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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC vs.
Revision 1.44 by root, Sat Oct 21 23:20:29 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
… …
30# else 32# else
31# error sendfile support requested but not available 33# error sendfile support requested but not available
32# endif 34# endif
33#endif 35#endif
34 36
37/* used for struct dirent, AIX doesn't provide it */
38#ifndef NAME_MAX
39# define NAME_MAX 4096
40#endif
41
35#if __ia64 42#if __ia64
36# define STACKSIZE 65536 43# define STACKSIZE 65536
37#else 44#else
38# define STACKSIZE 4096 45# define STACKSIZE 8192
39#endif 46#endif
40 47
41enum { 48enum {
42 REQ_QUIT, 49 REQ_QUIT,
43 REQ_OPEN, REQ_CLOSE, 50 REQ_OPEN, REQ_CLOSE,
44 REQ_READ, REQ_WRITE, REQ_READAHEAD, 51 REQ_READ, REQ_WRITE, REQ_READAHEAD,
45 REQ_SENDFILE, 52 REQ_SENDFILE,
46 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 53 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47 REQ_FSYNC, REQ_FDATASYNC, 54 REQ_FSYNC, REQ_FDATASYNC,
48 REQ_UNLINK, REQ_RMDIR, 55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
49 REQ_SYMLINK, 56 REQ_READDIR,
57 REQ_LINK, REQ_SYMLINK,
58 REQ_GROUP,
50}; 59};
51 60
61#define AIO_REQ_KLASS "IO::AIO::REQ"
62#define AIO_GRP_KLASS "IO::AIO::GRP"
63
52typedef struct aio_cb { 64typedef struct aio_cb
65{
66 struct aio_cb *grp, *grp_prev, *grp_next;
67
53 struct aio_cb *volatile next; 68 struct aio_cb *volatile next;
54 69
55 int type; 70 SV *self; /* the perl counterpart of this request, if any */
56 71
57 int fd, fd2; 72 SV *data, *callback;
73 SV *fh, *fh2;
74 void *dataptr, *data2ptr;
75 Stat_t *statdata;
58 off_t offset; 76 off_t offset;
59 size_t length; 77 size_t length;
60 ssize_t result; 78 ssize_t result;
79
80 int type;
81 int fd, fd2;
82 int errorno;
83 STRLEN dataoffset;
61 mode_t mode; /* open */ 84 mode_t mode; /* open */
62 int errorno; 85 unsigned char cancelled;
63 SV *data, *callback;
64 SV *fh, *fh2;
65 void *dataptr, *data2ptr;
66 STRLEN dataoffset;
67
68 Stat_t *statdata;
69} aio_cb; 86} aio_cb;
70 87
71typedef aio_cb *aio_req; 88typedef aio_cb *aio_req;
89typedef aio_cb *aio_req_ornot;
90typedef aio_cb *aio_group;
72 91
73static int started, wanted; 92static int started, wanted;
74static volatile int nreqs; 93static volatile int nreqs;
75static int max_outstanding = 1<<30; 94static int max_outstanding = 1<<30;
76static int respipe [2]; 95static int respipe [2];
… …
80static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 99static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81 100
82static volatile aio_req reqs, reqe; /* queue start, queue end */ 101static volatile aio_req reqs, reqe; /* queue start, queue end */
83static volatile aio_req ress, rese; /* queue start, queue end */ 102static volatile aio_req ress, rese; /* queue start, queue end */
84 103
104/* must be called at most once */
105static SV *req_sv (aio_req req, const char *klass)
106{
107 req->self = (SV *)newHV ();
108 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
109
110 return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1)));
111}
112
113static aio_req SvAIO_REQ (SV *sv, const char *klass)
114{
115 if (!sv_derived_from (sv, klass) || !SvROK (sv))
116 croak ("object of class %s expected", klass);
117
118 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
119
120 return mg ? (aio_req)mg->mg_ptr : 0;
121}
122
85static void free_req (aio_req req) 123static void req_free (aio_req req)
86{ 124{
125 if (req->self)
126 {
127 sv_unmagic (req->self, PERL_MAGIC_ext);
128 SvREFCNT_dec (req->self);
129 }
130
87 if (req->data) 131 if (req->data)
88 SvREFCNT_dec (req->data); 132 SvREFCNT_dec (req->data);
89 133
90 if (req->fh) 134 if (req->fh)
91 SvREFCNT_dec (req->fh); 135 SvREFCNT_dec (req->fh);
… …
96 if (req->statdata) 140 if (req->statdata)
97 Safefree (req->statdata); 141 Safefree (req->statdata);
98 142
99 if (req->callback) 143 if (req->callback)
100 SvREFCNT_dec (req->callback); 144 SvREFCNT_dec (req->callback);
145
146 if (req->type == REQ_READDIR && req->result >= 0)
147 free (req->data2ptr);
101 148
102 Safefree (req); 149 Safefree (req);
103} 150}
104 151
105static void 152static void
… …
170 PL_statcache = *(req->statdata); 217 PL_statcache = *(req->statdata);
171 } 218 }
172 219
173 ENTER; 220 ENTER;
174 PUSHMARK (SP); 221 PUSHMARK (SP);
175 XPUSHs (sv_2mortal (newSViv (req->result)));
176 222
177 if (req->type == REQ_OPEN) 223 if (req->type == REQ_READDIR)
178 { 224 {
179 /* convert fd to fh */ 225 SV *rv = &PL_sv_undef;
180 SV *fh;
181 226
182 PUTBACK; 227 if (req->result >= 0)
183 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 228 {
184 SPAGAIN; 229 char *buf = req->data2ptr;
230 AV *av = newAV ();
185 231
186 fh = SvREFCNT_inc (POPs); 232 while (req->result)
233 {
234 SV *sv = newSVpv (buf, 0);
187 235
236 av_push (av, sv);
237 buf += SvCUR (sv) + 1;
238 req->result--;
239 }
240
241 rv = sv_2mortal (newRV_noinc ((SV *)av));
242 }
243
188 PUSHMARK (SP); 244 XPUSHs (rv);
189 XPUSHs (sv_2mortal (fh));
190 } 245 }
246 else
247 {
248 XPUSHs (sv_2mortal (newSViv (req->result)));
191 249
250 if (req->type == REQ_OPEN)
251 {
252 /* convert fd to fh */
253 SV *fh;
254
255 PUTBACK;
256 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
257 SPAGAIN;
258
259 fh = SvREFCNT_inc (POPs);
260
261 PUSHMARK (SP);
262 XPUSHs (sv_2mortal (fh));
263 }
264 }
265
192 if (SvOK (req->callback)) 266 if (SvOK (req->callback) && !req->cancelled)
193 { 267 {
194 PUTBACK; 268 PUTBACK;
195 call_sv (req->callback, G_VOID | G_EVAL); 269 call_sv (req->callback, G_VOID | G_EVAL);
196 SPAGAIN; 270 SPAGAIN;
197 271
198 if (SvTRUE (ERRSV)) 272 if (SvTRUE (ERRSV))
199 { 273 {
200 free_req (req); 274 req_free (req);
201 croak (0); 275 croak (0);
202 } 276 }
203 } 277 }
204 278
205 LEAVE; 279 LEAVE;
206 280
207 errno = errorno; 281 errno = errorno;
208 count++; 282 count++;
209 } 283 }
210 284
211 free_req (req); 285 req_free (req);
212 } 286 }
213 287
214 return count; 288 return count;
215} 289}
216 290
… …
235 309
236 sigprocmask (SIG_SETMASK, &oldsigset, 0); 310 sigprocmask (SIG_SETMASK, &oldsigset, 0);
237} 311}
238 312
239static void 313static void
240send_req (aio_req req) 314req_send (aio_req req)
241{ 315{
242 while (started < wanted && nreqs >= started) 316 while (started < wanted && nreqs >= started)
243 start_thread (); 317 start_thread ();
244 318
245 nreqs++; 319 nreqs++;
… …
276{ 350{
277 aio_req req; 351 aio_req req;
278 Newz (0, req, 1, aio_cb); 352 Newz (0, req, 1, aio_cb);
279 req->type = REQ_QUIT; 353 req->type = REQ_QUIT;
280 354
281 send_req (req); 355 req_send (req);
282} 356}
283 357
284static void min_parallel (int nthreads) 358static void min_parallel (int nthreads)
285{ 359{
286 if (wanted < nthreads) 360 if (wanted < nthreads)
… …
315 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 389 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316 croak ("cannot set result pipe to nonblocking mode"); 390 croak ("cannot set result pipe to nonblocking mode");
317 391
318 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 392 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319 croak ("cannot set result pipe to nonblocking mode"); 393 croak ("cannot set result pipe to nonblocking mode");
320}
321
322static void atfork_prepare (void)
323{
324 pthread_mutex_lock (&reqlock);
325 pthread_mutex_lock (&reslock);
326}
327
328static void atfork_parent (void)
329{
330 pthread_mutex_unlock (&reslock);
331 pthread_mutex_unlock (&reqlock);
332}
333
334static void atfork_child (void)
335{
336 aio_req prv;
337
338 started = 0;
339
340 while (reqs)
341 {
342 prv = reqs;
343 reqs = prv->next;
344 free_req (prv);
345 }
346
347 reqs = reqe = 0;
348
349 while (ress)
350 {
351 prv = ress;
352 ress = prv->next;
353 free_req (prv);
354 }
355
356 ress = rese = 0;
357
358 close (respipe [0]);
359 close (respipe [1]);
360 create_pipe ();
361
362 atfork_parent ();
363} 394}
364 395
365/*****************************************************************************/ 396/*****************************************************************************/
366/* work around various missing functions */ 397/* work around various missing functions */
367 398
… …
372/* 403/*
373 * make our pread/pwrite safe against themselves, but not against 404 * make our pread/pwrite safe against themselves, but not against
374 * normal read/write by using a mutex. slows down execution a lot, 405 * normal read/write by using a mutex. slows down execution a lot,
375 * but that's your problem, not mine. 406 * but that's your problem, not mine.
376 */ 407 */
377static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 408static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
378 409
379static ssize_t 410static ssize_t
380pread (int fd, void *buf, size_t count, off_t offset) 411pread (int fd, void *buf, size_t count, off_t offset)
381{ 412{
382 ssize_t res; 413 ssize_t res;
383 off_t ooffset; 414 off_t ooffset;
384 415
385 pthread_mutex_lock (&iolock); 416 pthread_mutex_lock (&preadwritelock);
386 ooffset = lseek (fd, 0, SEEK_CUR); 417 ooffset = lseek (fd, 0, SEEK_CUR);
387 lseek (fd, offset, SEEK_SET); 418 lseek (fd, offset, SEEK_SET);
388 res = read (fd, buf, count); 419 res = read (fd, buf, count);
389 lseek (fd, ooffset, SEEK_SET); 420 lseek (fd, ooffset, SEEK_SET);
390 pthread_mutex_unlock (&iolock); 421 pthread_mutex_unlock (&preadwritelock);
391 422
392 return res; 423 return res;
393} 424}
394 425
395static ssize_t 426static ssize_t
396pwrite (int fd, void *buf, size_t count, off_t offset) 427pwrite (int fd, void *buf, size_t count, off_t offset)
397{ 428{
398 ssize_t res; 429 ssize_t res;
399 off_t ooffset; 430 off_t ooffset;
400 431
401 pthread_mutex_lock (&iolock); 432 pthread_mutex_lock (&preadwritelock);
402 ooffset = lseek (fd, 0, SEEK_CUR); 433 ooffset = lseek (fd, 0, SEEK_CUR);
403 lseek (fd, offset, SEEK_SET); 434 lseek (fd, offset, SEEK_SET);
404 res = write (fd, buf, count); 435 res = write (fd, buf, count);
405 lseek (fd, offset, SEEK_SET); 436 lseek (fd, offset, SEEK_SET);
406 pthread_mutex_unlock (&iolock); 437 pthread_mutex_unlock (&preadwritelock);
407 438
408 return res; 439 return res;
409} 440}
410#endif 441#endif
411 442
… …
414#endif 445#endif
415 446
416#if !HAVE_READAHEAD 447#if !HAVE_READAHEAD
417# define readahead aio_readahead 448# define readahead aio_readahead
418 449
419static char readahead_buf[4096];
420
421static ssize_t 450static ssize_t
422readahead (int fd, off_t offset, size_t count) 451readahead (int fd, off_t offset, size_t count)
423{ 452{
453 char readahead_buf[4096];
454
424 while (count > 0) 455 while (count > 0)
425 { 456 {
426 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 457 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
427 458
428 pread (fd, readahead_buf, len, offset); 459 pread (fd, readahead_buf, len, offset);
… …
432 463
433 errno = 0; 464 errno = 0;
434} 465}
435#endif 466#endif
436 467
468#if !HAVE_READDIR_R
469# define readdir_r aio_readdir_r
470
471static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
472
473static int
474readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
475{
476 struct dirent *e;
477 int errorno;
478
479 pthread_mutex_lock (&readdirlock);
480
481 e = readdir (dirp);
482 errorno = errno;
483
484 if (e)
485 {
486 *res = ent;
487 strcpy (ent->d_name, e->d_name);
488 }
489 else
490 *res = 0;
491
492 pthread_mutex_unlock (&readdirlock);
493
494 errno = errorno;
495 return e ? 0 : -1;
496}
497#endif
498
437/* sendfile always needs emulation */ 499/* sendfile always needs emulation */
438static ssize_t 500static ssize_t
439sendfile_ (int ofd, int ifd, off_t offset, size_t count) 501sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440{ 502{
441 ssize_t res; 503 ssize_t res;
442 504
443 if (!count) 505 if (!count)
444 return 0; 506 return 0;
445 507
446#if HAVE_SENDFILE 508#if HAVE_SENDFILE
447# if __linux 509# if __linux
448 res = sendfile (ofd, ifd, &offset, count); 510 res = sendfile (ofd, ifd, &offset, count);
449 511
450# elif __freebsd 512# elif __freebsd
451 /* 513 /*
452 * Of course, the freebsd sendfile is a dire hack with no thoughts 514 * Of course, the freebsd sendfile is a dire hack with no thoughts
453 * wasted on making it similar to other I/O functions. 515 * wasted on making it similar to other I/O functions.
454 */ 516 */
455 { 517 {
456 off_t sbytes; 518 off_t sbytes;
457 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 519 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458 520
459 if (res < 0 && sbytes) 521 if (res < 0 && sbytes)
460 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 522 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461 res = sbytes; 523 res = sbytes;
462 } 524 }
463 525
464# elif __hpux 526# elif __hpux
465 res = sendfile (ofd, ifd, offset, count, 0, 0); 527 res = sendfile (ofd, ifd, offset, count, 0, 0);
466 528
467# elif __solaris 529# elif __solaris
468 { 530 {
469 struct sendfilevec vec; 531 struct sendfilevec vec;
470 size_t sbytes; 532 size_t sbytes;
471 533
472 vec.sfv_fd = ifd; 534 vec.sfv_fd = ifd;
473 vec.sfv_flag = 0; 535 vec.sfv_flag = 0;
474 vec.sfv_off = offset; 536 vec.sfv_off = offset;
475 vec.sfv_len = count; 537 vec.sfv_len = count;
476 538
477 res = sendfilev (ofd, &vec, 1, &sbytes); 539 res = sendfilev (ofd, &vec, 1, &sbytes);
478 540
479 if (res < 0 && sbytes) 541 if (res < 0 && sbytes)
480 res = sbytes; 542 res = sbytes;
481 } 543 }
482 544
483# else
484 res = -1;
485 errno = ENOSYS;
486# endif 545# endif
546#else
547 res = -1;
548 errno = ENOSYS;
487#endif 549#endif
488 550
489 if (res < 0 551 if (res < 0
490 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 552 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
491#if __solaris 553#if __solaris
492 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 554 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
493#endif 555#endif
494 ) 556 )
495 ) 557 )
496 { 558 {
497 /* emulate sendfile. this is a major pain in the ass */ 559 /* emulate sendfile. this is a major pain in the ass */
498 char *buf = malloc (4096); 560 char buf[4096];
499 res = 0; 561 res = 0;
500 562
501 for (;;) 563 while (count)
502 { 564 {
503 ssize_t cnt; 565 ssize_t cnt;
504 566
505 cnt = pread (ifd, buf, 4096, offset); 567 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
506 568
507 if (cnt <= 0) 569 if (cnt <= 0)
508 { 570 {
509 if (cnt && !res) res = -1; 571 if (cnt && !res) res = -1;
510 break; 572 break;
511 } 573 }
512 574
513 cnt = write (ofd, buf, cnt); 575 cnt = write (ofd, buf, cnt);
514 576
515 if (cnt <= 0) 577 if (cnt <= 0)
516 { 578 {
517 if (cnt && !res) res = -1; 579 if (cnt && !res) res = -1;
518 break; 580 break;
519 } 581 }
520 582
521 offset += cnt; 583 offset += cnt;
522 res += cnt; 584 res += cnt;
585 count -= cnt;
523 } 586 }
524
525 {
526 int errorno = errno;
527 free (buf);
528 errno = errorno;
529 }
530 } 587 }
531 588
532 return res; 589 return res;
590}
591
592/* read a full directory */
593static int
594scandir_ (const char *path, void **namesp)
595{
596 DIR *dirp = opendir (path);
597 union
598 {
599 struct dirent d;
600 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
601 } u;
602 struct dirent *entp;
603 char *name, *names;
604 int memlen = 4096;
605 int memofs = 0;
606 int res = 0;
607 int errorno;
608
609 if (!dirp)
610 return -1;
611
612 names = malloc (memlen);
613
614 for (;;)
615 {
616 errno = 0, readdir_r (dirp, &u.d, &entp);
617
618 if (!entp)
619 break;
620
621 name = entp->d_name;
622
623 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
624 {
625 int len = strlen (name) + 1;
626
627 res++;
628
629 while (memofs + len > memlen)
630 {
631 memlen *= 2;
632 names = realloc (names, memlen);
633 if (!names)
634 break;
635 }
636
637 memcpy (names + memofs, name, len);
638 memofs += len;
639 }
640 }
641
642 errorno = errno;
643 closedir (dirp);
644
645 if (errorno)
646 {
647 free (names);
648 errno = errorno;
649 res = -1;
650 }
651
652 *namesp = (void *)names;
653 return res;
533} 654}
534 655
535/*****************************************************************************/ 656/*****************************************************************************/
536 657
537static void * 658static void *
… …
562 683
563 pthread_mutex_unlock (&reqlock); 684 pthread_mutex_unlock (&reqlock);
564 685
565 errno = 0; /* strictly unnecessary */ 686 errno = 0; /* strictly unnecessary */
566 687
567 type = req->type; 688 if (!req->cancelled)
568
569 switch (type) 689 switch (req->type)
570 { 690 {
571 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 691 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
572 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 692 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
573 693
574 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 694 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
575 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 695 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
576 696
577 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
578 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
579 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
580 700
581 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 701 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
582 case REQ_CLOSE: req->result = close (req->fd); break; 702 case REQ_CLOSE: req->result = close (req->fd); break;
583 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
584 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 704 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
705 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
706 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
585 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
586 708
587 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
588 case REQ_FSYNC: req->result = fsync (req->fd); break; 710 case REQ_FSYNC: req->result = fsync (req->fd); break;
711 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
589 712
590 case REQ_QUIT: 713 case REQ_QUIT:
591 break; 714 break;
592 715
593 default: 716 default:
594 req->result = ENOSYS; 717 req->result = ENOSYS;
595 break; 718 break;
596 } 719 }
597 720
598 req->errorno = errno; 721 req->errorno = errno;
599 722
600 pthread_mutex_lock (&reslock); 723 pthread_mutex_lock (&reslock);
601 724
… …
619 while (type != REQ_QUIT); 742 while (type != REQ_QUIT);
620 743
621 return 0; 744 return 0;
622} 745}
623 746
747/*****************************************************************************/
748
749static void atfork_prepare (void)
750{
751 pthread_mutex_lock (&reqlock);
752 pthread_mutex_lock (&reslock);
753#if !HAVE_PREADWRITE
754 pthread_mutex_lock (&preadwritelock);
755#endif
756#if !HAVE_READDIR_R
757 pthread_mutex_lock (&readdirlock);
758#endif
759}
760
761static void atfork_parent (void)
762{
763#if !HAVE_READDIR_R
764 pthread_mutex_unlock (&readdirlock);
765#endif
766#if !HAVE_PREADWRITE
767 pthread_mutex_unlock (&preadwritelock);
768#endif
769 pthread_mutex_unlock (&reslock);
770 pthread_mutex_unlock (&reqlock);
771}
772
773static void atfork_child (void)
774{
775 aio_req prv;
776
777 started = 0;
778
779 while (reqs)
780 {
781 prv = reqs;
782 reqs = prv->next;
783 req_free (prv);
784 }
785
786 reqs = reqe = 0;
787
788 while (ress)
789 {
790 prv = ress;
791 ress = prv->next;
792 req_free (prv);
793 }
794
795 ress = rese = 0;
796
797 close (respipe [0]);
798 close (respipe [1]);
799 create_pipe ();
800
801 atfork_parent ();
802}
803
624#define dREQ \ 804#define dREQ \
625 aio_req req; \ 805 aio_req req; \
626 \ 806 \
627 if (SvOK (callback) && !SvROK (callback)) \ 807 if (SvOK (callback) && !SvROK (callback)) \
628 croak ("clalback must be undef or of reference type"); \ 808 croak ("callback must be undef or of reference type"); \
629 \ 809 \
630 Newz (0, req, 1, aio_cb); \ 810 Newz (0, req, 1, aio_cb); \
631 if (!req) \ 811 if (!req) \
632 croak ("out of memory during aio_req allocation"); \ 812 croak ("out of memory during aio_req allocation"); \
633 \ 813 \
634 req->callback = newSVsv (callback); 814 req->callback = newSVsv (callback)
815
816#define REQ_SEND \
817 req_send (req); \
818 \
819 if (GIMME_V != G_VOID) \
820 XPUSHs (req_sv (req, AIO_REQ_KLASS));
635 821
636MODULE = IO::AIO PACKAGE = IO::AIO 822MODULE = IO::AIO PACKAGE = IO::AIO
637 823
638PROTOTYPES: ENABLE 824PROTOTYPES: ENABLE
639 825
640BOOT: 826BOOT:
641{ 827{
828 HV *stash = gv_stashpv ("IO::AIO", 1);
829 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
830 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
831 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
832
642 create_pipe (); 833 create_pipe ();
643 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
644} 835}
645 836
646void 837void
647min_parallel(nthreads) 838min_parallel (nthreads)
648 int nthreads 839 int nthreads
649 PROTOTYPE: $ 840 PROTOTYPE: $
650 841
651void 842void
652max_parallel(nthreads) 843max_parallel (nthreads)
653 int nthreads 844 int nthreads
654 PROTOTYPE: $ 845 PROTOTYPE: $
655 846
656int 847int
657max_outstanding(nreqs) 848max_outstanding (nreqs)
658 int nreqs 849 int nreqs
659 PROTOTYPE: $ 850 PROTOTYPE: $
660 CODE: 851 CODE:
661 RETVAL = max_outstanding; 852 RETVAL = max_outstanding;
662 max_outstanding = nreqs; 853 max_outstanding = nreqs;
663 854
664void 855void
665aio_open(pathname,flags,mode,callback=&PL_sv_undef) 856aio_open (pathname,flags,mode,callback=&PL_sv_undef)
666 SV * pathname 857 SV * pathname
667 int flags 858 int flags
668 int mode 859 int mode
669 SV * callback 860 SV * callback
670 PROTOTYPE: $$$;$ 861 PROTOTYPE: $$$;$
671 CODE: 862 PPCODE:
672{ 863{
673 dREQ; 864 dREQ;
674 865
675 req->type = REQ_OPEN; 866 req->type = REQ_OPEN;
676 req->data = newSVsv (pathname); 867 req->data = newSVsv (pathname);
677 req->dataptr = SvPVbyte_nolen (req->data); 868 req->dataptr = SvPVbyte_nolen (req->data);
678 req->fd = flags; 869 req->fd = flags;
679 req->mode = mode; 870 req->mode = mode;
680 871
681 send_req (req); 872 REQ_SEND;
682} 873}
683 874
684void 875void
685aio_close(fh,callback=&PL_sv_undef) 876aio_close (fh,callback=&PL_sv_undef)
686 SV * fh 877 SV * fh
687 SV * callback 878 SV * callback
688 PROTOTYPE: $;$ 879 PROTOTYPE: $;$
689 ALIAS: 880 ALIAS:
690 aio_close = REQ_CLOSE 881 aio_close = REQ_CLOSE
691 aio_fsync = REQ_FSYNC 882 aio_fsync = REQ_FSYNC
692 aio_fdatasync = REQ_FDATASYNC 883 aio_fdatasync = REQ_FDATASYNC
693 CODE: 884 PPCODE:
694{ 885{
695 dREQ; 886 dREQ;
696 887
697 req->type = ix; 888 req->type = ix;
698 req->fh = newSVsv (fh); 889 req->fh = newSVsv (fh);
699 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
700 891
701 send_req (req); 892 REQ_SEND (req);
702} 893}
703 894
704void 895void
705aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
706 SV * fh 897 SV * fh
707 UV offset 898 UV offset
708 UV length 899 UV length
709 SV * data 900 SV * data
710 UV dataoffset 901 UV dataoffset
711 SV * callback 902 SV * callback
712 ALIAS: 903 ALIAS:
713 aio_read = REQ_READ 904 aio_read = REQ_READ
714 aio_write = REQ_WRITE 905 aio_write = REQ_WRITE
715 PROTOTYPE: $$$$$;$ 906 PROTOTYPE: $$$$$;$
716 CODE: 907 PPCODE:
717{ 908{
718 aio_req req; 909 aio_req req;
719 STRLEN svlen; 910 STRLEN svlen;
720 char *svptr = SvPVbyte (data, svlen); 911 char *svptr = SvPVbyte (data, svlen);
721 912
… …
759 { 950 {
760 SvREADONLY_on (data); 951 SvREADONLY_on (data);
761 req->data2ptr = (void *)data; 952 req->data2ptr = (void *)data;
762 } 953 }
763 954
764 send_req (req); 955 REQ_SEND;
765 } 956 }
766} 957}
767 958
768void 959void
769aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
770 SV * out_fh 961 SV * out_fh
771 SV * in_fh 962 SV * in_fh
772 UV in_offset 963 UV in_offset
773 UV length 964 UV length
774 SV * callback 965 SV * callback
775 PROTOTYPE: $$$$;$ 966 PROTOTYPE: $$$$;$
776 CODE: 967 PPCODE:
777{ 968{
778 dREQ; 969 dREQ;
779 970
780 req->type = REQ_SENDFILE; 971 req->type = REQ_SENDFILE;
781 req->fh = newSVsv (out_fh); 972 req->fh = newSVsv (out_fh);
… …
783 req->fh2 = newSVsv (in_fh); 974 req->fh2 = newSVsv (in_fh);
784 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
785 req->offset = in_offset; 976 req->offset = in_offset;
786 req->length = length; 977 req->length = length;
787 978
788 send_req (req); 979 REQ_SEND;
789} 980}
790 981
791void 982void
792aio_readahead(fh,offset,length,callback=&PL_sv_undef) 983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
793 SV * fh 984 SV * fh
794 UV offset 985 UV offset
795 IV length 986 IV length
796 SV * callback 987 SV * callback
797 PROTOTYPE: $$$;$ 988 PROTOTYPE: $$$;$
798 CODE: 989 PPCODE:
799{ 990{
800 dREQ; 991 dREQ;
801 992
802 req->type = REQ_READAHEAD; 993 req->type = REQ_READAHEAD;
803 req->fh = newSVsv (fh); 994 req->fh = newSVsv (fh);
804 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
805 req->offset = offset; 996 req->offset = offset;
806 req->length = length; 997 req->length = length;
807 998
808 send_req (req); 999 REQ_SEND;
809} 1000}
810 1001
811void 1002void
812aio_stat(fh_or_path,callback=&PL_sv_undef) 1003aio_stat (fh_or_path,callback=&PL_sv_undef)
813 SV * fh_or_path 1004 SV * fh_or_path
814 SV * callback 1005 SV * callback
815 ALIAS: 1006 ALIAS:
816 aio_stat = REQ_STAT 1007 aio_stat = REQ_STAT
817 aio_lstat = REQ_LSTAT 1008 aio_lstat = REQ_LSTAT
818 CODE: 1009 PPCODE:
819{ 1010{
820 dREQ; 1011 dREQ;
821 1012
822 New (0, req->statdata, 1, Stat_t); 1013 New (0, req->statdata, 1, Stat_t);
823 if (!req->statdata) 1014 if (!req->statdata)
824 { 1015 {
825 free_req (req); 1016 req_free (req);
826 croak ("out of memory during aio_req->statdata allocation"); 1017 croak ("out of memory during aio_req->statdata allocation");
827 } 1018 }
828 1019
829 if (SvPOK (fh_or_path)) 1020 if (SvPOK (fh_or_path))
830 { 1021 {
… …
837 req->type = REQ_FSTAT; 1028 req->type = REQ_FSTAT;
838 req->fh = newSVsv (fh_or_path); 1029 req->fh = newSVsv (fh_or_path);
839 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
840 } 1031 }
841 1032
842 send_req (req); 1033 REQ_SEND;
843} 1034}
844 1035
845void 1036void
846aio_unlink(pathname,callback=&PL_sv_undef) 1037aio_unlink (pathname,callback=&PL_sv_undef)
847 SV * pathname 1038 SV * pathname
848 SV * callback 1039 SV * callback
849 ALIAS: 1040 ALIAS:
850 aio_unlink = REQ_UNLINK 1041 aio_unlink = REQ_UNLINK
851 aio_rmdir = REQ_RMDIR 1042 aio_rmdir = REQ_RMDIR
1043 aio_readdir = REQ_READDIR
852 CODE: 1044 PPCODE:
853{ 1045{
854 dREQ; 1046 dREQ;
855 1047
856 req->type = ix; 1048 req->type = ix;
857 req->data = newSVsv (pathname); 1049 req->data = newSVsv (pathname);
858 req->dataptr = SvPVbyte_nolen (req->data); 1050 req->dataptr = SvPVbyte_nolen (req->data);
859 1051
860 send_req (req); 1052 REQ_SEND;
861} 1053}
862 1054
863void 1055void
864aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1056aio_link (oldpath,newpath,callback=&PL_sv_undef)
865 SV * oldpath 1057 SV * oldpath
866 SV * newpath 1058 SV * newpath
867 SV * callback 1059 SV * callback
1060 ALIAS:
1061 aio_link = REQ_LINK
1062 aio_symlink = REQ_SYMLINK
1063 aio_rename = REQ_RENAME
868 CODE: 1064 PPCODE:
869{ 1065{
870 dREQ; 1066 dREQ;
871 1067
872 req->type = REQ_SYMLINK; 1068 req->type = ix;
873 req->fh = newSVsv (oldpath); 1069 req->fh = newSVsv (oldpath);
874 req->data2ptr = SvPVbyte_nolen (req->fh); 1070 req->data2ptr = SvPVbyte_nolen (req->fh);
875 req->data = newSVsv (newpath); 1071 req->data = newSVsv (newpath);
876 req->dataptr = SvPVbyte_nolen (req->data); 1072 req->dataptr = SvPVbyte_nolen (req->data);
877 1073
878 send_req (req); 1074 REQ_SEND;
879} 1075}
880 1076
881void 1077void
1078aio_group (callback=&PL_sv_undef)
1079 SV * callback
1080 PROTOTYPE: ;&
1081 PPCODE:
1082{
1083 dREQ;
1084 req->type = REQ_GROUP;
1085 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1086}
1087
1088void
882flush() 1089flush ()
883 PROTOTYPE: 1090 PROTOTYPE:
884 CODE: 1091 CODE:
885 while (nreqs) 1092 while (nreqs)
886 { 1093 {
887 poll_wait (); 1094 poll_wait ();
… …
927 CODE: 1134 CODE:
928 RETVAL = nreqs; 1135 RETVAL = nreqs;
929 OUTPUT: 1136 OUTPUT:
930 RETVAL 1137 RETVAL
931 1138
1139MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140
1141void
1142cancel (aio_req_ornot req)
1143 PROTOTYPE:
1144 CODE:
1145 req->cancelled = 1;
1146

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