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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.17 by root, Sun Jul 31 18:45:48 2005 UTC vs.
Revision 1.24 by root, Wed Aug 17 03:01:56 2005 UTC

1#define _REENTRANT 1
2#include <errno.h>
3
1#include "EXTERN.h" 4#include "EXTERN.h"
2#include "perl.h" 5#include "perl.h"
3#include "XSUB.h" 6#include "XSUB.h"
4 7
5#include "autoconf/config.h" 8#include "autoconf/config.h"
… …
26 29
27enum { 30enum {
28 REQ_QUIT, 31 REQ_QUIT,
29 REQ_OPEN, REQ_CLOSE, 32 REQ_OPEN, REQ_CLOSE,
30 REQ_READ, REQ_WRITE, REQ_READAHEAD, 33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
31 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 34 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
32 REQ_FSYNC, REQ_FDATASYNC, 35 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR,
37 REQ_SYMLINK,
33}; 38};
34 39
35typedef struct aio_cb { 40typedef struct aio_cb {
36 struct aio_cb *volatile next; 41 struct aio_cb *volatile next;
37 42
… …
42 size_t length; 47 size_t length;
43 ssize_t result; 48 ssize_t result;
44 mode_t mode; /* open */ 49 mode_t mode; /* open */
45 int errorno; 50 int errorno;
46 SV *data, *callback, *fh; 51 SV *data, *callback, *fh;
47 void *dataptr; 52 void *dataptr, *data2ptr;
48 STRLEN dataoffset; 53 STRLEN dataoffset;
49 54
50 Stat_t *statdata; 55 Stat_t *statdata;
51} aio_cb; 56} aio_cb;
52 57
… …
57static int max_outstanding = 1<<30; 62static int max_outstanding = 1<<30;
58static int respipe [2]; 63static int respipe [2];
59 64
60static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
61static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
62static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 68static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63 69
64static volatile aio_req reqs, reqe; /* queue start, queue end */ 70static volatile aio_req reqs, reqe; /* queue start, queue end */
65static volatile aio_req ress, rese; /* queue start, queue end */ 71static volatile aio_req ress, rese; /* queue start, queue end */
66 72
… …
80static int 86static int
81poll_cb () 87poll_cb ()
82{ 88{
83 dSP; 89 dSP;
84 int count = 0; 90 int count = 0;
91 int do_croak = 0;
85 aio_req req, prv; 92 aio_req req, prv;
86 93
87 pthread_mutex_lock (&reslock); 94 pthread_mutex_lock (&reslock);
88 95
89 { 96 {
90 /* read any signals sent by the worker threads */ 97 /* read any signals sent by the worker threads */
91 char buf [32]; 98 char buf [32];
92 while (read (respipe [0], buf, 32) > 0) 99 while (read (respipe [0], buf, 32) == 32)
93 ; 100 ;
94 } 101 }
95 102
96 req = ress; 103 req = ress;
97 ress = rese = 0; 104 ress = rese = 0;
… …
152 PUTBACK; 159 PUTBACK;
153 call_sv (req->callback, G_VOID | G_EVAL); 160 call_sv (req->callback, G_VOID | G_EVAL);
154 SPAGAIN; 161 SPAGAIN;
155 } 162 }
156 163
164 do_croak = SvTRUE (ERRSV);
165
157 LEAVE; 166 LEAVE;
158 167
159 if (req->callback) 168 if (req->callback)
160 SvREFCNT_dec (req->callback); 169 SvREFCNT_dec (req->callback);
161 170
… …
165 174
166 prv = req; 175 prv = req;
167 req = req->next; 176 req = req->next;
168 Safefree (prv); 177 Safefree (prv);
169 178
170 /* TODO: croak on errors? */ 179 if (do_croak)
180 croak (0);
171 } 181 }
172 182
173 return count; 183 return count;
174} 184}
175 185
… …
230 req->type = REQ_QUIT; 240 req->type = REQ_QUIT;
231 241
232 send_req (req); 242 send_req (req);
233} 243}
234 244
245
246static void min_parallel (int nthreads)
247{
248 while (nthreads > started)
249 start_thread ();
250}
251
252static void max_parallel (int nthreads)
253{
254 int cur = started;
255 while (cur > nthreads)
256 {
257 end_thread ();
258 cur--;
259 }
260
261 while (started > nthreads)
262 {
263 poll_wait ();
264 poll_cb ();
265 }
266}
267
268static int fork_started;
269
270static void atfork_prepare (void)
271{
272 pthread_mutex_lock (&frklock);
273
274 fork_started = started;
275
276 for (;;) {
277 while (nreqs)
278 {
279 poll_wait ();
280 poll_cb ();
281 }
282
283 max_parallel (0);
284
285 pthread_mutex_lock (&reqlock);
286
287 if (!nreqs && !started)
288 break;
289
290 pthread_mutex_unlock (&reqlock);
291
292 min_parallel (fork_started);
293 }
294
295 pthread_mutex_lock (&reslock);
296
297 assert (!started);
298 assert (!nreqs);
299 assert (!reqs && !reqe);
300 assert (!ress && !rese);
301}
302
303static void atfork_parent (void)
304{
305 pthread_mutex_unlock (&reslock);
306 min_parallel (fork_started);
307 pthread_mutex_unlock (&reqlock);
308 pthread_mutex_unlock (&frklock);
309}
310
311static void atfork_child (void)
312{
313 reqs = reqe = 0;
314
315 atfork_parent ();
316}
317
318/*****************************************************************************/
235/* work around various missing functions */ 319/* work around various missing functions */
236 320
237#if !HAVE_PREADWRITE 321#if !HAVE_PREADWRITE
238# define pread aio_pread 322# define pread aio_pread
239# define pwrite aio_pwrite 323# define pwrite aio_pwrite
… …
301 385
302 errno = 0; 386 errno = 0;
303} 387}
304#endif 388#endif
305 389
390/*****************************************************************************/
391
306static void * 392static void *
307aio_proc (void *thr_arg) 393aio_proc (void *thr_arg)
308{ 394{
309 aio_req req; 395 aio_req req;
310 int type; 396 int type;
… …
347 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 433 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
348 434
349 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 435 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
350 case REQ_CLOSE: req->result = close (req->fd); break; 436 case REQ_CLOSE: req->result = close (req->fd); break;
351 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 437 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
438 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
439 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
352 440
353 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 441 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
354 case REQ_FSYNC: req->result = fsync (req->fd); break; 442 case REQ_FSYNC: req->result = fsync (req->fd); break;
355 443
356 case REQ_QUIT: 444 case REQ_QUIT:
… …
385 while (type != REQ_QUIT); 473 while (type != REQ_QUIT);
386 474
387 return 0; 475 return 0;
388} 476}
389 477
478#define dREQ \
479 aio_req req; \
480 \
481 if (SvOK (callback) && !SvROK (callback)) \
482 croak ("clalback must be undef or of reference type"); \
483 \
484 Newz (0, req, 1, aio_cb); \
485 if (!req) \
486 croak ("out of memory during aio_req allocation"); \
487 \
488 req->callback = SvREFCNT_inc (callback);
489
390MODULE = IO::AIO PACKAGE = IO::AIO 490MODULE = IO::AIO PACKAGE = IO::AIO
391 491
392PROTOTYPES: ENABLE 492PROTOTYPES: ENABLE
393 493
394BOOT: 494BOOT:
… …
399 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 499 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
400 croak ("cannot set result pipe to nonblocking mode"); 500 croak ("cannot set result pipe to nonblocking mode");
401 501
402 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 502 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
403 croak ("cannot set result pipe to nonblocking mode"); 503 croak ("cannot set result pipe to nonblocking mode");
504
505 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
404} 506}
405 507
406void 508void
407min_parallel(nthreads) 509min_parallel(nthreads)
408 int nthreads 510 int nthreads
409 PROTOTYPE: $ 511 PROTOTYPE: $
410 CODE:
411 while (nthreads > started)
412 start_thread ();
413 512
414void 513void
415max_parallel(nthreads) 514max_parallel(nthreads)
416 int nthreads 515 int nthreads
417 PROTOTYPE: $ 516 PROTOTYPE: $
418 CODE:
419{
420 int cur = started;
421 while (cur > nthreads)
422 {
423 end_thread ();
424 cur--;
425 }
426
427 while (started > nthreads)
428 {
429 poll_wait ();
430 poll_cb ();
431 }
432}
433 517
434int 518int
435max_outstanding(nreqs) 519max_outstanding(nreqs)
436 int nreqs 520 int nreqs
437 PROTOTYPE: $ 521 PROTOTYPE: $
… …
446 int mode 530 int mode
447 SV * callback 531 SV * callback
448 PROTOTYPE: $$$;$ 532 PROTOTYPE: $$$;$
449 CODE: 533 CODE:
450{ 534{
451 aio_req req; 535 dREQ;
452
453 Newz (0, req, 1, aio_cb);
454
455 if (!req)
456 croak ("out of memory during aio_req allocation");
457 536
458 req->type = REQ_OPEN; 537 req->type = REQ_OPEN;
459 req->data = newSVsv (pathname); 538 req->data = newSVsv (pathname);
460 req->dataptr = SvPV_nolen (req->data); 539 req->dataptr = SvPVbyte_nolen (req->data);
461 req->fd = flags; 540 req->fd = flags;
462 req->mode = mode; 541 req->mode = mode;
463 req->callback = SvREFCNT_inc (callback);
464 542
465 send_req (req); 543 send_req (req);
466} 544}
467 545
468void 546void
… …
474 aio_close = REQ_CLOSE 552 aio_close = REQ_CLOSE
475 aio_fsync = REQ_FSYNC 553 aio_fsync = REQ_FSYNC
476 aio_fdatasync = REQ_FDATASYNC 554 aio_fdatasync = REQ_FDATASYNC
477 CODE: 555 CODE:
478{ 556{
479 aio_req req; 557 dREQ;
480
481 Newz (0, req, 1, aio_cb);
482
483 if (!req)
484 croak ("out of memory during aio_req allocation");
485 558
486 req->type = ix; 559 req->type = ix;
487 req->fh = newSVsv (fh); 560 req->fh = newSVsv (fh);
488 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 561 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
489 req->callback = SvREFCNT_inc (callback);
490 562
491 send_req (req); 563 send_req (req);
492} 564}
493 565
494void 566void
… …
505 PROTOTYPE: $$$$$;$ 577 PROTOTYPE: $$$$$;$
506 CODE: 578 CODE:
507{ 579{
508 aio_req req; 580 aio_req req;
509 STRLEN svlen; 581 STRLEN svlen;
510 char *svptr = SvPV (data, svlen); 582 char *svptr = SvPVbyte (data, svlen);
511 583
512 SvUPGRADE (data, SVt_PV); 584 SvUPGRADE (data, SVt_PV);
513 SvPOK_on (data); 585 SvPOK_on (data);
514 586
515 if (dataoffset < 0) 587 if (dataoffset < 0)
… …
531 } 603 }
532 604
533 if (length < 0) 605 if (length < 0)
534 croak ("length must not be negative"); 606 croak ("length must not be negative");
535 607
536 Newz (0, req, 1, aio_cb); 608 {
609 dREQ;
537 610
538 if (!req)
539 croak ("out of memory during aio_req allocation");
540
541 req->type = ix; 611 req->type = ix;
542 req->fh = newSVsv (fh); 612 req->fh = newSVsv (fh);
543 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 613 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
544 : IoOFP (sv_2io (fh))); 614 : IoOFP (sv_2io (fh)));
545 req->offset = offset; 615 req->offset = offset;
546 req->length = length; 616 req->length = length;
547 req->data = SvREFCNT_inc (data); 617 req->data = SvREFCNT_inc (data);
548 req->dataptr = (char *)svptr + dataoffset; 618 req->dataptr = (char *)svptr + dataoffset;
549 req->callback = SvREFCNT_inc (callback); 619 req->callback = SvREFCNT_inc (callback);
550 620
551 send_req (req); 621 send_req (req);
622 }
552} 623}
553 624
554void 625void
555aio_readahead(fh,offset,length,callback=&PL_sv_undef) 626aio_readahead(fh,offset,length,callback=&PL_sv_undef)
556 SV * fh 627 SV * fh
… …
558 IV length 629 IV length
559 SV * callback 630 SV * callback
560 PROTOTYPE: $$$;$ 631 PROTOTYPE: $$$;$
561 CODE: 632 CODE:
562{ 633{
563 aio_req req; 634 dREQ;
564
565 if (length < 0)
566 croak ("length must not be negative");
567
568 Newz (0, req, 1, aio_cb);
569
570 if (!req)
571 croak ("out of memory during aio_req allocation");
572 635
573 req->type = REQ_READAHEAD; 636 req->type = REQ_READAHEAD;
574 req->fh = newSVsv (fh); 637 req->fh = newSVsv (fh);
575 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 638 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
576 req->offset = offset; 639 req->offset = offset;
577 req->length = length; 640 req->length = length;
578 req->callback = SvREFCNT_inc (callback);
579 641
580 send_req (req); 642 send_req (req);
581} 643}
582 644
583void 645void
… …
587 ALIAS: 649 ALIAS:
588 aio_stat = REQ_STAT 650 aio_stat = REQ_STAT
589 aio_lstat = REQ_LSTAT 651 aio_lstat = REQ_LSTAT
590 CODE: 652 CODE:
591{ 653{
592 aio_req req; 654 dREQ;
593
594 Newz (0, req, 1, aio_cb);
595
596 if (!req)
597 croak ("out of memory during aio_req allocation");
598 655
599 New (0, req->statdata, 1, Stat_t); 656 New (0, req->statdata, 1, Stat_t);
600
601 if (!req->statdata) 657 if (!req->statdata)
602 croak ("out of memory during aio_req->statdata allocation"); 658 croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
603 659
604 if (SvPOK (fh_or_path)) 660 if (SvPOK (fh_or_path))
605 { 661 {
606 req->type = ix; 662 req->type = ix;
607 req->data = newSVsv (fh_or_path); 663 req->data = newSVsv (fh_or_path);
608 req->dataptr = SvPV_nolen (req->data); 664 req->dataptr = SvPVbyte_nolen (req->data);
609 } 665 }
610 else 666 else
611 { 667 {
612 req->type = REQ_FSTAT; 668 req->type = REQ_FSTAT;
613 req->fh = newSVsv (fh_or_path); 669 req->fh = newSVsv (fh_or_path);
614 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 670 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
615 } 671 }
616 672
617 req->callback = SvREFCNT_inc (callback);
618
619 send_req (req); 673 send_req (req);
620} 674}
621 675
622void 676void
623aio_unlink(pathname,callback=&PL_sv_undef) 677aio_unlink(pathname,callback=&PL_sv_undef)
624 SV * pathname 678 SV * pathname
625 SV * callback 679 SV * callback
680 ALIAS:
681 aio_unlink = REQ_UNLINK
682 aio_rmdir = REQ_RMDIR
626 CODE: 683 CODE:
627{ 684{
628 aio_req req; 685 dREQ;
629 686
630 Newz (0, req, 1, aio_cb); 687 req->type = ix;
688 req->data = newSVsv (pathname);
689 req->dataptr = SvPVbyte_nolen (req->data);
631 690
632 if (!req) 691 send_req (req);
633 croak ("out of memory during aio_req allocation"); 692}
693
694void
695aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
696 SV * oldpath
697 SV * newpath
698 SV * callback
699 CODE:
700{
701 dREQ;
634 702
635 req->type = REQ_UNLINK; 703 req->type = REQ_SYMLINK;
704 req->fh = newSVsv (oldpath);
705 req->data2ptr = SvPVbyte_nolen (req->fh);
636 req->data = newSVsv (pathname); 706 req->data = newSVsv (newpath);
637 req->dataptr = SvPV_nolen (req->data); 707 req->dataptr = SvPVbyte_nolen (req->data);
638 req->callback = SvREFCNT_inc (callback);
639 708
640 send_req (req); 709 send_req (req);
641} 710}
642 711
643void 712void

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