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