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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.69 by root, Tue Oct 24 11:57:30 2006 UTC

… …
46# define NAME_MAX 4096 46# define NAME_MAX 4096
47#endif 47#endif
48 48
49#if __ia64 49#if __ia64
50# define STACKSIZE 65536 50# define STACKSIZE 65536
51#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52# define STACKSIZE PTHREAD_STACK_MIN
51#else 53#else
52# define STACKSIZE 8192 54# define STACKSIZE 16384
53#endif 55#endif
56
57/* buffer size for various temporary buffers */
58#define AIO_BUFSIZE 65536
59
60#define dBUF \
61 char *aio_buf = malloc (AIO_BUFSIZE); \
62 if (!aio_buf) \
63 return -1;
64
65#define fBUF free (aio_buf)
54 66
55enum { 67enum {
56 REQ_QUIT, 68 REQ_QUIT,
57 REQ_OPEN, REQ_CLOSE, 69 REQ_OPEN, REQ_CLOSE,
58 REQ_READ, REQ_WRITE, REQ_READAHEAD, 70 REQ_READ, REQ_WRITE, REQ_READAHEAD,
… …
61 REQ_FSYNC, REQ_FDATASYNC, 73 REQ_FSYNC, REQ_FDATASYNC,
62 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 74 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63 REQ_READDIR, 75 REQ_READDIR,
64 REQ_LINK, REQ_SYMLINK, 76 REQ_LINK, REQ_SYMLINK,
65 REQ_GROUP, REQ_NOP, 77 REQ_GROUP, REQ_NOP,
66 REQ_SLEEP, 78 REQ_BUSY,
67}; 79};
68 80
69#define AIO_REQ_KLASS "IO::AIO::REQ" 81#define AIO_REQ_KLASS "IO::AIO::REQ"
70#define AIO_GRP_KLASS "IO::AIO::GRP" 82#define AIO_GRP_KLASS "IO::AIO::GRP"
71 83
… …
105 PRI_MIN = -4, 117 PRI_MIN = -4,
106 PRI_MAX = 4, 118 PRI_MAX = 4,
107 119
108 DEFAULT_PRI = 0, 120 DEFAULT_PRI = 0,
109 PRI_BIAS = -PRI_MIN, 121 PRI_BIAS = -PRI_MIN,
122 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
110}; 123};
111 124
112static int next_pri = DEFAULT_PRI + PRI_BIAS; 125static int next_pri = DEFAULT_PRI + PRI_BIAS;
113 126
114static int started, wanted; 127static int started, wanted;
… …
124 137
125static pthread_mutex_t reslock = AIO_MUTEX_INIT; 138static pthread_mutex_t reslock = AIO_MUTEX_INIT;
126static pthread_mutex_t reqlock = AIO_MUTEX_INIT; 139static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; 140static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128 141
129static volatile aio_req reqs, reqe; /* queue start, queue end */ 142/*
130static volatile aio_req ress, rese; /* queue start, queue end */ 143 * a somewhat faster data structure might be nice, but
144 * with 8 priorities this actually needs <20 insns
145 * per shift, the most expensive operation.
146 */
147typedef struct {
148 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
149 int size;
150} reqq;
151
152static reqq req_queue;
153static reqq res_queue;
154
155int reqq_push (reqq *q, aio_req req)
156{
157 int pri = req->pri;
158 req->next = 0;
159
160 if (q->qe[pri])
161 {
162 q->qe[pri]->next = req;
163 q->qe[pri] = req;
164 }
165 else
166 q->qe[pri] = q->qs[pri] = req;
167
168 return q->size++;
169}
170
171aio_req reqq_shift (reqq *q)
172{
173 int pri;
174
175 if (!q->size)
176 return 0;
177
178 --q->size;
179
180 for (pri = NUM_PRI; pri--; )
181 {
182 aio_req req = q->qs[pri];
183
184 if (req)
185 {
186 if (!(q->qs[pri] = req->next))
187 q->qe[pri] = 0;
188
189 return req;
190 }
191 }
192
193 abort ();
194}
131 195
132static void req_invoke (aio_req req); 196static void req_invoke (aio_req req);
133static void req_free (aio_req req); 197static void req_free (aio_req req);
134 198
135/* must be called at most once */ 199/* must be called at most once */
… …
169 ENTER; 233 ENTER;
170 SAVETMPS; 234 SAVETMPS;
171 PUSHMARK (SP); 235 PUSHMARK (SP);
172 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 236 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173 PUTBACK; 237 PUTBACK;
174 call_sv (grp->fh2, G_VOID | G_EVAL); 238 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
175 SPAGAIN; 239 SPAGAIN;
176 FREETMPS; 240 FREETMPS;
177 LEAVE; 241 LEAVE;
178 } 242 }
179 243
… …
206{ 270{
207 fd_set rfd; 271 fd_set rfd;
208 272
209 while (nreqs) 273 while (nreqs)
210 { 274 {
211 aio_req req; 275 int size;
212#if !(__x86 || __x86_64) /* safe without sempahore on this archs */ 276#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
213 pthread_mutex_lock (&reslock); 277 pthread_mutex_lock (&reslock);
214#endif 278#endif
215 req = ress; 279 size = res_queue.size;
216#if !(__x86 || __x86_64) /* safe without sempahore on this archs */ 280#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
217 pthread_mutex_unlock (&reslock); 281 pthread_mutex_unlock (&reslock);
218#endif 282#endif
219 283
220 if (req) 284 if (size)
221 return; 285 return;
222 286
223 FD_ZERO(&rfd); 287 FD_ZERO(&rfd);
224 FD_SET(respipe [0], &rfd); 288 FD_SET(respipe [0], &rfd);
225 289
… …
228} 292}
229 293
230static void req_invoke (aio_req req) 294static void req_invoke (aio_req req)
231{ 295{
232 dSP; 296 dSP;
233 int errorno = errno;
234 297
235 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) 298 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
236 return; 299 {
237
238 errno = req->errorno; 300 errno = req->errorno;
239 301
240 ENTER; 302 ENTER;
241 SAVETMPS; 303 SAVETMPS;
242 PUSHMARK (SP); 304 PUSHMARK (SP);
243 EXTEND (SP, 1); 305 EXTEND (SP, 1);
244 306
245 switch (req->type) 307 switch (req->type)
246 {
247 case REQ_READDIR:
248 { 308 {
249 SV *rv = &PL_sv_undef; 309 case REQ_READDIR:
250
251 if (req->result >= 0)
252 { 310 {
253 char *buf = req->data2ptr; 311 SV *rv = &PL_sv_undef;
254 AV *av = newAV ();
255 312
256 while (req->result) 313 if (req->result >= 0)
257 { 314 {
315 char *buf = req->data2ptr;
316 AV *av = newAV ();
317
318 while (req->result)
319 {
258 SV *sv = newSVpv (buf, 0); 320 SV *sv = newSVpv (buf, 0);
259 321
260 av_push (av, sv); 322 av_push (av, sv);
261 buf += SvCUR (sv) + 1; 323 buf += SvCUR (sv) + 1;
262 req->result--; 324 req->result--;
325 }
326
327 rv = sv_2mortal (newRV_noinc ((SV *)av));
263 } 328 }
264 329
265 rv = sv_2mortal (newRV_noinc ((SV *)av)); 330 PUSHs (rv);
266 } 331 }
332 break;
267 333
268 PUSHs (rv); 334 case REQ_OPEN:
335 {
336 /* convert fd to fh */
337 SV *fh;
338
339 PUSHs (sv_2mortal (newSViv (req->result)));
340 PUTBACK;
341 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
342 SPAGAIN;
343
344 fh = SvREFCNT_inc (POPs);
345
346 PUSHMARK (SP);
347 XPUSHs (sv_2mortal (fh));
348 }
349 break;
350
351 case REQ_GROUP:
352 req->fd = 2; /* mark group as finished */
353
354 if (req->data)
355 {
356 int i;
357 AV *av = (AV *)req->data;
358
359 EXTEND (SP, AvFILL (av) + 1);
360 for (i = 0; i <= AvFILL (av); ++i)
361 PUSHs (*av_fetch (av, i, 0));
362 }
363 break;
364
365 case REQ_NOP:
366 case REQ_BUSY:
367 break;
368
369 default:
370 PUSHs (sv_2mortal (newSViv (req->result)));
371 break;
269 } 372 }
270 break;
271 373
272 case REQ_OPEN:
273 {
274 /* convert fd to fh */
275 SV *fh;
276 374
277 PUSHs (sv_2mortal (newSViv (req->result)));
278 PUTBACK; 375 PUTBACK;
279 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280 SPAGAIN;
281
282 fh = SvREFCNT_inc (POPs);
283
284 PUSHMARK (SP);
285 XPUSHs (sv_2mortal (fh));
286 }
287 break;
288
289 case REQ_GROUP:
290 req->fd = 2; /* mark group as finished */
291
292 if (req->data)
293 {
294 int i;
295 AV *av = (AV *)req->data;
296
297 EXTEND (SP, AvFILL (av) + 1);
298 for (i = 0; i <= AvFILL (av); ++i)
299 PUSHs (*av_fetch (av, i, 0));
300 }
301 break;
302
303 case REQ_NOP:
304 case REQ_SLEEP:
305 break;
306
307 default:
308 PUSHs (sv_2mortal (newSViv (req->result)));
309 break;
310 }
311
312
313 PUTBACK;
314 call_sv (req->callback, G_VOID | G_EVAL); 376 call_sv (req->callback, G_VOID | G_EVAL);
315 SPAGAIN; 377 SPAGAIN;
316 378
317 FREETMPS; 379 FREETMPS;
318 LEAVE; 380 LEAVE;
319
320 errno = errorno;
321
322 if (SvTRUE (ERRSV))
323 { 381 }
324 req_free (req);
325 croak (0);
326 }
327}
328 382
329static void req_free (aio_req req)
330{
331 if (req->grp) 383 if (req->grp)
332 { 384 {
333 aio_req grp = req->grp; 385 aio_req grp = req->grp;
334 386
335 /* unlink request */ 387 /* unlink request */
… …
340 grp->grp_first = req->grp_next; 392 grp->grp_first = req->grp_next;
341 393
342 aio_grp_dec (grp); 394 aio_grp_dec (grp);
343 } 395 }
344 396
397 if (SvTRUE (ERRSV))
398 {
399 req_free (req);
400 croak (0);
401 }
402}
403
404static void req_free (aio_req req)
405{
345 if (req->self) 406 if (req->self)
346 { 407 {
347 sv_unmagic (req->self, PERL_MAGIC_ext); 408 sv_unmagic (req->self, PERL_MAGIC_ext);
348 SvREFCNT_dec (req->self); 409 SvREFCNT_dec (req->self);
349 } 410 }
… …
381 aio_req req; 442 aio_req req;
382 443
383 for (;;) 444 for (;;)
384 { 445 {
385 pthread_mutex_lock (&reslock); 446 pthread_mutex_lock (&reslock);
386 req = ress; 447 req = reqq_shift (&res_queue);
387 448
388 if (req) 449 if (req)
389 { 450 {
390 ress = req->next;
391
392 if (!ress) 451 if (!res_queue.size)
393 { 452 {
394 /* read any signals sent by the worker threads */ 453 /* read any signals sent by the worker threads */
395 char buf [32]; 454 char buf [32];
396 while (read (respipe [0], buf, 32) == 32) 455 while (read (respipe [0], buf, 32) == 32)
397 ; 456 ;
398
399 rese = 0;
400 } 457 }
401 } 458 }
402 459
403 pthread_mutex_unlock (&reslock); 460 pthread_mutex_unlock (&reslock);
404 461
… …
467 start_thread (); 524 start_thread ();
468 525
469 ++nreqs; 526 ++nreqs;
470 527
471 pthread_mutex_lock (&reqlock); 528 pthread_mutex_lock (&reqlock);
472 529 reqq_push (&req_queue, req);
473 req->next = 0;
474
475 if (reqe)
476 {
477 reqe->next = req;
478 reqe = req;
479 }
480 else
481 reqe = reqs = req;
482
483 pthread_cond_signal (&reqwait); 530 pthread_cond_signal (&reqwait);
484 pthread_mutex_unlock (&reqlock); 531 pthread_mutex_unlock (&reqlock);
485 532
486 if (nreqs > max_outstanding) 533 if (nreqs > max_outstanding)
487 for (;;) 534 for (;;)
… …
496} 543}
497 544
498static void end_thread (void) 545static void end_thread (void)
499{ 546{
500 aio_req req; 547 aio_req req;
548
501 Newz (0, req, 1, aio_cb); 549 Newz (0, req, 1, aio_cb);
550
502 req->type = REQ_QUIT; 551 req->type = REQ_QUIT;
552 req->pri = PRI_MAX + PRI_BIAS;
503 553
504 req_send (req); 554 req_send (req);
505} 555}
506 556
507static void min_parallel (int nthreads) 557static void min_parallel (int nthreads)
… …
594#if !HAVE_READAHEAD 644#if !HAVE_READAHEAD
595# define readahead aio_readahead 645# define readahead aio_readahead
596 646
597static ssize_t readahead (int fd, off_t offset, size_t count) 647static ssize_t readahead (int fd, off_t offset, size_t count)
598{ 648{
599 char readahead_buf[4096]; 649 dBUF;
600 650
601 while (count > 0) 651 while (count > 0)
602 { 652 {
603 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); 653 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
604 654
605 pread (fd, readahead_buf, len, offset); 655 pread (fd, aio_buf, len, offset);
606 offset += len; 656 offset += len;
607 count -= len; 657 count -= len;
608 } 658 }
659
660 fBUF;
609 661
610 errno = 0; 662 errno = 0;
611} 663}
612#endif 664#endif
613 665
… …
699#endif 751#endif
700 ) 752 )
701 ) 753 )
702 { 754 {
703 /* emulate sendfile. this is a major pain in the ass */ 755 /* emulate sendfile. this is a major pain in the ass */
704 char buf[4096]; 756 dBUF;
757
705 res = 0; 758 res = 0;
706 759
707 while (count) 760 while (count)
708 { 761 {
709 ssize_t cnt; 762 ssize_t cnt;
710 763
711 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); 764 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
712 765
713 if (cnt <= 0) 766 if (cnt <= 0)
714 { 767 {
715 if (cnt && !res) res = -1; 768 if (cnt && !res) res = -1;
716 break; 769 break;
717 } 770 }
718 771
719 cnt = write (ofd, buf, cnt); 772 cnt = write (ofd, aio_buf, cnt);
720 773
721 if (cnt <= 0) 774 if (cnt <= 0)
722 { 775 {
723 if (cnt && !res) res = -1; 776 if (cnt && !res) res = -1;
724 break; 777 break;
… …
726 779
727 offset += cnt; 780 offset += cnt;
728 res += cnt; 781 res += cnt;
729 count -= cnt; 782 count -= cnt;
730 } 783 }
784
785 fBUF;
731 } 786 }
732 787
733 return res; 788 return res;
734} 789}
735 790
736/* read a full directory */ 791/* read a full directory */
737static int scandir_ (const char *path, void **namesp) 792static int scandir_ (const char *path, void **namesp)
738{ 793{
739 DIR *dirp = opendir (path); 794 DIR *dirp;
740 union 795 union
741 { 796 {
742 struct dirent d; 797 struct dirent d;
743 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; 798 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
744 } u; 799 } *u;
745 struct dirent *entp; 800 struct dirent *entp;
746 char *name, *names; 801 char *name, *names;
747 int memlen = 4096; 802 int memlen = 4096;
748 int memofs = 0; 803 int memofs = 0;
749 int res = 0; 804 int res = 0;
750 int errorno; 805 int errorno;
751 806
807 dirp = opendir (path);
752 if (!dirp) 808 if (!dirp)
753 return -1; 809 return -1;
754 810
811 u = malloc (sizeof (*u));
755 names = malloc (memlen); 812 names = malloc (memlen);
756 813
814 if (u && names)
757 for (;;) 815 for (;;)
758 { 816 {
817 errno = 0;
759 errno = 0, readdir_r (dirp, &u.d, &entp); 818 readdir_r (dirp, &u->d, &entp);
760 819
761 if (!entp) 820 if (!entp)
762 break; 821 break;
763 822
764 name = entp->d_name; 823 name = entp->d_name;
765 824
766 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) 825 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767 { 826 {
768 int len = strlen (name) + 1; 827 int len = strlen (name) + 1;
769 828
770 res++; 829 res++;
771 830
772 while (memofs + len > memlen) 831 while (memofs + len > memlen)
773 { 832 {
774 memlen *= 2; 833 memlen *= 2;
775 names = realloc (names, memlen); 834 names = realloc (names, memlen);
776 if (!names) 835 if (!names)
777 break; 836 break;
778 } 837 }
779 838
780 memcpy (names + memofs, name, len); 839 memcpy (names + memofs, name, len);
781 memofs += len; 840 memofs += len;
782 } 841 }
783 } 842 }
784 843
785 errorno = errno; 844 errorno = errno;
845 free (u);
786 closedir (dirp); 846 closedir (dirp);
787 847
788 if (errorno) 848 if (errorno)
789 { 849 {
790 free (names); 850 free (names);
… …
807 { 867 {
808 pthread_mutex_lock (&reqlock); 868 pthread_mutex_lock (&reqlock);
809 869
810 for (;;) 870 for (;;)
811 { 871 {
812 req = reqs; 872 req = reqq_shift (&req_queue);
813
814 if (reqs)
815 {
816 reqs = reqs->next;
817 if (!reqs) reqe = 0;
818 }
819 873
820 if (req) 874 if (req)
821 break; 875 break;
822 876
823 pthread_cond_wait (&reqwait, &reqlock); 877 pthread_cond_wait (&reqwait, &reqlock);
… …
851 905
852 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; 906 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
853 case REQ_FSYNC: req->result = fsync (req->fd); break; 907 case REQ_FSYNC: req->result = fsync (req->fd); break;
854 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; 908 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
855 909
856 case REQ_SLEEP: 910 case REQ_BUSY:
857 { 911 {
858 struct timeval tv; 912 struct timeval tv;
859 913
860 tv.tv_sec = req->fd; 914 tv.tv_sec = req->fd;
861 tv.tv_usec = req->fd2; 915 tv.tv_usec = req->fd2;
… …
875 929
876 req->errorno = errno; 930 req->errorno = errno;
877 931
878 pthread_mutex_lock (&reslock); 932 pthread_mutex_lock (&reslock);
879 933
880 req->next = 0; 934 if (!reqq_push (&res_queue, req))
881
882 if (rese)
883 {
884 rese->next = req;
885 rese = req;
886 }
887 else
888 {
889 rese = ress = req;
890
891 /* write a dummy byte to the pipe so fh becomes ready */ 935 /* write a dummy byte to the pipe so fh becomes ready */
892 write (respipe [1], &respipe, 1); 936 write (respipe [1], &respipe, 1);
893 }
894 937
895 pthread_mutex_unlock (&reslock); 938 pthread_mutex_unlock (&reslock);
896 } 939 }
897 while (type != REQ_QUIT); 940 while (type != REQ_QUIT);
898 941
… …
929{ 972{
930 aio_req prv; 973 aio_req prv;
931 974
932 started = 0; 975 started = 0;
933 976
934 while (reqs) 977 while (prv = reqq_shift (&req_queue))
935 {
936 prv = reqs;
937 reqs = prv->next;
938 req_free (prv); 978 req_free (prv);
939 }
940 979
941 reqs = reqe = 0; 980 while (prv = reqq_shift (&res_queue))
942
943 while (ress)
944 {
945 prv = ress;
946 ress = prv->next;
947 req_free (prv); 981 req_free (prv);
948 } 982
949
950 ress = rese = 0;
951
952 close (respipe [0]); 983 close (respipe [0]);
953 close (respipe [1]); 984 close (respipe [1]);
954 create_pipe (); 985 create_pipe ();
955 986
956 atfork_parent (); 987 atfork_parent ();
… …
1231 1262
1232 REQ_SEND; 1263 REQ_SEND;
1233} 1264}
1234 1265
1235void 1266void
1236aio_sleep (delay,callback=&PL_sv_undef) 1267aio_busy (delay,callback=&PL_sv_undef)
1237 double delay 1268 double delay
1238 SV * callback 1269 SV * callback
1239 PPCODE: 1270 PPCODE:
1240{ 1271{
1241 dREQ; 1272 dREQ;
1242 1273
1243 req->type = REQ_SLEEP; 1274 req->type = REQ_BUSY;
1244 req->fd = delay < 0. ? 0 : delay; 1275 req->fd = delay < 0. ? 0 : delay;
1245 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1276 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1246 1277
1247 REQ_SEND; 1278 REQ_SEND;
1248} 1279}
… …
1271 req->type = REQ_NOP; 1302 req->type = REQ_NOP;
1272 1303
1273 REQ_SEND; 1304 REQ_SEND;
1274} 1305}
1275 1306
1276#if 0
1277
1278void 1307void
1279aio_pri (int pri = DEFAULT_PRI) 1308aioreq_pri (int pri = DEFAULT_PRI)
1280 CODE: 1309 CODE:
1281 if (pri < PRI_MIN) pri = PRI_MIN; 1310 if (pri < PRI_MIN) pri = PRI_MIN;
1282 if (pri > PRI_MAX) pri = PRI_MAX; 1311 if (pri > PRI_MAX) pri = PRI_MAX;
1283 next_pri = pri + PRI_BIAS; 1312 next_pri = pri + PRI_BIAS;
1284 1313
1285#endif 1314void
1315aioreq_nice (int nice = 0)
1316 CODE:
1317 nice = next_pri - nice;
1318 if (nice < PRI_MIN) nice = PRI_MIN;
1319 if (nice > PRI_MAX) nice = PRI_MAX;
1320 next_pri = nice + PRI_BIAS;
1286 1321
1287void 1322void
1288flush () 1323flush ()
1289 PROTOTYPE: 1324 PROTOTYPE:
1290 CODE: 1325 CODE:
… …
1339 1374
1340MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1375MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341 1376
1342void 1377void
1343cancel (aio_req_ornot req) 1378cancel (aio_req_ornot req)
1344 PROTOTYPE:
1345 CODE: 1379 CODE:
1346 req_cancel (req); 1380 req_cancel (req);
1347 1381
1348void 1382void
1349cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1383cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
… …
1399 SvREFCNT_dec (grp->data); 1433 SvREFCNT_dec (grp->data);
1400 grp->data = (SV *)av; 1434 grp->data = (SV *)av;
1401} 1435}
1402 1436
1403void 1437void
1404feed_limit (aio_req grp, int limit) 1438limit (aio_req grp, int limit)
1405 CODE: 1439 CODE:
1406 grp->fd2 = limit; 1440 grp->fd2 = limit;
1407 aio_grp_feed (grp); 1441 aio_grp_feed (grp);
1408 1442
1409void 1443void

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