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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.24 by root, Wed Aug 17 03:01:56 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 */
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
123static void req_free (aio_req req)
124{
125 if (req->self)
126 {
127 sv_unmagic (req->self, PERL_MAGIC_ext);
128 SvREFCNT_dec (req->self);
129 }
130
131 if (req->data)
132 SvREFCNT_dec (req->data);
133
134 if (req->fh)
135 SvREFCNT_dec (req->fh);
136
137 if (req->fh2)
138 SvREFCNT_dec (req->fh2);
139
140 if (req->statdata)
141 Safefree (req->statdata);
142
143 if (req->callback)
144 SvREFCNT_dec (req->callback);
145
146 if (req->type == REQ_READDIR && req->result >= 0)
147 free (req->data2ptr);
148
149 Safefree (req);
150}
72 151
73static void 152static void
74poll_wait () 153poll_wait ()
75{ 154{
76 if (nreqs && !ress) 155 if (nreqs && !ress)
… …
87poll_cb () 166poll_cb ()
88{ 167{
89 dSP; 168 dSP;
90 int count = 0; 169 int count = 0;
91 int do_croak = 0; 170 int do_croak = 0;
92 aio_req req, prv; 171 aio_req req;
93 172
173 for (;;)
174 {
94 pthread_mutex_lock (&reslock); 175 pthread_mutex_lock (&reslock);
176 req = ress;
95 177
96 { 178 if (req)
179 {
180 ress = req->next;
181
182 if (!ress)
183 {
97 /* read any signals sent by the worker threads */ 184 /* read any signals sent by the worker threads */
98 char buf [32]; 185 char buf [32];
99 while (read (respipe [0], buf, 32) == 32) 186 while (read (respipe [0], buf, 32) == 32)
187 ;
188
189 rese = 0;
190 }
100 ; 191 }
101 }
102 192
103 req = ress;
104 ress = rese = 0;
105
106 pthread_mutex_unlock (&reslock); 193 pthread_mutex_unlock (&reslock);
107 194
108 while (req) 195 if (!req)
109 { 196 break;
197
110 nreqs--; 198 nreqs--;
111 199
112 if (req->type == REQ_QUIT) 200 if (req->type == REQ_QUIT)
113 started--; 201 started--;
114 else 202 else
115 { 203 {
116 int errorno = errno; 204 int errorno = errno;
117 errno = req->errorno; 205 errno = req->errorno;
118 206
119 if (req->type == REQ_READ) 207 if (req->type == REQ_READ)
120 SvCUR_set (req->data, req->dataoffset 208 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
121 + req->result > 0 ? req->result : 0);
122 209
210 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
211 SvREADONLY_off (req->data);
212
123 if (req->data) 213 if (req->statdata)
124 SvREFCNT_dec (req->data);
125
126 if (req->fh)
127 SvREFCNT_dec (req->fh);
128
129 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
130 { 214 {
131 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 215 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
132 PL_laststatval = req->result; 216 PL_laststatval = req->result;
133 PL_statcache = *(req->statdata); 217 PL_statcache = *(req->statdata);
134
135 Safefree (req->statdata);
136 } 218 }
137 219
138 ENTER; 220 ENTER;
139 PUSHMARK (SP); 221 PUSHMARK (SP);
140 XPUSHs (sv_2mortal (newSViv (req->result)));
141 222
142 if (req->type == REQ_OPEN) 223 if (req->type == REQ_READDIR)
143 { 224 {
144 /* convert fd to fh */ 225 SV *rv = &PL_sv_undef;
145 SV *fh;
146 226
147 PUTBACK; 227 if (req->result >= 0)
148 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 228 {
149 SPAGAIN; 229 char *buf = req->data2ptr;
230 AV *av = newAV ();
150 231
151 fh = SvREFCNT_inc (POPs); 232 while (req->result)
233 {
234 SV *sv = newSVpv (buf, 0);
152 235
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
153 PUSHMARK (SP); 244 XPUSHs (rv);
154 XPUSHs (sv_2mortal (fh));
155 } 245 }
246 else
247 {
248 XPUSHs (sv_2mortal (newSViv (req->result)));
156 249
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
157 if (SvOK (req->callback)) 266 if (SvOK (req->callback) && !req->cancelled)
158 { 267 {
159 PUTBACK; 268 PUTBACK;
160 call_sv (req->callback, G_VOID | G_EVAL); 269 call_sv (req->callback, G_VOID | G_EVAL);
161 SPAGAIN; 270 SPAGAIN;
271
272 if (SvTRUE (ERRSV))
273 {
274 req_free (req);
275 croak (0);
276 }
162 } 277 }
163 278
164 do_croak = SvTRUE (ERRSV);
165
166 LEAVE; 279 LEAVE;
167
168 if (req->callback)
169 SvREFCNT_dec (req->callback);
170 280
171 errno = errorno; 281 errno = errorno;
172 count++; 282 count++;
173 } 283 }
174 284
175 prv = req;
176 req = req->next;
177 Safefree (prv); 285 req_free (req);
178
179 if (do_croak)
180 croak (0);
181 } 286 }
182 287
183 return count; 288 return count;
184} 289}
185 290
… …
204 309
205 sigprocmask (SIG_SETMASK, &oldsigset, 0); 310 sigprocmask (SIG_SETMASK, &oldsigset, 0);
206} 311}
207 312
208static void 313static void
209send_req (aio_req req) 314req_send (aio_req req)
210{ 315{
316 while (started < wanted && nreqs >= started)
317 start_thread ();
318
211 nreqs++; 319 nreqs++;
212 320
213 pthread_mutex_lock (&reqlock); 321 pthread_mutex_lock (&reqlock);
214 322
215 req->next = 0; 323 req->next = 0;
… …
223 reqe = reqs = req; 331 reqe = reqs = req;
224 332
225 pthread_cond_signal (&reqwait); 333 pthread_cond_signal (&reqwait);
226 pthread_mutex_unlock (&reqlock); 334 pthread_mutex_unlock (&reqlock);
227 335
228 while (nreqs > max_outstanding) 336 if (nreqs > max_outstanding)
337 for (;;)
338 {
339 poll_cb ();
340
341 if (nreqs <= max_outstanding)
342 break;
343
344 poll_wait ();
345 }
346}
347
348static void
349end_thread (void)
350{
351 aio_req req;
352 Newz (0, req, 1, aio_cb);
353 req->type = REQ_QUIT;
354
355 req_send (req);
356}
357
358static void min_parallel (int nthreads)
359{
360 if (wanted < nthreads)
361 wanted = nthreads;
362}
363
364static void max_parallel (int nthreads)
365{
366 int cur = started;
367
368 if (wanted > nthreads)
369 wanted = nthreads;
370
371 while (cur > wanted)
372 {
373 end_thread ();
374 cur--;
375 }
376
377 while (started > wanted)
229 { 378 {
230 poll_wait (); 379 poll_wait ();
231 poll_cb (); 380 poll_cb ();
232 } 381 }
233} 382}
234 383
235static void 384static void create_pipe ()
236end_thread (void)
237{ 385{
238 aio_req req; 386 if (pipe (respipe))
239 New (0, req, 1, aio_cb); 387 croak ("unable to initialize result pipe");
240 req->type = REQ_QUIT;
241 388
242 send_req (req); 389 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
243} 390 croak ("cannot set result pipe to nonblocking mode");
244 391
245 392 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
246static void min_parallel (int nthreads) 393 croak ("cannot set result pipe to nonblocking mode");
247{
248 while (nthreads > started)
249 start_thread ();
250}
251
252static void max_parallel (int nthreads)
253{
254 int cur = started;
255 while (cur > nthreads)
256 {
257 end_thread ();
258 cur--;
259 }
260
261 while (started > nthreads)
262 {
263 poll_wait ();
264 poll_cb ();
265 }
266}
267
268static int fork_started;
269
270static void atfork_prepare (void)
271{
272 pthread_mutex_lock (&frklock);
273
274 fork_started = started;
275
276 for (;;) {
277 while (nreqs)
278 {
279 poll_wait ();
280 poll_cb ();
281 }
282
283 max_parallel (0);
284
285 pthread_mutex_lock (&reqlock);
286
287 if (!nreqs && !started)
288 break;
289
290 pthread_mutex_unlock (&reqlock);
291
292 min_parallel (fork_started);
293 }
294
295 pthread_mutex_lock (&reslock);
296
297 assert (!started);
298 assert (!nreqs);
299 assert (!reqs && !reqe);
300 assert (!ress && !rese);
301}
302
303static void atfork_parent (void)
304{
305 pthread_mutex_unlock (&reslock);
306 min_parallel (fork_started);
307 pthread_mutex_unlock (&reqlock);
308 pthread_mutex_unlock (&frklock);
309}
310
311static void atfork_child (void)
312{
313 reqs = reqe = 0;
314
315 atfork_parent ();
316} 394}
317 395
318/*****************************************************************************/ 396/*****************************************************************************/
319/* work around various missing functions */ 397/* work around various missing functions */
320 398
… …
325/* 403/*
326 * make our pread/pwrite safe against themselves, but not against 404 * make our pread/pwrite safe against themselves, but not against
327 * 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,
328 * but that's your problem, not mine. 406 * but that's your problem, not mine.
329 */ 407 */
330static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 408static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
331 409
332static ssize_t 410static ssize_t
333pread (int fd, void *buf, size_t count, off_t offset) 411pread (int fd, void *buf, size_t count, off_t offset)
334{ 412{
335 ssize_t res; 413 ssize_t res;
336 off_t ooffset; 414 off_t ooffset;
337 415
338 pthread_mutex_lock (&iolock); 416 pthread_mutex_lock (&preadwritelock);
339 ooffset = lseek (fd, 0, SEEK_CUR); 417 ooffset = lseek (fd, 0, SEEK_CUR);
340 lseek (fd, offset, SEEK_SET); 418 lseek (fd, offset, SEEK_SET);
341 res = read (fd, buf, count); 419 res = read (fd, buf, count);
342 lseek (fd, ooffset, SEEK_SET); 420 lseek (fd, ooffset, SEEK_SET);
343 pthread_mutex_unlock (&iolock); 421 pthread_mutex_unlock (&preadwritelock);
344 422
345 return res; 423 return res;
346} 424}
347 425
348static ssize_t 426static ssize_t
349pwrite (int fd, void *buf, size_t count, off_t offset) 427pwrite (int fd, void *buf, size_t count, off_t offset)
350{ 428{
351 ssize_t res; 429 ssize_t res;
352 off_t ooffset; 430 off_t ooffset;
353 431
354 pthread_mutex_lock (&iolock); 432 pthread_mutex_lock (&preadwritelock);
355 ooffset = lseek (fd, 0, SEEK_CUR); 433 ooffset = lseek (fd, 0, SEEK_CUR);
356 lseek (fd, offset, SEEK_SET); 434 lseek (fd, offset, SEEK_SET);
357 res = write (fd, buf, count); 435 res = write (fd, buf, count);
358 lseek (fd, offset, SEEK_SET); 436 lseek (fd, offset, SEEK_SET);
359 pthread_mutex_unlock (&iolock); 437 pthread_mutex_unlock (&preadwritelock);
360 438
361 return res; 439 return res;
362} 440}
363#endif 441#endif
364 442
… …
367#endif 445#endif
368 446
369#if !HAVE_READAHEAD 447#if !HAVE_READAHEAD
370# define readahead aio_readahead 448# define readahead aio_readahead
371 449
372static char readahead_buf[4096];
373
374static ssize_t 450static ssize_t
375readahead (int fd, off_t offset, size_t count) 451readahead (int fd, off_t offset, size_t count)
376{ 452{
453 char readahead_buf[4096];
454
377 while (count > 0) 455 while (count > 0)
378 { 456 {
379 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 457 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
380 458
381 pread (fd, readahead_buf, len, offset); 459 pread (fd, readahead_buf, len, offset);
… …
384 } 462 }
385 463
386 errno = 0; 464 errno = 0;
387} 465}
388#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}
389 655
390/*****************************************************************************/ 656/*****************************************************************************/
391 657
392static void * 658static void *
393aio_proc (void *thr_arg) 659aio_proc (void *thr_arg)
… …
417 683
418 pthread_mutex_unlock (&reqlock); 684 pthread_mutex_unlock (&reqlock);
419 685
420 errno = 0; /* strictly unnecessary */ 686 errno = 0; /* strictly unnecessary */
421 687
422 type = req->type; 688 if (!req->cancelled)
423
424 switch (type) 689 switch (req->type)
425 { 690 {
426 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;
427 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;
428 693
429 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;
430 696
431 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
432 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
433 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
434 700
435 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;
436 case REQ_CLOSE: req->result = close (req->fd); break; 702 case REQ_CLOSE: req->result = close (req->fd); break;
437 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
438 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;
439 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
440 708
441 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
442 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;
443 712
444 case REQ_QUIT: 713 case REQ_QUIT:
445 break; 714 break;
446 715
447 default: 716 default:
448 req->result = ENOSYS; 717 req->result = ENOSYS;
449 break; 718 break;
450 } 719 }
451 720
452 req->errorno = errno; 721 req->errorno = errno;
453 722
454 pthread_mutex_lock (&reslock); 723 pthread_mutex_lock (&reslock);
455 724
… …
473 while (type != REQ_QUIT); 742 while (type != REQ_QUIT);
474 743
475 return 0; 744 return 0;
476} 745}
477 746
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
478#define dREQ \ 804#define dREQ \
479 aio_req req; \ 805 aio_req req; \
480 \ 806 \
481 if (SvOK (callback) && !SvROK (callback)) \ 807 if (SvOK (callback) && !SvROK (callback)) \
482 croak ("clalback must be undef or of reference type"); \ 808 croak ("callback must be undef or of reference type"); \
483 \ 809 \
484 Newz (0, req, 1, aio_cb); \ 810 Newz (0, req, 1, aio_cb); \
485 if (!req) \ 811 if (!req) \
486 croak ("out of memory during aio_req allocation"); \ 812 croak ("out of memory during aio_req allocation"); \
487 \ 813 \
488 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));
489 821
490MODULE = IO::AIO PACKAGE = IO::AIO 822MODULE = IO::AIO PACKAGE = IO::AIO
491 823
492PROTOTYPES: ENABLE 824PROTOTYPES: ENABLE
493 825
494BOOT: 826BOOT:
495{ 827{
496 if (pipe (respipe)) 828 HV *stash = gv_stashpv ("IO::AIO", 1);
497 croak ("unable to initialize result pipe"); 829 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
830 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
831 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
498 832
499 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 833 create_pipe ();
500 croak ("cannot set result pipe to nonblocking mode");
501
502 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
503 croak ("cannot set result pipe to nonblocking mode");
504
505 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
506} 835}
507 836
508void 837void
509min_parallel(nthreads) 838min_parallel (nthreads)
510 int nthreads 839 int nthreads
511 PROTOTYPE: $ 840 PROTOTYPE: $
512 841
513void 842void
514max_parallel(nthreads) 843max_parallel (nthreads)
515 int nthreads 844 int nthreads
516 PROTOTYPE: $ 845 PROTOTYPE: $
517 846
518int 847int
519max_outstanding(nreqs) 848max_outstanding (nreqs)
520 int nreqs 849 int nreqs
521 PROTOTYPE: $ 850 PROTOTYPE: $
522 CODE: 851 CODE:
523 RETVAL = max_outstanding; 852 RETVAL = max_outstanding;
524 max_outstanding = nreqs; 853 max_outstanding = nreqs;
525 854
526void 855void
527aio_open(pathname,flags,mode,callback=&PL_sv_undef) 856aio_open (pathname,flags,mode,callback=&PL_sv_undef)
528 SV * pathname 857 SV * pathname
529 int flags 858 int flags
530 int mode 859 int mode
531 SV * callback 860 SV * callback
532 PROTOTYPE: $$$;$ 861 PROTOTYPE: $$$;$
533 CODE: 862 PPCODE:
534{ 863{
535 dREQ; 864 dREQ;
536 865
537 req->type = REQ_OPEN; 866 req->type = REQ_OPEN;
538 req->data = newSVsv (pathname); 867 req->data = newSVsv (pathname);
539 req->dataptr = SvPVbyte_nolen (req->data); 868 req->dataptr = SvPVbyte_nolen (req->data);
540 req->fd = flags; 869 req->fd = flags;
541 req->mode = mode; 870 req->mode = mode;
542 871
543 send_req (req); 872 REQ_SEND;
544} 873}
545 874
546void 875void
547aio_close(fh,callback=&PL_sv_undef) 876aio_close (fh,callback=&PL_sv_undef)
548 SV * fh 877 SV * fh
549 SV * callback 878 SV * callback
550 PROTOTYPE: $;$ 879 PROTOTYPE: $;$
551 ALIAS: 880 ALIAS:
552 aio_close = REQ_CLOSE 881 aio_close = REQ_CLOSE
553 aio_fsync = REQ_FSYNC 882 aio_fsync = REQ_FSYNC
554 aio_fdatasync = REQ_FDATASYNC 883 aio_fdatasync = REQ_FDATASYNC
555 CODE: 884 PPCODE:
556{ 885{
557 dREQ; 886 dREQ;
558 887
559 req->type = ix; 888 req->type = ix;
560 req->fh = newSVsv (fh); 889 req->fh = newSVsv (fh);
561 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
562 891
563 send_req (req); 892 REQ_SEND (req);
564} 893}
565 894
566void 895void
567aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
568 SV * fh 897 SV * fh
569 UV offset 898 UV offset
570 IV length 899 UV length
571 SV * data 900 SV * data
572 IV dataoffset 901 UV dataoffset
573 SV * callback 902 SV * callback
574 ALIAS: 903 ALIAS:
575 aio_read = REQ_READ 904 aio_read = REQ_READ
576 aio_write = REQ_WRITE 905 aio_write = REQ_WRITE
577 PROTOTYPE: $$$$$;$ 906 PROTOTYPE: $$$$$;$
578 CODE: 907 PPCODE:
579{ 908{
580 aio_req req; 909 aio_req req;
581 STRLEN svlen; 910 STRLEN svlen;
582 char *svptr = SvPVbyte (data, svlen); 911 char *svptr = SvPVbyte (data, svlen);
583 912
… …
614 : IoOFP (sv_2io (fh))); 943 : IoOFP (sv_2io (fh)));
615 req->offset = offset; 944 req->offset = offset;
616 req->length = length; 945 req->length = length;
617 req->data = SvREFCNT_inc (data); 946 req->data = SvREFCNT_inc (data);
618 req->dataptr = (char *)svptr + dataoffset; 947 req->dataptr = (char *)svptr + dataoffset;
619 req->callback = SvREFCNT_inc (callback);
620 948
621 send_req (req); 949 if (!SvREADONLY (data))
950 {
951 SvREADONLY_on (data);
952 req->data2ptr = (void *)data;
953 }
954
955 REQ_SEND;
622 } 956 }
623} 957}
624 958
625void 959void
960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
961 SV * out_fh
962 SV * in_fh
963 UV in_offset
964 UV length
965 SV * callback
966 PROTOTYPE: $$$$;$
967 PPCODE:
968{
969 dREQ;
970
971 req->type = REQ_SENDFILE;
972 req->fh = newSVsv (out_fh);
973 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
974 req->fh2 = newSVsv (in_fh);
975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
976 req->offset = in_offset;
977 req->length = length;
978
979 REQ_SEND;
980}
981
982void
626aio_readahead(fh,offset,length,callback=&PL_sv_undef) 983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
627 SV * fh 984 SV * fh
628 UV offset 985 UV offset
629 IV length 986 IV length
630 SV * callback 987 SV * callback
631 PROTOTYPE: $$$;$ 988 PROTOTYPE: $$$;$
632 CODE: 989 PPCODE:
633{ 990{
634 dREQ; 991 dREQ;
635 992
636 req->type = REQ_READAHEAD; 993 req->type = REQ_READAHEAD;
637 req->fh = newSVsv (fh); 994 req->fh = newSVsv (fh);
638 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
639 req->offset = offset; 996 req->offset = offset;
640 req->length = length; 997 req->length = length;
641 998
642 send_req (req); 999 REQ_SEND;
643} 1000}
644 1001
645void 1002void
646aio_stat(fh_or_path,callback=&PL_sv_undef) 1003aio_stat (fh_or_path,callback=&PL_sv_undef)
647 SV * fh_or_path 1004 SV * fh_or_path
648 SV * callback 1005 SV * callback
649 ALIAS: 1006 ALIAS:
650 aio_stat = REQ_STAT 1007 aio_stat = REQ_STAT
651 aio_lstat = REQ_LSTAT 1008 aio_lstat = REQ_LSTAT
652 CODE: 1009 PPCODE:
653{ 1010{
654 dREQ; 1011 dREQ;
655 1012
656 New (0, req->statdata, 1, Stat_t); 1013 New (0, req->statdata, 1, Stat_t);
657 if (!req->statdata) 1014 if (!req->statdata)
1015 {
1016 req_free (req);
658 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 }
659 1019
660 if (SvPOK (fh_or_path)) 1020 if (SvPOK (fh_or_path))
661 { 1021 {
662 req->type = ix; 1022 req->type = ix;
663 req->data = newSVsv (fh_or_path); 1023 req->data = newSVsv (fh_or_path);
… …
668 req->type = REQ_FSTAT; 1028 req->type = REQ_FSTAT;
669 req->fh = newSVsv (fh_or_path); 1029 req->fh = newSVsv (fh_or_path);
670 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
671 } 1031 }
672 1032
673 send_req (req); 1033 REQ_SEND;
674} 1034}
675 1035
676void 1036void
677aio_unlink(pathname,callback=&PL_sv_undef) 1037aio_unlink (pathname,callback=&PL_sv_undef)
678 SV * pathname 1038 SV * pathname
679 SV * callback 1039 SV * callback
680 ALIAS: 1040 ALIAS:
681 aio_unlink = REQ_UNLINK 1041 aio_unlink = REQ_UNLINK
682 aio_rmdir = REQ_RMDIR 1042 aio_rmdir = REQ_RMDIR
1043 aio_readdir = REQ_READDIR
683 CODE: 1044 PPCODE:
684{ 1045{
685 dREQ; 1046 dREQ;
686 1047
687 req->type = ix; 1048 req->type = ix;
688 req->data = newSVsv (pathname); 1049 req->data = newSVsv (pathname);
689 req->dataptr = SvPVbyte_nolen (req->data); 1050 req->dataptr = SvPVbyte_nolen (req->data);
690 1051
691 send_req (req); 1052 REQ_SEND;
692} 1053}
693 1054
694void 1055void
695aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1056aio_link (oldpath,newpath,callback=&PL_sv_undef)
696 SV * oldpath 1057 SV * oldpath
697 SV * newpath 1058 SV * newpath
698 SV * callback 1059 SV * callback
1060 ALIAS:
1061 aio_link = REQ_LINK
1062 aio_symlink = REQ_SYMLINK
1063 aio_rename = REQ_RENAME
699 CODE: 1064 PPCODE:
700{ 1065{
701 dREQ; 1066 dREQ;
702 1067
703 req->type = REQ_SYMLINK; 1068 req->type = ix;
704 req->fh = newSVsv (oldpath); 1069 req->fh = newSVsv (oldpath);
705 req->data2ptr = SvPVbyte_nolen (req->fh); 1070 req->data2ptr = SvPVbyte_nolen (req->fh);
706 req->data = newSVsv (newpath); 1071 req->data = newSVsv (newpath);
707 req->dataptr = SvPVbyte_nolen (req->data); 1072 req->dataptr = SvPVbyte_nolen (req->data);
708 1073
709 send_req (req); 1074 REQ_SEND;
710} 1075}
711 1076
712void 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
713flush() 1089flush ()
714 PROTOTYPE: 1090 PROTOTYPE:
715 CODE: 1091 CODE:
716 while (nreqs) 1092 while (nreqs)
717 { 1093 {
718 poll_wait (); 1094 poll_wait ();
… …
758 CODE: 1134 CODE:
759 RETVAL = nreqs; 1135 RETVAL = nreqs;
760 OUTPUT: 1136 OUTPUT:
761 RETVAL 1137 RETVAL
762 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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