1 |
#define _REENTRANT 1 |
2 |
#include <errno.h> |
3 |
|
4 |
#include "EXTERN.h" |
5 |
#include "perl.h" |
6 |
#include "XSUB.h" |
7 |
|
8 |
#include "autoconf/config.h" |
9 |
|
10 |
#include <pthread.h> |
11 |
|
12 |
#include <sys/types.h> |
13 |
#include <sys/stat.h> |
14 |
|
15 |
#include <unistd.h> |
16 |
#include <fcntl.h> |
17 |
#include <signal.h> |
18 |
#include <sched.h> |
19 |
|
20 |
#if HAVE_SENDFILE |
21 |
# if __linux |
22 |
# include <sys/sendfile.h> |
23 |
# elif __freebsd |
24 |
# include <sys/socket.h> |
25 |
# include <sys/uio.h> |
26 |
# elif __hpux |
27 |
# include <sys/socket.h> |
28 |
# else |
29 |
# error sendfile support requested but not available |
30 |
# endif |
31 |
#endif |
32 |
|
33 |
#if __ia64 |
34 |
# define STACKSIZE 65536 |
35 |
#else |
36 |
# define STACKSIZE 4096 |
37 |
#endif |
38 |
|
39 |
enum { |
40 |
REQ_QUIT, |
41 |
REQ_OPEN, REQ_CLOSE, |
42 |
REQ_READ, REQ_WRITE, REQ_READAHEAD, |
43 |
REQ_SENDFILE, |
44 |
REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
45 |
REQ_FSYNC, REQ_FDATASYNC, |
46 |
REQ_UNLINK, REQ_RMDIR, |
47 |
REQ_SYMLINK, |
48 |
}; |
49 |
|
50 |
typedef struct aio_cb { |
51 |
struct aio_cb *volatile next; |
52 |
|
53 |
int type; |
54 |
|
55 |
int fd, fd2; |
56 |
off_t offset; |
57 |
size_t length; |
58 |
ssize_t result; |
59 |
mode_t mode; /* open */ |
60 |
int errorno; |
61 |
SV *data, *callback; |
62 |
SV *fh, *fh2; |
63 |
void *dataptr, *data2ptr; |
64 |
STRLEN dataoffset; |
65 |
|
66 |
Stat_t *statdata; |
67 |
} aio_cb; |
68 |
|
69 |
typedef aio_cb *aio_req; |
70 |
|
71 |
static int started, wanted; |
72 |
static volatile int nreqs; |
73 |
static int max_outstanding = 1<<30; |
74 |
static int respipe [2]; |
75 |
|
76 |
static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
77 |
static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
78 |
static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
79 |
|
80 |
static volatile aio_req reqs, reqe; /* queue start, queue end */ |
81 |
static volatile aio_req ress, rese; /* queue start, queue end */ |
82 |
|
83 |
static void free_req (aio_req req) |
84 |
{ |
85 |
if (req->data) |
86 |
SvREFCNT_dec (req->data); |
87 |
|
88 |
if (req->fh) |
89 |
SvREFCNT_dec (req->fh); |
90 |
|
91 |
if (req->fh2) |
92 |
SvREFCNT_dec (req->fh2); |
93 |
|
94 |
if (req->statdata) |
95 |
Safefree (req->statdata); |
96 |
|
97 |
if (req->callback) |
98 |
SvREFCNT_dec (req->callback); |
99 |
|
100 |
Safefree (req); |
101 |
} |
102 |
|
103 |
static void |
104 |
poll_wait () |
105 |
{ |
106 |
if (nreqs && !ress) |
107 |
{ |
108 |
fd_set rfd; |
109 |
FD_ZERO(&rfd); |
110 |
FD_SET(respipe [0], &rfd); |
111 |
|
112 |
select (respipe [0] + 1, &rfd, 0, 0, 0); |
113 |
} |
114 |
} |
115 |
|
116 |
static int |
117 |
poll_cb () |
118 |
{ |
119 |
dSP; |
120 |
int count = 0; |
121 |
int do_croak = 0; |
122 |
aio_req req; |
123 |
|
124 |
for (;;) |
125 |
{ |
126 |
pthread_mutex_lock (&reslock); |
127 |
req = ress; |
128 |
|
129 |
if (req) |
130 |
{ |
131 |
ress = req->next; |
132 |
|
133 |
if (!ress) |
134 |
{ |
135 |
/* read any signals sent by the worker threads */ |
136 |
char buf [32]; |
137 |
while (read (respipe [0], buf, 32) == 32) |
138 |
; |
139 |
|
140 |
rese = 0; |
141 |
} |
142 |
} |
143 |
|
144 |
pthread_mutex_unlock (&reslock); |
145 |
|
146 |
if (!req) |
147 |
break; |
148 |
|
149 |
nreqs--; |
150 |
|
151 |
if (req->type == REQ_QUIT) |
152 |
started--; |
153 |
else |
154 |
{ |
155 |
int errorno = errno; |
156 |
errno = req->errorno; |
157 |
|
158 |
if (req->type == REQ_READ) |
159 |
SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
160 |
|
161 |
if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
162 |
SvREADONLY_off (req->data); |
163 |
|
164 |
if (req->statdata) |
165 |
{ |
166 |
PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
167 |
PL_laststatval = req->result; |
168 |
PL_statcache = *(req->statdata); |
169 |
} |
170 |
|
171 |
ENTER; |
172 |
PUSHMARK (SP); |
173 |
XPUSHs (sv_2mortal (newSViv (req->result))); |
174 |
|
175 |
if (req->type == REQ_OPEN) |
176 |
{ |
177 |
/* convert fd to fh */ |
178 |
SV *fh; |
179 |
|
180 |
PUTBACK; |
181 |
call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
182 |
SPAGAIN; |
183 |
|
184 |
fh = SvREFCNT_inc (POPs); |
185 |
|
186 |
PUSHMARK (SP); |
187 |
XPUSHs (sv_2mortal (fh)); |
188 |
} |
189 |
|
190 |
if (SvOK (req->callback)) |
191 |
{ |
192 |
PUTBACK; |
193 |
call_sv (req->callback, G_VOID | G_EVAL); |
194 |
SPAGAIN; |
195 |
|
196 |
if (SvTRUE (ERRSV)) |
197 |
{ |
198 |
free_req (req); |
199 |
croak (0); |
200 |
} |
201 |
} |
202 |
|
203 |
LEAVE; |
204 |
|
205 |
errno = errorno; |
206 |
count++; |
207 |
} |
208 |
|
209 |
free_req (req); |
210 |
} |
211 |
|
212 |
return count; |
213 |
} |
214 |
|
215 |
static void *aio_proc(void *arg); |
216 |
|
217 |
static void |
218 |
start_thread (void) |
219 |
{ |
220 |
sigset_t fullsigset, oldsigset; |
221 |
pthread_t tid; |
222 |
pthread_attr_t attr; |
223 |
|
224 |
pthread_attr_init (&attr); |
225 |
pthread_attr_setstacksize (&attr, STACKSIZE); |
226 |
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
227 |
|
228 |
sigfillset (&fullsigset); |
229 |
sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
230 |
|
231 |
if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
232 |
started++; |
233 |
|
234 |
sigprocmask (SIG_SETMASK, &oldsigset, 0); |
235 |
} |
236 |
|
237 |
static void |
238 |
send_req (aio_req req) |
239 |
{ |
240 |
while (started < wanted && nreqs >= started) |
241 |
start_thread (); |
242 |
|
243 |
nreqs++; |
244 |
|
245 |
pthread_mutex_lock (&reqlock); |
246 |
|
247 |
req->next = 0; |
248 |
|
249 |
if (reqe) |
250 |
{ |
251 |
reqe->next = req; |
252 |
reqe = req; |
253 |
} |
254 |
else |
255 |
reqe = reqs = req; |
256 |
|
257 |
pthread_cond_signal (&reqwait); |
258 |
pthread_mutex_unlock (&reqlock); |
259 |
|
260 |
if (nreqs > max_outstanding) |
261 |
for (;;) |
262 |
{ |
263 |
poll_cb (); |
264 |
|
265 |
if (nreqs <= max_outstanding) |
266 |
break; |
267 |
|
268 |
poll_wait (); |
269 |
} |
270 |
} |
271 |
|
272 |
static void |
273 |
end_thread (void) |
274 |
{ |
275 |
aio_req req; |
276 |
Newz (0, req, 1, aio_cb); |
277 |
req->type = REQ_QUIT; |
278 |
|
279 |
send_req (req); |
280 |
} |
281 |
|
282 |
static void min_parallel (int nthreads) |
283 |
{ |
284 |
if (wanted < nthreads) |
285 |
wanted = nthreads; |
286 |
} |
287 |
|
288 |
static void max_parallel (int nthreads) |
289 |
{ |
290 |
int cur = started; |
291 |
|
292 |
if (wanted > nthreads) |
293 |
wanted = nthreads; |
294 |
|
295 |
while (cur > wanted) |
296 |
{ |
297 |
end_thread (); |
298 |
cur--; |
299 |
} |
300 |
|
301 |
while (started > wanted) |
302 |
{ |
303 |
poll_wait (); |
304 |
poll_cb (); |
305 |
} |
306 |
} |
307 |
|
308 |
static void create_pipe () |
309 |
{ |
310 |
if (pipe (respipe)) |
311 |
croak ("unable to initialize result pipe"); |
312 |
|
313 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
314 |
croak ("cannot set result pipe to nonblocking mode"); |
315 |
|
316 |
if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
317 |
croak ("cannot set result pipe to nonblocking mode"); |
318 |
} |
319 |
|
320 |
static void atfork_prepare (void) |
321 |
{ |
322 |
pthread_mutex_lock (&reqlock); |
323 |
pthread_mutex_lock (&reslock); |
324 |
} |
325 |
|
326 |
static void atfork_parent (void) |
327 |
{ |
328 |
pthread_mutex_unlock (&reslock); |
329 |
pthread_mutex_unlock (&reqlock); |
330 |
} |
331 |
|
332 |
static void atfork_child (void) |
333 |
{ |
334 |
aio_req prv; |
335 |
|
336 |
started = 0; |
337 |
|
338 |
while (reqs) |
339 |
{ |
340 |
prv = reqs; |
341 |
reqs = prv->next; |
342 |
free_req (prv); |
343 |
} |
344 |
|
345 |
reqs = reqe = 0; |
346 |
|
347 |
while (ress) |
348 |
{ |
349 |
prv = ress; |
350 |
ress = prv->next; |
351 |
free_req (prv); |
352 |
} |
353 |
|
354 |
ress = rese = 0; |
355 |
|
356 |
close (respipe [0]); |
357 |
close (respipe [1]); |
358 |
create_pipe (); |
359 |
|
360 |
atfork_parent (); |
361 |
} |
362 |
|
363 |
/*****************************************************************************/ |
364 |
/* work around various missing functions */ |
365 |
|
366 |
#if !HAVE_PREADWRITE |
367 |
# define pread aio_pread |
368 |
# define pwrite aio_pwrite |
369 |
|
370 |
/* |
371 |
* make our pread/pwrite safe against themselves, but not against |
372 |
* normal read/write by using a mutex. slows down execution a lot, |
373 |
* but that's your problem, not mine. |
374 |
*/ |
375 |
static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
376 |
|
377 |
static ssize_t |
378 |
pread (int fd, void *buf, size_t count, off_t offset) |
379 |
{ |
380 |
ssize_t res; |
381 |
off_t ooffset; |
382 |
|
383 |
pthread_mutex_lock (&iolock); |
384 |
ooffset = lseek (fd, 0, SEEK_CUR); |
385 |
lseek (fd, offset, SEEK_SET); |
386 |
res = read (fd, buf, count); |
387 |
lseek (fd, ooffset, SEEK_SET); |
388 |
pthread_mutex_unlock (&iolock); |
389 |
|
390 |
return res; |
391 |
} |
392 |
|
393 |
static ssize_t |
394 |
pwrite (int fd, void *buf, size_t count, off_t offset) |
395 |
{ |
396 |
ssize_t res; |
397 |
off_t ooffset; |
398 |
|
399 |
pthread_mutex_lock (&iolock); |
400 |
ooffset = lseek (fd, 0, SEEK_CUR); |
401 |
lseek (fd, offset, SEEK_SET); |
402 |
res = write (fd, buf, count); |
403 |
lseek (fd, offset, SEEK_SET); |
404 |
pthread_mutex_unlock (&iolock); |
405 |
|
406 |
return res; |
407 |
} |
408 |
#endif |
409 |
|
410 |
#if !HAVE_FDATASYNC |
411 |
# define fdatasync fsync |
412 |
#endif |
413 |
|
414 |
#if !HAVE_READAHEAD |
415 |
# define readahead aio_readahead |
416 |
|
417 |
static char readahead_buf[4096]; |
418 |
|
419 |
static ssize_t |
420 |
readahead (int fd, off_t offset, size_t count) |
421 |
{ |
422 |
while (count > 0) |
423 |
{ |
424 |
size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
425 |
|
426 |
pread (fd, readahead_buf, len, offset); |
427 |
offset += len; |
428 |
count -= len; |
429 |
} |
430 |
|
431 |
errno = 0; |
432 |
} |
433 |
#endif |
434 |
|
435 |
/* sendfile always needs emulation */ |
436 |
static ssize_t |
437 |
sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
438 |
{ |
439 |
ssize_t res; |
440 |
|
441 |
if (!count) |
442 |
return 0; |
443 |
|
444 |
#if __linux |
445 |
res = sendfile (ofd, ifd, &offset, count); |
446 |
|
447 |
#elif __freebsd |
448 |
/* |
449 |
* Of course, the freebsd sendfile is a dire hack with no thoughts |
450 |
* wasted on making it similar to other i/o functions. |
451 |
*/ |
452 |
{ |
453 |
off_t sbytes; |
454 |
res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
455 |
|
456 |
if (!res && errno == EAGAIN) |
457 |
/* maybe on others, too, as usual, the manpage leaves you guessing */ |
458 |
res = sbytes; |
459 |
} |
460 |
|
461 |
#elif __hpux |
462 |
res = sendfile (ofd, ifd, offset, count, 0, 0); |
463 |
|
464 |
#else |
465 |
res = -1; |
466 |
errno = ENOSYS; |
467 |
#endif |
468 |
|
469 |
if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK)) |
470 |
{ |
471 |
/* emulate sendfile. this is a major pain in the ass */ |
472 |
char *buf = malloc (4096); |
473 |
res = 0; |
474 |
|
475 |
for (;;) |
476 |
{ |
477 |
ssize_t cnt; |
478 |
|
479 |
cnt = pread (ifd, buf, 4096, offset); |
480 |
|
481 |
if (cnt <= 0) |
482 |
{ |
483 |
if (cnt && !res) res = -1; |
484 |
break; |
485 |
} |
486 |
|
487 |
cnt = write (ofd, buf, cnt); |
488 |
|
489 |
if (cnt <= 0) |
490 |
{ |
491 |
if (cnt && !res) res = -1; |
492 |
break; |
493 |
} |
494 |
|
495 |
offset += cnt; |
496 |
res += cnt; |
497 |
} |
498 |
|
499 |
{ |
500 |
int errorno = errno; |
501 |
free (buf); |
502 |
errno = errorno; |
503 |
} |
504 |
} |
505 |
|
506 |
return res; |
507 |
} |
508 |
|
509 |
/*****************************************************************************/ |
510 |
|
511 |
static void * |
512 |
aio_proc (void *thr_arg) |
513 |
{ |
514 |
aio_req req; |
515 |
int type; |
516 |
|
517 |
do |
518 |
{ |
519 |
pthread_mutex_lock (&reqlock); |
520 |
|
521 |
for (;;) |
522 |
{ |
523 |
req = reqs; |
524 |
|
525 |
if (reqs) |
526 |
{ |
527 |
reqs = reqs->next; |
528 |
if (!reqs) reqe = 0; |
529 |
} |
530 |
|
531 |
if (req) |
532 |
break; |
533 |
|
534 |
pthread_cond_wait (&reqwait, &reqlock); |
535 |
} |
536 |
|
537 |
pthread_mutex_unlock (&reqlock); |
538 |
|
539 |
errno = 0; /* strictly unnecessary */ |
540 |
|
541 |
type = req->type; |
542 |
|
543 |
switch (type) |
544 |
{ |
545 |
case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
546 |
case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
547 |
|
548 |
case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
549 |
case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
550 |
|
551 |
case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
552 |
case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
553 |
case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
554 |
|
555 |
case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
556 |
case REQ_CLOSE: req->result = close (req->fd); break; |
557 |
case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
558 |
case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
559 |
case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
560 |
|
561 |
case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
562 |
case REQ_FSYNC: req->result = fsync (req->fd); break; |
563 |
|
564 |
case REQ_QUIT: |
565 |
break; |
566 |
|
567 |
default: |
568 |
req->result = ENOSYS; |
569 |
break; |
570 |
} |
571 |
|
572 |
req->errorno = errno; |
573 |
|
574 |
pthread_mutex_lock (&reslock); |
575 |
|
576 |
req->next = 0; |
577 |
|
578 |
if (rese) |
579 |
{ |
580 |
rese->next = req; |
581 |
rese = req; |
582 |
} |
583 |
else |
584 |
{ |
585 |
rese = ress = req; |
586 |
|
587 |
/* write a dummy byte to the pipe so fh becomes ready */ |
588 |
write (respipe [1], &respipe, 1); |
589 |
} |
590 |
|
591 |
pthread_mutex_unlock (&reslock); |
592 |
} |
593 |
while (type != REQ_QUIT); |
594 |
|
595 |
return 0; |
596 |
} |
597 |
|
598 |
#define dREQ \ |
599 |
aio_req req; \ |
600 |
\ |
601 |
if (SvOK (callback) && !SvROK (callback)) \ |
602 |
croak ("clalback must be undef or of reference type"); \ |
603 |
\ |
604 |
Newz (0, req, 1, aio_cb); \ |
605 |
if (!req) \ |
606 |
croak ("out of memory during aio_req allocation"); \ |
607 |
\ |
608 |
req->callback = newSVsv (callback); |
609 |
|
610 |
MODULE = IO::AIO PACKAGE = IO::AIO |
611 |
|
612 |
PROTOTYPES: ENABLE |
613 |
|
614 |
BOOT: |
615 |
{ |
616 |
create_pipe (); |
617 |
pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
618 |
} |
619 |
|
620 |
void |
621 |
min_parallel(nthreads) |
622 |
int nthreads |
623 |
PROTOTYPE: $ |
624 |
|
625 |
void |
626 |
max_parallel(nthreads) |
627 |
int nthreads |
628 |
PROTOTYPE: $ |
629 |
|
630 |
int |
631 |
max_outstanding(nreqs) |
632 |
int nreqs |
633 |
PROTOTYPE: $ |
634 |
CODE: |
635 |
RETVAL = max_outstanding; |
636 |
max_outstanding = nreqs; |
637 |
|
638 |
void |
639 |
aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
640 |
SV * pathname |
641 |
int flags |
642 |
int mode |
643 |
SV * callback |
644 |
PROTOTYPE: $$$;$ |
645 |
CODE: |
646 |
{ |
647 |
dREQ; |
648 |
|
649 |
req->type = REQ_OPEN; |
650 |
req->data = newSVsv (pathname); |
651 |
req->dataptr = SvPVbyte_nolen (req->data); |
652 |
req->fd = flags; |
653 |
req->mode = mode; |
654 |
|
655 |
send_req (req); |
656 |
} |
657 |
|
658 |
void |
659 |
aio_close(fh,callback=&PL_sv_undef) |
660 |
SV * fh |
661 |
SV * callback |
662 |
PROTOTYPE: $;$ |
663 |
ALIAS: |
664 |
aio_close = REQ_CLOSE |
665 |
aio_fsync = REQ_FSYNC |
666 |
aio_fdatasync = REQ_FDATASYNC |
667 |
CODE: |
668 |
{ |
669 |
dREQ; |
670 |
|
671 |
req->type = ix; |
672 |
req->fh = newSVsv (fh); |
673 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
674 |
|
675 |
send_req (req); |
676 |
} |
677 |
|
678 |
void |
679 |
aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
680 |
SV * fh |
681 |
UV offset |
682 |
UV length |
683 |
SV * data |
684 |
UV dataoffset |
685 |
SV * callback |
686 |
ALIAS: |
687 |
aio_read = REQ_READ |
688 |
aio_write = REQ_WRITE |
689 |
PROTOTYPE: $$$$$;$ |
690 |
CODE: |
691 |
{ |
692 |
aio_req req; |
693 |
STRLEN svlen; |
694 |
char *svptr = SvPVbyte (data, svlen); |
695 |
|
696 |
SvUPGRADE (data, SVt_PV); |
697 |
SvPOK_on (data); |
698 |
|
699 |
if (dataoffset < 0) |
700 |
dataoffset += svlen; |
701 |
|
702 |
if (dataoffset < 0 || dataoffset > svlen) |
703 |
croak ("data offset outside of string"); |
704 |
|
705 |
if (ix == REQ_WRITE) |
706 |
{ |
707 |
/* write: check length and adjust. */ |
708 |
if (length < 0 || length + dataoffset > svlen) |
709 |
length = svlen - dataoffset; |
710 |
} |
711 |
else |
712 |
{ |
713 |
/* read: grow scalar as necessary */ |
714 |
svptr = SvGROW (data, length + dataoffset); |
715 |
} |
716 |
|
717 |
if (length < 0) |
718 |
croak ("length must not be negative"); |
719 |
|
720 |
{ |
721 |
dREQ; |
722 |
|
723 |
req->type = ix; |
724 |
req->fh = newSVsv (fh); |
725 |
req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
726 |
: IoOFP (sv_2io (fh))); |
727 |
req->offset = offset; |
728 |
req->length = length; |
729 |
req->data = SvREFCNT_inc (data); |
730 |
req->dataptr = (char *)svptr + dataoffset; |
731 |
|
732 |
if (!SvREADONLY (data)) |
733 |
{ |
734 |
SvREADONLY_on (data); |
735 |
req->data2ptr = (void *)data; |
736 |
} |
737 |
|
738 |
send_req (req); |
739 |
} |
740 |
} |
741 |
|
742 |
void |
743 |
aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
744 |
SV * out_fh |
745 |
SV * in_fh |
746 |
UV in_offset |
747 |
UV length |
748 |
SV * callback |
749 |
PROTOTYPE: $$$$;$ |
750 |
CODE: |
751 |
{ |
752 |
dREQ; |
753 |
|
754 |
req->type = REQ_SENDFILE; |
755 |
req->fh = newSVsv (out_fh); |
756 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
757 |
req->fh2 = newSVsv (in_fh); |
758 |
req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
759 |
req->offset = in_offset; |
760 |
req->length = length; |
761 |
|
762 |
send_req (req); |
763 |
} |
764 |
|
765 |
void |
766 |
aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
767 |
SV * fh |
768 |
UV offset |
769 |
IV length |
770 |
SV * callback |
771 |
PROTOTYPE: $$$;$ |
772 |
CODE: |
773 |
{ |
774 |
dREQ; |
775 |
|
776 |
req->type = REQ_READAHEAD; |
777 |
req->fh = newSVsv (fh); |
778 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
779 |
req->offset = offset; |
780 |
req->length = length; |
781 |
|
782 |
send_req (req); |
783 |
} |
784 |
|
785 |
void |
786 |
aio_stat(fh_or_path,callback=&PL_sv_undef) |
787 |
SV * fh_or_path |
788 |
SV * callback |
789 |
ALIAS: |
790 |
aio_stat = REQ_STAT |
791 |
aio_lstat = REQ_LSTAT |
792 |
CODE: |
793 |
{ |
794 |
dREQ; |
795 |
|
796 |
New (0, req->statdata, 1, Stat_t); |
797 |
if (!req->statdata) |
798 |
{ |
799 |
free_req (req); |
800 |
croak ("out of memory during aio_req->statdata allocation"); |
801 |
} |
802 |
|
803 |
if (SvPOK (fh_or_path)) |
804 |
{ |
805 |
req->type = ix; |
806 |
req->data = newSVsv (fh_or_path); |
807 |
req->dataptr = SvPVbyte_nolen (req->data); |
808 |
} |
809 |
else |
810 |
{ |
811 |
req->type = REQ_FSTAT; |
812 |
req->fh = newSVsv (fh_or_path); |
813 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
814 |
} |
815 |
|
816 |
send_req (req); |
817 |
} |
818 |
|
819 |
void |
820 |
aio_unlink(pathname,callback=&PL_sv_undef) |
821 |
SV * pathname |
822 |
SV * callback |
823 |
ALIAS: |
824 |
aio_unlink = REQ_UNLINK |
825 |
aio_rmdir = REQ_RMDIR |
826 |
CODE: |
827 |
{ |
828 |
dREQ; |
829 |
|
830 |
req->type = ix; |
831 |
req->data = newSVsv (pathname); |
832 |
req->dataptr = SvPVbyte_nolen (req->data); |
833 |
|
834 |
send_req (req); |
835 |
} |
836 |
|
837 |
void |
838 |
aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
839 |
SV * oldpath |
840 |
SV * newpath |
841 |
SV * callback |
842 |
CODE: |
843 |
{ |
844 |
dREQ; |
845 |
|
846 |
req->type = REQ_SYMLINK; |
847 |
req->fh = newSVsv (oldpath); |
848 |
req->data2ptr = SvPVbyte_nolen (req->fh); |
849 |
req->data = newSVsv (newpath); |
850 |
req->dataptr = SvPVbyte_nolen (req->data); |
851 |
|
852 |
send_req (req); |
853 |
} |
854 |
|
855 |
void |
856 |
flush() |
857 |
PROTOTYPE: |
858 |
CODE: |
859 |
while (nreqs) |
860 |
{ |
861 |
poll_wait (); |
862 |
poll_cb (); |
863 |
} |
864 |
|
865 |
void |
866 |
poll() |
867 |
PROTOTYPE: |
868 |
CODE: |
869 |
if (nreqs) |
870 |
{ |
871 |
poll_wait (); |
872 |
poll_cb (); |
873 |
} |
874 |
|
875 |
int |
876 |
poll_fileno() |
877 |
PROTOTYPE: |
878 |
CODE: |
879 |
RETVAL = respipe [0]; |
880 |
OUTPUT: |
881 |
RETVAL |
882 |
|
883 |
int |
884 |
poll_cb(...) |
885 |
PROTOTYPE: |
886 |
CODE: |
887 |
RETVAL = poll_cb (); |
888 |
OUTPUT: |
889 |
RETVAL |
890 |
|
891 |
void |
892 |
poll_wait() |
893 |
PROTOTYPE: |
894 |
CODE: |
895 |
if (nreqs) |
896 |
poll_wait (); |
897 |
|
898 |
int |
899 |
nreqs() |
900 |
PROTOTYPE: |
901 |
CODE: |
902 |
RETVAL = nreqs; |
903 |
OUTPUT: |
904 |
RETVAL |
905 |
|