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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.16 by root, Sun Jul 31 18:20:07 2005 UTC vs.
Revision 1.31 by root, Thu Aug 18 16:34:53 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
53typedef aio_cb *aio_req; 58typedef aio_cb *aio_req;
54 59
55static int started; 60static int started, wanted;
56static volatile int nreqs; 61static volatile int nreqs;
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;
… …
62static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
63 68
64static volatile aio_req reqs, reqe; /* queue start, queue end */ 69static volatile aio_req reqs, reqe; /* queue start, queue end */
65static volatile aio_req ress, rese; /* queue start, queue end */ 70static volatile aio_req ress, rese; /* queue start, queue end */
66 71
72static void free_req (aio_req req)
73{
74 if (req->data)
75 SvREFCNT_dec (req->data);
76
77 if (req->fh)
78 SvREFCNT_dec (req->fh);
79
80 if (req->statdata)
81 Safefree (req->statdata);
82
83 if (req->callback)
84 SvREFCNT_dec (req->callback);
85
86 Safefree (req);
87}
88
67static void 89static void
68poll_wait () 90poll_wait ()
69{ 91{
70 if (nreqs && !ress) 92 if (nreqs && !ress)
71 { 93 {
… …
80static int 102static int
81poll_cb () 103poll_cb ()
82{ 104{
83 dSP; 105 dSP;
84 int count = 0; 106 int count = 0;
107 int do_croak = 0;
85 aio_req req, prv; 108 aio_req req;
86 109
110 for (;;)
111 {
87 pthread_mutex_lock (&reslock); 112 pthread_mutex_lock (&reslock);
113 req = ress;
88 114
89 { 115 if (req)
116 {
117 ress = req->next;
118
119 if (!ress)
120 {
90 /* read any signals sent by the worker threads */ 121 /* read any signals sent by the worker threads */
91 char buf [32]; 122 char buf [32];
92 while (read (respipe [0], buf, 32) > 0) 123 while (read (respipe [0], buf, 32) == 32)
124 ;
125
126 rese = 0;
127 }
93 ; 128 }
94 }
95 129
96 req = ress;
97 ress = rese = 0;
98
99 pthread_mutex_unlock (&reslock); 130 pthread_mutex_unlock (&reslock);
100 131
101 while (req) 132 if (!req)
102 { 133 break;
134
103 nreqs--; 135 nreqs--;
104 136
105 if (req->type == REQ_QUIT) 137 if (req->type == REQ_QUIT)
106 started--; 138 started--;
107 else 139 else
108 { 140 {
109 int errorno = errno; 141 int errorno = errno;
110 errno = req->errorno; 142 errno = req->errorno;
111 143
112 if (req->type == REQ_READ) 144 if (req->type == REQ_READ)
113 SvCUR_set (req->data, req->dataoffset 145 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
114 + req->result > 0 ? req->result : 0);
115 146
147 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
148 SvREADONLY_off (req->data);
149
116 if (req->data) 150 if (req->statdata)
117 SvREFCNT_dec (req->data);
118
119 if (req->fh)
120 SvREFCNT_dec (req->fh);
121
122 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
123 { 151 {
124 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 152 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
125 PL_laststatval = req->result; 153 PL_laststatval = req->result;
126 PL_statcache = *(req->statdata); 154 PL_statcache = *(req->statdata);
127
128 Safefree (req->statdata);
129 } 155 }
130 156
131 ENTER; 157 ENTER;
132 PUSHMARK (SP); 158 PUSHMARK (SP);
133 XPUSHs (sv_2mortal (newSViv (req->result))); 159 XPUSHs (sv_2mortal (newSViv (req->result)));
… …
150 if (SvOK (req->callback)) 176 if (SvOK (req->callback))
151 { 177 {
152 PUTBACK; 178 PUTBACK;
153 call_sv (req->callback, G_VOID | G_EVAL); 179 call_sv (req->callback, G_VOID | G_EVAL);
154 SPAGAIN; 180 SPAGAIN;
181
182 if (SvTRUE (ERRSV))
183 {
184 free_req (req);
185 croak (0);
186 }
155 } 187 }
156 188
157 LEAVE; 189 LEAVE;
158
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161 190
162 errno = errorno; 191 errno = errorno;
163 count++; 192 count++;
164 } 193 }
165 194
166 prv = req; 195 free_req (req);
167 req = req->next;
168 Safefree (prv);
169
170 /* TODO: croak on errors? */
171 } 196 }
172 197
173 return count; 198 return count;
174} 199}
175 200
… …
196} 221}
197 222
198static void 223static void
199send_req (aio_req req) 224send_req (aio_req req)
200{ 225{
226 while (started < wanted && nreqs >= started)
227 start_thread ();
228
201 nreqs++; 229 nreqs++;
202 230
203 pthread_mutex_lock (&reqlock); 231 pthread_mutex_lock (&reqlock);
204 232
205 req->next = 0; 233 req->next = 0;
… …
213 reqe = reqs = req; 241 reqe = reqs = req;
214 242
215 pthread_cond_signal (&reqwait); 243 pthread_cond_signal (&reqwait);
216 pthread_mutex_unlock (&reqlock); 244 pthread_mutex_unlock (&reqlock);
217 245
218 while (nreqs > max_outstanding) 246 if (nreqs > max_outstanding)
247 for (;;)
248 {
249 poll_cb ();
250
251 if (nreqs <= max_outstanding)
252 break;
253
254 poll_wait ();
255 }
256}
257
258static void
259end_thread (void)
260{
261 aio_req req;
262 Newz (0, req, 1, aio_cb);
263 req->type = REQ_QUIT;
264
265 send_req (req);
266}
267
268static void min_parallel (int nthreads)
269{
270 if (wanted < nthreads)
271 wanted = nthreads;
272}
273
274static void max_parallel (int nthreads)
275{
276 int cur = started;
277
278 if (wanted > nthreads)
279 wanted = nthreads;
280
281 while (cur > wanted)
282 {
283 end_thread ();
284 cur--;
285 }
286
287 while (started > wanted)
219 { 288 {
220 poll_wait (); 289 poll_wait ();
221 poll_cb (); 290 poll_cb ();
222 } 291 }
223} 292}
224 293
225static void 294static void create_pipe ()
226end_thread (void)
227{ 295{
296 if (pipe (respipe))
297 croak ("unable to initialize result pipe");
298
299 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
300 croak ("cannot set result pipe to nonblocking mode");
301
302 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
303 croak ("cannot set result pipe to nonblocking mode");
304}
305
306static void atfork_prepare (void)
307{
308 pthread_mutex_lock (&reqlock);
309 pthread_mutex_lock (&reslock);
310}
311
312static void atfork_parent (void)
313{
314 pthread_mutex_unlock (&reslock);
315 pthread_mutex_unlock (&reqlock);
316}
317
318static void atfork_child (void)
319{
228 aio_req req; 320 aio_req prv;
229 New (0, req, 1, aio_cb);
230 req->type = REQ_QUIT;
231 321
232 send_req (req); 322 started = 0;
323
324 while (reqs)
325 {
326 prv = reqs;
327 reqs = prv->next;
328 free_req (prv);
329 }
330
331 reqs = reqe = 0;
332
333 while (ress)
334 {
335 prv = ress;
336 ress = prv->next;
337 free_req (prv);
338 }
339
340 ress = rese = 0;
341
342 close (respipe [0]);
343 close (respipe [1]);
344 create_pipe ();
345
346 atfork_parent ();
233} 347}
348
349/*****************************************************************************/
350/* work around various missing functions */
351
352#if !HAVE_PREADWRITE
353# define pread aio_pread
354# define pwrite aio_pwrite
355
356/*
357 * make our pread/pwrite safe against themselves, but not against
358 * normal read/write by using a mutex. slows down execution a lot,
359 * but that's your problem, not mine.
360 */
361static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
362
363static ssize_t
364pread (int fd, void *buf, size_t count, off_t offset)
365{
366 ssize_t res;
367 off_t ooffset;
368
369 pthread_mutex_lock (&iolock);
370 ooffset = lseek (fd, 0, SEEK_CUR);
371 lseek (fd, offset, SEEK_SET);
372 res = read (fd, buf, count);
373 lseek (fd, ooffset, SEEK_SET);
374 pthread_mutex_unlock (&iolock);
375
376 return res;
377}
378
379static ssize_t
380pwrite (int fd, void *buf, size_t count, off_t offset)
381{
382 ssize_t res;
383 off_t ooffset;
384
385 pthread_mutex_lock (&iolock);
386 ooffset = lseek (fd, 0, SEEK_CUR);
387 lseek (fd, offset, SEEK_SET);
388 res = write (fd, buf, count);
389 lseek (fd, offset, SEEK_SET);
390 pthread_mutex_unlock (&iolock);
391
392 return res;
393}
394#endif
395
396#if !HAVE_FDATASYNC
397# define fdatasync fsync
398#endif
399
400#if !HAVE_READAHEAD
401# define readahead aio_readahead
402
403static char readahead_buf[4096];
404
405static ssize_t
406readahead (int fd, off_t offset, size_t count)
407{
408 while (count > 0)
409 {
410 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
411
412 pread (fd, readahead_buf, len, offset);
413 offset += len;
414 count -= len;
415 }
416
417 errno = 0;
418}
419#endif
420
421/*****************************************************************************/
234 422
235static void * 423static void *
236aio_proc (void *thr_arg) 424aio_proc (void *thr_arg)
237{ 425{
238 aio_req req; 426 aio_req req;
… …
264 452
265 type = req->type; 453 type = req->type;
266 454
267 switch (type) 455 switch (type)
268 { 456 {
269#if HAVE_PREADWRITE
270 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 457 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
271 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 458 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
272#else
273# error "pread/pwrite cannot be emulated, fix your os"
274#endif
275 459
276#if HAVE_READAHEAD
277 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 460 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
278#else
279 // TODO: emulate
280 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
281#endif
282 461
283 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 462 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
284 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 463 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
285 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 464 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
286 465
287 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 466 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
288 case REQ_CLOSE: req->result = close (req->fd); break; 467 case REQ_CLOSE: req->result = close (req->fd); break;
289 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 468 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
469 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
470 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
290 471
291 case REQ_FDATASYNC: 472 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
292#if HAVE_FDATASYNC
293 req->result = fdatasync (req->fd); break;
294#endif
295 case REQ_FSYNC: req->result = fsync (req->fd); break; 473 case REQ_FSYNC: req->result = fsync (req->fd); break;
296 474
297 case REQ_QUIT: 475 case REQ_QUIT:
298 break; 476 break;
299 477
… …
326 while (type != REQ_QUIT); 504 while (type != REQ_QUIT);
327 505
328 return 0; 506 return 0;
329} 507}
330 508
509#define dREQ \
510 aio_req req; \
511 \
512 if (SvOK (callback) && !SvROK (callback)) \
513 croak ("clalback must be undef or of reference type"); \
514 \
515 Newz (0, req, 1, aio_cb); \
516 if (!req) \
517 croak ("out of memory during aio_req allocation"); \
518 \
519 req->callback = newSVsv (callback);
520
331MODULE = IO::AIO PACKAGE = IO::AIO 521MODULE = IO::AIO PACKAGE = IO::AIO
332 522
333PROTOTYPES: ENABLE 523PROTOTYPES: ENABLE
334 524
335BOOT: 525BOOT:
336{ 526{
337 if (pipe (respipe)) 527 create_pipe ();
338 croak ("unable to initialize result pipe"); 528 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
339
340 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
341 croak ("cannot set result pipe to nonblocking mode");
342
343 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
344 croak ("cannot set result pipe to nonblocking mode");
345} 529}
346 530
347void 531void
348min_parallel(nthreads) 532min_parallel(nthreads)
349 int nthreads 533 int nthreads
350 PROTOTYPE: $ 534 PROTOTYPE: $
351 CODE:
352 while (nthreads > started)
353 start_thread ();
354 535
355void 536void
356max_parallel(nthreads) 537max_parallel(nthreads)
357 int nthreads 538 int nthreads
358 PROTOTYPE: $ 539 PROTOTYPE: $
359 CODE:
360{
361 int cur = started;
362 while (cur > nthreads)
363 {
364 end_thread ();
365 cur--;
366 }
367
368 while (started > nthreads)
369 {
370 poll_wait ();
371 poll_cb ();
372 }
373}
374 540
375int 541int
376max_outstanding(nreqs) 542max_outstanding(nreqs)
377 int nreqs 543 int nreqs
378 PROTOTYPE: $ 544 PROTOTYPE: $
… …
387 int mode 553 int mode
388 SV * callback 554 SV * callback
389 PROTOTYPE: $$$;$ 555 PROTOTYPE: $$$;$
390 CODE: 556 CODE:
391{ 557{
392 aio_req req; 558 dREQ;
393
394 Newz (0, req, 1, aio_cb);
395
396 if (!req)
397 croak ("out of memory during aio_req allocation");
398 559
399 req->type = REQ_OPEN; 560 req->type = REQ_OPEN;
400 req->data = newSVsv (pathname); 561 req->data = newSVsv (pathname);
401 req->dataptr = SvPV_nolen (req->data); 562 req->dataptr = SvPVbyte_nolen (req->data);
402 req->fd = flags; 563 req->fd = flags;
403 req->mode = mode; 564 req->mode = mode;
404 req->callback = SvREFCNT_inc (callback);
405 565
406 send_req (req); 566 send_req (req);
407} 567}
408 568
409void 569void
… …
415 aio_close = REQ_CLOSE 575 aio_close = REQ_CLOSE
416 aio_fsync = REQ_FSYNC 576 aio_fsync = REQ_FSYNC
417 aio_fdatasync = REQ_FDATASYNC 577 aio_fdatasync = REQ_FDATASYNC
418 CODE: 578 CODE:
419{ 579{
420 aio_req req; 580 dREQ;
421
422 Newz (0, req, 1, aio_cb);
423
424 if (!req)
425 croak ("out of memory during aio_req allocation");
426 581
427 req->type = ix; 582 req->type = ix;
428 req->fh = newSVsv (fh); 583 req->fh = newSVsv (fh);
429 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 584 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
430 req->callback = SvREFCNT_inc (callback);
431 585
432 send_req (req); 586 send_req (req);
433} 587}
434 588
435void 589void
… …
446 PROTOTYPE: $$$$$;$ 600 PROTOTYPE: $$$$$;$
447 CODE: 601 CODE:
448{ 602{
449 aio_req req; 603 aio_req req;
450 STRLEN svlen; 604 STRLEN svlen;
451 char *svptr = SvPV (data, svlen); 605 char *svptr = SvPVbyte (data, svlen);
452 606
453 SvUPGRADE (data, SVt_PV); 607 SvUPGRADE (data, SVt_PV);
454 SvPOK_on (data); 608 SvPOK_on (data);
455 609
456 if (dataoffset < 0) 610 if (dataoffset < 0)
… …
472 } 626 }
473 627
474 if (length < 0) 628 if (length < 0)
475 croak ("length must not be negative"); 629 croak ("length must not be negative");
476 630
477 Newz (0, req, 1, aio_cb); 631 {
632 dREQ;
478 633
479 if (!req)
480 croak ("out of memory during aio_req allocation");
481
482 req->type = ix; 634 req->type = ix;
483 req->fh = newSVsv (fh); 635 req->fh = newSVsv (fh);
484 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 636 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
485 : IoOFP (sv_2io (fh))); 637 : IoOFP (sv_2io (fh)));
486 req->offset = offset; 638 req->offset = offset;
487 req->length = length; 639 req->length = length;
488 req->data = SvREFCNT_inc (data); 640 req->data = SvREFCNT_inc (data);
489 req->dataptr = (char *)svptr + dataoffset; 641 req->dataptr = (char *)svptr + dataoffset;
490 req->callback = SvREFCNT_inc (callback);
491 642
643 if (!SvREADONLY (data))
644 {
645 SvREADONLY_on (data);
646 req->data2ptr = (void *)data;
647 }
648
492 send_req (req); 649 send_req (req);
650 }
493} 651}
494 652
495void 653void
496aio_readahead(fh,offset,length,callback=&PL_sv_undef) 654aio_readahead(fh,offset,length,callback=&PL_sv_undef)
497 SV * fh 655 SV * fh
… …
499 IV length 657 IV length
500 SV * callback 658 SV * callback
501 PROTOTYPE: $$$;$ 659 PROTOTYPE: $$$;$
502 CODE: 660 CODE:
503{ 661{
504 aio_req req; 662 dREQ;
505
506 if (length < 0)
507 croak ("length must not be negative");
508
509 Newz (0, req, 1, aio_cb);
510
511 if (!req)
512 croak ("out of memory during aio_req allocation");
513 663
514 req->type = REQ_READAHEAD; 664 req->type = REQ_READAHEAD;
515 req->fh = newSVsv (fh); 665 req->fh = newSVsv (fh);
516 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 666 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
517 req->offset = offset; 667 req->offset = offset;
518 req->length = length; 668 req->length = length;
519 req->callback = SvREFCNT_inc (callback);
520 669
521 send_req (req); 670 send_req (req);
522} 671}
523 672
524void 673void
… …
528 ALIAS: 677 ALIAS:
529 aio_stat = REQ_STAT 678 aio_stat = REQ_STAT
530 aio_lstat = REQ_LSTAT 679 aio_lstat = REQ_LSTAT
531 CODE: 680 CODE:
532{ 681{
533 aio_req req; 682 dREQ;
534
535 Newz (0, req, 1, aio_cb);
536
537 if (!req)
538 croak ("out of memory during aio_req allocation");
539 683
540 New (0, req->statdata, 1, Stat_t); 684 New (0, req->statdata, 1, Stat_t);
541
542 if (!req->statdata) 685 if (!req->statdata)
686 {
687 free_req (req);
543 croak ("out of memory during aio_req->statdata allocation"); 688 croak ("out of memory during aio_req->statdata allocation");
689 }
544 690
545 if (SvPOK (fh_or_path)) 691 if (SvPOK (fh_or_path))
546 { 692 {
547 req->type = ix; 693 req->type = ix;
548 req->data = newSVsv (fh_or_path); 694 req->data = newSVsv (fh_or_path);
549 req->dataptr = SvPV_nolen (req->data); 695 req->dataptr = SvPVbyte_nolen (req->data);
550 } 696 }
551 else 697 else
552 { 698 {
553 req->type = REQ_FSTAT; 699 req->type = REQ_FSTAT;
554 req->fh = newSVsv (fh_or_path); 700 req->fh = newSVsv (fh_or_path);
555 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 701 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
556 } 702 }
557 703
558 req->callback = SvREFCNT_inc (callback);
559
560 send_req (req); 704 send_req (req);
561} 705}
562 706
563void 707void
564aio_unlink(pathname,callback=&PL_sv_undef) 708aio_unlink(pathname,callback=&PL_sv_undef)
565 SV * pathname 709 SV * pathname
566 SV * callback 710 SV * callback
711 ALIAS:
712 aio_unlink = REQ_UNLINK
713 aio_rmdir = REQ_RMDIR
567 CODE: 714 CODE:
568{ 715{
569 aio_req req; 716 dREQ;
570 717
571 Newz (0, req, 1, aio_cb); 718 req->type = ix;
719 req->data = newSVsv (pathname);
720 req->dataptr = SvPVbyte_nolen (req->data);
572 721
573 if (!req) 722 send_req (req);
574 croak ("out of memory during aio_req allocation"); 723}
724
725void
726aio_symlink(oldpath,newpath,callback=&PL_sv_undef)
727 SV * oldpath
728 SV * newpath
729 SV * callback
730 CODE:
731{
732 dREQ;
575 733
576 req->type = REQ_UNLINK; 734 req->type = REQ_SYMLINK;
735 req->fh = newSVsv (oldpath);
736 req->data2ptr = SvPVbyte_nolen (req->fh);
577 req->data = newSVsv (pathname); 737 req->data = newSVsv (newpath);
578 req->dataptr = SvPV_nolen (req->data); 738 req->dataptr = SvPVbyte_nolen (req->data);
579 req->callback = SvREFCNT_inc (callback);
580 739
581 send_req (req); 740 send_req (req);
582} 741}
583 742
584void 743void

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