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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.149 by root, Tue Jun 30 07:33:58 2009 UTC

1#if __linux 1#include "libeio/xthread.h"
2# define _GNU_SOURCE
3#endif
4
5#define _REENTRANT 1
6 2
7#include <errno.h> 3#include <errno.h>
8 4
9#include "EXTERN.h" 5#include "EXTERN.h"
10#include "perl.h" 6#include "perl.h"
11#include "XSUB.h" 7#include "XSUB.h"
12 8
13#include "autoconf/config.h"
14
15#include <pthread.h>
16
17#include <stddef.h> 9#include <stddef.h>
10#include <stdlib.h>
18#include <errno.h> 11#include <errno.h>
19#include <sys/time.h>
20#include <sys/select.h>
21#include <sys/types.h> 12#include <sys/types.h>
22#include <sys/stat.h> 13#include <sys/stat.h>
23#include <limits.h> 14#include <limits.h>
24#include <unistd.h>
25#include <fcntl.h> 15#include <fcntl.h>
26#include <signal.h>
27#include <sched.h> 16#include <sched.h>
28 17
29#if HAVE_SENDFILE 18/* perl namespace pollution */
30# if __linux 19#undef VERSION
31# include <sys/sendfile.h> 20
32# elif __freebsd 21#ifdef _WIN32
33# include <sys/socket.h> 22
34# include <sys/uio.h> 23# define EIO_STRUCT_DIRENT Direntry_t
35# elif __hpux 24# undef malloc
36# include <sys/socket.h> 25# undef free
37# elif __solaris /* not yet */ 26
38# include <sys/sendfile.h> 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
39# else 59#else
40# error sendfile support requested but not available 60
41# endif 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
42#endif 68#endif
43 69
44/* used for struct dirent, AIX doesn't provide it */ 70/* perl stupidly overrides readdir and maybe others */
45#ifndef NAME_MAX 71/* with thread-unsafe versions, imagine that :( */
46# define NAME_MAX 4096 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 VAL64 IV
81# define SvVAL64 SvIV
82# define newSVval64 newSViv
83#else
84# define VAL64 NV
85# define SvVAL64 SvNV
86# define newSVval64 newSVnv
47#endif 87#endif
48 88
49#if __ia64 89/*****************************************************************************/
50# define STACKSIZE 65536 90
91#if __GNUC__ >= 3
92# define expect(expr,value) __builtin_expect ((expr),(value))
51#else 93#else
52# define STACKSIZE 8192 94# define expect(expr,value) (expr)
53#endif 95#endif
54 96
55enum { 97#define expect_false(expr) expect ((expr) != 0, 0)
56 REQ_QUIT, 98#define expect_true(expr) expect ((expr) != 0, 1)
57 REQ_OPEN, REQ_CLOSE, 99
58 REQ_READ, REQ_WRITE, REQ_READAHEAD, 100/*****************************************************************************/
59 REQ_SENDFILE, 101
60 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 102static HV *stash;
61 REQ_FSYNC, REQ_FDATASYNC, 103typedef SV SV8; /* byte-sv, used for argument-checking */
62 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 104typedef int aio_rfd; /* read file desriptor */
63 REQ_READDIR, 105typedef int aio_wfd; /* write file descriptor */
64 REQ_LINK, REQ_SYMLINK,
65 REQ_GROUP, REQ_NOP,
66 REQ_SLEEP,
67};
68 106
69#define AIO_REQ_KLASS "IO::AIO::REQ" 107#define AIO_REQ_KLASS "IO::AIO::REQ"
70#define AIO_GRP_KLASS "IO::AIO::GRP" 108#define AIO_GRP_KLASS "IO::AIO::GRP"
71 109
72typedef struct aio_cb 110#define EIO_REQ_MEMBERS \
73{
74 struct aio_cb *volatile next;
75
76 SV *data, *callback; 111 SV *callback; \
77 SV *fh, *fh2; 112 SV *sv1, *sv2; \
78 void *dataptr, *data2ptr;
79 Stat_t *statdata;
80 off_t offset;
81 size_t length;
82 ssize_t result;
83
84 STRLEN dataoffset; 113 STRLEN stroffset; \
85 int type; 114 SV *self;
86 int fd, fd2;
87 int errorno;
88 mode_t mode; /* open */
89 115
90 unsigned char flags; 116#define EIO_NO_WRAPPERS 1
91 unsigned char pri;
92 117
93 SV *self; /* the perl counterpart of this request, if any */ 118#include "libeio/eio.h"
94 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 119
95} aio_cb; 120#ifndef POSIX_FADV_NORMAL
121# define POSIX_FADV_NORMAL 0
122# define NO_FADVISE 1
123#endif
124
125#ifndef POSIX_FADV_SEQUENTIAL
126# define POSIX_FADV_SEQUENTIAL 0
127#endif
128
129#ifndef POSIX_FADV_RANDOM
130# define POSIX_FADV_RANDOM 0
131#endif
132
133#ifndef POSIX_FADV_NOREUSE
134# define POSIX_FADV_NOREUSE 0
135#endif
136
137#ifndef POSIX_FADV_WILLNEED
138# define POSIX_FADV_WILLNEED 0
139#endif
140
141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0
143#endif
144
145static int req_invoke (eio_req *req);
146#define EIO_FINISH(req) req_invoke (req)
147static void req_destroy (eio_req *grp);
148#define EIO_DESTROY(req) req_destroy (req)
96 149
97enum { 150enum {
98 FLAG_CANCELLED = 0x01, 151 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99}; 152};
100 153
154#include "libeio/eio.c"
155
101typedef aio_cb *aio_req; 156typedef eio_req *aio_req;
102typedef aio_cb *aio_req_ornot; 157typedef eio_req *aio_req_ornot;
103 158
104enum { 159static SV *on_next_submit;
105 PRI_MIN = -4, 160static int next_pri = EIO_PRI_DEFAULT;
106 PRI_MAX = 4,
107
108 DEFAULT_PRI = 0,
109 PRI_BIAS = -PRI_MIN,
110};
111
112static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114static int started, wanted;
115static volatile int nreqs;
116static int max_outstanding = 1<<30; 161static int max_outstanding;
117static int respipe [2];
118 162
119#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 163static int respipe_osf [2], respipe [2] = { -1, -1 };
120# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121#else
122# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123#endif
124 164
125static pthread_mutex_t reslock = AIO_MUTEX_INIT; 165static void req_destroy (aio_req req);
126static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129static volatile aio_req reqs, reqe; /* queue start, queue end */
130static volatile aio_req ress, rese; /* queue start, queue end */
131
132static void req_invoke (aio_req req); 166static void req_cancel (aio_req req);
133static void req_free (aio_req req); 167
168static void want_poll (void)
169{
170 /* write a dummy byte to the pipe so fh becomes ready */
171 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
172}
173
174static void done_poll (void)
175{
176 /* read any signals sent by the worker threads */
177 char buf [4];
178 while (respipe_read (respipe [0], buf, 4) == 4)
179 ;
180}
134 181
135/* must be called at most once */ 182/* must be called at most once */
136static SV *req_sv (aio_req req, const char *klass) 183static SV *req_sv (aio_req req, const char *klass)
137{ 184{
138 if (!req->self) 185 if (!req->self)
156 return mg ? (aio_req)mg->mg_ptr : 0; 203 return mg ? (aio_req)mg->mg_ptr : 0;
157} 204}
158 205
159static void aio_grp_feed (aio_req grp) 206static void aio_grp_feed (aio_req grp)
160{ 207{
161 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 208 if (grp->sv2 && SvOK (grp->sv2))
162 { 209 {
163 int old_len = grp->length; 210 dSP;
164 211
165 if (grp->fh2 && SvOK (grp->fh2)) 212 ENTER;
213 SAVETMPS;
214 PUSHMARK (SP);
215 XPUSHs (req_sv (grp, AIO_GRP_KLASS));
216 PUTBACK;
217 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
218 SPAGAIN;
219 FREETMPS;
220 LEAVE;
221 }
222}
223
224static void req_submit (eio_req *req)
225{
226 eio_submit (req);
227
228 if (expect_false (on_next_submit))
229 {
230 dSP;
231 SV *cb = sv_2mortal (on_next_submit);
232
233 on_next_submit = 0;
234
235 PUSHMARK (SP);
236 PUTBACK;
237 call_sv (cb, G_DISCARD | G_EVAL);
238 }
239}
240
241static int req_invoke (eio_req *req)
242{
243 dSP;
244
245 if (req->flags & FLAG_SV2_RO_OFF)
246 SvREADONLY_off (req->sv2);
247
248 if (!EIO_CANCELLED (req) && req->callback)
249 {
250 ENTER;
251 SAVETMPS;
252 PUSHMARK (SP);
253 EXTEND (SP, 1);
254
255 switch (req->type)
166 { 256 {
167 dSP; 257 case EIO_READDIR:
258 {
259 SV *rv = &PL_sv_undef;
168 260
169 ENTER; 261 if (req->result >= 0)
170 SAVETMPS; 262 {
171 PUSHMARK (SP); 263 int i;
172 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 264 char *names = (char *)req->ptr2;
173 PUTBACK; 265 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
174 call_sv (grp->fh2, G_VOID | G_EVAL); 266 AV *av = newAV ();
175 SPAGAIN; 267
176 FREETMPS; 268 av_extend (av, req->result - 1);
177 LEAVE; 269
270 for (i = 0; i < req->result; ++i)
271 {
272 if (req->int1 & EIO_READDIR_DENTS)
273 {
274 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
275
276 if (req->int1 & EIO_READDIR_CUSTOM2)
277 {
278 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
279 AV *avent = newAV ();
280
281 av_extend (avent, 2);
282
283 if (!sv_type [ent->type])
284 {
285 sv_type [ent->type] = newSViv (ent->type);
286 SvREADONLY_on (sv_type [ent->type]);
287 }
288
289 av_store (avent, 0, namesv);
290 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
291 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
292
293 av_store (av, i, newRV_noinc ((SV *)avent));
294 }
295 else
296 av_store (av, i, namesv);
297
298 ++ent;
299 }
300 else
301 {
302 SV *name = newSVpv (names, 0);
303 av_store (av, i, name);
304 names += SvCUR (name) + 1;
305 }
306 }
307
308 rv = sv_2mortal (newRV_noinc ((SV *)av));
309 }
310
311 PUSHs (rv);
312
313 if (req->int1 & EIO_READDIR_CUSTOM1)
314 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
315 }
316 break;
317
318 case EIO_OPEN:
319 {
320 /* convert fd to fh */
321 SV *fh = &PL_sv_undef;
322
323 if (req->result >= 0)
324 {
325 GV *gv = (GV *)sv_newmortal ();
326 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
327 char sym [64];
328 int symlen;
329
330 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
331 gv_init (gv, stash, sym, symlen, 0);
332
333 symlen = snprintf (
334 sym,
335 sizeof (sym),
336 "%s&=%d",
337 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
338 (int)req->result
339 );
340
341 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
342 fh = (SV *)gv;
343 }
344
345 PUSHs (fh);
346 }
347 break;
348
349 case EIO_GROUP:
350 req->int1 = 2; /* mark group as finished */
351
352 if (req->sv1)
353 {
354 int i;
355 AV *av = (AV *)req->sv1;
356
357 EXTEND (SP, AvFILL (av) + 1);
358 for (i = 0; i <= AvFILL (av); ++i)
359 PUSHs (*av_fetch (av, i, 0));
360 }
361 break;
362
363 case EIO_NOP:
364 case EIO_BUSY:
365 break;
366
367 case EIO_READLINK:
368 if (req->result > 0)
369 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
370 break;
371
372 case EIO_STAT:
373 case EIO_LSTAT:
374 case EIO_FSTAT:
375 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
376 PL_laststatval = req->result;
377 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
378 PUSHs (sv_2mortal (newSViv (req->result)));
379 break;
380
381 case EIO_READ:
382 {
383 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
384 *SvEND (req->sv2) = 0;
385 SvPOK_only (req->sv2);
386 SvSETMAGIC (req->sv2);
387 PUSHs (sv_2mortal (newSViv (req->result)));
388 }
389 break;
390
391 case EIO_DUP2:
392 if (req->result > 0)
393 req->result = 0;
394 /* FALLTHROUGH */
395
396 default:
397 PUSHs (sv_2mortal (newSViv (req->result)));
398 break;
178 } 399 }
179 400
180 /* stop if no progress has been made */ 401 errno = req->errorno;
181 if (old_len == grp->length) 402
182 { 403 PUTBACK;
183 SvREFCNT_dec (grp->fh2); 404 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184 grp->fh2 = 0; 405 SPAGAIN;
185 break; 406
186 } 407 FREETMPS;
408 LEAVE;
409
410 PUTBACK;
187 } 411 }
188}
189 412
190static void aio_grp_dec (aio_req grp) 413 return !!SvTRUE (ERRSV);
191{
192 --grp->length;
193
194 /* call feeder, if applicable */
195 aio_grp_feed (grp);
196
197 /* finish, if done */
198 if (!grp->length && grp->fd)
199 {
200 req_invoke (grp);
201 req_free (grp);
202 }
203} 414}
204 415
205static void poll_wait ()
206{
207 fd_set rfd;
208
209 while (nreqs)
210 {
211 aio_req req;
212#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
213 pthread_mutex_lock (&reslock);
214#endif
215 req = ress;
216#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217 pthread_mutex_unlock (&reslock);
218#endif
219
220 if (req)
221 return;
222
223 FD_ZERO(&rfd);
224 FD_SET(respipe [0], &rfd);
225
226 select (respipe [0] + 1, &rfd, 0, 0, 0);
227 }
228}
229
230static void req_invoke (aio_req req)
231{
232 dSP;
233 int errorno = errno;
234
235 if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
236 return;
237
238 errno = req->errorno;
239
240 ENTER;
241 SAVETMPS;
242 PUSHMARK (SP);
243 EXTEND (SP, 1);
244
245 switch (req->type)
246 {
247 case REQ_READDIR:
248 {
249 SV *rv = &PL_sv_undef;
250
251 if (req->result >= 0)
252 {
253 char *buf = req->data2ptr;
254 AV *av = newAV ();
255
256 while (req->result)
257 {
258 SV *sv = newSVpv (buf, 0);
259
260 av_push (av, sv);
261 buf += SvCUR (sv) + 1;
262 req->result--;
263 }
264
265 rv = sv_2mortal (newRV_noinc ((SV *)av));
266 }
267
268 PUSHs (rv);
269 }
270 break;
271
272 case REQ_OPEN:
273 {
274 /* convert fd to fh */
275 SV *fh;
276
277 PUSHs (sv_2mortal (newSViv (req->result)));
278 PUTBACK;
279 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280 SPAGAIN;
281
282 fh = SvREFCNT_inc (POPs);
283
284 PUSHMARK (SP);
285 XPUSHs (sv_2mortal (fh));
286 }
287 break;
288
289 case REQ_GROUP:
290 req->fd = 2; /* mark group as finished */
291
292 if (req->data)
293 {
294 int i;
295 AV *av = (AV *)req->data;
296
297 EXTEND (SP, AvFILL (av) + 1);
298 for (i = 0; i <= AvFILL (av); ++i)
299 PUSHs (*av_fetch (av, i, 0));
300 }
301 break;
302
303 case REQ_NOP:
304 case REQ_SLEEP:
305 break;
306
307 default:
308 PUSHs (sv_2mortal (newSViv (req->result)));
309 break;
310 }
311
312
313 PUTBACK;
314 call_sv (req->callback, G_VOID | G_EVAL);
315 SPAGAIN;
316
317 FREETMPS;
318 LEAVE;
319
320 errno = errorno;
321
322 if (SvTRUE (ERRSV))
323 {
324 req_free (req);
325 croak (0);
326 }
327}
328
329static void req_free (aio_req req) 416static void req_destroy (aio_req req)
330{ 417{
331 if (req->grp)
332 {
333 aio_req grp = req->grp;
334
335 /* unlink request */
336 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
337 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
338
339 if (grp->grp_first == req)
340 grp->grp_first = req->grp_next;
341
342 aio_grp_dec (grp);
343 }
344
345 if (req->self) 418 if (req->self)
346 { 419 {
347 sv_unmagic (req->self, PERL_MAGIC_ext); 420 sv_unmagic (req->self, PERL_MAGIC_ext);
348 SvREFCNT_dec (req->self); 421 SvREFCNT_dec (req->self);
349 } 422 }
350 423
351 SvREFCNT_dec (req->data);
352 SvREFCNT_dec (req->fh); 424 SvREFCNT_dec (req->sv1);
353 SvREFCNT_dec (req->fh2); 425 SvREFCNT_dec (req->sv2);
354 SvREFCNT_dec (req->callback); 426 SvREFCNT_dec (req->callback);
355 Safefree (req->statdata);
356
357 if (req->type == REQ_READDIR && req->result >= 0)
358 free (req->data2ptr);
359 427
360 Safefree (req); 428 Safefree (req);
361} 429}
362 430
363static void req_cancel (aio_req req) 431static void req_cancel_subs (aio_req grp)
364{ 432{
365 req->flags |= FLAG_CANCELLED; 433 aio_req sub;
366 434
367 if (req->type == REQ_GROUP) 435 if (grp->type != EIO_GROUP)
436 return;
437
438 SvREFCNT_dec (grp->sv2);
439 grp->sv2 = 0;
440
441 eio_grp_cancel (grp);
442}
443
444#ifdef USE_SOCKETS_AS_HANDLES
445# define TO_SOCKET(x) (win32_get_osfhandle (x))
446#else
447# define TO_SOCKET(x) (x)
448#endif
449
450static void
451create_respipe (void)
452{
453 int old_readfd = respipe [0];
454
455 if (respipe [1] >= 0)
456 respipe_close (TO_SOCKET (respipe [1]));
457
458#ifdef _WIN32
459 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
460#else
461 if (pipe (respipe))
462#endif
463 croak ("unable to initialize result pipe");
464
465 if (old_readfd >= 0)
368 { 466 {
369 aio_req sub; 467 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
468 croak ("unable to initialize result pipe(2)");
370 469
371 for (sub = req->grp_first; sub; sub = sub->grp_next) 470 respipe_close (respipe [0]);
372 req_cancel (sub); 471 respipe [0] = old_readfd;
373 } 472 }
374}
375 473
474#ifdef _WIN32
475 int arg = 1;
476 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
477 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
478#else
479 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
480 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
481#endif
482 croak ("unable to initialize result pipe(3)");
483
484 respipe_osf [0] = TO_SOCKET (respipe [0]);
485 respipe_osf [1] = TO_SOCKET (respipe [1]);
486}
487
488static void poll_wait (void)
489{
490 fd_set rfd;
491
492 while (eio_nreqs ())
493 {
494 int size;
495
496 X_LOCK (reslock);
497 size = res_queue.size;
498 X_UNLOCK (reslock);
499
500 if (size)
501 return;
502
503 etp_maybe_start_thread ();
504
505 FD_ZERO (&rfd);
506 FD_SET (respipe [0], &rfd);
507
508 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
509 }
510}
511
376static int poll_cb () 512static int poll_cb (void)
377{ 513{
378 dSP;
379 int count = 0;
380 int do_croak = 0;
381 aio_req req;
382
383 for (;;) 514 for (;;)
384 { 515 {
385 pthread_mutex_lock (&reslock); 516 int res = eio_poll ();
386 req = ress;
387 517
388 if (req) 518 if (res > 0)
389 {
390 ress = req->next;
391
392 if (!ress)
393 {
394 /* read any signals sent by the worker threads */
395 char buf [32];
396 while (read (respipe [0], buf, 32) == 32)
397 ;
398
399 rese = 0;
400 }
401 }
402
403 pthread_mutex_unlock (&reslock);
404
405 if (!req)
406 break; 519 croak (0);
407 520
408 --nreqs; 521 if (!max_outstanding || max_outstanding > eio_nreqs ())
522 return res;
409 523
410 if (req->type == REQ_QUIT) 524 poll_wait ();
411 started--;
412 else if (req->type == REQ_GROUP && req->length)
413 {
414 req->fd = 1; /* mark request as delayed */
415 continue;
416 }
417 else
418 {
419 if (req->type == REQ_READ)
420 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
421
422 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
423 SvREADONLY_off (req->data);
424
425 if (req->statdata)
426 {
427 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
428 PL_laststatval = req->result;
429 PL_statcache = *(req->statdata);
430 }
431
432 req_invoke (req);
433
434 count++;
435 }
436
437 req_free (req);
438 } 525 }
439
440 return count;
441} 526}
442 527
443static void *aio_proc(void *arg);
444
445static void start_thread (void) 528static void atfork_child (void)
446{ 529{
447 sigset_t fullsigset, oldsigset; 530 create_respipe ();
448 pthread_t tid;
449 pthread_attr_t attr;
450
451 pthread_attr_init (&attr);
452 pthread_attr_setstacksize (&attr, STACKSIZE);
453 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
454
455 sigfillset (&fullsigset);
456 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
457
458 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
459 started++;
460
461 sigprocmask (SIG_SETMASK, &oldsigset, 0);
462} 531}
463 532
464static void req_send (aio_req req) 533static SV *
534get_cb (SV *cb_sv)
465{ 535{
466 while (started < wanted && nreqs >= started) 536 HV *st;
467 start_thread (); 537 GV *gvp;
538 CV *cv;
468 539
469 ++nreqs; 540 if (!SvOK (cb_sv))
470
471 pthread_mutex_lock (&reqlock);
472
473 req->next = 0;
474
475 if (reqe)
476 {
477 reqe->next = req;
478 reqe = req;
479 }
480 else
481 reqe = reqs = req;
482
483 pthread_cond_signal (&reqwait);
484 pthread_mutex_unlock (&reqlock);
485
486 if (nreqs > max_outstanding)
487 for (;;)
488 {
489 poll_cb ();
490
491 if (nreqs <= max_outstanding)
492 break;
493
494 poll_wait ();
495 }
496}
497
498static void end_thread (void)
499{
500 aio_req req;
501 Newz (0, req, 1, aio_cb);
502 req->type = REQ_QUIT;
503
504 req_send (req);
505}
506
507static void min_parallel (int nthreads)
508{
509 if (wanted < nthreads)
510 wanted = nthreads;
511}
512
513static void max_parallel (int nthreads)
514{
515 int cur = started;
516
517 if (wanted > nthreads)
518 wanted = nthreads;
519
520 while (cur > wanted)
521 {
522 end_thread ();
523 cur--;
524 }
525
526 while (started > wanted)
527 {
528 poll_wait ();
529 poll_cb ();
530 }
531}
532
533static void create_pipe ()
534{
535 if (pipe (respipe))
536 croak ("unable to initialize result pipe");
537
538 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
539 croak ("cannot set result pipe to nonblocking mode");
540
541 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
542 croak ("cannot set result pipe to nonblocking mode");
543}
544
545/*****************************************************************************/
546/* work around various missing functions */
547
548#if !HAVE_PREADWRITE
549# define pread aio_pread
550# define pwrite aio_pwrite
551
552/*
553 * make our pread/pwrite safe against themselves, but not against
554 * normal read/write by using a mutex. slows down execution a lot,
555 * but that's your problem, not mine.
556 */
557static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
558
559static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
560{
561 ssize_t res;
562 off_t ooffset;
563
564 pthread_mutex_lock (&preadwritelock);
565 ooffset = lseek (fd, 0, SEEK_CUR);
566 lseek (fd, offset, SEEK_SET);
567 res = read (fd, buf, count);
568 lseek (fd, ooffset, SEEK_SET);
569 pthread_mutex_unlock (&preadwritelock);
570
571 return res;
572}
573
574static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
575{
576 ssize_t res;
577 off_t ooffset;
578
579 pthread_mutex_lock (&preadwritelock);
580 ooffset = lseek (fd, 0, SEEK_CUR);
581 lseek (fd, offset, SEEK_SET);
582 res = write (fd, buf, count);
583 lseek (fd, offset, SEEK_SET);
584 pthread_mutex_unlock (&preadwritelock);
585
586 return res;
587}
588#endif
589
590#if !HAVE_FDATASYNC
591# define fdatasync fsync
592#endif
593
594#if !HAVE_READAHEAD
595# define readahead aio_readahead
596
597static ssize_t readahead (int fd, off_t offset, size_t count)
598{
599 char readahead_buf[4096];
600
601 while (count > 0)
602 {
603 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
604
605 pread (fd, readahead_buf, len, offset);
606 offset += len;
607 count -= len;
608 }
609
610 errno = 0;
611}
612#endif
613
614#if !HAVE_READDIR_R
615# define readdir_r aio_readdir_r
616
617static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
618
619static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
620{
621 struct dirent *e;
622 int errorno;
623
624 pthread_mutex_lock (&readdirlock);
625
626 e = readdir (dirp);
627 errorno = errno;
628
629 if (e)
630 {
631 *res = ent;
632 strcpy (ent->d_name, e->d_name);
633 }
634 else
635 *res = 0;
636
637 pthread_mutex_unlock (&readdirlock);
638
639 errno = errorno;
640 return e ? 0 : -1;
641}
642#endif
643
644/* sendfile always needs emulation */
645static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
646{
647 ssize_t res;
648
649 if (!count)
650 return 0; 541 return 0;
651 542
652#if HAVE_SENDFILE 543 cv = sv_2cv (cb_sv, &st, &gvp, 0);
653# if __linux
654 res = sendfile (ofd, ifd, &offset, count);
655 544
656# elif __freebsd 545 if (!cv)
657 /* 546 croak ("IO::AIO callback must be undef or a CODE reference");
658 * Of course, the freebsd sendfile is a dire hack with no thoughts
659 * wasted on making it similar to other I/O functions.
660 */
661 {
662 off_t sbytes;
663 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
664 547
665 if (res < 0 && sbytes) 548 return (SV *)cv;
666 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
667 res = sbytes;
668 }
669
670# elif __hpux
671 res = sendfile (ofd, ifd, offset, count, 0, 0);
672
673# elif __solaris
674 {
675 struct sendfilevec vec;
676 size_t sbytes;
677
678 vec.sfv_fd = ifd;
679 vec.sfv_flag = 0;
680 vec.sfv_off = offset;
681 vec.sfv_len = count;
682
683 res = sendfilev (ofd, &vec, 1, &sbytes);
684
685 if (res < 0 && sbytes)
686 res = sbytes;
687 }
688
689# endif
690#else
691 res = -1;
692 errno = ENOSYS;
693#endif
694
695 if (res < 0
696 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
697#if __solaris
698 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
699#endif
700 )
701 )
702 {
703 /* emulate sendfile. this is a major pain in the ass */
704 char buf[4096];
705 res = 0;
706
707 while (count)
708 {
709 ssize_t cnt;
710
711 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
712
713 if (cnt <= 0)
714 {
715 if (cnt && !res) res = -1;
716 break;
717 }
718
719 cnt = write (ofd, buf, cnt);
720
721 if (cnt <= 0)
722 {
723 if (cnt && !res) res = -1;
724 break;
725 }
726
727 offset += cnt;
728 res += cnt;
729 count -= cnt;
730 }
731 }
732
733 return res;
734}
735
736/* read a full directory */
737static int scandir_ (const char *path, void **namesp)
738{
739 DIR *dirp = opendir (path);
740 union
741 {
742 struct dirent d;
743 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
744 } u;
745 struct dirent *entp;
746 char *name, *names;
747 int memlen = 4096;
748 int memofs = 0;
749 int res = 0;
750 int errorno;
751
752 if (!dirp)
753 return -1;
754
755 names = malloc (memlen);
756
757 for (;;)
758 {
759 errno = 0, readdir_r (dirp, &u.d, &entp);
760
761 if (!entp)
762 break;
763
764 name = entp->d_name;
765
766 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767 {
768 int len = strlen (name) + 1;
769
770 res++;
771
772 while (memofs + len > memlen)
773 {
774 memlen *= 2;
775 names = realloc (names, memlen);
776 if (!names)
777 break;
778 }
779
780 memcpy (names + memofs, name, len);
781 memofs += len;
782 }
783 }
784
785 errorno = errno;
786 closedir (dirp);
787
788 if (errorno)
789 {
790 free (names);
791 errno = errorno;
792 res = -1;
793 }
794
795 *namesp = (void *)names;
796 return res;
797}
798
799/*****************************************************************************/
800
801static void *aio_proc (void *thr_arg)
802{
803 aio_req req;
804 int type;
805
806 do
807 {
808 pthread_mutex_lock (&reqlock);
809
810 for (;;)
811 {
812 req = reqs;
813
814 if (reqs)
815 {
816 reqs = reqs->next;
817 if (!reqs) reqe = 0;
818 }
819
820 if (req)
821 break;
822
823 pthread_cond_wait (&reqwait, &reqlock);
824 }
825
826 pthread_mutex_unlock (&reqlock);
827
828 errno = 0; /* strictly unnecessary */
829 type = req->type; /* remember type for QUIT check */
830
831 if (!(req->flags & FLAG_CANCELLED))
832 switch (type)
833 {
834 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
835 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
836
837 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
838 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
839
840 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
841 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
842 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
843
844 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
845 case REQ_CLOSE: req->result = close (req->fd); break;
846 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
847 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
848 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
849 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
850 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
851
852 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
853 case REQ_FSYNC: req->result = fsync (req->fd); break;
854 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
855
856 case REQ_SLEEP:
857 {
858 struct timeval tv;
859
860 tv.tv_sec = req->fd;
861 tv.tv_usec = req->fd2;
862
863 req->result = select (0, 0, 0, 0, &tv);
864 }
865
866 case REQ_GROUP:
867 case REQ_NOP:
868 case REQ_QUIT:
869 break;
870
871 default:
872 req->result = ENOSYS;
873 break;
874 }
875
876 req->errorno = errno;
877
878 pthread_mutex_lock (&reslock);
879
880 req->next = 0;
881
882 if (rese)
883 {
884 rese->next = req;
885 rese = req;
886 }
887 else
888 {
889 rese = ress = req;
890
891 /* write a dummy byte to the pipe so fh becomes ready */
892 write (respipe [1], &respipe, 1);
893 }
894
895 pthread_mutex_unlock (&reslock);
896 }
897 while (type != REQ_QUIT);
898
899 return 0;
900}
901
902/*****************************************************************************/
903
904static void atfork_prepare (void)
905{
906 pthread_mutex_lock (&reqlock);
907 pthread_mutex_lock (&reslock);
908#if !HAVE_PREADWRITE
909 pthread_mutex_lock (&preadwritelock);
910#endif
911#if !HAVE_READDIR_R
912 pthread_mutex_lock (&readdirlock);
913#endif
914}
915
916static void atfork_parent (void)
917{
918#if !HAVE_READDIR_R
919 pthread_mutex_unlock (&readdirlock);
920#endif
921#if !HAVE_PREADWRITE
922 pthread_mutex_unlock (&preadwritelock);
923#endif
924 pthread_mutex_unlock (&reslock);
925 pthread_mutex_unlock (&reqlock);
926}
927
928static void atfork_child (void)
929{
930 aio_req prv;
931
932 started = 0;
933
934 while (reqs)
935 {
936 prv = reqs;
937 reqs = prv->next;
938 req_free (prv);
939 }
940
941 reqs = reqe = 0;
942
943 while (ress)
944 {
945 prv = ress;
946 ress = prv->next;
947 req_free (prv);
948 }
949
950 ress = rese = 0;
951
952 close (respipe [0]);
953 close (respipe [1]);
954 create_pipe ();
955
956 atfork_parent ();
957} 549}
958 550
959#define dREQ \ 551#define dREQ \
552 SV *cb_cv; \
960 aio_req req; \ 553 aio_req req; \
961 int req_pri = next_pri; \ 554 int req_pri = next_pri; \
962 next_pri = DEFAULT_PRI + PRI_BIAS; \ 555 next_pri = EIO_PRI_DEFAULT; \
963 \ 556 \
964 if (SvOK (callback) && !SvROK (callback)) \ 557 cb_cv = get_cb (callback); \
965 croak ("callback must be undef or of reference type"); \
966 \ 558 \
967 Newz (0, req, 1, aio_cb); \ 559 Newz (0, req, 1, eio_req); \
968 if (!req) \ 560 if (!req) \
969 croak ("out of memory during aio_req allocation"); \ 561 croak ("out of memory during eio_req allocation"); \
970 \ 562 \
971 req->callback = newSVsv (callback); \ 563 req->callback = SvREFCNT_inc (cb_cv); \
972 req->pri = req_pri 564 req->pri = req_pri
973 565
974#define REQ_SEND \ 566#define REQ_SEND \
567 PUTBACK; \
975 req_send (req); \ 568 req_submit (req); \
569 SPAGAIN; \
976 \ 570 \
977 if (GIMME_V != G_VOID) \ 571 if (GIMME_V != G_VOID) \
978 XPUSHs (req_sv (req, AIO_REQ_KLASS)); 572 XPUSHs (req_sv (req, AIO_REQ_KLASS));
979 573
574static int
575extract_fd (SV *fh, int wr)
576{
577 int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
578
579 if (fd < 0)
580 croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
581
582 return fd;
583}
584
980MODULE = IO::AIO PACKAGE = IO::AIO 585MODULE = IO::AIO PACKAGE = IO::AIO
981 586
982PROTOTYPES: ENABLE 587PROTOTYPES: ENABLE
983 588
984BOOT: 589BOOT:
985{ 590{
591 static const struct {
592 const char *name;
593 IV iv;
594 } *civ, const_iv[] = {
595# define const_iv(name, value) { # name, (IV) value },
596# define const_eio(name) { # name, (IV) EIO_ ## name },
597 const_iv (EXDEV , EXDEV)
598 const_iv (ENOSYS , ENOSYS)
599 const_iv (O_RDONLY, O_RDONLY)
600 const_iv (O_WRONLY, O_WRONLY)
601 const_iv (O_CREAT , O_CREAT)
602 const_iv (O_TRUNC , O_TRUNC)
603#ifndef _WIN32
604 const_iv (S_IFIFO , S_IFIFO)
605#endif
606 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
607 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
608 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
609 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
610 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
611 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
612
613 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
614 const_eio (SYNC_FILE_RANGE_WRITE)
615 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
616
617 const_eio (READDIR_DENTS)
618 const_eio (READDIR_DIRS_FIRST)
619 const_eio (READDIR_STAT_ORDER)
620 const_eio (READDIR_FOUND_UNKNOWN)
621
622 const_eio (DT_UNKNOWN)
623 const_eio (DT_FIFO)
624 const_eio (DT_CHR)
625 const_eio (DT_DIR)
626 const_eio (DT_BLK)
627 const_eio (DT_REG)
628 const_eio (DT_LNK)
629 const_eio (DT_SOCK)
630 const_eio (DT_WHT)
631 };
632
986 HV *stash = gv_stashpv ("IO::AIO", 1); 633 stash = gv_stashpv ("IO::AIO", 1);
987 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
988 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
989 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
990 634
635 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
636 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
637
991 create_pipe (); 638 create_respipe ();
992 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
993}
994 639
640 if (eio_init (want_poll, done_poll) < 0)
641 croak ("IO::AIO: unable to initialise eio library");
642
643 /* atfork child called in fifo order, so before eio's handler */
644 X_THREAD_ATFORK (0, 0, atfork_child);
645}
646
995void 647void
996min_parallel (nthreads) 648max_poll_reqs (int nreqs)
997 int nthreads
998 PROTOTYPE: $ 649 PROTOTYPE: $
650 CODE:
651 eio_set_max_poll_reqs (nreqs);
999 652
1000void 653void
1001max_parallel (nthreads) 654max_poll_time (double nseconds)
1002 int nthreads
1003 PROTOTYPE: $ 655 PROTOTYPE: $
1004
1005int
1006max_outstanding (nreqs)
1007 int nreqs
1008 PROTOTYPE: $
1009 CODE: 656 CODE:
1010 RETVAL = max_outstanding; 657 eio_set_max_poll_time (nseconds);
658
659void
660min_parallel (int nthreads)
661 PROTOTYPE: $
662 CODE:
663 eio_set_min_parallel (nthreads);
664
665void
666max_parallel (int nthreads)
667 PROTOTYPE: $
668 CODE:
669 eio_set_max_parallel (nthreads);
670
671void
672max_idle (int nthreads)
673 PROTOTYPE: $
674 CODE:
675 eio_set_max_idle (nthreads);
676
677void
678max_outstanding (int maxreqs)
679 PROTOTYPE: $
680 CODE:
1011 max_outstanding = nreqs; 681 max_outstanding = maxreqs;
1012 682
1013void 683void
1014aio_open (pathname,flags,mode,callback=&PL_sv_undef) 684aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1015 SV * pathname
1016 int flags
1017 int mode
1018 SV * callback
1019 PROTOTYPE: $$$;$ 685 PROTOTYPE: $$$;$
1020 PPCODE: 686 PPCODE:
1021{ 687{
1022 dREQ; 688 dREQ;
1023 689
1024 req->type = REQ_OPEN; 690 req->type = EIO_OPEN;
1025 req->data = newSVsv (pathname); 691 req->sv1 = newSVsv (pathname);
1026 req->dataptr = SvPVbyte_nolen (req->data); 692 req->ptr1 = SvPVbyte_nolen (req->sv1);
1027 req->fd = flags; 693 req->int1 = flags;
1028 req->mode = mode; 694 req->int2 = mode;
1029 695
1030 REQ_SEND; 696 REQ_SEND;
1031} 697}
1032 698
1033void 699void
1034aio_close (fh,callback=&PL_sv_undef) 700aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1035 SV * fh
1036 SV * callback
1037 PROTOTYPE: $;$ 701 PROTOTYPE: $;$
1038 ALIAS: 702 ALIAS:
1039 aio_close = REQ_CLOSE
1040 aio_fsync = REQ_FSYNC 703 aio_fsync = EIO_FSYNC
1041 aio_fdatasync = REQ_FDATASYNC 704 aio_fdatasync = EIO_FDATASYNC
1042 PPCODE: 705 PPCODE:
1043{ 706{
707 int fd = extract_fd (fh, 0);
1044 dREQ; 708 dREQ;
1045 709
1046 req->type = ix; 710 req->type = ix;
1047 req->fh = newSVsv (fh); 711 req->sv1 = newSVsv (fh);
1048 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 712 req->int1 = fd;
1049 713
1050 REQ_SEND (req); 714 REQ_SEND (req);
1051} 715}
1052 716
1053void 717void
718aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
719 PROTOTYPE: $$$$;$
720 PPCODE:
721{
722 int fd = extract_fd (fh, 0);
723 dREQ;
724
725 req->type = EIO_SYNC_FILE_RANGE;
726 req->sv1 = newSVsv (fh);
727 req->int1 = fd;
728 req->offs = offset;
729 req->size = nbytes;
730 req->int2 = flags;
731
732 REQ_SEND (req);
733}
734
735void
736aio_close (SV *fh, SV *callback=&PL_sv_undef)
737 PROTOTYPE: $;$
738 PPCODE:
739{
740 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
741 int fd = extract_fd (fh, 0);
742 dREQ;
743
744 if (close_pipe < 0)
745 {
746 int pipefd [2];
747
748 if (pipe (pipefd) < 0
749 || close (pipefd [1]) < 0
750 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
751 abort (); /*D*/
752
753 close_pipe = pipefd [0];
754 }
755
756 req->type = EIO_DUP2;
757 req->int1 = close_pipe;
758 req->sv2 = newSVsv (fh);
759 req->int2 = fd;
760
761 REQ_SEND (req);
762}
763
764void
1054aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 765aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1055 SV * fh
1056 UV offset
1057 UV length
1058 SV * data
1059 UV dataoffset
1060 SV * callback
1061 ALIAS: 766 ALIAS:
1062 aio_read = REQ_READ 767 aio_read = EIO_READ
1063 aio_write = REQ_WRITE 768 aio_write = EIO_WRITE
1064 PROTOTYPE: $$$$$;$ 769 PROTOTYPE: $$$$$;$
1065 PPCODE: 770 PPCODE:
1066{ 771{
1067 aio_req req;
1068 STRLEN svlen; 772 STRLEN svlen;
773 int fd = extract_fd (fh, ix == EIO_WRITE);
1069 char *svptr = SvPVbyte (data, svlen); 774 char *svptr = SvPVbyte (data, svlen);
1070 775 UV len = SvUV (length);
1071 SvUPGRADE (data, SVt_PV);
1072 SvPOK_on (data);
1073 776
1074 if (dataoffset < 0) 777 if (dataoffset < 0)
1075 dataoffset += svlen; 778 dataoffset += svlen;
1076 779
1077 if (dataoffset < 0 || dataoffset > svlen) 780 if (dataoffset < 0 || dataoffset > svlen)
1078 croak ("data offset outside of string"); 781 croak ("dataoffset outside of data scalar");
1079 782
1080 if (ix == REQ_WRITE) 783 if (ix == EIO_WRITE)
1081 { 784 {
1082 /* write: check length and adjust. */ 785 /* write: check length and adjust. */
1083 if (length < 0 || length + dataoffset > svlen) 786 if (!SvOK (length) || len + dataoffset > svlen)
1084 length = svlen - dataoffset; 787 len = svlen - dataoffset;
1085 } 788 }
1086 else 789 else
1087 { 790 {
1088 /* read: grow scalar as necessary */ 791 /* read: check type and grow scalar as necessary */
792 SvUPGRADE (data, SVt_PV);
1089 svptr = SvGROW (data, length + dataoffset); 793 svptr = SvGROW (data, len + dataoffset + 1);
1090 } 794 }
1091
1092 if (length < 0)
1093 croak ("length must not be negative");
1094 795
1095 { 796 {
1096 dREQ; 797 dREQ;
1097 798
1098 req->type = ix; 799 req->type = ix;
1099 req->fh = newSVsv (fh); 800 req->sv1 = newSVsv (fh);
1100 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 801 req->int1 = fd;
1101 : IoOFP (sv_2io (fh))); 802 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1102 req->offset = offset; 803 req->size = len;
1103 req->length = length;
1104 req->data = SvREFCNT_inc (data); 804 req->sv2 = SvREFCNT_inc (data);
1105 req->dataptr = (char *)svptr + dataoffset; 805 req->ptr2 = (char *)svptr + dataoffset;
806 req->stroffset = dataoffset;
1106 807
1107 if (!SvREADONLY (data)) 808 if (!SvREADONLY (data))
1108 { 809 {
1109 SvREADONLY_on (data); 810 SvREADONLY_on (data);
1110 req->data2ptr = (void *)data; 811 req->flags |= FLAG_SV2_RO_OFF;
1111 } 812 }
1112 813
1113 REQ_SEND; 814 REQ_SEND;
1114 } 815 }
1115} 816}
1116 817
1117void 818void
819aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
820 PROTOTYPE: $$;$
821 PPCODE:
822{
823 SV *data;
824 dREQ;
825
826 req->type = EIO_READLINK;
827 req->sv1 = newSVsv (path);
828 req->ptr1 = SvPVbyte_nolen (req->sv1);
829
830 REQ_SEND;
831}
832
833void
1118aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 834aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1119 SV * out_fh
1120 SV * in_fh
1121 UV in_offset
1122 UV length
1123 SV * callback
1124 PROTOTYPE: $$$$;$ 835 PROTOTYPE: $$$$;$
1125 PPCODE: 836 PPCODE:
1126{ 837{
838 int ifd = extract_fd (in_fh , 0);
839 int ofd = extract_fd (out_fh, 0);
1127 dREQ; 840 dREQ;
1128 841
1129 req->type = REQ_SENDFILE; 842 req->type = EIO_SENDFILE;
1130 req->fh = newSVsv (out_fh); 843 req->sv1 = newSVsv (out_fh);
1131 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 844 req->int1 = ofd;
1132 req->fh2 = newSVsv (in_fh); 845 req->sv2 = newSVsv (in_fh);
1133 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 846 req->int2 = ifd;
1134 req->offset = in_offset; 847 req->offs = in_offset;
1135 req->length = length; 848 req->size = length;
1136 849
1137 REQ_SEND; 850 REQ_SEND;
1138} 851}
1139 852
1140void 853void
1141aio_readahead (fh,offset,length,callback=&PL_sv_undef) 854aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1142 SV * fh
1143 UV offset
1144 IV length
1145 SV * callback
1146 PROTOTYPE: $$$;$ 855 PROTOTYPE: $$$;$
1147 PPCODE: 856 PPCODE:
1148{ 857{
858 int fd = extract_fd (fh, 0);
1149 dREQ; 859 dREQ;
1150 860
1151 req->type = REQ_READAHEAD; 861 req->type = EIO_READAHEAD;
1152 req->fh = newSVsv (fh); 862 req->sv1 = newSVsv (fh);
1153 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 863 req->int1 = fd;
1154 req->offset = offset; 864 req->offs = offset;
1155 req->length = length; 865 req->size = length;
1156 866
1157 REQ_SEND; 867 REQ_SEND;
1158} 868}
1159 869
1160void 870void
1161aio_stat (fh_or_path,callback=&PL_sv_undef) 871aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1162 SV * fh_or_path
1163 SV * callback
1164 ALIAS: 872 ALIAS:
1165 aio_stat = REQ_STAT 873 aio_stat = EIO_STAT
1166 aio_lstat = REQ_LSTAT 874 aio_lstat = EIO_LSTAT
1167 PPCODE: 875 PPCODE:
1168{ 876{
1169 dREQ; 877 dREQ;
1170 878
1171 New (0, req->statdata, 1, Stat_t); 879 req->sv1 = newSVsv (fh_or_path);
1172 if (!req->statdata)
1173 {
1174 req_free (req);
1175 croak ("out of memory during aio_req->statdata allocation");
1176 }
1177 880
1178 if (SvPOK (fh_or_path)) 881 if (SvPOK (req->sv1))
1179 { 882 {
1180 req->type = ix; 883 req->type = ix;
1181 req->data = newSVsv (fh_or_path);
1182 req->dataptr = SvPVbyte_nolen (req->data); 884 req->ptr1 = SvPVbyte_nolen (req->sv1);
1183 } 885 }
1184 else 886 else
1185 { 887 {
1186 req->type = REQ_FSTAT; 888 req->type = EIO_FSTAT;
1187 req->fh = newSVsv (fh_or_path);
1188 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 889 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1189 } 890 }
1190 891
1191 REQ_SEND; 892 REQ_SEND;
1192} 893}
1193 894
1194void 895void
896aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
897 PPCODE:
898{
899 dREQ;
900
901 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
902 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
903 req->sv1 = newSVsv (fh_or_path);
904
905 if (SvPOK (req->sv1))
906 {
907 req->type = EIO_UTIME;
908 req->ptr1 = SvPVbyte_nolen (req->sv1);
909 }
910 else
911 {
912 req->type = EIO_FUTIME;
913 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
914 }
915
916 REQ_SEND;
917}
918
919void
920aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
921 PPCODE:
922{
923 dREQ;
924
925 req->sv1 = newSVsv (fh_or_path);
926 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
927
928 if (SvPOK (req->sv1))
929 {
930 req->type = EIO_TRUNCATE;
931 req->ptr1 = SvPVbyte_nolen (req->sv1);
932 }
933 else
934 {
935 req->type = EIO_FTRUNCATE;
936 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
937 }
938
939 REQ_SEND;
940}
941
942void
943aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
944 ALIAS:
945 aio_chmod = EIO_CHMOD
946 aio_mkdir = EIO_MKDIR
947 PPCODE:
948{
949 dREQ;
950
951 req->int2 = mode;
952 req->sv1 = newSVsv (fh_or_path);
953
954 if (SvPOK (req->sv1))
955 {
956 req->type = ix;
957 req->ptr1 = SvPVbyte_nolen (req->sv1);
958 }
959 else
960 {
961 req->type = EIO_FCHMOD;
962 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
963 }
964
965 REQ_SEND;
966}
967
968void
969aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
970 PPCODE:
971{
972 dREQ;
973
974 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
975 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
976 req->sv1 = newSVsv (fh_or_path);
977
978 if (SvPOK (req->sv1))
979 {
980 req->type = EIO_CHOWN;
981 req->ptr1 = SvPVbyte_nolen (req->sv1);
982 }
983 else
984 {
985 req->type = EIO_FCHOWN;
986 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
987 }
988
989 REQ_SEND;
990}
991
992void
993aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
994 PPCODE:
995{
996 dREQ;
997
998 req->type = EIO_READDIR;
999 req->sv1 = newSVsv (pathname);
1000 req->ptr1 = SvPVbyte_nolen (req->sv1);
1001 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1002
1003 if (flags & EIO_READDIR_DENTS)
1004 req->int1 |= EIO_READDIR_CUSTOM2;
1005
1006 REQ_SEND;
1007}
1008
1009void
1195aio_unlink (pathname,callback=&PL_sv_undef) 1010aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1196 SV * pathname
1197 SV * callback
1198 ALIAS: 1011 ALIAS:
1199 aio_unlink = REQ_UNLINK 1012 aio_unlink = EIO_UNLINK
1200 aio_rmdir = REQ_RMDIR 1013 aio_rmdir = EIO_RMDIR
1201 aio_readdir = REQ_READDIR 1014 aio_readdir = EIO_READDIR
1202 PPCODE: 1015 PPCODE:
1203{ 1016{
1204 dREQ; 1017 dREQ;
1205 1018
1206 req->type = ix; 1019 req->type = ix;
1207 req->data = newSVsv (pathname); 1020 req->sv1 = newSVsv (pathname);
1208 req->dataptr = SvPVbyte_nolen (req->data); 1021 req->ptr1 = SvPVbyte_nolen (req->sv1);
1209 1022
1210 REQ_SEND; 1023 REQ_SEND;
1211} 1024}
1212 1025
1213void 1026void
1214aio_link (oldpath,newpath,callback=&PL_sv_undef) 1027aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1215 SV * oldpath
1216 SV * newpath
1217 SV * callback
1218 ALIAS: 1028 ALIAS:
1219 aio_link = REQ_LINK 1029 aio_link = EIO_LINK
1220 aio_symlink = REQ_SYMLINK 1030 aio_symlink = EIO_SYMLINK
1221 aio_rename = REQ_RENAME 1031 aio_rename = EIO_RENAME
1222 PPCODE: 1032 PPCODE:
1223{ 1033{
1224 dREQ; 1034 dREQ;
1225 1035
1226 req->type = ix; 1036 req->type = ix;
1227 req->fh = newSVsv (oldpath); 1037 req->sv1 = newSVsv (oldpath);
1228 req->data2ptr = SvPVbyte_nolen (req->fh); 1038 req->ptr1 = SvPVbyte_nolen (req->sv1);
1229 req->data = newSVsv (newpath); 1039 req->sv2 = newSVsv (newpath);
1230 req->dataptr = SvPVbyte_nolen (req->data); 1040 req->ptr2 = SvPVbyte_nolen (req->sv2);
1231 1041
1232 REQ_SEND; 1042 REQ_SEND;
1233} 1043}
1234 1044
1235void 1045void
1236aio_sleep (delay,callback=&PL_sv_undef) 1046aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1237 double delay
1238 SV * callback
1239 PPCODE: 1047 PPCODE:
1240{ 1048{
1241 dREQ; 1049 dREQ;
1242 1050
1243 req->type = REQ_SLEEP; 1051 req->type = EIO_MKNOD;
1244 req->fd = delay < 0. ? 0 : delay; 1052 req->sv1 = newSVsv (pathname);
1245 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1053 req->ptr1 = SvPVbyte_nolen (req->sv1);
1246 1054 req->int2 = (mode_t)mode;
1055 req->offs = dev;
1056
1247 REQ_SEND; 1057 REQ_SEND;
1248} 1058}
1249 1059
1250void 1060void
1061aio_busy (double delay, SV *callback=&PL_sv_undef)
1062 PPCODE:
1063{
1064 dREQ;
1065
1066 req->type = EIO_BUSY;
1067 req->nv1 = delay < 0. ? 0. : delay;
1068
1069 REQ_SEND;
1070}
1071
1072void
1251aio_group (callback=&PL_sv_undef) 1073aio_group (SV *callback=&PL_sv_undef)
1252 SV * callback
1253 PROTOTYPE: ;$ 1074 PROTOTYPE: ;$
1254 PPCODE: 1075 PPCODE:
1255{ 1076{
1256 dREQ; 1077 dREQ;
1257 1078
1258 req->type = REQ_GROUP; 1079 req->type = EIO_GROUP;
1080
1259 req_send (req); 1081 req_submit (req);
1260
1261 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1082 XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262} 1083}
1263 1084
1264void 1085void
1265aio_nop (callback=&PL_sv_undef) 1086aio_nop (SV *callback=&PL_sv_undef)
1266 SV * callback 1087 ALIAS:
1088 aio_nop = EIO_NOP
1089 aio_sync = EIO_SYNC
1267 PPCODE: 1090 PPCODE:
1268{ 1091{
1269 dREQ; 1092 dREQ;
1270 1093
1271 req->type = REQ_NOP; 1094 req->type = ix;
1272 1095
1273 REQ_SEND; 1096 REQ_SEND;
1274} 1097}
1275 1098
1276#if 0 1099int
1277 1100aioreq_pri (int pri = 0)
1278void 1101 PROTOTYPE: ;$
1279aio_pri (int pri = DEFAULT_PRI)
1280 CODE: 1102 CODE:
1103 RETVAL = next_pri;
1104 if (items > 0)
1105 {
1281 if (pri < PRI_MIN) pri = PRI_MIN; 1106 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1282 if (pri > PRI_MAX) pri = PRI_MAX; 1107 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1283 next_pri = pri + PRI_BIAS; 1108 next_pri = pri;
1109 }
1110 OUTPUT:
1111 RETVAL
1284 1112
1285#endif 1113void
1114aioreq_nice (int nice = 0)
1115 CODE:
1116 nice = next_pri - nice;
1117 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1118 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1119 next_pri = nice;
1286 1120
1287void 1121void
1288flush () 1122flush ()
1289 PROTOTYPE: 1123 PROTOTYPE:
1290 CODE: 1124 CODE:
1291 while (nreqs) 1125 while (eio_nreqs ())
1292 { 1126 {
1293 poll_wait (); 1127 poll_wait ();
1294 poll_cb (); 1128 poll_cb ();
1295 } 1129 }
1296 1130
1297void 1131int
1298poll() 1132poll()
1299 PROTOTYPE: 1133 PROTOTYPE:
1300 CODE: 1134 CODE:
1301 if (nreqs)
1302 {
1303 poll_wait (); 1135 poll_wait ();
1304 poll_cb (); 1136 RETVAL = poll_cb ();
1305 } 1137 OUTPUT:
1138 RETVAL
1306 1139
1307int 1140int
1308poll_fileno() 1141poll_fileno()
1309 PROTOTYPE: 1142 PROTOTYPE:
1310 CODE: 1143 CODE:
1322 1155
1323void 1156void
1324poll_wait() 1157poll_wait()
1325 PROTOTYPE: 1158 PROTOTYPE:
1326 CODE: 1159 CODE:
1327 if (nreqs)
1328 poll_wait (); 1160 poll_wait ();
1329 1161
1330int 1162int
1331nreqs() 1163nreqs()
1332 PROTOTYPE: 1164 PROTOTYPE:
1333 CODE: 1165 CODE:
1334 RETVAL = nreqs; 1166 RETVAL = eio_nreqs ();
1335 OUTPUT: 1167 OUTPUT:
1336 RETVAL 1168 RETVAL
1337 1169
1170int
1171nready()
1172 PROTOTYPE:
1173 CODE:
1174 RETVAL = eio_nready ();
1175 OUTPUT:
1176 RETVAL
1177
1178int
1179npending()
1180 PROTOTYPE:
1181 CODE:
1182 RETVAL = eio_npending ();
1183 OUTPUT:
1184 RETVAL
1185
1186int
1187nthreads()
1188 PROTOTYPE:
1189 CODE:
1190 RETVAL = eio_nthreads ();
1191 OUTPUT:
1192 RETVAL
1193
1194int
1195fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1196 PROTOTYPE: $$$$
1197 CODE:
1198{
1199 #if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1200 RETVAL = posix_fadvise (fh, offset, length, advice);
1201 #else
1202 RETVAL = errno = ENOSYS;
1203 #endif
1204}
1205 OUTPUT:
1206 RETVAL
1207
1208ssize_t
1209sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1210 PROTOTYPE: $$$$
1211 CODE:
1212 eio_sendfile_sync (ofh, ifh, offset, count);
1213
1214void _on_next_submit (SV *cb)
1215 CODE:
1216 SvREFCNT_dec (on_next_submit);
1217 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1218
1338PROTOTYPES: DISABLE 1219PROTOTYPES: DISABLE
1339 1220
1340MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1221MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341 1222
1342void 1223void
1343cancel (aio_req_ornot req) 1224cancel (aio_req_ornot req)
1344 PROTOTYPE:
1345 CODE: 1225 CODE:
1346 req_cancel (req); 1226 eio_cancel (req);
1347 1227
1348void 1228void
1349cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1229cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1350 CODE: 1230 PPCODE:
1231{
1232 if (GIMME_V != G_VOID)
1233 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1234
1235 if (items > 1)
1236 {
1237 SV *cb_cv = get_cb (callback);
1238
1351 SvREFCNT_dec (req->callback); 1239 SvREFCNT_dec (req->callback);
1352 req->callback = newSVsv (callback); 1240 req->callback = SvREFCNT_inc (cb_cv);
1241 }
1242}
1353 1243
1354MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1244MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1355 1245
1356void 1246void
1357add (aio_req grp, ...) 1247add (aio_req grp, ...)
1358 PPCODE: 1248 PPCODE:
1359{ 1249{
1360 int i; 1250 int i;
1361 aio_req req;
1362 1251
1363 if (grp->fd == 2) 1252 if (grp->int1 == 2)
1364 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1253 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1365 1254
1366 for (i = 1; i < items; ++i ) 1255 for (i = 1; i < items; ++i )
1367 { 1256 {
1257 aio_req req;
1258
1368 if (GIMME_V != G_VOID) 1259 if (GIMME_V != G_VOID)
1369 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1260 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1370 1261
1371 req = SvAIO_REQ (ST (i)); 1262 req = SvAIO_REQ (ST (i));
1372 1263
1373 if (req) 1264 if (req)
1374 { 1265 eio_grp_add (grp, req);
1375 ++grp->length;
1376 req->grp = grp;
1377
1378 req->grp_prev = 0;
1379 req->grp_next = grp->grp_first;
1380
1381 if (grp->grp_first)
1382 grp->grp_first->grp_prev = req;
1383
1384 grp->grp_first = req;
1385 } 1266 }
1386 }
1387} 1267}
1268
1269void
1270cancel_subs (aio_req_ornot req)
1271 CODE:
1272 req_cancel_subs (req);
1388 1273
1389void 1274void
1390result (aio_req grp, ...) 1275result (aio_req grp, ...)
1391 CODE: 1276 CODE:
1392{ 1277{
1393 int i; 1278 int i;
1279 AV *av;
1280
1281 grp->errorno = errno;
1282
1394 AV *av = newAV (); 1283 av = newAV ();
1284 av_extend (av, items - 1);
1395 1285
1396 for (i = 1; i < items; ++i ) 1286 for (i = 1; i < items; ++i )
1397 av_push (av, newSVsv (ST (i))); 1287 av_push (av, newSVsv (ST (i)));
1398 1288
1399 SvREFCNT_dec (grp->data); 1289 SvREFCNT_dec (grp->sv1);
1400 grp->data = (SV *)av; 1290 grp->sv1 = (SV *)av;
1401} 1291}
1402 1292
1403void 1293void
1294errno (aio_req grp, int errorno = errno)
1295 CODE:
1296 grp->errorno = errorno;
1297
1298void
1404feed_limit (aio_req grp, int limit) 1299limit (aio_req grp, int limit)
1405 CODE: 1300 CODE:
1406 grp->fd2 = limit; 1301 eio_grp_limit (grp, limit);
1407 aio_grp_feed (grp);
1408 1302
1409void 1303void
1410feed (aio_req grp, SV *callback=&PL_sv_undef) 1304feed (aio_req grp, SV *callback=&PL_sv_undef)
1411 CODE: 1305 CODE:
1412{ 1306{
1413 SvREFCNT_dec (grp->fh2); 1307 SvREFCNT_dec (grp->sv2);
1414 grp->fh2 = newSVsv (callback); 1308 grp->sv2 = newSVsv (callback);
1309 grp->feed = aio_grp_feed;
1415 1310
1416 if (grp->fd2 <= 0) 1311 if (grp->int2 <= 0)
1417 grp->fd2 = 2; 1312 grp->int2 = 2;
1418 1313
1419 aio_grp_feed (grp); 1314 eio_grp_limit (grp, grp->int2);
1420} 1315}
1421 1316

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