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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 1.43 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
… …
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,
50}; 58};
51 59
60#define AIO_CB_KLASS "IO::AIO::CB"
61
52typedef struct aio_cb { 62typedef struct aio_cb
63{
64 struct aio_cb *grp_prev, *grp_next;
65 struct aio_grp *grp;
66
53 struct aio_cb *volatile next; 67 struct aio_cb *volatile next;
54 68
55 int type; 69 SV *self; /* the perl counterpart of this request, if any */
56 70
57 int fd, fd2; 71 SV *data, *callback;
72 SV *fh, *fh2;
73 void *dataptr, *data2ptr;
74 Stat_t *statdata;
58 off_t offset; 75 off_t offset;
59 size_t length; 76 size_t length;
60 ssize_t result; 77 ssize_t result;
78
79 int type;
80 int fd, fd2;
81 int errorno;
82 STRLEN dataoffset;
61 mode_t mode; /* open */ 83 mode_t mode; /* open */
62 int errorno; 84 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; 85} aio_cb;
70 86
71typedef aio_cb *aio_req; 87typedef aio_cb *aio_req;
88typedef aio_cb *aio_req_ornot;
72 89
73static int started, wanted; 90static int started, wanted;
74static volatile int nreqs; 91static volatile int nreqs;
75static int max_outstanding = 1<<30; 92static int max_outstanding = 1<<30;
76static int respipe [2]; 93static int respipe [2];
… …
80static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 97static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81 98
82static volatile aio_req reqs, reqe; /* queue start, queue end */ 99static volatile aio_req reqs, reqe; /* queue start, queue end */
83static volatile aio_req ress, rese; /* queue start, queue end */ 100static volatile aio_req ress, rese; /* queue start, queue end */
84 101
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
85static void free_req (aio_req req) 154static void req_free (aio_req req)
86{ 155{
156 if (req->self)
157 {
158 sv_unmagic (req->self, PERL_MAGIC_ext);
159 SvREFCNT_dec (req->self);
160 }
161
87 if (req->data) 162 if (req->data)
88 SvREFCNT_dec (req->data); 163 SvREFCNT_dec (req->data);
89 164
90 if (req->fh) 165 if (req->fh)
91 SvREFCNT_dec (req->fh); 166 SvREFCNT_dec (req->fh);
… …
96 if (req->statdata) 171 if (req->statdata)
97 Safefree (req->statdata); 172 Safefree (req->statdata);
98 173
99 if (req->callback) 174 if (req->callback)
100 SvREFCNT_dec (req->callback); 175 SvREFCNT_dec (req->callback);
176
177 if (req->type == REQ_READDIR && req->result >= 0)
178 free (req->data2ptr);
101 179
102 Safefree (req); 180 Safefree (req);
103} 181}
104 182
105static void 183static void
… …
170 PL_statcache = *(req->statdata); 248 PL_statcache = *(req->statdata);
171 } 249 }
172 250
173 ENTER; 251 ENTER;
174 PUSHMARK (SP); 252 PUSHMARK (SP);
175 XPUSHs (sv_2mortal (newSViv (req->result)));
176 253
177 if (req->type == REQ_OPEN) 254 if (req->type == REQ_READDIR)
178 { 255 {
179 /* convert fd to fh */ 256 SV *rv = &PL_sv_undef;
180 SV *fh;
181 257
182 PUTBACK; 258 if (req->result >= 0)
183 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 259 {
184 SPAGAIN; 260 char *buf = req->data2ptr;
261 AV *av = newAV ();
185 262
186 fh = SvREFCNT_inc (POPs); 263 while (req->result)
264 {
265 SV *sv = newSVpv (buf, 0);
187 266
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
188 PUSHMARK (SP); 275 XPUSHs (rv);
189 XPUSHs (sv_2mortal (fh));
190 } 276 }
277 else
278 {
279 XPUSHs (sv_2mortal (newSViv (req->result)));
191 280
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
192 if (SvOK (req->callback)) 297 if (SvOK (req->callback) && !req->cancelled)
193 { 298 {
194 PUTBACK; 299 PUTBACK;
195 call_sv (req->callback, G_VOID | G_EVAL); 300 call_sv (req->callback, G_VOID | G_EVAL);
196 SPAGAIN; 301 SPAGAIN;
197 302
198 if (SvTRUE (ERRSV)) 303 if (SvTRUE (ERRSV))
199 { 304 {
200 free_req (req); 305 req_free (req);
201 croak (0); 306 croak (0);
202 } 307 }
203 } 308 }
204 309
205 LEAVE; 310 LEAVE;
206 311
207 errno = errorno; 312 errno = errorno;
208 count++; 313 count++;
209 } 314 }
210 315
211 free_req (req); 316 req_free (req);
212 } 317 }
213 318
214 return count; 319 return count;
215} 320}
216 321
… …
235 340
236 sigprocmask (SIG_SETMASK, &oldsigset, 0); 341 sigprocmask (SIG_SETMASK, &oldsigset, 0);
237} 342}
238 343
239static void 344static void
240send_req (aio_req req) 345req_send (aio_req req)
241{ 346{
242 while (started < wanted && nreqs >= started) 347 while (started < wanted && nreqs >= started)
243 start_thread (); 348 start_thread ();
244 349
245 nreqs++; 350 nreqs++;
… …
276{ 381{
277 aio_req req; 382 aio_req req;
278 Newz (0, req, 1, aio_cb); 383 Newz (0, req, 1, aio_cb);
279 req->type = REQ_QUIT; 384 req->type = REQ_QUIT;
280 385
281 send_req (req); 386 req_send (req);
282} 387}
283 388
284static void min_parallel (int nthreads) 389static void min_parallel (int nthreads)
285{ 390{
286 if (wanted < nthreads) 391 if (wanted < nthreads)
… …
315 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 420 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316 croak ("cannot set result pipe to nonblocking mode"); 421 croak ("cannot set result pipe to nonblocking mode");
317 422
318 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 423 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319 croak ("cannot set result pipe to nonblocking mode"); 424 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} 425}
364 426
365/*****************************************************************************/ 427/*****************************************************************************/
366/* work around various missing functions */ 428/* work around various missing functions */
367 429
… …
372/* 434/*
373 * make our pread/pwrite safe against themselves, but not against 435 * make our pread/pwrite safe against themselves, but not against
374 * 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,
375 * but that's your problem, not mine. 437 * but that's your problem, not mine.
376 */ 438 */
377static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 439static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
378 440
379static ssize_t 441static ssize_t
380pread (int fd, void *buf, size_t count, off_t offset) 442pread (int fd, void *buf, size_t count, off_t offset)
381{ 443{
382 ssize_t res; 444 ssize_t res;
383 off_t ooffset; 445 off_t ooffset;
384 446
385 pthread_mutex_lock (&iolock); 447 pthread_mutex_lock (&preadwritelock);
386 ooffset = lseek (fd, 0, SEEK_CUR); 448 ooffset = lseek (fd, 0, SEEK_CUR);
387 lseek (fd, offset, SEEK_SET); 449 lseek (fd, offset, SEEK_SET);
388 res = read (fd, buf, count); 450 res = read (fd, buf, count);
389 lseek (fd, ooffset, SEEK_SET); 451 lseek (fd, ooffset, SEEK_SET);
390 pthread_mutex_unlock (&iolock); 452 pthread_mutex_unlock (&preadwritelock);
391 453
392 return res; 454 return res;
393} 455}
394 456
395static ssize_t 457static ssize_t
396pwrite (int fd, void *buf, size_t count, off_t offset) 458pwrite (int fd, void *buf, size_t count, off_t offset)
397{ 459{
398 ssize_t res; 460 ssize_t res;
399 off_t ooffset; 461 off_t ooffset;
400 462
401 pthread_mutex_lock (&iolock); 463 pthread_mutex_lock (&preadwritelock);
402 ooffset = lseek (fd, 0, SEEK_CUR); 464 ooffset = lseek (fd, 0, SEEK_CUR);
403 lseek (fd, offset, SEEK_SET); 465 lseek (fd, offset, SEEK_SET);
404 res = write (fd, buf, count); 466 res = write (fd, buf, count);
405 lseek (fd, offset, SEEK_SET); 467 lseek (fd, offset, SEEK_SET);
406 pthread_mutex_unlock (&iolock); 468 pthread_mutex_unlock (&preadwritelock);
407 469
408 return res; 470 return res;
409} 471}
410#endif 472#endif
411 473
… …
414#endif 476#endif
415 477
416#if !HAVE_READAHEAD 478#if !HAVE_READAHEAD
417# define readahead aio_readahead 479# define readahead aio_readahead
418 480
419static char readahead_buf[4096];
420
421static ssize_t 481static ssize_t
422readahead (int fd, off_t offset, size_t count) 482readahead (int fd, off_t offset, size_t count)
423{ 483{
484 char readahead_buf[4096];
485
424 while (count > 0) 486 while (count > 0)
425 { 487 {
426 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 488 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
427 489
428 pread (fd, readahead_buf, len, offset); 490 pread (fd, readahead_buf, len, offset);
… …
432 494
433 errno = 0; 495 errno = 0;
434} 496}
435#endif 497#endif
436 498
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
437/* sendfile always needs emulation */ 530/* sendfile always needs emulation */
438static ssize_t 531static ssize_t
439sendfile_ (int ofd, int ifd, off_t offset, size_t count) 532sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440{ 533{
441 ssize_t res; 534 ssize_t res;
442 535
443 if (!count) 536 if (!count)
444 return 0; 537 return 0;
445 538
446#if HAVE_SENDFILE 539#if HAVE_SENDFILE
447# if __linux 540# if __linux
448 res = sendfile (ofd, ifd, &offset, count); 541 res = sendfile (ofd, ifd, &offset, count);
449 542
450# elif __freebsd 543# elif __freebsd
451 /* 544 /*
452 * 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
453 * wasted on making it similar to other I/O functions. 546 * wasted on making it similar to other I/O functions.
454 */ 547 */
455 { 548 {
456 off_t sbytes; 549 off_t sbytes;
457 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 550 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458 551
459 if (res < 0 && sbytes) 552 if (res < 0 && sbytes)
460 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ 553 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461 res = sbytes; 554 res = sbytes;
462 } 555 }
463 556
464# elif __hpux 557# elif __hpux
465 res = sendfile (ofd, ifd, offset, count, 0, 0); 558 res = sendfile (ofd, ifd, offset, count, 0, 0);
466 559
467# elif __solaris 560# elif __solaris
468 { 561 {
469 struct sendfilevec vec; 562 struct sendfilevec vec;
470 size_t sbytes; 563 size_t sbytes;
471 564
472 vec.sfv_fd = ifd; 565 vec.sfv_fd = ifd;
473 vec.sfv_flag = 0; 566 vec.sfv_flag = 0;
474 vec.sfv_off = offset; 567 vec.sfv_off = offset;
475 vec.sfv_len = count; 568 vec.sfv_len = count;
476 569
477 res = sendfilev (ofd, &vec, 1, &sbytes); 570 res = sendfilev (ofd, &vec, 1, &sbytes);
478 571
479 if (res < 0 && sbytes) 572 if (res < 0 && sbytes)
480 res = sbytes; 573 res = sbytes;
481 } 574 }
482 575
483# else
484 res = -1;
485 errno = ENOSYS;
486# endif 576# endif
577#else
578 res = -1;
579 errno = ENOSYS;
487#endif 580#endif
488 581
489 if (res < 0 582 if (res < 0
490 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 583 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
491#if __solaris 584#if __solaris
492 || errno == EAFNOSUPPORT || errno == EPROTOTYPE 585 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
493#endif 586#endif
494 ) 587 )
495 ) 588 )
496 { 589 {
497 /* emulate sendfile. this is a major pain in the ass */ 590 /* emulate sendfile. this is a major pain in the ass */
498 char *buf = malloc (4096); 591 char buf[4096];
499 res = 0; 592 res = 0;
500 593
501 for (;;) 594 while (count)
502 { 595 {
503 ssize_t cnt; 596 ssize_t cnt;
504 597
505 cnt = pread (ifd, buf, 4096, offset); 598 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
506 599
507 if (cnt <= 0) 600 if (cnt <= 0)
508 { 601 {
509 if (cnt && !res) res = -1; 602 if (cnt && !res) res = -1;
510 break; 603 break;
511 } 604 }
512 605
513 cnt = write (ofd, buf, cnt); 606 cnt = write (ofd, buf, cnt);
514 607
515 if (cnt <= 0) 608 if (cnt <= 0)
516 { 609 {
517 if (cnt && !res) res = -1; 610 if (cnt && !res) res = -1;
518 break; 611 break;
519 } 612 }
520 613
521 offset += cnt; 614 offset += cnt;
522 res += cnt; 615 res += cnt;
616 count -= cnt;
523 } 617 }
524
525 {
526 int errorno = errno;
527 free (buf);
528 errno = errorno;
529 }
530 } 618 }
531 619
532 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;
533} 685}
534 686
535/*****************************************************************************/ 687/*****************************************************************************/
536 688
537static void * 689static void *
… …
562 714
563 pthread_mutex_unlock (&reqlock); 715 pthread_mutex_unlock (&reqlock);
564 716
565 errno = 0; /* strictly unnecessary */ 717 errno = 0; /* strictly unnecessary */
566 718
567 type = req->type; 719 if (!req->cancelled)
568
569 switch (type) 720 switch (req->type)
570 { 721 {
571 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;
572 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;
573 724
574 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;
575 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;
576 727
577 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 728 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
578 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 729 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
579 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 730 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
580 731
581 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;
582 case REQ_CLOSE: req->result = close (req->fd); break; 733 case REQ_CLOSE: req->result = close (req->fd); break;
583 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 734 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
584 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;
585 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 738 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
586 739
587 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 740 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
588 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;
589 743
590 case REQ_QUIT: 744 case REQ_QUIT:
591 break; 745 break;
592 746
593 default: 747 default:
594 req->result = ENOSYS; 748 req->result = ENOSYS;
595 break; 749 break;
596 } 750 }
597 751
598 req->errorno = errno; 752 req->errorno = errno;
599 753
600 pthread_mutex_lock (&reslock); 754 pthread_mutex_lock (&reslock);
601 755
… …
619 while (type != REQ_QUIT); 773 while (type != REQ_QUIT);
620 774
621 return 0; 775 return 0;
622} 776}
623 777
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
624#define dREQ \ 835#define dREQ \
625 aio_req req; \ 836 aio_req req; \
626 \ 837 \
627 if (SvOK (callback) && !SvROK (callback)) \ 838 if (SvOK (callback) && !SvROK (callback)) \
628 croak ("clalback must be undef or of reference type"); \ 839 croak ("callback must be undef or of reference type"); \
629 \ 840 \
630 Newz (0, req, 1, aio_cb); \ 841 Newz (0, req, 1, aio_cb); \
631 if (!req) \ 842 if (!req) \
632 croak ("out of memory during aio_req allocation"); \ 843 croak ("out of memory during aio_req allocation"); \
633 \ 844 \
634 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));
635 852
636MODULE = IO::AIO PACKAGE = IO::AIO 853MODULE = IO::AIO PACKAGE = IO::AIO
637 854
638PROTOTYPES: ENABLE 855PROTOTYPES: ENABLE
639 856
640BOOT: 857BOOT:
641{ 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
642 create_pipe (); 864 create_pipe ();
643 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 865 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
644} 866}
645 867
646void 868void
647min_parallel(nthreads) 869min_parallel (nthreads)
648 int nthreads 870 int nthreads
649 PROTOTYPE: $ 871 PROTOTYPE: $
650 872
651void 873void
652max_parallel(nthreads) 874max_parallel (nthreads)
653 int nthreads 875 int nthreads
654 PROTOTYPE: $ 876 PROTOTYPE: $
655 877
656int 878int
657max_outstanding(nreqs) 879max_outstanding (nreqs)
658 int nreqs 880 int nreqs
659 PROTOTYPE: $ 881 PROTOTYPE: $
660 CODE: 882 CODE:
661 RETVAL = max_outstanding; 883 RETVAL = max_outstanding;
662 max_outstanding = nreqs; 884 max_outstanding = nreqs;
663 885
664void 886void
665aio_open(pathname,flags,mode,callback=&PL_sv_undef) 887aio_open (pathname,flags,mode,callback=&PL_sv_undef)
666 SV * pathname 888 SV * pathname
667 int flags 889 int flags
668 int mode 890 int mode
669 SV * callback 891 SV * callback
670 PROTOTYPE: $$$;$ 892 PROTOTYPE: $$$;$
671 CODE: 893 PPCODE:
672{ 894{
673 dREQ; 895 dREQ;
674 896
675 req->type = REQ_OPEN; 897 req->type = REQ_OPEN;
676 req->data = newSVsv (pathname); 898 req->data = newSVsv (pathname);
677 req->dataptr = SvPVbyte_nolen (req->data); 899 req->dataptr = SvPVbyte_nolen (req->data);
678 req->fd = flags; 900 req->fd = flags;
679 req->mode = mode; 901 req->mode = mode;
680 902
681 send_req (req); 903 REQ_SEND;
682} 904}
683 905
684void 906void
685aio_close(fh,callback=&PL_sv_undef) 907aio_close (fh,callback=&PL_sv_undef)
686 SV * fh 908 SV * fh
687 SV * callback 909 SV * callback
688 PROTOTYPE: $;$ 910 PROTOTYPE: $;$
689 ALIAS: 911 ALIAS:
690 aio_close = REQ_CLOSE 912 aio_close = REQ_CLOSE
691 aio_fsync = REQ_FSYNC 913 aio_fsync = REQ_FSYNC
692 aio_fdatasync = REQ_FDATASYNC 914 aio_fdatasync = REQ_FDATASYNC
693 CODE: 915 PPCODE:
694{ 916{
695 dREQ; 917 dREQ;
696 918
697 req->type = ix; 919 req->type = ix;
698 req->fh = newSVsv (fh); 920 req->fh = newSVsv (fh);
699 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 921 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
700 922
701 send_req (req); 923 REQ_SEND (req);
702} 924}
703 925
704void 926void
705aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 927aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
706 SV * fh 928 SV * fh
707 UV offset 929 UV offset
708 UV length 930 UV length
709 SV * data 931 SV * data
710 UV dataoffset 932 UV dataoffset
711 SV * callback 933 SV * callback
712 ALIAS: 934 ALIAS:
713 aio_read = REQ_READ 935 aio_read = REQ_READ
714 aio_write = REQ_WRITE 936 aio_write = REQ_WRITE
715 PROTOTYPE: $$$$$;$ 937 PROTOTYPE: $$$$$;$
716 CODE: 938 PPCODE:
717{ 939{
718 aio_req req; 940 aio_req req;
719 STRLEN svlen; 941 STRLEN svlen;
720 char *svptr = SvPVbyte (data, svlen); 942 char *svptr = SvPVbyte (data, svlen);
721 943
… …
759 { 981 {
760 SvREADONLY_on (data); 982 SvREADONLY_on (data);
761 req->data2ptr = (void *)data; 983 req->data2ptr = (void *)data;
762 } 984 }
763 985
764 send_req (req); 986 REQ_SEND;
765 } 987 }
766} 988}
767 989
768void 990void
769aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 991aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
770 SV * out_fh 992 SV * out_fh
771 SV * in_fh 993 SV * in_fh
772 UV in_offset 994 UV in_offset
773 UV length 995 UV length
774 SV * callback 996 SV * callback
775 PROTOTYPE: $$$$;$ 997 PROTOTYPE: $$$$;$
776 CODE: 998 PPCODE:
777{ 999{
778 dREQ; 1000 dREQ;
779 1001
780 req->type = REQ_SENDFILE; 1002 req->type = REQ_SENDFILE;
781 req->fh = newSVsv (out_fh); 1003 req->fh = newSVsv (out_fh);
… …
783 req->fh2 = newSVsv (in_fh); 1005 req->fh2 = newSVsv (in_fh);
784 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1006 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
785 req->offset = in_offset; 1007 req->offset = in_offset;
786 req->length = length; 1008 req->length = length;
787 1009
788 send_req (req); 1010 REQ_SEND;
789} 1011}
790 1012
791void 1013void
792aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1014aio_readahead (fh,offset,length,callback=&PL_sv_undef)
793 SV * fh 1015 SV * fh
794 UV offset 1016 UV offset
795 IV length 1017 IV length
796 SV * callback 1018 SV * callback
797 PROTOTYPE: $$$;$ 1019 PROTOTYPE: $$$;$
798 CODE: 1020 PPCODE:
799{ 1021{
800 dREQ; 1022 dREQ;
801 1023
802 req->type = REQ_READAHEAD; 1024 req->type = REQ_READAHEAD;
803 req->fh = newSVsv (fh); 1025 req->fh = newSVsv (fh);
804 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1026 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
805 req->offset = offset; 1027 req->offset = offset;
806 req->length = length; 1028 req->length = length;
807 1029
808 send_req (req); 1030 REQ_SEND;
809} 1031}
810 1032
811void 1033void
812aio_stat(fh_or_path,callback=&PL_sv_undef) 1034aio_stat (fh_or_path,callback=&PL_sv_undef)
813 SV * fh_or_path 1035 SV * fh_or_path
814 SV * callback 1036 SV * callback
815 ALIAS: 1037 ALIAS:
816 aio_stat = REQ_STAT 1038 aio_stat = REQ_STAT
817 aio_lstat = REQ_LSTAT 1039 aio_lstat = REQ_LSTAT
818 CODE: 1040 PPCODE:
819{ 1041{
820 dREQ; 1042 dREQ;
821 1043
822 New (0, req->statdata, 1, Stat_t); 1044 New (0, req->statdata, 1, Stat_t);
823 if (!req->statdata) 1045 if (!req->statdata)
824 { 1046 {
825 free_req (req); 1047 req_free (req);
826 croak ("out of memory during aio_req->statdata allocation"); 1048 croak ("out of memory during aio_req->statdata allocation");
827 } 1049 }
828 1050
829 if (SvPOK (fh_or_path)) 1051 if (SvPOK (fh_or_path))
830 { 1052 {
… …
837 req->type = REQ_FSTAT; 1059 req->type = REQ_FSTAT;
838 req->fh = newSVsv (fh_or_path); 1060 req->fh = newSVsv (fh_or_path);
839 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1061 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
840 } 1062 }
841 1063
842 send_req (req); 1064 REQ_SEND;
843} 1065}
844 1066
845void 1067void
846aio_unlink(pathname,callback=&PL_sv_undef) 1068aio_unlink (pathname,callback=&PL_sv_undef)
847 SV * pathname 1069 SV * pathname
848 SV * callback 1070 SV * callback
849 ALIAS: 1071 ALIAS:
850 aio_unlink = REQ_UNLINK 1072 aio_unlink = REQ_UNLINK
851 aio_rmdir = REQ_RMDIR 1073 aio_rmdir = REQ_RMDIR
1074 aio_readdir = REQ_READDIR
852 CODE: 1075 PPCODE:
853{ 1076{
854 dREQ; 1077 dREQ;
855 1078
856 req->type = ix; 1079 req->type = ix;
857 req->data = newSVsv (pathname); 1080 req->data = newSVsv (pathname);
858 req->dataptr = SvPVbyte_nolen (req->data); 1081 req->dataptr = SvPVbyte_nolen (req->data);
859 1082
860 send_req (req); 1083 REQ_SEND;
861} 1084}
862 1085
863void 1086void
864aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1087aio_link (oldpath,newpath,callback=&PL_sv_undef)
865 SV * oldpath 1088 SV * oldpath
866 SV * newpath 1089 SV * newpath
867 SV * callback 1090 SV * callback
1091 ALIAS:
1092 aio_link = REQ_LINK
1093 aio_symlink = REQ_SYMLINK
1094 aio_rename = REQ_RENAME
868 CODE: 1095 PPCODE:
869{ 1096{
870 dREQ; 1097 dREQ;
871 1098
872 req->type = REQ_SYMLINK; 1099 req->type = ix;
873 req->fh = newSVsv (oldpath); 1100 req->fh = newSVsv (oldpath);
874 req->data2ptr = SvPVbyte_nolen (req->fh); 1101 req->data2ptr = SvPVbyte_nolen (req->fh);
875 req->data = newSVsv (newpath); 1102 req->data = newSVsv (newpath);
876 req->dataptr = SvPVbyte_nolen (req->data); 1103 req->dataptr = SvPVbyte_nolen (req->data);
877 1104
878 send_req (req); 1105 REQ_SEND;
879} 1106}
880 1107
1108#if 0
1109
1110# undocumented, because it does not cancel active requests
881void 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
882flush() 1132flush ()
883 PROTOTYPE: 1133 PROTOTYPE:
884 CODE: 1134 CODE:
885 while (nreqs) 1135 while (nreqs)
886 { 1136 {
887 poll_wait (); 1137 poll_wait ();
… …
927 CODE: 1177 CODE:
928 RETVAL = nreqs; 1178 RETVAL = nreqs;
929 OUTPUT: 1179 OUTPUT:
930 RETVAL 1180 RETVAL
931 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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