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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 1.25 by root, Wed Aug 17 03:16:56 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 int nstarted;
273
274 for (;;) {
275 while (nreqs)
276 {
277 poll_wait ();
278 poll_cb ();
279 }
280
281 nstarted = started;
282 max_parallel (0);
283
284 pthread_mutex_lock (&reqlock);
285
286 if (!nreqs && !started)
287 break;
288
289 pthread_mutex_unlock (&reqlock);
290
291 min_parallel (fork_started);
292 }
293
294 pthread_mutex_lock (&frklock);
295 fork_started = nstarted;
296 pthread_mutex_lock (&reslock);
297
298 assert (!started);
299 assert (!nreqs);
300 assert (!reqs && !reqe);
301 assert (!ress && !rese);
302}
303
304static void atfork_parent (void)
305{
306 pthread_mutex_unlock (&reslock);
307 pthread_mutex_unlock (&frklock);
308 pthread_mutex_unlock (&reqlock);
309
310 min_parallel (fork_started);
311}
312
313#define atfork_child atfork_parent
314
315/*****************************************************************************/
235/* work around various missing functions */ 316/* work around various missing functions */
236 317
237#if !HAVE_PREADWRITE 318#if !HAVE_PREADWRITE
238# define pread aio_pread 319# define pread aio_pread
239# define pwrite aio_pwrite 320# define pwrite aio_pwrite
… …
301 382
302 errno = 0; 383 errno = 0;
303} 384}
304#endif 385#endif
305 386
387/*****************************************************************************/
388
306static void * 389static void *
307aio_proc (void *thr_arg) 390aio_proc (void *thr_arg)
308{ 391{
309 aio_req req; 392 aio_req req;
310 int type; 393 int type;
… …
347 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 430 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
348 431
349 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 432 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
350 case REQ_CLOSE: req->result = close (req->fd); break; 433 case REQ_CLOSE: req->result = close (req->fd); break;
351 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 434 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
435 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
436 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
352 437
353 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 438 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
354 case REQ_FSYNC: req->result = fsync (req->fd); break; 439 case REQ_FSYNC: req->result = fsync (req->fd); break;
355 440
356 case REQ_QUIT: 441 case REQ_QUIT:
… …
385 while (type != REQ_QUIT); 470 while (type != REQ_QUIT);
386 471
387 return 0; 472 return 0;
388} 473}
389 474
475#define dREQ \
476 aio_req req; \
477 \
478 if (SvOK (callback) && !SvROK (callback)) \
479 croak ("clalback must be undef or of reference type"); \
480 \
481 Newz (0, req, 1, aio_cb); \
482 if (!req) \
483 croak ("out of memory during aio_req allocation"); \
484 \
485 req->callback = SvREFCNT_inc (callback);
486
390MODULE = IO::AIO PACKAGE = IO::AIO 487MODULE = IO::AIO PACKAGE = IO::AIO
391 488
392PROTOTYPES: ENABLE 489PROTOTYPES: ENABLE
393 490
394BOOT: 491BOOT:
… …
399 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 496 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
400 croak ("cannot set result pipe to nonblocking mode"); 497 croak ("cannot set result pipe to nonblocking mode");
401 498
402 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 499 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
403 croak ("cannot set result pipe to nonblocking mode"); 500 croak ("cannot set result pipe to nonblocking mode");
501
502 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
404} 503}
405 504
406void 505void
407min_parallel(nthreads) 506min_parallel(nthreads)
408 int nthreads 507 int nthreads
409 PROTOTYPE: $ 508 PROTOTYPE: $
410 CODE:
411 while (nthreads > started)
412 start_thread ();
413 509
414void 510void
415max_parallel(nthreads) 511max_parallel(nthreads)
416 int nthreads 512 int nthreads
417 PROTOTYPE: $ 513 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}
433 514
434int 515int
435max_outstanding(nreqs) 516max_outstanding(nreqs)
436 int nreqs 517 int nreqs
437 PROTOTYPE: $ 518 PROTOTYPE: $
… …
446 int mode 527 int mode
447 SV * callback 528 SV * callback
448 PROTOTYPE: $$$;$ 529 PROTOTYPE: $$$;$
449 CODE: 530 CODE:
450{ 531{
451 aio_req req; 532 dREQ;
452
453 Newz (0, req, 1, aio_cb);
454
455 if (!req)
456 croak ("out of memory during aio_req allocation");
457 533
458 req->type = REQ_OPEN; 534 req->type = REQ_OPEN;
459 req->data = newSVsv (pathname); 535 req->data = newSVsv (pathname);
460 req->dataptr = SvPV_nolen (req->data); 536 req->dataptr = SvPVbyte_nolen (req->data);
461 req->fd = flags; 537 req->fd = flags;
462 req->mode = mode; 538 req->mode = mode;
463 req->callback = SvREFCNT_inc (callback);
464 539
465 send_req (req); 540 send_req (req);
466} 541}
467 542
468void 543void
… …
474 aio_close = REQ_CLOSE 549 aio_close = REQ_CLOSE
475 aio_fsync = REQ_FSYNC 550 aio_fsync = REQ_FSYNC
476 aio_fdatasync = REQ_FDATASYNC 551 aio_fdatasync = REQ_FDATASYNC
477 CODE: 552 CODE:
478{ 553{
479 aio_req req; 554 dREQ;
480
481 Newz (0, req, 1, aio_cb);
482
483 if (!req)
484 croak ("out of memory during aio_req allocation");
485 555
486 req->type = ix; 556 req->type = ix;
487 req->fh = newSVsv (fh); 557 req->fh = newSVsv (fh);
488 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 558 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
489 req->callback = SvREFCNT_inc (callback);
490 559
491 send_req (req); 560 send_req (req);
492} 561}
493 562
494void 563void
… …
505 PROTOTYPE: $$$$$;$ 574 PROTOTYPE: $$$$$;$
506 CODE: 575 CODE:
507{ 576{
508 aio_req req; 577 aio_req req;
509 STRLEN svlen; 578 STRLEN svlen;
510 char *svptr = SvPV (data, svlen); 579 char *svptr = SvPVbyte (data, svlen);
511 580
512 SvUPGRADE (data, SVt_PV); 581 SvUPGRADE (data, SVt_PV);
513 SvPOK_on (data); 582 SvPOK_on (data);
514 583
515 if (dataoffset < 0) 584 if (dataoffset < 0)
… …
531 } 600 }
532 601
533 if (length < 0) 602 if (length < 0)
534 croak ("length must not be negative"); 603 croak ("length must not be negative");
535 604
536 Newz (0, req, 1, aio_cb); 605 {
606 dREQ;
537 607
538 if (!req)
539 croak ("out of memory during aio_req allocation");
540
541 req->type = ix; 608 req->type = ix;
542 req->fh = newSVsv (fh); 609 req->fh = newSVsv (fh);
543 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 610 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
544 : IoOFP (sv_2io (fh))); 611 : IoOFP (sv_2io (fh)));
545 req->offset = offset; 612 req->offset = offset;
546 req->length = length; 613 req->length = length;
547 req->data = SvREFCNT_inc (data); 614 req->data = SvREFCNT_inc (data);
548 req->dataptr = (char *)svptr + dataoffset; 615 req->dataptr = (char *)svptr + dataoffset;
549 req->callback = SvREFCNT_inc (callback); 616 req->callback = SvREFCNT_inc (callback);
550 617
551 send_req (req); 618 send_req (req);
619 }
552} 620}
553 621
554void 622void
555aio_readahead(fh,offset,length,callback=&PL_sv_undef) 623aio_readahead(fh,offset,length,callback=&PL_sv_undef)
556 SV * fh 624 SV * fh
… …
558 IV length 626 IV length
559 SV * callback 627 SV * callback
560 PROTOTYPE: $$$;$ 628 PROTOTYPE: $$$;$
561 CODE: 629 CODE:
562{ 630{
563 aio_req req; 631 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");
572 632
573 req->type = REQ_READAHEAD; 633 req->type = REQ_READAHEAD;
574 req->fh = newSVsv (fh); 634 req->fh = newSVsv (fh);
575 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 635 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
576 req->offset = offset; 636 req->offset = offset;
577 req->length = length; 637 req->length = length;
578 req->callback = SvREFCNT_inc (callback);
579 638
580 send_req (req); 639 send_req (req);
581} 640}
582 641
583void 642void
… …
587 ALIAS: 646 ALIAS:
588 aio_stat = REQ_STAT 647 aio_stat = REQ_STAT
589 aio_lstat = REQ_LSTAT 648 aio_lstat = REQ_LSTAT
590 CODE: 649 CODE:
591{ 650{
592 aio_req req; 651 dREQ;
593
594 Newz (0, req, 1, aio_cb);
595
596 if (!req)
597 croak ("out of memory during aio_req allocation");
598 652
599 New (0, req->statdata, 1, Stat_t); 653 New (0, req->statdata, 1, Stat_t);
600
601 if (!req->statdata) 654 if (!req->statdata)
602 croak ("out of memory during aio_req->statdata allocation"); 655 croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)");
603 656
604 if (SvPOK (fh_or_path)) 657 if (SvPOK (fh_or_path))
605 { 658 {
606 req->type = ix; 659 req->type = ix;
607 req->data = newSVsv (fh_or_path); 660 req->data = newSVsv (fh_or_path);
608 req->dataptr = SvPV_nolen (req->data); 661 req->dataptr = SvPVbyte_nolen (req->data);
609 } 662 }
610 else 663 else
611 { 664 {
612 req->type = REQ_FSTAT; 665 req->type = REQ_FSTAT;
613 req->fh = newSVsv (fh_or_path); 666 req->fh = newSVsv (fh_or_path);
614 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 667 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
615 } 668 }
616 669
617 req->callback = SvREFCNT_inc (callback);
618
619 send_req (req); 670 send_req (req);
620} 671}
621 672
622void 673void
623aio_unlink(pathname,callback=&PL_sv_undef) 674aio_unlink(pathname,callback=&PL_sv_undef)
624 SV * pathname 675 SV * pathname
625 SV * callback 676 SV * callback
677 ALIAS:
678 aio_unlink = REQ_UNLINK
679 aio_rmdir = REQ_RMDIR
626 CODE: 680 CODE:
627{ 681{
628 aio_req req; 682 dREQ;
629 683
630 Newz (0, req, 1, aio_cb); 684 req->type = ix;
685 req->data = newSVsv (pathname);
686 req->dataptr = SvPVbyte_nolen (req->data);
631 687
632 if (!req) 688 send_req (req);
633 croak ("out of memory during aio_req allocation"); 689}
690
691void
692aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
693 SV * oldpath
694 SV * newpath
695 SV * callback
696 CODE:
697{
698 dREQ;
634 699
635 req->type = REQ_UNLINK; 700 req->type = REQ_SYMLINK;
701 req->fh = newSVsv (oldpath);
702 req->data2ptr = SvPVbyte_nolen (req->fh);
636 req->data = newSVsv (pathname); 703 req->data = newSVsv (newpath);
637 req->dataptr = SvPV_nolen (req->data); 704 req->dataptr = SvPVbyte_nolen (req->data);
638 req->callback = SvREFCNT_inc (callback);
639 705
640 send_req (req); 706 send_req (req);
641} 707}
642 708
643void 709void

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