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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 1.42 by root, Fri Jul 21 07:35:31 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,
38}; 58};
39 59
40typedef struct aio_cb { 60typedef struct aio_cb {
41 struct aio_cb *volatile next; 61 struct aio_cb *volatile next;
42 62
43 int type; 63 int type;
44 64
65 /* should receive a cleanup, with unions */
45 int fd; 66 int fd, fd2;
46 off_t offset; 67 off_t offset;
47 size_t length; 68 size_t length;
48 ssize_t result; 69 ssize_t result;
49 mode_t mode; /* open */ 70 mode_t mode; /* open */
50 int errorno; 71 int errorno;
51 SV *data, *callback, *fh; 72 SV *data, *callback;
73 SV *fh, *fh2;
52 void *dataptr, *data2ptr; 74 void *dataptr, *data2ptr;
53 STRLEN dataoffset; 75 STRLEN dataoffset;
54 76
55 Stat_t *statdata; 77 Stat_t *statdata;
56} aio_cb; 78} aio_cb;
57 79
58typedef aio_cb *aio_req; 80typedef aio_cb *aio_req;
59 81
60static int started; 82static int started, wanted;
61static volatile int nreqs; 83static volatile int nreqs;
62static int max_outstanding = 1<<30; 84static int max_outstanding = 1<<30;
63static int respipe [2]; 85static int respipe [2];
64 86
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 87static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; 88static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER;
68static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 89static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
69 90
70static volatile aio_req reqs, reqe; /* queue start, queue end */ 91static volatile aio_req reqs, reqe; /* queue start, queue end */
71static volatile aio_req ress, rese; /* queue start, queue end */ 92static volatile aio_req ress, rese; /* queue start, queue end */
72 93
… …
76 SvREFCNT_dec (req->data); 97 SvREFCNT_dec (req->data);
77 98
78 if (req->fh) 99 if (req->fh)
79 SvREFCNT_dec (req->fh); 100 SvREFCNT_dec (req->fh);
80 101
81 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 102 if (req->fh2)
103 SvREFCNT_dec (req->fh2);
104
105 if (req->statdata)
82 Safefree (req->statdata); 106 Safefree (req->statdata);
83 107
84 if (req->callback) 108 if (req->callback)
85 SvREFCNT_dec (req->callback); 109 SvREFCNT_dec (req->callback);
110
111 if (req->type == REQ_READDIR && req->result >= 0)
112 free (req->data2ptr);
86 113
87 Safefree (req); 114 Safefree (req);
88} 115}
89 116
90static void 117static void
… …
104poll_cb () 131poll_cb ()
105{ 132{
106 dSP; 133 dSP;
107 int count = 0; 134 int count = 0;
108 int do_croak = 0; 135 int do_croak = 0;
109 aio_req req, prv; 136 aio_req req;
110 137
138 for (;;)
139 {
111 pthread_mutex_lock (&reslock); 140 pthread_mutex_lock (&reslock);
141 req = ress;
112 142
113 { 143 if (req)
144 {
145 ress = req->next;
146
147 if (!ress)
148 {
114 /* read any signals sent by the worker threads */ 149 /* read any signals sent by the worker threads */
115 char buf [32]; 150 char buf [32];
116 while (read (respipe [0], buf, 32) == 32) 151 while (read (respipe [0], buf, 32) == 32)
152 ;
153
154 rese = 0;
155 }
117 ; 156 }
118 }
119 157
120 req = ress;
121 ress = rese = 0;
122
123 pthread_mutex_unlock (&reslock); 158 pthread_mutex_unlock (&reslock);
124 159
125 while (req) 160 if (!req)
126 { 161 break;
162
127 nreqs--; 163 nreqs--;
128 164
129 if (req->type == REQ_QUIT) 165 if (req->type == REQ_QUIT)
130 started--; 166 started--;
131 else 167 else
132 { 168 {
133 int errorno = errno; 169 int errorno = errno;
134 errno = req->errorno; 170 errno = req->errorno;
135 171
136 if (req->type == REQ_READ) 172 if (req->type == REQ_READ)
137 SvCUR_set (req->data, req->dataoffset 173 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
138 + req->result > 0 ? req->result : 0);
139 174
140 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) 175 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176 SvREADONLY_off (req->data);
177
178 if (req->statdata)
141 { 179 {
142 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 180 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
143 PL_laststatval = req->result; 181 PL_laststatval = req->result;
144 PL_statcache = *(req->statdata); 182 PL_statcache = *(req->statdata);
145 } 183 }
146 184
147 ENTER; 185 ENTER;
148 PUSHMARK (SP); 186 PUSHMARK (SP);
149 XPUSHs (sv_2mortal (newSViv (req->result)));
150 187
151 if (req->type == REQ_OPEN) 188 if (req->type == REQ_READDIR)
152 { 189 {
190 SV *rv = &PL_sv_undef;
191
192 if (req->result >= 0)
193 {
194 char *buf = req->data2ptr;
195 AV *av = newAV ();
196
197 while (req->result)
198 {
199 SV *sv = newSVpv (buf, 0);
200
201 av_push (av, sv);
202 buf += SvCUR (sv) + 1;
203 req->result--;
204 }
205
206 rv = sv_2mortal (newRV_noinc ((SV *)av));
207 }
208
209 XPUSHs (rv);
210 }
211 else
212 {
213 XPUSHs (sv_2mortal (newSViv (req->result)));
214
215 if (req->type == REQ_OPEN)
216 {
153 /* convert fd to fh */ 217 /* convert fd to fh */
154 SV *fh; 218 SV *fh;
155 219
156 PUTBACK; 220 PUTBACK;
157 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 221 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
158 SPAGAIN; 222 SPAGAIN;
159 223
160 fh = SvREFCNT_inc (POPs); 224 fh = SvREFCNT_inc (POPs);
161 225
162 PUSHMARK (SP); 226 PUSHMARK (SP);
163 XPUSHs (sv_2mortal (fh)); 227 XPUSHs (sv_2mortal (fh));
228 }
164 } 229 }
165 230
166 if (SvOK (req->callback)) 231 if (SvOK (req->callback))
167 { 232 {
168 PUTBACK; 233 PUTBACK;
169 call_sv (req->callback, G_VOID | G_EVAL); 234 call_sv (req->callback, G_VOID | G_EVAL);
170 SPAGAIN; 235 SPAGAIN;
236
237 if (SvTRUE (ERRSV))
238 {
239 free_req (req);
240 croak (0);
241 }
171 } 242 }
172 243
173 LEAVE; 244 LEAVE;
174 245
175 do_croak = SvTRUE (ERRSV);
176
177 errno = errorno; 246 errno = errorno;
178 count++; 247 count++;
179 } 248 }
180 249
181 prv = req;
182 req = req->next;
183 free_req (prv); 250 free_req (req);
184
185 if (do_croak)
186 croak (0);
187 } 251 }
188 252
189 return count; 253 return count;
190} 254}
191 255
… …
212} 276}
213 277
214static void 278static void
215send_req (aio_req req) 279send_req (aio_req req)
216{ 280{
281 while (started < wanted && nreqs >= started)
282 start_thread ();
283
217 nreqs++; 284 nreqs++;
218 285
219 pthread_mutex_lock (&reqlock); 286 pthread_mutex_lock (&reqlock);
220 287
221 req->next = 0; 288 req->next = 0;
… …
229 reqe = reqs = req; 296 reqe = reqs = req;
230 297
231 pthread_cond_signal (&reqwait); 298 pthread_cond_signal (&reqwait);
232 pthread_mutex_unlock (&reqlock); 299 pthread_mutex_unlock (&reqlock);
233 300
234 while (nreqs > max_outstanding) 301 if (nreqs > max_outstanding)
302 for (;;)
235 { 303 {
304 poll_cb ();
305
306 if (nreqs <= max_outstanding)
307 break;
308
236 poll_wait (); 309 poll_wait ();
237 poll_cb ();
238 } 310 }
239} 311}
240 312
241static void 313static void
242end_thread (void) 314end_thread (void)
243{ 315{
… …
246 req->type = REQ_QUIT; 318 req->type = REQ_QUIT;
247 319
248 send_req (req); 320 send_req (req);
249} 321}
250 322
251
252static void min_parallel (int nthreads) 323static void min_parallel (int nthreads)
253{ 324{
254 while (nthreads > started) 325 if (wanted < nthreads)
255 start_thread (); 326 wanted = nthreads;
256} 327}
257 328
258static void max_parallel (int nthreads) 329static void max_parallel (int nthreads)
259{ 330{
260 int cur = started; 331 int cur = started;
332
333 if (wanted > nthreads)
334 wanted = nthreads;
335
261 while (cur > nthreads) 336 while (cur > wanted)
262 { 337 {
263 end_thread (); 338 end_thread ();
264 cur--; 339 cur--;
265 } 340 }
266 341
267 while (started > nthreads) 342 while (started > wanted)
268 { 343 {
269 poll_wait (); 344 poll_wait ();
270 poll_cb (); 345 poll_cb ();
271 } 346 }
272} 347}
… …
279 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 354 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
280 croak ("cannot set result pipe to nonblocking mode"); 355 croak ("cannot set result pipe to nonblocking mode");
281 356
282 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 357 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
283 croak ("cannot set result pipe to nonblocking mode"); 358 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} 359}
330 360
331/*****************************************************************************/ 361/*****************************************************************************/
332/* work around various missing functions */ 362/* work around various missing functions */
333 363
… …
338/* 368/*
339 * make our pread/pwrite safe against themselves, but not against 369 * make our pread/pwrite safe against themselves, but not against
340 * normal read/write by using a mutex. slows down execution a lot, 370 * normal read/write by using a mutex. slows down execution a lot,
341 * but that's your problem, not mine. 371 * but that's your problem, not mine.
342 */ 372 */
343static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 373static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
344 374
345static ssize_t 375static ssize_t
346pread (int fd, void *buf, size_t count, off_t offset) 376pread (int fd, void *buf, size_t count, off_t offset)
347{ 377{
348 ssize_t res; 378 ssize_t res;
349 off_t ooffset; 379 off_t ooffset;
350 380
351 pthread_mutex_lock (&iolock); 381 pthread_mutex_lock (&preadwritelock);
352 ooffset = lseek (fd, 0, SEEK_CUR); 382 ooffset = lseek (fd, 0, SEEK_CUR);
353 lseek (fd, offset, SEEK_SET); 383 lseek (fd, offset, SEEK_SET);
354 res = read (fd, buf, count); 384 res = read (fd, buf, count);
355 lseek (fd, ooffset, SEEK_SET); 385 lseek (fd, ooffset, SEEK_SET);
356 pthread_mutex_unlock (&iolock); 386 pthread_mutex_unlock (&preadwritelock);
357 387
358 return res; 388 return res;
359} 389}
360 390
361static ssize_t 391static ssize_t
362pwrite (int fd, void *buf, size_t count, off_t offset) 392pwrite (int fd, void *buf, size_t count, off_t offset)
363{ 393{
364 ssize_t res; 394 ssize_t res;
365 off_t ooffset; 395 off_t ooffset;
366 396
367 pthread_mutex_lock (&iolock); 397 pthread_mutex_lock (&preadwritelock);
368 ooffset = lseek (fd, 0, SEEK_CUR); 398 ooffset = lseek (fd, 0, SEEK_CUR);
369 lseek (fd, offset, SEEK_SET); 399 lseek (fd, offset, SEEK_SET);
370 res = write (fd, buf, count); 400 res = write (fd, buf, count);
371 lseek (fd, offset, SEEK_SET); 401 lseek (fd, offset, SEEK_SET);
372 pthread_mutex_unlock (&iolock); 402 pthread_mutex_unlock (&preadwritelock);
373 403
374 return res; 404 return res;
375} 405}
376#endif 406#endif
377 407
… …
380#endif 410#endif
381 411
382#if !HAVE_READAHEAD 412#if !HAVE_READAHEAD
383# define readahead aio_readahead 413# define readahead aio_readahead
384 414
385static char readahead_buf[4096];
386
387static ssize_t 415static ssize_t
388readahead (int fd, off_t offset, size_t count) 416readahead (int fd, off_t offset, size_t count)
389{ 417{
418 char readahead_buf[4096];
419
390 while (count > 0) 420 while (count > 0)
391 { 421 {
392 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
393 423
394 pread (fd, readahead_buf, len, offset); 424 pread (fd, readahead_buf, len, offset);
… …
397 } 427 }
398 428
399 errno = 0; 429 errno = 0;
400} 430}
401#endif 431#endif
432
433#if !HAVE_READDIR_R
434# define readdir_r aio_readdir_r
435
436static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437
438static int
439readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
440{
441 struct dirent *e;
442 int errorno;
443
444 pthread_mutex_lock (&readdirlock);
445
446 e = readdir (dirp);
447 errorno = errno;
448
449 if (e)
450 {
451 *res = ent;
452 strcpy (ent->d_name, e->d_name);
453 }
454 else
455 *res = 0;
456
457 pthread_mutex_unlock (&readdirlock);
458
459 errno = errorno;
460 return e ? 0 : -1;
461}
462#endif
463
464/* sendfile always needs emulation */
465static ssize_t
466sendfile_ (int ofd, int ifd, off_t offset, size_t count)
467{
468 ssize_t res;
469
470 if (!count)
471 return 0;
472
473#if HAVE_SENDFILE
474# if __linux
475 res = sendfile (ofd, ifd, &offset, count);
476
477# elif __freebsd
478 /*
479 * Of course, the freebsd sendfile is a dire hack with no thoughts
480 * wasted on making it similar to other I/O functions.
481 */
482 {
483 off_t sbytes;
484 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
485
486 if (res < 0 && sbytes)
487 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
488 res = sbytes;
489 }
490
491# elif __hpux
492 res = sendfile (ofd, ifd, offset, count, 0, 0);
493
494# elif __solaris
495 {
496 struct sendfilevec vec;
497 size_t sbytes;
498
499 vec.sfv_fd = ifd;
500 vec.sfv_flag = 0;
501 vec.sfv_off = offset;
502 vec.sfv_len = count;
503
504 res = sendfilev (ofd, &vec, 1, &sbytes);
505
506 if (res < 0 && sbytes)
507 res = sbytes;
508 }
509
510# endif
511#else
512 res = -1;
513 errno = ENOSYS;
514#endif
515
516 if (res < 0
517 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
518#if __solaris
519 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
520#endif
521 )
522 )
523 {
524 /* emulate sendfile. this is a major pain in the ass */
525 char buf[4096];
526 res = 0;
527
528 while (count)
529 {
530 ssize_t cnt;
531
532 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
533
534 if (cnt <= 0)
535 {
536 if (cnt && !res) res = -1;
537 break;
538 }
539
540 cnt = write (ofd, buf, cnt);
541
542 if (cnt <= 0)
543 {
544 if (cnt && !res) res = -1;
545 break;
546 }
547
548 offset += cnt;
549 res += cnt;
550 count -= cnt;
551 }
552 }
553
554 return res;
555}
556
557/* read a full directory */
558static int
559scandir_ (const char *path, void **namesp)
560{
561 DIR *dirp = opendir (path);
562 union
563 {
564 struct dirent d;
565 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566 } u;
567 struct dirent *entp;
568 char *name, *names;
569 int memlen = 4096;
570 int memofs = 0;
571 int res = 0;
572 int errorno;
573
574 if (!dirp)
575 return -1;
576
577 names = malloc (memlen);
578
579 for (;;)
580 {
581 errno = 0, readdir_r (dirp, &u.d, &entp);
582
583 if (!entp)
584 break;
585
586 name = entp->d_name;
587
588 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589 {
590 int len = strlen (name) + 1;
591
592 res++;
593
594 while (memofs + len > memlen)
595 {
596 memlen *= 2;
597 names = realloc (names, memlen);
598 if (!names)
599 break;
600 }
601
602 memcpy (names + memofs, name, len);
603 memofs += len;
604 }
605 }
606
607 errorno = errno;
608 closedir (dirp);
609
610 if (errorno)
611 {
612 free (names);
613 errno = errorno;
614 res = -1;
615 }
616
617 *namesp = (void *)names;
618 return res;
619}
402 620
403/*****************************************************************************/ 621/*****************************************************************************/
404 622
405static void * 623static void *
406aio_proc (void *thr_arg) 624aio_proc (void *thr_arg)
… …
438 { 656 {
439 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; 657 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; 658 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
441 659
442 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; 660 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
443 662
444 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 663 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
445 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 664 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
446 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 665 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
447 666
448 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; 667 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
449 case REQ_CLOSE: req->result = close (req->fd); break; 668 case REQ_CLOSE: req->result = close (req->fd); break;
450 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 669 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
451 case REQ_RMDIR: req->result = rmdir (req->dataptr); break; 670 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
452 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; 673 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
453 674
454 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 675 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
455 case REQ_FSYNC: req->result = fsync (req->fd); break; 676 case REQ_FSYNC: req->result = fsync (req->fd); break;
677 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
456 678
457 case REQ_QUIT: 679 case REQ_QUIT:
458 break; 680 break;
459 681
460 default: 682 default:
… …
484 pthread_mutex_unlock (&reslock); 706 pthread_mutex_unlock (&reslock);
485 } 707 }
486 while (type != REQ_QUIT); 708 while (type != REQ_QUIT);
487 709
488 return 0; 710 return 0;
711}
712
713/*****************************************************************************/
714
715static void atfork_prepare (void)
716{
717 pthread_mutex_lock (&reqlock);
718 pthread_mutex_lock (&reslock);
719#if !HAVE_PREADWRITE
720 pthread_mutex_lock (&preadwritelock);
721#endif
722#if !HAVE_READDIR_R
723 pthread_mutex_lock (&readdirlock);
724#endif
725}
726
727static void atfork_parent (void)
728{
729#if !HAVE_READDIR_R
730 pthread_mutex_unlock (&readdirlock);
731#endif
732#if !HAVE_PREADWRITE
733 pthread_mutex_unlock (&preadwritelock);
734#endif
735 pthread_mutex_unlock (&reslock);
736 pthread_mutex_unlock (&reqlock);
737}
738
739static void atfork_child (void)
740{
741 aio_req prv;
742
743 started = 0;
744
745 while (reqs)
746 {
747 prv = reqs;
748 reqs = prv->next;
749 free_req (prv);
750 }
751
752 reqs = reqe = 0;
753
754 while (ress)
755 {
756 prv = ress;
757 ress = prv->next;
758 free_req (prv);
759 }
760
761 ress = rese = 0;
762
763 close (respipe [0]);
764 close (respipe [1]);
765 create_pipe ();
766
767 atfork_parent ();
489} 768}
490 769
491#define dREQ \ 770#define dREQ \
492 aio_req req; \ 771 aio_req req; \
493 \ 772 \
… …
496 \ 775 \
497 Newz (0, req, 1, aio_cb); \ 776 Newz (0, req, 1, aio_cb); \
498 if (!req) \ 777 if (!req) \
499 croak ("out of memory during aio_req allocation"); \ 778 croak ("out of memory during aio_req allocation"); \
500 \ 779 \
501 req->callback = SvREFCNT_inc (callback); 780 req->callback = newSVsv (callback);
502 781
503MODULE = IO::AIO PACKAGE = IO::AIO 782MODULE = IO::AIO PACKAGE = IO::AIO
504 783
505PROTOTYPES: ENABLE 784PROTOTYPES: ENABLE
506 785
507BOOT: 786BOOT:
508{ 787{
788 HV *stash = gv_stashpv ("IO::AIO", 1);
789 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
790 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
791 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
792
509 create_pipe (); 793 create_pipe ();
510 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 794 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
511} 795}
512 796
513void 797void
514min_parallel(nthreads) 798min_parallel (nthreads)
515 int nthreads 799 int nthreads
516 PROTOTYPE: $ 800 PROTOTYPE: $
517 801
518void 802void
519max_parallel(nthreads) 803max_parallel (nthreads)
520 int nthreads 804 int nthreads
521 PROTOTYPE: $ 805 PROTOTYPE: $
522 806
523int 807int
524max_outstanding(nreqs) 808max_outstanding (nreqs)
525 int nreqs 809 int nreqs
526 PROTOTYPE: $ 810 PROTOTYPE: $
527 CODE: 811 CODE:
528 RETVAL = max_outstanding; 812 RETVAL = max_outstanding;
529 max_outstanding = nreqs; 813 max_outstanding = nreqs;
530 814
531void 815void
532aio_open(pathname,flags,mode,callback=&PL_sv_undef) 816aio_open (pathname,flags,mode,callback=&PL_sv_undef)
533 SV * pathname 817 SV * pathname
534 int flags 818 int flags
535 int mode 819 int mode
536 SV * callback 820 SV * callback
537 PROTOTYPE: $$$;$ 821 PROTOTYPE: $$$;$
… …
547 831
548 send_req (req); 832 send_req (req);
549} 833}
550 834
551void 835void
552aio_close(fh,callback=&PL_sv_undef) 836aio_close (fh,callback=&PL_sv_undef)
553 SV * fh 837 SV * fh
554 SV * callback 838 SV * callback
555 PROTOTYPE: $;$ 839 PROTOTYPE: $;$
556 ALIAS: 840 ALIAS:
557 aio_close = REQ_CLOSE 841 aio_close = REQ_CLOSE
… …
567 851
568 send_req (req); 852 send_req (req);
569} 853}
570 854
571void 855void
572aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 856aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
573 SV * fh 857 SV * fh
574 UV offset 858 UV offset
575 IV length 859 UV length
576 SV * data 860 SV * data
577 IV dataoffset 861 UV dataoffset
578 SV * callback 862 SV * callback
579 ALIAS: 863 ALIAS:
580 aio_read = REQ_READ 864 aio_read = REQ_READ
581 aio_write = REQ_WRITE 865 aio_write = REQ_WRITE
582 PROTOTYPE: $$$$$;$ 866 PROTOTYPE: $$$$$;$
… …
619 : IoOFP (sv_2io (fh))); 903 : IoOFP (sv_2io (fh)));
620 req->offset = offset; 904 req->offset = offset;
621 req->length = length; 905 req->length = length;
622 req->data = SvREFCNT_inc (data); 906 req->data = SvREFCNT_inc (data);
623 req->dataptr = (char *)svptr + dataoffset; 907 req->dataptr = (char *)svptr + dataoffset;
624 req->callback = SvREFCNT_inc (callback); 908
909 if (!SvREADONLY (data))
910 {
911 SvREADONLY_on (data);
912 req->data2ptr = (void *)data;
913 }
625 914
626 send_req (req); 915 send_req (req);
627 } 916 }
628} 917}
629 918
630void 919void
920aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
921 SV * out_fh
922 SV * in_fh
923 UV in_offset
924 UV length
925 SV * callback
926 PROTOTYPE: $$$$;$
927 CODE:
928{
929 dREQ;
930
931 req->type = REQ_SENDFILE;
932 req->fh = newSVsv (out_fh);
933 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
934 req->fh2 = newSVsv (in_fh);
935 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936 req->offset = in_offset;
937 req->length = length;
938
939 send_req (req);
940}
941
942void
631aio_readahead(fh,offset,length,callback=&PL_sv_undef) 943aio_readahead (fh,offset,length,callback=&PL_sv_undef)
632 SV * fh 944 SV * fh
633 UV offset 945 UV offset
634 IV length 946 IV length
635 SV * callback 947 SV * callback
636 PROTOTYPE: $$$;$ 948 PROTOTYPE: $$$;$
… …
646 958
647 send_req (req); 959 send_req (req);
648} 960}
649 961
650void 962void
651aio_stat(fh_or_path,callback=&PL_sv_undef) 963aio_stat (fh_or_path,callback=&PL_sv_undef)
652 SV * fh_or_path 964 SV * fh_or_path
653 SV * callback 965 SV * callback
654 ALIAS: 966 ALIAS:
655 aio_stat = REQ_STAT 967 aio_stat = REQ_STAT
656 aio_lstat = REQ_LSTAT 968 aio_lstat = REQ_LSTAT
… …
658{ 970{
659 dREQ; 971 dREQ;
660 972
661 New (0, req->statdata, 1, Stat_t); 973 New (0, req->statdata, 1, Stat_t);
662 if (!req->statdata) 974 if (!req->statdata)
975 {
976 free_req (req);
663 croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)"); 977 croak ("out of memory during aio_req->statdata allocation");
978 }
664 979
665 if (SvPOK (fh_or_path)) 980 if (SvPOK (fh_or_path))
666 { 981 {
667 req->type = ix; 982 req->type = ix;
668 req->data = newSVsv (fh_or_path); 983 req->data = newSVsv (fh_or_path);
… …
677 992
678 send_req (req); 993 send_req (req);
679} 994}
680 995
681void 996void
682aio_unlink(pathname,callback=&PL_sv_undef) 997aio_unlink (pathname,callback=&PL_sv_undef)
683 SV * pathname 998 SV * pathname
684 SV * callback 999 SV * callback
685 ALIAS: 1000 ALIAS:
686 aio_unlink = REQ_UNLINK 1001 aio_unlink = REQ_UNLINK
687 aio_rmdir = REQ_RMDIR 1002 aio_rmdir = REQ_RMDIR
1003 aio_readdir = REQ_READDIR
688 CODE: 1004 CODE:
689{ 1005{
690 dREQ; 1006 dREQ;
691 1007
692 req->type = ix; 1008 req->type = ix;
… …
695 1011
696 send_req (req); 1012 send_req (req);
697} 1013}
698 1014
699void 1015void
700aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1016aio_link (oldpath,newpath,callback=&PL_sv_undef)
701 SV * oldpath 1017 SV * oldpath
702 SV * newpath 1018 SV * newpath
703 SV * callback 1019 SV * callback
1020 ALIAS:
1021 aio_link = REQ_LINK
1022 aio_symlink = REQ_SYMLINK
1023 aio_rename = REQ_RENAME
704 CODE: 1024 CODE:
705{ 1025{
706 dREQ; 1026 dREQ;
707 1027
708 req->type = REQ_SYMLINK; 1028 req->type = ix;
709 req->fh = newSVsv (oldpath); 1029 req->fh = newSVsv (oldpath);
710 req->data2ptr = SvPVbyte_nolen (req->fh); 1030 req->data2ptr = SvPVbyte_nolen (req->fh);
711 req->data = newSVsv (newpath); 1031 req->data = newSVsv (newpath);
712 req->dataptr = SvPVbyte_nolen (req->data); 1032 req->dataptr = SvPVbyte_nolen (req->data);
713 1033
714 send_req (req); 1034 send_req (req);
715} 1035}
716 1036
1037#if 0
1038
1039# undocumented, because it does not cancel active requests
717void 1040void
1041cancel_most_requests ()
1042 PROTOTYPE:
1043 CODE:
1044{
1045 aio_req *req;
1046
1047 pthread_mutex_lock (&reqlock);
1048 for (req = reqs; req; req = req->next)
1049 req->flags |= 1;
1050 pthread_mutex_unlock (&reqlock);
1051
1052 pthread_mutex_lock (&reslock);
1053 for (req = ress; req; req = req->next)
1054 req->flags |= 1;
1055 pthread_mutex_unlock (&reslock);
1056}
1057
1058#endif
1059
1060void
718flush() 1061flush ()
719 PROTOTYPE: 1062 PROTOTYPE:
720 CODE: 1063 CODE:
721 while (nreqs) 1064 while (nreqs)
722 { 1065 {
723 poll_wait (); 1066 poll_wait ();

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