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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.32 by root, Mon Aug 22 23:20:37 2005 UTC vs.
Revision 1.40 by root, Sat Jun 24 16:27:02 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>
12#include <sys/types.h> 13#include <sys/types.h>
13#include <sys/stat.h> 14#include <sys/stat.h>
14 15#include <limits.h>
15#include <unistd.h> 16#include <unistd.h>
16#include <fcntl.h> 17#include <fcntl.h>
17#include <signal.h> 18#include <signal.h>
18#include <sched.h> 19#include <sched.h>
19 20
… …
23# elif __freebsd 24# elif __freebsd
24# include <sys/socket.h> 25# include <sys/socket.h>
25# include <sys/uio.h> 26# include <sys/uio.h>
26# elif __hpux 27# elif __hpux
27# include <sys/socket.h> 28# include <sys/socket.h>
29# elif __solaris /* not yet */
30# include <sys/sendfile.h>
31# else
32# error sendfile support requested but not available
28# endif 33# endif
34#endif
35
36/* used for struct dirent, AIX doesn't provide it */
37#ifndef NAME_MAX
38# define NAME_MAX 4096
29#endif 39#endif
30 40
31#if __ia64 41#if __ia64
32# define STACKSIZE 65536 42# define STACKSIZE 65536
33#else 43#else
34# define STACKSIZE 4096 44# define STACKSIZE 8192
35#endif 45#endif
36 46
37enum { 47enum {
38 REQ_QUIT, 48 REQ_QUIT,
39 REQ_OPEN, REQ_CLOSE, 49 REQ_OPEN, REQ_CLOSE,
40 REQ_READ, REQ_WRITE, REQ_READAHEAD, 50 REQ_READ, REQ_WRITE, REQ_READAHEAD,
41 REQ_SENDFILE, 51 REQ_SENDFILE,
42 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 52 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43 REQ_FSYNC, REQ_FDATASYNC, 53 REQ_FSYNC, REQ_FDATASYNC,
44 REQ_UNLINK, REQ_RMDIR, 54 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45 REQ_SYMLINK, 55 REQ_READDIR,
56 REQ_LINK, REQ_SYMLINK,
46}; 57};
47 58
48typedef struct aio_cb { 59typedef struct aio_cb {
49 struct aio_cb *volatile next; 60 struct aio_cb *volatile next;
50 61
51 int type; 62 int type;
52 63
64 /* should receive a cleanup, with unions */
53 int fd, fd2; 65 int fd, fd2;
54 off_t offset; 66 off_t offset;
55 size_t length; 67 size_t length;
56 ssize_t result; 68 ssize_t result;
57 mode_t mode; /* open */ 69 mode_t mode; /* open */
… …
93 Safefree (req->statdata); 105 Safefree (req->statdata);
94 106
95 if (req->callback) 107 if (req->callback)
96 SvREFCNT_dec (req->callback); 108 SvREFCNT_dec (req->callback);
97 109
110 if (req->type == REQ_READDIR && req->result >= 0)
111 free (req->data2ptr);
112
98 Safefree (req); 113 Safefree (req);
99} 114}
100 115
101static void 116static void
102poll_wait () 117poll_wait ()
… …
166 PL_statcache = *(req->statdata); 181 PL_statcache = *(req->statdata);
167 } 182 }
168 183
169 ENTER; 184 ENTER;
170 PUSHMARK (SP); 185 PUSHMARK (SP);
171 XPUSHs (sv_2mortal (newSViv (req->result)));
172 186
173 if (req->type == REQ_OPEN) 187 if (req->type == REQ_READDIR)
174 { 188 {
189 SV *rv = &PL_sv_undef;
190
191 if (req->result >= 0)
192 {
193 char *buf = req->data2ptr;
194 AV *av = newAV ();
195
196 while (req->result)
197 {
198 SV *sv = newSVpv (buf, 0);
199
200 av_push (av, sv);
201 buf += SvCUR (sv) + 1;
202 req->result--;
203 }
204
205 rv = sv_2mortal (newRV_noinc ((SV *)av));
206 }
207
208 XPUSHs (rv);
209 }
210 else
211 {
212 XPUSHs (sv_2mortal (newSViv (req->result)));
213
214 if (req->type == REQ_OPEN)
215 {
175 /* convert fd to fh */ 216 /* convert fd to fh */
176 SV *fh; 217 SV *fh;
177 218
178 PUTBACK; 219 PUTBACK;
179 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 220 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
180 SPAGAIN; 221 SPAGAIN;
181 222
182 fh = SvREFCNT_inc (POPs); 223 fh = SvREFCNT_inc (POPs);
183 224
184 PUSHMARK (SP); 225 PUSHMARK (SP);
185 XPUSHs (sv_2mortal (fh)); 226 XPUSHs (sv_2mortal (fh));
227 }
186 } 228 }
187 229
188 if (SvOK (req->callback)) 230 if (SvOK (req->callback))
189 { 231 {
190 PUTBACK; 232 PUTBACK;
… …
313 355
314 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 356 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315 croak ("cannot set result pipe to nonblocking mode"); 357 croak ("cannot set result pipe to nonblocking mode");
316} 358}
317 359
318static void atfork_prepare (void)
319{
320 pthread_mutex_lock (&reqlock);
321 pthread_mutex_lock (&reslock);
322}
323
324static void atfork_parent (void)
325{
326 pthread_mutex_unlock (&reslock);
327 pthread_mutex_unlock (&reqlock);
328}
329
330static void atfork_child (void)
331{
332 aio_req prv;
333
334 started = 0;
335
336 while (reqs)
337 {
338 prv = reqs;
339 reqs = prv->next;
340 free_req (prv);
341 }
342
343 reqs = reqe = 0;
344
345 while (ress)
346 {
347 prv = ress;
348 ress = prv->next;
349 free_req (prv);
350 }
351
352 ress = rese = 0;
353
354 close (respipe [0]);
355 close (respipe [1]);
356 create_pipe ();
357
358 atfork_parent ();
359}
360
361/*****************************************************************************/ 360/*****************************************************************************/
362/* work around various missing functions */ 361/* work around various missing functions */
363 362
364#if !HAVE_PREADWRITE 363#if !HAVE_PREADWRITE
365# define pread aio_pread 364# define pread aio_pread
… …
368/* 367/*
369 * make our pread/pwrite safe against themselves, but not against 368 * make our pread/pwrite safe against themselves, but not against
370 * normal read/write by using a mutex. slows down execution a lot, 369 * normal read/write by using a mutex. slows down execution a lot,
371 * but that's your problem, not mine. 370 * but that's your problem, not mine.
372 */ 371 */
373static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 372static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374 373
375static ssize_t 374static ssize_t
376pread (int fd, void *buf, size_t count, off_t offset) 375pread (int fd, void *buf, size_t count, off_t offset)
377{ 376{
378 ssize_t res; 377 ssize_t res;
379 off_t ooffset; 378 off_t ooffset;
380 379
381 pthread_mutex_lock (&iolock); 380 pthread_mutex_lock (&preadwritelock);
382 ooffset = lseek (fd, 0, SEEK_CUR); 381 ooffset = lseek (fd, 0, SEEK_CUR);
383 lseek (fd, offset, SEEK_SET); 382 lseek (fd, offset, SEEK_SET);
384 res = read (fd, buf, count); 383 res = read (fd, buf, count);
385 lseek (fd, ooffset, SEEK_SET); 384 lseek (fd, ooffset, SEEK_SET);
386 pthread_mutex_unlock (&iolock); 385 pthread_mutex_unlock (&preadwritelock);
387 386
388 return res; 387 return res;
389} 388}
390 389
391static ssize_t 390static ssize_t
392pwrite (int fd, void *buf, size_t count, off_t offset) 391pwrite (int fd, void *buf, size_t count, off_t offset)
393{ 392{
394 ssize_t res; 393 ssize_t res;
395 off_t ooffset; 394 off_t ooffset;
396 395
397 pthread_mutex_lock (&iolock); 396 pthread_mutex_lock (&preadwritelock);
398 ooffset = lseek (fd, 0, SEEK_CUR); 397 ooffset = lseek (fd, 0, SEEK_CUR);
399 lseek (fd, offset, SEEK_SET); 398 lseek (fd, offset, SEEK_SET);
400 res = write (fd, buf, count); 399 res = write (fd, buf, count);
401 lseek (fd, offset, SEEK_SET); 400 lseek (fd, offset, SEEK_SET);
402 pthread_mutex_unlock (&iolock); 401 pthread_mutex_unlock (&preadwritelock);
403 402
404 return res; 403 return res;
405} 404}
406#endif 405#endif
407 406
… …
410#endif 409#endif
411 410
412#if !HAVE_READAHEAD 411#if !HAVE_READAHEAD
413# define readahead aio_readahead 412# define readahead aio_readahead
414 413
415static char readahead_buf[4096];
416
417static ssize_t 414static ssize_t
418readahead (int fd, off_t offset, size_t count) 415readahead (int fd, off_t offset, size_t count)
419{ 416{
417 char readahead_buf[4096];
418
420 while (count > 0) 419 while (count > 0)
421 { 420 {
422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 421 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423 422
424 pread (fd, readahead_buf, len, offset); 423 pread (fd, readahead_buf, len, offset);
… …
428 427
429 errno = 0; 428 errno = 0;
430} 429}
431#endif 430#endif
432 431
432#if !HAVE_READDIR_R
433# define readdir_r aio_readdir_r
434
435static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436
437static int
438readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439{
440 struct dirent *e;
441 int errorno;
442
443 pthread_mutex_lock (&readdirlock);
444
445 e = readdir (dirp);
446 errorno = errno;
447
448 if (e)
449 {
450 *res = ent;
451 strcpy (ent->d_name, e->d_name);
452 }
453 else
454 *res = 0;
455
456 pthread_mutex_unlock (&readdirlock);
457
458 errno = errorno;
459 return e ? 0 : -1;
460}
461#endif
462
433/* sendfile always needs emulation */ 463/* sendfile always needs emulation */
434static ssize_t 464static ssize_t
435sendfile_ (int ofd, int ifd, off_t offset, size_t count) 465sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436{ 466{
437 ssize_t res; 467 ssize_t res;
438 468
439 if (!count) 469 if (!count)
440 return 0; 470 return 0;
441 471
472#if HAVE_SENDFILE
442#if __linux 473# if __linux
443 res = sendfile (ofd, ifd, &offset, count); 474 res = sendfile (ofd, ifd, &offset, count);
444 475
445#elif __freebsd 476# elif __freebsd
446 /* 477 /*
447 * Of course, the freebsd sendfile is a dire hack with no thoughts 478 * Of course, the freebsd sendfile is a dire hack with no thoughts
448 * wasted on making it similar to other i/o functions. 479 * wasted on making it similar to other I/O functions.
449 */ 480 */
450 { 481 {
451 off_t sbytes; 482 off_t sbytes;
452 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 483 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453 484
454 if (!res && errno == EAGAIN) 485 if (res < 0 && sbytes)
486 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
455 res = sbytes; 487 res = sbytes;
456 } 488 }
457 489
458#elif __hpux 490# elif __hpux
459 res = sendfile (ofd, ifd, offset, count, 0, 0); 491 res = sendfile (ofd, ifd, offset, count, 0, 0);
460 492
493# elif __solaris
494 {
495 struct sendfilevec vec;
496 size_t sbytes;
497
498 vec.sfv_fd = ifd;
499 vec.sfv_flag = 0;
500 vec.sfv_off = offset;
501 vec.sfv_len = count;
502
503 res = sendfilev (ofd, &vec, 1, &sbytes);
504
505 if (res < 0 && sbytes)
506 res = sbytes;
507 }
508
509# endif
461#else 510#else
462 res = -1; 511 res = -1;
463 errno = ENOSYS; 512 errno = ENOSYS;
464#endif 513#endif
465 514
515 if (res < 0
466 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK)) 516 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
517#if __solaris
518 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
519#endif
520 )
521 )
467 { 522 {
468 /* emulate sendfile. this is a major pain in the ass */ 523 /* emulate sendfile. this is a major pain in the ass */
469 char *buf = malloc (4096); 524 char buf[4096];
470 res = 0; 525 res = 0;
471 526
472 for (;;) 527 while (count)
473 { 528 {
474 ssize_t cnt; 529 ssize_t cnt;
475 530
476 cnt = pread (ifd, buf, 4096, offset); 531 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
477 532
478 if (cnt <= 0) 533 if (cnt <= 0)
479 { 534 {
480 if (cnt && !res) res = -1; 535 if (cnt && !res) res = -1;
481 break; 536 break;
482 } 537 }
483 538
484 cnt = write (ofd, buf, cnt); 539 cnt = write (ofd, buf, cnt);
485 540
486 if (cnt <= 0) 541 if (cnt <= 0)
487 { 542 {
488 if (cnt && !res) res = -1; 543 if (cnt && !res) res = -1;
489 break; 544 break;
490 } 545 }
491 546
492 offset += cnt; 547 offset += cnt;
493 res += cnt; 548 res += cnt;
549 count -= cnt;
494 } 550 }
495
496 {
497 int errorno = errno;
498 free (buf);
499 errno = errorno;
500 }
501 } 551 }
502 552
503 return res; 553 return res;
554}
555
556/* read a full directory */
557static int
558scandir_ (const char *path, void **namesp)
559{
560 DIR *dirp = opendir (path);
561 union
562 {
563 struct dirent d;
564 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565 } u;
566 struct dirent *entp;
567 char *name, *names;
568 int memlen = 4096;
569 int memofs = 0;
570 int res = 0;
571 int errorno;
572
573 if (!dirp)
574 return -1;
575
576 names = malloc (memlen);
577
578 for (;;)
579 {
580 errno = 0, readdir_r (dirp, &u.d, &entp);
581
582 if (!entp)
583 break;
584
585 name = entp->d_name;
586
587 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588 {
589 int len = strlen (name) + 1;
590
591 res++;
592
593 while (memofs + len > memlen)
594 {
595 memlen *= 2;
596 names = realloc (names, memlen);
597 if (!names)
598 break;
599 }
600
601 memcpy (names + memofs, name, len);
602 memofs += len;
603 }
604 }
605
606 errorno = errno;
607 closedir (dirp);
608
609 if (errorno)
610 {
611 free (names);
612 errno = errorno;
613 res = -1;
614 }
615
616 *namesp = (void *)names;
617 return res;
504} 618}
505 619
506/*****************************************************************************/ 620/*****************************************************************************/
507 621
508static void * 622static void *
… …
551 665
552 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 666 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
553 case REQ_CLOSE: req->result = close (req->fd); break; 667 case REQ_CLOSE: req->result = close (req->fd); break;
554 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 668 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
555 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 669 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
671 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
556 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 672 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
557 673
558 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 674 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
559 case REQ_FSYNC: req->result = fsync (req->fd); break; 675 case REQ_FSYNC: req->result = fsync (req->fd); break;
676 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
560 677
561 case REQ_QUIT: 678 case REQ_QUIT:
562 break; 679 break;
563 680
564 default: 681 default:
… …
588 pthread_mutex_unlock (&reslock); 705 pthread_mutex_unlock (&reslock);
589 } 706 }
590 while (type != REQ_QUIT); 707 while (type != REQ_QUIT);
591 708
592 return 0; 709 return 0;
710}
711
712/*****************************************************************************/
713
714static void atfork_prepare (void)
715{
716 pthread_mutex_lock (&reqlock);
717 pthread_mutex_lock (&reslock);
718#if !HAVE_PREADWRITE
719 pthread_mutex_lock (&preadwritelock);
720#endif
721#if !HAVE_READDIR_R
722 pthread_mutex_lock (&readdirlock);
723#endif
724}
725
726static void atfork_parent (void)
727{
728#if !HAVE_READDIR_R
729 pthread_mutex_unlock (&readdirlock);
730#endif
731#if !HAVE_PREADWRITE
732 pthread_mutex_unlock (&preadwritelock);
733#endif
734 pthread_mutex_unlock (&reslock);
735 pthread_mutex_unlock (&reqlock);
736}
737
738static void atfork_child (void)
739{
740 aio_req prv;
741
742 started = 0;
743
744 while (reqs)
745 {
746 prv = reqs;
747 reqs = prv->next;
748 free_req (prv);
749 }
750
751 reqs = reqe = 0;
752
753 while (ress)
754 {
755 prv = ress;
756 ress = prv->next;
757 free_req (prv);
758 }
759
760 ress = rese = 0;
761
762 close (respipe [0]);
763 close (respipe [1]);
764 create_pipe ();
765
766 atfork_parent ();
593} 767}
594 768
595#define dREQ \ 769#define dREQ \
596 aio_req req; \ 770 aio_req req; \
597 \ 771 \
… …
613 create_pipe (); 787 create_pipe ();
614 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 788 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
615} 789}
616 790
617void 791void
618min_parallel(nthreads) 792min_parallel (nthreads)
619 int nthreads 793 int nthreads
620 PROTOTYPE: $ 794 PROTOTYPE: $
621 795
622void 796void
623max_parallel(nthreads) 797max_parallel (nthreads)
624 int nthreads 798 int nthreads
625 PROTOTYPE: $ 799 PROTOTYPE: $
626 800
627int 801int
628max_outstanding(nreqs) 802max_outstanding (nreqs)
629 int nreqs 803 int nreqs
630 PROTOTYPE: $ 804 PROTOTYPE: $
631 CODE: 805 CODE:
632 RETVAL = max_outstanding; 806 RETVAL = max_outstanding;
633 max_outstanding = nreqs; 807 max_outstanding = nreqs;
634 808
635void 809void
636aio_open(pathname,flags,mode,callback=&PL_sv_undef) 810aio_open (pathname,flags,mode,callback=&PL_sv_undef)
637 SV * pathname 811 SV * pathname
638 int flags 812 int flags
639 int mode 813 int mode
640 SV * callback 814 SV * callback
641 PROTOTYPE: $$$;$ 815 PROTOTYPE: $$$;$
… …
651 825
652 send_req (req); 826 send_req (req);
653} 827}
654 828
655void 829void
656aio_close(fh,callback=&PL_sv_undef) 830aio_close (fh,callback=&PL_sv_undef)
657 SV * fh 831 SV * fh
658 SV * callback 832 SV * callback
659 PROTOTYPE: $;$ 833 PROTOTYPE: $;$
660 ALIAS: 834 ALIAS:
661 aio_close = REQ_CLOSE 835 aio_close = REQ_CLOSE
… …
671 845
672 send_req (req); 846 send_req (req);
673} 847}
674 848
675void 849void
676aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 850aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
677 SV * fh 851 SV * fh
678 UV offset 852 UV offset
679 UV length 853 UV length
680 SV * data 854 SV * data
681 UV dataoffset 855 UV dataoffset
… …
735 send_req (req); 909 send_req (req);
736 } 910 }
737} 911}
738 912
739void 913void
740aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 914aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
741 SV * out_fh 915 SV * out_fh
742 SV * in_fh 916 SV * in_fh
743 UV in_offset 917 UV in_offset
744 UV length 918 UV length
745 SV * callback 919 SV * callback
… …
758 932
759 send_req (req); 933 send_req (req);
760} 934}
761 935
762void 936void
763aio_readahead(fh,offset,length,callback=&PL_sv_undef) 937aio_readahead (fh,offset,length,callback=&PL_sv_undef)
764 SV * fh 938 SV * fh
765 UV offset 939 UV offset
766 IV length 940 IV length
767 SV * callback 941 SV * callback
768 PROTOTYPE: $$$;$ 942 PROTOTYPE: $$$;$
… …
778 952
779 send_req (req); 953 send_req (req);
780} 954}
781 955
782void 956void
783aio_stat(fh_or_path,callback=&PL_sv_undef) 957aio_stat (fh_or_path,callback=&PL_sv_undef)
784 SV * fh_or_path 958 SV * fh_or_path
785 SV * callback 959 SV * callback
786 ALIAS: 960 ALIAS:
787 aio_stat = REQ_STAT 961 aio_stat = REQ_STAT
788 aio_lstat = REQ_LSTAT 962 aio_lstat = REQ_LSTAT
… …
812 986
813 send_req (req); 987 send_req (req);
814} 988}
815 989
816void 990void
817aio_unlink(pathname,callback=&PL_sv_undef) 991aio_unlink (pathname,callback=&PL_sv_undef)
818 SV * pathname 992 SV * pathname
819 SV * callback 993 SV * callback
820 ALIAS: 994 ALIAS:
821 aio_unlink = REQ_UNLINK 995 aio_unlink = REQ_UNLINK
822 aio_rmdir = REQ_RMDIR 996 aio_rmdir = REQ_RMDIR
997 aio_readdir = REQ_READDIR
823 CODE: 998 CODE:
824{ 999{
825 dREQ; 1000 dREQ;
826 1001
827 req->type = ix; 1002 req->type = ix;
… …
830 1005
831 send_req (req); 1006 send_req (req);
832} 1007}
833 1008
834void 1009void
835aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1010aio_link (oldpath,newpath,callback=&PL_sv_undef)
836 SV * oldpath 1011 SV * oldpath
837 SV * newpath 1012 SV * newpath
838 SV * callback 1013 SV * callback
1014 ALIAS:
1015 aio_link = REQ_LINK
1016 aio_symlink = REQ_SYMLINK
1017 aio_rename = REQ_RENAME
839 CODE: 1018 CODE:
840{ 1019{
841 dREQ; 1020 dREQ;
842 1021
843 req->type = REQ_SYMLINK; 1022 req->type = ix;
844 req->fh = newSVsv (oldpath); 1023 req->fh = newSVsv (oldpath);
845 req->data2ptr = SvPVbyte_nolen (req->fh); 1024 req->data2ptr = SvPVbyte_nolen (req->fh);
846 req->data = newSVsv (newpath); 1025 req->data = newSVsv (newpath);
847 req->dataptr = SvPVbyte_nolen (req->data); 1026 req->dataptr = SvPVbyte_nolen (req->data);
848 1027
849 send_req (req); 1028 send_req (req);
850} 1029}
851 1030
852void 1031void
853flush() 1032flush ()
854 PROTOTYPE: 1033 PROTOTYPE:
855 CODE: 1034 CODE:
856 while (nreqs) 1035 while (nreqs)
857 { 1036 {
858 poll_wait (); 1037 poll_wait ();

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