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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs.
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC

1#ifndef _REENTRANT
2# define _REENTRANT 1 1#define _REENTRANT 1
3#endif
4#include <errno.h> 2#include <errno.h>
5 3
6#include "EXTERN.h" 4#include "EXTERN.h"
7#include "perl.h" 5#include "perl.h"
8#include "XSUB.h" 6#include "XSUB.h"
9 7
10#include "autoconf/config.h" 8#include "autoconf/config.h"
11 9
10#include <pthread.h>
11
12#include <stddef.h>
13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14 16#include <limits.h>
15#include <unistd.h> 17#include <unistd.h>
16#include <fcntl.h> 18#include <fcntl.h>
17#include <signal.h> 19#include <signal.h>
18#include <sched.h> 20#include <sched.h>
19 21
20#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
21 36
22typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 37/* used for struct dirent, AIX doesn't provide it */
23typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 38#ifndef NAME_MAX
24typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 39# define NAME_MAX 4096
40#endif
25 41
26#if __ia64 42#if __ia64
27# define STACKSIZE 65536 43# define STACKSIZE 65536
28#else 44#else
29# define STACKSIZE 4096 45# define STACKSIZE 8192
30#endif 46#endif
31 47
32enum { 48enum {
33 REQ_QUIT, 49 REQ_QUIT,
34 REQ_OPEN, REQ_CLOSE, 50 REQ_OPEN, REQ_CLOSE,
35 REQ_READ, REQ_WRITE, REQ_READAHEAD, 51 REQ_READ, REQ_WRITE, REQ_READAHEAD,
52 REQ_SENDFILE,
36 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 53 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
37 REQ_FSYNC, REQ_FDATASYNC, 54 REQ_FSYNC, REQ_FDATASYNC,
55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
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;
52 void *dataptr; 73 SV *fh, *fh2;
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;
… …
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 89static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68 90
69static volatile aio_req reqs, reqe; /* queue start, queue end */ 91static volatile aio_req reqs, reqe; /* queue start, queue end */
70static volatile aio_req ress, rese; /* queue start, queue end */ 92static volatile aio_req ress, rese; /* queue start, queue end */
71 93
94static void free_req (aio_req req)
95{
96 if (req->data)
97 SvREFCNT_dec (req->data);
98
99 if (req->fh)
100 SvREFCNT_dec (req->fh);
101
102 if (req->fh2)
103 SvREFCNT_dec (req->fh2);
104
105 if (req->statdata)
106 Safefree (req->statdata);
107
108 if (req->callback)
109 SvREFCNT_dec (req->callback);
110
111 if (req->type == REQ_READDIR && req->result >= 0)
112 free (req->data2ptr);
113
114 Safefree (req);
115}
116
72static void 117static void
73poll_wait () 118poll_wait ()
74{ 119{
75 if (nreqs && !ress) 120 if (nreqs && !ress)
76 { 121 {
… …
85static int 130static int
86poll_cb () 131poll_cb ()
87{ 132{
88 dSP; 133 dSP;
89 int count = 0; 134 int count = 0;
135 int do_croak = 0;
90 aio_req req, prv; 136 aio_req req;
91 137
138 for (;;)
139 {
92 pthread_mutex_lock (&reslock); 140 pthread_mutex_lock (&reslock);
141 req = ress;
93 142
94 { 143 if (req)
144 {
145 ress = req->next;
146
147 if (!ress)
148 {
95 /* read any signals sent by the worker threads */ 149 /* read any signals sent by the worker threads */
96 char buf [32]; 150 char buf [32];
97 while (read (respipe [0], buf, 32) > 0) 151 while (read (respipe [0], buf, 32) == 32)
152 ;
153
154 rese = 0;
155 }
98 ; 156 }
99 }
100 157
101 req = ress;
102 ress = rese = 0;
103
104 pthread_mutex_unlock (&reslock); 158 pthread_mutex_unlock (&reslock);
105 159
106 while (req) 160 if (!req)
107 { 161 break;
162
108 nreqs--; 163 nreqs--;
109 164
110 if (req->type == REQ_QUIT) 165 if (req->type == REQ_QUIT)
111 started--; 166 started--;
112 else 167 else
113 { 168 {
114 int errorno = errno; 169 int errorno = errno;
115 errno = req->errorno; 170 errno = req->errorno;
116 171
117 if (req->type == REQ_READ) 172 if (req->type == REQ_READ)
118 SvCUR_set (req->data, req->dataoffset 173 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
119 + req->result > 0 ? req->result : 0);
120 174
175 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176 SvREADONLY_off (req->data);
177
121 if (req->data) 178 if (req->statdata)
122 SvREFCNT_dec (req->data);
123
124 if (req->fh)
125 SvREFCNT_dec (req->fh);
126
127 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
128 { 179 {
129 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 180 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
130 PL_laststatval = req->result; 181 PL_laststatval = req->result;
131 PL_statcache = *(req->statdata); 182 PL_statcache = *(req->statdata);
132
133 Safefree (req->statdata);
134 } 183 }
135 184
136 ENTER; 185 ENTER;
137 PUSHMARK (SP); 186 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result)));
139 187
140 if (req->type == REQ_OPEN) 188 if (req->type == REQ_READDIR)
141 { 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 {
142 /* convert fd to fh */ 217 /* convert fd to fh */
143 SV *fh; 218 SV *fh;
144 219
145 PUTBACK; 220 PUTBACK;
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 221 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
147 SPAGAIN; 222 SPAGAIN;
148 223
149 fh = SvREFCNT_inc (POPs); 224 fh = SvREFCNT_inc (POPs);
150 225
151 PUSHMARK (SP); 226 PUSHMARK (SP);
152 XPUSHs (sv_2mortal (fh)); 227 XPUSHs (sv_2mortal (fh));
228 }
153 } 229 }
154 230
155 if (SvOK (req->callback)) 231 if (SvOK (req->callback))
156 { 232 {
157 PUTBACK; 233 PUTBACK;
158 call_sv (req->callback, G_VOID | G_EVAL); 234 call_sv (req->callback, G_VOID | G_EVAL);
159 SPAGAIN; 235 SPAGAIN;
236
237 if (SvTRUE (ERRSV))
238 {
239 free_req (req);
240 croak (0);
241 }
160 } 242 }
161 243
162 LEAVE; 244 LEAVE;
163
164 if (req->callback)
165 SvREFCNT_dec (req->callback);
166 245
167 errno = errorno; 246 errno = errorno;
168 count++; 247 count++;
169 } 248 }
170 249
171 prv = req; 250 free_req (req);
172 req = req->next;
173 Safefree (prv);
174
175 /* TODO: croak on errors? */
176 } 251 }
177 252
178 return count; 253 return count;
179} 254}
180 255
… …
201} 276}
202 277
203static void 278static void
204send_req (aio_req req) 279send_req (aio_req req)
205{ 280{
281 while (started < wanted && nreqs >= started)
282 start_thread ();
283
206 nreqs++; 284 nreqs++;
207 285
208 pthread_mutex_lock (&reqlock); 286 pthread_mutex_lock (&reqlock);
209 287
210 req->next = 0; 288 req->next = 0;
… …
218 reqe = reqs = req; 296 reqe = reqs = req;
219 297
220 pthread_cond_signal (&reqwait); 298 pthread_cond_signal (&reqwait);
221 pthread_mutex_unlock (&reqlock); 299 pthread_mutex_unlock (&reqlock);
222 300
223 while (nreqs > max_outstanding) 301 if (nreqs > max_outstanding)
302 for (;;)
303 {
304 poll_cb ();
305
306 if (nreqs <= max_outstanding)
307 break;
308
309 poll_wait ();
310 }
311}
312
313static void
314end_thread (void)
315{
316 aio_req req;
317 Newz (0, req, 1, aio_cb);
318 req->type = REQ_QUIT;
319
320 send_req (req);
321}
322
323static void min_parallel (int nthreads)
324{
325 if (wanted < nthreads)
326 wanted = nthreads;
327}
328
329static void max_parallel (int nthreads)
330{
331 int cur = started;
332
333 if (wanted > nthreads)
334 wanted = nthreads;
335
336 while (cur > wanted)
337 {
338 end_thread ();
339 cur--;
340 }
341
342 while (started > wanted)
224 { 343 {
225 poll_wait (); 344 poll_wait ();
226 poll_cb (); 345 poll_cb ();
227 } 346 }
228} 347}
229 348
230static void 349static void create_pipe ()
231end_thread (void)
232{ 350{
233 aio_req req; 351 if (pipe (respipe))
234 New (0, req, 1, aio_cb); 352 croak ("unable to initialize result pipe");
235 req->type = REQ_QUIT;
236 353
237 send_req (req); 354 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
238} 355 croak ("cannot set result pipe to nonblocking mode");
239 356
357 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
358 croak ("cannot set result pipe to nonblocking mode");
359}
360
361/*****************************************************************************/
240/* work around various missing functions */ 362/* work around various missing functions */
241 363
242#if !HAVE_PREADWRITE 364#if !HAVE_PREADWRITE
243# define pread aio_pread 365# define pread aio_pread
244# define pwrite aio_pwrite 366# define pwrite aio_pwrite
… …
246/* 368/*
247 * make our pread/pwrite safe against themselves, but not against 369 * make our pread/pwrite safe against themselves, but not against
248 * 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,
249 * but that's your problem, not mine. 371 * but that's your problem, not mine.
250 */ 372 */
251static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; 373static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
252 374
253static ssize_t 375static ssize_t
254pread (int fd, void *buf, size_t count, off_t offset) 376pread (int fd, void *buf, size_t count, off_t offset)
255{ 377{
256 ssize_t res; 378 ssize_t res;
257 off_t ooffset; 379 off_t ooffset;
258 380
259 pthread_mutex_lock (&iolock); 381 pthread_mutex_lock (&preadwritelock);
260 ooffset = lseek (fd, 0, SEEK_CUR); 382 ooffset = lseek (fd, 0, SEEK_CUR);
261 lseek (fd, offset, SEEK_SET); 383 lseek (fd, offset, SEEK_SET);
262 res = read (fd, buf, count); 384 res = read (fd, buf, count);
263 lseek (fd, ooffset, SEEK_SET); 385 lseek (fd, ooffset, SEEK_SET);
264 pthread_mutex_unlock (&iolock); 386 pthread_mutex_unlock (&preadwritelock);
265 387
266 return res; 388 return res;
267} 389}
268 390
269static ssize_t 391static ssize_t
270pwrite (int fd, void *buf, size_t count, off_t offset) 392pwrite (int fd, void *buf, size_t count, off_t offset)
271{ 393{
272 ssize_t res; 394 ssize_t res;
273 off_t ooffset; 395 off_t ooffset;
274 396
275 pthread_mutex_lock (&iolock); 397 pthread_mutex_lock (&preadwritelock);
276 ooffset = lseek (fd, 0, SEEK_CUR); 398 ooffset = lseek (fd, 0, SEEK_CUR);
277 lseek (fd, offset, SEEK_SET); 399 lseek (fd, offset, SEEK_SET);
278 res = write (fd, buf, count); 400 res = write (fd, buf, count);
279 lseek (fd, offset, SEEK_SET); 401 lseek (fd, offset, SEEK_SET);
280 pthread_mutex_unlock (&iolock); 402 pthread_mutex_unlock (&preadwritelock);
281 403
282 return res; 404 return res;
283} 405}
284#endif 406#endif
285 407
… …
288#endif 410#endif
289 411
290#if !HAVE_READAHEAD 412#if !HAVE_READAHEAD
291# define readahead aio_readahead 413# define readahead aio_readahead
292 414
293static char readahead_buf[4096];
294
295static ssize_t 415static ssize_t
296readahead (int fd, off_t offset, size_t count) 416readahead (int fd, off_t offset, size_t count)
297{ 417{
418 char readahead_buf[4096];
419
298 while (count > 0) 420 while (count > 0)
299 { 421 {
300 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 422 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301 423
302 pread (fd, readahead_buf, len, offset); 424 pread (fd, readahead_buf, len, offset);
… …
305 } 427 }
306 428
307 errno = 0; 429 errno = 0;
308} 430}
309#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}
620
621/*****************************************************************************/
310 622
311static void * 623static void *
312aio_proc (void *thr_arg) 624aio_proc (void *thr_arg)
313{ 625{
314 aio_req req; 626 aio_req req;
… …
344 { 656 {
345 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;
346 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;
347 659
348 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;
349 662
350 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; 663 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
351 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; 664 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
352 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; 665 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353 666
354 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;
355 case REQ_CLOSE: req->result = close (req->fd); break; 668 case REQ_CLOSE: req->result = close (req->fd); break;
356 case REQ_UNLINK: req->result = unlink (req->dataptr); break; 669 case REQ_UNLINK: req->result = unlink (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;
673 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
357 674
358 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 675 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359 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;
360 678
361 case REQ_QUIT: 679 case REQ_QUIT:
362 break; 680 break;
363 681
364 default: 682 default:
… …
390 while (type != REQ_QUIT); 708 while (type != REQ_QUIT);
391 709
392 return 0; 710 return 0;
393} 711}
394 712
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 ();
768}
769
770#define dREQ \
771 aio_req req; \
772 \
773 if (SvOK (callback) && !SvROK (callback)) \
774 croak ("clalback must be undef or of reference type"); \
775 \
776 Newz (0, req, 1, aio_cb); \
777 if (!req) \
778 croak ("out of memory during aio_req allocation"); \
779 \
780 req->callback = newSVsv (callback);
781
395MODULE = IO::AIO PACKAGE = IO::AIO 782MODULE = IO::AIO PACKAGE = IO::AIO
396 783
397PROTOTYPES: ENABLE 784PROTOTYPES: ENABLE
398 785
399BOOT: 786BOOT:
400{ 787{
401 if (pipe (respipe)) 788 HV *stash = gv_stashpv ("IO::AIO", 1);
402 croak ("unable to initialize result pipe"); 789 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
790 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
791 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
403 792
404 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 793 create_pipe ();
405 croak ("cannot set result pipe to nonblocking mode"); 794 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
406
407 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
408 croak ("cannot set result pipe to nonblocking mode");
409} 795}
410 796
411void 797void
412min_parallel(nthreads) 798min_parallel (nthreads)
413 int nthreads 799 int nthreads
414 PROTOTYPE: $ 800 PROTOTYPE: $
415 CODE:
416 while (nthreads > started)
417 start_thread ();
418 801
419void 802void
420max_parallel(nthreads) 803max_parallel (nthreads)
421 int nthreads 804 int nthreads
422 PROTOTYPE: $ 805 PROTOTYPE: $
423 CODE:
424{
425 int cur = started;
426 while (cur > nthreads)
427 {
428 end_thread ();
429 cur--;
430 }
431
432 while (started > nthreads)
433 {
434 poll_wait ();
435 poll_cb ();
436 }
437}
438 806
439int 807int
440max_outstanding(nreqs) 808max_outstanding (nreqs)
441 int nreqs 809 int nreqs
442 PROTOTYPE: $ 810 PROTOTYPE: $
443 CODE: 811 CODE:
444 RETVAL = max_outstanding; 812 RETVAL = max_outstanding;
445 max_outstanding = nreqs; 813 max_outstanding = nreqs;
446 814
447void 815void
448aio_open(pathname,flags,mode,callback=&PL_sv_undef) 816aio_open (pathname,flags,mode,callback=&PL_sv_undef)
449 SV * pathname 817 SV * pathname
450 int flags 818 int flags
451 int mode 819 int mode
452 SV * callback 820 SV * callback
453 PROTOTYPE: $$$;$ 821 PROTOTYPE: $$$;$
454 CODE: 822 CODE:
455{ 823{
456 aio_req req; 824 dREQ;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462 825
463 req->type = REQ_OPEN; 826 req->type = REQ_OPEN;
464 req->data = newSVsv (pathname); 827 req->data = newSVsv (pathname);
465 req->dataptr = SvPV_nolen (req->data); 828 req->dataptr = SvPVbyte_nolen (req->data);
466 req->fd = flags; 829 req->fd = flags;
467 req->mode = mode; 830 req->mode = mode;
468 req->callback = SvREFCNT_inc (callback);
469 831
470 send_req (req); 832 send_req (req);
471} 833}
472 834
473void 835void
474aio_close(fh,callback=&PL_sv_undef) 836aio_close (fh,callback=&PL_sv_undef)
475 SV * fh 837 SV * fh
476 SV * callback 838 SV * callback
477 PROTOTYPE: $;$ 839 PROTOTYPE: $;$
478 ALIAS: 840 ALIAS:
479 aio_close = REQ_CLOSE 841 aio_close = REQ_CLOSE
480 aio_fsync = REQ_FSYNC 842 aio_fsync = REQ_FSYNC
481 aio_fdatasync = REQ_FDATASYNC 843 aio_fdatasync = REQ_FDATASYNC
482 CODE: 844 CODE:
483{ 845{
484 aio_req req; 846 dREQ;
485
486 Newz (0, req, 1, aio_cb);
487
488 if (!req)
489 croak ("out of memory during aio_req allocation");
490 847
491 req->type = ix; 848 req->type = ix;
492 req->fh = newSVsv (fh); 849 req->fh = newSVsv (fh);
493 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 850 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494 req->callback = SvREFCNT_inc (callback);
495 851
496 send_req (req); 852 send_req (req);
497} 853}
498 854
499void 855void
500aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 856aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501 SV * fh 857 SV * fh
502 UV offset 858 UV offset
503 IV length 859 UV length
504 SV * data 860 SV * data
505 IV dataoffset 861 UV dataoffset
506 SV * callback 862 SV * callback
507 ALIAS: 863 ALIAS:
508 aio_read = REQ_READ 864 aio_read = REQ_READ
509 aio_write = REQ_WRITE 865 aio_write = REQ_WRITE
510 PROTOTYPE: $$$$$;$ 866 PROTOTYPE: $$$$$;$
511 CODE: 867 CODE:
512{ 868{
513 aio_req req; 869 aio_req req;
514 STRLEN svlen; 870 STRLEN svlen;
515 char *svptr = SvPV (data, svlen); 871 char *svptr = SvPVbyte (data, svlen);
516 872
517 SvUPGRADE (data, SVt_PV); 873 SvUPGRADE (data, SVt_PV);
518 SvPOK_on (data); 874 SvPOK_on (data);
519 875
520 if (dataoffset < 0) 876 if (dataoffset < 0)
… …
536 } 892 }
537 893
538 if (length < 0) 894 if (length < 0)
539 croak ("length must not be negative"); 895 croak ("length must not be negative");
540 896
541 Newz (0, req, 1, aio_cb); 897 {
898 dREQ;
542 899
543 if (!req)
544 croak ("out of memory during aio_req allocation");
545
546 req->type = ix; 900 req->type = ix;
547 req->fh = newSVsv (fh); 901 req->fh = newSVsv (fh);
548 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 902 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549 : IoOFP (sv_2io (fh))); 903 : IoOFP (sv_2io (fh)));
550 req->offset = offset; 904 req->offset = offset;
905 req->length = length;
906 req->data = SvREFCNT_inc (data);
907 req->dataptr = (char *)svptr + dataoffset;
908
909 if (!SvREADONLY (data))
910 {
911 SvREADONLY_on (data);
912 req->data2ptr = (void *)data;
913 }
914
915 send_req (req);
916 }
917}
918
919void
920aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
921 SV * out_fh
922 SV * in_fh
923 UV in_offset
924 UV length
925 SV * callback
926 PROTOTYPE: $$$$;$
927 CODE:
928{
929 dREQ;
930
931 req->type = REQ_SENDFILE;
932 req->fh = newSVsv (out_fh);
933 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
934 req->fh2 = newSVsv (in_fh);
935 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936 req->offset = in_offset;
551 req->length = length; 937 req->length = length;
552 req->data = SvREFCNT_inc (data);
553 req->dataptr = (char *)svptr + dataoffset;
554 req->callback = SvREFCNT_inc (callback);
555 938
556 send_req (req); 939 send_req (req);
557} 940}
558 941
559void 942void
560aio_readahead(fh,offset,length,callback=&PL_sv_undef) 943aio_readahead (fh,offset,length,callback=&PL_sv_undef)
561 SV * fh 944 SV * fh
562 UV offset 945 UV offset
563 IV length 946 IV length
564 SV * callback 947 SV * callback
565 PROTOTYPE: $$$;$ 948 PROTOTYPE: $$$;$
566 CODE: 949 CODE:
567{ 950{
568 aio_req req; 951 dREQ;
569
570 if (length < 0)
571 croak ("length must not be negative");
572
573 Newz (0, req, 1, aio_cb);
574
575 if (!req)
576 croak ("out of memory during aio_req allocation");
577 952
578 req->type = REQ_READAHEAD; 953 req->type = REQ_READAHEAD;
579 req->fh = newSVsv (fh); 954 req->fh = newSVsv (fh);
580 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 955 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581 req->offset = offset; 956 req->offset = offset;
582 req->length = length; 957 req->length = length;
583 req->callback = SvREFCNT_inc (callback);
584 958
585 send_req (req); 959 send_req (req);
586} 960}
587 961
588void 962void
589aio_stat(fh_or_path,callback=&PL_sv_undef) 963aio_stat (fh_or_path,callback=&PL_sv_undef)
590 SV * fh_or_path 964 SV * fh_or_path
591 SV * callback 965 SV * callback
592 ALIAS: 966 ALIAS:
593 aio_stat = REQ_STAT 967 aio_stat = REQ_STAT
594 aio_lstat = REQ_LSTAT 968 aio_lstat = REQ_LSTAT
595 CODE: 969 CODE:
596{ 970{
597 aio_req req; 971 dREQ;
598
599 Newz (0, req, 1, aio_cb);
600
601 if (!req)
602 croak ("out of memory during aio_req allocation");
603 972
604 New (0, req->statdata, 1, Stat_t); 973 New (0, req->statdata, 1, Stat_t);
605
606 if (!req->statdata) 974 if (!req->statdata)
975 {
976 free_req (req);
607 croak ("out of memory during aio_req->statdata allocation"); 977 croak ("out of memory during aio_req->statdata allocation");
978 }
608 979
609 if (SvPOK (fh_or_path)) 980 if (SvPOK (fh_or_path))
610 { 981 {
611 req->type = ix; 982 req->type = ix;
612 req->data = newSVsv (fh_or_path); 983 req->data = newSVsv (fh_or_path);
613 req->dataptr = SvPV_nolen (req->data); 984 req->dataptr = SvPVbyte_nolen (req->data);
614 } 985 }
615 else 986 else
616 { 987 {
617 req->type = REQ_FSTAT; 988 req->type = REQ_FSTAT;
618 req->fh = newSVsv (fh_or_path); 989 req->fh = newSVsv (fh_or_path);
619 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 990 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620 } 991 }
621 992
622 req->callback = SvREFCNT_inc (callback);
623
624 send_req (req); 993 send_req (req);
625} 994}
626 995
627void 996void
628aio_unlink(pathname,callback=&PL_sv_undef) 997aio_unlink (pathname,callback=&PL_sv_undef)
629 SV * pathname 998 SV * pathname
630 SV * callback 999 SV * callback
1000 ALIAS:
1001 aio_unlink = REQ_UNLINK
1002 aio_rmdir = REQ_RMDIR
1003 aio_readdir = REQ_READDIR
631 CODE: 1004 CODE:
632{ 1005{
633 aio_req req; 1006 dREQ;
634 1007
635 Newz (0, req, 1, aio_cb); 1008 req->type = ix;
636
637 if (!req)
638 croak ("out of memory during aio_req allocation");
639
640 req->type = REQ_UNLINK;
641 req->data = newSVsv (pathname); 1009 req->data = newSVsv (pathname);
642 req->dataptr = SvPV_nolen (req->data); 1010 req->dataptr = SvPVbyte_nolen (req->data);
643 req->callback = SvREFCNT_inc (callback);
644 1011
645 send_req (req); 1012 send_req (req);
646} 1013}
647 1014
648void 1015void
1016aio_link (oldpath,newpath,callback=&PL_sv_undef)
1017 SV * oldpath
1018 SV * newpath
1019 SV * callback
1020 ALIAS:
1021 aio_link = REQ_LINK
1022 aio_symlink = REQ_SYMLINK
1023 aio_rename = REQ_RENAME
1024 CODE:
1025{
1026 dREQ;
1027
1028 req->type = ix;
1029 req->fh = newSVsv (oldpath);
1030 req->data2ptr = SvPVbyte_nolen (req->fh);
1031 req->data = newSVsv (newpath);
1032 req->dataptr = SvPVbyte_nolen (req->data);
1033
1034 send_req (req);
1035}
1036
1037void
649flush() 1038flush ()
650 PROTOTYPE: 1039 PROTOTYPE:
651 CODE: 1040 CODE:
652 while (nreqs) 1041 while (nreqs)
653 { 1042 {
654 poll_wait (); 1043 poll_wait ();

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