1 |
#include "xthread.h" |
2 |
|
3 |
#include <errno.h> |
4 |
|
5 |
#include "EXTERN.h" |
6 |
#include "perl.h" |
7 |
#include "XSUB.h" |
8 |
|
9 |
#include <stddef.h> |
10 |
#include <stdlib.h> |
11 |
#include <errno.h> |
12 |
#include <sys/types.h> |
13 |
#include <sys/stat.h> |
14 |
#include <limits.h> |
15 |
#include <fcntl.h> |
16 |
#include <sched.h> |
17 |
|
18 |
#ifdef _WIN32 |
19 |
|
20 |
# define SIGIO 0 |
21 |
typedef Direntry_t X_DIRENT; |
22 |
#undef malloc |
23 |
#undef free |
24 |
|
25 |
// perl overrides all those nice win32 functions |
26 |
# undef open |
27 |
# undef read |
28 |
# undef write |
29 |
# undef send |
30 |
# undef recv |
31 |
# undef stat |
32 |
# undef fstat |
33 |
# define lstat stat |
34 |
# undef truncate |
35 |
# undef ftruncate |
36 |
# undef open |
37 |
# undef close |
38 |
# undef unlink |
39 |
# undef rmdir |
40 |
# undef rename |
41 |
# undef lseek |
42 |
|
43 |
# define chown(a,b,c) (errno = ENOSYS, -1) |
44 |
# define fchown(a,b,c) (errno = ENOSYS, -1) |
45 |
# define fchmod(a,b) (errno = ENOSYS, -1) |
46 |
# define symlink(a,b) (errno = ENOSYS, -1) |
47 |
# define readlink(a,b,c) (errno = ENOSYS, -1) |
48 |
# define mknod(a,b,c) (errno = ENOSYS, -1) |
49 |
# define truncate(a,b) (errno = ENOSYS, -1) |
50 |
# define ftruncate(fd,o) chsize ((fd), (o)) |
51 |
# define fsync(fd) _commit (fd) |
52 |
# define opendir(fd) (errno = ENOSYS, 0) |
53 |
# define readdir(fd) (errno = ENOSYS, -1) |
54 |
# define closedir(fd) (errno = ENOSYS, -1) |
55 |
# define mkdir(a,b) mkdir (a) |
56 |
|
57 |
#else |
58 |
|
59 |
# include "autoconf/config.h" |
60 |
# include <sys/time.h> |
61 |
# include <sys/select.h> |
62 |
# include <unistd.h> |
63 |
# include <utime.h> |
64 |
# include <signal.h> |
65 |
typedef struct dirent X_DIRENT; |
66 |
|
67 |
#endif |
68 |
|
69 |
#if HAVE_SENDFILE |
70 |
# if __linux |
71 |
# include <sys/sendfile.h> |
72 |
# elif __freebsd |
73 |
# include <sys/socket.h> |
74 |
# include <sys/uio.h> |
75 |
# elif __hpux |
76 |
# include <sys/socket.h> |
77 |
# elif __solaris /* not yet */ |
78 |
# include <sys/sendfile.h> |
79 |
# else |
80 |
# error sendfile support requested but not available |
81 |
# endif |
82 |
#endif |
83 |
|
84 |
/* number of seconds after which idle threads exit */ |
85 |
#define IDLE_TIMEOUT 10 |
86 |
|
87 |
/* used for struct dirent, AIX doesn't provide it */ |
88 |
#ifndef NAME_MAX |
89 |
# define NAME_MAX 4096 |
90 |
#endif |
91 |
|
92 |
/* buffer size for various temporary buffers */ |
93 |
#define AIO_BUFSIZE 65536 |
94 |
|
95 |
/* use NV for 32 bit perls as it allows larger offsets */ |
96 |
#if IVSIZE >= 8 |
97 |
# define SvVAL64 SvIV |
98 |
#else |
99 |
# define SvVAL64 SvNV |
100 |
#endif |
101 |
|
102 |
static HV *stash; |
103 |
|
104 |
#define dBUF \ |
105 |
char *aio_buf; \ |
106 |
X_LOCK (wrklock); \ |
107 |
self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
108 |
X_UNLOCK (wrklock); \ |
109 |
if (!aio_buf) \ |
110 |
return -1; |
111 |
|
112 |
typedef SV SV8; /* byte-sv, used for argument-checking */ |
113 |
|
114 |
enum { |
115 |
REQ_QUIT, |
116 |
REQ_OPEN, REQ_CLOSE, |
117 |
REQ_READ, REQ_WRITE, |
118 |
REQ_READAHEAD, REQ_SENDFILE, |
119 |
REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
120 |
REQ_TRUNCATE, REQ_FTRUNCATE, |
121 |
REQ_UTIME, REQ_FUTIME, |
122 |
REQ_CHMOD, REQ_FCHMOD, |
123 |
REQ_CHOWN, REQ_FCHOWN, |
124 |
REQ_FSYNC, REQ_FDATASYNC, |
125 |
REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME, |
126 |
REQ_MKNOD, REQ_READDIR, |
127 |
REQ_LINK, REQ_SYMLINK, REQ_READLINK, |
128 |
REQ_GROUP, REQ_NOP, |
129 |
REQ_BUSY, |
130 |
}; |
131 |
|
132 |
#define AIO_REQ_KLASS "IO::AIO::REQ" |
133 |
#define AIO_GRP_KLASS "IO::AIO::GRP" |
134 |
|
135 |
typedef struct aio_cb |
136 |
{ |
137 |
struct aio_cb *volatile next; |
138 |
|
139 |
SV *callback; |
140 |
SV *sv1, *sv2; |
141 |
void *ptr1, *ptr2; |
142 |
off_t offs; |
143 |
size_t size; |
144 |
ssize_t result; |
145 |
double nv1, nv2; |
146 |
|
147 |
STRLEN stroffset; |
148 |
int type; |
149 |
int int1, int2, int3; |
150 |
int errorno; |
151 |
mode_t mode; /* open */ |
152 |
|
153 |
unsigned char flags; |
154 |
unsigned char pri; |
155 |
|
156 |
SV *self; /* the perl counterpart of this request, if any */ |
157 |
struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
158 |
} aio_cb; |
159 |
|
160 |
enum { |
161 |
FLAG_CANCELLED = 0x01, /* request was cancelled */ |
162 |
FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */ |
163 |
FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */ |
164 |
}; |
165 |
|
166 |
typedef aio_cb *aio_req; |
167 |
typedef aio_cb *aio_req_ornot; |
168 |
|
169 |
enum { |
170 |
PRI_MIN = -4, |
171 |
PRI_MAX = 4, |
172 |
|
173 |
DEFAULT_PRI = 0, |
174 |
PRI_BIAS = -PRI_MIN, |
175 |
NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
176 |
}; |
177 |
|
178 |
#define AIO_TICKS ((1000000 + 1023) >> 10) |
179 |
|
180 |
static unsigned int max_poll_time = 0; |
181 |
static unsigned int max_poll_reqs = 0; |
182 |
|
183 |
/* calculcate time difference in ~1/AIO_TICKS of a second */ |
184 |
static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
185 |
{ |
186 |
return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS |
187 |
+ ((tv2->tv_usec - tv1->tv_usec) >> 10); |
188 |
} |
189 |
|
190 |
static thread_t main_tid; |
191 |
static int main_sig; |
192 |
static int block_sig_level; |
193 |
|
194 |
void block_sig () |
195 |
{ |
196 |
sigset_t ss; |
197 |
|
198 |
if (block_sig_level++) |
199 |
return; |
200 |
|
201 |
if (!main_sig) |
202 |
return; |
203 |
|
204 |
sigemptyset (&ss); |
205 |
sigaddset (&ss, main_sig); |
206 |
pthread_sigmask (SIG_BLOCK, &ss, 0); |
207 |
} |
208 |
|
209 |
void unblock_sig () |
210 |
{ |
211 |
sigset_t ss; |
212 |
|
213 |
if (--block_sig_level) |
214 |
return; |
215 |
|
216 |
if (!main_sig) |
217 |
return; |
218 |
|
219 |
sigemptyset (&ss); |
220 |
sigaddset (&ss, main_sig); |
221 |
pthread_sigmask (SIG_UNBLOCK, &ss, 0); |
222 |
} |
223 |
|
224 |
static int next_pri = DEFAULT_PRI + PRI_BIAS; |
225 |
|
226 |
static unsigned int started, idle, wanted; |
227 |
|
228 |
/* worker threads management */ |
229 |
static mutex_t wrklock = X_MUTEX_INIT; |
230 |
|
231 |
typedef struct worker { |
232 |
/* locked by wrklock */ |
233 |
struct worker *prev, *next; |
234 |
|
235 |
thread_t tid; |
236 |
|
237 |
/* locked by reslock, reqlock or wrklock */ |
238 |
aio_req req; /* currently processed request */ |
239 |
void *dbuf; |
240 |
DIR *dirp; |
241 |
} worker; |
242 |
|
243 |
static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
244 |
|
245 |
static void worker_clear (worker *wrk) |
246 |
{ |
247 |
if (wrk->dirp) |
248 |
{ |
249 |
closedir (wrk->dirp); |
250 |
wrk->dirp = 0; |
251 |
} |
252 |
|
253 |
if (wrk->dbuf) |
254 |
{ |
255 |
free (wrk->dbuf); |
256 |
wrk->dbuf = 0; |
257 |
} |
258 |
} |
259 |
|
260 |
static void worker_free (worker *wrk) |
261 |
{ |
262 |
wrk->next->prev = wrk->prev; |
263 |
wrk->prev->next = wrk->next; |
264 |
|
265 |
free (wrk); |
266 |
} |
267 |
|
268 |
static volatile unsigned int nreqs, nready, npending; |
269 |
static volatile unsigned int max_idle = 4; |
270 |
static volatile unsigned int max_outstanding = 0xffffffff; |
271 |
static int respipe_osf [2], respipe [2] = { -1, -1 }; |
272 |
|
273 |
static mutex_t reslock = X_MUTEX_INIT; |
274 |
static mutex_t reqlock = X_MUTEX_INIT; |
275 |
static cond_t reqwait = X_COND_INIT; |
276 |
|
277 |
#if WORDACCESS_UNSAFE |
278 |
|
279 |
static unsigned int get_nready () |
280 |
{ |
281 |
unsigned int retval; |
282 |
|
283 |
X_LOCK (reqlock); |
284 |
retval = nready; |
285 |
X_UNLOCK (reqlock); |
286 |
|
287 |
return retval; |
288 |
} |
289 |
|
290 |
static unsigned int get_npending () |
291 |
{ |
292 |
unsigned int retval; |
293 |
|
294 |
X_LOCK (reslock); |
295 |
retval = npending; |
296 |
X_UNLOCK (reslock); |
297 |
|
298 |
return retval; |
299 |
} |
300 |
|
301 |
static unsigned int get_nthreads () |
302 |
{ |
303 |
unsigned int retval; |
304 |
|
305 |
X_LOCK (wrklock); |
306 |
retval = started; |
307 |
X_UNLOCK (wrklock); |
308 |
|
309 |
return retval; |
310 |
} |
311 |
|
312 |
#else |
313 |
|
314 |
# define get_nready() nready |
315 |
# define get_npending() npending |
316 |
# define get_nthreads() started |
317 |
|
318 |
#endif |
319 |
|
320 |
/* |
321 |
* a somewhat faster data structure might be nice, but |
322 |
* with 8 priorities this actually needs <20 insns |
323 |
* per shift, the most expensive operation. |
324 |
*/ |
325 |
typedef struct { |
326 |
aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
327 |
int size; |
328 |
} reqq; |
329 |
|
330 |
static reqq req_queue; |
331 |
static reqq res_queue; |
332 |
|
333 |
int reqq_push (reqq *q, aio_req req) |
334 |
{ |
335 |
int pri = req->pri; |
336 |
req->next = 0; |
337 |
|
338 |
if (q->qe[pri]) |
339 |
{ |
340 |
q->qe[pri]->next = req; |
341 |
q->qe[pri] = req; |
342 |
} |
343 |
else |
344 |
q->qe[pri] = q->qs[pri] = req; |
345 |
|
346 |
return q->size++; |
347 |
} |
348 |
|
349 |
aio_req reqq_shift (reqq *q) |
350 |
{ |
351 |
int pri; |
352 |
|
353 |
if (!q->size) |
354 |
return 0; |
355 |
|
356 |
--q->size; |
357 |
|
358 |
for (pri = NUM_PRI; pri--; ) |
359 |
{ |
360 |
aio_req req = q->qs[pri]; |
361 |
|
362 |
if (req) |
363 |
{ |
364 |
if (!(q->qs[pri] = req->next)) |
365 |
q->qe[pri] = 0; |
366 |
|
367 |
return req; |
368 |
} |
369 |
} |
370 |
|
371 |
abort (); |
372 |
} |
373 |
|
374 |
static int poll_cb (); |
375 |
static int req_invoke (aio_req req); |
376 |
static void req_destroy (aio_req req); |
377 |
static void req_cancel (aio_req req); |
378 |
|
379 |
/* must be called at most once */ |
380 |
static SV *req_sv (aio_req req, const char *klass) |
381 |
{ |
382 |
if (!req->self) |
383 |
{ |
384 |
req->self = (SV *)newHV (); |
385 |
sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
386 |
} |
387 |
|
388 |
return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
389 |
} |
390 |
|
391 |
static aio_req SvAIO_REQ (SV *sv) |
392 |
{ |
393 |
MAGIC *mg; |
394 |
|
395 |
if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
396 |
croak ("object of class " AIO_REQ_KLASS " expected"); |
397 |
|
398 |
mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
399 |
|
400 |
return mg ? (aio_req)mg->mg_ptr : 0; |
401 |
} |
402 |
|
403 |
static void aio_grp_feed (aio_req grp) |
404 |
{ |
405 |
block_sig (); |
406 |
|
407 |
while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) |
408 |
{ |
409 |
int old_len = grp->size; |
410 |
|
411 |
if (grp->sv2 && SvOK (grp->sv2)) |
412 |
{ |
413 |
dSP; |
414 |
|
415 |
ENTER; |
416 |
SAVETMPS; |
417 |
PUSHMARK (SP); |
418 |
XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
419 |
PUTBACK; |
420 |
call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); |
421 |
SPAGAIN; |
422 |
FREETMPS; |
423 |
LEAVE; |
424 |
} |
425 |
|
426 |
/* stop if no progress has been made */ |
427 |
if (old_len == grp->size) |
428 |
{ |
429 |
SvREFCNT_dec (grp->sv2); |
430 |
grp->sv2 = 0; |
431 |
break; |
432 |
} |
433 |
} |
434 |
|
435 |
unblock_sig (); |
436 |
} |
437 |
|
438 |
static void aio_grp_dec (aio_req grp) |
439 |
{ |
440 |
--grp->size; |
441 |
|
442 |
/* call feeder, if applicable */ |
443 |
aio_grp_feed (grp); |
444 |
|
445 |
/* finish, if done */ |
446 |
if (!grp->size && grp->int1) |
447 |
{ |
448 |
block_sig (); |
449 |
|
450 |
if (!req_invoke (grp)) |
451 |
{ |
452 |
req_destroy (grp); |
453 |
unblock_sig (); |
454 |
croak (0); |
455 |
} |
456 |
|
457 |
req_destroy (grp); |
458 |
unblock_sig (); |
459 |
} |
460 |
} |
461 |
|
462 |
static int req_invoke (aio_req req) |
463 |
{ |
464 |
dSP; |
465 |
|
466 |
if (req->flags & FLAG_SV2_RO_OFF) |
467 |
SvREADONLY_off (req->sv2); |
468 |
|
469 |
if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
470 |
{ |
471 |
ENTER; |
472 |
SAVETMPS; |
473 |
PUSHMARK (SP); |
474 |
EXTEND (SP, 1); |
475 |
|
476 |
switch (req->type) |
477 |
{ |
478 |
case REQ_READDIR: |
479 |
{ |
480 |
SV *rv = &PL_sv_undef; |
481 |
|
482 |
if (req->result >= 0) |
483 |
{ |
484 |
int i; |
485 |
char *buf = req->ptr2; |
486 |
AV *av = newAV (); |
487 |
|
488 |
av_extend (av, req->result - 1); |
489 |
|
490 |
for (i = 0; i < req->result; ++i) |
491 |
{ |
492 |
SV *sv = newSVpv (buf, 0); |
493 |
|
494 |
av_store (av, i, sv); |
495 |
buf += SvCUR (sv) + 1; |
496 |
} |
497 |
|
498 |
rv = sv_2mortal (newRV_noinc ((SV *)av)); |
499 |
} |
500 |
|
501 |
PUSHs (rv); |
502 |
} |
503 |
break; |
504 |
|
505 |
case REQ_OPEN: |
506 |
{ |
507 |
/* convert fd to fh */ |
508 |
SV *fh = &PL_sv_undef; |
509 |
|
510 |
if (req->result >= 0) |
511 |
{ |
512 |
GV *gv = (GV *)sv_newmortal (); |
513 |
int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR); |
514 |
char sym [64]; |
515 |
int symlen; |
516 |
|
517 |
symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result); |
518 |
gv_init (gv, stash, sym, symlen, 0); |
519 |
|
520 |
symlen = snprintf ( |
521 |
sym, |
522 |
sizeof (sym), |
523 |
"%s&=%d", |
524 |
flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<", |
525 |
req->result |
526 |
); |
527 |
|
528 |
if (do_open (gv, sym, symlen, 0, 0, 0, 0)) |
529 |
fh = (SV *)gv; |
530 |
} |
531 |
|
532 |
PUSHs (fh); |
533 |
} |
534 |
break; |
535 |
|
536 |
case REQ_GROUP: |
537 |
req->int1 = 2; /* mark group as finished */ |
538 |
|
539 |
if (req->sv1) |
540 |
{ |
541 |
int i; |
542 |
AV *av = (AV *)req->sv1; |
543 |
|
544 |
EXTEND (SP, AvFILL (av) + 1); |
545 |
for (i = 0; i <= AvFILL (av); ++i) |
546 |
PUSHs (*av_fetch (av, i, 0)); |
547 |
} |
548 |
break; |
549 |
|
550 |
case REQ_NOP: |
551 |
case REQ_BUSY: |
552 |
break; |
553 |
|
554 |
case REQ_READLINK: |
555 |
if (req->result > 0) |
556 |
{ |
557 |
SvCUR_set (req->sv2, req->result); |
558 |
*SvEND (req->sv2) = 0; |
559 |
PUSHs (req->sv2); |
560 |
} |
561 |
break; |
562 |
|
563 |
case REQ_STAT: |
564 |
case REQ_LSTAT: |
565 |
case REQ_FSTAT: |
566 |
PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
567 |
PL_laststatval = req->result; |
568 |
PL_statcache = *(Stat_t *)(req->ptr2); |
569 |
PUSHs (sv_2mortal (newSViv (req->result))); |
570 |
break; |
571 |
|
572 |
case REQ_READ: |
573 |
SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0)); |
574 |
*SvEND (req->sv2) = 0; |
575 |
PUSHs (sv_2mortal (newSViv (req->result))); |
576 |
break; |
577 |
|
578 |
default: |
579 |
PUSHs (sv_2mortal (newSViv (req->result))); |
580 |
break; |
581 |
} |
582 |
|
583 |
errno = req->errorno; |
584 |
|
585 |
PUTBACK; |
586 |
call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD); |
587 |
SPAGAIN; |
588 |
|
589 |
FREETMPS; |
590 |
LEAVE; |
591 |
|
592 |
PUTBACK; |
593 |
} |
594 |
|
595 |
if (req->grp) |
596 |
{ |
597 |
aio_req grp = req->grp; |
598 |
|
599 |
/* unlink request */ |
600 |
if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
601 |
if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
602 |
|
603 |
if (grp->grp_first == req) |
604 |
grp->grp_first = req->grp_next; |
605 |
|
606 |
aio_grp_dec (grp); |
607 |
} |
608 |
|
609 |
return !SvTRUE (ERRSV); |
610 |
} |
611 |
|
612 |
static void req_destroy (aio_req req) |
613 |
{ |
614 |
if (req->self) |
615 |
{ |
616 |
sv_unmagic (req->self, PERL_MAGIC_ext); |
617 |
SvREFCNT_dec (req->self); |
618 |
} |
619 |
|
620 |
SvREFCNT_dec (req->sv1); |
621 |
SvREFCNT_dec (req->sv2); |
622 |
SvREFCNT_dec (req->callback); |
623 |
|
624 |
if (req->flags & FLAG_PTR2_FREE) |
625 |
free (req->ptr2); |
626 |
|
627 |
Safefree (req); |
628 |
} |
629 |
|
630 |
static void req_cancel_subs (aio_req grp) |
631 |
{ |
632 |
aio_req sub; |
633 |
|
634 |
if (grp->type != REQ_GROUP) |
635 |
return; |
636 |
|
637 |
SvREFCNT_dec (grp->sv2); |
638 |
grp->sv2 = 0; |
639 |
|
640 |
for (sub = grp->grp_first; sub; sub = sub->grp_next) |
641 |
req_cancel (sub); |
642 |
} |
643 |
|
644 |
static void req_cancel (aio_req req) |
645 |
{ |
646 |
req->flags |= FLAG_CANCELLED; |
647 |
|
648 |
req_cancel_subs (req); |
649 |
} |
650 |
|
651 |
#ifdef USE_SOCKETS_AS_HANDLES |
652 |
# define TO_SOCKET(x) (win32_get_osfhandle (x)) |
653 |
#else |
654 |
# define TO_SOCKET(x) (x) |
655 |
#endif |
656 |
|
657 |
static void |
658 |
create_respipe () |
659 |
{ |
660 |
int old_readfd = respipe [0]; |
661 |
|
662 |
if (respipe [1] >= 0) |
663 |
respipe_close (TO_SOCKET (respipe [1])); |
664 |
|
665 |
#ifdef _WIN32 |
666 |
if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe)) |
667 |
#else |
668 |
if (pipe (respipe)) |
669 |
#endif |
670 |
croak ("unable to initialize result pipe"); |
671 |
|
672 |
if (old_readfd >= 0) |
673 |
{ |
674 |
if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0) |
675 |
croak ("unable to initialize result pipe(2)"); |
676 |
|
677 |
respipe_close (respipe [0]); |
678 |
respipe [0] = old_readfd; |
679 |
} |
680 |
|
681 |
#ifdef _WIN32 |
682 |
int arg = 1; |
683 |
if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg) |
684 |
|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg)) |
685 |
#else |
686 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK) |
687 |
|| fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
688 |
#endif |
689 |
croak ("unable to initialize result pipe(3)"); |
690 |
|
691 |
respipe_osf [0] = TO_SOCKET (respipe [0]); |
692 |
respipe_osf [1] = TO_SOCKET (respipe [1]); |
693 |
} |
694 |
|
695 |
X_THREAD_PROC (aio_proc); |
696 |
|
697 |
static void start_thread (void) |
698 |
{ |
699 |
worker *wrk = calloc (1, sizeof (worker)); |
700 |
|
701 |
if (!wrk) |
702 |
croak ("unable to allocate worker thread data"); |
703 |
|
704 |
X_LOCK (wrklock); |
705 |
|
706 |
if (thread_create (&wrk->tid, aio_proc, (void *)wrk)) |
707 |
{ |
708 |
wrk->prev = &wrk_first; |
709 |
wrk->next = wrk_first.next; |
710 |
wrk_first.next->prev = wrk; |
711 |
wrk_first.next = wrk; |
712 |
++started; |
713 |
} |
714 |
else |
715 |
free (wrk); |
716 |
|
717 |
X_UNLOCK (wrklock); |
718 |
} |
719 |
|
720 |
static void maybe_start_thread () |
721 |
{ |
722 |
if (get_nthreads () >= wanted) |
723 |
return; |
724 |
|
725 |
/* todo: maybe use idle here, but might be less exact */ |
726 |
if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs) |
727 |
return; |
728 |
|
729 |
start_thread (); |
730 |
} |
731 |
|
732 |
static void req_send (aio_req req) |
733 |
{ |
734 |
block_sig (); |
735 |
|
736 |
++nreqs; |
737 |
|
738 |
X_LOCK (reqlock); |
739 |
++nready; |
740 |
reqq_push (&req_queue, req); |
741 |
X_COND_SIGNAL (reqwait); |
742 |
X_UNLOCK (reqlock); |
743 |
|
744 |
unblock_sig (); |
745 |
|
746 |
maybe_start_thread (); |
747 |
} |
748 |
|
749 |
static void end_thread (void) |
750 |
{ |
751 |
aio_req req; |
752 |
|
753 |
Newz (0, req, 1, aio_cb); |
754 |
|
755 |
req->type = REQ_QUIT; |
756 |
req->pri = PRI_MAX + PRI_BIAS; |
757 |
|
758 |
X_LOCK (reqlock); |
759 |
reqq_push (&req_queue, req); |
760 |
X_COND_SIGNAL (reqwait); |
761 |
X_UNLOCK (reqlock); |
762 |
|
763 |
X_LOCK (wrklock); |
764 |
--started; |
765 |
X_UNLOCK (wrklock); |
766 |
} |
767 |
|
768 |
static void set_max_idle (int nthreads) |
769 |
{ |
770 |
if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
771 |
max_idle = nthreads <= 0 ? 1 : nthreads; |
772 |
if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
773 |
} |
774 |
|
775 |
static void min_parallel (int nthreads) |
776 |
{ |
777 |
if (wanted < nthreads) |
778 |
wanted = nthreads; |
779 |
} |
780 |
|
781 |
static void max_parallel (int nthreads) |
782 |
{ |
783 |
if (wanted > nthreads) |
784 |
wanted = nthreads; |
785 |
|
786 |
while (started > wanted) |
787 |
end_thread (); |
788 |
} |
789 |
|
790 |
static void poll_wait () |
791 |
{ |
792 |
fd_set rfd; |
793 |
|
794 |
while (nreqs) |
795 |
{ |
796 |
int size; |
797 |
if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
798 |
size = res_queue.size; |
799 |
if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
800 |
|
801 |
if (size) |
802 |
return; |
803 |
|
804 |
maybe_start_thread (); |
805 |
|
806 |
FD_ZERO (&rfd); |
807 |
FD_SET (respipe [0], &rfd); |
808 |
|
809 |
PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0); |
810 |
} |
811 |
} |
812 |
|
813 |
static int poll_cb () |
814 |
{ |
815 |
dSP; |
816 |
int count = 0; |
817 |
int maxreqs = max_poll_reqs; |
818 |
int do_croak = 0; |
819 |
struct timeval tv_start, tv_now; |
820 |
aio_req req; |
821 |
|
822 |
if (max_poll_time) |
823 |
gettimeofday (&tv_start, 0); |
824 |
|
825 |
block_sig (); |
826 |
|
827 |
for (;;) |
828 |
{ |
829 |
for (;;) |
830 |
{ |
831 |
maybe_start_thread (); |
832 |
|
833 |
X_LOCK (reslock); |
834 |
req = reqq_shift (&res_queue); |
835 |
|
836 |
if (req) |
837 |
{ |
838 |
--npending; |
839 |
|
840 |
if (!res_queue.size) |
841 |
{ |
842 |
/* read any signals sent by the worker threads */ |
843 |
char buf [4]; |
844 |
while (respipe_read (respipe [0], buf, 4) == 4) |
845 |
; |
846 |
} |
847 |
} |
848 |
|
849 |
X_UNLOCK (reslock); |
850 |
|
851 |
if (!req) |
852 |
break; |
853 |
|
854 |
--nreqs; |
855 |
|
856 |
if (req->type == REQ_GROUP && req->size) |
857 |
{ |
858 |
req->int1 = 1; /* mark request as delayed */ |
859 |
continue; |
860 |
} |
861 |
else |
862 |
{ |
863 |
if (!req_invoke (req)) |
864 |
{ |
865 |
req_destroy (req); |
866 |
unblock_sig (); |
867 |
croak (0); |
868 |
} |
869 |
|
870 |
count++; |
871 |
} |
872 |
|
873 |
req_destroy (req); |
874 |
|
875 |
if (maxreqs && !--maxreqs) |
876 |
break; |
877 |
|
878 |
if (max_poll_time) |
879 |
{ |
880 |
gettimeofday (&tv_now, 0); |
881 |
|
882 |
if (tvdiff (&tv_start, &tv_now) >= max_poll_time) |
883 |
break; |
884 |
} |
885 |
} |
886 |
|
887 |
if (nreqs <= max_outstanding) |
888 |
break; |
889 |
|
890 |
poll_wait (); |
891 |
|
892 |
++maxreqs; |
893 |
} |
894 |
|
895 |
unblock_sig (); |
896 |
return count; |
897 |
} |
898 |
|
899 |
/*****************************************************************************/ |
900 |
/* work around various missing functions */ |
901 |
|
902 |
#if !HAVE_PREADWRITE |
903 |
# define pread aio_pread |
904 |
# define pwrite aio_pwrite |
905 |
|
906 |
/* |
907 |
* make our pread/pwrite safe against themselves, but not against |
908 |
* normal read/write by using a mutex. slows down execution a lot, |
909 |
* but that's your problem, not mine. |
910 |
*/ |
911 |
static mutex_t preadwritelock = X_MUTEX_INIT; |
912 |
|
913 |
static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
914 |
{ |
915 |
ssize_t res; |
916 |
off_t ooffset; |
917 |
|
918 |
X_LOCK (preadwritelock); |
919 |
ooffset = lseek (fd, 0, SEEK_CUR); |
920 |
lseek (fd, offset, SEEK_SET); |
921 |
res = read (fd, buf, count); |
922 |
lseek (fd, ooffset, SEEK_SET); |
923 |
X_UNLOCK (preadwritelock); |
924 |
|
925 |
return res; |
926 |
} |
927 |
|
928 |
static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
929 |
{ |
930 |
ssize_t res; |
931 |
off_t ooffset; |
932 |
|
933 |
X_LOCK (preadwritelock); |
934 |
ooffset = lseek (fd, 0, SEEK_CUR); |
935 |
lseek (fd, offset, SEEK_SET); |
936 |
res = write (fd, buf, count); |
937 |
lseek (fd, offset, SEEK_SET); |
938 |
X_UNLOCK (preadwritelock); |
939 |
|
940 |
return res; |
941 |
} |
942 |
#endif |
943 |
|
944 |
#ifndef HAVE_FUTIMES |
945 |
|
946 |
# define utimes(path,times) aio_utimes (path, times) |
947 |
# define futimes(fd,times) aio_futimes (fd, times) |
948 |
|
949 |
int aio_utimes (const char *filename, const struct timeval times[2]) |
950 |
{ |
951 |
if (times) |
952 |
{ |
953 |
struct utimbuf buf; |
954 |
|
955 |
buf.actime = times[0].tv_sec; |
956 |
buf.modtime = times[1].tv_sec; |
957 |
|
958 |
return utime (filename, &buf); |
959 |
} |
960 |
else |
961 |
return utime (filename, 0); |
962 |
} |
963 |
|
964 |
int aio_futimes (int fd, const struct timeval tv[2]) |
965 |
{ |
966 |
errno = ENOSYS; |
967 |
return -1; |
968 |
} |
969 |
|
970 |
#endif |
971 |
|
972 |
#if !HAVE_FDATASYNC |
973 |
# define fdatasync fsync |
974 |
#endif |
975 |
|
976 |
#if !HAVE_READAHEAD |
977 |
# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
978 |
|
979 |
static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
980 |
{ |
981 |
size_t todo = count; |
982 |
dBUF; |
983 |
|
984 |
while (todo > 0) |
985 |
{ |
986 |
size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE; |
987 |
|
988 |
pread (fd, aio_buf, len, offset); |
989 |
offset += len; |
990 |
todo -= len; |
991 |
} |
992 |
|
993 |
errno = 0; |
994 |
return count; |
995 |
} |
996 |
|
997 |
#endif |
998 |
|
999 |
#if !HAVE_READDIR_R |
1000 |
# define readdir_r aio_readdir_r |
1001 |
|
1002 |
static mutex_t readdirlock = X_MUTEX_INIT; |
1003 |
|
1004 |
static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res) |
1005 |
{ |
1006 |
X_DIRENT *e; |
1007 |
int errorno; |
1008 |
|
1009 |
X_LOCK (readdirlock); |
1010 |
|
1011 |
e = readdir (dirp); |
1012 |
errorno = errno; |
1013 |
|
1014 |
if (e) |
1015 |
{ |
1016 |
*res = ent; |
1017 |
strcpy (ent->d_name, e->d_name); |
1018 |
} |
1019 |
else |
1020 |
*res = 0; |
1021 |
|
1022 |
X_UNLOCK (readdirlock); |
1023 |
|
1024 |
errno = errorno; |
1025 |
return e ? 0 : -1; |
1026 |
} |
1027 |
#endif |
1028 |
|
1029 |
/* sendfile always needs emulation */ |
1030 |
static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
1031 |
{ |
1032 |
ssize_t res; |
1033 |
|
1034 |
if (!count) |
1035 |
return 0; |
1036 |
|
1037 |
#if HAVE_SENDFILE |
1038 |
# if __linux |
1039 |
res = sendfile (ofd, ifd, &offset, count); |
1040 |
|
1041 |
# elif __freebsd |
1042 |
/* |
1043 |
* Of course, the freebsd sendfile is a dire hack with no thoughts |
1044 |
* wasted on making it similar to other I/O functions. |
1045 |
*/ |
1046 |
{ |
1047 |
off_t sbytes; |
1048 |
res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
1049 |
|
1050 |
if (res < 0 && sbytes) |
1051 |
/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
1052 |
res = sbytes; |
1053 |
} |
1054 |
|
1055 |
# elif __hpux |
1056 |
res = sendfile (ofd, ifd, offset, count, 0, 0); |
1057 |
|
1058 |
# elif __solaris |
1059 |
{ |
1060 |
struct sendfilevec vec; |
1061 |
size_t sbytes; |
1062 |
|
1063 |
vec.sfv_fd = ifd; |
1064 |
vec.sfv_flag = 0; |
1065 |
vec.sfv_off = offset; |
1066 |
vec.sfv_len = count; |
1067 |
|
1068 |
res = sendfilev (ofd, &vec, 1, &sbytes); |
1069 |
|
1070 |
if (res < 0 && sbytes) |
1071 |
res = sbytes; |
1072 |
} |
1073 |
|
1074 |
# endif |
1075 |
#else |
1076 |
res = -1; |
1077 |
errno = ENOSYS; |
1078 |
#endif |
1079 |
|
1080 |
if (res < 0 |
1081 |
&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1082 |
#if __solaris |
1083 |
|| errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1084 |
#endif |
1085 |
) |
1086 |
) |
1087 |
{ |
1088 |
/* emulate sendfile. this is a major pain in the ass */ |
1089 |
dBUF; |
1090 |
|
1091 |
res = 0; |
1092 |
|
1093 |
while (count) |
1094 |
{ |
1095 |
ssize_t cnt; |
1096 |
|
1097 |
cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
1098 |
|
1099 |
if (cnt <= 0) |
1100 |
{ |
1101 |
if (cnt && !res) res = -1; |
1102 |
break; |
1103 |
} |
1104 |
|
1105 |
cnt = write (ofd, aio_buf, cnt); |
1106 |
|
1107 |
if (cnt <= 0) |
1108 |
{ |
1109 |
if (cnt && !res) res = -1; |
1110 |
break; |
1111 |
} |
1112 |
|
1113 |
offset += cnt; |
1114 |
res += cnt; |
1115 |
count -= cnt; |
1116 |
} |
1117 |
} |
1118 |
|
1119 |
return res; |
1120 |
} |
1121 |
|
1122 |
/* read a full directory */ |
1123 |
static void scandir_ (aio_req req, worker *self) |
1124 |
{ |
1125 |
DIR *dirp; |
1126 |
union |
1127 |
{ |
1128 |
X_DIRENT d; |
1129 |
char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1]; |
1130 |
} *u; |
1131 |
X_DIRENT *entp; |
1132 |
char *name, *names; |
1133 |
int memlen = 4096; |
1134 |
int memofs = 0; |
1135 |
int res = 0; |
1136 |
|
1137 |
X_LOCK (wrklock); |
1138 |
self->dirp = dirp = opendir (req->ptr1); |
1139 |
self->dbuf = u = malloc (sizeof (*u)); |
1140 |
req->flags |= FLAG_PTR2_FREE; |
1141 |
req->ptr2 = names = malloc (memlen); |
1142 |
X_UNLOCK (wrklock); |
1143 |
|
1144 |
if (dirp && u && names) |
1145 |
for (;;) |
1146 |
{ |
1147 |
errno = 0; |
1148 |
readdir_r (dirp, &u->d, &entp); |
1149 |
|
1150 |
if (!entp) |
1151 |
break; |
1152 |
|
1153 |
name = entp->d_name; |
1154 |
|
1155 |
if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1156 |
{ |
1157 |
int len = strlen (name) + 1; |
1158 |
|
1159 |
res++; |
1160 |
|
1161 |
while (memofs + len > memlen) |
1162 |
{ |
1163 |
memlen *= 2; |
1164 |
X_LOCK (wrklock); |
1165 |
req->ptr2 = names = realloc (names, memlen); |
1166 |
X_UNLOCK (wrklock); |
1167 |
|
1168 |
if (!names) |
1169 |
break; |
1170 |
} |
1171 |
|
1172 |
memcpy (names + memofs, name, len); |
1173 |
memofs += len; |
1174 |
} |
1175 |
} |
1176 |
|
1177 |
if (errno) |
1178 |
res = -1; |
1179 |
|
1180 |
req->result = res; |
1181 |
} |
1182 |
|
1183 |
/*****************************************************************************/ |
1184 |
|
1185 |
X_THREAD_PROC (aio_proc) |
1186 |
{ |
1187 |
{//D |
1188 |
aio_req req; |
1189 |
struct timespec ts; |
1190 |
worker *self = (worker *)thr_arg; |
1191 |
|
1192 |
/* try to distribute timeouts somewhat randomly */ |
1193 |
ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1194 |
|
1195 |
for (;;) |
1196 |
{ |
1197 |
ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1198 |
|
1199 |
X_LOCK (reqlock); |
1200 |
|
1201 |
for (;;) |
1202 |
{ |
1203 |
self->req = req = reqq_shift (&req_queue); |
1204 |
|
1205 |
if (req) |
1206 |
break; |
1207 |
|
1208 |
++idle; |
1209 |
|
1210 |
if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) |
1211 |
== ETIMEDOUT) |
1212 |
{ |
1213 |
if (idle > max_idle) |
1214 |
{ |
1215 |
--idle; |
1216 |
X_UNLOCK (reqlock); |
1217 |
X_LOCK (wrklock); |
1218 |
--started; |
1219 |
X_UNLOCK (wrklock); |
1220 |
goto quit; |
1221 |
} |
1222 |
|
1223 |
/* we are allowed to idle, so do so without any timeout */ |
1224 |
X_COND_WAIT (reqwait, reqlock); |
1225 |
ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1226 |
} |
1227 |
|
1228 |
--idle; |
1229 |
} |
1230 |
|
1231 |
--nready; |
1232 |
|
1233 |
X_UNLOCK (reqlock); |
1234 |
|
1235 |
errno = 0; /* strictly unnecessary */ |
1236 |
|
1237 |
if (!(req->flags & FLAG_CANCELLED)) |
1238 |
switch (req->type) |
1239 |
{ |
1240 |
case REQ_READ: req->result = req->offs >= 0 |
1241 |
? pread (req->int1, req->ptr1, req->size, req->offs) |
1242 |
: read (req->int1, req->ptr1, req->size); break; |
1243 |
case REQ_WRITE: req->result = req->offs >= 0 |
1244 |
? pwrite (req->int1, req->ptr1, req->size, req->offs) |
1245 |
: write (req->int1, req->ptr1, req->size); break; |
1246 |
|
1247 |
case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1248 |
case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break; |
1249 |
|
1250 |
case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break; |
1251 |
case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break; |
1252 |
case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break; |
1253 |
|
1254 |
case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1255 |
case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1256 |
case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break; |
1257 |
case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break; |
1258 |
case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
1259 |
case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
1260 |
|
1261 |
case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break; |
1262 |
case REQ_CLOSE: req->result = close (req->int1); break; |
1263 |
case REQ_UNLINK: req->result = unlink (req->ptr1); break; |
1264 |
case REQ_RMDIR: req->result = rmdir (req->ptr1); break; |
1265 |
case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break; |
1266 |
case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break; |
1267 |
case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break; |
1268 |
case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break; |
1269 |
case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break; |
1270 |
case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break; |
1271 |
|
1272 |
case REQ_FDATASYNC: req->result = fdatasync (req->int1); break; |
1273 |
case REQ_FSYNC: req->result = fsync (req->int1); break; |
1274 |
case REQ_READDIR: scandir_ (req, self); break; |
1275 |
|
1276 |
case REQ_BUSY: |
1277 |
#ifdef _WIN32 |
1278 |
Sleep (req->nv1 * 1000.); |
1279 |
#else |
1280 |
{ |
1281 |
struct timeval tv; |
1282 |
|
1283 |
tv.tv_sec = req->nv1; |
1284 |
tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1285 |
|
1286 |
req->result = select (0, 0, 0, 0, &tv); |
1287 |
} |
1288 |
#endif |
1289 |
break; |
1290 |
|
1291 |
case REQ_UTIME: |
1292 |
case REQ_FUTIME: |
1293 |
{ |
1294 |
struct timeval tv[2]; |
1295 |
struct timeval *times; |
1296 |
|
1297 |
if (req->nv1 != -1. || req->nv2 != -1.) |
1298 |
{ |
1299 |
tv[0].tv_sec = req->nv1; |
1300 |
tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; |
1301 |
tv[1].tv_sec = req->nv2; |
1302 |
tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; |
1303 |
|
1304 |
times = tv; |
1305 |
} |
1306 |
else |
1307 |
times = 0; |
1308 |
|
1309 |
|
1310 |
req->result = req->type == REQ_FUTIME |
1311 |
? futimes (req->int1, times) |
1312 |
: utimes (req->ptr1, times); |
1313 |
} |
1314 |
|
1315 |
case REQ_GROUP: |
1316 |
case REQ_NOP: |
1317 |
break; |
1318 |
|
1319 |
case REQ_QUIT: |
1320 |
goto quit; |
1321 |
|
1322 |
default: |
1323 |
req->result = -1; |
1324 |
break; |
1325 |
} |
1326 |
|
1327 |
req->errorno = errno; |
1328 |
|
1329 |
X_LOCK (reslock); |
1330 |
|
1331 |
++npending; |
1332 |
|
1333 |
if (!reqq_push (&res_queue, req)) |
1334 |
{ |
1335 |
/* write a dummy byte to the pipe so fh becomes ready */ |
1336 |
respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1); |
1337 |
|
1338 |
/* optionally signal the main thread asynchronously */ |
1339 |
if (main_sig) |
1340 |
pthread_kill (main_tid, main_sig); |
1341 |
} |
1342 |
|
1343 |
self->req = 0; |
1344 |
worker_clear (self); |
1345 |
|
1346 |
X_UNLOCK (reslock); |
1347 |
} |
1348 |
|
1349 |
quit: |
1350 |
X_LOCK (wrklock); |
1351 |
worker_free (self); |
1352 |
X_UNLOCK (wrklock); |
1353 |
|
1354 |
return 0; |
1355 |
}//D |
1356 |
} |
1357 |
|
1358 |
/*****************************************************************************/ |
1359 |
|
1360 |
static void atfork_prepare (void) |
1361 |
{ |
1362 |
X_LOCK (wrklock); |
1363 |
X_LOCK (reqlock); |
1364 |
X_LOCK (reslock); |
1365 |
#if !HAVE_PREADWRITE |
1366 |
X_LOCK (preadwritelock); |
1367 |
#endif |
1368 |
#if !HAVE_READDIR_R |
1369 |
X_LOCK (readdirlock); |
1370 |
#endif |
1371 |
} |
1372 |
|
1373 |
static void atfork_parent (void) |
1374 |
{ |
1375 |
#if !HAVE_READDIR_R |
1376 |
X_UNLOCK (readdirlock); |
1377 |
#endif |
1378 |
#if !HAVE_PREADWRITE |
1379 |
X_UNLOCK (preadwritelock); |
1380 |
#endif |
1381 |
X_UNLOCK (reslock); |
1382 |
X_UNLOCK (reqlock); |
1383 |
X_UNLOCK (wrklock); |
1384 |
} |
1385 |
|
1386 |
static void atfork_child (void) |
1387 |
{ |
1388 |
aio_req prv; |
1389 |
|
1390 |
while (prv = reqq_shift (&req_queue)) |
1391 |
req_destroy (prv); |
1392 |
|
1393 |
while (prv = reqq_shift (&res_queue)) |
1394 |
req_destroy (prv); |
1395 |
|
1396 |
while (wrk_first.next != &wrk_first) |
1397 |
{ |
1398 |
worker *wrk = wrk_first.next; |
1399 |
|
1400 |
if (wrk->req) |
1401 |
req_destroy (wrk->req); |
1402 |
|
1403 |
worker_clear (wrk); |
1404 |
worker_free (wrk); |
1405 |
} |
1406 |
|
1407 |
started = 0; |
1408 |
idle = 0; |
1409 |
nreqs = 0; |
1410 |
nready = 0; |
1411 |
npending = 0; |
1412 |
|
1413 |
create_respipe (); |
1414 |
|
1415 |
atfork_parent (); |
1416 |
} |
1417 |
|
1418 |
#define dREQ \ |
1419 |
aio_req req; \ |
1420 |
int req_pri = next_pri; \ |
1421 |
next_pri = DEFAULT_PRI + PRI_BIAS; \ |
1422 |
\ |
1423 |
if (SvOK (callback) && !SvROK (callback)) \ |
1424 |
croak ("callback must be undef or of reference type"); \ |
1425 |
\ |
1426 |
Newz (0, req, 1, aio_cb); \ |
1427 |
if (!req) \ |
1428 |
croak ("out of memory during aio_req allocation"); \ |
1429 |
\ |
1430 |
req->callback = newSVsv (callback); \ |
1431 |
req->pri = req_pri |
1432 |
|
1433 |
#define REQ_SEND \ |
1434 |
req_send (req); \ |
1435 |
\ |
1436 |
if (GIMME_V != G_VOID) \ |
1437 |
XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
1438 |
|
1439 |
MODULE = IO::AIO PACKAGE = IO::AIO |
1440 |
|
1441 |
PROTOTYPES: ENABLE |
1442 |
|
1443 |
BOOT: |
1444 |
{ |
1445 |
stash = gv_stashpv ("IO::AIO", 1); |
1446 |
|
1447 |
newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
1448 |
newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
1449 |
newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
1450 |
newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT)); |
1451 |
newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC)); |
1452 |
#ifdef _WIN32 |
1453 |
X_MUTEX_CHECK (wrklock); |
1454 |
X_MUTEX_CHECK (reslock); |
1455 |
X_MUTEX_CHECK (reqlock); |
1456 |
X_MUTEX_CHECK (reqwait); |
1457 |
X_MUTEX_CHECK (preadwritelock); |
1458 |
X_MUTEX_CHECK (readdirlock); |
1459 |
|
1460 |
X_COND_CHECK (reqwait); |
1461 |
#else |
1462 |
newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO)); |
1463 |
newCONSTSUB (stash, "SIGIO", newSViv (SIGIO)); |
1464 |
#endif |
1465 |
|
1466 |
create_respipe (); |
1467 |
|
1468 |
X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child); |
1469 |
} |
1470 |
|
1471 |
void |
1472 |
max_poll_reqs (int nreqs) |
1473 |
PROTOTYPE: $ |
1474 |
CODE: |
1475 |
max_poll_reqs = nreqs; |
1476 |
|
1477 |
void |
1478 |
max_poll_time (double nseconds) |
1479 |
PROTOTYPE: $ |
1480 |
CODE: |
1481 |
max_poll_time = nseconds * AIO_TICKS; |
1482 |
|
1483 |
void |
1484 |
min_parallel (int nthreads) |
1485 |
PROTOTYPE: $ |
1486 |
|
1487 |
void |
1488 |
max_parallel (int nthreads) |
1489 |
PROTOTYPE: $ |
1490 |
|
1491 |
void |
1492 |
max_idle (int nthreads) |
1493 |
PROTOTYPE: $ |
1494 |
CODE: |
1495 |
set_max_idle (nthreads); |
1496 |
|
1497 |
int |
1498 |
max_outstanding (int maxreqs) |
1499 |
PROTOTYPE: $ |
1500 |
CODE: |
1501 |
RETVAL = max_outstanding; |
1502 |
max_outstanding = maxreqs; |
1503 |
OUTPUT: |
1504 |
RETVAL |
1505 |
|
1506 |
void |
1507 |
aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) |
1508 |
PROTOTYPE: $$$;$ |
1509 |
PPCODE: |
1510 |
{ |
1511 |
dREQ; |
1512 |
|
1513 |
req->type = REQ_OPEN; |
1514 |
req->sv1 = newSVsv (pathname); |
1515 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1516 |
req->int1 = flags; |
1517 |
req->mode = mode; |
1518 |
|
1519 |
REQ_SEND; |
1520 |
} |
1521 |
|
1522 |
void |
1523 |
aio_fsync (SV *fh, SV *callback=&PL_sv_undef) |
1524 |
PROTOTYPE: $;$ |
1525 |
ALIAS: |
1526 |
aio_fsync = REQ_FSYNC |
1527 |
aio_fdatasync = REQ_FDATASYNC |
1528 |
PPCODE: |
1529 |
{ |
1530 |
dREQ; |
1531 |
|
1532 |
req->type = ix; |
1533 |
req->sv1 = newSVsv (fh); |
1534 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1535 |
|
1536 |
REQ_SEND (req); |
1537 |
} |
1538 |
|
1539 |
int |
1540 |
_dup (int fd) |
1541 |
PROTOTYPE: $ |
1542 |
CODE: |
1543 |
RETVAL = dup (fd); |
1544 |
OUTPUT: |
1545 |
RETVAL |
1546 |
|
1547 |
void |
1548 |
_aio_close (int fd, SV *callback=&PL_sv_undef) |
1549 |
PROTOTYPE: $;$ |
1550 |
PPCODE: |
1551 |
{ |
1552 |
dREQ; |
1553 |
|
1554 |
req->type = REQ_CLOSE; |
1555 |
req->int1 = fd; |
1556 |
|
1557 |
REQ_SEND (req); |
1558 |
} |
1559 |
|
1560 |
void |
1561 |
aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) |
1562 |
ALIAS: |
1563 |
aio_read = REQ_READ |
1564 |
aio_write = REQ_WRITE |
1565 |
PROTOTYPE: $$$$$;$ |
1566 |
PPCODE: |
1567 |
{ |
1568 |
STRLEN svlen; |
1569 |
char *svptr = SvPVbyte (data, svlen); |
1570 |
UV len = SvUV (length); |
1571 |
|
1572 |
SvUPGRADE (data, SVt_PV); |
1573 |
SvPOK_on (data); |
1574 |
|
1575 |
if (dataoffset < 0) |
1576 |
dataoffset += svlen; |
1577 |
|
1578 |
if (dataoffset < 0 || dataoffset > svlen) |
1579 |
croak ("dataoffset outside of data scalar"); |
1580 |
|
1581 |
if (ix == REQ_WRITE) |
1582 |
{ |
1583 |
/* write: check length and adjust. */ |
1584 |
if (!SvOK (length) || len + dataoffset > svlen) |
1585 |
len = svlen - dataoffset; |
1586 |
} |
1587 |
else |
1588 |
{ |
1589 |
/* read: grow scalar as necessary */ |
1590 |
svptr = SvGROW (data, len + dataoffset + 1); |
1591 |
} |
1592 |
|
1593 |
if (len < 0) |
1594 |
croak ("length must not be negative"); |
1595 |
|
1596 |
{ |
1597 |
dREQ; |
1598 |
|
1599 |
req->type = ix; |
1600 |
req->sv1 = newSVsv (fh); |
1601 |
req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
1602 |
: IoOFP (sv_2io (fh))); |
1603 |
req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
1604 |
req->size = len; |
1605 |
req->sv2 = SvREFCNT_inc (data); |
1606 |
req->ptr1 = (char *)svptr + dataoffset; |
1607 |
req->stroffset = dataoffset; |
1608 |
|
1609 |
if (!SvREADONLY (data)) |
1610 |
{ |
1611 |
SvREADONLY_on (data); |
1612 |
req->flags |= FLAG_SV2_RO_OFF; |
1613 |
} |
1614 |
|
1615 |
REQ_SEND; |
1616 |
} |
1617 |
} |
1618 |
|
1619 |
void |
1620 |
aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) |
1621 |
PROTOTYPE: $$;$ |
1622 |
PPCODE: |
1623 |
{ |
1624 |
SV *data; |
1625 |
dREQ; |
1626 |
|
1627 |
data = newSV (NAME_MAX); |
1628 |
SvPOK_on (data); |
1629 |
|
1630 |
req->type = REQ_READLINK; |
1631 |
req->sv1 = newSVsv (path); |
1632 |
req->ptr2 = SvPVbyte_nolen (req->sv1); |
1633 |
req->sv2 = data; |
1634 |
req->ptr1 = SvPVbyte_nolen (data); |
1635 |
|
1636 |
REQ_SEND; |
1637 |
} |
1638 |
|
1639 |
void |
1640 |
aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) |
1641 |
PROTOTYPE: $$$$;$ |
1642 |
PPCODE: |
1643 |
{ |
1644 |
dREQ; |
1645 |
|
1646 |
req->type = REQ_SENDFILE; |
1647 |
req->sv1 = newSVsv (out_fh); |
1648 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
1649 |
req->sv2 = newSVsv (in_fh); |
1650 |
req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
1651 |
req->offs = SvVAL64 (in_offset); |
1652 |
req->size = length; |
1653 |
|
1654 |
REQ_SEND; |
1655 |
} |
1656 |
|
1657 |
void |
1658 |
aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) |
1659 |
PROTOTYPE: $$$;$ |
1660 |
PPCODE: |
1661 |
{ |
1662 |
dREQ; |
1663 |
|
1664 |
req->type = REQ_READAHEAD; |
1665 |
req->sv1 = newSVsv (fh); |
1666 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1667 |
req->offs = SvVAL64 (offset); |
1668 |
req->size = length; |
1669 |
|
1670 |
REQ_SEND; |
1671 |
} |
1672 |
|
1673 |
void |
1674 |
aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) |
1675 |
ALIAS: |
1676 |
aio_stat = REQ_STAT |
1677 |
aio_lstat = REQ_LSTAT |
1678 |
PPCODE: |
1679 |
{ |
1680 |
dREQ; |
1681 |
|
1682 |
req->ptr2 = malloc (sizeof (Stat_t)); |
1683 |
if (!req->ptr2) |
1684 |
{ |
1685 |
req_destroy (req); |
1686 |
croak ("out of memory during aio_stat statdata allocation"); |
1687 |
} |
1688 |
|
1689 |
req->flags |= FLAG_PTR2_FREE; |
1690 |
req->sv1 = newSVsv (fh_or_path); |
1691 |
|
1692 |
if (SvPOK (fh_or_path)) |
1693 |
{ |
1694 |
req->type = ix; |
1695 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1696 |
} |
1697 |
else |
1698 |
{ |
1699 |
req->type = REQ_FSTAT; |
1700 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1701 |
} |
1702 |
|
1703 |
REQ_SEND; |
1704 |
} |
1705 |
|
1706 |
void |
1707 |
aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) |
1708 |
PPCODE: |
1709 |
{ |
1710 |
dREQ; |
1711 |
|
1712 |
req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; |
1713 |
req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; |
1714 |
req->sv1 = newSVsv (fh_or_path); |
1715 |
|
1716 |
if (SvPOK (fh_or_path)) |
1717 |
{ |
1718 |
req->type = REQ_UTIME; |
1719 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1720 |
} |
1721 |
else |
1722 |
{ |
1723 |
req->type = REQ_FUTIME; |
1724 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1725 |
} |
1726 |
|
1727 |
REQ_SEND; |
1728 |
} |
1729 |
|
1730 |
void |
1731 |
aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) |
1732 |
PPCODE: |
1733 |
{ |
1734 |
dREQ; |
1735 |
|
1736 |
req->sv1 = newSVsv (fh_or_path); |
1737 |
req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
1738 |
|
1739 |
if (SvPOK (fh_or_path)) |
1740 |
{ |
1741 |
req->type = REQ_TRUNCATE; |
1742 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1743 |
} |
1744 |
else |
1745 |
{ |
1746 |
req->type = REQ_FTRUNCATE; |
1747 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1748 |
} |
1749 |
|
1750 |
REQ_SEND; |
1751 |
} |
1752 |
|
1753 |
void |
1754 |
aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) |
1755 |
PPCODE: |
1756 |
{ |
1757 |
dREQ; |
1758 |
|
1759 |
req->mode = mode; |
1760 |
req->sv1 = newSVsv (fh_or_path); |
1761 |
|
1762 |
if (SvPOK (fh_or_path)) |
1763 |
{ |
1764 |
req->type = REQ_CHMOD; |
1765 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1766 |
} |
1767 |
else |
1768 |
{ |
1769 |
req->type = REQ_FCHMOD; |
1770 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1771 |
} |
1772 |
|
1773 |
REQ_SEND; |
1774 |
} |
1775 |
|
1776 |
void |
1777 |
aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) |
1778 |
PPCODE: |
1779 |
{ |
1780 |
dREQ; |
1781 |
|
1782 |
req->int2 = SvOK (uid) ? SvIV (uid) : -1; |
1783 |
req->int3 = SvOK (gid) ? SvIV (gid) : -1; |
1784 |
req->sv1 = newSVsv (fh_or_path); |
1785 |
|
1786 |
if (SvPOK (fh_or_path)) |
1787 |
{ |
1788 |
req->type = REQ_CHOWN; |
1789 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1790 |
} |
1791 |
else |
1792 |
{ |
1793 |
req->type = REQ_FCHOWN; |
1794 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1795 |
} |
1796 |
|
1797 |
REQ_SEND; |
1798 |
} |
1799 |
|
1800 |
void |
1801 |
aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) |
1802 |
ALIAS: |
1803 |
aio_unlink = REQ_UNLINK |
1804 |
aio_rmdir = REQ_RMDIR |
1805 |
aio_readdir = REQ_READDIR |
1806 |
PPCODE: |
1807 |
{ |
1808 |
dREQ; |
1809 |
|
1810 |
req->type = ix; |
1811 |
req->sv1 = newSVsv (pathname); |
1812 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1813 |
|
1814 |
REQ_SEND; |
1815 |
} |
1816 |
|
1817 |
void |
1818 |
aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) |
1819 |
PPCODE: |
1820 |
{ |
1821 |
dREQ; |
1822 |
|
1823 |
req->type = REQ_MKDIR; |
1824 |
req->sv1 = newSVsv (pathname); |
1825 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1826 |
req->mode = mode; |
1827 |
|
1828 |
REQ_SEND; |
1829 |
} |
1830 |
|
1831 |
void |
1832 |
aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef) |
1833 |
ALIAS: |
1834 |
aio_link = REQ_LINK |
1835 |
aio_symlink = REQ_SYMLINK |
1836 |
aio_rename = REQ_RENAME |
1837 |
PPCODE: |
1838 |
{ |
1839 |
dREQ; |
1840 |
|
1841 |
req->type = ix; |
1842 |
req->sv2 = newSVsv (oldpath); |
1843 |
req->ptr2 = SvPVbyte_nolen (req->sv2); |
1844 |
req->sv1 = newSVsv (newpath); |
1845 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1846 |
|
1847 |
REQ_SEND; |
1848 |
} |
1849 |
|
1850 |
void |
1851 |
aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) |
1852 |
PPCODE: |
1853 |
{ |
1854 |
dREQ; |
1855 |
|
1856 |
req->type = REQ_MKNOD; |
1857 |
req->sv1 = newSVsv (pathname); |
1858 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
1859 |
req->mode = (mode_t)mode; |
1860 |
req->offs = dev; |
1861 |
|
1862 |
REQ_SEND; |
1863 |
} |
1864 |
|
1865 |
void |
1866 |
aio_busy (double delay, SV *callback=&PL_sv_undef) |
1867 |
PPCODE: |
1868 |
{ |
1869 |
dREQ; |
1870 |
|
1871 |
req->type = REQ_BUSY; |
1872 |
req->nv1 = delay < 0. ? 0. : delay; |
1873 |
|
1874 |
REQ_SEND; |
1875 |
} |
1876 |
|
1877 |
void |
1878 |
aio_group (SV *callback=&PL_sv_undef) |
1879 |
PROTOTYPE: ;$ |
1880 |
PPCODE: |
1881 |
{ |
1882 |
dREQ; |
1883 |
|
1884 |
req->type = REQ_GROUP; |
1885 |
|
1886 |
req_send (req); |
1887 |
XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1888 |
} |
1889 |
|
1890 |
void |
1891 |
aio_nop (SV *callback=&PL_sv_undef) |
1892 |
PPCODE: |
1893 |
{ |
1894 |
dREQ; |
1895 |
|
1896 |
req->type = REQ_NOP; |
1897 |
|
1898 |
REQ_SEND; |
1899 |
} |
1900 |
|
1901 |
int |
1902 |
aioreq_pri (int pri = 0) |
1903 |
PROTOTYPE: ;$ |
1904 |
CODE: |
1905 |
RETVAL = next_pri - PRI_BIAS; |
1906 |
if (items > 0) |
1907 |
{ |
1908 |
if (pri < PRI_MIN) pri = PRI_MIN; |
1909 |
if (pri > PRI_MAX) pri = PRI_MAX; |
1910 |
next_pri = pri + PRI_BIAS; |
1911 |
} |
1912 |
OUTPUT: |
1913 |
RETVAL |
1914 |
|
1915 |
void |
1916 |
aioreq_nice (int nice = 0) |
1917 |
CODE: |
1918 |
nice = next_pri - nice; |
1919 |
if (nice < PRI_MIN) nice = PRI_MIN; |
1920 |
if (nice > PRI_MAX) nice = PRI_MAX; |
1921 |
next_pri = nice + PRI_BIAS; |
1922 |
|
1923 |
void |
1924 |
flush () |
1925 |
PROTOTYPE: |
1926 |
CODE: |
1927 |
while (nreqs) |
1928 |
{ |
1929 |
poll_wait (); |
1930 |
poll_cb (); |
1931 |
} |
1932 |
|
1933 |
int |
1934 |
poll() |
1935 |
PROTOTYPE: |
1936 |
CODE: |
1937 |
poll_wait (); |
1938 |
RETVAL = poll_cb (); |
1939 |
OUTPUT: |
1940 |
RETVAL |
1941 |
|
1942 |
int |
1943 |
poll_fileno() |
1944 |
PROTOTYPE: |
1945 |
CODE: |
1946 |
RETVAL = respipe [0]; |
1947 |
OUTPUT: |
1948 |
RETVAL |
1949 |
|
1950 |
int |
1951 |
poll_cb(...) |
1952 |
PROTOTYPE: |
1953 |
CODE: |
1954 |
RETVAL = poll_cb (); |
1955 |
OUTPUT: |
1956 |
RETVAL |
1957 |
|
1958 |
void |
1959 |
poll_wait() |
1960 |
PROTOTYPE: |
1961 |
CODE: |
1962 |
poll_wait (); |
1963 |
|
1964 |
void |
1965 |
setsig (int signum = SIGIO) |
1966 |
PROTOTYPE: ;$ |
1967 |
CODE: |
1968 |
{ |
1969 |
if (block_sig_level) |
1970 |
croak ("cannot call IO::AIO::setsig from within aio_block/callback"); |
1971 |
|
1972 |
X_LOCK (reslock); |
1973 |
main_tid = pthread_self (); |
1974 |
main_sig = signum; |
1975 |
X_UNLOCK (reslock); |
1976 |
|
1977 |
if (main_sig && npending) |
1978 |
pthread_kill (main_tid, main_sig); |
1979 |
} |
1980 |
|
1981 |
void |
1982 |
aio_block (SV *cb) |
1983 |
PROTOTYPE: & |
1984 |
PPCODE: |
1985 |
{ |
1986 |
int count; |
1987 |
|
1988 |
block_sig (); |
1989 |
PUSHMARK (SP); |
1990 |
PUTBACK; |
1991 |
count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL); |
1992 |
SPAGAIN; |
1993 |
unblock_sig (); |
1994 |
|
1995 |
if (SvTRUE (ERRSV)) |
1996 |
croak (0); |
1997 |
|
1998 |
XSRETURN (count); |
1999 |
} |
2000 |
|
2001 |
int |
2002 |
nreqs() |
2003 |
PROTOTYPE: |
2004 |
CODE: |
2005 |
RETVAL = nreqs; |
2006 |
OUTPUT: |
2007 |
RETVAL |
2008 |
|
2009 |
int |
2010 |
nready() |
2011 |
PROTOTYPE: |
2012 |
CODE: |
2013 |
RETVAL = get_nready (); |
2014 |
OUTPUT: |
2015 |
RETVAL |
2016 |
|
2017 |
int |
2018 |
npending() |
2019 |
PROTOTYPE: |
2020 |
CODE: |
2021 |
RETVAL = get_npending (); |
2022 |
OUTPUT: |
2023 |
RETVAL |
2024 |
|
2025 |
int |
2026 |
nthreads() |
2027 |
PROTOTYPE: |
2028 |
CODE: |
2029 |
if (WORDACCESS_UNSAFE) X_LOCK (wrklock); |
2030 |
RETVAL = started; |
2031 |
if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock); |
2032 |
OUTPUT: |
2033 |
RETVAL |
2034 |
|
2035 |
PROTOTYPES: DISABLE |
2036 |
|
2037 |
MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
2038 |
|
2039 |
void |
2040 |
cancel (aio_req_ornot req) |
2041 |
CODE: |
2042 |
req_cancel (req); |
2043 |
|
2044 |
void |
2045 |
cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
2046 |
CODE: |
2047 |
SvREFCNT_dec (req->callback); |
2048 |
req->callback = newSVsv (callback); |
2049 |
|
2050 |
MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
2051 |
|
2052 |
void |
2053 |
add (aio_req grp, ...) |
2054 |
PPCODE: |
2055 |
{ |
2056 |
int i; |
2057 |
aio_req req; |
2058 |
|
2059 |
if (main_sig && !block_sig_level) |
2060 |
croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use"); |
2061 |
|
2062 |
if (grp->int1 == 2) |
2063 |
croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
2064 |
|
2065 |
for (i = 1; i < items; ++i ) |
2066 |
{ |
2067 |
if (GIMME_V != G_VOID) |
2068 |
XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
2069 |
|
2070 |
req = SvAIO_REQ (ST (i)); |
2071 |
|
2072 |
if (req) |
2073 |
{ |
2074 |
++grp->size; |
2075 |
req->grp = grp; |
2076 |
|
2077 |
req->grp_prev = 0; |
2078 |
req->grp_next = grp->grp_first; |
2079 |
|
2080 |
if (grp->grp_first) |
2081 |
grp->grp_first->grp_prev = req; |
2082 |
|
2083 |
grp->grp_first = req; |
2084 |
} |
2085 |
} |
2086 |
} |
2087 |
|
2088 |
void |
2089 |
cancel_subs (aio_req_ornot req) |
2090 |
CODE: |
2091 |
req_cancel_subs (req); |
2092 |
|
2093 |
void |
2094 |
result (aio_req grp, ...) |
2095 |
CODE: |
2096 |
{ |
2097 |
int i; |
2098 |
AV *av; |
2099 |
|
2100 |
grp->errorno = errno; |
2101 |
|
2102 |
av = newAV (); |
2103 |
|
2104 |
for (i = 1; i < items; ++i ) |
2105 |
av_push (av, newSVsv (ST (i))); |
2106 |
|
2107 |
SvREFCNT_dec (grp->sv1); |
2108 |
grp->sv1 = (SV *)av; |
2109 |
} |
2110 |
|
2111 |
void |
2112 |
errno (aio_req grp, int errorno = errno) |
2113 |
CODE: |
2114 |
grp->errorno = errorno; |
2115 |
|
2116 |
void |
2117 |
limit (aio_req grp, int limit) |
2118 |
CODE: |
2119 |
grp->int2 = limit; |
2120 |
aio_grp_feed (grp); |
2121 |
|
2122 |
void |
2123 |
feed (aio_req grp, SV *callback=&PL_sv_undef) |
2124 |
CODE: |
2125 |
{ |
2126 |
SvREFCNT_dec (grp->sv2); |
2127 |
grp->sv2 = newSVsv (callback); |
2128 |
|
2129 |
if (grp->int2 <= 0) |
2130 |
grp->int2 = 2; |
2131 |
|
2132 |
aio_grp_feed (grp); |
2133 |
} |
2134 |
|