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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.32 by root, Mon Aug 22 23:20:37 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
… …
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,
58 REQ_GROUP,
46}; 59};
47 60
61#define AIO_REQ_KLASS "IO::AIO::REQ"
62#define AIO_GRP_KLASS "IO::AIO::GRP"
63
48typedef struct aio_cb { 64typedef struct aio_cb
65{
66 struct aio_cb *grp, *grp_prev, *grp_next;
67
49 struct aio_cb *volatile next; 68 struct aio_cb *volatile next;
50 69
51 int type; 70 SV *self; /* the perl counterpart of this request, if any */
52 71
53 int fd, fd2; 72 SV *data, *callback;
73 SV *fh, *fh2;
74 void *dataptr, *data2ptr;
75 Stat_t *statdata;
54 off_t offset; 76 off_t offset;
55 size_t length; 77 size_t length;
56 ssize_t result; 78 ssize_t result;
79
80 int type;
81 int fd, fd2;
82 int errorno;
83 STRLEN dataoffset;
57 mode_t mode; /* open */ 84 mode_t mode; /* open */
58 int errorno; 85 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; 86} aio_cb;
66 87
67typedef aio_cb *aio_req; 88typedef aio_cb *aio_req;
89typedef aio_cb *aio_req_ornot;
90typedef aio_cb *aio_group;
68 91
69static int started, wanted; 92static int started, wanted;
70static volatile int nreqs; 93static volatile int nreqs;
71static int max_outstanding = 1<<30; 94static int max_outstanding = 1<<30;
72static int respipe [2]; 95static int respipe [2];
… …
76static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 99static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77 100
78static volatile aio_req reqs, reqe; /* queue start, queue end */ 101static volatile aio_req reqs, reqe; /* queue start, queue end */
79static volatile aio_req ress, rese; /* queue start, queue end */ 102static volatile aio_req ress, rese; /* queue start, queue end */
80 103
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
81static void free_req (aio_req req) 123static void req_free (aio_req req)
82{ 124{
125 if (req->self)
126 {
127 sv_unmagic (req->self, PERL_MAGIC_ext);
128 SvREFCNT_dec (req->self);
129 }
130
83 if (req->data) 131 if (req->data)
84 SvREFCNT_dec (req->data); 132 SvREFCNT_dec (req->data);
85 133
86 if (req->fh) 134 if (req->fh)
87 SvREFCNT_dec (req->fh); 135 SvREFCNT_dec (req->fh);
… …
92 if (req->statdata) 140 if (req->statdata)
93 Safefree (req->statdata); 141 Safefree (req->statdata);
94 142
95 if (req->callback) 143 if (req->callback)
96 SvREFCNT_dec (req->callback); 144 SvREFCNT_dec (req->callback);
145
146 if (req->type == REQ_READDIR && req->result >= 0)
147 free (req->data2ptr);
97 148
98 Safefree (req); 149 Safefree (req);
99} 150}
100 151
101static void 152static void
… …
166 PL_statcache = *(req->statdata); 217 PL_statcache = *(req->statdata);
167 } 218 }
168 219
169 ENTER; 220 ENTER;
170 PUSHMARK (SP); 221 PUSHMARK (SP);
171 XPUSHs (sv_2mortal (newSViv (req->result)));
172 222
173 if (req->type == REQ_OPEN) 223 if (req->type == REQ_READDIR)
174 { 224 {
175 /* convert fd to fh */ 225 SV *rv = &PL_sv_undef;
176 SV *fh;
177 226
178 PUTBACK; 227 if (req->result >= 0)
179 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 228 {
180 SPAGAIN; 229 char *buf = req->data2ptr;
230 AV *av = newAV ();
181 231
182 fh = SvREFCNT_inc (POPs); 232 while (req->result)
233 {
234 SV *sv = newSVpv (buf, 0);
183 235
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
184 PUSHMARK (SP); 244 XPUSHs (rv);
185 XPUSHs (sv_2mortal (fh));
186 } 245 }
246 else
247 {
248 XPUSHs (sv_2mortal (newSViv (req->result)));
187 249
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
188 if (SvOK (req->callback)) 266 if (SvOK (req->callback) && !req->cancelled)
189 { 267 {
190 PUTBACK; 268 PUTBACK;
191 call_sv (req->callback, G_VOID | G_EVAL); 269 call_sv (req->callback, G_VOID | G_EVAL);
192 SPAGAIN; 270 SPAGAIN;
193 271
194 if (SvTRUE (ERRSV)) 272 if (SvTRUE (ERRSV))
195 { 273 {
196 free_req (req); 274 req_free (req);
197 croak (0); 275 croak (0);
198 } 276 }
199 } 277 }
200 278
201 LEAVE; 279 LEAVE;
202 280
203 errno = errorno; 281 errno = errorno;
204 count++; 282 count++;
205 } 283 }
206 284
207 free_req (req); 285 req_free (req);
208 } 286 }
209 287
210 return count; 288 return count;
211} 289}
212 290
… …
231 309
232 sigprocmask (SIG_SETMASK, &oldsigset, 0); 310 sigprocmask (SIG_SETMASK, &oldsigset, 0);
233} 311}
234 312
235static void 313static void
236send_req (aio_req req) 314req_send (aio_req req)
237{ 315{
238 while (started < wanted && nreqs >= started) 316 while (started < wanted && nreqs >= started)
239 start_thread (); 317 start_thread ();
240 318
241 nreqs++; 319 nreqs++;
… …
272{ 350{
273 aio_req req; 351 aio_req req;
274 Newz (0, req, 1, aio_cb); 352 Newz (0, req, 1, aio_cb);
275 req->type = REQ_QUIT; 353 req->type = REQ_QUIT;
276 354
277 send_req (req); 355 req_send (req);
278} 356}
279 357
280static void min_parallel (int nthreads) 358static void min_parallel (int nthreads)
281{ 359{
282 if (wanted < nthreads) 360 if (wanted < nthreads)
… …
311 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 389 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312 croak ("cannot set result pipe to nonblocking mode"); 390 croak ("cannot set result pipe to nonblocking mode");
313 391
314 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 392 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315 croak ("cannot set result pipe to nonblocking mode"); 393 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} 394}
360 395
361/*****************************************************************************/ 396/*****************************************************************************/
362/* work around various missing functions */ 397/* work around various missing functions */
363 398
… …
368/* 403/*
369 * make our pread/pwrite safe against themselves, but not against 404 * make our pread/pwrite safe against themselves, but not against
370 * 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,
371 * but that's your problem, not mine. 406 * but that's your problem, not mine.
372 */ 407 */
373static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 408static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374 409
375static ssize_t 410static ssize_t
376pread (int fd, void *buf, size_t count, off_t offset) 411pread (int fd, void *buf, size_t count, off_t offset)
377{ 412{
378 ssize_t res; 413 ssize_t res;
379 off_t ooffset; 414 off_t ooffset;
380 415
381 pthread_mutex_lock (&iolock); 416 pthread_mutex_lock (&preadwritelock);
382 ooffset = lseek (fd, 0, SEEK_CUR); 417 ooffset = lseek (fd, 0, SEEK_CUR);
383 lseek (fd, offset, SEEK_SET); 418 lseek (fd, offset, SEEK_SET);
384 res = read (fd, buf, count); 419 res = read (fd, buf, count);
385 lseek (fd, ooffset, SEEK_SET); 420 lseek (fd, ooffset, SEEK_SET);
386 pthread_mutex_unlock (&iolock); 421 pthread_mutex_unlock (&preadwritelock);
387 422
388 return res; 423 return res;
389} 424}
390 425
391static ssize_t 426static ssize_t
392pwrite (int fd, void *buf, size_t count, off_t offset) 427pwrite (int fd, void *buf, size_t count, off_t offset)
393{ 428{
394 ssize_t res; 429 ssize_t res;
395 off_t ooffset; 430 off_t ooffset;
396 431
397 pthread_mutex_lock (&iolock); 432 pthread_mutex_lock (&preadwritelock);
398 ooffset = lseek (fd, 0, SEEK_CUR); 433 ooffset = lseek (fd, 0, SEEK_CUR);
399 lseek (fd, offset, SEEK_SET); 434 lseek (fd, offset, SEEK_SET);
400 res = write (fd, buf, count); 435 res = write (fd, buf, count);
401 lseek (fd, offset, SEEK_SET); 436 lseek (fd, offset, SEEK_SET);
402 pthread_mutex_unlock (&iolock); 437 pthread_mutex_unlock (&preadwritelock);
403 438
404 return res; 439 return res;
405} 440}
406#endif 441#endif
407 442
… …
410#endif 445#endif
411 446
412#if !HAVE_READAHEAD 447#if !HAVE_READAHEAD
413# define readahead aio_readahead 448# define readahead aio_readahead
414 449
415static char readahead_buf[4096];
416
417static ssize_t 450static ssize_t
418readahead (int fd, off_t offset, size_t count) 451readahead (int fd, off_t offset, size_t count)
419{ 452{
453 char readahead_buf[4096];
454
420 while (count > 0) 455 while (count > 0)
421 { 456 {
422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 457 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423 458
424 pread (fd, readahead_buf, len, offset); 459 pread (fd, readahead_buf, len, offset);
… …
428 463
429 errno = 0; 464 errno = 0;
430} 465}
431#endif 466#endif
432 467
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
433/* sendfile always needs emulation */ 499/* sendfile always needs emulation */
434static ssize_t 500static ssize_t
435sendfile_ (int ofd, int ifd, off_t offset, size_t count) 501sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436{ 502{
437 ssize_t res; 503 ssize_t res;
438 504
439 if (!count) 505 if (!count)
440 return 0; 506 return 0;
441 507
508#if HAVE_SENDFILE
442#if __linux 509# if __linux
443 res = sendfile (ofd, ifd, &offset, count); 510 res = sendfile (ofd, ifd, &offset, count);
444 511
445#elif __freebsd 512# elif __freebsd
446 /* 513 /*
447 * 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
448 * wasted on making it similar to other i/o functions. 515 * wasted on making it similar to other I/O functions.
449 */ 516 */
450 { 517 {
451 off_t sbytes; 518 off_t sbytes;
452 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 519 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453 520
454 if (!res && errno == EAGAIN) 521 if (res < 0 && sbytes)
522 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
455 res = sbytes; 523 res = sbytes;
456 } 524 }
457 525
458#elif __hpux 526# elif __hpux
459 res = sendfile (ofd, ifd, offset, count, 0, 0); 527 res = sendfile (ofd, ifd, offset, count, 0, 0);
460 528
529# elif __solaris
530 {
531 struct sendfilevec vec;
532 size_t sbytes;
533
534 vec.sfv_fd = ifd;
535 vec.sfv_flag = 0;
536 vec.sfv_off = offset;
537 vec.sfv_len = count;
538
539 res = sendfilev (ofd, &vec, 1, &sbytes);
540
541 if (res < 0 && sbytes)
542 res = sbytes;
543 }
544
545# endif
461#else 546#else
462 res = -1; 547 res = -1;
463 errno = ENOSYS; 548 errno = ENOSYS;
464#endif 549#endif
465 550
551 if (res < 0
466 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK)) 552 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
553#if __solaris
554 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
555#endif
556 )
557 )
467 { 558 {
468 /* emulate sendfile. this is a major pain in the ass */ 559 /* emulate sendfile. this is a major pain in the ass */
469 char *buf = malloc (4096); 560 char buf[4096];
470 res = 0; 561 res = 0;
471 562
472 for (;;) 563 while (count)
473 { 564 {
474 ssize_t cnt; 565 ssize_t cnt;
475 566
476 cnt = pread (ifd, buf, 4096, offset); 567 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
477 568
478 if (cnt <= 0) 569 if (cnt <= 0)
479 { 570 {
480 if (cnt && !res) res = -1; 571 if (cnt && !res) res = -1;
481 break; 572 break;
482 } 573 }
483 574
484 cnt = write (ofd, buf, cnt); 575 cnt = write (ofd, buf, cnt);
485 576
486 if (cnt <= 0) 577 if (cnt <= 0)
487 { 578 {
488 if (cnt && !res) res = -1; 579 if (cnt && !res) res = -1;
489 break; 580 break;
490 } 581 }
491 582
492 offset += cnt; 583 offset += cnt;
493 res += cnt; 584 res += cnt;
585 count -= cnt;
494 } 586 }
495
496 {
497 int errorno = errno;
498 free (buf);
499 errno = errorno;
500 }
501 } 587 }
502 588
503 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;
504} 654}
505 655
506/*****************************************************************************/ 656/*****************************************************************************/
507 657
508static void * 658static void *
… …
533 683
534 pthread_mutex_unlock (&reqlock); 684 pthread_mutex_unlock (&reqlock);
535 685
536 errno = 0; /* strictly unnecessary */ 686 errno = 0; /* strictly unnecessary */
537 687
538 type = req->type; 688 if (!req->cancelled)
539
540 switch (type) 689 switch (req->type)
541 { 690 {
542 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;
543 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;
544 693
545 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;
546 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;
547 696
548 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
549 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
550 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
551 700
552 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;
553 case REQ_CLOSE: req->result = close (req->fd); break; 702 case REQ_CLOSE: req->result = close (req->fd); break;
554 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
555 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;
556 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
557 708
558 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
559 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;
560 712
561 case REQ_QUIT: 713 case REQ_QUIT:
562 break; 714 break;
563 715
564 default: 716 default:
565 req->result = ENOSYS; 717 req->result = ENOSYS;
566 break; 718 break;
567 } 719 }
568 720
569 req->errorno = errno; 721 req->errorno = errno;
570 722
571 pthread_mutex_lock (&reslock); 723 pthread_mutex_lock (&reslock);
572 724
… …
590 while (type != REQ_QUIT); 742 while (type != REQ_QUIT);
591 743
592 return 0; 744 return 0;
593} 745}
594 746
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
595#define dREQ \ 804#define dREQ \
596 aio_req req; \ 805 aio_req req; \
597 \ 806 \
598 if (SvOK (callback) && !SvROK (callback)) \ 807 if (SvOK (callback) && !SvROK (callback)) \
599 croak ("clalback must be undef or of reference type"); \ 808 croak ("callback must be undef or of reference type"); \
600 \ 809 \
601 Newz (0, req, 1, aio_cb); \ 810 Newz (0, req, 1, aio_cb); \
602 if (!req) \ 811 if (!req) \
603 croak ("out of memory during aio_req allocation"); \ 812 croak ("out of memory during aio_req allocation"); \
604 \ 813 \
605 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));
606 821
607MODULE = IO::AIO PACKAGE = IO::AIO 822MODULE = IO::AIO PACKAGE = IO::AIO
608 823
609PROTOTYPES: ENABLE 824PROTOTYPES: ENABLE
610 825
611BOOT: 826BOOT:
612{ 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
613 create_pipe (); 833 create_pipe ();
614 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
615} 835}
616 836
617void 837void
618min_parallel(nthreads) 838min_parallel (nthreads)
619 int nthreads 839 int nthreads
620 PROTOTYPE: $ 840 PROTOTYPE: $
621 841
622void 842void
623max_parallel(nthreads) 843max_parallel (nthreads)
624 int nthreads 844 int nthreads
625 PROTOTYPE: $ 845 PROTOTYPE: $
626 846
627int 847int
628max_outstanding(nreqs) 848max_outstanding (nreqs)
629 int nreqs 849 int nreqs
630 PROTOTYPE: $ 850 PROTOTYPE: $
631 CODE: 851 CODE:
632 RETVAL = max_outstanding; 852 RETVAL = max_outstanding;
633 max_outstanding = nreqs; 853 max_outstanding = nreqs;
634 854
635void 855void
636aio_open(pathname,flags,mode,callback=&PL_sv_undef) 856aio_open (pathname,flags,mode,callback=&PL_sv_undef)
637 SV * pathname 857 SV * pathname
638 int flags 858 int flags
639 int mode 859 int mode
640 SV * callback 860 SV * callback
641 PROTOTYPE: $$$;$ 861 PROTOTYPE: $$$;$
642 CODE: 862 PPCODE:
643{ 863{
644 dREQ; 864 dREQ;
645 865
646 req->type = REQ_OPEN; 866 req->type = REQ_OPEN;
647 req->data = newSVsv (pathname); 867 req->data = newSVsv (pathname);
648 req->dataptr = SvPVbyte_nolen (req->data); 868 req->dataptr = SvPVbyte_nolen (req->data);
649 req->fd = flags; 869 req->fd = flags;
650 req->mode = mode; 870 req->mode = mode;
651 871
652 send_req (req); 872 REQ_SEND;
653} 873}
654 874
655void 875void
656aio_close(fh,callback=&PL_sv_undef) 876aio_close (fh,callback=&PL_sv_undef)
657 SV * fh 877 SV * fh
658 SV * callback 878 SV * callback
659 PROTOTYPE: $;$ 879 PROTOTYPE: $;$
660 ALIAS: 880 ALIAS:
661 aio_close = REQ_CLOSE 881 aio_close = REQ_CLOSE
662 aio_fsync = REQ_FSYNC 882 aio_fsync = REQ_FSYNC
663 aio_fdatasync = REQ_FDATASYNC 883 aio_fdatasync = REQ_FDATASYNC
664 CODE: 884 PPCODE:
665{ 885{
666 dREQ; 886 dREQ;
667 887
668 req->type = ix; 888 req->type = ix;
669 req->fh = newSVsv (fh); 889 req->fh = newSVsv (fh);
670 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
671 891
672 send_req (req); 892 REQ_SEND (req);
673} 893}
674 894
675void 895void
676aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
677 SV * fh 897 SV * fh
678 UV offset 898 UV offset
679 UV length 899 UV length
680 SV * data 900 SV * data
681 UV dataoffset 901 UV dataoffset
682 SV * callback 902 SV * callback
683 ALIAS: 903 ALIAS:
684 aio_read = REQ_READ 904 aio_read = REQ_READ
685 aio_write = REQ_WRITE 905 aio_write = REQ_WRITE
686 PROTOTYPE: $$$$$;$ 906 PROTOTYPE: $$$$$;$
687 CODE: 907 PPCODE:
688{ 908{
689 aio_req req; 909 aio_req req;
690 STRLEN svlen; 910 STRLEN svlen;
691 char *svptr = SvPVbyte (data, svlen); 911 char *svptr = SvPVbyte (data, svlen);
692 912
… …
730 { 950 {
731 SvREADONLY_on (data); 951 SvREADONLY_on (data);
732 req->data2ptr = (void *)data; 952 req->data2ptr = (void *)data;
733 } 953 }
734 954
735 send_req (req); 955 REQ_SEND;
736 } 956 }
737} 957}
738 958
739void 959void
740aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
741 SV * out_fh 961 SV * out_fh
742 SV * in_fh 962 SV * in_fh
743 UV in_offset 963 UV in_offset
744 UV length 964 UV length
745 SV * callback 965 SV * callback
746 PROTOTYPE: $$$$;$ 966 PROTOTYPE: $$$$;$
747 CODE: 967 PPCODE:
748{ 968{
749 dREQ; 969 dREQ;
750 970
751 req->type = REQ_SENDFILE; 971 req->type = REQ_SENDFILE;
752 req->fh = newSVsv (out_fh); 972 req->fh = newSVsv (out_fh);
… …
754 req->fh2 = newSVsv (in_fh); 974 req->fh2 = newSVsv (in_fh);
755 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
756 req->offset = in_offset; 976 req->offset = in_offset;
757 req->length = length; 977 req->length = length;
758 978
759 send_req (req); 979 REQ_SEND;
760} 980}
761 981
762void 982void
763aio_readahead(fh,offset,length,callback=&PL_sv_undef) 983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
764 SV * fh 984 SV * fh
765 UV offset 985 UV offset
766 IV length 986 IV length
767 SV * callback 987 SV * callback
768 PROTOTYPE: $$$;$ 988 PROTOTYPE: $$$;$
769 CODE: 989 PPCODE:
770{ 990{
771 dREQ; 991 dREQ;
772 992
773 req->type = REQ_READAHEAD; 993 req->type = REQ_READAHEAD;
774 req->fh = newSVsv (fh); 994 req->fh = newSVsv (fh);
775 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
776 req->offset = offset; 996 req->offset = offset;
777 req->length = length; 997 req->length = length;
778 998
779 send_req (req); 999 REQ_SEND;
780} 1000}
781 1001
782void 1002void
783aio_stat(fh_or_path,callback=&PL_sv_undef) 1003aio_stat (fh_or_path,callback=&PL_sv_undef)
784 SV * fh_or_path 1004 SV * fh_or_path
785 SV * callback 1005 SV * callback
786 ALIAS: 1006 ALIAS:
787 aio_stat = REQ_STAT 1007 aio_stat = REQ_STAT
788 aio_lstat = REQ_LSTAT 1008 aio_lstat = REQ_LSTAT
789 CODE: 1009 PPCODE:
790{ 1010{
791 dREQ; 1011 dREQ;
792 1012
793 New (0, req->statdata, 1, Stat_t); 1013 New (0, req->statdata, 1, Stat_t);
794 if (!req->statdata) 1014 if (!req->statdata)
795 { 1015 {
796 free_req (req); 1016 req_free (req);
797 croak ("out of memory during aio_req->statdata allocation"); 1017 croak ("out of memory during aio_req->statdata allocation");
798 } 1018 }
799 1019
800 if (SvPOK (fh_or_path)) 1020 if (SvPOK (fh_or_path))
801 { 1021 {
… …
808 req->type = REQ_FSTAT; 1028 req->type = REQ_FSTAT;
809 req->fh = newSVsv (fh_or_path); 1029 req->fh = newSVsv (fh_or_path);
810 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
811 } 1031 }
812 1032
813 send_req (req); 1033 REQ_SEND;
814} 1034}
815 1035
816void 1036void
817aio_unlink(pathname,callback=&PL_sv_undef) 1037aio_unlink (pathname,callback=&PL_sv_undef)
818 SV * pathname 1038 SV * pathname
819 SV * callback 1039 SV * callback
820 ALIAS: 1040 ALIAS:
821 aio_unlink = REQ_UNLINK 1041 aio_unlink = REQ_UNLINK
822 aio_rmdir = REQ_RMDIR 1042 aio_rmdir = REQ_RMDIR
1043 aio_readdir = REQ_READDIR
823 CODE: 1044 PPCODE:
824{ 1045{
825 dREQ; 1046 dREQ;
826 1047
827 req->type = ix; 1048 req->type = ix;
828 req->data = newSVsv (pathname); 1049 req->data = newSVsv (pathname);
829 req->dataptr = SvPVbyte_nolen (req->data); 1050 req->dataptr = SvPVbyte_nolen (req->data);
830 1051
831 send_req (req); 1052 REQ_SEND;
832} 1053}
833 1054
834void 1055void
835aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1056aio_link (oldpath,newpath,callback=&PL_sv_undef)
836 SV * oldpath 1057 SV * oldpath
837 SV * newpath 1058 SV * newpath
838 SV * callback 1059 SV * callback
1060 ALIAS:
1061 aio_link = REQ_LINK
1062 aio_symlink = REQ_SYMLINK
1063 aio_rename = REQ_RENAME
839 CODE: 1064 PPCODE:
840{ 1065{
841 dREQ; 1066 dREQ;
842 1067
843 req->type = REQ_SYMLINK; 1068 req->type = ix;
844 req->fh = newSVsv (oldpath); 1069 req->fh = newSVsv (oldpath);
845 req->data2ptr = SvPVbyte_nolen (req->fh); 1070 req->data2ptr = SvPVbyte_nolen (req->fh);
846 req->data = newSVsv (newpath); 1071 req->data = newSVsv (newpath);
847 req->dataptr = SvPVbyte_nolen (req->data); 1072 req->dataptr = SvPVbyte_nolen (req->data);
848 1073
849 send_req (req); 1074 REQ_SEND;
850} 1075}
851 1076
852void 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
853flush() 1089flush ()
854 PROTOTYPE: 1090 PROTOTYPE:
855 CODE: 1091 CODE:
856 while (nreqs) 1092 while (nreqs)
857 { 1093 {
858 poll_wait (); 1094 poll_wait ();
… …
898 CODE: 1134 CODE:
899 RETVAL = nreqs; 1135 RETVAL = nreqs;
900 OUTPUT: 1136 OUTPUT:
901 RETVAL 1137 RETVAL
902 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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