssize_t cfa_sendmsg(int sockfd, const struct msghdr *msg, int flags) {
175 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SENDMSG)
176 return sendmsg(sockfd, msg, flags);
177 #else
178 __submit_prelude
179
180 (*sqe){ IORING_OP_SENDMSG, sockfd, msg, 1, 0 };
181 sqe->msg_flags = flags;
182
183 __submit_wait
184 #endif
185}
186
187ssize_t cfa_recvmsg(int sockfd, struct msghdr *msg, int flags) {
188 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_RECVMSG)
189 return recvmsg(sockfd, msg, flags);
190 #else
191 __submit_prelude
192
193 (*sqe){ IORING_OP_RECVMSG, sockfd, msg, 1, 0 };
194 sqe->msg_flags = flags;
195
196 __submit_wait
197 #endif
198}
199
200ssize_t cfa_send(int sockfd, const void *buf, size_t len, int flags) {
201 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SEND)
202 return send( sockfd, buf, len, flags );
203 #else
204 __submit_prelude
205
206 (*sqe){ IORING_OP_SEND, sockfd };
207 sqe->addr = (uint64_t)buf;
208 sqe->len = len;
209 sqe->msg_flags = flags;
210
211 __submit_wait
212 #endif
213}
214
215ssize_t cfa_recv(int sockfd, void *buf, size_t len, int flags) {
216 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_RECV)
217 return recv( sockfd, buf, len, flags );
218 #else
219 __submit_prelude
220
221 (*sqe){ IORING_OP_RECV, sockfd };
222 sqe->addr = (uint64_t)buf;
223 sqe->len = len;
224 sqe->msg_flags = flags;
225
226 __submit_wait
227 #endif
228}
229
230int cfa_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags) {
231 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_ACCEPT)
232 return accept4( sockfd, addr, addrlen, flags );
233 #else
234 __submit_prelude
235
236 (*sqe){ IORING_OP_ACCEPT, sockfd };
237 sqe->addr = addr;
238 sqe->addr2 = addrlen;
239 sqe->accept_flags = flags;
240
241 __submit_wait
242 #endif
243}
244
245int cfa_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
246 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_CONNECT)
247 return connect( sockfd, addr, addrlen );
248 #else
249 __submit_prelude
250
251 (*sqe){ IORING_OP_CONNECT, sockfd };
252 sqe->addr = (uint64_t)addr;
253 sqe->off = addrlen;
254
255 __submit_wait
256 #endif
257}
258
259int cfa_fallocate(int fd, int mode, uint64_t offset, uint64_t len) {
260 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FALLOCATE)
261 return fallocate( fd, mode, offset, len );
262 #else
263 __submit_prelude
264
265 (*sqe){ IORING_OP_FALLOCATE, fd };
266 sqe->off = offset;
267 sqe->len = length;
268 sqe->mode = mode;
269
270 __submit_wait
271 #endif
272}
273
274int cfa_fadvise(int fd, uint64_t offset, uint64_t len, int advice) {
275 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FADVISE)
276 return posix_fadvise( fd, offset, len, advice );
277 #else
278 __submit_prelude
279
280 (*sqe){ IORING_OP_FADVISE, fd };
281 sqe->off = (uint64_t)offset;
282 sqe->len = length;
283 sqe->fadvise_advice = advice;
284
285 __submit_wait
286 #endif
287}
288
289int cfa_madvise(void *addr, size_t length, int advice) {
290 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_MADVISE)
291 return madvise( addr, length, advice );
292 #else
293 __submit_prelude
294
295 (*sqe){ IORING_OP_MADVISE, 0 };
296 sqe->addr = (uint64_t)addr;
297 sqe->len = length;
298 sqe->fadvise_advice = advice;
299
300 __submit_wait
301 #endif
302}
303
304int cfa_openat(int dirfd, const char *pathname, int flags, mode_t mode) {
305 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_OPENAT)
306 return openat( dirfd, pathname, flags, mode );
307 #else
308 __submit_prelude
309
310 (*sqe){ IORING_OP_OPENAT, dirfd };
311 sqe->addr = (uint64_t)pathname;
312 sqe->open_flags = flags;
313 sqe->mode = mode;
314
315 __submit_wait
316 #endif
317}
318
319int cfa_close(int fd) {
320 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_CLOSE)
321 return close( fd );
322 #else
323 __submit_prelude
324
325 (*sqe){ IORING_OP_CLOSE, fd };
326
327 __submit_wait
328 #endif
329}
330
331
332ssize_t cfa_read(int fd, void *buf, size_t count) {
333 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_READ)
334 return read( fd, buf, count );
335 #else
336 __submit_prelude
337
338 (*sqe){ IORING_OP_READ, fd, buf, count, 0 };
339
340 __submit_wait
341 #endif
342}
343
344ssize_t cfa_write(int fd, void *buf, size_t count) {
345 #if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_WRITE)
346 return read( fd, buf, count );
347 #else
348 __submit_prelude
349
350 (*sqe){ IORING_OP_WRITE, fd, buf, count, 0 };
351
352 __submit_wait
353 #endif
354}
355
356//-----------------------------------------------------------------------------
357// Check if a function is asynchronous
358
359// Macro magic to reduce the size of the following switch case
360#define IS_DEFINED_APPLY(f, ...) f(__VA_ARGS__)
361#define IS_DEFINED_SECOND(first, second, ...) second
362#define IS_DEFINED_TEST(expansion) _CFA_IO_FEATURE_##expansion
363#define IS_DEFINED(macro) IS_DEFINED_APPLY( IS_DEFINED_SECOND,IS_DEFINED_TEST(macro) false, true)
364
365bool has_user_level_blocking( fptr_t func ) {
366 #if defined(HAVE_LINUX_IO_URING_H)
367 #if defined(HAVE_PREADV2)
368 if( /*func == (fptr_t)preadv2 || */
369 func == (fptr_t)cfa_preadv2 )
370 #define _CFA_IO_FEATURE_IORING_OP_READV ,
371 return IS_DEFINED(IORING_OP_READV);
372 #endif
373
374 #if defined(HAVE_PWRITEV2)
375 if( /*func == (fptr_t)pwritev2 || */
376 func == (fptr_t)cfa_pwritev2 )
377 #define _CFA_IO_FEATURE_IORING_OP_WRITEV ,
378 return IS_DEFINED(IORING_OP_WRITEV);
379 #endif
380
381 if( /*func == (fptr_t)fsync || */
382 func == (fptr_t)cfa_fsync )
383 #define _CFA_IO_FEATURE_IORING_OP_FSYNC ,
384 return IS_DEFINED(IORING_OP_FSYNC);
385
386 if( /*func == (fptr_t)ync_file_range || */
387 func == (fptr_t)cfa_sync_file_range )
388 #define _CFA_IO_FEATURE_IORING_OP_SYNC_FILE_RANGE ,
389 return IS_DEFINED(IORING_OP_SYNC_FILE_RANGE);
390
391 if( /*func == (fptr_t)sendmsg || */
392 func == (fptr_t)cfa_sendmsg )
393 #define _CFA_IO_FEATURE_IORING_OP_SENDMSG ,
394 return IS_DEFINED(IORING_OP_SENDMSG);
395
396 if( /*func == (fptr_t)recvmsg || */
397 func == (fptr_t)cfa_recvmsg )
398 #define _CFA_IO_FEATURE_IORING_OP_RECVMSG ,
399 return IS_DEFINED(IORING_OP_RECVMSG);
400
401 if( /*func == (fptr_t)send || */
402 func == (fptr_t)cfa_send )
403 #define _CFA_IO_FEATURE_IORING_OP_SEND ,
404 return IS_DEFINED(IORING_OP_SEND);
405
406 if( /*func == (fptr_t)recv || */
407 func == (fptr_t)cfa_recv )
408 #define _CFA_IO_FEATURE_IORING_OP_RECV ,
409 return IS_DEFINED(IORING_OP_RECV);
410
411 if( /*func == (fptr_t)accept4 || */
412 func == (fptr_t)cfa_accept4 )
413 #define _CFA_IO_FEATURE_IORING_OP_ACCEPT ,
414 return IS_DEFINED(IORING_OP_ACCEPT);
415
416 if( /*func == (fptr_t)connect || */
417 func == (fptr_t)cfa_connect )
418 #define _CFA_IO_FEATURE_IORING_OP_CONNECT ,
419 return IS_DEFINED(IORING_OP_CONNECT);
420
421 if( /*func == (fptr_t)fallocate || */
422 func == (fptr_t)cfa_fallocate )
423 #define _CFA_IO_FEATURE_IORING_OP_FALLOCATE ,
424 return IS_DEFINED(IORING_OP_FALLOCATE);
425
426 if( /*func == (fptr_t)posix_fadvise || */
427 func == (fptr_t)cfa_fadvise )
428 #define _CFA_IO_FEATURE_IORING_OP_FADVISE ,
429 return IS_DEFINED(IORING_OP_FADVISE);
430
431 if( /*func == (fptr_t)madvise || */
432 func == (fptr_t)cfa_madvise )
433 #define _CFA_IO_FEATURE_IORING_OP_MADVISE ,
434 return IS_DEFINED(IORING_OP_MADVISE);
435
436 if( /*func == (fptr_t)openat || */
437 func == (fptr_t)cfa_openat )
438 #define _CFA_IO_FEATURE_IORING_OP_OPENAT ,
439 return IS_DEFINED(IORING_OP_OPENAT);
440
441 if( /*func == (fptr_t)close || */
442 func == (fptr_t)cfa_close )
443 #define _CFA_IO_FEATURE_IORING_OP_CLOSE ,
444 return IS_DEFINED(IORING_OP_CLOSE);
445
446 if( /*func == (fptr_t)read || */
447 func == (fptr_t)cfa_read )
448 #define _CFA_IO_FEATURE_IORING_OP_READ ,
449 return IS_DEFINED(IORING_OP_READ);
450
451 if( /*func == (fptr_t)write || */
452 func == (fptr_t)cfa_write )
453 #define _CFA_IO_FEATURE_IORING_OP_WRITE ,
454 return IS_DEFINED(IORING_OP_WRITE);
455 #endif
456
457 return false;
458}
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