ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/IO-AIO/AIO.xs
(Generate patch)

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 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)
455 /* maybe on others, too, as usual, the manpage leaves you guessing */ 522 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
456 res = sbytes; 523 res = sbytes;
457 } 524 }
458 525
459#elif __hpux 526# elif __hpux
460 res = sendfile (ofd, ifd, offset, count, 0, 0); 527 res = sendfile (ofd, ifd, offset, count, 0, 0);
461 528
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
462#else 546#else
463 res = -1; 547 res = -1;
464 errno = ENOSYS; 548 errno = ENOSYS;
465#endif 549#endif
466 550
551 if (res < 0
467 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 )
468 { 558 {
469 /* emulate sendfile. this is a major pain in the ass */ 559 /* emulate sendfile. this is a major pain in the ass */
470 char *buf = malloc (4096); 560 char buf[4096];
471 res = 0; 561 res = 0;
472 562
473 for (;;) 563 while (count)
474 { 564 {
475 ssize_t cnt; 565 ssize_t cnt;
476 566
477 cnt = pread (ifd, buf, 4096, offset); 567 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
478 568
479 if (cnt <= 0) 569 if (cnt <= 0)
480 { 570 {
481 if (cnt && !res) res = -1; 571 if (cnt && !res) res = -1;
482 break; 572 break;
483 } 573 }
484 574
485 cnt = write (ofd, buf, cnt); 575 cnt = write (ofd, buf, cnt);
486 576
487 if (cnt <= 0) 577 if (cnt <= 0)
488 { 578 {
489 if (cnt && !res) res = -1; 579 if (cnt && !res) res = -1;
490 break; 580 break;
491 } 581 }
492 582
493 offset += cnt; 583 offset += cnt;
494 res += cnt; 584 res += cnt;
585 count -= cnt;
495 } 586 }
496
497 {
498 int errorno = errno;
499 free (buf);
500 errno = errorno;
501 }
502 } 587 }
503 588
504 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;
505} 654}
506 655
507/*****************************************************************************/ 656/*****************************************************************************/
508 657
509static void * 658static void *
… …
534 683
535 pthread_mutex_unlock (&reqlock); 684 pthread_mutex_unlock (&reqlock);
536 685
537 errno = 0; /* strictly unnecessary */ 686 errno = 0; /* strictly unnecessary */
538 687
539 type = req->type; 688 if (!req->cancelled)
540
541 switch (type) 689 switch (req->type)
542 { 690 {
543 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;
544 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;
545 693
546 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;
547 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;
548 696
549 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552 700
553 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;
554 case REQ_CLOSE: req->result = close (req->fd); break; 702 case REQ_CLOSE: req->result = close (req->fd); break;
555 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556 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;
557 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558 708
559 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560 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;
561 712
562 case REQ_QUIT: 713 case REQ_QUIT:
563 break; 714 break;
564 715
565 default: 716 default:
566 req->result = ENOSYS; 717 req->result = ENOSYS;
567 break; 718 break;
568 } 719 }
569 720
570 req->errorno = errno; 721 req->errorno = errno;
571 722
572 pthread_mutex_lock (&reslock); 723 pthread_mutex_lock (&reslock);
573 724
… …
591 while (type != REQ_QUIT); 742 while (type != REQ_QUIT);
592 743
593 return 0; 744 return 0;
594} 745}
595 746
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
596#define dREQ \ 804#define dREQ \
597 aio_req req; \ 805 aio_req req; \
598 \ 806 \
599 if (SvOK (callback) && !SvROK (callback)) \ 807 if (SvOK (callback) && !SvROK (callback)) \
600 croak ("clalback must be undef or of reference type"); \ 808 croak ("callback must be undef or of reference type"); \
601 \ 809 \
602 Newz (0, req, 1, aio_cb); \ 810 Newz (0, req, 1, aio_cb); \
603 if (!req) \ 811 if (!req) \
604 croak ("out of memory during aio_req allocation"); \ 812 croak ("out of memory during aio_req allocation"); \
605 \ 813 \
606 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));
607 821
608MODULE = IO::AIO PACKAGE = IO::AIO 822MODULE = IO::AIO PACKAGE = IO::AIO
609 823
610PROTOTYPES: ENABLE 824PROTOTYPES: ENABLE
611 825
612BOOT: 826BOOT:
613{ 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
614 create_pipe (); 833 create_pipe ();
615 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
616} 835}
617 836
618void 837void
619min_parallel(nthreads) 838min_parallel (nthreads)
620 int nthreads 839 int nthreads
621 PROTOTYPE: $ 840 PROTOTYPE: $
622 841
623void 842void
624max_parallel(nthreads) 843max_parallel (nthreads)
625 int nthreads 844 int nthreads
626 PROTOTYPE: $ 845 PROTOTYPE: $
627 846
628int 847int
629max_outstanding(nreqs) 848max_outstanding (nreqs)
630 int nreqs 849 int nreqs
631 PROTOTYPE: $ 850 PROTOTYPE: $
632 CODE: 851 CODE:
633 RETVAL = max_outstanding; 852 RETVAL = max_outstanding;
634 max_outstanding = nreqs; 853 max_outstanding = nreqs;
635 854
636void 855void
637aio_open(pathname,flags,mode,callback=&PL_sv_undef) 856aio_open (pathname,flags,mode,callback=&PL_sv_undef)
638 SV * pathname 857 SV * pathname
639 int flags 858 int flags
640 int mode 859 int mode
641 SV * callback 860 SV * callback
642 PROTOTYPE: $$$;$ 861 PROTOTYPE: $$$;$
643 CODE: 862 PPCODE:
644{ 863{
645 dREQ; 864 dREQ;
646 865
647 req->type = REQ_OPEN; 866 req->type = REQ_OPEN;
648 req->data = newSVsv (pathname); 867 req->data = newSVsv (pathname);
649 req->dataptr = SvPVbyte_nolen (req->data); 868 req->dataptr = SvPVbyte_nolen (req->data);
650 req->fd = flags; 869 req->fd = flags;
651 req->mode = mode; 870 req->mode = mode;
652 871
653 send_req (req); 872 REQ_SEND;
654} 873}
655 874
656void 875void
657aio_close(fh,callback=&PL_sv_undef) 876aio_close (fh,callback=&PL_sv_undef)
658 SV * fh 877 SV * fh
659 SV * callback 878 SV * callback
660 PROTOTYPE: $;$ 879 PROTOTYPE: $;$
661 ALIAS: 880 ALIAS:
662 aio_close = REQ_CLOSE 881 aio_close = REQ_CLOSE
663 aio_fsync = REQ_FSYNC 882 aio_fsync = REQ_FSYNC
664 aio_fdatasync = REQ_FDATASYNC 883 aio_fdatasync = REQ_FDATASYNC
665 CODE: 884 PPCODE:
666{ 885{
667 dREQ; 886 dREQ;
668 887
669 req->type = ix; 888 req->type = ix;
670 req->fh = newSVsv (fh); 889 req->fh = newSVsv (fh);
671 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
672 891
673 send_req (req); 892 REQ_SEND (req);
674} 893}
675 894
676void 895void
677aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
678 SV * fh 897 SV * fh
679 UV offset 898 UV offset
680 UV length 899 UV length
681 SV * data 900 SV * data
682 UV dataoffset 901 UV dataoffset
683 SV * callback 902 SV * callback
684 ALIAS: 903 ALIAS:
685 aio_read = REQ_READ 904 aio_read = REQ_READ
686 aio_write = REQ_WRITE 905 aio_write = REQ_WRITE
687 PROTOTYPE: $$$$$;$ 906 PROTOTYPE: $$$$$;$
688 CODE: 907 PPCODE:
689{ 908{
690 aio_req req; 909 aio_req req;
691 STRLEN svlen; 910 STRLEN svlen;
692 char *svptr = SvPVbyte (data, svlen); 911 char *svptr = SvPVbyte (data, svlen);
693 912
… …
731 { 950 {
732 SvREADONLY_on (data); 951 SvREADONLY_on (data);
733 req->data2ptr = (void *)data; 952 req->data2ptr = (void *)data;
734 } 953 }
735 954
736 send_req (req); 955 REQ_SEND;
737 } 956 }
738} 957}
739 958
740void 959void
741aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
742 SV * out_fh 961 SV * out_fh
743 SV * in_fh 962 SV * in_fh
744 UV in_offset 963 UV in_offset
745 UV length 964 UV length
746 SV * callback 965 SV * callback
747 PROTOTYPE: $$$$;$ 966 PROTOTYPE: $$$$;$
748 CODE: 967 PPCODE:
749{ 968{
750 dREQ; 969 dREQ;
751 970
752 req->type = REQ_SENDFILE; 971 req->type = REQ_SENDFILE;
753 req->fh = newSVsv (out_fh); 972 req->fh = newSVsv (out_fh);
… …
755 req->fh2 = newSVsv (in_fh); 974 req->fh2 = newSVsv (in_fh);
756 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757 req->offset = in_offset; 976 req->offset = in_offset;
758 req->length = length; 977 req->length = length;
759 978
760 send_req (req); 979 REQ_SEND;
761} 980}
762 981
763void 982void
764aio_readahead(fh,offset,length,callback=&PL_sv_undef) 983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
765 SV * fh 984 SV * fh
766 UV offset 985 UV offset
767 IV length 986 IV length
768 SV * callback 987 SV * callback
769 PROTOTYPE: $$$;$ 988 PROTOTYPE: $$$;$
770 CODE: 989 PPCODE:
771{ 990{
772 dREQ; 991 dREQ;
773 992
774 req->type = REQ_READAHEAD; 993 req->type = REQ_READAHEAD;
775 req->fh = newSVsv (fh); 994 req->fh = newSVsv (fh);
776 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777 req->offset = offset; 996 req->offset = offset;
778 req->length = length; 997 req->length = length;
779 998
780 send_req (req); 999 REQ_SEND;
781} 1000}
782 1001
783void 1002void
784aio_stat(fh_or_path,callback=&PL_sv_undef) 1003aio_stat (fh_or_path,callback=&PL_sv_undef)
785 SV * fh_or_path 1004 SV * fh_or_path
786 SV * callback 1005 SV * callback
787 ALIAS: 1006 ALIAS:
788 aio_stat = REQ_STAT 1007 aio_stat = REQ_STAT
789 aio_lstat = REQ_LSTAT 1008 aio_lstat = REQ_LSTAT
790 CODE: 1009 PPCODE:
791{ 1010{
792 dREQ; 1011 dREQ;
793 1012
794 New (0, req->statdata, 1, Stat_t); 1013 New (0, req->statdata, 1, Stat_t);
795 if (!req->statdata) 1014 if (!req->statdata)
796 { 1015 {
797 free_req (req); 1016 req_free (req);
798 croak ("out of memory during aio_req->statdata allocation"); 1017 croak ("out of memory during aio_req->statdata allocation");
799 } 1018 }
800 1019
801 if (SvPOK (fh_or_path)) 1020 if (SvPOK (fh_or_path))
802 { 1021 {
… …
809 req->type = REQ_FSTAT; 1028 req->type = REQ_FSTAT;
810 req->fh = newSVsv (fh_or_path); 1029 req->fh = newSVsv (fh_or_path);
811 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
812 } 1031 }
813 1032
814 send_req (req); 1033 REQ_SEND;
815} 1034}
816 1035
817void 1036void
818aio_unlink(pathname,callback=&PL_sv_undef) 1037aio_unlink (pathname,callback=&PL_sv_undef)
819 SV * pathname 1038 SV * pathname
820 SV * callback 1039 SV * callback
821 ALIAS: 1040 ALIAS:
822 aio_unlink = REQ_UNLINK 1041 aio_unlink = REQ_UNLINK
823 aio_rmdir = REQ_RMDIR 1042 aio_rmdir = REQ_RMDIR
1043 aio_readdir = REQ_READDIR
824 CODE: 1044 PPCODE:
825{ 1045{
826 dREQ; 1046 dREQ;
827 1047
828 req->type = ix; 1048 req->type = ix;
829 req->data = newSVsv (pathname); 1049 req->data = newSVsv (pathname);
830 req->dataptr = SvPVbyte_nolen (req->data); 1050 req->dataptr = SvPVbyte_nolen (req->data);
831 1051
832 send_req (req); 1052 REQ_SEND;
833} 1053}
834 1054
835void 1055void
836aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1056aio_link (oldpath,newpath,callback=&PL_sv_undef)
837 SV * oldpath 1057 SV * oldpath
838 SV * newpath 1058 SV * newpath
839 SV * callback 1059 SV * callback
1060 ALIAS:
1061 aio_link = REQ_LINK
1062 aio_symlink = REQ_SYMLINK
1063 aio_rename = REQ_RENAME
840 CODE: 1064 PPCODE:
841{ 1065{
842 dREQ; 1066 dREQ;
843 1067
844 req->type = REQ_SYMLINK; 1068 req->type = ix;
845 req->fh = newSVsv (oldpath); 1069 req->fh = newSVsv (oldpath);
846 req->data2ptr = SvPVbyte_nolen (req->fh); 1070 req->data2ptr = SvPVbyte_nolen (req->fh);
847 req->data = newSVsv (newpath); 1071 req->data = newSVsv (newpath);
848 req->dataptr = SvPVbyte_nolen (req->data); 1072 req->dataptr = SvPVbyte_nolen (req->data);
849 1073
850 send_req (req); 1074 REQ_SEND;
851} 1075}
852 1076
853void 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
854flush() 1089flush ()
855 PROTOTYPE: 1090 PROTOTYPE:
856 CODE: 1091 CODE:
857 while (nreqs) 1092 while (nreqs)
858 { 1093 {
859 poll_wait (); 1094 poll_wait ();
… …
899 CODE: 1134 CODE:
900 RETVAL = nreqs; 1135 RETVAL = nreqs;
901 OUTPUT: 1136 OUTPUT:
902 RETVAL 1137 RETVAL
903 1138
1139MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140
1141void
1142cancel (aio_req_ornot req)
1143 PROTOTYPE:
1144 CODE:
1145 req->cancelled = 1;
1146

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines