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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC

… …
7 7
8#include "autoconf/config.h" 8#include "autoconf/config.h"
9 9
10#include <pthread.h> 10#include <pthread.h>
11 11
12#include <stddef.h>
13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14 16#include <limits.h>
15#include <unistd.h> 17#include <unistd.h>
16#include <fcntl.h> 18#include <fcntl.h>
17#include <signal.h> 19#include <signal.h>
18#include <sched.h> 20#include <sched.h>
19 21
… …
23# elif __freebsd 25# elif __freebsd
24# include <sys/socket.h> 26# include <sys/socket.h>
25# include <sys/uio.h> 27# include <sys/uio.h>
26# elif __hpux 28# elif __hpux
27# include <sys/socket.h> 29# include <sys/socket.h>
30# elif __solaris /* not yet */
31# include <sys/sendfile.h>
32# else
33# error sendfile support requested but not available
28# endif 34# endif
35#endif
36
37/* used for struct dirent, AIX doesn't provide it */
38#ifndef NAME_MAX
39# define NAME_MAX 4096
29#endif 40#endif
30 41
31#if __ia64 42#if __ia64
32# define STACKSIZE 65536 43# define STACKSIZE 65536
33#else 44#else
34# define STACKSIZE 4096 45# define STACKSIZE 8192
35#endif 46#endif
36 47
37enum { 48enum {
38 REQ_QUIT, 49 REQ_QUIT,
39 REQ_OPEN, REQ_CLOSE, 50 REQ_OPEN, REQ_CLOSE,
40 REQ_READ, REQ_WRITE, REQ_READAHEAD, 51 REQ_READ, REQ_WRITE, REQ_READAHEAD,
41 REQ_SENDFILE, 52 REQ_SENDFILE,
42 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 53 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43 REQ_FSYNC, REQ_FDATASYNC, 54 REQ_FSYNC, REQ_FDATASYNC,
44 REQ_UNLINK, REQ_RMDIR, 55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45 REQ_SYMLINK, 56 REQ_READDIR,
57 REQ_LINK, REQ_SYMLINK,
46}; 58};
47 59
60#define AIO_CB_KLASS "IO::AIO::CB"
61
48typedef struct aio_cb { 62typedef struct aio_cb
63{
64 struct aio_cb *grp_prev, *grp_next;
65 struct aio_grp *grp;
66
49 struct aio_cb *volatile next; 67 struct aio_cb *volatile next;
50 68
51 int type; 69 SV *self; /* the perl counterpart of this request, if any */
52 70
53 int fd, fd2; 71 SV *data, *callback;
72 SV *fh, *fh2;
73 void *dataptr, *data2ptr;
74 Stat_t *statdata;
54 off_t offset; 75 off_t offset;
55 size_t length; 76 size_t length;
56 ssize_t result; 77 ssize_t result;
78
79 int type;
80 int fd, fd2;
81 int errorno;
82 STRLEN dataoffset;
57 mode_t mode; /* open */ 83 mode_t mode; /* open */
58 int errorno; 84 unsigned char cancelled;
59 SV *data, *callback;
60 SV *fh, *fh2;
61 void *dataptr, *data2ptr;
62 STRLEN dataoffset;
63
64 Stat_t *statdata;
65} aio_cb; 85} aio_cb;
66 86
67typedef aio_cb *aio_req; 87typedef aio_cb *aio_req;
88typedef aio_cb *aio_req_ornot;
68 89
69static int started, wanted; 90static int started, wanted;
70static volatile int nreqs; 91static volatile int nreqs;
71static int max_outstanding = 1<<30; 92static int max_outstanding = 1<<30;
72static int respipe [2]; 93static int respipe [2];
… …
76static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 97static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77 98
78static volatile aio_req reqs, reqe; /* queue start, queue end */ 99static volatile aio_req reqs, reqe; /* queue start, queue end */
79static volatile aio_req ress, rese; /* queue start, queue end */ 100static volatile aio_req ress, rese; /* queue start, queue end */
80 101
102typedef struct aio_grp
103{
104 struct aio_cb *first, *last;
105 SV *callback;
106 int busycount;
107} aio_grp;
108
109static void aio_grp_begin (aio_grp *grp)
110{
111 ++grp->busycount;
112}
113
114static void aio_grp_end (aio_grp *grp)
115{
116 --grp->busycount;
117
118 if (grp->busycount)
119 return;
120
121 SvREFCNT_dec (grp->callback);
122 grp->callback = 0;
123}
124
125static aio_grp *aio_grp_new ()
126{
127 aio_grp *grp;
128
129 Newz (0, grp, 1, aio_grp);
130 aio_grp_begin (grp);
131
132 return grp;
133}
134
135/* must be called at most once */
136static SV *req_sv (aio_req req)
137{
138 req->self = (SV *)newHV ();
139 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
140
141 return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1));
142}
143
144static aio_req SvAIO_REQ (SV *sv)
145{
146 if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv))
147 croak ("object of class " AIO_CB_KLASS " expected");
148
149 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
150
151 return mg ? (aio_req)mg->mg_ptr : 0;
152}
153
81static void free_req (aio_req req) 154static void req_free (aio_req req)
82{ 155{
156 if (req->self)
157 {
158 sv_unmagic (req->self, PERL_MAGIC_ext);
159 SvREFCNT_dec (req->self);
160 }
161
83 if (req->data) 162 if (req->data)
84 SvREFCNT_dec (req->data); 163 SvREFCNT_dec (req->data);
85 164
86 if (req->fh) 165 if (req->fh)
87 SvREFCNT_dec (req->fh); 166 SvREFCNT_dec (req->fh);
… …
92 if (req->statdata) 171 if (req->statdata)
93 Safefree (req->statdata); 172 Safefree (req->statdata);
94 173
95 if (req->callback) 174 if (req->callback)
96 SvREFCNT_dec (req->callback); 175 SvREFCNT_dec (req->callback);
176
177 if (req->type == REQ_READDIR && req->result >= 0)
178 free (req->data2ptr);
97 179
98 Safefree (req); 180 Safefree (req);
99} 181}
100 182
101static void 183static void
… …
166 PL_statcache = *(req->statdata); 248 PL_statcache = *(req->statdata);
167 } 249 }
168 250
169 ENTER; 251 ENTER;
170 PUSHMARK (SP); 252 PUSHMARK (SP);
171 XPUSHs (sv_2mortal (newSViv (req->result)));
172 253
173 if (req->type == REQ_OPEN) 254 if (req->type == REQ_READDIR)
174 { 255 {
175 /* convert fd to fh */ 256 SV *rv = &PL_sv_undef;
176 SV *fh;
177 257
178 PUTBACK; 258 if (req->result >= 0)
179 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 259 {
180 SPAGAIN; 260 char *buf = req->data2ptr;
261 AV *av = newAV ();
181 262
182 fh = SvREFCNT_inc (POPs); 263 while (req->result)
264 {
265 SV *sv = newSVpv (buf, 0);
183 266
267 av_push (av, sv);
268 buf += SvCUR (sv) + 1;
269 req->result--;
270 }
271
272 rv = sv_2mortal (newRV_noinc ((SV *)av));
273 }
274
184 PUSHMARK (SP); 275 XPUSHs (rv);
185 XPUSHs (sv_2mortal (fh));
186 } 276 }
277 else
278 {
279 XPUSHs (sv_2mortal (newSViv (req->result)));
187 280
281 if (req->type == REQ_OPEN)
282 {
283 /* convert fd to fh */
284 SV *fh;
285
286 PUTBACK;
287 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
288 SPAGAIN;
289
290 fh = SvREFCNT_inc (POPs);
291
292 PUSHMARK (SP);
293 XPUSHs (sv_2mortal (fh));
294 }
295 }
296
188 if (SvOK (req->callback)) 297 if (SvOK (req->callback) && !req->cancelled)
189 { 298 {
190 PUTBACK; 299 PUTBACK;
191 call_sv (req->callback, G_VOID | G_EVAL); 300 call_sv (req->callback, G_VOID | G_EVAL);
192 SPAGAIN; 301 SPAGAIN;
193 302
194 if (SvTRUE (ERRSV)) 303 if (SvTRUE (ERRSV))
195 { 304 {
196 free_req (req); 305 req_free (req);
197 croak (0); 306 croak (0);
198 } 307 }
199 } 308 }
200 309
201 LEAVE; 310 LEAVE;
202 311
203 errno = errorno; 312 errno = errorno;
204 count++; 313 count++;
205 } 314 }
206 315
207 free_req (req); 316 req_free (req);
208 } 317 }
209 318
210 return count; 319 return count;
211} 320}
212 321
… …
231 340
232 sigprocmask (SIG_SETMASK, &oldsigset, 0); 341 sigprocmask (SIG_SETMASK, &oldsigset, 0);
233} 342}
234 343
235static void 344static void
236send_req (aio_req req) 345req_send (aio_req req)
237{ 346{
238 while (started < wanted && nreqs >= started) 347 while (started < wanted && nreqs >= started)
239 start_thread (); 348 start_thread ();
240 349
241 nreqs++; 350 nreqs++;
… …
272{ 381{
273 aio_req req; 382 aio_req req;
274 Newz (0, req, 1, aio_cb); 383 Newz (0, req, 1, aio_cb);
275 req->type = REQ_QUIT; 384 req->type = REQ_QUIT;
276 385
277 send_req (req); 386 req_send (req);
278} 387}
279 388
280static void min_parallel (int nthreads) 389static void min_parallel (int nthreads)
281{ 390{
282 if (wanted < nthreads) 391 if (wanted < nthreads)
… …
311 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 420 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312 croak ("cannot set result pipe to nonblocking mode"); 421 croak ("cannot set result pipe to nonblocking mode");
313 422
314 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 423 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315 croak ("cannot set result pipe to nonblocking mode"); 424 croak ("cannot set result pipe to nonblocking mode");
316}
317
318static void atfork_prepare (void)
319{
320 pthread_mutex_lock (&reqlock);
321 pthread_mutex_lock (&reslock);
322}
323
324static void atfork_parent (void)
325{
326 pthread_mutex_unlock (&reslock);
327 pthread_mutex_unlock (&reqlock);
328}
329
330static void atfork_child (void)
331{
332 aio_req prv;
333
334 started = 0;
335
336 while (reqs)
337 {
338 prv = reqs;
339 reqs = prv->next;
340 free_req (prv);
341 }
342
343 reqs = reqe = 0;
344
345 while (ress)
346 {
347 prv = ress;
348 ress = prv->next;
349 free_req (prv);
350 }
351
352 ress = rese = 0;
353
354 close (respipe [0]);
355 close (respipe [1]);
356 create_pipe ();
357
358 atfork_parent ();
359} 425}
360 426
361/*****************************************************************************/ 427/*****************************************************************************/
362/* work around various missing functions */ 428/* work around various missing functions */
363 429
… …
368/* 434/*
369 * make our pread/pwrite safe against themselves, but not against 435 * make our pread/pwrite safe against themselves, but not against
370 * normal read/write by using a mutex. slows down execution a lot, 436 * normal read/write by using a mutex. slows down execution a lot,
371 * but that's your problem, not mine. 437 * but that's your problem, not mine.
372 */ 438 */
373static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 439static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374 440
375static ssize_t 441static ssize_t
376pread (int fd, void *buf, size_t count, off_t offset) 442pread (int fd, void *buf, size_t count, off_t offset)
377{ 443{
378 ssize_t res; 444 ssize_t res;
379 off_t ooffset; 445 off_t ooffset;
380 446
381 pthread_mutex_lock (&iolock); 447 pthread_mutex_lock (&preadwritelock);
382 ooffset = lseek (fd, 0, SEEK_CUR); 448 ooffset = lseek (fd, 0, SEEK_CUR);
383 lseek (fd, offset, SEEK_SET); 449 lseek (fd, offset, SEEK_SET);
384 res = read (fd, buf, count); 450 res = read (fd, buf, count);
385 lseek (fd, ooffset, SEEK_SET); 451 lseek (fd, ooffset, SEEK_SET);
386 pthread_mutex_unlock (&iolock); 452 pthread_mutex_unlock (&preadwritelock);
387 453
388 return res; 454 return res;
389} 455}
390 456
391static ssize_t 457static ssize_t
392pwrite (int fd, void *buf, size_t count, off_t offset) 458pwrite (int fd, void *buf, size_t count, off_t offset)
393{ 459{
394 ssize_t res; 460 ssize_t res;
395 off_t ooffset; 461 off_t ooffset;
396 462
397 pthread_mutex_lock (&iolock); 463 pthread_mutex_lock (&preadwritelock);
398 ooffset = lseek (fd, 0, SEEK_CUR); 464 ooffset = lseek (fd, 0, SEEK_CUR);
399 lseek (fd, offset, SEEK_SET); 465 lseek (fd, offset, SEEK_SET);
400 res = write (fd, buf, count); 466 res = write (fd, buf, count);
401 lseek (fd, offset, SEEK_SET); 467 lseek (fd, offset, SEEK_SET);
402 pthread_mutex_unlock (&iolock); 468 pthread_mutex_unlock (&preadwritelock);
403 469
404 return res; 470 return res;
405} 471}
406#endif 472#endif
407 473
… …
410#endif 476#endif
411 477
412#if !HAVE_READAHEAD 478#if !HAVE_READAHEAD
413# define readahead aio_readahead 479# define readahead aio_readahead
414 480
415static char readahead_buf[4096];
416
417static ssize_t 481static ssize_t
418readahead (int fd, off_t offset, size_t count) 482readahead (int fd, off_t offset, size_t count)
419{ 483{
484 char readahead_buf[4096];
485
420 while (count > 0) 486 while (count > 0)
421 { 487 {
422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 488 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423 489
424 pread (fd, readahead_buf, len, offset); 490 pread (fd, readahead_buf, len, offset);
… …
428 494
429 errno = 0; 495 errno = 0;
430} 496}
431#endif 497#endif
432 498
499#if !HAVE_READDIR_R
500# define readdir_r aio_readdir_r
501
502static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
503
504static int
505readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
506{
507 struct dirent *e;
508 int errorno;
509
510 pthread_mutex_lock (&readdirlock);
511
512 e = readdir (dirp);
513 errorno = errno;
514
515 if (e)
516 {
517 *res = ent;
518 strcpy (ent->d_name, e->d_name);
519 }
520 else
521 *res = 0;
522
523 pthread_mutex_unlock (&readdirlock);
524
525 errno = errorno;
526 return e ? 0 : -1;
527}
528#endif
529
433/* sendfile always needs emulation */ 530/* sendfile always needs emulation */
434static ssize_t 531static ssize_t
435sendfile_ (int ofd, int ifd, off_t offset, size_t count) 532sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436{ 533{
437 ssize_t res; 534 ssize_t res;
438 535
439 if (!count) 536 if (!count)
440 return 0; 537 return 0;
441 538
539#if HAVE_SENDFILE
442#if __linux 540# if __linux
443 res = sendfile (ofd, ifd, &offset, count); 541 res = sendfile (ofd, ifd, &offset, count);
444 542
445#elif __freebsd 543# elif __freebsd
446 /* 544 /*
447 * Of course, the freebsd sendfile is a dire hack with no thoughts 545 * Of course, the freebsd sendfile is a dire hack with no thoughts
448 * wasted on making it similar to other i/o functions. 546 * wasted on making it similar to other I/O functions.
449 */ 547 */
450 { 548 {
451 off_t sbytes; 549 off_t sbytes;
452 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 550 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453 551
454 if (!res && errno == EAGAIN) 552 if (res < 0 && sbytes)
455 /* maybe on others, too, as usual, the manpage leaves you guessing */ 553 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
456 res = sbytes; 554 res = sbytes;
457 } 555 }
458 556
459#elif __hpux 557# elif __hpux
460 res = sendfile (ofd, ifd, offset, count, 0, 0); 558 res = sendfile (ofd, ifd, offset, count, 0, 0);
461 559
560# elif __solaris
561 {
562 struct sendfilevec vec;
563 size_t sbytes;
564
565 vec.sfv_fd = ifd;
566 vec.sfv_flag = 0;
567 vec.sfv_off = offset;
568 vec.sfv_len = count;
569
570 res = sendfilev (ofd, &vec, 1, &sbytes);
571
572 if (res < 0 && sbytes)
573 res = sbytes;
574 }
575
576# endif
462#else 577#else
463 res = -1; 578 res = -1;
464 errno = ENOSYS; 579 errno = ENOSYS;
465#endif 580#endif
466 581
582 if (res < 0
467 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK)) 583 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
584#if __solaris
585 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
586#endif
587 )
588 )
468 { 589 {
469 /* emulate sendfile. this is a major pain in the ass */ 590 /* emulate sendfile. this is a major pain in the ass */
470 char *buf = malloc (4096); 591 char buf[4096];
471 res = 0; 592 res = 0;
472 593
473 for (;;) 594 while (count)
474 { 595 {
475 ssize_t cnt; 596 ssize_t cnt;
476 597
477 cnt = pread (ifd, buf, 4096, offset); 598 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
478 599
479 if (cnt <= 0) 600 if (cnt <= 0)
480 { 601 {
481 if (cnt && !res) res = -1; 602 if (cnt && !res) res = -1;
482 break; 603 break;
483 } 604 }
484 605
485 cnt = write (ofd, buf, cnt); 606 cnt = write (ofd, buf, cnt);
486 607
487 if (cnt <= 0) 608 if (cnt <= 0)
488 { 609 {
489 if (cnt && !res) res = -1; 610 if (cnt && !res) res = -1;
490 break; 611 break;
491 } 612 }
492 613
493 offset += cnt; 614 offset += cnt;
494 res += cnt; 615 res += cnt;
616 count -= cnt;
495 } 617 }
496
497 {
498 int errorno = errno;
499 free (buf);
500 errno = errorno;
501 }
502 } 618 }
503 619
504 return res; 620 return res;
621}
622
623/* read a full directory */
624static int
625scandir_ (const char *path, void **namesp)
626{
627 DIR *dirp = opendir (path);
628 union
629 {
630 struct dirent d;
631 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
632 } u;
633 struct dirent *entp;
634 char *name, *names;
635 int memlen = 4096;
636 int memofs = 0;
637 int res = 0;
638 int errorno;
639
640 if (!dirp)
641 return -1;
642
643 names = malloc (memlen);
644
645 for (;;)
646 {
647 errno = 0, readdir_r (dirp, &u.d, &entp);
648
649 if (!entp)
650 break;
651
652 name = entp->d_name;
653
654 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
655 {
656 int len = strlen (name) + 1;
657
658 res++;
659
660 while (memofs + len > memlen)
661 {
662 memlen *= 2;
663 names = realloc (names, memlen);
664 if (!names)
665 break;
666 }
667
668 memcpy (names + memofs, name, len);
669 memofs += len;
670 }
671 }
672
673 errorno = errno;
674 closedir (dirp);
675
676 if (errorno)
677 {
678 free (names);
679 errno = errorno;
680 res = -1;
681 }
682
683 *namesp = (void *)names;
684 return res;
505} 685}
506 686
507/*****************************************************************************/ 687/*****************************************************************************/
508 688
509static void * 689static void *
… …
534 714
535 pthread_mutex_unlock (&reqlock); 715 pthread_mutex_unlock (&reqlock);
536 716
537 errno = 0; /* strictly unnecessary */ 717 errno = 0; /* strictly unnecessary */
538 718
539 type = req->type; 719 if (!req->cancelled)
540
541 switch (type) 720 switch (req->type)
542 { 721 {
543 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 722 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
544 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 723 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
545 724
546 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 725 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
547 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 726 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
548 727
549 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 728 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 729 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 730 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552 731
553 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 732 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
554 case REQ_CLOSE: req->result = close (req->fd); break; 733 case REQ_CLOSE: req->result = close (req->fd); break;
555 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 734 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 735 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
736 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
737 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
557 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 738 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558 739
559 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 740 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560 case REQ_FSYNC: req->result = fsync (req->fd); break; 741 case REQ_FSYNC: req->result = fsync (req->fd); break;
742 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
561 743
562 case REQ_QUIT: 744 case REQ_QUIT:
563 break; 745 break;
564 746
565 default: 747 default:
566 req->result = ENOSYS; 748 req->result = ENOSYS;
567 break; 749 break;
568 } 750 }
569 751
570 req->errorno = errno; 752 req->errorno = errno;
571 753
572 pthread_mutex_lock (&reslock); 754 pthread_mutex_lock (&reslock);
573 755
… …
591 while (type != REQ_QUIT); 773 while (type != REQ_QUIT);
592 774
593 return 0; 775 return 0;
594} 776}
595 777
778/*****************************************************************************/
779
780static void atfork_prepare (void)
781{
782 pthread_mutex_lock (&reqlock);
783 pthread_mutex_lock (&reslock);
784#if !HAVE_PREADWRITE
785 pthread_mutex_lock (&preadwritelock);
786#endif
787#if !HAVE_READDIR_R
788 pthread_mutex_lock (&readdirlock);
789#endif
790}
791
792static void atfork_parent (void)
793{
794#if !HAVE_READDIR_R
795 pthread_mutex_unlock (&readdirlock);
796#endif
797#if !HAVE_PREADWRITE
798 pthread_mutex_unlock (&preadwritelock);
799#endif
800 pthread_mutex_unlock (&reslock);
801 pthread_mutex_unlock (&reqlock);
802}
803
804static void atfork_child (void)
805{
806 aio_req prv;
807
808 started = 0;
809
810 while (reqs)
811 {
812 prv = reqs;
813 reqs = prv->next;
814 req_free (prv);
815 }
816
817 reqs = reqe = 0;
818
819 while (ress)
820 {
821 prv = ress;
822 ress = prv->next;
823 req_free (prv);
824 }
825
826 ress = rese = 0;
827
828 close (respipe [0]);
829 close (respipe [1]);
830 create_pipe ();
831
832 atfork_parent ();
833}
834
596#define dREQ \ 835#define dREQ \
597 aio_req req; \ 836 aio_req req; \
598 \ 837 \
599 if (SvOK (callback) && !SvROK (callback)) \ 838 if (SvOK (callback) && !SvROK (callback)) \
600 croak ("clalback must be undef or of reference type"); \ 839 croak ("callback must be undef or of reference type"); \
601 \ 840 \
602 Newz (0, req, 1, aio_cb); \ 841 Newz (0, req, 1, aio_cb); \
603 if (!req) \ 842 if (!req) \
604 croak ("out of memory during aio_req allocation"); \ 843 croak ("out of memory during aio_req allocation"); \
605 \ 844 \
606 req->callback = newSVsv (callback); 845 req->callback = newSVsv (callback)
846
847#define REQ_SEND \
848 req_send (req); \
849 \
850 if (GIMME_V != G_VOID) \
851 XPUSHs (req_sv (req));
607 852
608MODULE = IO::AIO PACKAGE = IO::AIO 853MODULE = IO::AIO PACKAGE = IO::AIO
609 854
610PROTOTYPES: ENABLE 855PROTOTYPES: ENABLE
611 856
612BOOT: 857BOOT:
613{ 858{
859 HV *stash = gv_stashpv ("IO::AIO", 1);
860 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
861 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
862 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
863
614 create_pipe (); 864 create_pipe ();
615 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 865 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
616} 866}
617 867
618void 868void
619min_parallel(nthreads) 869min_parallel (nthreads)
620 int nthreads 870 int nthreads
621 PROTOTYPE: $ 871 PROTOTYPE: $
622 872
623void 873void
624max_parallel(nthreads) 874max_parallel (nthreads)
625 int nthreads 875 int nthreads
626 PROTOTYPE: $ 876 PROTOTYPE: $
627 877
628int 878int
629max_outstanding(nreqs) 879max_outstanding (nreqs)
630 int nreqs 880 int nreqs
631 PROTOTYPE: $ 881 PROTOTYPE: $
632 CODE: 882 CODE:
633 RETVAL = max_outstanding; 883 RETVAL = max_outstanding;
634 max_outstanding = nreqs; 884 max_outstanding = nreqs;
635 885
636void 886void
637aio_open(pathname,flags,mode,callback=&PL_sv_undef) 887aio_open (pathname,flags,mode,callback=&PL_sv_undef)
638 SV * pathname 888 SV * pathname
639 int flags 889 int flags
640 int mode 890 int mode
641 SV * callback 891 SV * callback
642 PROTOTYPE: $$$;$ 892 PROTOTYPE: $$$;$
643 CODE: 893 PPCODE:
644{ 894{
645 dREQ; 895 dREQ;
646 896
647 req->type = REQ_OPEN; 897 req->type = REQ_OPEN;
648 req->data = newSVsv (pathname); 898 req->data = newSVsv (pathname);
649 req->dataptr = SvPVbyte_nolen (req->data); 899 req->dataptr = SvPVbyte_nolen (req->data);
650 req->fd = flags; 900 req->fd = flags;
651 req->mode = mode; 901 req->mode = mode;
652 902
653 send_req (req); 903 REQ_SEND;
654} 904}
655 905
656void 906void
657aio_close(fh,callback=&PL_sv_undef) 907aio_close (fh,callback=&PL_sv_undef)
658 SV * fh 908 SV * fh
659 SV * callback 909 SV * callback
660 PROTOTYPE: $;$ 910 PROTOTYPE: $;$
661 ALIAS: 911 ALIAS:
662 aio_close = REQ_CLOSE 912 aio_close = REQ_CLOSE
663 aio_fsync = REQ_FSYNC 913 aio_fsync = REQ_FSYNC
664 aio_fdatasync = REQ_FDATASYNC 914 aio_fdatasync = REQ_FDATASYNC
665 CODE: 915 PPCODE:
666{ 916{
667 dREQ; 917 dREQ;
668 918
669 req->type = ix; 919 req->type = ix;
670 req->fh = newSVsv (fh); 920 req->fh = newSVsv (fh);
671 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 921 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
672 922
673 send_req (req); 923 REQ_SEND (req);
674} 924}
675 925
676void 926void
677aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 927aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
678 SV * fh 928 SV * fh
679 UV offset 929 UV offset
680 UV length 930 UV length
681 SV * data 931 SV * data
682 UV dataoffset 932 UV dataoffset
683 SV * callback 933 SV * callback
684 ALIAS: 934 ALIAS:
685 aio_read = REQ_READ 935 aio_read = REQ_READ
686 aio_write = REQ_WRITE 936 aio_write = REQ_WRITE
687 PROTOTYPE: $$$$$;$ 937 PROTOTYPE: $$$$$;$
688 CODE: 938 PPCODE:
689{ 939{
690 aio_req req; 940 aio_req req;
691 STRLEN svlen; 941 STRLEN svlen;
692 char *svptr = SvPVbyte (data, svlen); 942 char *svptr = SvPVbyte (data, svlen);
693 943
… …
731 { 981 {
732 SvREADONLY_on (data); 982 SvREADONLY_on (data);
733 req->data2ptr = (void *)data; 983 req->data2ptr = (void *)data;
734 } 984 }
735 985
736 send_req (req); 986 REQ_SEND;
737 } 987 }
738} 988}
739 989
740void 990void
741aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 991aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
742 SV * out_fh 992 SV * out_fh
743 SV * in_fh 993 SV * in_fh
744 UV in_offset 994 UV in_offset
745 UV length 995 UV length
746 SV * callback 996 SV * callback
747 PROTOTYPE: $$$$;$ 997 PROTOTYPE: $$$$;$
748 CODE: 998 PPCODE:
749{ 999{
750 dREQ; 1000 dREQ;
751 1001
752 req->type = REQ_SENDFILE; 1002 req->type = REQ_SENDFILE;
753 req->fh = newSVsv (out_fh); 1003 req->fh = newSVsv (out_fh);
… …
755 req->fh2 = newSVsv (in_fh); 1005 req->fh2 = newSVsv (in_fh);
756 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1006 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757 req->offset = in_offset; 1007 req->offset = in_offset;
758 req->length = length; 1008 req->length = length;
759 1009
760 send_req (req); 1010 REQ_SEND;
761} 1011}
762 1012
763void 1013void
764aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1014aio_readahead (fh,offset,length,callback=&PL_sv_undef)
765 SV * fh 1015 SV * fh
766 UV offset 1016 UV offset
767 IV length 1017 IV length
768 SV * callback 1018 SV * callback
769 PROTOTYPE: $$$;$ 1019 PROTOTYPE: $$$;$
770 CODE: 1020 PPCODE:
771{ 1021{
772 dREQ; 1022 dREQ;
773 1023
774 req->type = REQ_READAHEAD; 1024 req->type = REQ_READAHEAD;
775 req->fh = newSVsv (fh); 1025 req->fh = newSVsv (fh);
776 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1026 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777 req->offset = offset; 1027 req->offset = offset;
778 req->length = length; 1028 req->length = length;
779 1029
780 send_req (req); 1030 REQ_SEND;
781} 1031}
782 1032
783void 1033void
784aio_stat(fh_or_path,callback=&PL_sv_undef) 1034aio_stat (fh_or_path,callback=&PL_sv_undef)
785 SV * fh_or_path 1035 SV * fh_or_path
786 SV * callback 1036 SV * callback
787 ALIAS: 1037 ALIAS:
788 aio_stat = REQ_STAT 1038 aio_stat = REQ_STAT
789 aio_lstat = REQ_LSTAT 1039 aio_lstat = REQ_LSTAT
790 CODE: 1040 PPCODE:
791{ 1041{
792 dREQ; 1042 dREQ;
793 1043
794 New (0, req->statdata, 1, Stat_t); 1044 New (0, req->statdata, 1, Stat_t);
795 if (!req->statdata) 1045 if (!req->statdata)
796 { 1046 {
797 free_req (req); 1047 req_free (req);
798 croak ("out of memory during aio_req->statdata allocation"); 1048 croak ("out of memory during aio_req->statdata allocation");
799 } 1049 }
800 1050
801 if (SvPOK (fh_or_path)) 1051 if (SvPOK (fh_or_path))
802 { 1052 {
… …
809 req->type = REQ_FSTAT; 1059 req->type = REQ_FSTAT;
810 req->fh = newSVsv (fh_or_path); 1060 req->fh = newSVsv (fh_or_path);
811 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1061 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
812 } 1062 }
813 1063
814 send_req (req); 1064 REQ_SEND;
815} 1065}
816 1066
817void 1067void
818aio_unlink(pathname,callback=&PL_sv_undef) 1068aio_unlink (pathname,callback=&PL_sv_undef)
819 SV * pathname 1069 SV * pathname
820 SV * callback 1070 SV * callback
821 ALIAS: 1071 ALIAS:
822 aio_unlink = REQ_UNLINK 1072 aio_unlink = REQ_UNLINK
823 aio_rmdir = REQ_RMDIR 1073 aio_rmdir = REQ_RMDIR
1074 aio_readdir = REQ_READDIR
824 CODE: 1075 PPCODE:
825{ 1076{
826 dREQ; 1077 dREQ;
827 1078
828 req->type = ix; 1079 req->type = ix;
829 req->data = newSVsv (pathname); 1080 req->data = newSVsv (pathname);
830 req->dataptr = SvPVbyte_nolen (req->data); 1081 req->dataptr = SvPVbyte_nolen (req->data);
831 1082
832 send_req (req); 1083 REQ_SEND;
833} 1084}
834 1085
835void 1086void
836aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1087aio_link (oldpath,newpath,callback=&PL_sv_undef)
837 SV * oldpath 1088 SV * oldpath
838 SV * newpath 1089 SV * newpath
839 SV * callback 1090 SV * callback
1091 ALIAS:
1092 aio_link = REQ_LINK
1093 aio_symlink = REQ_SYMLINK
1094 aio_rename = REQ_RENAME
840 CODE: 1095 PPCODE:
841{ 1096{
842 dREQ; 1097 dREQ;
843 1098
844 req->type = REQ_SYMLINK; 1099 req->type = ix;
845 req->fh = newSVsv (oldpath); 1100 req->fh = newSVsv (oldpath);
846 req->data2ptr = SvPVbyte_nolen (req->fh); 1101 req->data2ptr = SvPVbyte_nolen (req->fh);
847 req->data = newSVsv (newpath); 1102 req->data = newSVsv (newpath);
848 req->dataptr = SvPVbyte_nolen (req->data); 1103 req->dataptr = SvPVbyte_nolen (req->data);
849 1104
850 send_req (req); 1105 REQ_SEND;
851} 1106}
852 1107
1108#if 0
1109
1110# undocumented, because it does not cancel active requests
853void 1111void
1112cancel_most_requests ()
1113 PROTOTYPE:
1114 CODE:
1115{
1116 aio_req *req;
1117
1118 pthread_mutex_lock (&reqlock);
1119 for (req = reqs; req; req = req->next)
1120 req->flags |= 1;
1121 pthread_mutex_unlock (&reqlock);
1122
1123 pthread_mutex_lock (&reslock);
1124 for (req = ress; req; req = req->next)
1125 req->flags |= 1;
1126 pthread_mutex_unlock (&reslock);
1127}
1128
1129#endif
1130
1131void
854flush() 1132flush ()
855 PROTOTYPE: 1133 PROTOTYPE:
856 CODE: 1134 CODE:
857 while (nreqs) 1135 while (nreqs)
858 { 1136 {
859 poll_wait (); 1137 poll_wait ();
… …
899 CODE: 1177 CODE:
900 RETVAL = nreqs; 1178 RETVAL = nreqs;
901 OUTPUT: 1179 OUTPUT:
902 RETVAL 1180 RETVAL
903 1181
1182MODULE = IO::AIO PACKAGE = IO::AIO::CB
1183
1184void
1185cancel (aio_req_ornot req)
1186 PROTOTYPE:
1187 CODE:
1188 req->cancelled = 1;
1189

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