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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.34 by root, Tue Aug 23 00:03:14 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>
28# else 32# else
29# error sendfile support requested but not available 33# error sendfile support requested but not available
30# endif 34# endif
31#endif 35#endif
32 36
37/* used for struct dirent, AIX doesn't provide it */
38#ifndef NAME_MAX
39# define NAME_MAX 4096
40#endif
41
33#if __ia64 42#if __ia64
34# define STACKSIZE 65536 43# define STACKSIZE 65536
35#else 44#else
36# define STACKSIZE 4096 45# define STACKSIZE 8192
37#endif 46#endif
38 47
39enum { 48enum {
40 REQ_QUIT, 49 REQ_QUIT,
41 REQ_OPEN, REQ_CLOSE, 50 REQ_OPEN, REQ_CLOSE,
42 REQ_READ, REQ_WRITE, REQ_READAHEAD, 51 REQ_READ, REQ_WRITE, REQ_READAHEAD,
43 REQ_SENDFILE, 52 REQ_SENDFILE,
44 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 53 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
45 REQ_FSYNC, REQ_FDATASYNC, 54 REQ_FSYNC, REQ_FDATASYNC,
46 REQ_UNLINK, REQ_RMDIR, 55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
47 REQ_SYMLINK, 56 REQ_READDIR,
57 REQ_LINK, REQ_SYMLINK,
58 REQ_GROUP,
48}; 59};
49 60
61#define AIO_REQ_KLASS "IO::AIO::REQ"
62#define AIO_GRP_KLASS "IO::AIO::GRP"
63
50typedef struct aio_cb { 64typedef struct aio_cb
65{
66 struct aio_cb *grp, *grp_prev, *grp_next;
67
51 struct aio_cb *volatile next; 68 struct aio_cb *volatile next;
52 69
53 int type; 70 SV *self; /* the perl counterpart of this request, if any */
54 71
55 int fd, fd2; 72 SV *data, *callback;
73 SV *fh, *fh2;
74 void *dataptr, *data2ptr;
75 Stat_t *statdata;
56 off_t offset; 76 off_t offset;
57 size_t length; 77 size_t length;
58 ssize_t result; 78 ssize_t result;
79
80 int type;
81 int fd, fd2;
82 int errorno;
83 STRLEN dataoffset;
59 mode_t mode; /* open */ 84 mode_t mode; /* open */
60 int errorno; 85 unsigned char cancelled;
61 SV *data, *callback;
62 SV *fh, *fh2;
63 void *dataptr, *data2ptr;
64 STRLEN dataoffset;
65
66 Stat_t *statdata;
67} aio_cb; 86} aio_cb;
68 87
69typedef aio_cb *aio_req; 88typedef aio_cb *aio_req;
89typedef aio_cb *aio_req_ornot;
90typedef aio_cb *aio_group;
70 91
71static int started, wanted; 92static int started, wanted;
72static volatile int nreqs; 93static volatile int nreqs;
73static int max_outstanding = 1<<30; 94static int max_outstanding = 1<<30;
74static int respipe [2]; 95static int respipe [2];
… …
78static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 99static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
79 100
80static volatile aio_req reqs, reqe; /* queue start, queue end */ 101static volatile aio_req reqs, reqe; /* queue start, queue end */
81static volatile aio_req ress, rese; /* queue start, queue end */ 102static volatile aio_req ress, rese; /* queue start, queue end */
82 103
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
83static void free_req (aio_req req) 123static void req_free (aio_req req)
84{ 124{
125 if (req->self)
126 {
127 sv_unmagic (req->self, PERL_MAGIC_ext);
128 SvREFCNT_dec (req->self);
129 }
130
85 if (req->data) 131 if (req->data)
86 SvREFCNT_dec (req->data); 132 SvREFCNT_dec (req->data);
87 133
88 if (req->fh) 134 if (req->fh)
89 SvREFCNT_dec (req->fh); 135 SvREFCNT_dec (req->fh);
… …
94 if (req->statdata) 140 if (req->statdata)
95 Safefree (req->statdata); 141 Safefree (req->statdata);
96 142
97 if (req->callback) 143 if (req->callback)
98 SvREFCNT_dec (req->callback); 144 SvREFCNT_dec (req->callback);
145
146 if (req->type == REQ_READDIR && req->result >= 0)
147 free (req->data2ptr);
99 148
100 Safefree (req); 149 Safefree (req);
101} 150}
102 151
103static void 152static void
… …
168 PL_statcache = *(req->statdata); 217 PL_statcache = *(req->statdata);
169 } 218 }
170 219
171 ENTER; 220 ENTER;
172 PUSHMARK (SP); 221 PUSHMARK (SP);
173 XPUSHs (sv_2mortal (newSViv (req->result)));
174 222
175 if (req->type == REQ_OPEN) 223 if (req->type == REQ_READDIR)
176 { 224 {
177 /* convert fd to fh */ 225 SV *rv = &PL_sv_undef;
178 SV *fh;
179 226
180 PUTBACK; 227 if (req->result >= 0)
181 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 228 {
182 SPAGAIN; 229 char *buf = req->data2ptr;
230 AV *av = newAV ();
183 231
184 fh = SvREFCNT_inc (POPs); 232 while (req->result)
233 {
234 SV *sv = newSVpv (buf, 0);
185 235
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
186 PUSHMARK (SP); 244 XPUSHs (rv);
187 XPUSHs (sv_2mortal (fh));
188 } 245 }
246 else
247 {
248 XPUSHs (sv_2mortal (newSViv (req->result)));
189 249
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
190 if (SvOK (req->callback)) 266 if (SvOK (req->callback) && !req->cancelled)
191 { 267 {
192 PUTBACK; 268 PUTBACK;
193 call_sv (req->callback, G_VOID | G_EVAL); 269 call_sv (req->callback, G_VOID | G_EVAL);
194 SPAGAIN; 270 SPAGAIN;
195 271
196 if (SvTRUE (ERRSV)) 272 if (SvTRUE (ERRSV))
197 { 273 {
198 free_req (req); 274 req_free (req);
199 croak (0); 275 croak (0);
200 } 276 }
201 } 277 }
202 278
203 LEAVE; 279 LEAVE;
204 280
205 errno = errorno; 281 errno = errorno;
206 count++; 282 count++;
207 } 283 }
208 284
209 free_req (req); 285 req_free (req);
210 } 286 }
211 287
212 return count; 288 return count;
213} 289}
214 290
… …
233 309
234 sigprocmask (SIG_SETMASK, &oldsigset, 0); 310 sigprocmask (SIG_SETMASK, &oldsigset, 0);
235} 311}
236 312
237static void 313static void
238send_req (aio_req req) 314req_send (aio_req req)
239{ 315{
240 while (started < wanted && nreqs >= started) 316 while (started < wanted && nreqs >= started)
241 start_thread (); 317 start_thread ();
242 318
243 nreqs++; 319 nreqs++;
… …
274{ 350{
275 aio_req req; 351 aio_req req;
276 Newz (0, req, 1, aio_cb); 352 Newz (0, req, 1, aio_cb);
277 req->type = REQ_QUIT; 353 req->type = REQ_QUIT;
278 354
279 send_req (req); 355 req_send (req);
280} 356}
281 357
282static void min_parallel (int nthreads) 358static void min_parallel (int nthreads)
283{ 359{
284 if (wanted < nthreads) 360 if (wanted < nthreads)
… …
313 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 389 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
314 croak ("cannot set result pipe to nonblocking mode"); 390 croak ("cannot set result pipe to nonblocking mode");
315 391
316 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 392 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
317 croak ("cannot set result pipe to nonblocking mode"); 393 croak ("cannot set result pipe to nonblocking mode");
318}
319
320static void atfork_prepare (void)
321{
322 pthread_mutex_lock (&reqlock);
323 pthread_mutex_lock (&reslock);
324}
325
326static void atfork_parent (void)
327{
328 pthread_mutex_unlock (&reslock);
329 pthread_mutex_unlock (&reqlock);
330}
331
332static void atfork_child (void)
333{
334 aio_req prv;
335
336 started = 0;
337
338 while (reqs)
339 {
340 prv = reqs;
341 reqs = prv->next;
342 free_req (prv);
343 }
344
345 reqs = reqe = 0;
346
347 while (ress)
348 {
349 prv = ress;
350 ress = prv->next;
351 free_req (prv);
352 }
353
354 ress = rese = 0;
355
356 close (respipe [0]);
357 close (respipe [1]);
358 create_pipe ();
359
360 atfork_parent ();
361} 394}
362 395
363/*****************************************************************************/ 396/*****************************************************************************/
364/* work around various missing functions */ 397/* work around various missing functions */
365 398
… …
370/* 403/*
371 * make our pread/pwrite safe against themselves, but not against 404 * make our pread/pwrite safe against themselves, but not against
372 * 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,
373 * but that's your problem, not mine. 406 * but that's your problem, not mine.
374 */ 407 */
375static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 408static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
376 409
377static ssize_t 410static ssize_t
378pread (int fd, void *buf, size_t count, off_t offset) 411pread (int fd, void *buf, size_t count, off_t offset)
379{ 412{
380 ssize_t res; 413 ssize_t res;
381 off_t ooffset; 414 off_t ooffset;
382 415
383 pthread_mutex_lock (&iolock); 416 pthread_mutex_lock (&preadwritelock);
384 ooffset = lseek (fd, 0, SEEK_CUR); 417 ooffset = lseek (fd, 0, SEEK_CUR);
385 lseek (fd, offset, SEEK_SET); 418 lseek (fd, offset, SEEK_SET);
386 res = read (fd, buf, count); 419 res = read (fd, buf, count);
387 lseek (fd, ooffset, SEEK_SET); 420 lseek (fd, ooffset, SEEK_SET);
388 pthread_mutex_unlock (&iolock); 421 pthread_mutex_unlock (&preadwritelock);
389 422
390 return res; 423 return res;
391} 424}
392 425
393static ssize_t 426static ssize_t
394pwrite (int fd, void *buf, size_t count, off_t offset) 427pwrite (int fd, void *buf, size_t count, off_t offset)
395{ 428{
396 ssize_t res; 429 ssize_t res;
397 off_t ooffset; 430 off_t ooffset;
398 431
399 pthread_mutex_lock (&iolock); 432 pthread_mutex_lock (&preadwritelock);
400 ooffset = lseek (fd, 0, SEEK_CUR); 433 ooffset = lseek (fd, 0, SEEK_CUR);
401 lseek (fd, offset, SEEK_SET); 434 lseek (fd, offset, SEEK_SET);
402 res = write (fd, buf, count); 435 res = write (fd, buf, count);
403 lseek (fd, offset, SEEK_SET); 436 lseek (fd, offset, SEEK_SET);
404 pthread_mutex_unlock (&iolock); 437 pthread_mutex_unlock (&preadwritelock);
405 438
406 return res; 439 return res;
407} 440}
408#endif 441#endif
409 442
… …
412#endif 445#endif
413 446
414#if !HAVE_READAHEAD 447#if !HAVE_READAHEAD
415# define readahead aio_readahead 448# define readahead aio_readahead
416 449
417static char readahead_buf[4096];
418
419static ssize_t 450static ssize_t
420readahead (int fd, off_t offset, size_t count) 451readahead (int fd, off_t offset, size_t count)
421{ 452{
453 char readahead_buf[4096];
454
422 while (count > 0) 455 while (count > 0)
423 { 456 {
424 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 457 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
425 458
426 pread (fd, readahead_buf, len, offset); 459 pread (fd, readahead_buf, len, offset);
… …
430 463
431 errno = 0; 464 errno = 0;
432} 465}
433#endif 466#endif
434 467
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
435/* sendfile always needs emulation */ 499/* sendfile always needs emulation */
436static ssize_t 500static ssize_t
437sendfile_ (int ofd, int ifd, off_t offset, size_t count) 501sendfile_ (int ofd, int ifd, off_t offset, size_t count)
438{ 502{
439 ssize_t res; 503 ssize_t res;
440 504
441 if (!count) 505 if (!count)
442 return 0; 506 return 0;
443 507
508#if HAVE_SENDFILE
444#if __linux 509# if __linux
445 res = sendfile (ofd, ifd, &offset, count); 510 res = sendfile (ofd, ifd, &offset, count);
446 511
447#elif __freebsd 512# elif __freebsd
448 /* 513 /*
449 * 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
450 * wasted on making it similar to other i/o functions. 515 * wasted on making it similar to other I/O functions.
451 */ 516 */
452 { 517 {
453 off_t sbytes; 518 off_t sbytes;
454 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 519 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
455 520
456 if (!res && errno == EAGAIN) 521 if (res < 0 && sbytes)
457 /* maybe on others, too, as usual, the manpage leaves you guessing */ 522 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
458 res = sbytes; 523 res = sbytes;
459 } 524 }
460 525
461#elif __hpux 526# elif __hpux
462 res = sendfile (ofd, ifd, offset, count, 0, 0); 527 res = sendfile (ofd, ifd, offset, count, 0, 0);
463 528
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
464#else 546#else
465 res = -1; 547 res = -1;
466 errno = ENOSYS; 548 errno = ENOSYS;
467#endif 549#endif
468 550
551 if (res < 0
469 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 )
470 { 558 {
471 /* emulate sendfile. this is a major pain in the ass */ 559 /* emulate sendfile. this is a major pain in the ass */
472 char *buf = malloc (4096); 560 char buf[4096];
473 res = 0; 561 res = 0;
474 562
475 for (;;) 563 while (count)
476 { 564 {
477 ssize_t cnt; 565 ssize_t cnt;
478 566
479 cnt = pread (ifd, buf, 4096, offset); 567 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
480 568
481 if (cnt <= 0) 569 if (cnt <= 0)
482 { 570 {
483 if (cnt && !res) res = -1; 571 if (cnt && !res) res = -1;
484 break; 572 break;
485 } 573 }
486 574
487 cnt = write (ofd, buf, cnt); 575 cnt = write (ofd, buf, cnt);
488 576
489 if (cnt <= 0) 577 if (cnt <= 0)
490 { 578 {
491 if (cnt && !res) res = -1; 579 if (cnt && !res) res = -1;
492 break; 580 break;
493 } 581 }
494 582
495 offset += cnt; 583 offset += cnt;
496 res += cnt; 584 res += cnt;
585 count -= cnt;
497 } 586 }
498
499 {
500 int errorno = errno;
501 free (buf);
502 errno = errorno;
503 }
504 } 587 }
505 588
506 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;
507} 654}
508 655
509/*****************************************************************************/ 656/*****************************************************************************/
510 657
511static void * 658static void *
… …
536 683
537 pthread_mutex_unlock (&reqlock); 684 pthread_mutex_unlock (&reqlock);
538 685
539 errno = 0; /* strictly unnecessary */ 686 errno = 0; /* strictly unnecessary */
540 687
541 type = req->type; 688 if (!req->cancelled)
542
543 switch (type) 689 switch (req->type)
544 { 690 {
545 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;
546 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;
547 693
548 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;
549 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;
550 696
551 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
552 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
553 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
554 700
555 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;
556 case REQ_CLOSE: req->result = close (req->fd); break; 702 case REQ_CLOSE: req->result = close (req->fd); break;
557 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
558 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;
559 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
560 708
561 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
562 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;
563 712
564 case REQ_QUIT: 713 case REQ_QUIT:
565 break; 714 break;
566 715
567 default: 716 default:
568 req->result = ENOSYS; 717 req->result = ENOSYS;
569 break; 718 break;
570 } 719 }
571 720
572 req->errorno = errno; 721 req->errorno = errno;
573 722
574 pthread_mutex_lock (&reslock); 723 pthread_mutex_lock (&reslock);
575 724
… …
593 while (type != REQ_QUIT); 742 while (type != REQ_QUIT);
594 743
595 return 0; 744 return 0;
596} 745}
597 746
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
598#define dREQ \ 804#define dREQ \
599 aio_req req; \ 805 aio_req req; \
600 \ 806 \
601 if (SvOK (callback) && !SvROK (callback)) \ 807 if (SvOK (callback) && !SvROK (callback)) \
602 croak ("clalback must be undef or of reference type"); \ 808 croak ("callback must be undef or of reference type"); \
603 \ 809 \
604 Newz (0, req, 1, aio_cb); \ 810 Newz (0, req, 1, aio_cb); \
605 if (!req) \ 811 if (!req) \
606 croak ("out of memory during aio_req allocation"); \ 812 croak ("out of memory during aio_req allocation"); \
607 \ 813 \
608 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));
609 821
610MODULE = IO::AIO PACKAGE = IO::AIO 822MODULE = IO::AIO PACKAGE = IO::AIO
611 823
612PROTOTYPES: ENABLE 824PROTOTYPES: ENABLE
613 825
614BOOT: 826BOOT:
615{ 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
616 create_pipe (); 833 create_pipe ();
617 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
618} 835}
619 836
620void 837void
621min_parallel(nthreads) 838min_parallel (nthreads)
622 int nthreads 839 int nthreads
623 PROTOTYPE: $ 840 PROTOTYPE: $
624 841
625void 842void
626max_parallel(nthreads) 843max_parallel (nthreads)
627 int nthreads 844 int nthreads
628 PROTOTYPE: $ 845 PROTOTYPE: $
629 846
630int 847int
631max_outstanding(nreqs) 848max_outstanding (nreqs)
632 int nreqs 849 int nreqs
633 PROTOTYPE: $ 850 PROTOTYPE: $
634 CODE: 851 CODE:
635 RETVAL = max_outstanding; 852 RETVAL = max_outstanding;
636 max_outstanding = nreqs; 853 max_outstanding = nreqs;
637 854
638void 855void
639aio_open(pathname,flags,mode,callback=&PL_sv_undef) 856aio_open (pathname,flags,mode,callback=&PL_sv_undef)
640 SV * pathname 857 SV * pathname
641 int flags 858 int flags
642 int mode 859 int mode
643 SV * callback 860 SV * callback
644 PROTOTYPE: $$$;$ 861 PROTOTYPE: $$$;$
645 CODE: 862 PPCODE:
646{ 863{
647 dREQ; 864 dREQ;
648 865
649 req->type = REQ_OPEN; 866 req->type = REQ_OPEN;
650 req->data = newSVsv (pathname); 867 req->data = newSVsv (pathname);
651 req->dataptr = SvPVbyte_nolen (req->data); 868 req->dataptr = SvPVbyte_nolen (req->data);
652 req->fd = flags; 869 req->fd = flags;
653 req->mode = mode; 870 req->mode = mode;
654 871
655 send_req (req); 872 REQ_SEND;
656} 873}
657 874
658void 875void
659aio_close(fh,callback=&PL_sv_undef) 876aio_close (fh,callback=&PL_sv_undef)
660 SV * fh 877 SV * fh
661 SV * callback 878 SV * callback
662 PROTOTYPE: $;$ 879 PROTOTYPE: $;$
663 ALIAS: 880 ALIAS:
664 aio_close = REQ_CLOSE 881 aio_close = REQ_CLOSE
665 aio_fsync = REQ_FSYNC 882 aio_fsync = REQ_FSYNC
666 aio_fdatasync = REQ_FDATASYNC 883 aio_fdatasync = REQ_FDATASYNC
667 CODE: 884 PPCODE:
668{ 885{
669 dREQ; 886 dREQ;
670 887
671 req->type = ix; 888 req->type = ix;
672 req->fh = newSVsv (fh); 889 req->fh = newSVsv (fh);
673 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
674 891
675 send_req (req); 892 REQ_SEND (req);
676} 893}
677 894
678void 895void
679aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
680 SV * fh 897 SV * fh
681 UV offset 898 UV offset
682 UV length 899 UV length
683 SV * data 900 SV * data
684 UV dataoffset 901 UV dataoffset
685 SV * callback 902 SV * callback
686 ALIAS: 903 ALIAS:
687 aio_read = REQ_READ 904 aio_read = REQ_READ
688 aio_write = REQ_WRITE 905 aio_write = REQ_WRITE
689 PROTOTYPE: $$$$$;$ 906 PROTOTYPE: $$$$$;$
690 CODE: 907 PPCODE:
691{ 908{
692 aio_req req; 909 aio_req req;
693 STRLEN svlen; 910 STRLEN svlen;
694 char *svptr = SvPVbyte (data, svlen); 911 char *svptr = SvPVbyte (data, svlen);
695 912
… …
733 { 950 {
734 SvREADONLY_on (data); 951 SvREADONLY_on (data);
735 req->data2ptr = (void *)data; 952 req->data2ptr = (void *)data;
736 } 953 }
737 954
738 send_req (req); 955 REQ_SEND;
739 } 956 }
740} 957}
741 958
742void 959void
743aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
744 SV * out_fh 961 SV * out_fh
745 SV * in_fh 962 SV * in_fh
746 UV in_offset 963 UV in_offset
747 UV length 964 UV length
748 SV * callback 965 SV * callback
749 PROTOTYPE: $$$$;$ 966 PROTOTYPE: $$$$;$
750 CODE: 967 PPCODE:
751{ 968{
752 dREQ; 969 dREQ;
753 970
754 req->type = REQ_SENDFILE; 971 req->type = REQ_SENDFILE;
755 req->fh = newSVsv (out_fh); 972 req->fh = newSVsv (out_fh);
… …
757 req->fh2 = newSVsv (in_fh); 974 req->fh2 = newSVsv (in_fh);
758 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
759 req->offset = in_offset; 976 req->offset = in_offset;
760 req->length = length; 977 req->length = length;
761 978
762 send_req (req); 979 REQ_SEND;
763} 980}
764 981
765void 982void
766aio_readahead(fh,offset,length,callback=&PL_sv_undef) 983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
767 SV * fh 984 SV * fh
768 UV offset 985 UV offset
769 IV length 986 IV length
770 SV * callback 987 SV * callback
771 PROTOTYPE: $$$;$ 988 PROTOTYPE: $$$;$
772 CODE: 989 PPCODE:
773{ 990{
774 dREQ; 991 dREQ;
775 992
776 req->type = REQ_READAHEAD; 993 req->type = REQ_READAHEAD;
777 req->fh = newSVsv (fh); 994 req->fh = newSVsv (fh);
778 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
779 req->offset = offset; 996 req->offset = offset;
780 req->length = length; 997 req->length = length;
781 998
782 send_req (req); 999 REQ_SEND;
783} 1000}
784 1001
785void 1002void
786aio_stat(fh_or_path,callback=&PL_sv_undef) 1003aio_stat (fh_or_path,callback=&PL_sv_undef)
787 SV * fh_or_path 1004 SV * fh_or_path
788 SV * callback 1005 SV * callback
789 ALIAS: 1006 ALIAS:
790 aio_stat = REQ_STAT 1007 aio_stat = REQ_STAT
791 aio_lstat = REQ_LSTAT 1008 aio_lstat = REQ_LSTAT
792 CODE: 1009 PPCODE:
793{ 1010{
794 dREQ; 1011 dREQ;
795 1012
796 New (0, req->statdata, 1, Stat_t); 1013 New (0, req->statdata, 1, Stat_t);
797 if (!req->statdata) 1014 if (!req->statdata)
798 { 1015 {
799 free_req (req); 1016 req_free (req);
800 croak ("out of memory during aio_req->statdata allocation"); 1017 croak ("out of memory during aio_req->statdata allocation");
801 } 1018 }
802 1019
803 if (SvPOK (fh_or_path)) 1020 if (SvPOK (fh_or_path))
804 { 1021 {
… …
811 req->type = REQ_FSTAT; 1028 req->type = REQ_FSTAT;
812 req->fh = newSVsv (fh_or_path); 1029 req->fh = newSVsv (fh_or_path);
813 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
814 } 1031 }
815 1032
816 send_req (req); 1033 REQ_SEND;
817} 1034}
818 1035
819void 1036void
820aio_unlink(pathname,callback=&PL_sv_undef) 1037aio_unlink (pathname,callback=&PL_sv_undef)
821 SV * pathname 1038 SV * pathname
822 SV * callback 1039 SV * callback
823 ALIAS: 1040 ALIAS:
824 aio_unlink = REQ_UNLINK 1041 aio_unlink = REQ_UNLINK
825 aio_rmdir = REQ_RMDIR 1042 aio_rmdir = REQ_RMDIR
1043 aio_readdir = REQ_READDIR
826 CODE: 1044 PPCODE:
827{ 1045{
828 dREQ; 1046 dREQ;
829 1047
830 req->type = ix; 1048 req->type = ix;
831 req->data = newSVsv (pathname); 1049 req->data = newSVsv (pathname);
832 req->dataptr = SvPVbyte_nolen (req->data); 1050 req->dataptr = SvPVbyte_nolen (req->data);
833 1051
834 send_req (req); 1052 REQ_SEND;
835} 1053}
836 1054
837void 1055void
838aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1056aio_link (oldpath,newpath,callback=&PL_sv_undef)
839 SV * oldpath 1057 SV * oldpath
840 SV * newpath 1058 SV * newpath
841 SV * callback 1059 SV * callback
1060 ALIAS:
1061 aio_link = REQ_LINK
1062 aio_symlink = REQ_SYMLINK
1063 aio_rename = REQ_RENAME
842 CODE: 1064 PPCODE:
843{ 1065{
844 dREQ; 1066 dREQ;
845 1067
846 req->type = REQ_SYMLINK; 1068 req->type = ix;
847 req->fh = newSVsv (oldpath); 1069 req->fh = newSVsv (oldpath);
848 req->data2ptr = SvPVbyte_nolen (req->fh); 1070 req->data2ptr = SvPVbyte_nolen (req->fh);
849 req->data = newSVsv (newpath); 1071 req->data = newSVsv (newpath);
850 req->dataptr = SvPVbyte_nolen (req->data); 1072 req->dataptr = SvPVbyte_nolen (req->data);
851 1073
852 send_req (req); 1074 REQ_SEND;
853} 1075}
854 1076
855void 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
856flush() 1089flush ()
857 PROTOTYPE: 1090 PROTOTYPE:
858 CODE: 1091 CODE:
859 while (nreqs) 1092 while (nreqs)
860 { 1093 {
861 poll_wait (); 1094 poll_wait ();
… …
901 CODE: 1134 CODE:
902 RETVAL = nreqs; 1135 RETVAL = nreqs;
903 OUTPUT: 1136 OUTPUT:
904 RETVAL 1137 RETVAL
905 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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