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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.18 by root, Sun Jul 31 19:00:31 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"
… …
9 12
10#include <unistd.h> 13#include <unistd.h>
11#include <fcntl.h> 14#include <fcntl.h>
12#include <signal.h> 15#include <signal.h>
13#include <sched.h> 16#include <sched.h>
14
15#ifndef _REENTRANT
16# define _REENTRANT 1
17#endif
18#include <errno.h>
19 17
20#include <pthread.h> 18#include <pthread.h>
21 19
22typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */
23typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
… …
31 29
32enum { 30enum {
33 REQ_QUIT, 31 REQ_QUIT,
34 REQ_OPEN, REQ_CLOSE, 32 REQ_OPEN, REQ_CLOSE,
35 REQ_READ, REQ_WRITE, REQ_READAHEAD, 33 REQ_READ, REQ_WRITE, REQ_READAHEAD,
36 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 34 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
37 REQ_FSYNC, REQ_FDATASYNC, 35 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR,
37 REQ_SYMLINK,
38}; 38};
39 39
40typedef struct aio_cb { 40typedef struct aio_cb {
41 struct aio_cb *volatile next; 41 struct aio_cb *volatile next;
42 42
… …
47 size_t length; 47 size_t length;
48 ssize_t result; 48 ssize_t result;
49 mode_t mode; /* open */ 49 mode_t mode; /* open */
50 int errorno; 50 int errorno;
51 SV *data, *callback, *fh; 51 SV *data, *callback, *fh;
52 void *dataptr; 52 void *dataptr, *data2ptr;
53 STRLEN dataoffset; 53 STRLEN dataoffset;
54 54
55 Stat_t *statdata; 55 Stat_t *statdata;
56} aio_cb; 56} aio_cb;
57 57
… …
62static int max_outstanding = 1<<30; 62static int max_outstanding = 1<<30;
63static int respipe [2]; 63static int respipe [2];
64 64
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 68static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68 69
69static volatile aio_req reqs, reqe; /* queue start, queue end */ 70static volatile aio_req reqs, reqe; /* queue start, queue end */
70static volatile aio_req ress, rese; /* queue start, queue end */ 71static volatile aio_req ress, rese; /* queue start, queue end */
71 72
… …
85static int 86static int
86poll_cb () 87poll_cb ()
87{ 88{
88 dSP; 89 dSP;
89 int count = 0; 90 int count = 0;
91 int do_croak = 0;
90 aio_req req, prv; 92 aio_req req, prv;
91 93
92 pthread_mutex_lock (&reslock); 94 pthread_mutex_lock (&reslock);
93 95
94 { 96 {
95 /* read any signals sent by the worker threads */ 97 /* read any signals sent by the worker threads */
96 char buf [32]; 98 char buf [32];
97 while (read (respipe [0], buf, 32) > 0) 99 while (read (respipe [0], buf, 32) == 32)
98 ; 100 ;
99 } 101 }
100 102
101 req = ress; 103 req = ress;
102 ress = rese = 0; 104 ress = rese = 0;
… …
157 PUTBACK; 159 PUTBACK;
158 call_sv (req->callback, G_VOID | G_EVAL); 160 call_sv (req->callback, G_VOID | G_EVAL);
159 SPAGAIN; 161 SPAGAIN;
160 } 162 }
161 163
164 do_croak = SvTRUE (ERRSV);
165
162 LEAVE; 166 LEAVE;
163 167
164 if (req->callback) 168 if (req->callback)
165 SvREFCNT_dec (req->callback); 169 SvREFCNT_dec (req->callback);
166 170
… …
170 174
171 prv = req; 175 prv = req;
172 req = req->next; 176 req = req->next;
173 Safefree (prv); 177 Safefree (prv);
174 178
175 /* TODO: croak on errors? */ 179 if (do_croak)
180 croak (0);
176 } 181 }
177 182
178 return count; 183 return count;
179} 184}
180 185
… …
235 req->type = REQ_QUIT; 240 req->type = REQ_QUIT;
236 241
237 send_req (req); 242 send_req (req);
238} 243}
239 244
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/*****************************************************************************/
240/* work around various missing functions */ 316/* work around various missing functions */
241 317
242#if !HAVE_PREADWRITE 318#if !HAVE_PREADWRITE
243# define pread aio_pread 319# define pread aio_pread
244# define pwrite aio_pwrite 320# define pwrite aio_pwrite
… …
306 382
307 errno = 0; 383 errno = 0;
308} 384}
309#endif 385#endif
310 386
387/*****************************************************************************/
388
311static void * 389static void *
312aio_proc (void *thr_arg) 390aio_proc (void *thr_arg)
313{ 391{
314 aio_req req; 392 aio_req req;
315 int type; 393 int type;
… …
352 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 430 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353 431
354 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;
355 case REQ_CLOSE: req->result = close (req->fd); break; 433 case REQ_CLOSE: req->result = close (req->fd); break;
356 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;
357 437
358 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 438 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359 case REQ_FSYNC: req->result = fsync (req->fd); break; 439 case REQ_FSYNC: req->result = fsync (req->fd); break;
360 440
361 case REQ_QUIT: 441 case REQ_QUIT:
… …
390 while (type != REQ_QUIT); 470 while (type != REQ_QUIT);
391 471
392 return 0; 472 return 0;
393} 473}
394 474
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
395MODULE = IO::AIO PACKAGE = IO::AIO 487MODULE = IO::AIO PACKAGE = IO::AIO
396 488
397PROTOTYPES: ENABLE 489PROTOTYPES: ENABLE
398 490
399BOOT: 491BOOT:
… …
404 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 496 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
405 croak ("cannot set result pipe to nonblocking mode"); 497 croak ("cannot set result pipe to nonblocking mode");
406 498
407 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 499 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
408 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);
409} 503}
410 504
411void 505void
412min_parallel(nthreads) 506min_parallel(nthreads)
413 int nthreads 507 int nthreads
414 PROTOTYPE: $ 508 PROTOTYPE: $
415 CODE:
416 while (nthreads > started)
417 start_thread ();
418 509
419void 510void
420max_parallel(nthreads) 511max_parallel(nthreads)
421 int nthreads 512 int nthreads
422 PROTOTYPE: $ 513 PROTOTYPE: $
423 CODE:
424{
425 int cur = started;
426 while (cur > nthreads)
427 {
428 end_thread ();
429 cur--;
430 }
431
432 while (started > nthreads)
433 {
434 poll_wait ();
435 poll_cb ();
436 }
437}
438 514
439int 515int
440max_outstanding(nreqs) 516max_outstanding(nreqs)
441 int nreqs 517 int nreqs
442 PROTOTYPE: $ 518 PROTOTYPE: $
… …
451 int mode 527 int mode
452 SV * callback 528 SV * callback
453 PROTOTYPE: $$$;$ 529 PROTOTYPE: $$$;$
454 CODE: 530 CODE:
455{ 531{
456 aio_req req; 532 dREQ;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462 533
463 req->type = REQ_OPEN; 534 req->type = REQ_OPEN;
464 req->data = newSVsv (pathname); 535 req->data = newSVsv (pathname);
465 req->dataptr = SvPV_nolen (req->data); 536 req->dataptr = SvPVbyte_nolen (req->data);
466 req->fd = flags; 537 req->fd = flags;
467 req->mode = mode; 538 req->mode = mode;
468 req->callback = SvREFCNT_inc (callback);
469 539
470 send_req (req); 540 send_req (req);
471} 541}
472 542
473void 543void
… …
479 aio_close = REQ_CLOSE 549 aio_close = REQ_CLOSE
480 aio_fsync = REQ_FSYNC 550 aio_fsync = REQ_FSYNC
481 aio_fdatasync = REQ_FDATASYNC 551 aio_fdatasync = REQ_FDATASYNC
482 CODE: 552 CODE:
483{ 553{
484 aio_req req; 554 dREQ;
485
486 Newz (0, req, 1, aio_cb);
487
488 if (!req)
489 croak ("out of memory during aio_req allocation");
490 555
491 req->type = ix; 556 req->type = ix;
492 req->fh = newSVsv (fh); 557 req->fh = newSVsv (fh);
493 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 558 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494 req->callback = SvREFCNT_inc (callback);
495 559
496 send_req (req); 560 send_req (req);
497} 561}
498 562
499void 563void
… …
510 PROTOTYPE: $$$$$;$ 574 PROTOTYPE: $$$$$;$
511 CODE: 575 CODE:
512{ 576{
513 aio_req req; 577 aio_req req;
514 STRLEN svlen; 578 STRLEN svlen;
515 char *svptr = SvPV (data, svlen); 579 char *svptr = SvPVbyte (data, svlen);
516 580
517 SvUPGRADE (data, SVt_PV); 581 SvUPGRADE (data, SVt_PV);
518 SvPOK_on (data); 582 SvPOK_on (data);
519 583
520 if (dataoffset < 0) 584 if (dataoffset < 0)
… …
536 } 600 }
537 601
538 if (length < 0) 602 if (length < 0)
539 croak ("length must not be negative"); 603 croak ("length must not be negative");
540 604
541 Newz (0, req, 1, aio_cb); 605 {
606 dREQ;
542 607
543 if (!req)
544 croak ("out of memory during aio_req allocation");
545
546 req->type = ix; 608 req->type = ix;
547 req->fh = newSVsv (fh); 609 req->fh = newSVsv (fh);
548 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 610 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549 : IoOFP (sv_2io (fh))); 611 : IoOFP (sv_2io (fh)));
550 req->offset = offset; 612 req->offset = offset;
551 req->length = length; 613 req->length = length;
552 req->data = SvREFCNT_inc (data); 614 req->data = SvREFCNT_inc (data);
553 req->dataptr = (char *)svptr + dataoffset; 615 req->dataptr = (char *)svptr + dataoffset;
554 req->callback = SvREFCNT_inc (callback); 616 req->callback = SvREFCNT_inc (callback);
555 617
556 send_req (req); 618 send_req (req);
619 }
557} 620}
558 621
559void 622void
560aio_readahead(fh,offset,length,callback=&PL_sv_undef) 623aio_readahead(fh,offset,length,callback=&PL_sv_undef)
561 SV * fh 624 SV * fh
… …
563 IV length 626 IV length
564 SV * callback 627 SV * callback
565 PROTOTYPE: $$$;$ 628 PROTOTYPE: $$$;$
566 CODE: 629 CODE:
567{ 630{
568 aio_req req; 631 dREQ;
569
570 if (length < 0)
571 croak ("length must not be negative");
572
573 Newz (0, req, 1, aio_cb);
574
575 if (!req)
576 croak ("out of memory during aio_req allocation");
577 632
578 req->type = REQ_READAHEAD; 633 req->type = REQ_READAHEAD;
579 req->fh = newSVsv (fh); 634 req->fh = newSVsv (fh);
580 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 635 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581 req->offset = offset; 636 req->offset = offset;
582 req->length = length; 637 req->length = length;
583 req->callback = SvREFCNT_inc (callback);
584 638
585 send_req (req); 639 send_req (req);
586} 640}
587 641
588void 642void
… …
592 ALIAS: 646 ALIAS:
593 aio_stat = REQ_STAT 647 aio_stat = REQ_STAT
594 aio_lstat = REQ_LSTAT 648 aio_lstat = REQ_LSTAT
595 CODE: 649 CODE:
596{ 650{
597 aio_req req; 651 dREQ;
598
599 Newz (0, req, 1, aio_cb);
600
601 if (!req)
602 croak ("out of memory during aio_req allocation");
603 652
604 New (0, req->statdata, 1, Stat_t); 653 New (0, req->statdata, 1, Stat_t);
605
606 if (!req->statdata) 654 if (!req->statdata)
607 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)");
608 656
609 if (SvPOK (fh_or_path)) 657 if (SvPOK (fh_or_path))
610 { 658 {
611 req->type = ix; 659 req->type = ix;
612 req->data = newSVsv (fh_or_path); 660 req->data = newSVsv (fh_or_path);
613 req->dataptr = SvPV_nolen (req->data); 661 req->dataptr = SvPVbyte_nolen (req->data);
614 } 662 }
615 else 663 else
616 { 664 {
617 req->type = REQ_FSTAT; 665 req->type = REQ_FSTAT;
618 req->fh = newSVsv (fh_or_path); 666 req->fh = newSVsv (fh_or_path);
619 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 667 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620 } 668 }
621 669
622 req->callback = SvREFCNT_inc (callback);
623
624 send_req (req); 670 send_req (req);
625} 671}
626 672
627void 673void
628aio_unlink(pathname,callback=&PL_sv_undef) 674aio_unlink(pathname,callback=&PL_sv_undef)
629 SV * pathname 675 SV * pathname
630 SV * callback 676 SV * callback
677 ALIAS:
678 aio_unlink = REQ_UNLINK
679 aio_rmdir = REQ_RMDIR
631 CODE: 680 CODE:
632{ 681{
633 aio_req req; 682 dREQ;
634 683
635 Newz (0, req, 1, aio_cb); 684 req->type = ix;
685 req->data = newSVsv (pathname);
686 req->dataptr = SvPVbyte_nolen (req->data);
636 687
637 if (!req) 688 send_req (req);
638 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;
639 699
640 req->type = REQ_UNLINK; 700 req->type = REQ_SYMLINK;
701 req->fh = newSVsv (oldpath);
702 req->data2ptr = SvPVbyte_nolen (req->fh);
641 req->data = newSVsv (pathname); 703 req->data = newSVsv (newpath);
642 req->dataptr = SvPV_nolen (req->data); 704 req->dataptr = SvPVbyte_nolen (req->data);
643 req->callback = SvREFCNT_inc (callback);
644 705
645 send_req (req); 706 send_req (req);
646} 707}
647 708
648void 709void

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