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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.34 by root, Tue Aug 23 00:03:14 2005 UTC vs.
Revision 1.45 by root, Sun Oct 22 00:19:05 2006 UTC

… …
7 7
8#include "autoconf/config.h" 8#include "autoconf/config.h"
9 9
10#include <pthread.h> 10#include <pthread.h>
11 11
12#include <stddef.h>
13#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
12#include <sys/types.h> 16#include <sys/types.h>
13#include <sys/stat.h> 17#include <sys/stat.h>
14 18#include <limits.h>
15#include <unistd.h> 19#include <unistd.h>
16#include <fcntl.h> 20#include <fcntl.h>
17#include <signal.h> 21#include <signal.h>
18#include <sched.h> 22#include <sched.h>
19 23
… …
23# elif __freebsd 27# elif __freebsd
24# include <sys/socket.h> 28# include <sys/socket.h>
25# include <sys/uio.h> 29# include <sys/uio.h>
26# elif __hpux 30# elif __hpux
27# include <sys/socket.h> 31# include <sys/socket.h>
32# elif __solaris /* not yet */
33# include <sys/sendfile.h>
28# else 34# else
29# error sendfile support requested but not available 35# error sendfile support requested but not available
30# endif 36# endif
31#endif 37#endif
32 38
39/* used for struct dirent, AIX doesn't provide it */
40#ifndef NAME_MAX
41# define NAME_MAX 4096
42#endif
43
33#if __ia64 44#if __ia64
34# define STACKSIZE 65536 45# define STACKSIZE 65536
35#else 46#else
36# define STACKSIZE 4096 47# define STACKSIZE 8192
37#endif 48#endif
38 49
39enum { 50enum {
40 REQ_QUIT, 51 REQ_QUIT,
41 REQ_OPEN, REQ_CLOSE, 52 REQ_OPEN, REQ_CLOSE,
42 REQ_READ, REQ_WRITE, REQ_READAHEAD, 53 REQ_READ, REQ_WRITE, REQ_READAHEAD,
43 REQ_SENDFILE, 54 REQ_SENDFILE,
44 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 55 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
45 REQ_FSYNC, REQ_FDATASYNC, 56 REQ_FSYNC, REQ_FDATASYNC,
46 REQ_UNLINK, REQ_RMDIR, 57 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
47 REQ_SYMLINK, 58 REQ_READDIR,
59 REQ_LINK, REQ_SYMLINK,
60 REQ_SLEEP,
61 REQ_GROUP,
48}; 62};
49 63
64#define AIO_REQ_KLASS "IO::AIO::REQ"
65#define AIO_GRP_KLASS "IO::AIO::GRP"
66
50typedef struct aio_cb { 67typedef struct aio_cb
68{
69 struct aio_cb *grp, *grp_prev, *grp_next;
70
51 struct aio_cb *volatile next; 71 struct aio_cb *volatile next;
52 72
53 int type; 73 SV *self; /* the perl counterpart of this request, if any */
54 74
55 int fd, fd2; 75 SV *data, *callback;
76 SV *fh, *fh2;
77 void *dataptr, *data2ptr;
78 Stat_t *statdata;
56 off_t offset; 79 off_t offset;
57 size_t length; 80 size_t length;
58 ssize_t result; 81 ssize_t result;
82
83 int type;
84 int fd, fd2;
85 int errorno;
86 STRLEN dataoffset;
59 mode_t mode; /* open */ 87 mode_t mode; /* open */
60 int errorno; 88 unsigned char cancelled;
61 SV *data, *callback;
62 SV *fh, *fh2;
63 void *dataptr, *data2ptr;
64 STRLEN dataoffset;
65
66 Stat_t *statdata;
67} aio_cb; 89} aio_cb;
68 90
69typedef aio_cb *aio_req; 91typedef aio_cb *aio_req;
92typedef aio_cb *aio_req_ornot;
93typedef aio_cb *aio_group;
70 94
71static int started, wanted; 95static int started, wanted;
72static volatile int nreqs; 96static volatile int nreqs;
73static int max_outstanding = 1<<30; 97static int max_outstanding = 1<<30;
74static int respipe [2]; 98static int respipe [2];
… …
78static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 102static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
79 103
80static volatile aio_req reqs, reqe; /* queue start, queue end */ 104static volatile aio_req reqs, reqe; /* queue start, queue end */
81static volatile aio_req ress, rese; /* queue start, queue end */ 105static volatile aio_req ress, rese; /* queue start, queue end */
82 106
83static void free_req (aio_req req) 107static void req_free (aio_req req);
84{
85 if (req->data)
86 SvREFCNT_dec (req->data);
87 108
88 if (req->fh) 109/* must be called at most once */
89 SvREFCNT_dec (req->fh); 110static SV *req_sv (aio_req req, const char *klass)
111{
112 req->self = (SV *)newHV ();
113 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
90 114
91 if (req->fh2) 115 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
92 SvREFCNT_dec (req->fh2);
93
94 if (req->statdata)
95 Safefree (req->statdata);
96
97 if (req->callback)
98 SvREFCNT_dec (req->callback);
99
100 Safefree (req);
101} 116}
102 117
103static void 118static aio_req SvAIO_REQ (SV *sv)
104poll_wait () 119{
120 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
121 croak ("object of class " AIO_REQ_KLASS " expected");
122
123 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124
125 return mg ? (aio_req)mg->mg_ptr : 0;
126}
127
128static void poll_wait ()
105{ 129{
106 if (nreqs && !ress) 130 if (nreqs && !ress)
107 { 131 {
108 fd_set rfd; 132 fd_set rfd;
109 FD_ZERO(&rfd); 133 FD_ZERO(&rfd);
… …
111 135
112 select (respipe [0] + 1, &rfd, 0, 0, 0); 136 select (respipe [0] + 1, &rfd, 0, 0, 0);
113 } 137 }
114} 138}
115 139
116static int 140static void req_invoke (aio_req req)
117poll_cb () 141{
142 dSP;
143 int errorno = errno;
144
145 if (req->cancelled || !SvOK (req->callback))
146 return;
147
148 errno = req->errorno;
149
150 ENTER;
151 PUSHMARK (SP);
152
153 switch (req->type)
154 {
155 case REQ_READDIR:
156 {
157 SV *rv = &PL_sv_undef;
158
159 if (req->result >= 0)
160 {
161 char *buf = req->data2ptr;
162 AV *av = newAV ();
163
164 while (req->result)
165 {
166 SV *sv = newSVpv (buf, 0);
167
168 av_push (av, sv);
169 buf += SvCUR (sv) + 1;
170 req->result--;
171 }
172
173 rv = sv_2mortal (newRV_noinc ((SV *)av));
174 }
175
176 XPUSHs (rv);
177 }
178 break;
179
180 case REQ_OPEN:
181 {
182 /* convert fd to fh */
183 SV *fh;
184
185 XPUSHs (sv_2mortal (newSViv (req->result)));
186 PUTBACK;
187 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
188 SPAGAIN;
189
190 fh = SvREFCNT_inc (POPs);
191
192 PUSHMARK (SP);
193 XPUSHs (sv_2mortal (fh));
194 }
195 break;
196
197 case REQ_SLEEP:
198 case REQ_GROUP:
199 break;
200
201 default:
202 XPUSHs (sv_2mortal (newSViv (req->result)));
203 break;
204 }
205
206
207 PUTBACK;
208 call_sv (req->callback, G_VOID | G_EVAL);
209 SPAGAIN;
210
211 if (SvTRUE (ERRSV))
212 {
213 req_free (req);
214 croak (0);
215 }
216
217 LEAVE;
218
219 errno = errorno;
220}
221
222static void req_free (aio_req req)
223{
224 if (req->grp)
225 {
226 aio_req grp = req->grp;
227
228 /* unlink request */
229 req->grp_next->grp_prev = req->grp_prev;
230 req->grp_prev->grp_next = req->grp_next;
231
232 if (grp->grp_next == grp)
233 {
234 req_invoke (grp);
235 req_free (grp);
236 }
237 }
238
239 if (req->self)
240 {
241 sv_unmagic (req->self, PERL_MAGIC_ext);
242 SvREFCNT_dec (req->self);
243 }
244
245 if (req->data)
246 SvREFCNT_dec (req->data);
247
248 if (req->fh)
249 SvREFCNT_dec (req->fh);
250
251 if (req->fh2)
252 SvREFCNT_dec (req->fh2);
253
254 if (req->statdata)
255 Safefree (req->statdata);
256
257 if (req->callback)
258 SvREFCNT_dec (req->callback);
259
260 if (req->type == REQ_READDIR && req->result >= 0)
261 free (req->data2ptr);
262
263 Safefree (req);
264}
265
266static void req_cancel (aio_req req)
267{
268 req->cancelled = 1;
269
270 if (req->type == REQ_GROUP)
271 {
272 aio_req sub;
273
274 for (sub = req->grp_next; sub != req; sub = sub->grp_next)
275 req_cancel (sub);
276 }
277}
278
279static int poll_cb ()
118{ 280{
119 dSP; 281 dSP;
120 int count = 0; 282 int count = 0;
121 int do_croak = 0; 283 int do_croak = 0;
122 aio_req req; 284 aio_req req;
… …
148 310
149 nreqs--; 311 nreqs--;
150 312
151 if (req->type == REQ_QUIT) 313 if (req->type == REQ_QUIT)
152 started--; 314 started--;
315 else if (req->type == REQ_GROUP && req->grp_next != req)
316 continue;
153 else 317 else
154 { 318 {
155 int errorno = errno;
156 errno = req->errorno;
157
158 if (req->type == REQ_READ) 319 if (req->type == REQ_READ)
159 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); 320 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
160 321
161 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) 322 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
162 SvREADONLY_off (req->data); 323 SvREADONLY_off (req->data);
… …
166 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 327 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
167 PL_laststatval = req->result; 328 PL_laststatval = req->result;
168 PL_statcache = *(req->statdata); 329 PL_statcache = *(req->statdata);
169 } 330 }
170 331
171 ENTER; 332 req_invoke (req);
172 PUSHMARK (SP);
173 XPUSHs (sv_2mortal (newSViv (req->result)));
174 333
175 if (req->type == REQ_OPEN)
176 {
177 /* convert fd to fh */
178 SV *fh;
179
180 PUTBACK;
181 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
182 SPAGAIN;
183
184 fh = SvREFCNT_inc (POPs);
185
186 PUSHMARK (SP);
187 XPUSHs (sv_2mortal (fh));
188 }
189
190 if (SvOK (req->callback))
191 {
192 PUTBACK;
193 call_sv (req->callback, G_VOID | G_EVAL);
194 SPAGAIN;
195
196 if (SvTRUE (ERRSV))
197 {
198 free_req (req);
199 croak (0);
200 }
201 }
202
203 LEAVE;
204
205 errno = errorno;
206 count++; 334 count++;
207 } 335 }
208 336
209 free_req (req); 337 req_free (req);
210 } 338 }
211 339
212 return count; 340 return count;
213} 341}
214 342
215static void *aio_proc(void *arg); 343static void *aio_proc(void *arg);
216 344
217static void
218start_thread (void) 345static void start_thread (void)
219{ 346{
220 sigset_t fullsigset, oldsigset; 347 sigset_t fullsigset, oldsigset;
221 pthread_t tid; 348 pthread_t tid;
222 pthread_attr_t attr; 349 pthread_attr_t attr;
223 350
… …
232 started++; 359 started++;
233 360
234 sigprocmask (SIG_SETMASK, &oldsigset, 0); 361 sigprocmask (SIG_SETMASK, &oldsigset, 0);
235} 362}
236 363
237static void 364static void req_send (aio_req req)
238send_req (aio_req req)
239{ 365{
240 while (started < wanted && nreqs >= started) 366 while (started < wanted && nreqs >= started)
241 start_thread (); 367 start_thread ();
242 368
243 nreqs++; 369 nreqs++;
… …
267 393
268 poll_wait (); 394 poll_wait ();
269 } 395 }
270} 396}
271 397
272static void 398static void end_thread (void)
273end_thread (void)
274{ 399{
275 aio_req req; 400 aio_req req;
276 Newz (0, req, 1, aio_cb); 401 Newz (0, req, 1, aio_cb);
277 req->type = REQ_QUIT; 402 req->type = REQ_QUIT;
278 403
279 send_req (req); 404 req_send (req);
280} 405}
281 406
282static void min_parallel (int nthreads) 407static void min_parallel (int nthreads)
283{ 408{
284 if (wanted < nthreads) 409 if (wanted < nthreads)
… …
313 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 438 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
314 croak ("cannot set result pipe to nonblocking mode"); 439 croak ("cannot set result pipe to nonblocking mode");
315 440
316 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 441 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
317 croak ("cannot set result pipe to nonblocking mode"); 442 croak ("cannot set result pipe to nonblocking mode");
318}
319
320static void atfork_prepare (void)
321{
322 pthread_mutex_lock (&reqlock);
323 pthread_mutex_lock (&reslock);
324}
325
326static void atfork_parent (void)
327{
328 pthread_mutex_unlock (&reslock);
329 pthread_mutex_unlock (&reqlock);
330}
331
332static void atfork_child (void)
333{
334 aio_req prv;
335
336 started = 0;
337
338 while (reqs)
339 {
340 prv = reqs;
341 reqs = prv->next;
342 free_req (prv);
343 }
344
345 reqs = reqe = 0;
346
347 while (ress)
348 {
349 prv = ress;
350 ress = prv->next;
351 free_req (prv);
352 }
353
354 ress = rese = 0;
355
356 close (respipe [0]);
357 close (respipe [1]);
358 create_pipe ();
359
360 atfork_parent ();
361} 443}
362 444
363/*****************************************************************************/ 445/*****************************************************************************/
364/* work around various missing functions */ 446/* work around various missing functions */
365 447
… …
370/* 452/*
371 * make our pread/pwrite safe against themselves, but not against 453 * make our pread/pwrite safe against themselves, but not against
372 * normal read/write by using a mutex. slows down execution a lot, 454 * normal read/write by using a mutex. slows down execution a lot,
373 * but that's your problem, not mine. 455 * but that's your problem, not mine.
374 */ 456 */
375static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 457static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
376 458
377static ssize_t 459static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
378pread (int fd, void *buf, size_t count, off_t offset)
379{ 460{
380 ssize_t res; 461 ssize_t res;
381 off_t ooffset; 462 off_t ooffset;
382 463
383 pthread_mutex_lock (&iolock); 464 pthread_mutex_lock (&preadwritelock);
384 ooffset = lseek (fd, 0, SEEK_CUR); 465 ooffset = lseek (fd, 0, SEEK_CUR);
385 lseek (fd, offset, SEEK_SET); 466 lseek (fd, offset, SEEK_SET);
386 res = read (fd, buf, count); 467 res = read (fd, buf, count);
387 lseek (fd, ooffset, SEEK_SET); 468 lseek (fd, ooffset, SEEK_SET);
388 pthread_mutex_unlock (&iolock); 469 pthread_mutex_unlock (&preadwritelock);
389 470
390 return res; 471 return res;
391} 472}
392 473
393static ssize_t
394pwrite (int fd, void *buf, size_t count, off_t offset) 474static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
395{ 475{
396 ssize_t res; 476 ssize_t res;
397 off_t ooffset; 477 off_t ooffset;
398 478
399 pthread_mutex_lock (&iolock); 479 pthread_mutex_lock (&preadwritelock);
400 ooffset = lseek (fd, 0, SEEK_CUR); 480 ooffset = lseek (fd, 0, SEEK_CUR);
401 lseek (fd, offset, SEEK_SET); 481 lseek (fd, offset, SEEK_SET);
402 res = write (fd, buf, count); 482 res = write (fd, buf, count);
403 lseek (fd, offset, SEEK_SET); 483 lseek (fd, offset, SEEK_SET);
404 pthread_mutex_unlock (&iolock); 484 pthread_mutex_unlock (&preadwritelock);
405 485
406 return res; 486 return res;
407} 487}
408#endif 488#endif
409 489
… …
412#endif 492#endif
413 493
414#if !HAVE_READAHEAD 494#if !HAVE_READAHEAD
415# define readahead aio_readahead 495# define readahead aio_readahead
416 496
497static ssize_t readahead (int fd, off_t offset, size_t count)
498{
417static char readahead_buf[4096]; 499 char readahead_buf[4096];
418 500
419static ssize_t
420readahead (int fd, off_t offset, size_t count)
421{
422 while (count > 0) 501 while (count > 0)
423 { 502 {
424 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 503 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
425 504
426 pread (fd, readahead_buf, len, offset); 505 pread (fd, readahead_buf, len, offset);
… …
430 509
431 errno = 0; 510 errno = 0;
432} 511}
433#endif 512#endif
434 513
514#if !HAVE_READDIR_R
515# define readdir_r aio_readdir_r
516
517static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
518
519static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
520{
521 struct dirent *e;
522 int errorno;
523
524 pthread_mutex_lock (&readdirlock);
525
526 e = readdir (dirp);
527 errorno = errno;
528
529 if (e)
530 {
531 *res = ent;
532 strcpy (ent->d_name, e->d_name);
533 }
534 else
535 *res = 0;
536
537 pthread_mutex_unlock (&readdirlock);
538
539 errno = errorno;
540 return e ? 0 : -1;
541}
542#endif
543
435/* sendfile always needs emulation */ 544/* sendfile always needs emulation */
436static ssize_t
437sendfile_ (int ofd, int ifd, off_t offset, size_t count) 545static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
438{ 546{
439 ssize_t res; 547 ssize_t res;
440 548
441 if (!count) 549 if (!count)
442 return 0; 550 return 0;
443 551
552#if HAVE_SENDFILE
444#if __linux 553# if __linux
445 res = sendfile (ofd, ifd, &offset, count); 554 res = sendfile (ofd, ifd, &offset, count);
446 555
447#elif __freebsd 556# elif __freebsd
448 /* 557 /*
449 * Of course, the freebsd sendfile is a dire hack with no thoughts 558 * Of course, the freebsd sendfile is a dire hack with no thoughts
450 * wasted on making it similar to other i/o functions. 559 * wasted on making it similar to other I/O functions.
451 */ 560 */
452 { 561 {
453 off_t sbytes; 562 off_t sbytes;
454 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 563 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
455 564
456 if (!res && errno == EAGAIN) 565 if (res < 0 && sbytes)
457 /* maybe on others, too, as usual, the manpage leaves you guessing */ 566 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
458 res = sbytes; 567 res = sbytes;
459 } 568 }
460 569
461#elif __hpux 570# elif __hpux
462 res = sendfile (ofd, ifd, offset, count, 0, 0); 571 res = sendfile (ofd, ifd, offset, count, 0, 0);
463 572
573# elif __solaris
574 {
575 struct sendfilevec vec;
576 size_t sbytes;
577
578 vec.sfv_fd = ifd;
579 vec.sfv_flag = 0;
580 vec.sfv_off = offset;
581 vec.sfv_len = count;
582
583 res = sendfilev (ofd, &vec, 1, &sbytes);
584
585 if (res < 0 && sbytes)
586 res = sbytes;
587 }
588
589# endif
464#else 590#else
465 res = -1; 591 res = -1;
466 errno = ENOSYS; 592 errno = ENOSYS;
467#endif 593#endif
468 594
595 if (res < 0
469 if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK)) 596 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
597#if __solaris
598 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
599#endif
600 )
601 )
470 { 602 {
471 /* emulate sendfile. this is a major pain in the ass */ 603 /* emulate sendfile. this is a major pain in the ass */
472 char *buf = malloc (4096); 604 char buf[4096];
473 res = 0; 605 res = 0;
474 606
475 for (;;) 607 while (count)
476 { 608 {
477 ssize_t cnt; 609 ssize_t cnt;
478 610
479 cnt = pread (ifd, buf, 4096, offset); 611 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
480 612
481 if (cnt <= 0) 613 if (cnt <= 0)
482 { 614 {
483 if (cnt && !res) res = -1; 615 if (cnt && !res) res = -1;
484 break; 616 break;
485 } 617 }
486 618
487 cnt = write (ofd, buf, cnt); 619 cnt = write (ofd, buf, cnt);
488 620
489 if (cnt <= 0) 621 if (cnt <= 0)
490 { 622 {
491 if (cnt && !res) res = -1; 623 if (cnt && !res) res = -1;
492 break; 624 break;
493 } 625 }
494 626
495 offset += cnt; 627 offset += cnt;
496 res += cnt; 628 res += cnt;
629 count -= cnt;
497 } 630 }
498
499 {
500 int errorno = errno;
501 free (buf);
502 errno = errorno;
503 }
504 } 631 }
505 632
506 return res; 633 return res;
634}
635
636/* read a full directory */
637static int scandir_ (const char *path, void **namesp)
638{
639 DIR *dirp = opendir (path);
640 union
641 {
642 struct dirent d;
643 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644 } u;
645 struct dirent *entp;
646 char *name, *names;
647 int memlen = 4096;
648 int memofs = 0;
649 int res = 0;
650 int errorno;
651
652 if (!dirp)
653 return -1;
654
655 names = malloc (memlen);
656
657 for (;;)
658 {
659 errno = 0, readdir_r (dirp, &u.d, &entp);
660
661 if (!entp)
662 break;
663
664 name = entp->d_name;
665
666 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
667 {
668 int len = strlen (name) + 1;
669
670 res++;
671
672 while (memofs + len > memlen)
673 {
674 memlen *= 2;
675 names = realloc (names, memlen);
676 if (!names)
677 break;
678 }
679
680 memcpy (names + memofs, name, len);
681 memofs += len;
682 }
683 }
684
685 errorno = errno;
686 closedir (dirp);
687
688 if (errorno)
689 {
690 free (names);
691 errno = errorno;
692 res = -1;
693 }
694
695 *namesp = (void *)names;
696 return res;
507} 697}
508 698
509/*****************************************************************************/ 699/*****************************************************************************/
510 700
511static void *
512aio_proc (void *thr_arg) 701static void *aio_proc (void *thr_arg)
513{ 702{
514 aio_req req; 703 aio_req req;
515 int type; 704 int type;
516 705
517 do 706 do
… …
536 725
537 pthread_mutex_unlock (&reqlock); 726 pthread_mutex_unlock (&reqlock);
538 727
539 errno = 0; /* strictly unnecessary */ 728 errno = 0; /* strictly unnecessary */
540 729
541 type = req->type; 730 if (!req->cancelled)
542
543 switch (type) 731 switch (req->type)
544 { 732 {
545 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 733 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
546 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; 734 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
547 735
548 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 736 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
549 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; 737 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
550 738
551 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 739 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
552 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 740 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
553 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 741 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
554 742
555 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 743 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
556 case REQ_CLOSE: req->result = close (req->fd); break; 744 case REQ_CLOSE: req->result = close (req->fd); break;
557 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 745 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
558 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 746 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
747 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
748 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
559 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 749 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
560 750
561 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 751 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
562 case REQ_FSYNC: req->result = fsync (req->fd); break; 752 case REQ_FSYNC: req->result = fsync (req->fd); break;
753 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
563 754
755 case REQ_SLEEP:
756 {
757 struct timeval tv;
758
759 tv.tv_sec = req->fd;
760 tv.tv_usec = req->fd2;
761
762 req->result = select (0, 0, 0, 0, &tv);
763 }
764
564 case REQ_QUIT: 765 case REQ_QUIT:
565 break; 766 break;
566 767
567 default: 768 default:
568 req->result = ENOSYS; 769 req->result = ENOSYS;
569 break; 770 break;
570 } 771 }
571 772
572 req->errorno = errno; 773 req->errorno = errno;
573 774
574 pthread_mutex_lock (&reslock); 775 pthread_mutex_lock (&reslock);
575 776
… …
593 while (type != REQ_QUIT); 794 while (type != REQ_QUIT);
594 795
595 return 0; 796 return 0;
596} 797}
597 798
799/*****************************************************************************/
800
801static void atfork_prepare (void)
802{
803 pthread_mutex_lock (&reqlock);
804 pthread_mutex_lock (&reslock);
805#if !HAVE_PREADWRITE
806 pthread_mutex_lock (&preadwritelock);
807#endif
808#if !HAVE_READDIR_R
809 pthread_mutex_lock (&readdirlock);
810#endif
811}
812
813static void atfork_parent (void)
814{
815#if !HAVE_READDIR_R
816 pthread_mutex_unlock (&readdirlock);
817#endif
818#if !HAVE_PREADWRITE
819 pthread_mutex_unlock (&preadwritelock);
820#endif
821 pthread_mutex_unlock (&reslock);
822 pthread_mutex_unlock (&reqlock);
823}
824
825static void atfork_child (void)
826{
827 aio_req prv;
828
829 started = 0;
830
831 while (reqs)
832 {
833 prv = reqs;
834 reqs = prv->next;
835 req_free (prv);
836 }
837
838 reqs = reqe = 0;
839
840 while (ress)
841 {
842 prv = ress;
843 ress = prv->next;
844 req_free (prv);
845 }
846
847 ress = rese = 0;
848
849 close (respipe [0]);
850 close (respipe [1]);
851 create_pipe ();
852
853 atfork_parent ();
854}
855
598#define dREQ \ 856#define dREQ \
599 aio_req req; \ 857 aio_req req; \
600 \ 858 \
601 if (SvOK (callback) && !SvROK (callback)) \ 859 if (SvOK (callback) && !SvROK (callback)) \
602 croak ("clalback must be undef or of reference type"); \ 860 croak ("callback must be undef or of reference type"); \
603 \ 861 \
604 Newz (0, req, 1, aio_cb); \ 862 Newz (0, req, 1, aio_cb); \
605 if (!req) \ 863 if (!req) \
606 croak ("out of memory during aio_req allocation"); \ 864 croak ("out of memory during aio_req allocation"); \
607 \ 865 \
608 req->callback = newSVsv (callback); 866 req->callback = newSVsv (callback)
867
868#define REQ_SEND \
869 req_send (req); \
870 \
871 if (GIMME_V != G_VOID) \
872 XPUSHs (req_sv (req, AIO_REQ_KLASS));
609 873
610MODULE = IO::AIO PACKAGE = IO::AIO 874MODULE = IO::AIO PACKAGE = IO::AIO
611 875
612PROTOTYPES: ENABLE 876PROTOTYPES: ENABLE
613 877
614BOOT: 878BOOT:
615{ 879{
880 HV *stash = gv_stashpv ("IO::AIO", 1);
881 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
882 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
883 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
884
616 create_pipe (); 885 create_pipe ();
617 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 886 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
618} 887}
619 888
620void 889void
621min_parallel(nthreads) 890min_parallel (nthreads)
622 int nthreads 891 int nthreads
623 PROTOTYPE: $ 892 PROTOTYPE: $
624 893
625void 894void
626max_parallel(nthreads) 895max_parallel (nthreads)
627 int nthreads 896 int nthreads
628 PROTOTYPE: $ 897 PROTOTYPE: $
629 898
630int 899int
631max_outstanding(nreqs) 900max_outstanding (nreqs)
632 int nreqs 901 int nreqs
633 PROTOTYPE: $ 902 PROTOTYPE: $
634 CODE: 903 CODE:
635 RETVAL = max_outstanding; 904 RETVAL = max_outstanding;
636 max_outstanding = nreqs; 905 max_outstanding = nreqs;
637 906
638void 907void
639aio_open(pathname,flags,mode,callback=&PL_sv_undef) 908aio_open (pathname,flags,mode,callback=&PL_sv_undef)
640 SV * pathname 909 SV * pathname
641 int flags 910 int flags
642 int mode 911 int mode
643 SV * callback 912 SV * callback
644 PROTOTYPE: $$$;$ 913 PROTOTYPE: $$$;$
645 CODE: 914 PPCODE:
646{ 915{
647 dREQ; 916 dREQ;
648 917
649 req->type = REQ_OPEN; 918 req->type = REQ_OPEN;
650 req->data = newSVsv (pathname); 919 req->data = newSVsv (pathname);
651 req->dataptr = SvPVbyte_nolen (req->data); 920 req->dataptr = SvPVbyte_nolen (req->data);
652 req->fd = flags; 921 req->fd = flags;
653 req->mode = mode; 922 req->mode = mode;
654 923
655 send_req (req); 924 REQ_SEND;
656} 925}
657 926
658void 927void
659aio_close(fh,callback=&PL_sv_undef) 928aio_close (fh,callback=&PL_sv_undef)
660 SV * fh 929 SV * fh
661 SV * callback 930 SV * callback
662 PROTOTYPE: $;$ 931 PROTOTYPE: $;$
663 ALIAS: 932 ALIAS:
664 aio_close = REQ_CLOSE 933 aio_close = REQ_CLOSE
665 aio_fsync = REQ_FSYNC 934 aio_fsync = REQ_FSYNC
666 aio_fdatasync = REQ_FDATASYNC 935 aio_fdatasync = REQ_FDATASYNC
667 CODE: 936 PPCODE:
668{ 937{
669 dREQ; 938 dREQ;
670 939
671 req->type = ix; 940 req->type = ix;
672 req->fh = newSVsv (fh); 941 req->fh = newSVsv (fh);
673 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 942 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
674 943
675 send_req (req); 944 REQ_SEND (req);
676} 945}
677 946
678void 947void
679aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 948aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
680 SV * fh 949 SV * fh
681 UV offset 950 UV offset
682 UV length 951 UV length
683 SV * data 952 SV * data
684 UV dataoffset 953 UV dataoffset
685 SV * callback 954 SV * callback
686 ALIAS: 955 ALIAS:
687 aio_read = REQ_READ 956 aio_read = REQ_READ
688 aio_write = REQ_WRITE 957 aio_write = REQ_WRITE
689 PROTOTYPE: $$$$$;$ 958 PROTOTYPE: $$$$$;$
690 CODE: 959 PPCODE:
691{ 960{
692 aio_req req; 961 aio_req req;
693 STRLEN svlen; 962 STRLEN svlen;
694 char *svptr = SvPVbyte (data, svlen); 963 char *svptr = SvPVbyte (data, svlen);
695 964
… …
733 { 1002 {
734 SvREADONLY_on (data); 1003 SvREADONLY_on (data);
735 req->data2ptr = (void *)data; 1004 req->data2ptr = (void *)data;
736 } 1005 }
737 1006
738 send_req (req); 1007 REQ_SEND;
739 } 1008 }
740} 1009}
741 1010
742void 1011void
743aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1012aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
744 SV * out_fh 1013 SV * out_fh
745 SV * in_fh 1014 SV * in_fh
746 UV in_offset 1015 UV in_offset
747 UV length 1016 UV length
748 SV * callback 1017 SV * callback
749 PROTOTYPE: $$$$;$ 1018 PROTOTYPE: $$$$;$
750 CODE: 1019 PPCODE:
751{ 1020{
752 dREQ; 1021 dREQ;
753 1022
754 req->type = REQ_SENDFILE; 1023 req->type = REQ_SENDFILE;
755 req->fh = newSVsv (out_fh); 1024 req->fh = newSVsv (out_fh);
… …
757 req->fh2 = newSVsv (in_fh); 1026 req->fh2 = newSVsv (in_fh);
758 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1027 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
759 req->offset = in_offset; 1028 req->offset = in_offset;
760 req->length = length; 1029 req->length = length;
761 1030
762 send_req (req); 1031 REQ_SEND;
763} 1032}
764 1033
765void 1034void
766aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1035aio_readahead (fh,offset,length,callback=&PL_sv_undef)
767 SV * fh 1036 SV * fh
768 UV offset 1037 UV offset
769 IV length 1038 IV length
770 SV * callback 1039 SV * callback
771 PROTOTYPE: $$$;$ 1040 PROTOTYPE: $$$;$
772 CODE: 1041 PPCODE:
773{ 1042{
774 dREQ; 1043 dREQ;
775 1044
776 req->type = REQ_READAHEAD; 1045 req->type = REQ_READAHEAD;
777 req->fh = newSVsv (fh); 1046 req->fh = newSVsv (fh);
778 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1047 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
779 req->offset = offset; 1048 req->offset = offset;
780 req->length = length; 1049 req->length = length;
781 1050
782 send_req (req); 1051 REQ_SEND;
783} 1052}
784 1053
785void 1054void
786aio_stat(fh_or_path,callback=&PL_sv_undef) 1055aio_stat (fh_or_path,callback=&PL_sv_undef)
787 SV * fh_or_path 1056 SV * fh_or_path
788 SV * callback 1057 SV * callback
789 ALIAS: 1058 ALIAS:
790 aio_stat = REQ_STAT 1059 aio_stat = REQ_STAT
791 aio_lstat = REQ_LSTAT 1060 aio_lstat = REQ_LSTAT
792 CODE: 1061 PPCODE:
793{ 1062{
794 dREQ; 1063 dREQ;
795 1064
796 New (0, req->statdata, 1, Stat_t); 1065 New (0, req->statdata, 1, Stat_t);
797 if (!req->statdata) 1066 if (!req->statdata)
798 { 1067 {
799 free_req (req); 1068 req_free (req);
800 croak ("out of memory during aio_req->statdata allocation"); 1069 croak ("out of memory during aio_req->statdata allocation");
801 } 1070 }
802 1071
803 if (SvPOK (fh_or_path)) 1072 if (SvPOK (fh_or_path))
804 { 1073 {
… …
811 req->type = REQ_FSTAT; 1080 req->type = REQ_FSTAT;
812 req->fh = newSVsv (fh_or_path); 1081 req->fh = newSVsv (fh_or_path);
813 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1082 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
814 } 1083 }
815 1084
816 send_req (req); 1085 REQ_SEND;
817} 1086}
818 1087
819void 1088void
820aio_unlink(pathname,callback=&PL_sv_undef) 1089aio_unlink (pathname,callback=&PL_sv_undef)
821 SV * pathname 1090 SV * pathname
822 SV * callback 1091 SV * callback
823 ALIAS: 1092 ALIAS:
824 aio_unlink = REQ_UNLINK 1093 aio_unlink = REQ_UNLINK
825 aio_rmdir = REQ_RMDIR 1094 aio_rmdir = REQ_RMDIR
1095 aio_readdir = REQ_READDIR
826 CODE: 1096 PPCODE:
827{ 1097{
828 dREQ; 1098 dREQ;
829 1099
830 req->type = ix; 1100 req->type = ix;
831 req->data = newSVsv (pathname); 1101 req->data = newSVsv (pathname);
832 req->dataptr = SvPVbyte_nolen (req->data); 1102 req->dataptr = SvPVbyte_nolen (req->data);
833 1103
834 send_req (req); 1104 REQ_SEND;
835} 1105}
836 1106
837void 1107void
838aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1108aio_link (oldpath,newpath,callback=&PL_sv_undef)
839 SV * oldpath 1109 SV * oldpath
840 SV * newpath 1110 SV * newpath
841 SV * callback 1111 SV * callback
1112 ALIAS:
1113 aio_link = REQ_LINK
1114 aio_symlink = REQ_SYMLINK
1115 aio_rename = REQ_RENAME
842 CODE: 1116 PPCODE:
843{ 1117{
844 dREQ; 1118 dREQ;
845 1119
846 req->type = REQ_SYMLINK; 1120 req->type = ix;
847 req->fh = newSVsv (oldpath); 1121 req->fh = newSVsv (oldpath);
848 req->data2ptr = SvPVbyte_nolen (req->fh); 1122 req->data2ptr = SvPVbyte_nolen (req->fh);
849 req->data = newSVsv (newpath); 1123 req->data = newSVsv (newpath);
850 req->dataptr = SvPVbyte_nolen (req->data); 1124 req->dataptr = SvPVbyte_nolen (req->data);
851 1125
852 send_req (req); 1126 REQ_SEND;
853} 1127}
854 1128
855void 1129void
1130aio_sleep (delay,callback=&PL_sv_undef)
1131 double delay
1132 SV * callback
1133 PPCODE:
1134{
1135 dREQ;
1136
1137 req->type = REQ_SLEEP;
1138 req->fd = delay < 0. ? 0 : delay;
1139 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1140
1141 REQ_SEND;
1142}
1143
1144void
1145aio_group (callback=&PL_sv_undef)
1146 SV * callback
1147 PROTOTYPE: ;&
1148 PPCODE:
1149{
1150 dREQ;
1151 req->type = REQ_GROUP;
1152 req->grp_next = req;
1153 req->grp_prev = req;
1154
1155 req_send (req);
1156 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1157}
1158
1159void
856flush() 1160flush ()
857 PROTOTYPE: 1161 PROTOTYPE:
858 CODE: 1162 CODE:
859 while (nreqs) 1163 while (nreqs)
860 { 1164 {
861 poll_wait (); 1165 poll_wait ();
… …
901 CODE: 1205 CODE:
902 RETVAL = nreqs; 1206 RETVAL = nreqs;
903 OUTPUT: 1207 OUTPUT:
904 RETVAL 1208 RETVAL
905 1209
1210MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211
1212void
1213cancel (aio_req_ornot req)
1214 PROTOTYPE:
1215 CODE:
1216 req_cancel (req);
1217
1218MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219
1220void
1221add (aio_req grp, ...)
1222 PROTOTYPE: $;@
1223 PPCODE:
1224{
1225 int i;
1226
1227 for (i = 1; i < items; ++i )
1228 {
1229 aio_req req = SvAIO_REQ (ST (i));
1230
1231 req->grp_prev = grp;
1232 req->grp_next = grp->grp_next;
1233 grp->grp_next->grp_prev = req;
1234 grp->grp_next = req;
1235
1236 req->grp = grp;
1237
1238 if (GIMME_V != G_VOID)
1239 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1240 }
1241}
1242

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