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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.26 by root, Wed Aug 17 03:52:20 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;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 98static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
68static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 99static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
69 100
70static volatile aio_req reqs, reqe; /* queue start, queue end */ 101static volatile aio_req reqs, reqe; /* queue start, queue end */
71static volatile aio_req ress, rese; /* queue start, queue end */ 102static volatile aio_req ress, rese; /* queue start, queue end */
72 103
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
73static void free_req (aio_req req) 123static void req_free (aio_req req)
74{ 124{
125 if (req->self)
126 {
127 sv_unmagic (req->self, PERL_MAGIC_ext);
128 SvREFCNT_dec (req->self);
129 }
130
75 if (req->data) 131 if (req->data)
76 SvREFCNT_dec (req->data); 132 SvREFCNT_dec (req->data);
77 133
78 if (req->fh) 134 if (req->fh)
79 SvREFCNT_dec (req->fh); 135 SvREFCNT_dec (req->fh);
80 136
81 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 137 if (req->fh2)
138 SvREFCNT_dec (req->fh2);
139
140 if (req->statdata)
82 Safefree (req->statdata); 141 Safefree (req->statdata);
83 142
84 if (req->callback) 143 if (req->callback)
85 SvREFCNT_dec (req->callback); 144 SvREFCNT_dec (req->callback);
145
146 if (req->type == REQ_READDIR && req->result >= 0)
147 free (req->data2ptr);
86 148
87 Safefree (req); 149 Safefree (req);
88} 150}
89 151
90static void 152static void
… …
104poll_cb () 166poll_cb ()
105{ 167{
106 dSP; 168 dSP;
107 int count = 0; 169 int count = 0;
108 int do_croak = 0; 170 int do_croak = 0;
109 aio_req req, prv; 171 aio_req req;
110 172
173 for (;;)
174 {
111 pthread_mutex_lock (&reslock); 175 pthread_mutex_lock (&reslock);
176 req = ress;
112 177
113 { 178 if (req)
179 {
180 ress = req->next;
181
182 if (!ress)
183 {
114 /* read any signals sent by the worker threads */ 184 /* read any signals sent by the worker threads */
115 char buf [32]; 185 char buf [32];
116 while (read (respipe [0], buf, 32) == 32) 186 while (read (respipe [0], buf, 32) == 32)
187 ;
188
189 rese = 0;
190 }
117 ; 191 }
118 }
119 192
120 req = ress;
121 ress = rese = 0;
122
123 pthread_mutex_unlock (&reslock); 193 pthread_mutex_unlock (&reslock);
124 194
125 while (req) 195 if (!req)
126 { 196 break;
197
127 nreqs--; 198 nreqs--;
128 199
129 if (req->type == REQ_QUIT) 200 if (req->type == REQ_QUIT)
130 started--; 201 started--;
131 else 202 else
132 { 203 {
133 int errorno = errno; 204 int errorno = errno;
134 errno = req->errorno; 205 errno = req->errorno;
135 206
136 if (req->type == REQ_READ) 207 if (req->type == REQ_READ)
137 SvCUR_set (req->data, req->dataoffset 208 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
138 + req->result > 0 ? req->result : 0);
139 209
140 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 210 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
211 SvREADONLY_off (req->data);
212
213 if (req->statdata)
141 { 214 {
142 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 215 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
143 PL_laststatval = req->result; 216 PL_laststatval = req->result;
144 PL_statcache = *(req->statdata); 217 PL_statcache = *(req->statdata);
145 } 218 }
146 219
147 ENTER; 220 ENTER;
148 PUSHMARK (SP); 221 PUSHMARK (SP);
149 XPUSHs (sv_2mortal (newSViv (req->result)));
150 222
151 if (req->type == REQ_OPEN) 223 if (req->type == REQ_READDIR)
152 { 224 {
153 /* convert fd to fh */ 225 SV *rv = &PL_sv_undef;
154 SV *fh;
155 226
156 PUTBACK; 227 if (req->result >= 0)
157 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 228 {
158 SPAGAIN; 229 char *buf = req->data2ptr;
230 AV *av = newAV ();
159 231
160 fh = SvREFCNT_inc (POPs); 232 while (req->result)
233 {
234 SV *sv = newSVpv (buf, 0);
161 235
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
162 PUSHMARK (SP); 244 XPUSHs (rv);
163 XPUSHs (sv_2mortal (fh));
164 } 245 }
246 else
247 {
248 XPUSHs (sv_2mortal (newSViv (req->result)));
165 249
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
166 if (SvOK (req->callback)) 266 if (SvOK (req->callback) && !req->cancelled)
167 { 267 {
168 PUTBACK; 268 PUTBACK;
169 call_sv (req->callback, G_VOID | G_EVAL); 269 call_sv (req->callback, G_VOID | G_EVAL);
170 SPAGAIN; 270 SPAGAIN;
271
272 if (SvTRUE (ERRSV))
273 {
274 req_free (req);
275 croak (0);
276 }
171 } 277 }
172 278
173 LEAVE; 279 LEAVE;
174 280
175 do_croak = SvTRUE (ERRSV);
176
177 errno = errorno; 281 errno = errorno;
178 count++; 282 count++;
179 } 283 }
180 284
181 prv = req; 285 req_free (req);
182 req = req->next;
183 free_req (prv);
184
185 if (do_croak)
186 croak (0);
187 } 286 }
188 287
189 return count; 288 return count;
190} 289}
191 290
… …
210 309
211 sigprocmask (SIG_SETMASK, &oldsigset, 0); 310 sigprocmask (SIG_SETMASK, &oldsigset, 0);
212} 311}
213 312
214static void 313static void
215send_req (aio_req req) 314req_send (aio_req req)
216{ 315{
316 while (started < wanted && nreqs >= started)
317 start_thread ();
318
217 nreqs++; 319 nreqs++;
218 320
219 pthread_mutex_lock (&reqlock); 321 pthread_mutex_lock (&reqlock);
220 322
221 req->next = 0; 323 req->next = 0;
… …
229 reqe = reqs = req; 331 reqe = reqs = req;
230 332
231 pthread_cond_signal (&reqwait); 333 pthread_cond_signal (&reqwait);
232 pthread_mutex_unlock (&reqlock); 334 pthread_mutex_unlock (&reqlock);
233 335
234 while (nreqs > max_outstanding) 336 if (nreqs > max_outstanding)
337 for (;;)
235 { 338 {
339 poll_cb ();
340
341 if (nreqs <= max_outstanding)
342 break;
343
236 poll_wait (); 344 poll_wait ();
237 poll_cb ();
238 } 345 }
239} 346}
240 347
241static void 348static void
242end_thread (void) 349end_thread (void)
243{ 350{
244 aio_req req; 351 aio_req req;
245 Newz (0, req, 1, aio_cb); 352 Newz (0, req, 1, aio_cb);
246 req->type = REQ_QUIT; 353 req->type = REQ_QUIT;
247 354
248 send_req (req); 355 req_send (req);
249} 356}
250
251 357
252static void min_parallel (int nthreads) 358static void min_parallel (int nthreads)
253{ 359{
254 while (nthreads > started) 360 if (wanted < nthreads)
255 start_thread (); 361 wanted = nthreads;
256} 362}
257 363
258static void max_parallel (int nthreads) 364static void max_parallel (int nthreads)
259{ 365{
260 int cur = started; 366 int cur = started;
367
368 if (wanted > nthreads)
369 wanted = nthreads;
370
261 while (cur > nthreads) 371 while (cur > wanted)
262 { 372 {
263 end_thread (); 373 end_thread ();
264 cur--; 374 cur--;
265 } 375 }
266 376
267 while (started > nthreads) 377 while (started > wanted)
268 { 378 {
269 poll_wait (); 379 poll_wait ();
270 poll_cb (); 380 poll_cb ();
271 } 381 }
272} 382}
… …
279 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 389 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
280 croak ("cannot set result pipe to nonblocking mode"); 390 croak ("cannot set result pipe to nonblocking mode");
281 391
282 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 392 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
283 croak ("cannot set result pipe to nonblocking mode"); 393 croak ("cannot set result pipe to nonblocking mode");
284}
285
286static void atfork_prepare (void)
287{
288 pthread_mutex_lock (&frklock);
289 pthread_mutex_lock (&reqlock);
290 pthread_mutex_lock (&reslock);
291}
292
293static void atfork_parent (void)
294{
295 pthread_mutex_unlock (&reslock);
296 pthread_mutex_unlock (&reqlock);
297 pthread_mutex_unlock (&frklock);
298}
299
300static void atfork_child (void)
301{
302 int restart = started;
303 started = 0;
304
305 while (reqs)
306 {
307 free_req (reqs);
308 reqs = reqs->next;
309 }
310
311 reqs = reqe = 0;
312
313 while (ress)
314 {
315 free_req (ress);
316 ress = ress->next;
317 }
318
319 ress = rese = 0;
320
321 close (respipe [0]);
322 close (respipe [1]);
323
324 create_pipe ();
325
326 atfork_parent ();
327
328 min_parallel (restart);
329} 394}
330 395
331/*****************************************************************************/ 396/*****************************************************************************/
332/* work around various missing functions */ 397/* work around various missing functions */
333 398
… …
338/* 403/*
339 * make our pread/pwrite safe against themselves, but not against 404 * make our pread/pwrite safe against themselves, but not against
340 * 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,
341 * but that's your problem, not mine. 406 * but that's your problem, not mine.
342 */ 407 */
343static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 408static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
344 409
345static ssize_t 410static ssize_t
346pread (int fd, void *buf, size_t count, off_t offset) 411pread (int fd, void *buf, size_t count, off_t offset)
347{ 412{
348 ssize_t res; 413 ssize_t res;
349 off_t ooffset; 414 off_t ooffset;
350 415
351 pthread_mutex_lock (&iolock); 416 pthread_mutex_lock (&preadwritelock);
352 ooffset = lseek (fd, 0, SEEK_CUR); 417 ooffset = lseek (fd, 0, SEEK_CUR);
353 lseek (fd, offset, SEEK_SET); 418 lseek (fd, offset, SEEK_SET);
354 res = read (fd, buf, count); 419 res = read (fd, buf, count);
355 lseek (fd, ooffset, SEEK_SET); 420 lseek (fd, ooffset, SEEK_SET);
356 pthread_mutex_unlock (&iolock); 421 pthread_mutex_unlock (&preadwritelock);
357 422
358 return res; 423 return res;
359} 424}
360 425
361static ssize_t 426static ssize_t
362pwrite (int fd, void *buf, size_t count, off_t offset) 427pwrite (int fd, void *buf, size_t count, off_t offset)
363{ 428{
364 ssize_t res; 429 ssize_t res;
365 off_t ooffset; 430 off_t ooffset;
366 431
367 pthread_mutex_lock (&iolock); 432 pthread_mutex_lock (&preadwritelock);
368 ooffset = lseek (fd, 0, SEEK_CUR); 433 ooffset = lseek (fd, 0, SEEK_CUR);
369 lseek (fd, offset, SEEK_SET); 434 lseek (fd, offset, SEEK_SET);
370 res = write (fd, buf, count); 435 res = write (fd, buf, count);
371 lseek (fd, offset, SEEK_SET); 436 lseek (fd, offset, SEEK_SET);
372 pthread_mutex_unlock (&iolock); 437 pthread_mutex_unlock (&preadwritelock);
373 438
374 return res; 439 return res;
375} 440}
376#endif 441#endif
377 442
… …
380#endif 445#endif
381 446
382#if !HAVE_READAHEAD 447#if !HAVE_READAHEAD
383# define readahead aio_readahead 448# define readahead aio_readahead
384 449
385static char readahead_buf[4096];
386
387static ssize_t 450static ssize_t
388readahead (int fd, off_t offset, size_t count) 451readahead (int fd, off_t offset, size_t count)
389{ 452{
453 char readahead_buf[4096];
454
390 while (count > 0) 455 while (count > 0)
391 { 456 {
392 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 457 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
393 458
394 pread (fd, readahead_buf, len, offset); 459 pread (fd, readahead_buf, len, offset);
… …
397 } 462 }
398 463
399 errno = 0; 464 errno = 0;
400} 465}
401#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}
402 655
403/*****************************************************************************/ 656/*****************************************************************************/
404 657
405static void * 658static void *
406aio_proc (void *thr_arg) 659aio_proc (void *thr_arg)
… …
430 683
431 pthread_mutex_unlock (&reqlock); 684 pthread_mutex_unlock (&reqlock);
432 685
433 errno = 0; /* strictly unnecessary */ 686 errno = 0; /* strictly unnecessary */
434 687
435 type = req->type; 688 if (!req->cancelled)
436
437 switch (type) 689 switch (req->type)
438 { 690 {
439 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;
440 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;
441 693
442 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;
443 696
444 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
445 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
446 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
447 700
448 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;
449 case REQ_CLOSE: req->result = close (req->fd); break; 702 case REQ_CLOSE: req->result = close (req->fd); break;
450 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
451 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;
452 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
453 708
454 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
455 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;
456 712
457 case REQ_QUIT: 713 case REQ_QUIT:
458 break; 714 break;
459 715
460 default: 716 default:
461 req->result = ENOSYS; 717 req->result = ENOSYS;
462 break; 718 break;
463 } 719 }
464 720
465 req->errorno = errno; 721 req->errorno = errno;
466 722
467 pthread_mutex_lock (&reslock); 723 pthread_mutex_lock (&reslock);
468 724
… …
486 while (type != REQ_QUIT); 742 while (type != REQ_QUIT);
487 743
488 return 0; 744 return 0;
489} 745}
490 746
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
491#define dREQ \ 804#define dREQ \
492 aio_req req; \ 805 aio_req req; \
493 \ 806 \
494 if (SvOK (callback) && !SvROK (callback)) \ 807 if (SvOK (callback) && !SvROK (callback)) \
495 croak ("clalback must be undef or of reference type"); \ 808 croak ("callback must be undef or of reference type"); \
496 \ 809 \
497 Newz (0, req, 1, aio_cb); \ 810 Newz (0, req, 1, aio_cb); \
498 if (!req) \ 811 if (!req) \
499 croak ("out of memory during aio_req allocation"); \ 812 croak ("out of memory during aio_req allocation"); \
500 \ 813 \
501 req->callback = SvREFCNT_inc (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));
502 821
503MODULE = IO::AIO PACKAGE = IO::AIO 822MODULE = IO::AIO PACKAGE = IO::AIO
504 823
505PROTOTYPES: ENABLE 824PROTOTYPES: ENABLE
506 825
507BOOT: 826BOOT:
508{ 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
509 create_pipe (); 833 create_pipe ();
510 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
511} 835}
512 836
513void 837void
514min_parallel(nthreads) 838min_parallel (nthreads)
515 int nthreads 839 int nthreads
516 PROTOTYPE: $ 840 PROTOTYPE: $
517 841
518void 842void
519max_parallel(nthreads) 843max_parallel (nthreads)
520 int nthreads 844 int nthreads
521 PROTOTYPE: $ 845 PROTOTYPE: $
522 846
523int 847int
524max_outstanding(nreqs) 848max_outstanding (nreqs)
525 int nreqs 849 int nreqs
526 PROTOTYPE: $ 850 PROTOTYPE: $
527 CODE: 851 CODE:
528 RETVAL = max_outstanding; 852 RETVAL = max_outstanding;
529 max_outstanding = nreqs; 853 max_outstanding = nreqs;
530 854
531void 855void
532aio_open(pathname,flags,mode,callback=&PL_sv_undef) 856aio_open (pathname,flags,mode,callback=&PL_sv_undef)
533 SV * pathname 857 SV * pathname
534 int flags 858 int flags
535 int mode 859 int mode
536 SV * callback 860 SV * callback
537 PROTOTYPE: $$$;$ 861 PROTOTYPE: $$$;$
538 CODE: 862 PPCODE:
539{ 863{
540 dREQ; 864 dREQ;
541 865
542 req->type = REQ_OPEN; 866 req->type = REQ_OPEN;
543 req->data = newSVsv (pathname); 867 req->data = newSVsv (pathname);
544 req->dataptr = SvPVbyte_nolen (req->data); 868 req->dataptr = SvPVbyte_nolen (req->data);
545 req->fd = flags; 869 req->fd = flags;
546 req->mode = mode; 870 req->mode = mode;
547 871
548 send_req (req); 872 REQ_SEND;
549} 873}
550 874
551void 875void
552aio_close(fh,callback=&PL_sv_undef) 876aio_close (fh,callback=&PL_sv_undef)
553 SV * fh 877 SV * fh
554 SV * callback 878 SV * callback
555 PROTOTYPE: $;$ 879 PROTOTYPE: $;$
556 ALIAS: 880 ALIAS:
557 aio_close = REQ_CLOSE 881 aio_close = REQ_CLOSE
558 aio_fsync = REQ_FSYNC 882 aio_fsync = REQ_FSYNC
559 aio_fdatasync = REQ_FDATASYNC 883 aio_fdatasync = REQ_FDATASYNC
560 CODE: 884 PPCODE:
561{ 885{
562 dREQ; 886 dREQ;
563 887
564 req->type = ix; 888 req->type = ix;
565 req->fh = newSVsv (fh); 889 req->fh = newSVsv (fh);
566 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
567 891
568 send_req (req); 892 REQ_SEND (req);
569} 893}
570 894
571void 895void
572aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
573 SV * fh 897 SV * fh
574 UV offset 898 UV offset
575 IV length 899 UV length
576 SV * data 900 SV * data
577 IV dataoffset 901 UV dataoffset
578 SV * callback 902 SV * callback
579 ALIAS: 903 ALIAS:
580 aio_read = REQ_READ 904 aio_read = REQ_READ
581 aio_write = REQ_WRITE 905 aio_write = REQ_WRITE
582 PROTOTYPE: $$$$$;$ 906 PROTOTYPE: $$$$$;$
583 CODE: 907 PPCODE:
584{ 908{
585 aio_req req; 909 aio_req req;
586 STRLEN svlen; 910 STRLEN svlen;
587 char *svptr = SvPVbyte (data, svlen); 911 char *svptr = SvPVbyte (data, svlen);
588 912
… …
619 : IoOFP (sv_2io (fh))); 943 : IoOFP (sv_2io (fh)));
620 req->offset = offset; 944 req->offset = offset;
621 req->length = length; 945 req->length = length;
622 req->data = SvREFCNT_inc (data); 946 req->data = SvREFCNT_inc (data);
623 req->dataptr = (char *)svptr + dataoffset; 947 req->dataptr = (char *)svptr + dataoffset;
624 req->callback = SvREFCNT_inc (callback);
625 948
626 send_req (req); 949 if (!SvREADONLY (data))
950 {
951 SvREADONLY_on (data);
952 req->data2ptr = (void *)data;
953 }
954
955 REQ_SEND;
627 } 956 }
628} 957}
629 958
630void 959void
960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
961 SV * out_fh
962 SV * in_fh
963 UV in_offset
964 UV length
965 SV * callback
966 PROTOTYPE: $$$$;$
967 PPCODE:
968{
969 dREQ;
970
971 req->type = REQ_SENDFILE;
972 req->fh = newSVsv (out_fh);
973 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
974 req->fh2 = newSVsv (in_fh);
975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
976 req->offset = in_offset;
977 req->length = length;
978
979 REQ_SEND;
980}
981
982void
631aio_readahead(fh,offset,length,callback=&PL_sv_undef) 983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
632 SV * fh 984 SV * fh
633 UV offset 985 UV offset
634 IV length 986 IV length
635 SV * callback 987 SV * callback
636 PROTOTYPE: $$$;$ 988 PROTOTYPE: $$$;$
637 CODE: 989 PPCODE:
638{ 990{
639 dREQ; 991 dREQ;
640 992
641 req->type = REQ_READAHEAD; 993 req->type = REQ_READAHEAD;
642 req->fh = newSVsv (fh); 994 req->fh = newSVsv (fh);
643 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
644 req->offset = offset; 996 req->offset = offset;
645 req->length = length; 997 req->length = length;
646 998
647 send_req (req); 999 REQ_SEND;
648} 1000}
649 1001
650void 1002void
651aio_stat(fh_or_path,callback=&PL_sv_undef) 1003aio_stat (fh_or_path,callback=&PL_sv_undef)
652 SV * fh_or_path 1004 SV * fh_or_path
653 SV * callback 1005 SV * callback
654 ALIAS: 1006 ALIAS:
655 aio_stat = REQ_STAT 1007 aio_stat = REQ_STAT
656 aio_lstat = REQ_LSTAT 1008 aio_lstat = REQ_LSTAT
657 CODE: 1009 PPCODE:
658{ 1010{
659 dREQ; 1011 dREQ;
660 1012
661 New (0, req->statdata, 1, Stat_t); 1013 New (0, req->statdata, 1, Stat_t);
662 if (!req->statdata) 1014 if (!req->statdata)
1015 {
1016 req_free (req);
663 croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)"); 1017 croak ("out of memory during aio_req->statdata allocation");
1018 }
664 1019
665 if (SvPOK (fh_or_path)) 1020 if (SvPOK (fh_or_path))
666 { 1021 {
667 req->type = ix; 1022 req->type = ix;
668 req->data = newSVsv (fh_or_path); 1023 req->data = newSVsv (fh_or_path);
… …
673 req->type = REQ_FSTAT; 1028 req->type = REQ_FSTAT;
674 req->fh = newSVsv (fh_or_path); 1029 req->fh = newSVsv (fh_or_path);
675 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
676 } 1031 }
677 1032
678 send_req (req); 1033 REQ_SEND;
679} 1034}
680 1035
681void 1036void
682aio_unlink(pathname,callback=&PL_sv_undef) 1037aio_unlink (pathname,callback=&PL_sv_undef)
683 SV * pathname 1038 SV * pathname
684 SV * callback 1039 SV * callback
685 ALIAS: 1040 ALIAS:
686 aio_unlink = REQ_UNLINK 1041 aio_unlink = REQ_UNLINK
687 aio_rmdir = REQ_RMDIR 1042 aio_rmdir = REQ_RMDIR
1043 aio_readdir = REQ_READDIR
688 CODE: 1044 PPCODE:
689{ 1045{
690 dREQ; 1046 dREQ;
691 1047
692 req->type = ix; 1048 req->type = ix;
693 req->data = newSVsv (pathname); 1049 req->data = newSVsv (pathname);
694 req->dataptr = SvPVbyte_nolen (req->data); 1050 req->dataptr = SvPVbyte_nolen (req->data);
695 1051
696 send_req (req); 1052 REQ_SEND;
697} 1053}
698 1054
699void 1055void
700aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1056aio_link (oldpath,newpath,callback=&PL_sv_undef)
701 SV * oldpath 1057 SV * oldpath
702 SV * newpath 1058 SV * newpath
703 SV * callback 1059 SV * callback
1060 ALIAS:
1061 aio_link = REQ_LINK
1062 aio_symlink = REQ_SYMLINK
1063 aio_rename = REQ_RENAME
704 CODE: 1064 PPCODE:
705{ 1065{
706 dREQ; 1066 dREQ;
707 1067
708 req->type = REQ_SYMLINK; 1068 req->type = ix;
709 req->fh = newSVsv (oldpath); 1069 req->fh = newSVsv (oldpath);
710 req->data2ptr = SvPVbyte_nolen (req->fh); 1070 req->data2ptr = SvPVbyte_nolen (req->fh);
711 req->data = newSVsv (newpath); 1071 req->data = newSVsv (newpath);
712 req->dataptr = SvPVbyte_nolen (req->data); 1072 req->dataptr = SvPVbyte_nolen (req->data);
713 1073
714 send_req (req); 1074 REQ_SEND;
715} 1075}
716 1076
717void 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
718flush() 1089flush ()
719 PROTOTYPE: 1090 PROTOTYPE:
720 CODE: 1091 CODE:
721 while (nreqs) 1092 while (nreqs)
722 { 1093 {
723 poll_wait (); 1094 poll_wait ();
… …
763 CODE: 1134 CODE:
764 RETVAL = nreqs; 1135 RETVAL = nreqs;
765 OUTPUT: 1136 OUTPUT:
766 RETVAL 1137 RETVAL
767 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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