1 |
#if __linux |
2 |
# define _GNU_SOURCE |
3 |
#endif |
4 |
|
5 |
#define _REENTRANT 1 |
6 |
|
7 |
#include <errno.h> |
8 |
|
9 |
#include "EXTERN.h" |
10 |
#include "perl.h" |
11 |
#include "XSUB.h" |
12 |
|
13 |
#include "autoconf/config.h" |
14 |
|
15 |
#include <pthread.h> |
16 |
|
17 |
#include <stddef.h> |
18 |
#include <errno.h> |
19 |
#include <sys/time.h> |
20 |
#include <sys/select.h> |
21 |
#include <sys/types.h> |
22 |
#include <sys/stat.h> |
23 |
#include <limits.h> |
24 |
#include <unistd.h> |
25 |
#include <fcntl.h> |
26 |
#include <signal.h> |
27 |
#include <sched.h> |
28 |
|
29 |
#if HAVE_SENDFILE |
30 |
# if __linux |
31 |
# include <sys/sendfile.h> |
32 |
# elif __freebsd |
33 |
# include <sys/socket.h> |
34 |
# include <sys/uio.h> |
35 |
# elif __hpux |
36 |
# include <sys/socket.h> |
37 |
# elif __solaris /* not yet */ |
38 |
# include <sys/sendfile.h> |
39 |
# else |
40 |
# error sendfile support requested but not available |
41 |
# endif |
42 |
#endif |
43 |
|
44 |
/* used for struct dirent, AIX doesn't provide it */ |
45 |
#ifndef NAME_MAX |
46 |
# define NAME_MAX 4096 |
47 |
#endif |
48 |
|
49 |
#if __ia64 |
50 |
# define STACKSIZE 65536 |
51 |
#else |
52 |
# define STACKSIZE 8192 |
53 |
#endif |
54 |
|
55 |
enum { |
56 |
REQ_QUIT, |
57 |
REQ_OPEN, REQ_CLOSE, |
58 |
REQ_READ, REQ_WRITE, REQ_READAHEAD, |
59 |
REQ_SENDFILE, |
60 |
REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
61 |
REQ_FSYNC, REQ_FDATASYNC, |
62 |
REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
63 |
REQ_READDIR, |
64 |
REQ_LINK, REQ_SYMLINK, |
65 |
REQ_GROUP, REQ_NOP, |
66 |
REQ_SLEEP, |
67 |
}; |
68 |
|
69 |
#define AIO_REQ_KLASS "IO::AIO::REQ" |
70 |
#define AIO_GRP_KLASS "IO::AIO::GRP" |
71 |
|
72 |
typedef struct aio_cb |
73 |
{ |
74 |
struct aio_cb *volatile next; |
75 |
|
76 |
SV *data, *callback; |
77 |
SV *fh, *fh2; |
78 |
void *dataptr, *data2ptr; |
79 |
Stat_t *statdata; |
80 |
off_t offset; |
81 |
size_t length; |
82 |
ssize_t result; |
83 |
|
84 |
STRLEN dataoffset; |
85 |
int type; |
86 |
int fd, fd2; |
87 |
int errorno; |
88 |
mode_t mode; /* open */ |
89 |
|
90 |
unsigned char flags; |
91 |
unsigned char pri; |
92 |
|
93 |
SV *self; /* the perl counterpart of this request, if any */ |
94 |
struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
95 |
} aio_cb; |
96 |
|
97 |
enum { |
98 |
FLAG_CANCELLED = 0x01, |
99 |
}; |
100 |
|
101 |
typedef aio_cb *aio_req; |
102 |
typedef aio_cb *aio_req_ornot; |
103 |
|
104 |
enum { |
105 |
PRI_MIN = -4, |
106 |
PRI_MAX = 4, |
107 |
|
108 |
DEFAULT_PRI = 0, |
109 |
PRI_BIAS = -PRI_MIN, |
110 |
}; |
111 |
|
112 |
static int next_pri = DEFAULT_PRI + PRI_BIAS; |
113 |
|
114 |
static int started, wanted; |
115 |
static volatile int nreqs; |
116 |
static int max_outstanding = 1<<30; |
117 |
static int respipe [2]; |
118 |
|
119 |
#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
120 |
# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
121 |
#else |
122 |
# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
123 |
#endif |
124 |
|
125 |
static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
126 |
static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
127 |
static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
128 |
|
129 |
static volatile aio_req reqs, reqe; /* queue start, queue end */ |
130 |
static volatile aio_req ress, rese; /* queue start, queue end */ |
131 |
|
132 |
static void req_invoke (aio_req req); |
133 |
static void req_free (aio_req req); |
134 |
|
135 |
/* must be called at most once */ |
136 |
static SV *req_sv (aio_req req, const char *klass) |
137 |
{ |
138 |
if (!req->self) |
139 |
{ |
140 |
req->self = (SV *)newHV (); |
141 |
sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
142 |
} |
143 |
|
144 |
return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
145 |
} |
146 |
|
147 |
static aio_req SvAIO_REQ (SV *sv) |
148 |
{ |
149 |
MAGIC *mg; |
150 |
|
151 |
if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
152 |
croak ("object of class " AIO_REQ_KLASS " expected"); |
153 |
|
154 |
mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
155 |
|
156 |
return mg ? (aio_req)mg->mg_ptr : 0; |
157 |
} |
158 |
|
159 |
static void aio_grp_feed (aio_req grp) |
160 |
{ |
161 |
while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
162 |
{ |
163 |
int old_len = grp->length; |
164 |
|
165 |
if (grp->fh2 && SvOK (grp->fh2)) |
166 |
{ |
167 |
dSP; |
168 |
|
169 |
ENTER; |
170 |
SAVETMPS; |
171 |
PUSHMARK (SP); |
172 |
XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
173 |
PUTBACK; |
174 |
call_sv (grp->fh2, G_VOID | G_EVAL); |
175 |
SPAGAIN; |
176 |
FREETMPS; |
177 |
LEAVE; |
178 |
} |
179 |
|
180 |
/* stop if no progress has been made */ |
181 |
if (old_len == grp->length) |
182 |
{ |
183 |
SvREFCNT_dec (grp->fh2); |
184 |
grp->fh2 = 0; |
185 |
break; |
186 |
} |
187 |
} |
188 |
} |
189 |
|
190 |
static void aio_grp_dec (aio_req grp) |
191 |
{ |
192 |
--grp->length; |
193 |
|
194 |
/* call feeder, if applicable */ |
195 |
aio_grp_feed (grp); |
196 |
|
197 |
/* finish, if done */ |
198 |
if (!grp->length && grp->fd) |
199 |
{ |
200 |
req_invoke (grp); |
201 |
req_free (grp); |
202 |
} |
203 |
} |
204 |
|
205 |
static void poll_wait () |
206 |
{ |
207 |
fd_set rfd; |
208 |
|
209 |
while (nreqs) |
210 |
{ |
211 |
aio_req req; |
212 |
#if !(__x86 || __x86_64) /* safe without sempahore on this archs */ |
213 |
pthread_mutex_lock (&reslock); |
214 |
#endif |
215 |
req = ress; |
216 |
#if !(__x86 || __x86_64) /* safe without sempahore on this archs */ |
217 |
pthread_mutex_unlock (&reslock); |
218 |
#endif |
219 |
|
220 |
if (req) |
221 |
return; |
222 |
|
223 |
FD_ZERO(&rfd); |
224 |
FD_SET(respipe [0], &rfd); |
225 |
|
226 |
select (respipe [0] + 1, &rfd, 0, 0, 0); |
227 |
} |
228 |
} |
229 |
|
230 |
static void req_invoke (aio_req req) |
231 |
{ |
232 |
dSP; |
233 |
int errorno = errno; |
234 |
|
235 |
if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) |
236 |
return; |
237 |
|
238 |
errno = req->errorno; |
239 |
|
240 |
ENTER; |
241 |
SAVETMPS; |
242 |
PUSHMARK (SP); |
243 |
EXTEND (SP, 1); |
244 |
|
245 |
switch (req->type) |
246 |
{ |
247 |
case REQ_READDIR: |
248 |
{ |
249 |
SV *rv = &PL_sv_undef; |
250 |
|
251 |
if (req->result >= 0) |
252 |
{ |
253 |
char *buf = req->data2ptr; |
254 |
AV *av = newAV (); |
255 |
|
256 |
while (req->result) |
257 |
{ |
258 |
SV *sv = newSVpv (buf, 0); |
259 |
|
260 |
av_push (av, sv); |
261 |
buf += SvCUR (sv) + 1; |
262 |
req->result--; |
263 |
} |
264 |
|
265 |
rv = sv_2mortal (newRV_noinc ((SV *)av)); |
266 |
} |
267 |
|
268 |
PUSHs (rv); |
269 |
} |
270 |
break; |
271 |
|
272 |
case REQ_OPEN: |
273 |
{ |
274 |
/* convert fd to fh */ |
275 |
SV *fh; |
276 |
|
277 |
PUSHs (sv_2mortal (newSViv (req->result))); |
278 |
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); |
315 |
SPAGAIN; |
316 |
|
317 |
FREETMPS; |
318 |
LEAVE; |
319 |
|
320 |
errno = errorno; |
321 |
|
322 |
if (SvTRUE (ERRSV)) |
323 |
{ |
324 |
req_free (req); |
325 |
croak (0); |
326 |
} |
327 |
} |
328 |
|
329 |
static void req_free (aio_req req) |
330 |
{ |
331 |
if (req->grp) |
332 |
{ |
333 |
aio_req grp = req->grp; |
334 |
|
335 |
/* unlink request */ |
336 |
if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
337 |
if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
338 |
|
339 |
if (grp->grp_first == req) |
340 |
grp->grp_first = req->grp_next; |
341 |
|
342 |
aio_grp_dec (grp); |
343 |
} |
344 |
|
345 |
if (req->self) |
346 |
{ |
347 |
sv_unmagic (req->self, PERL_MAGIC_ext); |
348 |
SvREFCNT_dec (req->self); |
349 |
} |
350 |
|
351 |
SvREFCNT_dec (req->data); |
352 |
SvREFCNT_dec (req->fh); |
353 |
SvREFCNT_dec (req->fh2); |
354 |
SvREFCNT_dec (req->callback); |
355 |
Safefree (req->statdata); |
356 |
|
357 |
if (req->type == REQ_READDIR && req->result >= 0) |
358 |
free (req->data2ptr); |
359 |
|
360 |
Safefree (req); |
361 |
} |
362 |
|
363 |
static void req_cancel (aio_req req) |
364 |
{ |
365 |
req->flags |= FLAG_CANCELLED; |
366 |
|
367 |
if (req->type == REQ_GROUP) |
368 |
{ |
369 |
aio_req sub; |
370 |
|
371 |
for (sub = req->grp_first; sub; sub = sub->grp_next) |
372 |
req_cancel (sub); |
373 |
} |
374 |
} |
375 |
|
376 |
static int poll_cb () |
377 |
{ |
378 |
dSP; |
379 |
int count = 0; |
380 |
int do_croak = 0; |
381 |
aio_req req; |
382 |
|
383 |
for (;;) |
384 |
{ |
385 |
pthread_mutex_lock (&reslock); |
386 |
req = ress; |
387 |
|
388 |
if (req) |
389 |
{ |
390 |
ress = req->next; |
391 |
|
392 |
if (!ress) |
393 |
{ |
394 |
/* read any signals sent by the worker threads */ |
395 |
char buf [32]; |
396 |
while (read (respipe [0], buf, 32) == 32) |
397 |
; |
398 |
|
399 |
rese = 0; |
400 |
} |
401 |
} |
402 |
|
403 |
pthread_mutex_unlock (&reslock); |
404 |
|
405 |
if (!req) |
406 |
break; |
407 |
|
408 |
--nreqs; |
409 |
|
410 |
if (req->type == REQ_QUIT) |
411 |
started--; |
412 |
else if (req->type == REQ_GROUP && req->length) |
413 |
{ |
414 |
req->fd = 1; /* mark request as delayed */ |
415 |
continue; |
416 |
} |
417 |
else |
418 |
{ |
419 |
if (req->type == REQ_READ) |
420 |
SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
421 |
|
422 |
if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
423 |
SvREADONLY_off (req->data); |
424 |
|
425 |
if (req->statdata) |
426 |
{ |
427 |
PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
428 |
PL_laststatval = req->result; |
429 |
PL_statcache = *(req->statdata); |
430 |
} |
431 |
|
432 |
req_invoke (req); |
433 |
|
434 |
count++; |
435 |
} |
436 |
|
437 |
req_free (req); |
438 |
} |
439 |
|
440 |
return count; |
441 |
} |
442 |
|
443 |
static void *aio_proc(void *arg); |
444 |
|
445 |
static void start_thread (void) |
446 |
{ |
447 |
sigset_t fullsigset, oldsigset; |
448 |
pthread_t tid; |
449 |
pthread_attr_t attr; |
450 |
|
451 |
pthread_attr_init (&attr); |
452 |
pthread_attr_setstacksize (&attr, STACKSIZE); |
453 |
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
454 |
|
455 |
sigfillset (&fullsigset); |
456 |
sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
457 |
|
458 |
if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
459 |
started++; |
460 |
|
461 |
sigprocmask (SIG_SETMASK, &oldsigset, 0); |
462 |
} |
463 |
|
464 |
static void req_send (aio_req req) |
465 |
{ |
466 |
while (started < wanted && nreqs >= started) |
467 |
start_thread (); |
468 |
|
469 |
++nreqs; |
470 |
|
471 |
pthread_mutex_lock (&reqlock); |
472 |
|
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); |
484 |
pthread_mutex_unlock (&reqlock); |
485 |
|
486 |
if (nreqs > max_outstanding) |
487 |
for (;;) |
488 |
{ |
489 |
poll_cb (); |
490 |
|
491 |
if (nreqs <= max_outstanding) |
492 |
break; |
493 |
|
494 |
poll_wait (); |
495 |
} |
496 |
} |
497 |
|
498 |
static void end_thread (void) |
499 |
{ |
500 |
aio_req req; |
501 |
Newz (0, req, 1, aio_cb); |
502 |
req->type = REQ_QUIT; |
503 |
|
504 |
req_send (req); |
505 |
} |
506 |
|
507 |
static void min_parallel (int nthreads) |
508 |
{ |
509 |
if (wanted < nthreads) |
510 |
wanted = nthreads; |
511 |
} |
512 |
|
513 |
static void max_parallel (int nthreads) |
514 |
{ |
515 |
int cur = started; |
516 |
|
517 |
if (wanted > nthreads) |
518 |
wanted = nthreads; |
519 |
|
520 |
while (cur > wanted) |
521 |
{ |
522 |
end_thread (); |
523 |
cur--; |
524 |
} |
525 |
|
526 |
while (started > wanted) |
527 |
{ |
528 |
poll_wait (); |
529 |
poll_cb (); |
530 |
} |
531 |
} |
532 |
|
533 |
static void create_pipe () |
534 |
{ |
535 |
if (pipe (respipe)) |
536 |
croak ("unable to initialize result pipe"); |
537 |
|
538 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
539 |
croak ("cannot set result pipe to nonblocking mode"); |
540 |
|
541 |
if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
542 |
croak ("cannot set result pipe to nonblocking mode"); |
543 |
} |
544 |
|
545 |
/*****************************************************************************/ |
546 |
/* work around various missing functions */ |
547 |
|
548 |
#if !HAVE_PREADWRITE |
549 |
# define pread aio_pread |
550 |
# define pwrite aio_pwrite |
551 |
|
552 |
/* |
553 |
* make our pread/pwrite safe against themselves, but not against |
554 |
* normal read/write by using a mutex. slows down execution a lot, |
555 |
* but that's your problem, not mine. |
556 |
*/ |
557 |
static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
558 |
|
559 |
static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
560 |
{ |
561 |
ssize_t res; |
562 |
off_t ooffset; |
563 |
|
564 |
pthread_mutex_lock (&preadwritelock); |
565 |
ooffset = lseek (fd, 0, SEEK_CUR); |
566 |
lseek (fd, offset, SEEK_SET); |
567 |
res = read (fd, buf, count); |
568 |
lseek (fd, ooffset, SEEK_SET); |
569 |
pthread_mutex_unlock (&preadwritelock); |
570 |
|
571 |
return res; |
572 |
} |
573 |
|
574 |
static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
575 |
{ |
576 |
ssize_t res; |
577 |
off_t ooffset; |
578 |
|
579 |
pthread_mutex_lock (&preadwritelock); |
580 |
ooffset = lseek (fd, 0, SEEK_CUR); |
581 |
lseek (fd, offset, SEEK_SET); |
582 |
res = write (fd, buf, count); |
583 |
lseek (fd, offset, SEEK_SET); |
584 |
pthread_mutex_unlock (&preadwritelock); |
585 |
|
586 |
return res; |
587 |
} |
588 |
#endif |
589 |
|
590 |
#if !HAVE_FDATASYNC |
591 |
# define fdatasync fsync |
592 |
#endif |
593 |
|
594 |
#if !HAVE_READAHEAD |
595 |
# define readahead aio_readahead |
596 |
|
597 |
static ssize_t readahead (int fd, off_t offset, size_t count) |
598 |
{ |
599 |
char readahead_buf[4096]; |
600 |
|
601 |
while (count > 0) |
602 |
{ |
603 |
size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
604 |
|
605 |
pread (fd, readahead_buf, len, offset); |
606 |
offset += len; |
607 |
count -= len; |
608 |
} |
609 |
|
610 |
errno = 0; |
611 |
} |
612 |
#endif |
613 |
|
614 |
#if !HAVE_READDIR_R |
615 |
# define readdir_r aio_readdir_r |
616 |
|
617 |
static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
618 |
|
619 |
static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
620 |
{ |
621 |
struct dirent *e; |
622 |
int errorno; |
623 |
|
624 |
pthread_mutex_lock (&readdirlock); |
625 |
|
626 |
e = readdir (dirp); |
627 |
errorno = errno; |
628 |
|
629 |
if (e) |
630 |
{ |
631 |
*res = ent; |
632 |
strcpy (ent->d_name, e->d_name); |
633 |
} |
634 |
else |
635 |
*res = 0; |
636 |
|
637 |
pthread_mutex_unlock (&readdirlock); |
638 |
|
639 |
errno = errorno; |
640 |
return e ? 0 : -1; |
641 |
} |
642 |
#endif |
643 |
|
644 |
/* sendfile always needs emulation */ |
645 |
static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
646 |
{ |
647 |
ssize_t res; |
648 |
|
649 |
if (!count) |
650 |
return 0; |
651 |
|
652 |
#if HAVE_SENDFILE |
653 |
# if __linux |
654 |
res = sendfile (ofd, ifd, &offset, count); |
655 |
|
656 |
# elif __freebsd |
657 |
/* |
658 |
* Of course, the freebsd sendfile is a dire hack with no thoughts |
659 |
* wasted on making it similar to other I/O functions. |
660 |
*/ |
661 |
{ |
662 |
off_t sbytes; |
663 |
res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
664 |
|
665 |
if (res < 0 && sbytes) |
666 |
/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
667 |
res = sbytes; |
668 |
} |
669 |
|
670 |
# elif __hpux |
671 |
res = sendfile (ofd, ifd, offset, count, 0, 0); |
672 |
|
673 |
# elif __solaris |
674 |
{ |
675 |
struct sendfilevec vec; |
676 |
size_t sbytes; |
677 |
|
678 |
vec.sfv_fd = ifd; |
679 |
vec.sfv_flag = 0; |
680 |
vec.sfv_off = offset; |
681 |
vec.sfv_len = count; |
682 |
|
683 |
res = sendfilev (ofd, &vec, 1, &sbytes); |
684 |
|
685 |
if (res < 0 && sbytes) |
686 |
res = sbytes; |
687 |
} |
688 |
|
689 |
# endif |
690 |
#else |
691 |
res = -1; |
692 |
errno = ENOSYS; |
693 |
#endif |
694 |
|
695 |
if (res < 0 |
696 |
&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
697 |
#if __solaris |
698 |
|| errno == EAFNOSUPPORT || errno == EPROTOTYPE |
699 |
#endif |
700 |
) |
701 |
) |
702 |
{ |
703 |
/* emulate sendfile. this is a major pain in the ass */ |
704 |
char buf[4096]; |
705 |
res = 0; |
706 |
|
707 |
while (count) |
708 |
{ |
709 |
ssize_t cnt; |
710 |
|
711 |
cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
712 |
|
713 |
if (cnt <= 0) |
714 |
{ |
715 |
if (cnt && !res) res = -1; |
716 |
break; |
717 |
} |
718 |
|
719 |
cnt = write (ofd, buf, cnt); |
720 |
|
721 |
if (cnt <= 0) |
722 |
{ |
723 |
if (cnt && !res) res = -1; |
724 |
break; |
725 |
} |
726 |
|
727 |
offset += cnt; |
728 |
res += cnt; |
729 |
count -= cnt; |
730 |
} |
731 |
} |
732 |
|
733 |
return res; |
734 |
} |
735 |
|
736 |
/* read a full directory */ |
737 |
static int scandir_ (const char *path, void **namesp) |
738 |
{ |
739 |
DIR *dirp = opendir (path); |
740 |
union |
741 |
{ |
742 |
struct dirent d; |
743 |
char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
744 |
} u; |
745 |
struct dirent *entp; |
746 |
char *name, *names; |
747 |
int memlen = 4096; |
748 |
int memofs = 0; |
749 |
int res = 0; |
750 |
int errorno; |
751 |
|
752 |
if (!dirp) |
753 |
return -1; |
754 |
|
755 |
names = malloc (memlen); |
756 |
|
757 |
for (;;) |
758 |
{ |
759 |
errno = 0, readdir_r (dirp, &u.d, &entp); |
760 |
|
761 |
if (!entp) |
762 |
break; |
763 |
|
764 |
name = entp->d_name; |
765 |
|
766 |
if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
767 |
{ |
768 |
int len = strlen (name) + 1; |
769 |
|
770 |
res++; |
771 |
|
772 |
while (memofs + len > memlen) |
773 |
{ |
774 |
memlen *= 2; |
775 |
names = realloc (names, memlen); |
776 |
if (!names) |
777 |
break; |
778 |
} |
779 |
|
780 |
memcpy (names + memofs, name, len); |
781 |
memofs += len; |
782 |
} |
783 |
} |
784 |
|
785 |
errorno = errno; |
786 |
closedir (dirp); |
787 |
|
788 |
if (errorno) |
789 |
{ |
790 |
free (names); |
791 |
errno = errorno; |
792 |
res = -1; |
793 |
} |
794 |
|
795 |
*namesp = (void *)names; |
796 |
return res; |
797 |
} |
798 |
|
799 |
/*****************************************************************************/ |
800 |
|
801 |
static void *aio_proc (void *thr_arg) |
802 |
{ |
803 |
aio_req req; |
804 |
int type; |
805 |
|
806 |
do |
807 |
{ |
808 |
pthread_mutex_lock (&reqlock); |
809 |
|
810 |
for (;;) |
811 |
{ |
812 |
req = reqs; |
813 |
|
814 |
if (reqs) |
815 |
{ |
816 |
reqs = reqs->next; |
817 |
if (!reqs) reqe = 0; |
818 |
} |
819 |
|
820 |
if (req) |
821 |
break; |
822 |
|
823 |
pthread_cond_wait (&reqwait, &reqlock); |
824 |
} |
825 |
|
826 |
pthread_mutex_unlock (&reqlock); |
827 |
|
828 |
errno = 0; /* strictly unnecessary */ |
829 |
type = req->type; /* remember type for QUIT check */ |
830 |
|
831 |
if (!(req->flags & FLAG_CANCELLED)) |
832 |
switch (type) |
833 |
{ |
834 |
case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
835 |
case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
836 |
|
837 |
case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
838 |
case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
839 |
|
840 |
case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
841 |
case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
842 |
case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
843 |
|
844 |
case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
845 |
case REQ_CLOSE: req->result = close (req->fd); break; |
846 |
case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
847 |
case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
848 |
case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
849 |
case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
850 |
case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
851 |
|
852 |
case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
853 |
case REQ_FSYNC: req->result = fsync (req->fd); break; |
854 |
case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
855 |
|
856 |
case REQ_SLEEP: |
857 |
{ |
858 |
struct timeval tv; |
859 |
|
860 |
tv.tv_sec = req->fd; |
861 |
tv.tv_usec = req->fd2; |
862 |
|
863 |
req->result = select (0, 0, 0, 0, &tv); |
864 |
} |
865 |
|
866 |
case REQ_GROUP: |
867 |
case REQ_NOP: |
868 |
case REQ_QUIT: |
869 |
break; |
870 |
|
871 |
default: |
872 |
req->result = ENOSYS; |
873 |
break; |
874 |
} |
875 |
|
876 |
req->errorno = errno; |
877 |
|
878 |
pthread_mutex_lock (&reslock); |
879 |
|
880 |
req->next = 0; |
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 */ |
892 |
write (respipe [1], &respipe, 1); |
893 |
} |
894 |
|
895 |
pthread_mutex_unlock (&reslock); |
896 |
} |
897 |
while (type != REQ_QUIT); |
898 |
|
899 |
return 0; |
900 |
} |
901 |
|
902 |
/*****************************************************************************/ |
903 |
|
904 |
static void atfork_prepare (void) |
905 |
{ |
906 |
pthread_mutex_lock (&reqlock); |
907 |
pthread_mutex_lock (&reslock); |
908 |
#if !HAVE_PREADWRITE |
909 |
pthread_mutex_lock (&preadwritelock); |
910 |
#endif |
911 |
#if !HAVE_READDIR_R |
912 |
pthread_mutex_lock (&readdirlock); |
913 |
#endif |
914 |
} |
915 |
|
916 |
static void atfork_parent (void) |
917 |
{ |
918 |
#if !HAVE_READDIR_R |
919 |
pthread_mutex_unlock (&readdirlock); |
920 |
#endif |
921 |
#if !HAVE_PREADWRITE |
922 |
pthread_mutex_unlock (&preadwritelock); |
923 |
#endif |
924 |
pthread_mutex_unlock (&reslock); |
925 |
pthread_mutex_unlock (&reqlock); |
926 |
} |
927 |
|
928 |
static void atfork_child (void) |
929 |
{ |
930 |
aio_req prv; |
931 |
|
932 |
started = 0; |
933 |
|
934 |
while (reqs) |
935 |
{ |
936 |
prv = reqs; |
937 |
reqs = prv->next; |
938 |
req_free (prv); |
939 |
} |
940 |
|
941 |
reqs = reqe = 0; |
942 |
|
943 |
while (ress) |
944 |
{ |
945 |
prv = ress; |
946 |
ress = prv->next; |
947 |
req_free (prv); |
948 |
} |
949 |
|
950 |
ress = rese = 0; |
951 |
|
952 |
close (respipe [0]); |
953 |
close (respipe [1]); |
954 |
create_pipe (); |
955 |
|
956 |
atfork_parent (); |
957 |
} |
958 |
|
959 |
#define dREQ \ |
960 |
aio_req req; \ |
961 |
int req_pri = next_pri; \ |
962 |
next_pri = DEFAULT_PRI + PRI_BIAS; \ |
963 |
\ |
964 |
if (SvOK (callback) && !SvROK (callback)) \ |
965 |
croak ("callback must be undef or of reference type"); \ |
966 |
\ |
967 |
Newz (0, req, 1, aio_cb); \ |
968 |
if (!req) \ |
969 |
croak ("out of memory during aio_req allocation"); \ |
970 |
\ |
971 |
req->callback = newSVsv (callback); \ |
972 |
req->pri = req_pri |
973 |
|
974 |
#define REQ_SEND \ |
975 |
req_send (req); \ |
976 |
\ |
977 |
if (GIMME_V != G_VOID) \ |
978 |
XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
979 |
|
980 |
MODULE = IO::AIO PACKAGE = IO::AIO |
981 |
|
982 |
PROTOTYPES: ENABLE |
983 |
|
984 |
BOOT: |
985 |
{ |
986 |
HV *stash = gv_stashpv ("IO::AIO", 1); |
987 |
newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
988 |
newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
989 |
newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
990 |
|
991 |
create_pipe (); |
992 |
pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
993 |
} |
994 |
|
995 |
void |
996 |
min_parallel (nthreads) |
997 |
int nthreads |
998 |
PROTOTYPE: $ |
999 |
|
1000 |
void |
1001 |
max_parallel (nthreads) |
1002 |
int nthreads |
1003 |
PROTOTYPE: $ |
1004 |
|
1005 |
int |
1006 |
max_outstanding (nreqs) |
1007 |
int nreqs |
1008 |
PROTOTYPE: $ |
1009 |
CODE: |
1010 |
RETVAL = max_outstanding; |
1011 |
max_outstanding = nreqs; |
1012 |
|
1013 |
void |
1014 |
aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
1015 |
SV * pathname |
1016 |
int flags |
1017 |
int mode |
1018 |
SV * callback |
1019 |
PROTOTYPE: $$$;$ |
1020 |
PPCODE: |
1021 |
{ |
1022 |
dREQ; |
1023 |
|
1024 |
req->type = REQ_OPEN; |
1025 |
req->data = newSVsv (pathname); |
1026 |
req->dataptr = SvPVbyte_nolen (req->data); |
1027 |
req->fd = flags; |
1028 |
req->mode = mode; |
1029 |
|
1030 |
REQ_SEND; |
1031 |
} |
1032 |
|
1033 |
void |
1034 |
aio_close (fh,callback=&PL_sv_undef) |
1035 |
SV * fh |
1036 |
SV * callback |
1037 |
PROTOTYPE: $;$ |
1038 |
ALIAS: |
1039 |
aio_close = REQ_CLOSE |
1040 |
aio_fsync = REQ_FSYNC |
1041 |
aio_fdatasync = REQ_FDATASYNC |
1042 |
PPCODE: |
1043 |
{ |
1044 |
dREQ; |
1045 |
|
1046 |
req->type = ix; |
1047 |
req->fh = newSVsv (fh); |
1048 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1049 |
|
1050 |
REQ_SEND (req); |
1051 |
} |
1052 |
|
1053 |
void |
1054 |
aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
1055 |
SV * fh |
1056 |
UV offset |
1057 |
UV length |
1058 |
SV * data |
1059 |
UV dataoffset |
1060 |
SV * callback |
1061 |
ALIAS: |
1062 |
aio_read = REQ_READ |
1063 |
aio_write = REQ_WRITE |
1064 |
PROTOTYPE: $$$$$;$ |
1065 |
PPCODE: |
1066 |
{ |
1067 |
aio_req req; |
1068 |
STRLEN svlen; |
1069 |
char *svptr = SvPVbyte (data, svlen); |
1070 |
|
1071 |
SvUPGRADE (data, SVt_PV); |
1072 |
SvPOK_on (data); |
1073 |
|
1074 |
if (dataoffset < 0) |
1075 |
dataoffset += svlen; |
1076 |
|
1077 |
if (dataoffset < 0 || dataoffset > svlen) |
1078 |
croak ("data offset outside of string"); |
1079 |
|
1080 |
if (ix == REQ_WRITE) |
1081 |
{ |
1082 |
/* write: check length and adjust. */ |
1083 |
if (length < 0 || length + dataoffset > svlen) |
1084 |
length = svlen - dataoffset; |
1085 |
} |
1086 |
else |
1087 |
{ |
1088 |
/* read: grow scalar as necessary */ |
1089 |
svptr = SvGROW (data, length + dataoffset); |
1090 |
} |
1091 |
|
1092 |
if (length < 0) |
1093 |
croak ("length must not be negative"); |
1094 |
|
1095 |
{ |
1096 |
dREQ; |
1097 |
|
1098 |
req->type = ix; |
1099 |
req->fh = newSVsv (fh); |
1100 |
req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
1101 |
: IoOFP (sv_2io (fh))); |
1102 |
req->offset = offset; |
1103 |
req->length = length; |
1104 |
req->data = SvREFCNT_inc (data); |
1105 |
req->dataptr = (char *)svptr + dataoffset; |
1106 |
|
1107 |
if (!SvREADONLY (data)) |
1108 |
{ |
1109 |
SvREADONLY_on (data); |
1110 |
req->data2ptr = (void *)data; |
1111 |
} |
1112 |
|
1113 |
REQ_SEND; |
1114 |
} |
1115 |
} |
1116 |
|
1117 |
void |
1118 |
aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
1119 |
SV * out_fh |
1120 |
SV * in_fh |
1121 |
UV in_offset |
1122 |
UV length |
1123 |
SV * callback |
1124 |
PROTOTYPE: $$$$;$ |
1125 |
PPCODE: |
1126 |
{ |
1127 |
dREQ; |
1128 |
|
1129 |
req->type = REQ_SENDFILE; |
1130 |
req->fh = newSVsv (out_fh); |
1131 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
1132 |
req->fh2 = newSVsv (in_fh); |
1133 |
req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
1134 |
req->offset = in_offset; |
1135 |
req->length = length; |
1136 |
|
1137 |
REQ_SEND; |
1138 |
} |
1139 |
|
1140 |
void |
1141 |
aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
1142 |
SV * fh |
1143 |
UV offset |
1144 |
IV length |
1145 |
SV * callback |
1146 |
PROTOTYPE: $$$;$ |
1147 |
PPCODE: |
1148 |
{ |
1149 |
dREQ; |
1150 |
|
1151 |
req->type = REQ_READAHEAD; |
1152 |
req->fh = newSVsv (fh); |
1153 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1154 |
req->offset = offset; |
1155 |
req->length = length; |
1156 |
|
1157 |
REQ_SEND; |
1158 |
} |
1159 |
|
1160 |
void |
1161 |
aio_stat (fh_or_path,callback=&PL_sv_undef) |
1162 |
SV * fh_or_path |
1163 |
SV * callback |
1164 |
ALIAS: |
1165 |
aio_stat = REQ_STAT |
1166 |
aio_lstat = REQ_LSTAT |
1167 |
PPCODE: |
1168 |
{ |
1169 |
dREQ; |
1170 |
|
1171 |
New (0, req->statdata, 1, Stat_t); |
1172 |
if (!req->statdata) |
1173 |
{ |
1174 |
req_free (req); |
1175 |
croak ("out of memory during aio_req->statdata allocation"); |
1176 |
} |
1177 |
|
1178 |
if (SvPOK (fh_or_path)) |
1179 |
{ |
1180 |
req->type = ix; |
1181 |
req->data = newSVsv (fh_or_path); |
1182 |
req->dataptr = SvPVbyte_nolen (req->data); |
1183 |
} |
1184 |
else |
1185 |
{ |
1186 |
req->type = REQ_FSTAT; |
1187 |
req->fh = newSVsv (fh_or_path); |
1188 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1189 |
} |
1190 |
|
1191 |
REQ_SEND; |
1192 |
} |
1193 |
|
1194 |
void |
1195 |
aio_unlink (pathname,callback=&PL_sv_undef) |
1196 |
SV * pathname |
1197 |
SV * callback |
1198 |
ALIAS: |
1199 |
aio_unlink = REQ_UNLINK |
1200 |
aio_rmdir = REQ_RMDIR |
1201 |
aio_readdir = REQ_READDIR |
1202 |
PPCODE: |
1203 |
{ |
1204 |
dREQ; |
1205 |
|
1206 |
req->type = ix; |
1207 |
req->data = newSVsv (pathname); |
1208 |
req->dataptr = SvPVbyte_nolen (req->data); |
1209 |
|
1210 |
REQ_SEND; |
1211 |
} |
1212 |
|
1213 |
void |
1214 |
aio_link (oldpath,newpath,callback=&PL_sv_undef) |
1215 |
SV * oldpath |
1216 |
SV * newpath |
1217 |
SV * callback |
1218 |
ALIAS: |
1219 |
aio_link = REQ_LINK |
1220 |
aio_symlink = REQ_SYMLINK |
1221 |
aio_rename = REQ_RENAME |
1222 |
PPCODE: |
1223 |
{ |
1224 |
dREQ; |
1225 |
|
1226 |
req->type = ix; |
1227 |
req->fh = newSVsv (oldpath); |
1228 |
req->data2ptr = SvPVbyte_nolen (req->fh); |
1229 |
req->data = newSVsv (newpath); |
1230 |
req->dataptr = SvPVbyte_nolen (req->data); |
1231 |
|
1232 |
REQ_SEND; |
1233 |
} |
1234 |
|
1235 |
void |
1236 |
aio_sleep (delay,callback=&PL_sv_undef) |
1237 |
double delay |
1238 |
SV * callback |
1239 |
PPCODE: |
1240 |
{ |
1241 |
dREQ; |
1242 |
|
1243 |
req->type = REQ_SLEEP; |
1244 |
req->fd = delay < 0. ? 0 : delay; |
1245 |
req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1246 |
|
1247 |
REQ_SEND; |
1248 |
} |
1249 |
|
1250 |
void |
1251 |
aio_group (callback=&PL_sv_undef) |
1252 |
SV * callback |
1253 |
PROTOTYPE: ;$ |
1254 |
PPCODE: |
1255 |
{ |
1256 |
dREQ; |
1257 |
|
1258 |
req->type = REQ_GROUP; |
1259 |
req_send (req); |
1260 |
|
1261 |
XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1262 |
} |
1263 |
|
1264 |
void |
1265 |
aio_nop (callback=&PL_sv_undef) |
1266 |
SV * callback |
1267 |
PPCODE: |
1268 |
{ |
1269 |
dREQ; |
1270 |
|
1271 |
req->type = REQ_NOP; |
1272 |
|
1273 |
REQ_SEND; |
1274 |
} |
1275 |
|
1276 |
#if 0 |
1277 |
|
1278 |
void |
1279 |
aio_pri (int pri = DEFAULT_PRI) |
1280 |
CODE: |
1281 |
if (pri < PRI_MIN) pri = PRI_MIN; |
1282 |
if (pri > PRI_MAX) pri = PRI_MAX; |
1283 |
next_pri = pri + PRI_BIAS; |
1284 |
|
1285 |
#endif |
1286 |
|
1287 |
void |
1288 |
flush () |
1289 |
PROTOTYPE: |
1290 |
CODE: |
1291 |
while (nreqs) |
1292 |
{ |
1293 |
poll_wait (); |
1294 |
poll_cb (); |
1295 |
} |
1296 |
|
1297 |
void |
1298 |
poll() |
1299 |
PROTOTYPE: |
1300 |
CODE: |
1301 |
if (nreqs) |
1302 |
{ |
1303 |
poll_wait (); |
1304 |
poll_cb (); |
1305 |
} |
1306 |
|
1307 |
int |
1308 |
poll_fileno() |
1309 |
PROTOTYPE: |
1310 |
CODE: |
1311 |
RETVAL = respipe [0]; |
1312 |
OUTPUT: |
1313 |
RETVAL |
1314 |
|
1315 |
int |
1316 |
poll_cb(...) |
1317 |
PROTOTYPE: |
1318 |
CODE: |
1319 |
RETVAL = poll_cb (); |
1320 |
OUTPUT: |
1321 |
RETVAL |
1322 |
|
1323 |
void |
1324 |
poll_wait() |
1325 |
PROTOTYPE: |
1326 |
CODE: |
1327 |
if (nreqs) |
1328 |
poll_wait (); |
1329 |
|
1330 |
int |
1331 |
nreqs() |
1332 |
PROTOTYPE: |
1333 |
CODE: |
1334 |
RETVAL = nreqs; |
1335 |
OUTPUT: |
1336 |
RETVAL |
1337 |
|
1338 |
PROTOTYPES: DISABLE |
1339 |
|
1340 |
MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1341 |
|
1342 |
void |
1343 |
cancel (aio_req_ornot req) |
1344 |
PROTOTYPE: |
1345 |
CODE: |
1346 |
req_cancel (req); |
1347 |
|
1348 |
void |
1349 |
cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
1350 |
CODE: |
1351 |
SvREFCNT_dec (req->callback); |
1352 |
req->callback = newSVsv (callback); |
1353 |
|
1354 |
MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1355 |
|
1356 |
void |
1357 |
add (aio_req grp, ...) |
1358 |
PPCODE: |
1359 |
{ |
1360 |
int i; |
1361 |
aio_req req; |
1362 |
|
1363 |
if (grp->fd == 2) |
1364 |
croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1365 |
|
1366 |
for (i = 1; i < items; ++i ) |
1367 |
{ |
1368 |
if (GIMME_V != G_VOID) |
1369 |
XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1370 |
|
1371 |
req = SvAIO_REQ (ST (i)); |
1372 |
|
1373 |
if (req) |
1374 |
{ |
1375 |
++grp->length; |
1376 |
req->grp = grp; |
1377 |
|
1378 |
req->grp_prev = 0; |
1379 |
req->grp_next = grp->grp_first; |
1380 |
|
1381 |
if (grp->grp_first) |
1382 |
grp->grp_first->grp_prev = req; |
1383 |
|
1384 |
grp->grp_first = req; |
1385 |
} |
1386 |
} |
1387 |
} |
1388 |
|
1389 |
void |
1390 |
result (aio_req grp, ...) |
1391 |
CODE: |
1392 |
{ |
1393 |
int i; |
1394 |
AV *av = newAV (); |
1395 |
|
1396 |
for (i = 1; i < items; ++i ) |
1397 |
av_push (av, newSVsv (ST (i))); |
1398 |
|
1399 |
SvREFCNT_dec (grp->data); |
1400 |
grp->data = (SV *)av; |
1401 |
} |
1402 |
|
1403 |
void |
1404 |
feed_limit (aio_req grp, int limit) |
1405 |
CODE: |
1406 |
grp->fd2 = limit; |
1407 |
aio_grp_feed (grp); |
1408 |
|
1409 |
void |
1410 |
feed (aio_req grp, SV *callback=&PL_sv_undef) |
1411 |
CODE: |
1412 |
{ |
1413 |
SvREFCNT_dec (grp->fh2); |
1414 |
grp->fh2 = newSVsv (callback); |
1415 |
|
1416 |
if (grp->fd2 <= 0) |
1417 |
grp->fd2 = 2; |
1418 |
|
1419 |
aio_grp_feed (grp); |
1420 |
} |
1421 |
|