| 1 |
#include "libeio/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 |
/* perl namespace pollution */ |
| 19 |
#undef VERSION |
| 20 |
|
| 21 |
#ifdef _WIN32 |
| 22 |
|
| 23 |
# define EIO_STRUCT_DIRENT Direntry_t |
| 24 |
# undef malloc |
| 25 |
# undef free |
| 26 |
|
| 27 |
// perl overrides all those nice win32 functions |
| 28 |
# undef open |
| 29 |
# undef read |
| 30 |
# undef write |
| 31 |
# undef send |
| 32 |
# undef recv |
| 33 |
# undef stat |
| 34 |
# undef fstat |
| 35 |
# define lstat stat |
| 36 |
# undef truncate |
| 37 |
# undef ftruncate |
| 38 |
# undef open |
| 39 |
# undef close |
| 40 |
# undef unlink |
| 41 |
# undef rmdir |
| 42 |
# undef rename |
| 43 |
# undef lseek |
| 44 |
|
| 45 |
# define chown(a,b,c) (errno = ENOSYS, -1) |
| 46 |
# define fchown(a,b,c) (errno = ENOSYS, -1) |
| 47 |
# define fchmod(a,b) (errno = ENOSYS, -1) |
| 48 |
# define symlink(a,b) (errno = ENOSYS, -1) |
| 49 |
# define readlink(a,b,c) (errno = ENOSYS, -1) |
| 50 |
# define mknod(a,b,c) (errno = ENOSYS, -1) |
| 51 |
# define truncate(a,b) (errno = ENOSYS, -1) |
| 52 |
# define ftruncate(fd,o) chsize ((fd), (o)) |
| 53 |
# define fsync(fd) _commit (fd) |
| 54 |
# define opendir(fd) (errno = ENOSYS, 0) |
| 55 |
# define readdir(fd) (errno = ENOSYS, -1) |
| 56 |
# define closedir(fd) (errno = ENOSYS, -1) |
| 57 |
# define mkdir(a,b) mkdir (a) |
| 58 |
|
| 59 |
#else |
| 60 |
|
| 61 |
# include <sys/time.h> |
| 62 |
# include <sys/select.h> |
| 63 |
# include <unistd.h> |
| 64 |
# include <utime.h> |
| 65 |
# include <signal.h> |
| 66 |
# define EIO_STRUCT_DIRENT struct dirent |
| 67 |
|
| 68 |
#endif |
| 69 |
|
| 70 |
/* perl stupidly overrides readdir and maybe others */ |
| 71 |
/* with thread-unsafe versions, imagine that :( */ |
| 72 |
#undef readdir |
| 73 |
#undef opendir |
| 74 |
#undef closedir |
| 75 |
|
| 76 |
#define EIO_STRUCT_STAT Stat_t |
| 77 |
|
| 78 |
/* use NV for 32 bit perls as it allows larger offsets */ |
| 79 |
#if IVSIZE >= 8 |
| 80 |
# define SvVAL64 SvIV |
| 81 |
#else |
| 82 |
# define SvVAL64 SvNV |
| 83 |
#endif |
| 84 |
|
| 85 |
/*****************************************************************************/ |
| 86 |
|
| 87 |
#if __GNUC__ >= 3 |
| 88 |
# define expect(expr,value) __builtin_expect ((expr),(value)) |
| 89 |
#else |
| 90 |
# define expect(expr,value) (expr) |
| 91 |
#endif |
| 92 |
|
| 93 |
#define expect_false(expr) expect ((expr) != 0, 0) |
| 94 |
#define expect_true(expr) expect ((expr) != 0, 1) |
| 95 |
|
| 96 |
/*****************************************************************************/ |
| 97 |
|
| 98 |
static HV *stash; |
| 99 |
typedef SV SV8; /* byte-sv, used for argument-checking */ |
| 100 |
|
| 101 |
#define AIO_REQ_KLASS "IO::AIO::REQ" |
| 102 |
#define AIO_GRP_KLASS "IO::AIO::GRP" |
| 103 |
|
| 104 |
#define EIO_REQ_MEMBERS \ |
| 105 |
SV *callback; \ |
| 106 |
SV *sv1, *sv2; \ |
| 107 |
STRLEN stroffset; \ |
| 108 |
SV *self; |
| 109 |
|
| 110 |
#define EIO_NO_WRAPPERS 1 |
| 111 |
|
| 112 |
#include "libeio/eio.h" |
| 113 |
|
| 114 |
static int req_invoke (eio_req *req); |
| 115 |
#define EIO_FINISH(req) req_invoke (req) |
| 116 |
static void req_destroy (eio_req *grp); |
| 117 |
#define EIO_DESTROY(req) req_destroy (req) |
| 118 |
|
| 119 |
enum { |
| 120 |
FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */ |
| 121 |
}; |
| 122 |
|
| 123 |
#include "libeio/eio.c" |
| 124 |
|
| 125 |
typedef eio_req *aio_req; |
| 126 |
typedef eio_req *aio_req_ornot; |
| 127 |
|
| 128 |
static SV *on_next_submit; |
| 129 |
static int next_pri = EIO_PRI_DEFAULT; |
| 130 |
static int max_outstanding; |
| 131 |
|
| 132 |
static int respipe_osf [2], respipe [2] = { -1, -1 }; |
| 133 |
|
| 134 |
static void req_destroy (aio_req req); |
| 135 |
static void req_cancel (aio_req req); |
| 136 |
|
| 137 |
static void want_poll (void) |
| 138 |
{ |
| 139 |
/* write a dummy byte to the pipe so fh becomes ready */ |
| 140 |
respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1); |
| 141 |
} |
| 142 |
|
| 143 |
static void done_poll (void) |
| 144 |
{ |
| 145 |
/* read any signals sent by the worker threads */ |
| 146 |
char buf [4]; |
| 147 |
while (respipe_read (respipe [0], buf, 4) == 4) |
| 148 |
; |
| 149 |
} |
| 150 |
|
| 151 |
/* must be called at most once */ |
| 152 |
static SV *req_sv (aio_req req, const char *klass) |
| 153 |
{ |
| 154 |
if (!req->self) |
| 155 |
{ |
| 156 |
req->self = (SV *)newHV (); |
| 157 |
sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
| 158 |
} |
| 159 |
|
| 160 |
return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
| 161 |
} |
| 162 |
|
| 163 |
static aio_req SvAIO_REQ (SV *sv) |
| 164 |
{ |
| 165 |
MAGIC *mg; |
| 166 |
|
| 167 |
if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
| 168 |
croak ("object of class " AIO_REQ_KLASS " expected"); |
| 169 |
|
| 170 |
mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
| 171 |
|
| 172 |
return mg ? (aio_req)mg->mg_ptr : 0; |
| 173 |
} |
| 174 |
|
| 175 |
static void aio_grp_feed (aio_req grp) |
| 176 |
{ |
| 177 |
if (grp->sv2 && SvOK (grp->sv2)) |
| 178 |
{ |
| 179 |
dSP; |
| 180 |
|
| 181 |
ENTER; |
| 182 |
SAVETMPS; |
| 183 |
PUSHMARK (SP); |
| 184 |
XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
| 185 |
PUTBACK; |
| 186 |
call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); |
| 187 |
SPAGAIN; |
| 188 |
FREETMPS; |
| 189 |
LEAVE; |
| 190 |
} |
| 191 |
} |
| 192 |
|
| 193 |
static void req_submit (eio_req *req) |
| 194 |
{ |
| 195 |
eio_submit (req); |
| 196 |
|
| 197 |
if (expect_false (on_next_submit)) |
| 198 |
{ |
| 199 |
dSP; |
| 200 |
SV *cb = sv_2mortal (on_next_submit); |
| 201 |
|
| 202 |
on_next_submit = 0; |
| 203 |
|
| 204 |
PUSHMARK (SP); |
| 205 |
PUTBACK; |
| 206 |
call_sv (cb, G_DISCARD | G_EVAL); |
| 207 |
} |
| 208 |
} |
| 209 |
|
| 210 |
static int req_invoke (eio_req *req) |
| 211 |
{ |
| 212 |
dSP; |
| 213 |
|
| 214 |
if (req->flags & FLAG_SV2_RO_OFF) |
| 215 |
SvREADONLY_off (req->sv2); |
| 216 |
|
| 217 |
if (!EIO_CANCELLED (req) && req->callback) |
| 218 |
{ |
| 219 |
ENTER; |
| 220 |
SAVETMPS; |
| 221 |
PUSHMARK (SP); |
| 222 |
EXTEND (SP, 1); |
| 223 |
|
| 224 |
switch (req->type) |
| 225 |
{ |
| 226 |
case EIO_READDIR: |
| 227 |
{ |
| 228 |
SV *rv = &PL_sv_undef; |
| 229 |
|
| 230 |
if (req->result >= 0) |
| 231 |
{ |
| 232 |
int i; |
| 233 |
char *buf = req->ptr2; |
| 234 |
AV *av = newAV (); |
| 235 |
|
| 236 |
av_extend (av, req->result - 1); |
| 237 |
|
| 238 |
for (i = 0; i < req->result; ++i) |
| 239 |
{ |
| 240 |
SV *sv = newSVpv (buf, 0); |
| 241 |
|
| 242 |
av_store (av, i, sv); |
| 243 |
buf += SvCUR (sv) + 1; |
| 244 |
} |
| 245 |
|
| 246 |
rv = sv_2mortal (newRV_noinc ((SV *)av)); |
| 247 |
} |
| 248 |
|
| 249 |
PUSHs (rv); |
| 250 |
} |
| 251 |
break; |
| 252 |
|
| 253 |
case EIO_OPEN: |
| 254 |
{ |
| 255 |
/* convert fd to fh */ |
| 256 |
SV *fh = &PL_sv_undef; |
| 257 |
|
| 258 |
if (req->result >= 0) |
| 259 |
{ |
| 260 |
GV *gv = (GV *)sv_newmortal (); |
| 261 |
int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR); |
| 262 |
char sym [64]; |
| 263 |
int symlen; |
| 264 |
|
| 265 |
symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result); |
| 266 |
gv_init (gv, stash, sym, symlen, 0); |
| 267 |
|
| 268 |
symlen = snprintf ( |
| 269 |
sym, |
| 270 |
sizeof (sym), |
| 271 |
"%s&=%d", |
| 272 |
flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<", |
| 273 |
req->result |
| 274 |
); |
| 275 |
|
| 276 |
if (do_open (gv, sym, symlen, 0, 0, 0, 0)) |
| 277 |
fh = (SV *)gv; |
| 278 |
} |
| 279 |
|
| 280 |
PUSHs (fh); |
| 281 |
} |
| 282 |
break; |
| 283 |
|
| 284 |
case EIO_GROUP: |
| 285 |
req->int1 = 2; /* mark group as finished */ |
| 286 |
|
| 287 |
if (req->sv1) |
| 288 |
{ |
| 289 |
int i; |
| 290 |
AV *av = (AV *)req->sv1; |
| 291 |
|
| 292 |
EXTEND (SP, AvFILL (av) + 1); |
| 293 |
for (i = 0; i <= AvFILL (av); ++i) |
| 294 |
PUSHs (*av_fetch (av, i, 0)); |
| 295 |
} |
| 296 |
break; |
| 297 |
|
| 298 |
case EIO_NOP: |
| 299 |
case EIO_BUSY: |
| 300 |
break; |
| 301 |
|
| 302 |
case EIO_READLINK: |
| 303 |
if (req->result > 0) |
| 304 |
PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result))); |
| 305 |
break; |
| 306 |
|
| 307 |
case EIO_STAT: |
| 308 |
case EIO_LSTAT: |
| 309 |
case EIO_FSTAT: |
| 310 |
PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT; |
| 311 |
PL_laststatval = req->result; |
| 312 |
PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2); |
| 313 |
PUSHs (sv_2mortal (newSViv (req->result))); |
| 314 |
break; |
| 315 |
|
| 316 |
case EIO_READ: |
| 317 |
SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0)); |
| 318 |
*SvEND (req->sv2) = 0; |
| 319 |
PUSHs (sv_2mortal (newSViv (req->result))); |
| 320 |
break; |
| 321 |
|
| 322 |
case EIO_DUP2: |
| 323 |
if (req->result > 0) |
| 324 |
req->result = 0; |
| 325 |
/* FALLTHROUGH */ |
| 326 |
|
| 327 |
default: |
| 328 |
PUSHs (sv_2mortal (newSViv (req->result))); |
| 329 |
break; |
| 330 |
} |
| 331 |
|
| 332 |
errno = req->errorno; |
| 333 |
|
| 334 |
PUTBACK; |
| 335 |
call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD); |
| 336 |
SPAGAIN; |
| 337 |
|
| 338 |
FREETMPS; |
| 339 |
LEAVE; |
| 340 |
|
| 341 |
PUTBACK; |
| 342 |
} |
| 343 |
|
| 344 |
return !!SvTRUE (ERRSV); |
| 345 |
} |
| 346 |
|
| 347 |
static void req_destroy (aio_req req) |
| 348 |
{ |
| 349 |
if (req->self) |
| 350 |
{ |
| 351 |
sv_unmagic (req->self, PERL_MAGIC_ext); |
| 352 |
SvREFCNT_dec (req->self); |
| 353 |
} |
| 354 |
|
| 355 |
SvREFCNT_dec (req->sv1); |
| 356 |
SvREFCNT_dec (req->sv2); |
| 357 |
SvREFCNT_dec (req->callback); |
| 358 |
|
| 359 |
Safefree (req); |
| 360 |
} |
| 361 |
|
| 362 |
static void req_cancel_subs (aio_req grp) |
| 363 |
{ |
| 364 |
aio_req sub; |
| 365 |
|
| 366 |
if (grp->type != EIO_GROUP) |
| 367 |
return; |
| 368 |
|
| 369 |
SvREFCNT_dec (grp->sv2); |
| 370 |
grp->sv2 = 0; |
| 371 |
|
| 372 |
eio_grp_cancel (grp); |
| 373 |
} |
| 374 |
|
| 375 |
#ifdef USE_SOCKETS_AS_HANDLES |
| 376 |
# define TO_SOCKET(x) (win32_get_osfhandle (x)) |
| 377 |
#else |
| 378 |
# define TO_SOCKET(x) (x) |
| 379 |
#endif |
| 380 |
|
| 381 |
static void |
| 382 |
create_respipe (void) |
| 383 |
{ |
| 384 |
int old_readfd = respipe [0]; |
| 385 |
|
| 386 |
if (respipe [1] >= 0) |
| 387 |
respipe_close (TO_SOCKET (respipe [1])); |
| 388 |
|
| 389 |
#ifdef _WIN32 |
| 390 |
if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe)) |
| 391 |
#else |
| 392 |
if (pipe (respipe)) |
| 393 |
#endif |
| 394 |
croak ("unable to initialize result pipe"); |
| 395 |
|
| 396 |
if (old_readfd >= 0) |
| 397 |
{ |
| 398 |
if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0) |
| 399 |
croak ("unable to initialize result pipe(2)"); |
| 400 |
|
| 401 |
respipe_close (respipe [0]); |
| 402 |
respipe [0] = old_readfd; |
| 403 |
} |
| 404 |
|
| 405 |
#ifdef _WIN32 |
| 406 |
int arg = 1; |
| 407 |
if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg) |
| 408 |
|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg)) |
| 409 |
#else |
| 410 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK) |
| 411 |
|| fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
| 412 |
#endif |
| 413 |
croak ("unable to initialize result pipe(3)"); |
| 414 |
|
| 415 |
respipe_osf [0] = TO_SOCKET (respipe [0]); |
| 416 |
respipe_osf [1] = TO_SOCKET (respipe [1]); |
| 417 |
} |
| 418 |
|
| 419 |
static void poll_wait (void) |
| 420 |
{ |
| 421 |
fd_set rfd; |
| 422 |
|
| 423 |
while (eio_nreqs ()) |
| 424 |
{ |
| 425 |
int size; |
| 426 |
|
| 427 |
X_LOCK (reslock); |
| 428 |
size = res_queue.size; |
| 429 |
X_UNLOCK (reslock); |
| 430 |
|
| 431 |
if (size) |
| 432 |
return; |
| 433 |
|
| 434 |
etp_maybe_start_thread (); |
| 435 |
|
| 436 |
FD_ZERO (&rfd); |
| 437 |
FD_SET (respipe [0], &rfd); |
| 438 |
|
| 439 |
PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0); |
| 440 |
} |
| 441 |
} |
| 442 |
|
| 443 |
static int poll_cb (void) |
| 444 |
{ |
| 445 |
for (;;) |
| 446 |
{ |
| 447 |
int res = eio_poll (); |
| 448 |
|
| 449 |
if (res > 0) |
| 450 |
croak (0); |
| 451 |
|
| 452 |
if (!max_outstanding || max_outstanding > eio_nreqs ()) |
| 453 |
return res; |
| 454 |
|
| 455 |
poll_wait (); |
| 456 |
} |
| 457 |
} |
| 458 |
|
| 459 |
static void atfork_child (void) |
| 460 |
{ |
| 461 |
create_respipe (); |
| 462 |
} |
| 463 |
|
| 464 |
static SV * |
| 465 |
get_cb (SV *cb_sv) |
| 466 |
{ |
| 467 |
HV *st; |
| 468 |
GV *gvp; |
| 469 |
CV *cv; |
| 470 |
|
| 471 |
if (!SvOK (cb_sv)) |
| 472 |
return 0; |
| 473 |
|
| 474 |
cv = sv_2cv (cb_sv, &st, &gvp, 0); |
| 475 |
|
| 476 |
if (!cv) |
| 477 |
croak ("IO::AIO callback must be undef or a CODE reference"); |
| 478 |
|
| 479 |
return (SV *)cv; |
| 480 |
} |
| 481 |
|
| 482 |
#define dREQ \ |
| 483 |
SV *cb_cv; \ |
| 484 |
aio_req req; \ |
| 485 |
int req_pri = next_pri; \ |
| 486 |
next_pri = EIO_PRI_DEFAULT; \ |
| 487 |
\ |
| 488 |
cb_cv = get_cb (callback); \ |
| 489 |
\ |
| 490 |
Newz (0, req, 1, eio_req); \ |
| 491 |
if (!req) \ |
| 492 |
croak ("out of memory during eio_req allocation"); \ |
| 493 |
\ |
| 494 |
req->callback = SvREFCNT_inc (cb_cv); \ |
| 495 |
req->pri = req_pri |
| 496 |
|
| 497 |
#define REQ_SEND \ |
| 498 |
PUTBACK; \ |
| 499 |
req_submit (req); \ |
| 500 |
SPAGAIN; \ |
| 501 |
\ |
| 502 |
if (GIMME_V != G_VOID) \ |
| 503 |
XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
| 504 |
|
| 505 |
static int |
| 506 |
extract_fd (SV *fh, int wr) |
| 507 |
{ |
| 508 |
int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh))); |
| 509 |
|
| 510 |
if (fd < 0) |
| 511 |
croak ("illegal fh argument, either not an OS file or read/write mode mismatch"); |
| 512 |
|
| 513 |
return fd; |
| 514 |
} |
| 515 |
|
| 516 |
MODULE = IO::AIO PACKAGE = IO::AIO |
| 517 |
|
| 518 |
PROTOTYPES: ENABLE |
| 519 |
|
| 520 |
BOOT: |
| 521 |
{ |
| 522 |
stash = gv_stashpv ("IO::AIO", 1); |
| 523 |
|
| 524 |
newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
| 525 |
newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
| 526 |
newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
| 527 |
newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT)); |
| 528 |
newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC)); |
| 529 |
#ifndef _WIN32 |
| 530 |
newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO)); |
| 531 |
#endif |
| 532 |
newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO)); |
| 533 |
newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE)); |
| 534 |
newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE)); |
| 535 |
newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER)); |
| 536 |
|
| 537 |
create_respipe (); |
| 538 |
|
| 539 |
if (eio_init (want_poll, done_poll) < 0) |
| 540 |
croak ("IO::AIO: unable to initialise eio library"); |
| 541 |
|
| 542 |
/* atfork child called in fifo order, so before eio's handler */ |
| 543 |
X_THREAD_ATFORK (0, 0, atfork_child); |
| 544 |
} |
| 545 |
|
| 546 |
void |
| 547 |
max_poll_reqs (int nreqs) |
| 548 |
PROTOTYPE: $ |
| 549 |
CODE: |
| 550 |
eio_set_max_poll_reqs (nreqs); |
| 551 |
|
| 552 |
void |
| 553 |
max_poll_time (double nseconds) |
| 554 |
PROTOTYPE: $ |
| 555 |
CODE: |
| 556 |
eio_set_max_poll_time (nseconds); |
| 557 |
|
| 558 |
void |
| 559 |
min_parallel (int nthreads) |
| 560 |
PROTOTYPE: $ |
| 561 |
CODE: |
| 562 |
eio_set_min_parallel (nthreads); |
| 563 |
|
| 564 |
void |
| 565 |
max_parallel (int nthreads) |
| 566 |
PROTOTYPE: $ |
| 567 |
CODE: |
| 568 |
eio_set_max_parallel (nthreads); |
| 569 |
|
| 570 |
void |
| 571 |
max_idle (int nthreads) |
| 572 |
PROTOTYPE: $ |
| 573 |
CODE: |
| 574 |
eio_set_max_idle (nthreads); |
| 575 |
|
| 576 |
void |
| 577 |
max_outstanding (int maxreqs) |
| 578 |
PROTOTYPE: $ |
| 579 |
CODE: |
| 580 |
max_outstanding = maxreqs; |
| 581 |
|
| 582 |
void |
| 583 |
aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) |
| 584 |
PROTOTYPE: $$$;$ |
| 585 |
PPCODE: |
| 586 |
{ |
| 587 |
dREQ; |
| 588 |
|
| 589 |
req->type = EIO_OPEN; |
| 590 |
req->sv1 = newSVsv (pathname); |
| 591 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 592 |
req->int1 = flags; |
| 593 |
req->int2 = mode; |
| 594 |
|
| 595 |
REQ_SEND; |
| 596 |
} |
| 597 |
|
| 598 |
void |
| 599 |
aio_fsync (SV *fh, SV *callback=&PL_sv_undef) |
| 600 |
PROTOTYPE: $;$ |
| 601 |
ALIAS: |
| 602 |
aio_fsync = EIO_FSYNC |
| 603 |
aio_fdatasync = EIO_FDATASYNC |
| 604 |
PPCODE: |
| 605 |
{ |
| 606 |
int fd = extract_fd (fh, 0); |
| 607 |
dREQ; |
| 608 |
|
| 609 |
req->type = ix; |
| 610 |
req->sv1 = newSVsv (fh); |
| 611 |
req->int1 = fd; |
| 612 |
|
| 613 |
REQ_SEND (req); |
| 614 |
} |
| 615 |
|
| 616 |
void |
| 617 |
aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef) |
| 618 |
PROTOTYPE: $$$$;$ |
| 619 |
PPCODE: |
| 620 |
{ |
| 621 |
int fd = extract_fd (fh, 0); |
| 622 |
dREQ; |
| 623 |
|
| 624 |
req->type = EIO_SYNC_FILE_RANGE; |
| 625 |
req->sv1 = newSVsv (fh); |
| 626 |
req->int1 = fd; |
| 627 |
req->offs = SvVAL64 (offset); |
| 628 |
req->size = SvVAL64 (nbytes); |
| 629 |
req->int2 = flags; |
| 630 |
|
| 631 |
REQ_SEND (req); |
| 632 |
} |
| 633 |
|
| 634 |
void |
| 635 |
aio_close (SV *fh, SV *callback=&PL_sv_undef) |
| 636 |
PROTOTYPE: $;$ |
| 637 |
PPCODE: |
| 638 |
{ |
| 639 |
static int close_pipe = -1; /* dummy fd to close fds via dup2 */ |
| 640 |
int fd = extract_fd (fh, 0); |
| 641 |
dREQ; |
| 642 |
|
| 643 |
if (close_pipe < 0) |
| 644 |
{ |
| 645 |
int pipefd [2]; |
| 646 |
|
| 647 |
if (pipe (pipefd) < 0 |
| 648 |
|| close (pipefd [1]) < 0 |
| 649 |
|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0) |
| 650 |
abort (); /*D*/ |
| 651 |
|
| 652 |
close_pipe = pipefd [0]; |
| 653 |
} |
| 654 |
|
| 655 |
req->type = EIO_DUP2; |
| 656 |
req->int1 = close_pipe; |
| 657 |
req->sv2 = newSVsv (fh); |
| 658 |
req->int2 = fd; |
| 659 |
|
| 660 |
REQ_SEND (req); |
| 661 |
} |
| 662 |
|
| 663 |
void |
| 664 |
aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) |
| 665 |
ALIAS: |
| 666 |
aio_read = EIO_READ |
| 667 |
aio_write = EIO_WRITE |
| 668 |
PROTOTYPE: $$$$$;$ |
| 669 |
PPCODE: |
| 670 |
{ |
| 671 |
STRLEN svlen; |
| 672 |
char *svptr = SvPVbyte (data, svlen); |
| 673 |
UV len = SvUV (length); |
| 674 |
int fd; |
| 675 |
|
| 676 |
if (SvTYPE (data) > SVt_PVMG) |
| 677 |
croak ("illegal data argument '%s', must be plain scalar string", SvPV_nolen (data)); |
| 678 |
|
| 679 |
SvUPGRADE (data, SVt_PV); |
| 680 |
SvPOK_only (data); |
| 681 |
|
| 682 |
if (dataoffset < 0) |
| 683 |
dataoffset += svlen; |
| 684 |
|
| 685 |
if (dataoffset < 0 || dataoffset > svlen) |
| 686 |
croak ("dataoffset outside of data scalar"); |
| 687 |
|
| 688 |
if (ix == EIO_WRITE) |
| 689 |
{ |
| 690 |
/* write: check length and adjust. */ |
| 691 |
if (!SvOK (length) || len + dataoffset > svlen) |
| 692 |
len = svlen - dataoffset; |
| 693 |
} |
| 694 |
else |
| 695 |
{ |
| 696 |
/* read: grow scalar as necessary */ |
| 697 |
svptr = SvGROW (data, len + dataoffset + 1); |
| 698 |
} |
| 699 |
|
| 700 |
if (len < 0) |
| 701 |
croak ("length must not be negative"); |
| 702 |
|
| 703 |
fd = extract_fd (fh, ix == EIO_WRITE); |
| 704 |
|
| 705 |
{ |
| 706 |
dREQ; |
| 707 |
|
| 708 |
req->type = ix; |
| 709 |
req->sv1 = newSVsv (fh); |
| 710 |
req->int1 = fd; |
| 711 |
req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
| 712 |
req->size = len; |
| 713 |
req->sv2 = SvREFCNT_inc (data); |
| 714 |
req->ptr2 = (char *)svptr + dataoffset; |
| 715 |
req->stroffset = dataoffset; |
| 716 |
|
| 717 |
if (!SvREADONLY (data)) |
| 718 |
{ |
| 719 |
SvREADONLY_on (data); |
| 720 |
req->flags |= FLAG_SV2_RO_OFF; |
| 721 |
} |
| 722 |
|
| 723 |
REQ_SEND; |
| 724 |
} |
| 725 |
} |
| 726 |
|
| 727 |
void |
| 728 |
aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) |
| 729 |
PROTOTYPE: $$;$ |
| 730 |
PPCODE: |
| 731 |
{ |
| 732 |
SV *data; |
| 733 |
dREQ; |
| 734 |
|
| 735 |
req->type = EIO_READLINK; |
| 736 |
req->sv1 = newSVsv (path); |
| 737 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 738 |
|
| 739 |
REQ_SEND; |
| 740 |
} |
| 741 |
|
| 742 |
void |
| 743 |
aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) |
| 744 |
PROTOTYPE: $$$$;$ |
| 745 |
PPCODE: |
| 746 |
{ |
| 747 |
int ifd = extract_fd (in_fh , 0); |
| 748 |
int ofd = extract_fd (out_fh, 0); |
| 749 |
dREQ; |
| 750 |
|
| 751 |
req->type = EIO_SENDFILE; |
| 752 |
req->sv1 = newSVsv (out_fh); |
| 753 |
req->int1 = ofd; |
| 754 |
req->sv2 = newSVsv (in_fh); |
| 755 |
req->int2 = ifd; |
| 756 |
req->offs = SvVAL64 (in_offset); |
| 757 |
req->size = length; |
| 758 |
|
| 759 |
REQ_SEND; |
| 760 |
} |
| 761 |
|
| 762 |
void |
| 763 |
aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) |
| 764 |
PROTOTYPE: $$$;$ |
| 765 |
PPCODE: |
| 766 |
{ |
| 767 |
int fd = extract_fd (fh, 0); |
| 768 |
dREQ; |
| 769 |
|
| 770 |
req->type = EIO_READAHEAD; |
| 771 |
req->sv1 = newSVsv (fh); |
| 772 |
req->int1 = fd; |
| 773 |
req->offs = SvVAL64 (offset); |
| 774 |
req->size = length; |
| 775 |
|
| 776 |
REQ_SEND; |
| 777 |
} |
| 778 |
|
| 779 |
void |
| 780 |
aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) |
| 781 |
ALIAS: |
| 782 |
aio_stat = EIO_STAT |
| 783 |
aio_lstat = EIO_LSTAT |
| 784 |
PPCODE: |
| 785 |
{ |
| 786 |
dREQ; |
| 787 |
|
| 788 |
req->sv1 = newSVsv (fh_or_path); |
| 789 |
|
| 790 |
if (SvPOK (req->sv1)) |
| 791 |
{ |
| 792 |
req->type = ix; |
| 793 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 794 |
} |
| 795 |
else |
| 796 |
{ |
| 797 |
req->type = EIO_FSTAT; |
| 798 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
| 799 |
} |
| 800 |
|
| 801 |
REQ_SEND; |
| 802 |
} |
| 803 |
|
| 804 |
void |
| 805 |
aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) |
| 806 |
PPCODE: |
| 807 |
{ |
| 808 |
dREQ; |
| 809 |
|
| 810 |
req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; |
| 811 |
req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; |
| 812 |
req->sv1 = newSVsv (fh_or_path); |
| 813 |
|
| 814 |
if (SvPOK (req->sv1)) |
| 815 |
{ |
| 816 |
req->type = EIO_UTIME; |
| 817 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 818 |
} |
| 819 |
else |
| 820 |
{ |
| 821 |
req->type = EIO_FUTIME; |
| 822 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
| 823 |
} |
| 824 |
|
| 825 |
REQ_SEND; |
| 826 |
} |
| 827 |
|
| 828 |
void |
| 829 |
aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) |
| 830 |
PPCODE: |
| 831 |
{ |
| 832 |
dREQ; |
| 833 |
|
| 834 |
req->sv1 = newSVsv (fh_or_path); |
| 835 |
req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; |
| 836 |
|
| 837 |
if (SvPOK (req->sv1)) |
| 838 |
{ |
| 839 |
req->type = EIO_TRUNCATE; |
| 840 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 841 |
} |
| 842 |
else |
| 843 |
{ |
| 844 |
req->type = EIO_FTRUNCATE; |
| 845 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
| 846 |
} |
| 847 |
|
| 848 |
REQ_SEND; |
| 849 |
} |
| 850 |
|
| 851 |
void |
| 852 |
aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) |
| 853 |
ALIAS: |
| 854 |
aio_chmod = EIO_CHMOD |
| 855 |
aio_mkdir = EIO_MKDIR |
| 856 |
PPCODE: |
| 857 |
{ |
| 858 |
dREQ; |
| 859 |
|
| 860 |
req->int2 = mode; |
| 861 |
req->sv1 = newSVsv (fh_or_path); |
| 862 |
|
| 863 |
if (SvPOK (req->sv1)) |
| 864 |
{ |
| 865 |
req->type = ix; |
| 866 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 867 |
} |
| 868 |
else |
| 869 |
{ |
| 870 |
req->type = EIO_FCHMOD; |
| 871 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
| 872 |
} |
| 873 |
|
| 874 |
REQ_SEND; |
| 875 |
} |
| 876 |
|
| 877 |
void |
| 878 |
aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) |
| 879 |
PPCODE: |
| 880 |
{ |
| 881 |
dREQ; |
| 882 |
|
| 883 |
req->int2 = SvOK (uid) ? SvIV (uid) : -1; |
| 884 |
req->int3 = SvOK (gid) ? SvIV (gid) : -1; |
| 885 |
req->sv1 = newSVsv (fh_or_path); |
| 886 |
|
| 887 |
if (SvPOK (req->sv1)) |
| 888 |
{ |
| 889 |
req->type = EIO_CHOWN; |
| 890 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 891 |
} |
| 892 |
else |
| 893 |
{ |
| 894 |
req->type = EIO_FCHOWN; |
| 895 |
req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
| 896 |
} |
| 897 |
|
| 898 |
REQ_SEND; |
| 899 |
} |
| 900 |
|
| 901 |
void |
| 902 |
aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) |
| 903 |
ALIAS: |
| 904 |
aio_unlink = EIO_UNLINK |
| 905 |
aio_rmdir = EIO_RMDIR |
| 906 |
aio_readdir = EIO_READDIR |
| 907 |
PPCODE: |
| 908 |
{ |
| 909 |
dREQ; |
| 910 |
|
| 911 |
req->type = ix; |
| 912 |
req->sv1 = newSVsv (pathname); |
| 913 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 914 |
|
| 915 |
REQ_SEND; |
| 916 |
} |
| 917 |
|
| 918 |
void |
| 919 |
aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef) |
| 920 |
ALIAS: |
| 921 |
aio_link = EIO_LINK |
| 922 |
aio_symlink = EIO_SYMLINK |
| 923 |
aio_rename = EIO_RENAME |
| 924 |
PPCODE: |
| 925 |
{ |
| 926 |
dREQ; |
| 927 |
|
| 928 |
req->type = ix; |
| 929 |
req->sv1 = newSVsv (oldpath); |
| 930 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 931 |
req->sv2 = newSVsv (newpath); |
| 932 |
req->ptr2 = SvPVbyte_nolen (req->sv2); |
| 933 |
|
| 934 |
REQ_SEND; |
| 935 |
} |
| 936 |
|
| 937 |
void |
| 938 |
aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) |
| 939 |
PPCODE: |
| 940 |
{ |
| 941 |
dREQ; |
| 942 |
|
| 943 |
req->type = EIO_MKNOD; |
| 944 |
req->sv1 = newSVsv (pathname); |
| 945 |
req->ptr1 = SvPVbyte_nolen (req->sv1); |
| 946 |
req->int2 = (mode_t)mode; |
| 947 |
req->offs = dev; |
| 948 |
|
| 949 |
REQ_SEND; |
| 950 |
} |
| 951 |
|
| 952 |
void |
| 953 |
aio_busy (double delay, SV *callback=&PL_sv_undef) |
| 954 |
PPCODE: |
| 955 |
{ |
| 956 |
dREQ; |
| 957 |
|
| 958 |
req->type = EIO_BUSY; |
| 959 |
req->nv1 = delay < 0. ? 0. : delay; |
| 960 |
|
| 961 |
REQ_SEND; |
| 962 |
} |
| 963 |
|
| 964 |
void |
| 965 |
aio_group (SV *callback=&PL_sv_undef) |
| 966 |
PROTOTYPE: ;$ |
| 967 |
PPCODE: |
| 968 |
{ |
| 969 |
dREQ; |
| 970 |
|
| 971 |
req->type = EIO_GROUP; |
| 972 |
|
| 973 |
req_submit (req); |
| 974 |
XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
| 975 |
} |
| 976 |
|
| 977 |
void |
| 978 |
aio_nop (SV *callback=&PL_sv_undef) |
| 979 |
ALIAS: |
| 980 |
aio_nop = EIO_NOP |
| 981 |
aio_sync = EIO_SYNC |
| 982 |
PPCODE: |
| 983 |
{ |
| 984 |
dREQ; |
| 985 |
|
| 986 |
req->type = ix; |
| 987 |
|
| 988 |
REQ_SEND; |
| 989 |
} |
| 990 |
|
| 991 |
int |
| 992 |
aioreq_pri (int pri = 0) |
| 993 |
PROTOTYPE: ;$ |
| 994 |
CODE: |
| 995 |
RETVAL = next_pri; |
| 996 |
if (items > 0) |
| 997 |
{ |
| 998 |
if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN; |
| 999 |
if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX; |
| 1000 |
next_pri = pri; |
| 1001 |
} |
| 1002 |
OUTPUT: |
| 1003 |
RETVAL |
| 1004 |
|
| 1005 |
void |
| 1006 |
aioreq_nice (int nice = 0) |
| 1007 |
CODE: |
| 1008 |
nice = next_pri - nice; |
| 1009 |
if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN; |
| 1010 |
if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX; |
| 1011 |
next_pri = nice; |
| 1012 |
|
| 1013 |
void |
| 1014 |
flush () |
| 1015 |
PROTOTYPE: |
| 1016 |
CODE: |
| 1017 |
while (eio_nreqs ()) |
| 1018 |
{ |
| 1019 |
poll_wait (); |
| 1020 |
poll_cb (); |
| 1021 |
} |
| 1022 |
|
| 1023 |
int |
| 1024 |
poll() |
| 1025 |
PROTOTYPE: |
| 1026 |
CODE: |
| 1027 |
poll_wait (); |
| 1028 |
RETVAL = poll_cb (); |
| 1029 |
OUTPUT: |
| 1030 |
RETVAL |
| 1031 |
|
| 1032 |
int |
| 1033 |
poll_fileno() |
| 1034 |
PROTOTYPE: |
| 1035 |
CODE: |
| 1036 |
RETVAL = respipe [0]; |
| 1037 |
OUTPUT: |
| 1038 |
RETVAL |
| 1039 |
|
| 1040 |
int |
| 1041 |
poll_cb(...) |
| 1042 |
PROTOTYPE: |
| 1043 |
CODE: |
| 1044 |
RETVAL = poll_cb (); |
| 1045 |
OUTPUT: |
| 1046 |
RETVAL |
| 1047 |
|
| 1048 |
void |
| 1049 |
poll_wait() |
| 1050 |
PROTOTYPE: |
| 1051 |
CODE: |
| 1052 |
poll_wait (); |
| 1053 |
|
| 1054 |
int |
| 1055 |
nreqs() |
| 1056 |
PROTOTYPE: |
| 1057 |
CODE: |
| 1058 |
RETVAL = eio_nreqs (); |
| 1059 |
OUTPUT: |
| 1060 |
RETVAL |
| 1061 |
|
| 1062 |
int |
| 1063 |
nready() |
| 1064 |
PROTOTYPE: |
| 1065 |
CODE: |
| 1066 |
RETVAL = eio_nready (); |
| 1067 |
OUTPUT: |
| 1068 |
RETVAL |
| 1069 |
|
| 1070 |
int |
| 1071 |
npending() |
| 1072 |
PROTOTYPE: |
| 1073 |
CODE: |
| 1074 |
RETVAL = eio_npending (); |
| 1075 |
OUTPUT: |
| 1076 |
RETVAL |
| 1077 |
|
| 1078 |
int |
| 1079 |
nthreads() |
| 1080 |
PROTOTYPE: |
| 1081 |
CODE: |
| 1082 |
RETVAL = eio_nthreads (); |
| 1083 |
OUTPUT: |
| 1084 |
RETVAL |
| 1085 |
|
| 1086 |
void _on_next_submit (SV *cb) |
| 1087 |
CODE: |
| 1088 |
SvREFCNT_dec (on_next_submit); |
| 1089 |
on_next_submit = SvOK (cb) ? newSVsv (cb) : 0; |
| 1090 |
|
| 1091 |
PROTOTYPES: DISABLE |
| 1092 |
|
| 1093 |
MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
| 1094 |
|
| 1095 |
void |
| 1096 |
cancel (aio_req_ornot req) |
| 1097 |
CODE: |
| 1098 |
eio_cancel (req); |
| 1099 |
|
| 1100 |
void |
| 1101 |
cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
| 1102 |
PPCODE: |
| 1103 |
{ |
| 1104 |
if (GIMME_V != G_VOID) |
| 1105 |
XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef); |
| 1106 |
|
| 1107 |
if (items > 1) |
| 1108 |
{ |
| 1109 |
SV *cb_cv = get_cb (callback); |
| 1110 |
|
| 1111 |
SvREFCNT_dec (req->callback); |
| 1112 |
req->callback = SvREFCNT_inc (cb_cv); |
| 1113 |
} |
| 1114 |
} |
| 1115 |
|
| 1116 |
MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
| 1117 |
|
| 1118 |
void |
| 1119 |
add (aio_req grp, ...) |
| 1120 |
PPCODE: |
| 1121 |
{ |
| 1122 |
int i; |
| 1123 |
|
| 1124 |
if (grp->int1 == 2) |
| 1125 |
croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
| 1126 |
|
| 1127 |
for (i = 1; i < items; ++i ) |
| 1128 |
{ |
| 1129 |
aio_req req; |
| 1130 |
|
| 1131 |
if (GIMME_V != G_VOID) |
| 1132 |
XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
| 1133 |
|
| 1134 |
req = SvAIO_REQ (ST (i)); |
| 1135 |
|
| 1136 |
if (req) |
| 1137 |
eio_grp_add (grp, req); |
| 1138 |
} |
| 1139 |
} |
| 1140 |
|
| 1141 |
void |
| 1142 |
cancel_subs (aio_req_ornot req) |
| 1143 |
CODE: |
| 1144 |
req_cancel_subs (req); |
| 1145 |
|
| 1146 |
void |
| 1147 |
result (aio_req grp, ...) |
| 1148 |
CODE: |
| 1149 |
{ |
| 1150 |
int i; |
| 1151 |
AV *av; |
| 1152 |
|
| 1153 |
grp->errorno = errno; |
| 1154 |
|
| 1155 |
av = newAV (); |
| 1156 |
|
| 1157 |
for (i = 1; i < items; ++i ) |
| 1158 |
av_push (av, newSVsv (ST (i))); |
| 1159 |
|
| 1160 |
SvREFCNT_dec (grp->sv1); |
| 1161 |
grp->sv1 = (SV *)av; |
| 1162 |
} |
| 1163 |
|
| 1164 |
void |
| 1165 |
errno (aio_req grp, int errorno = errno) |
| 1166 |
CODE: |
| 1167 |
grp->errorno = errorno; |
| 1168 |
|
| 1169 |
void |
| 1170 |
limit (aio_req grp, int limit) |
| 1171 |
CODE: |
| 1172 |
eio_grp_limit (grp, limit); |
| 1173 |
|
| 1174 |
void |
| 1175 |
feed (aio_req grp, SV *callback=&PL_sv_undef) |
| 1176 |
CODE: |
| 1177 |
{ |
| 1178 |
SvREFCNT_dec (grp->sv2); |
| 1179 |
grp->sv2 = newSVsv (callback); |
| 1180 |
grp->feed = aio_grp_feed; |
| 1181 |
|
| 1182 |
if (grp->int2 <= 0) |
| 1183 |
grp->int2 = 2; |
| 1184 |
|
| 1185 |
eio_grp_limit (grp, grp->int2); |
| 1186 |
} |
| 1187 |
|
