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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.29 by root, Wed Aug 17 06:12:10 2005 UTC vs.
Revision 1.44 by root, Sat Oct 21 23:20:29 2006 UTC

… …
5#include "perl.h" 5#include "perl.h"
6#include "XSUB.h" 6#include "XSUB.h"
7 7
8#include "autoconf/config.h" 8#include "autoconf/config.h"
9 9
10#include <pthread.h>
11
12#include <stddef.h>
13#include <errno.h>
10#include <sys/types.h> 14#include <sys/types.h>
11#include <sys/stat.h> 15#include <sys/stat.h>
12 16#include <limits.h>
13#include <unistd.h> 17#include <unistd.h>
14#include <fcntl.h> 18#include <fcntl.h>
15#include <signal.h> 19#include <signal.h>
16#include <sched.h> 20#include <sched.h>
17 21
18#include <pthread.h> 22#if HAVE_SENDFILE
23# if __linux
24# include <sys/sendfile.h>
25# elif __freebsd
26# include <sys/socket.h>
27# include <sys/uio.h>
28# elif __hpux
29# include <sys/socket.h>
30# elif __solaris /* not yet */
31# include <sys/sendfile.h>
32# else
33# error sendfile support requested but not available
34# endif
35#endif
19 36
20typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 37/* used for struct dirent, AIX doesn't provide it */
21typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 38#ifndef NAME_MAX
22typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 39# define NAME_MAX 4096
40#endif
23 41
24#if __ia64 42#if __ia64
25# define STACKSIZE 65536 43# define STACKSIZE 65536
26#else 44#else
27# define STACKSIZE 4096 45# define STACKSIZE 8192
28#endif 46#endif
29 47
30enum { 48enum {
31 REQ_QUIT, 49 REQ_QUIT,
32 REQ_OPEN, REQ_CLOSE, 50 REQ_OPEN, REQ_CLOSE,
33 REQ_READ, REQ_WRITE, REQ_READAHEAD, 51 REQ_READ, REQ_WRITE, REQ_READAHEAD,
52 REQ_SENDFILE,
34 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 53 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35 REQ_FSYNC, REQ_FDATASYNC, 54 REQ_FSYNC, REQ_FDATASYNC,
36 REQ_UNLINK, REQ_RMDIR, 55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
37 REQ_SYMLINK, 56 REQ_READDIR,
57 REQ_LINK, REQ_SYMLINK,
58 REQ_GROUP,
38}; 59};
39 60
61#define AIO_REQ_KLASS "IO::AIO::REQ"
62#define AIO_GRP_KLASS "IO::AIO::GRP"
63
40typedef struct aio_cb { 64typedef struct aio_cb
65{
66 struct aio_cb *grp, *grp_prev, *grp_next;
67
41 struct aio_cb *volatile next; 68 struct aio_cb *volatile next;
42 69
43 int type; 70 SV *self; /* the perl counterpart of this request, if any */
44 71
45 int fd; 72 SV *data, *callback;
73 SV *fh, *fh2;
74 void *dataptr, *data2ptr;
75 Stat_t *statdata;
46 off_t offset; 76 off_t offset;
47 size_t length; 77 size_t length;
48 ssize_t result; 78 ssize_t result;
79
80 int type;
81 int fd, fd2;
82 int errorno;
83 STRLEN dataoffset;
49 mode_t mode; /* open */ 84 mode_t mode; /* open */
50 int errorno; 85 unsigned char cancelled;
51 SV *data, *callback, *fh;
52 void *dataptr, *data2ptr;
53 STRLEN dataoffset;
54
55 Stat_t *statdata;
56} aio_cb; 86} aio_cb;
57 87
58typedef aio_cb *aio_req; 88typedef aio_cb *aio_req;
89typedef aio_cb *aio_req_ornot;
90typedef aio_cb *aio_group;
59 91
60static int started; 92static int started, wanted;
61static volatile int nreqs; 93static volatile int nreqs;
62static int max_outstanding = 1<<30; 94static int max_outstanding = 1<<30;
63static int respipe [2]; 95static int respipe [2];
64 96
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 97static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
… …
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 99static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68 100
69static volatile aio_req reqs, reqe; /* queue start, queue end */ 101static volatile aio_req reqs, reqe; /* queue start, queue end */
70static volatile aio_req ress, rese; /* queue start, queue end */ 102static volatile aio_req ress, rese; /* queue start, queue end */
71 103
104/* must be called at most once */
105static SV *req_sv (aio_req req, const char *klass)
106{
107 req->self = (SV *)newHV ();
108 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
109
110 return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1)));
111}
112
113static aio_req SvAIO_REQ (SV *sv, const char *klass)
114{
115 if (!sv_derived_from (sv, klass) || !SvROK (sv))
116 croak ("object of class %s expected", klass);
117
118 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
119
120 return mg ? (aio_req)mg->mg_ptr : 0;
121}
122
72static void free_req (aio_req req) 123static void req_free (aio_req req)
73{ 124{
125 if (req->self)
126 {
127 sv_unmagic (req->self, PERL_MAGIC_ext);
128 SvREFCNT_dec (req->self);
129 }
130
74 if (req->data) 131 if (req->data)
75 SvREFCNT_dec (req->data); 132 SvREFCNT_dec (req->data);
76 133
77 if (req->fh) 134 if (req->fh)
78 SvREFCNT_dec (req->fh); 135 SvREFCNT_dec (req->fh);
79 136
137 if (req->fh2)
138 SvREFCNT_dec (req->fh2);
139
80 if (req->statdata) 140 if (req->statdata)
81 Safefree (req->statdata); 141 Safefree (req->statdata);
82 142
83 if (req->callback) 143 if (req->callback)
84 SvREFCNT_dec (req->callback); 144 SvREFCNT_dec (req->callback);
145
146 if (req->type == REQ_READDIR && req->result >= 0)
147 free (req->data2ptr);
85 148
86 Safefree (req); 149 Safefree (req);
87} 150}
88 151
89static void 152static void
… …
116 { 179 {
117 ress = req->next; 180 ress = req->next;
118 181
119 if (!ress) 182 if (!ress)
120 { 183 {
121 rese = 0;
122
123 /* read any signals sent by the worker threads */ 184 /* read any signals sent by the worker threads */
124 char buf [32]; 185 char buf [32];
125 while (read (respipe [0], buf, 32) == 32) 186 while (read (respipe [0], buf, 32) == 32)
126 ; 187 ;
188
189 rese = 0;
127 } 190 }
128 } 191 }
129 192
130 pthread_mutex_unlock (&reslock); 193 pthread_mutex_unlock (&reslock);
131 194
… …
154 PL_statcache = *(req->statdata); 217 PL_statcache = *(req->statdata);
155 } 218 }
156 219
157 ENTER; 220 ENTER;
158 PUSHMARK (SP); 221 PUSHMARK (SP);
159 XPUSHs (sv_2mortal (newSViv (req->result)));
160 222
161 if (req->type == REQ_OPEN) 223 if (req->type == REQ_READDIR)
162 { 224 {
163 /* convert fd to fh */ 225 SV *rv = &PL_sv_undef;
164 SV *fh;
165 226
166 PUTBACK; 227 if (req->result >= 0)
167 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 228 {
168 SPAGAIN; 229 char *buf = req->data2ptr;
230 AV *av = newAV ();
169 231
170 fh = SvREFCNT_inc (POPs); 232 while (req->result)
233 {
234 SV *sv = newSVpv (buf, 0);
171 235
236 av_push (av, sv);
237 buf += SvCUR (sv) + 1;
238 req->result--;
239 }
240
241 rv = sv_2mortal (newRV_noinc ((SV *)av));
242 }
243
172 PUSHMARK (SP); 244 XPUSHs (rv);
173 XPUSHs (sv_2mortal (fh));
174 } 245 }
246 else
247 {
248 XPUSHs (sv_2mortal (newSViv (req->result)));
175 249
250 if (req->type == REQ_OPEN)
251 {
252 /* convert fd to fh */
253 SV *fh;
254
255 PUTBACK;
256 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
257 SPAGAIN;
258
259 fh = SvREFCNT_inc (POPs);
260
261 PUSHMARK (SP);
262 XPUSHs (sv_2mortal (fh));
263 }
264 }
265
176 if (SvOK (req->callback)) 266 if (SvOK (req->callback) && !req->cancelled)
177 { 267 {
178 PUTBACK; 268 PUTBACK;
179 call_sv (req->callback, G_VOID | G_EVAL); 269 call_sv (req->callback, G_VOID | G_EVAL);
180 SPAGAIN; 270 SPAGAIN;
181 271
182 if (SvTRUE (ERRSV)) 272 if (SvTRUE (ERRSV))
183 { 273 {
184 free_req (req); 274 req_free (req);
185 croak (0); 275 croak (0);
186 } 276 }
187 } 277 }
188 278
189 LEAVE; 279 LEAVE;
190 280
191 errno = errorno; 281 errno = errorno;
192 count++; 282 count++;
193 } 283 }
194 284
195 free_req (req); 285 req_free (req);
196 } 286 }
197 287
198 return count; 288 return count;
199} 289}
200 290
… …
219 309
220 sigprocmask (SIG_SETMASK, &oldsigset, 0); 310 sigprocmask (SIG_SETMASK, &oldsigset, 0);
221} 311}
222 312
223static void 313static void
224send_req (aio_req req) 314req_send (aio_req req)
225{ 315{
316 while (started < wanted && nreqs >= started)
317 start_thread ();
318
226 nreqs++; 319 nreqs++;
227 320
228 pthread_mutex_lock (&reqlock); 321 pthread_mutex_lock (&reqlock);
229 322
230 req->next = 0; 323 req->next = 0;
… …
257{ 350{
258 aio_req req; 351 aio_req req;
259 Newz (0, req, 1, aio_cb); 352 Newz (0, req, 1, aio_cb);
260 req->type = REQ_QUIT; 353 req->type = REQ_QUIT;
261 354
262 send_req (req); 355 req_send (req);
263} 356}
264 357
265static void min_parallel (int nthreads) 358static void min_parallel (int nthreads)
266{ 359{
267 while (nthreads > started) 360 if (wanted < nthreads)
268 start_thread (); 361 wanted = nthreads;
269} 362}
270 363
271static void max_parallel (int nthreads) 364static void max_parallel (int nthreads)
272{ 365{
273 int cur = started; 366 int cur = started;
274 367
368 if (wanted > nthreads)
369 wanted = nthreads;
370
275 while (cur > nthreads) 371 while (cur > wanted)
276 { 372 {
277 end_thread (); 373 end_thread ();
278 cur--; 374 cur--;
279 } 375 }
280 376
281 while (started > nthreads) 377 while (started > wanted)
282 { 378 {
283 poll_wait (); 379 poll_wait ();
284 poll_cb (); 380 poll_cb ();
285 } 381 }
286} 382}
… …
293 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 389 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294 croak ("cannot set result pipe to nonblocking mode"); 390 croak ("cannot set result pipe to nonblocking mode");
295 391
296 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 392 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297 croak ("cannot set result pipe to nonblocking mode"); 393 croak ("cannot set result pipe to nonblocking mode");
298}
299
300static void atfork_prepare (void)
301{
302 pthread_mutex_lock (&reqlock);
303 pthread_mutex_lock (&reslock);
304}
305
306static void atfork_parent (void)
307{
308 pthread_mutex_unlock (&reslock);
309 pthread_mutex_unlock (&reqlock);
310}
311
312static void atfork_child (void)
313{
314 aio_req prv;
315
316 int restart = started;
317 started = 0;
318
319 while (reqs)
320 {
321 prv = reqs;
322 reqs = prv->next;
323 free_req (prv);
324 }
325
326 reqs = reqe = 0;
327
328 while (ress)
329 {
330 prv = ress;
331 ress = prv->next;
332 free_req (prv);
333 }
334
335 ress = rese = 0;
336
337 close (respipe [0]);
338 close (respipe [1]);
339 create_pipe ();
340
341 atfork_parent ();
342
343 min_parallel (restart);
344} 394}
345 395
346/*****************************************************************************/ 396/*****************************************************************************/
347/* work around various missing functions */ 397/* work around various missing functions */
348 398
… …
353/* 403/*
354 * make our pread/pwrite safe against themselves, but not against 404 * make our pread/pwrite safe against themselves, but not against
355 * normal read/write by using a mutex. slows down execution a lot, 405 * normal read/write by using a mutex. slows down execution a lot,
356 * but that's your problem, not mine. 406 * but that's your problem, not mine.
357 */ 407 */
358static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 408static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
359 409
360static ssize_t 410static ssize_t
361pread (int fd, void *buf, size_t count, off_t offset) 411pread (int fd, void *buf, size_t count, off_t offset)
362{ 412{
363 ssize_t res; 413 ssize_t res;
364 off_t ooffset; 414 off_t ooffset;
365 415
366 pthread_mutex_lock (&iolock); 416 pthread_mutex_lock (&preadwritelock);
367 ooffset = lseek (fd, 0, SEEK_CUR); 417 ooffset = lseek (fd, 0, SEEK_CUR);
368 lseek (fd, offset, SEEK_SET); 418 lseek (fd, offset, SEEK_SET);
369 res = read (fd, buf, count); 419 res = read (fd, buf, count);
370 lseek (fd, ooffset, SEEK_SET); 420 lseek (fd, ooffset, SEEK_SET);
371 pthread_mutex_unlock (&iolock); 421 pthread_mutex_unlock (&preadwritelock);
372 422
373 return res; 423 return res;
374} 424}
375 425
376static ssize_t 426static ssize_t
377pwrite (int fd, void *buf, size_t count, off_t offset) 427pwrite (int fd, void *buf, size_t count, off_t offset)
378{ 428{
379 ssize_t res; 429 ssize_t res;
380 off_t ooffset; 430 off_t ooffset;
381 431
382 pthread_mutex_lock (&iolock); 432 pthread_mutex_lock (&preadwritelock);
383 ooffset = lseek (fd, 0, SEEK_CUR); 433 ooffset = lseek (fd, 0, SEEK_CUR);
384 lseek (fd, offset, SEEK_SET); 434 lseek (fd, offset, SEEK_SET);
385 res = write (fd, buf, count); 435 res = write (fd, buf, count);
386 lseek (fd, offset, SEEK_SET); 436 lseek (fd, offset, SEEK_SET);
387 pthread_mutex_unlock (&iolock); 437 pthread_mutex_unlock (&preadwritelock);
388 438
389 return res; 439 return res;
390} 440}
391#endif 441#endif
392 442
… …
395#endif 445#endif
396 446
397#if !HAVE_READAHEAD 447#if !HAVE_READAHEAD
398# define readahead aio_readahead 448# define readahead aio_readahead
399 449
400static char readahead_buf[4096];
401
402static ssize_t 450static ssize_t
403readahead (int fd, off_t offset, size_t count) 451readahead (int fd, off_t offset, size_t count)
404{ 452{
453 char readahead_buf[4096];
454
405 while (count > 0) 455 while (count > 0)
406 { 456 {
407 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 457 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
408 458
409 pread (fd, readahead_buf, len, offset); 459 pread (fd, readahead_buf, len, offset);
… …
412 } 462 }
413 463
414 errno = 0; 464 errno = 0;
415} 465}
416#endif 466#endif
467
468#if !HAVE_READDIR_R
469# define readdir_r aio_readdir_r
470
471static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
472
473static int
474readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
475{
476 struct dirent *e;
477 int errorno;
478
479 pthread_mutex_lock (&readdirlock);
480
481 e = readdir (dirp);
482 errorno = errno;
483
484 if (e)
485 {
486 *res = ent;
487 strcpy (ent->d_name, e->d_name);
488 }
489 else
490 *res = 0;
491
492 pthread_mutex_unlock (&readdirlock);
493
494 errno = errorno;
495 return e ? 0 : -1;
496}
497#endif
498
499/* sendfile always needs emulation */
500static ssize_t
501sendfile_ (int ofd, int ifd, off_t offset, size_t count)
502{
503 ssize_t res;
504
505 if (!count)
506 return 0;
507
508#if HAVE_SENDFILE
509# if __linux
510 res = sendfile (ofd, ifd, &offset, count);
511
512# elif __freebsd
513 /*
514 * Of course, the freebsd sendfile is a dire hack with no thoughts
515 * wasted on making it similar to other I/O functions.
516 */
517 {
518 off_t sbytes;
519 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
520
521 if (res < 0 && sbytes)
522 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
523 res = sbytes;
524 }
525
526# elif __hpux
527 res = sendfile (ofd, ifd, offset, count, 0, 0);
528
529# elif __solaris
530 {
531 struct sendfilevec vec;
532 size_t sbytes;
533
534 vec.sfv_fd = ifd;
535 vec.sfv_flag = 0;
536 vec.sfv_off = offset;
537 vec.sfv_len = count;
538
539 res = sendfilev (ofd, &vec, 1, &sbytes);
540
541 if (res < 0 && sbytes)
542 res = sbytes;
543 }
544
545# endif
546#else
547 res = -1;
548 errno = ENOSYS;
549#endif
550
551 if (res < 0
552 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
553#if __solaris
554 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
555#endif
556 )
557 )
558 {
559 /* emulate sendfile. this is a major pain in the ass */
560 char buf[4096];
561 res = 0;
562
563 while (count)
564 {
565 ssize_t cnt;
566
567 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
568
569 if (cnt <= 0)
570 {
571 if (cnt && !res) res = -1;
572 break;
573 }
574
575 cnt = write (ofd, buf, cnt);
576
577 if (cnt <= 0)
578 {
579 if (cnt && !res) res = -1;
580 break;
581 }
582
583 offset += cnt;
584 res += cnt;
585 count -= cnt;
586 }
587 }
588
589 return res;
590}
591
592/* read a full directory */
593static int
594scandir_ (const char *path, void **namesp)
595{
596 DIR *dirp = opendir (path);
597 union
598 {
599 struct dirent d;
600 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
601 } u;
602 struct dirent *entp;
603 char *name, *names;
604 int memlen = 4096;
605 int memofs = 0;
606 int res = 0;
607 int errorno;
608
609 if (!dirp)
610 return -1;
611
612 names = malloc (memlen);
613
614 for (;;)
615 {
616 errno = 0, readdir_r (dirp, &u.d, &entp);
617
618 if (!entp)
619 break;
620
621 name = entp->d_name;
622
623 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
624 {
625 int len = strlen (name) + 1;
626
627 res++;
628
629 while (memofs + len > memlen)
630 {
631 memlen *= 2;
632 names = realloc (names, memlen);
633 if (!names)
634 break;
635 }
636
637 memcpy (names + memofs, name, len);
638 memofs += len;
639 }
640 }
641
642 errorno = errno;
643 closedir (dirp);
644
645 if (errorno)
646 {
647 free (names);
648 errno = errorno;
649 res = -1;
650 }
651
652 *namesp = (void *)names;
653 return res;
654}
417 655
418/*****************************************************************************/ 656/*****************************************************************************/
419 657
420static void * 658static void *
421aio_proc (void *thr_arg) 659aio_proc (void *thr_arg)
… …
445 683
446 pthread_mutex_unlock (&reqlock); 684 pthread_mutex_unlock (&reqlock);
447 685
448 errno = 0; /* strictly unnecessary */ 686 errno = 0; /* strictly unnecessary */
449 687
450 type = req->type; 688 if (!req->cancelled)
451
452 switch (type) 689 switch (req->type)
453 { 690 {
454 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 691 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
455 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 692 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
456 693
457 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 694 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
695 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
458 696
459 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
460 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
461 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
462 700
463 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 701 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
464 case REQ_CLOSE: req->result = close (req->fd); break; 702 case REQ_CLOSE: req->result = close (req->fd); break;
465 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
466 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 704 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
705 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
706 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
467 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
468 708
469 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
470 case REQ_FSYNC: req->result = fsync (req->fd); break; 710 case REQ_FSYNC: req->result = fsync (req->fd); break;
711 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
471 712
472 case REQ_QUIT: 713 case REQ_QUIT:
473 break; 714 break;
474 715
475 default: 716 default:
476 req->result = ENOSYS; 717 req->result = ENOSYS;
477 break; 718 break;
478 } 719 }
479 720
480 req->errorno = errno; 721 req->errorno = errno;
481 722
482 pthread_mutex_lock (&reslock); 723 pthread_mutex_lock (&reslock);
483 724
… …
501 while (type != REQ_QUIT); 742 while (type != REQ_QUIT);
502 743
503 return 0; 744 return 0;
504} 745}
505 746
747/*****************************************************************************/
748
749static void atfork_prepare (void)
750{
751 pthread_mutex_lock (&reqlock);
752 pthread_mutex_lock (&reslock);
753#if !HAVE_PREADWRITE
754 pthread_mutex_lock (&preadwritelock);
755#endif
756#if !HAVE_READDIR_R
757 pthread_mutex_lock (&readdirlock);
758#endif
759}
760
761static void atfork_parent (void)
762{
763#if !HAVE_READDIR_R
764 pthread_mutex_unlock (&readdirlock);
765#endif
766#if !HAVE_PREADWRITE
767 pthread_mutex_unlock (&preadwritelock);
768#endif
769 pthread_mutex_unlock (&reslock);
770 pthread_mutex_unlock (&reqlock);
771}
772
773static void atfork_child (void)
774{
775 aio_req prv;
776
777 started = 0;
778
779 while (reqs)
780 {
781 prv = reqs;
782 reqs = prv->next;
783 req_free (prv);
784 }
785
786 reqs = reqe = 0;
787
788 while (ress)
789 {
790 prv = ress;
791 ress = prv->next;
792 req_free (prv);
793 }
794
795 ress = rese = 0;
796
797 close (respipe [0]);
798 close (respipe [1]);
799 create_pipe ();
800
801 atfork_parent ();
802}
803
506#define dREQ \ 804#define dREQ \
507 aio_req req; \ 805 aio_req req; \
508 \ 806 \
509 if (SvOK (callback) && !SvROK (callback)) \ 807 if (SvOK (callback) && !SvROK (callback)) \
510 croak ("clalback must be undef or of reference type"); \ 808 croak ("callback must be undef or of reference type"); \
511 \ 809 \
512 Newz (0, req, 1, aio_cb); \ 810 Newz (0, req, 1, aio_cb); \
513 if (!req) \ 811 if (!req) \
514 croak ("out of memory during aio_req allocation"); \ 812 croak ("out of memory during aio_req allocation"); \
515 \ 813 \
516 req->callback = newSVsv (callback); 814 req->callback = newSVsv (callback)
815
816#define REQ_SEND \
817 req_send (req); \
818 \
819 if (GIMME_V != G_VOID) \
820 XPUSHs (req_sv (req, AIO_REQ_KLASS));
517 821
518MODULE = IO::AIO PACKAGE = IO::AIO 822MODULE = IO::AIO PACKAGE = IO::AIO
519 823
520PROTOTYPES: ENABLE 824PROTOTYPES: ENABLE
521 825
522BOOT: 826BOOT:
523{ 827{
828 HV *stash = gv_stashpv ("IO::AIO", 1);
829 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
830 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
831 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
832
524 create_pipe (); 833 create_pipe ();
525 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
526} 835}
527 836
528void 837void
529min_parallel(nthreads) 838min_parallel (nthreads)
530 int nthreads 839 int nthreads
531 PROTOTYPE: $ 840 PROTOTYPE: $
532 841
533void 842void
534max_parallel(nthreads) 843max_parallel (nthreads)
535 int nthreads 844 int nthreads
536 PROTOTYPE: $ 845 PROTOTYPE: $
537 846
538int 847int
539max_outstanding(nreqs) 848max_outstanding (nreqs)
540 int nreqs 849 int nreqs
541 PROTOTYPE: $ 850 PROTOTYPE: $
542 CODE: 851 CODE:
543 RETVAL = max_outstanding; 852 RETVAL = max_outstanding;
544 max_outstanding = nreqs; 853 max_outstanding = nreqs;
545 854
546void 855void
547aio_open(pathname,flags,mode,callback=&PL_sv_undef) 856aio_open (pathname,flags,mode,callback=&PL_sv_undef)
548 SV * pathname 857 SV * pathname
549 int flags 858 int flags
550 int mode 859 int mode
551 SV * callback 860 SV * callback
552 PROTOTYPE: $$$;$ 861 PROTOTYPE: $$$;$
553 CODE: 862 PPCODE:
554{ 863{
555 dREQ; 864 dREQ;
556 865
557 req->type = REQ_OPEN; 866 req->type = REQ_OPEN;
558 req->data = newSVsv (pathname); 867 req->data = newSVsv (pathname);
559 req->dataptr = SvPVbyte_nolen (req->data); 868 req->dataptr = SvPVbyte_nolen (req->data);
560 req->fd = flags; 869 req->fd = flags;
561 req->mode = mode; 870 req->mode = mode;
562 871
563 send_req (req); 872 REQ_SEND;
564} 873}
565 874
566void 875void
567aio_close(fh,callback=&PL_sv_undef) 876aio_close (fh,callback=&PL_sv_undef)
568 SV * fh 877 SV * fh
569 SV * callback 878 SV * callback
570 PROTOTYPE: $;$ 879 PROTOTYPE: $;$
571 ALIAS: 880 ALIAS:
572 aio_close = REQ_CLOSE 881 aio_close = REQ_CLOSE
573 aio_fsync = REQ_FSYNC 882 aio_fsync = REQ_FSYNC
574 aio_fdatasync = REQ_FDATASYNC 883 aio_fdatasync = REQ_FDATASYNC
575 CODE: 884 PPCODE:
576{ 885{
577 dREQ; 886 dREQ;
578 887
579 req->type = ix; 888 req->type = ix;
580 req->fh = newSVsv (fh); 889 req->fh = newSVsv (fh);
581 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
582 891
583 send_req (req); 892 REQ_SEND (req);
584} 893}
585 894
586void 895void
587aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
588 SV * fh 897 SV * fh
589 UV offset 898 UV offset
590 IV length 899 UV length
591 SV * data 900 SV * data
592 IV dataoffset 901 UV dataoffset
593 SV * callback 902 SV * callback
594 ALIAS: 903 ALIAS:
595 aio_read = REQ_READ 904 aio_read = REQ_READ
596 aio_write = REQ_WRITE 905 aio_write = REQ_WRITE
597 PROTOTYPE: $$$$$;$ 906 PROTOTYPE: $$$$$;$
598 CODE: 907 PPCODE:
599{ 908{
600 aio_req req; 909 aio_req req;
601 STRLEN svlen; 910 STRLEN svlen;
602 char *svptr = SvPVbyte (data, svlen); 911 char *svptr = SvPVbyte (data, svlen);
603 912
… …
641 { 950 {
642 SvREADONLY_on (data); 951 SvREADONLY_on (data);
643 req->data2ptr = (void *)data; 952 req->data2ptr = (void *)data;
644 } 953 }
645 954
646 send_req (req); 955 REQ_SEND;
647 } 956 }
648} 957}
649 958
650void 959void
960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
961 SV * out_fh
962 SV * in_fh
963 UV in_offset
964 UV length
965 SV * callback
966 PROTOTYPE: $$$$;$
967 PPCODE:
968{
969 dREQ;
970
971 req->type = REQ_SENDFILE;
972 req->fh = newSVsv (out_fh);
973 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
974 req->fh2 = newSVsv (in_fh);
975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
976 req->offset = in_offset;
977 req->length = length;
978
979 REQ_SEND;
980}
981
982void
651aio_readahead(fh,offset,length,callback=&PL_sv_undef) 983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
652 SV * fh 984 SV * fh
653 UV offset 985 UV offset
654 IV length 986 IV length
655 SV * callback 987 SV * callback
656 PROTOTYPE: $$$;$ 988 PROTOTYPE: $$$;$
657 CODE: 989 PPCODE:
658{ 990{
659 dREQ; 991 dREQ;
660 992
661 req->type = REQ_READAHEAD; 993 req->type = REQ_READAHEAD;
662 req->fh = newSVsv (fh); 994 req->fh = newSVsv (fh);
663 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
664 req->offset = offset; 996 req->offset = offset;
665 req->length = length; 997 req->length = length;
666 998
667 send_req (req); 999 REQ_SEND;
668} 1000}
669 1001
670void 1002void
671aio_stat(fh_or_path,callback=&PL_sv_undef) 1003aio_stat (fh_or_path,callback=&PL_sv_undef)
672 SV * fh_or_path 1004 SV * fh_or_path
673 SV * callback 1005 SV * callback
674 ALIAS: 1006 ALIAS:
675 aio_stat = REQ_STAT 1007 aio_stat = REQ_STAT
676 aio_lstat = REQ_LSTAT 1008 aio_lstat = REQ_LSTAT
677 CODE: 1009 PPCODE:
678{ 1010{
679 dREQ; 1011 dREQ;
680 1012
681 New (0, req->statdata, 1, Stat_t); 1013 New (0, req->statdata, 1, Stat_t);
682 if (!req->statdata) 1014 if (!req->statdata)
683 { 1015 {
684 free_req (req); 1016 req_free (req);
685 croak ("out of memory during aio_req->statdata allocation"); 1017 croak ("out of memory during aio_req->statdata allocation");
686 } 1018 }
687 1019
688 if (SvPOK (fh_or_path)) 1020 if (SvPOK (fh_or_path))
689 { 1021 {
… …
696 req->type = REQ_FSTAT; 1028 req->type = REQ_FSTAT;
697 req->fh = newSVsv (fh_or_path); 1029 req->fh = newSVsv (fh_or_path);
698 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
699 } 1031 }
700 1032
701 send_req (req); 1033 REQ_SEND;
702} 1034}
703 1035
704void 1036void
705aio_unlink(pathname,callback=&PL_sv_undef) 1037aio_unlink (pathname,callback=&PL_sv_undef)
706 SV * pathname 1038 SV * pathname
707 SV * callback 1039 SV * callback
708 ALIAS: 1040 ALIAS:
709 aio_unlink = REQ_UNLINK 1041 aio_unlink = REQ_UNLINK
710 aio_rmdir = REQ_RMDIR 1042 aio_rmdir = REQ_RMDIR
1043 aio_readdir = REQ_READDIR
711 CODE: 1044 PPCODE:
712{ 1045{
713 dREQ; 1046 dREQ;
714 1047
715 req->type = ix; 1048 req->type = ix;
716 req->data = newSVsv (pathname); 1049 req->data = newSVsv (pathname);
717 req->dataptr = SvPVbyte_nolen (req->data); 1050 req->dataptr = SvPVbyte_nolen (req->data);
718 1051
719 send_req (req); 1052 REQ_SEND;
720} 1053}
721 1054
722void 1055void
723aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1056aio_link (oldpath,newpath,callback=&PL_sv_undef)
724 SV * oldpath 1057 SV * oldpath
725 SV * newpath 1058 SV * newpath
726 SV * callback 1059 SV * callback
1060 ALIAS:
1061 aio_link = REQ_LINK
1062 aio_symlink = REQ_SYMLINK
1063 aio_rename = REQ_RENAME
727 CODE: 1064 PPCODE:
728{ 1065{
729 dREQ; 1066 dREQ;
730 1067
731 req->type = REQ_SYMLINK; 1068 req->type = ix;
732 req->fh = newSVsv (oldpath); 1069 req->fh = newSVsv (oldpath);
733 req->data2ptr = SvPVbyte_nolen (req->fh); 1070 req->data2ptr = SvPVbyte_nolen (req->fh);
734 req->data = newSVsv (newpath); 1071 req->data = newSVsv (newpath);
735 req->dataptr = SvPVbyte_nolen (req->data); 1072 req->dataptr = SvPVbyte_nolen (req->data);
736 1073
737 send_req (req); 1074 REQ_SEND;
738} 1075}
739 1076
740void 1077void
1078aio_group (callback=&PL_sv_undef)
1079 SV * callback
1080 PROTOTYPE: ;&
1081 PPCODE:
1082{
1083 dREQ;
1084 req->type = REQ_GROUP;
1085 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1086}
1087
1088void
741flush() 1089flush ()
742 PROTOTYPE: 1090 PROTOTYPE:
743 CODE: 1091 CODE:
744 while (nreqs) 1092 while (nreqs)
745 { 1093 {
746 poll_wait (); 1094 poll_wait ();
… …
786 CODE: 1134 CODE:
787 RETVAL = nreqs; 1135 RETVAL = nreqs;
788 OUTPUT: 1136 OUTPUT:
789 RETVAL 1137 RETVAL
790 1138
1139MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140
1141void
1142cancel (aio_req_ornot req)
1143 PROTOTYPE:
1144 CODE:
1145 req->cancelled = 1;
1146

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