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Comparing Linux-AIO/AIO.xs (file contents):
Revision 1.20 by root, Sun Jul 18 10:55:34 2004 UTC vs.
Revision 1.32 by root, Tue Jul 12 10:51:09 2005 UTC

… …
8#include <sys/stat.h> 8#include <sys/stat.h>
9#include <unistd.h> 9#include <unistd.h>
10#include <fcntl.h> 10#include <fcntl.h>
11#include <signal.h> 11#include <signal.h>
12#include <sched.h> 12#include <sched.h>
13#include <endian.h>
13 14
14typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 15typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
15typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 16typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
16typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 17typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
17 18
18#ifndef __NR_pread64 19#if __i386 || __amd64
19# define __NR_pread64 __NR_pread 20# define STACKSIZE ( 256 * sizeof (long))
21#elif __ia64
22# define STACKSIZE (8192 * sizeof (long))
23#else
24# define STACKSIZE ( 512 * sizeof (long))
20#endif 25#endif
21#ifndef __NR_pwrite64
22# define __NR_pwrite64 __NR_pwrite
23#endif
24
25#define STACKSIZE 1024 /* yeah */
26 26
27enum { 27enum {
28 REQ_QUIT, 28 REQ_QUIT,
29 REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, 29 REQ_OPEN, REQ_CLOSE,
30 REQ_READ, REQ_WRITE, REQ_READAHEAD,
30 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK 31 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
32 REQ_FSYNC, REQ_FDATASYNC,
31}; 33};
32 34
33typedef struct { 35typedef struct {
34 char stack[STACKSIZE]; 36 char stack[STACKSIZE];
35} aio_thread; 37} aio_thread;
… …
48 int errorno; 50 int errorno;
49 SV *data, *callback; 51 SV *data, *callback;
50 void *dataptr; 52 void *dataptr;
51 STRLEN dataoffset; 53 STRLEN dataoffset;
52 54
53 struct stat64 *statdata; 55 Stat_t *statdata;
54} aio_cb; 56} aio_cb;
55 57
56typedef aio_cb *aio_req; 58typedef aio_cb *aio_req;
57 59
58static int started; 60static int started;
… …
69 aio_thread *thr; 71 aio_thread *thr;
70 72
71 New (0, thr, 1, aio_thread); 73 New (0, thr, 1, aio_thread);
72 74
73 if (clone (aio_proc, 75 if (clone (aio_proc,
74 &(thr->stack[STACKSIZE]), 76 &(thr->stack[STACKSIZE - 16]),
75 CLONE_VM|CLONE_FS|CLONE_FILES, 77 CLONE_VM|CLONE_FS|CLONE_FILES,
76 thr) >= 0) 78 thr) >= 0)
77 started++; 79 started++;
78 else 80 else
79 Safefree (thr); 81 Safefree (thr);
… …
95{ 97{
96 nreqs++; 98 nreqs++;
97 req->next = 0; 99 req->next = 0;
98 100
99 if (qe) 101 if (qe)
102 {
100 qe->next = req; 103 qe->next = req;
104 qe = req;
105 }
101 else 106 else
102 qe = qs = req; 107 qe = qs = req;
103 108
104 send_reqs (); 109 send_reqs ();
105} 110}
… …
161 req->callback = SvREFCNT_inc (callback); 166 req->callback = SvREFCNT_inc (callback);
162 167
163 send_req (req); 168 send_req (req);
164} 169}
165 170
171static void
172poll_wait ()
173{
174 if (!nreqs)
175 return;
176
177 fd_set rfd;
178 FD_ZERO(&rfd);
179 FD_SET(respipe[0], &rfd);
180
181 select (respipe[0] + 1, &rfd, 0, 0, 0);
182}
183
166static int 184static int
167poll_cb (pTHX) 185poll_cb (pTHX)
168{ 186{
169 dSP; 187 dSP;
170 int count = 0; 188 int count = 0;
171 aio_req req; 189 aio_req req;
172 190
173 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 191 while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))
174 { 192 {
193 nreqs--;
194
175 if (req->type == REQ_QUIT) 195 if (req->type == REQ_QUIT)
176 { 196 {
177 Safefree (req->thread); 197 Safefree (req->thread);
178 started--; 198 started--;
179 } 199 }
… …
189 if (req->data) 209 if (req->data)
190 SvREFCNT_dec (req->data); 210 SvREFCNT_dec (req->data);
191 211
192 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 212 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
193 { 213 {
194 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 214 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
195 PL_laststatval = req->result; 215 PL_laststatval = req->result;
196 PL_statcache.st_dev = req->statdata->st_dev; 216 PL_statcache = *(req->statdata);
197 PL_statcache.st_ino = req->statdata->st_ino;
198 PL_statcache.st_mode = req->statdata->st_mode;
199 PL_statcache.st_nlink = req->statdata->st_nlink;
200 PL_statcache.st_uid = req->statdata->st_uid;
201 PL_statcache.st_gid = req->statdata->st_gid;
202 PL_statcache.st_rdev = req->statdata->st_rdev;
203 PL_statcache.st_size = req->statdata->st_size;
204 PL_statcache.st_atime = req->statdata->st_atime;
205 PL_statcache.st_mtime = req->statdata->st_mtime;
206 PL_statcache.st_ctime = req->statdata->st_ctime;
207 PL_statcache.st_blksize = req->statdata->st_blksize;
208 PL_statcache.st_blocks = req->statdata->st_blocks;
209 217
210 Safefree (req->statdata); 218 Safefree (req->statdata);
211 } 219 }
212 220
213 PUSHMARK (SP); 221 PUSHMARK (SP);
… …
218 226
219 if (req->callback) 227 if (req->callback)
220 SvREFCNT_dec (req->callback); 228 SvREFCNT_dec (req->callback);
221 229
222 errno = errorno; 230 errno = errorno;
223 nreqs--;
224 count++; 231 count++;
225 } 232 }
226 233
227 Safefree (req); 234 Safefree (req);
228 } 235 }
… …
234} 241}
235 242
236static sigset_t fullsigset; 243static sigset_t fullsigset;
237 244
238#undef errno 245#undef errno
239#include <asm/unistd.h> 246#include <linux/unistd.h>
247#include <linux/types.h>
240#include <sys/prctl.h> 248#include <sys/prctl.h>
249
250#if __alpha || __ia64 || __hppa || __v850__
251# define stat kernelstat
252# define stat64 kernelstat64
253# include <asm/stat.h>
254# undef stat
255# undef stat64
256#else
257# define kernelstat stat
258# define kernelstat64 stat64
259#endif
260
261#define COPY_STATDATA \
262 req->statdata->st_dev = statdata.st_dev; \
263 req->statdata->st_ino = statdata.st_ino; \
264 req->statdata->st_mode = statdata.st_mode; \
265 req->statdata->st_nlink = statdata.st_nlink; \
266 req->statdata->st_uid = statdata.st_uid; \
267 req->statdata->st_gid = statdata.st_gid; \
268 req->statdata->st_rdev = statdata.st_rdev; \
269 req->statdata->st_size = statdata.st_size; \
270 req->statdata->st_atime = statdata.st_atime; \
271 req->statdata->st_mtime = statdata.st_mtime; \
272 req->statdata->st_ctime = statdata.st_ctime; \
273 req->statdata->st_blksize = statdata.st_blksize; \
274 req->statdata->st_blocks = statdata.st_blocks; \
241 275
242static int 276static int
243aio_proc (void *thr_arg) 277aio_proc (void *thr_arg)
244{ 278{
245 aio_thread *thr = thr_arg; 279 aio_thread *thr = thr_arg;
246 aio_req req; 280 aio_req req;
247 int errno; 281 int errno;
248 282
249 /* this is very much x86 and kernel-specific :(:(:( */ 283 /* this is very much kernel-specific :(:(:( */
250 /* we rely on gcc's ability to create closures. */ 284 /* we rely on gcc's ability to create closures. */
251 _syscall3(int,read,int,fd,char *,buf,size_t,count) 285 _syscall3(__kernel_size_t, read , unsigned int, fd, char *, buf, __kernel_size_t, count)
252 _syscall3(int,write,int,fd,char *,buf,size_t,count) 286 _syscall3(__kernel_size_t, write, unsigned int, fd, char *, buf, __kernel_size_t, count)
253 287
254 _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) 288 _syscall3(long, open, char *, pathname, int, flags, int, mode)
255 _syscall1(int,close,int,fd) 289 _syscall1(long, close, unsigned int, fd)
256
257 _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
258 _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi)
259
260 _syscall2(int,stat64, const char *, filename, struct stat64 *, buf)
261 _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf)
262 _syscall2(int,fstat64, int, fd, struct stat64 *, buf)
263
264 _syscall1(int,unlink, char *, filename); 290 _syscall1(long, unlink, char *, filename);
291 _syscall1(long, fsync, unsigned int, fd);
265 292
293#ifndef __NR_fdatasync
294# define __NR_fdatasync __NR_fsync
295#endif
296 _syscall1(long, fdatasync, unsigned int, fd);
297
298#if BYTE_ORDER == LITTLE_ENDIAN
299# define LOFF_ARG(off) (off & 0xffffffff), (off >> 32)
300#elif BYTE_ORDER == BIG_ENDIAN
301# define LOFF_ARG(off) (off >> 32), (off & 0xffffffff)
302#endif
303
304#ifndef __NR_pread64
305# define __NR_pread64 __NR_pread
306# define __NR_pwrite64 __NR_write
307#endif
308 _syscall5(__kernel_ssize_t, pread64 , unsigned int, fd, char *, buf,
309 __kernel_size_t, count, unsigned int, offset_lh, unsigned int, offset_hl)
310 _syscall5(__kernel_ssize_t, pwrite64, unsigned int, fd, char *, buf,
311 __kernel_size_t, count, unsigned int, offset_lh, unsigned int, offset_hl)
312 _syscall4(long, readahead, unsigned int, fd, unsigned int, offset_lh, unsigned int, offset_hl, __kernel_size_t, count);
313
314#if __NR_stat64
315 _syscall2(long, stat64 , const char *, filename, struct kernelstat64 *, buf)
316 _syscall2(long, lstat64, const char *, filename, struct kernelstat64 *, buf)
317 _syscall2(long, fstat64, int , fd , struct kernelstat64 *, buf)
318#elif __NR_stat
319 _syscall2(long, stat , const char *, filename, struct kernelstat *, buf)
320 _syscall2(long, lstat, const char *, filename, struct kernelstat *, buf)
321 _syscall2(long, fstat, int , fd , struct kernelstat *, buf)
322#else
323# error "neither stat64 nor stat defined"
324#endif
325
326 /* the following two calls might clobber errno */
266 sigprocmask (SIG_SETMASK, &fullsigset, 0); 327 sigprocmask (SIG_SETMASK, &fullsigset, 0);
267 prctl (PR_SET_PDEATHSIG, SIGKILL); 328 prctl (PR_SET_PDEATHSIG, SIGKILL);
268 329
269 /* then loop */ 330 /* then loop */
270 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) 331 while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
… …
272 req->thread = thr; 333 req->thread = thr;
273 errno = 0; /* strictly unnecessary */ 334 errno = 0; /* strictly unnecessary */
274 335
275 switch (req->type) 336 switch (req->type)
276 { 337 {
277 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 338 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, LOFF_ARG (req->offset)); break;
278 case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; 339 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, LOFF_ARG (req->offset)); break;
340 case REQ_READAHEAD: req->result = readahead (req->fd, LOFF_ARG (req->offset), req->length); break;
341
342#if __NR_stat64
343 struct kernelstat64 statdata;
344 case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break;
345 case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break;
346 case REQ_FSTAT: req->result = fstat64 (req->fd , &statdata); COPY_STATDATA; break;
347#else
348 struct kernelstat statdata;
349 case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break;
350 case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break;
351 case REQ_FSTAT: req->result = fstat (req->fd , &statdata); COPY_STATDATA; break;
352#endif
353
279 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 354 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
280 case REQ_CLOSE: req->result = close (req->fd); break; 355 case REQ_CLOSE: req->result = close (req->fd); break;
281 case REQ_STAT: req->result = stat64 (req->dataptr, req->statdata); break;
282 case REQ_LSTAT: req->result = lstat64 (req->dataptr, req->statdata); break;
283 case REQ_FSTAT: req->result = fstat64 (req->fd, req->statdata); break;
284 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 356 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
357
358 case REQ_FSYNC: req->result = fsync (req->fd); break;
359 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
285 360
286 case REQ_QUIT: 361 case REQ_QUIT:
287 default:
288 write (respipe[1], (void *)&req, sizeof (req)); 362 write (respipe[1], (void *)&req, sizeof (req));
289 return 0; 363 return 0;
364
365 default:
366 req->result = ENOSYS;
367 break;
290 } 368 }
291 369
292 req->errorno = errno; 370 req->errorno = errno;
293 write (respipe[1], (void *)&req, sizeof (req)); 371 write (respipe[1], (void *)&req, sizeof (req));
294 } 372 }
… …
327void 405void
328max_parallel(nthreads) 406max_parallel(nthreads)
329 int nthreads 407 int nthreads
330 PROTOTYPE: $ 408 PROTOTYPE: $
331 CODE: 409 CODE:
410{
332 int cur = started; 411 int cur = started;
333 while (cur > nthreads) 412 while (cur > nthreads)
334 { 413 {
335 end_thread (); 414 end_thread ();
336 cur--; 415 cur--;
337 } 416 }
338 417
339 while (started > nthreads) 418 while (started > nthreads)
340 { 419 {
341 fd_set rfd; 420 poll_wait ();
342 FD_ZERO(&rfd);
343 FD_SET(respipe[0], &rfd);
344
345 select (respipe[0] + 1, &rfd, 0, 0, 0);
346 poll_cb (aTHX); 421 poll_cb (aTHX);
347 } 422 }
423}
348 424
349void 425void
350aio_open(pathname,flags,mode,callback) 426aio_open(pathname,flags,mode,callback)
351 SV * pathname 427 SV * pathname
352 int flags 428 int flags
353 int mode 429 int mode
354 SV * callback 430 SV * callback
355 PROTOTYPE: $$$$ 431 PROTOTYPE: $$$$
356 CODE: 432 CODE:
433{
357 aio_req req; 434 aio_req req;
358 435
359 Newz (0, req, 1, aio_cb); 436 Newz (0, req, 1, aio_cb);
360 437
361 if (!req) 438 if (!req)
… …
367 req->fd = flags; 444 req->fd = flags;
368 req->mode = mode; 445 req->mode = mode;
369 req->callback = SvREFCNT_inc (callback); 446 req->callback = SvREFCNT_inc (callback);
370 447
371 send_req (req); 448 send_req (req);
449}
372 450
373void 451void
374aio_close(fh,callback) 452aio_close(fh,callback)
375 InputStream fh 453 InputStream fh
376 SV * callback 454 SV * callback
377 PROTOTYPE: $$ 455 PROTOTYPE: $$
456 ALIAS:
457 aio_close = REQ_CLOSE
458 aio_fsync = REQ_FSYNC
459 aio_fdatasync = REQ_FDATASYNC
378 CODE: 460 CODE:
461{
379 aio_req req; 462 aio_req req;
380 463
381 Newz (0, req, 1, aio_cb); 464 Newz (0, req, 1, aio_cb);
382 465
383 if (!req) 466 if (!req)
384 croak ("out of memory during aio_req allocation"); 467 croak ("out of memory during aio_req allocation");
385 468
386 req->type = REQ_CLOSE; 469 req->type = ix;
387 req->fd = PerlIO_fileno (fh); 470 req->fd = PerlIO_fileno (fh);
388 req->callback = SvREFCNT_inc (callback); 471 req->callback = SvREFCNT_inc (callback);
389 472
390 send_req (req); 473 send_req (req);
474}
391 475
392void 476void
393aio_read(fh,offset,length,data,dataoffset,callback) 477aio_read(fh,offset,length,data,dataoffset,callback)
394 InputStream fh 478 InputStream fh
395 UV offset 479 UV offset
… …
412 PROTOTYPE: $$$$$$ 496 PROTOTYPE: $$$$$$
413 CODE: 497 CODE:
414 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); 498 read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
415 499
416void 500void
501aio_readahead(fh,offset,length,callback)
502 InputStream fh
503 UV offset
504 IV length
505 SV * callback
506 PROTOTYPE: $$$$
507 CODE:
508{
509 aio_req req;
510
511 if (length < 0)
512 croak ("length must not be negative");
513
514 Newz (0, req, 1, aio_cb);
515
516 if (!req)
517 croak ("out of memory during aio_req allocation");
518
519 req->type = REQ_READAHEAD;
520 req->fd = PerlIO_fileno (fh);
521 req->offset = offset;
522 req->length = length;
523 req->callback = SvREFCNT_inc (callback);
524
525 send_req (req);
526}
527
528void
417aio_stat(fh_or_path,callback) 529aio_stat(fh_or_path,callback)
418 SV * fh_or_path 530 SV * fh_or_path
419 SV * callback 531 SV * callback
420 PROTOTYPE: $$ 532 PROTOTYPE: $$
421 ALIAS: 533 ALIAS:
422 aio_lstat = 1 534 aio_lstat = 1
423 CODE: 535 CODE:
536{
424 aio_req req; 537 aio_req req;
425 538
426 Newz (0, req, 1, aio_cb); 539 Newz (0, req, 1, aio_cb);
427 540
428 if (!req) 541 if (!req)
429 croak ("out of memory during aio_req allocation"); 542 croak ("out of memory during aio_req allocation");
430 543
431 New (0, req->statdata, 1, struct stat64); 544 New (0, req->statdata, 1, Stat_t);
432 545
433 if (!req->statdata) 546 if (!req->statdata)
434 croak ("out of memory during aio_req->statdata allocation"); 547 croak ("out of memory during aio_req->statdata allocation");
435 548
436 if (SvPOK (fh_or_path)) 549 if (SvPOK (fh_or_path))
… …
446 } 559 }
447 560
448 req->callback = SvREFCNT_inc (callback); 561 req->callback = SvREFCNT_inc (callback);
449 562
450 send_req (req); 563 send_req (req);
564}
451 565
452void 566void
453aio_unlink(pathname,callback) 567aio_unlink(pathname,callback)
454 SV * pathname 568 SV * pathname
455 SV * callback 569 SV * callback
456 PROTOTYPE: $$ 570 PROTOTYPE: $$
457 CODE: 571 CODE:
572{
458 aio_req req; 573 aio_req req;
459 574
460 Newz (0, req, 1, aio_cb); 575 Newz (0, req, 1, aio_cb);
461 576
462 if (!req) 577 if (!req)
… …
466 req->data = newSVsv (pathname); 581 req->data = newSVsv (pathname);
467 req->dataptr = SvPV_nolen (req->data); 582 req->dataptr = SvPV_nolen (req->data);
468 req->callback = SvREFCNT_inc (callback); 583 req->callback = SvREFCNT_inc (callback);
469 584
470 send_req (req); 585 send_req (req);
586}
471 587
472int 588int
473poll_fileno() 589poll_fileno()
474 PROTOTYPE: 590 PROTOTYPE:
475 CODE: 591 CODE:
… …
483 CODE: 599 CODE:
484 RETVAL = poll_cb (aTHX); 600 RETVAL = poll_cb (aTHX);
485 OUTPUT: 601 OUTPUT:
486 RETVAL 602 RETVAL
487 603
604void
605poll_wait()
606 PROTOTYPE:
607 CODE:
608 poll_wait ();
609
488int 610int
489nreqs() 611nreqs()
490 PROTOTYPE: 612 PROTOTYPE:
491 CODE: 613 CODE:
492 RETVAL = nreqs; 614 RETVAL = nreqs;

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