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/cvs/IO-AIO/AIO.xs
Revision: 1.139
Committed: Tue Apr 21 20:12:56 2009 UTC (15 years, 1 month ago) by root
Branch: MAIN
Changes since 1.138: +0 -3 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 #include "libeio/xthread.h"
2
3 #include <errno.h>
4
5 #include "EXTERN.h"
6 #include "perl.h"
7 #include "XSUB.h"
8
9 #include <stddef.h>
10 #include <stdlib.h>
11 #include <errno.h>
12 #include <sys/types.h>
13 #include <sys/stat.h>
14 #include <limits.h>
15 #include <fcntl.h>
16 #include <sched.h>
17
18 /* perl namespace pollution */
19 #undef VERSION
20
21 #ifdef _WIN32
22
23 # define EIO_STRUCT_DIRENT Direntry_t
24 # undef malloc
25 # undef free
26
27 // perl overrides all those nice win32 functions
28 # undef open
29 # undef read
30 # undef write
31 # undef send
32 # undef recv
33 # undef stat
34 # undef fstat
35 # define lstat stat
36 # undef truncate
37 # undef ftruncate
38 # undef open
39 # undef close
40 # undef unlink
41 # undef rmdir
42 # undef rename
43 # undef lseek
44
45 # define chown(a,b,c) (errno = ENOSYS, -1)
46 # define fchown(a,b,c) (errno = ENOSYS, -1)
47 # define fchmod(a,b) (errno = ENOSYS, -1)
48 # define symlink(a,b) (errno = ENOSYS, -1)
49 # define readlink(a,b,c) (errno = ENOSYS, -1)
50 # define mknod(a,b,c) (errno = ENOSYS, -1)
51 # define truncate(a,b) (errno = ENOSYS, -1)
52 # define ftruncate(fd,o) chsize ((fd), (o))
53 # define fsync(fd) _commit (fd)
54 # define opendir(fd) (errno = ENOSYS, 0)
55 # define readdir(fd) (errno = ENOSYS, -1)
56 # define closedir(fd) (errno = ENOSYS, -1)
57 # define mkdir(a,b) mkdir (a)
58
59 #else
60
61 # include <sys/time.h>
62 # include <sys/select.h>
63 # include <unistd.h>
64 # include <utime.h>
65 # include <signal.h>
66 # define EIO_STRUCT_DIRENT struct dirent
67
68 #endif
69
70 /* perl stupidly overrides readdir and maybe others */
71 /* with thread-unsafe versions, imagine that :( */
72 #undef readdir
73 #undef opendir
74 #undef closedir
75
76 #define EIO_STRUCT_STAT Stat_t
77
78 /* use NV for 32 bit perls as it allows larger offsets */
79 #if IVSIZE >= 8
80 # define SvVAL64 SvIV
81 #else
82 # define SvVAL64 SvNV
83 #endif
84
85 /*****************************************************************************/
86
87 #if __GNUC__ >= 3
88 # define expect(expr,value) __builtin_expect ((expr),(value))
89 #else
90 # define expect(expr,value) (expr)
91 #endif
92
93 #define expect_false(expr) expect ((expr) != 0, 0)
94 #define expect_true(expr) expect ((expr) != 0, 1)
95
96 /*****************************************************************************/
97
98 static HV *stash;
99 typedef SV SV8; /* byte-sv, used for argument-checking */
100
101 #define AIO_REQ_KLASS "IO::AIO::REQ"
102 #define AIO_GRP_KLASS "IO::AIO::GRP"
103
104 #define EIO_REQ_MEMBERS \
105 SV *callback; \
106 SV *sv1, *sv2; \
107 STRLEN stroffset; \
108 SV *self;
109
110 #define EIO_NO_WRAPPERS 1
111
112 #include "libeio/eio.h"
113
114 static int req_invoke (eio_req *req);
115 #define EIO_FINISH(req) req_invoke (req)
116 static void req_destroy (eio_req *grp);
117 #define EIO_DESTROY(req) req_destroy (req)
118
119 enum {
120 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121 };
122
123 #include "libeio/eio.c"
124
125 typedef eio_req *aio_req;
126 typedef eio_req *aio_req_ornot;
127
128 static SV *on_next_submit;
129 static int next_pri = EIO_PRI_DEFAULT;
130 static int max_outstanding;
131
132 static int respipe_osf [2], respipe [2] = { -1, -1 };
133
134 static void req_destroy (aio_req req);
135 static void req_cancel (aio_req req);
136
137 static void want_poll (void)
138 {
139 /* write a dummy byte to the pipe so fh becomes ready */
140 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
141 }
142
143 static void done_poll (void)
144 {
145 /* read any signals sent by the worker threads */
146 char buf [4];
147 while (respipe_read (respipe [0], buf, 4) == 4)
148 ;
149 }
150
151 /* must be called at most once */
152 static SV *req_sv (aio_req req, const char *klass)
153 {
154 if (!req->self)
155 {
156 req->self = (SV *)newHV ();
157 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
158 }
159
160 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
161 }
162
163 static aio_req SvAIO_REQ (SV *sv)
164 {
165 MAGIC *mg;
166
167 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
168 croak ("object of class " AIO_REQ_KLASS " expected");
169
170 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
171
172 return mg ? (aio_req)mg->mg_ptr : 0;
173 }
174
175 static void aio_grp_feed (aio_req grp)
176 {
177 if (grp->sv2 && SvOK (grp->sv2))
178 {
179 dSP;
180
181 ENTER;
182 SAVETMPS;
183 PUSHMARK (SP);
184 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185 PUTBACK;
186 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187 SPAGAIN;
188 FREETMPS;
189 LEAVE;
190 }
191 }
192
193 static void req_submit (eio_req *req)
194 {
195 eio_submit (req);
196
197 if (expect_false (on_next_submit))
198 {
199 dSP;
200 SV *cb = sv_2mortal (on_next_submit);
201
202 on_next_submit = 0;
203
204 PUSHMARK (SP);
205 PUTBACK;
206 call_sv (cb, G_DISCARD | G_EVAL);
207 }
208 }
209
210 static int req_invoke (eio_req *req)
211 {
212 dSP;
213
214 if (req->flags & FLAG_SV2_RO_OFF)
215 SvREADONLY_off (req->sv2);
216
217 if (!EIO_CANCELLED (req) && req->callback)
218 {
219 ENTER;
220 SAVETMPS;
221 PUSHMARK (SP);
222 EXTEND (SP, 1);
223
224 switch (req->type)
225 {
226 case EIO_READDIR:
227 {
228 SV *rv = &PL_sv_undef;
229
230 if (req->result >= 0)
231 {
232 int i;
233 char *buf = req->ptr2;
234 AV *av = newAV ();
235
236 av_extend (av, req->result - 1);
237
238 for (i = 0; i < req->result; ++i)
239 {
240 SV *sv = newSVpv (buf, 0);
241
242 av_store (av, i, sv);
243 buf += SvCUR (sv) + 1;
244 }
245
246 rv = sv_2mortal (newRV_noinc ((SV *)av));
247 }
248
249 PUSHs (rv);
250 }
251 break;
252
253 case EIO_OPEN:
254 {
255 /* convert fd to fh */
256 SV *fh = &PL_sv_undef;
257
258 if (req->result >= 0)
259 {
260 GV *gv = (GV *)sv_newmortal ();
261 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
262 char sym [64];
263 int symlen;
264
265 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
266 gv_init (gv, stash, sym, symlen, 0);
267
268 symlen = snprintf (
269 sym,
270 sizeof (sym),
271 "%s&=%d",
272 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
273 req->result
274 );
275
276 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
277 fh = (SV *)gv;
278 }
279
280 PUSHs (fh);
281 }
282 break;
283
284 case EIO_GROUP:
285 req->int1 = 2; /* mark group as finished */
286
287 if (req->sv1)
288 {
289 int i;
290 AV *av = (AV *)req->sv1;
291
292 EXTEND (SP, AvFILL (av) + 1);
293 for (i = 0; i <= AvFILL (av); ++i)
294 PUSHs (*av_fetch (av, i, 0));
295 }
296 break;
297
298 case EIO_NOP:
299 case EIO_BUSY:
300 break;
301
302 case EIO_READLINK:
303 if (req->result > 0)
304 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
305 break;
306
307 case EIO_STAT:
308 case EIO_LSTAT:
309 case EIO_FSTAT:
310 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
311 PL_laststatval = req->result;
312 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
313 PUSHs (sv_2mortal (newSViv (req->result)));
314 break;
315
316 case EIO_READ:
317 {
318 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
319 *SvEND (req->sv2) = 0;
320 SvPOK_only (req->sv2);
321 SvSETMAGIC (req->sv2);
322 PUSHs (sv_2mortal (newSViv (req->result)));
323 }
324 break;
325
326 case EIO_DUP2:
327 if (req->result > 0)
328 req->result = 0;
329 /* FALLTHROUGH */
330
331 default:
332 PUSHs (sv_2mortal (newSViv (req->result)));
333 break;
334 }
335
336 errno = req->errorno;
337
338 PUTBACK;
339 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
340 SPAGAIN;
341
342 FREETMPS;
343 LEAVE;
344
345 PUTBACK;
346 }
347
348 return !!SvTRUE (ERRSV);
349 }
350
351 static void req_destroy (aio_req req)
352 {
353 if (req->self)
354 {
355 sv_unmagic (req->self, PERL_MAGIC_ext);
356 SvREFCNT_dec (req->self);
357 }
358
359 SvREFCNT_dec (req->sv1);
360 SvREFCNT_dec (req->sv2);
361 SvREFCNT_dec (req->callback);
362
363 Safefree (req);
364 }
365
366 static void req_cancel_subs (aio_req grp)
367 {
368 aio_req sub;
369
370 if (grp->type != EIO_GROUP)
371 return;
372
373 SvREFCNT_dec (grp->sv2);
374 grp->sv2 = 0;
375
376 eio_grp_cancel (grp);
377 }
378
379 #ifdef USE_SOCKETS_AS_HANDLES
380 # define TO_SOCKET(x) (win32_get_osfhandle (x))
381 #else
382 # define TO_SOCKET(x) (x)
383 #endif
384
385 static void
386 create_respipe (void)
387 {
388 int old_readfd = respipe [0];
389
390 if (respipe [1] >= 0)
391 respipe_close (TO_SOCKET (respipe [1]));
392
393 #ifdef _WIN32
394 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
395 #else
396 if (pipe (respipe))
397 #endif
398 croak ("unable to initialize result pipe");
399
400 if (old_readfd >= 0)
401 {
402 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
403 croak ("unable to initialize result pipe(2)");
404
405 respipe_close (respipe [0]);
406 respipe [0] = old_readfd;
407 }
408
409 #ifdef _WIN32
410 int arg = 1;
411 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
412 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
413 #else
414 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
415 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
416 #endif
417 croak ("unable to initialize result pipe(3)");
418
419 respipe_osf [0] = TO_SOCKET (respipe [0]);
420 respipe_osf [1] = TO_SOCKET (respipe [1]);
421 }
422
423 static void poll_wait (void)
424 {
425 fd_set rfd;
426
427 while (eio_nreqs ())
428 {
429 int size;
430
431 X_LOCK (reslock);
432 size = res_queue.size;
433 X_UNLOCK (reslock);
434
435 if (size)
436 return;
437
438 etp_maybe_start_thread ();
439
440 FD_ZERO (&rfd);
441 FD_SET (respipe [0], &rfd);
442
443 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
444 }
445 }
446
447 static int poll_cb (void)
448 {
449 for (;;)
450 {
451 int res = eio_poll ();
452
453 if (res > 0)
454 croak (0);
455
456 if (!max_outstanding || max_outstanding > eio_nreqs ())
457 return res;
458
459 poll_wait ();
460 }
461 }
462
463 static void atfork_child (void)
464 {
465 create_respipe ();
466 }
467
468 static SV *
469 get_cb (SV *cb_sv)
470 {
471 HV *st;
472 GV *gvp;
473 CV *cv;
474
475 if (!SvOK (cb_sv))
476 return 0;
477
478 cv = sv_2cv (cb_sv, &st, &gvp, 0);
479
480 if (!cv)
481 croak ("IO::AIO callback must be undef or a CODE reference");
482
483 return (SV *)cv;
484 }
485
486 #define dREQ \
487 SV *cb_cv; \
488 aio_req req; \
489 int req_pri = next_pri; \
490 next_pri = EIO_PRI_DEFAULT; \
491 \
492 cb_cv = get_cb (callback); \
493 \
494 Newz (0, req, 1, eio_req); \
495 if (!req) \
496 croak ("out of memory during eio_req allocation"); \
497 \
498 req->callback = SvREFCNT_inc (cb_cv); \
499 req->pri = req_pri
500
501 #define REQ_SEND \
502 PUTBACK; \
503 req_submit (req); \
504 SPAGAIN; \
505 \
506 if (GIMME_V != G_VOID) \
507 XPUSHs (req_sv (req, AIO_REQ_KLASS));
508
509 static int
510 extract_fd (SV *fh, int wr)
511 {
512 int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
513
514 if (fd < 0)
515 croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
516
517 return fd;
518 }
519
520 MODULE = IO::AIO PACKAGE = IO::AIO
521
522 PROTOTYPES: ENABLE
523
524 BOOT:
525 {
526 stash = gv_stashpv ("IO::AIO", 1);
527
528 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
529 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
530 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
531 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
532 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
533 #ifndef _WIN32
534 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
535 #endif
536 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
537 newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
538 newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
539 newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
540
541 create_respipe ();
542
543 if (eio_init (want_poll, done_poll) < 0)
544 croak ("IO::AIO: unable to initialise eio library");
545
546 /* atfork child called in fifo order, so before eio's handler */
547 X_THREAD_ATFORK (0, 0, atfork_child);
548 }
549
550 void
551 max_poll_reqs (int nreqs)
552 PROTOTYPE: $
553 CODE:
554 eio_set_max_poll_reqs (nreqs);
555
556 void
557 max_poll_time (double nseconds)
558 PROTOTYPE: $
559 CODE:
560 eio_set_max_poll_time (nseconds);
561
562 void
563 min_parallel (int nthreads)
564 PROTOTYPE: $
565 CODE:
566 eio_set_min_parallel (nthreads);
567
568 void
569 max_parallel (int nthreads)
570 PROTOTYPE: $
571 CODE:
572 eio_set_max_parallel (nthreads);
573
574 void
575 max_idle (int nthreads)
576 PROTOTYPE: $
577 CODE:
578 eio_set_max_idle (nthreads);
579
580 void
581 max_outstanding (int maxreqs)
582 PROTOTYPE: $
583 CODE:
584 max_outstanding = maxreqs;
585
586 void
587 aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
588 PROTOTYPE: $$$;$
589 PPCODE:
590 {
591 dREQ;
592
593 req->type = EIO_OPEN;
594 req->sv1 = newSVsv (pathname);
595 req->ptr1 = SvPVbyte_nolen (req->sv1);
596 req->int1 = flags;
597 req->int2 = mode;
598
599 REQ_SEND;
600 }
601
602 void
603 aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
604 PROTOTYPE: $;$
605 ALIAS:
606 aio_fsync = EIO_FSYNC
607 aio_fdatasync = EIO_FDATASYNC
608 PPCODE:
609 {
610 int fd = extract_fd (fh, 0);
611 dREQ;
612
613 req->type = ix;
614 req->sv1 = newSVsv (fh);
615 req->int1 = fd;
616
617 REQ_SEND (req);
618 }
619
620 void
621 aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
622 PROTOTYPE: $$$$;$
623 PPCODE:
624 {
625 int fd = extract_fd (fh, 0);
626 dREQ;
627
628 req->type = EIO_SYNC_FILE_RANGE;
629 req->sv1 = newSVsv (fh);
630 req->int1 = fd;
631 req->offs = SvVAL64 (offset);
632 req->size = SvVAL64 (nbytes);
633 req->int2 = flags;
634
635 REQ_SEND (req);
636 }
637
638 void
639 aio_close (SV *fh, SV *callback=&PL_sv_undef)
640 PROTOTYPE: $;$
641 PPCODE:
642 {
643 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
644 int fd = extract_fd (fh, 0);
645 dREQ;
646
647 if (close_pipe < 0)
648 {
649 int pipefd [2];
650
651 if (pipe (pipefd) < 0
652 || close (pipefd [1]) < 0
653 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
654 abort (); /*D*/
655
656 close_pipe = pipefd [0];
657 }
658
659 req->type = EIO_DUP2;
660 req->int1 = close_pipe;
661 req->sv2 = newSVsv (fh);
662 req->int2 = fd;
663
664 REQ_SEND (req);
665 }
666
667 void
668 aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
669 ALIAS:
670 aio_read = EIO_READ
671 aio_write = EIO_WRITE
672 PROTOTYPE: $$$$$;$
673 PPCODE:
674 {
675 STRLEN svlen;
676 int fd = extract_fd (fh, ix == EIO_WRITE);
677 char *svptr = SvPVbyte (data, svlen);
678 UV len = SvUV (length);
679
680 if (dataoffset < 0)
681 dataoffset += svlen;
682
683 if (dataoffset < 0 || dataoffset > svlen)
684 croak ("dataoffset outside of data scalar");
685
686 if (ix == EIO_WRITE)
687 {
688 /* write: check length and adjust. */
689 if (!SvOK (length) || len + dataoffset > svlen)
690 len = svlen - dataoffset;
691 }
692 else
693 {
694 /* read: check type and grow scalar as necessary */
695 SvUPGRADE (data, SVt_PV);
696 svptr = SvGROW (data, len + dataoffset + 1);
697 }
698
699 {
700 dREQ;
701
702 req->type = ix;
703 req->sv1 = newSVsv (fh);
704 req->int1 = fd;
705 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
706 req->size = len;
707 req->sv2 = SvREFCNT_inc (data);
708 req->ptr2 = (char *)svptr + dataoffset;
709 req->stroffset = dataoffset;
710
711 if (!SvREADONLY (data))
712 {
713 SvREADONLY_on (data);
714 req->flags |= FLAG_SV2_RO_OFF;
715 }
716
717 REQ_SEND;
718 }
719 }
720
721 void
722 aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
723 PROTOTYPE: $$;$
724 PPCODE:
725 {
726 SV *data;
727 dREQ;
728
729 req->type = EIO_READLINK;
730 req->sv1 = newSVsv (path);
731 req->ptr1 = SvPVbyte_nolen (req->sv1);
732
733 REQ_SEND;
734 }
735
736 void
737 aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
738 PROTOTYPE: $$$$;$
739 PPCODE:
740 {
741 int ifd = extract_fd (in_fh , 0);
742 int ofd = extract_fd (out_fh, 0);
743 dREQ;
744
745 req->type = EIO_SENDFILE;
746 req->sv1 = newSVsv (out_fh);
747 req->int1 = ofd;
748 req->sv2 = newSVsv (in_fh);
749 req->int2 = ifd;
750 req->offs = SvVAL64 (in_offset);
751 req->size = length;
752
753 REQ_SEND;
754 }
755
756 void
757 aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
758 PROTOTYPE: $$$;$
759 PPCODE:
760 {
761 int fd = extract_fd (fh, 0);
762 dREQ;
763
764 req->type = EIO_READAHEAD;
765 req->sv1 = newSVsv (fh);
766 req->int1 = fd;
767 req->offs = SvVAL64 (offset);
768 req->size = length;
769
770 REQ_SEND;
771 }
772
773 void
774 aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
775 ALIAS:
776 aio_stat = EIO_STAT
777 aio_lstat = EIO_LSTAT
778 PPCODE:
779 {
780 dREQ;
781
782 req->sv1 = newSVsv (fh_or_path);
783
784 if (SvPOK (req->sv1))
785 {
786 req->type = ix;
787 req->ptr1 = SvPVbyte_nolen (req->sv1);
788 }
789 else
790 {
791 req->type = EIO_FSTAT;
792 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
793 }
794
795 REQ_SEND;
796 }
797
798 void
799 aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
800 PPCODE:
801 {
802 dREQ;
803
804 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
805 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
806 req->sv1 = newSVsv (fh_or_path);
807
808 if (SvPOK (req->sv1))
809 {
810 req->type = EIO_UTIME;
811 req->ptr1 = SvPVbyte_nolen (req->sv1);
812 }
813 else
814 {
815 req->type = EIO_FUTIME;
816 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
817 }
818
819 REQ_SEND;
820 }
821
822 void
823 aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
824 PPCODE:
825 {
826 dREQ;
827
828 req->sv1 = newSVsv (fh_or_path);
829 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
830
831 if (SvPOK (req->sv1))
832 {
833 req->type = EIO_TRUNCATE;
834 req->ptr1 = SvPVbyte_nolen (req->sv1);
835 }
836 else
837 {
838 req->type = EIO_FTRUNCATE;
839 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
840 }
841
842 REQ_SEND;
843 }
844
845 void
846 aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
847 ALIAS:
848 aio_chmod = EIO_CHMOD
849 aio_mkdir = EIO_MKDIR
850 PPCODE:
851 {
852 dREQ;
853
854 req->int2 = mode;
855 req->sv1 = newSVsv (fh_or_path);
856
857 if (SvPOK (req->sv1))
858 {
859 req->type = ix;
860 req->ptr1 = SvPVbyte_nolen (req->sv1);
861 }
862 else
863 {
864 req->type = EIO_FCHMOD;
865 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
866 }
867
868 REQ_SEND;
869 }
870
871 void
872 aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
873 PPCODE:
874 {
875 dREQ;
876
877 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
878 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
879 req->sv1 = newSVsv (fh_or_path);
880
881 if (SvPOK (req->sv1))
882 {
883 req->type = EIO_CHOWN;
884 req->ptr1 = SvPVbyte_nolen (req->sv1);
885 }
886 else
887 {
888 req->type = EIO_FCHOWN;
889 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
890 }
891
892 REQ_SEND;
893 }
894
895 void
896 aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
897 ALIAS:
898 aio_unlink = EIO_UNLINK
899 aio_rmdir = EIO_RMDIR
900 aio_readdir = EIO_READDIR
901 PPCODE:
902 {
903 dREQ;
904
905 req->type = ix;
906 req->sv1 = newSVsv (pathname);
907 req->ptr1 = SvPVbyte_nolen (req->sv1);
908
909 REQ_SEND;
910 }
911
912 void
913 aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
914 ALIAS:
915 aio_link = EIO_LINK
916 aio_symlink = EIO_SYMLINK
917 aio_rename = EIO_RENAME
918 PPCODE:
919 {
920 dREQ;
921
922 req->type = ix;
923 req->sv1 = newSVsv (oldpath);
924 req->ptr1 = SvPVbyte_nolen (req->sv1);
925 req->sv2 = newSVsv (newpath);
926 req->ptr2 = SvPVbyte_nolen (req->sv2);
927
928 REQ_SEND;
929 }
930
931 void
932 aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
933 PPCODE:
934 {
935 dREQ;
936
937 req->type = EIO_MKNOD;
938 req->sv1 = newSVsv (pathname);
939 req->ptr1 = SvPVbyte_nolen (req->sv1);
940 req->int2 = (mode_t)mode;
941 req->offs = dev;
942
943 REQ_SEND;
944 }
945
946 void
947 aio_busy (double delay, SV *callback=&PL_sv_undef)
948 PPCODE:
949 {
950 dREQ;
951
952 req->type = EIO_BUSY;
953 req->nv1 = delay < 0. ? 0. : delay;
954
955 REQ_SEND;
956 }
957
958 void
959 aio_group (SV *callback=&PL_sv_undef)
960 PROTOTYPE: ;$
961 PPCODE:
962 {
963 dREQ;
964
965 req->type = EIO_GROUP;
966
967 req_submit (req);
968 XPUSHs (req_sv (req, AIO_GRP_KLASS));
969 }
970
971 void
972 aio_nop (SV *callback=&PL_sv_undef)
973 ALIAS:
974 aio_nop = EIO_NOP
975 aio_sync = EIO_SYNC
976 PPCODE:
977 {
978 dREQ;
979
980 req->type = ix;
981
982 REQ_SEND;
983 }
984
985 int
986 aioreq_pri (int pri = 0)
987 PROTOTYPE: ;$
988 CODE:
989 RETVAL = next_pri;
990 if (items > 0)
991 {
992 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
993 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
994 next_pri = pri;
995 }
996 OUTPUT:
997 RETVAL
998
999 void
1000 aioreq_nice (int nice = 0)
1001 CODE:
1002 nice = next_pri - nice;
1003 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1004 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1005 next_pri = nice;
1006
1007 void
1008 flush ()
1009 PROTOTYPE:
1010 CODE:
1011 while (eio_nreqs ())
1012 {
1013 poll_wait ();
1014 poll_cb ();
1015 }
1016
1017 int
1018 poll()
1019 PROTOTYPE:
1020 CODE:
1021 poll_wait ();
1022 RETVAL = poll_cb ();
1023 OUTPUT:
1024 RETVAL
1025
1026 int
1027 poll_fileno()
1028 PROTOTYPE:
1029 CODE:
1030 RETVAL = respipe [0];
1031 OUTPUT:
1032 RETVAL
1033
1034 int
1035 poll_cb(...)
1036 PROTOTYPE:
1037 CODE:
1038 RETVAL = poll_cb ();
1039 OUTPUT:
1040 RETVAL
1041
1042 void
1043 poll_wait()
1044 PROTOTYPE:
1045 CODE:
1046 poll_wait ();
1047
1048 int
1049 nreqs()
1050 PROTOTYPE:
1051 CODE:
1052 RETVAL = eio_nreqs ();
1053 OUTPUT:
1054 RETVAL
1055
1056 int
1057 nready()
1058 PROTOTYPE:
1059 CODE:
1060 RETVAL = eio_nready ();
1061 OUTPUT:
1062 RETVAL
1063
1064 int
1065 npending()
1066 PROTOTYPE:
1067 CODE:
1068 RETVAL = eio_npending ();
1069 OUTPUT:
1070 RETVAL
1071
1072 int
1073 nthreads()
1074 PROTOTYPE:
1075 CODE:
1076 RETVAL = eio_nthreads ();
1077 OUTPUT:
1078 RETVAL
1079
1080 void _on_next_submit (SV *cb)
1081 CODE:
1082 SvREFCNT_dec (on_next_submit);
1083 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1084
1085 PROTOTYPES: DISABLE
1086
1087 MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1088
1089 void
1090 cancel (aio_req_ornot req)
1091 CODE:
1092 eio_cancel (req);
1093
1094 void
1095 cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1096 PPCODE:
1097 {
1098 if (GIMME_V != G_VOID)
1099 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1100
1101 if (items > 1)
1102 {
1103 SV *cb_cv = get_cb (callback);
1104
1105 SvREFCNT_dec (req->callback);
1106 req->callback = SvREFCNT_inc (cb_cv);
1107 }
1108 }
1109
1110 MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1111
1112 void
1113 add (aio_req grp, ...)
1114 PPCODE:
1115 {
1116 int i;
1117
1118 if (grp->int1 == 2)
1119 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1120
1121 for (i = 1; i < items; ++i )
1122 {
1123 aio_req req;
1124
1125 if (GIMME_V != G_VOID)
1126 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1127
1128 req = SvAIO_REQ (ST (i));
1129
1130 if (req)
1131 eio_grp_add (grp, req);
1132 }
1133 }
1134
1135 void
1136 cancel_subs (aio_req_ornot req)
1137 CODE:
1138 req_cancel_subs (req);
1139
1140 void
1141 result (aio_req grp, ...)
1142 CODE:
1143 {
1144 int i;
1145 AV *av;
1146
1147 grp->errorno = errno;
1148
1149 av = newAV ();
1150
1151 for (i = 1; i < items; ++i )
1152 av_push (av, newSVsv (ST (i)));
1153
1154 SvREFCNT_dec (grp->sv1);
1155 grp->sv1 = (SV *)av;
1156 }
1157
1158 void
1159 errno (aio_req grp, int errorno = errno)
1160 CODE:
1161 grp->errorno = errorno;
1162
1163 void
1164 limit (aio_req grp, int limit)
1165 CODE:
1166 eio_grp_limit (grp, limit);
1167
1168 void
1169 feed (aio_req grp, SV *callback=&PL_sv_undef)
1170 CODE:
1171 {
1172 SvREFCNT_dec (grp->sv2);
1173 grp->sv2 = newSVsv (callback);
1174 grp->feed = aio_grp_feed;
1175
1176 if (grp->int2 <= 0)
1177 grp->int2 = 2;
1178
1179 eio_grp_limit (grp, grp->int2);
1180 }
1181