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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.19 by root, Sun Jul 31 19:04:45 2005 UTC vs.
Revision 1.196 by root, Tue Sep 27 00:41:51 2011 UTC

1#ifndef _REENTRANT 1#include "libeio/xthread.h"
2# define _REENTRANT 1 2
3#endif
4#include <errno.h> 3#include <errno.h>
5 4
6#include "EXTERN.h" 5#include "EXTERN.h"
7#include "perl.h" 6#include "perl.h"
8#include "XSUB.h" 7#include "XSUB.h"
9 8
10#include "autoconf/config.h" 9#include "schmorp.h"
11 10
11#include <stddef.h>
12#include <stdlib.h>
13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14
15#include <unistd.h> 16#include <limits.h>
16#include <fcntl.h> 17#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 18#include <sched.h>
19 19
20#include <pthread.h> 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
21 23
22typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 24/* perl namespace pollution */
23typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 25#undef VERSION
24typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
25 26
26#if __ia64 27/* perl stupidly overrides readdir and maybe others */
27# define STACKSIZE 65536 28/* with thread-unsafe versions, imagine that :( */
29#undef readdir
30#undef opendir
31#undef closedir
32
33#ifdef _WIN32
34
35 // perl overrides all those nice libc functions
36
37 #undef malloc
38 #undef free
39 #undef open
40 #undef read
41 #undef write
42 #undef send
43 #undef recv
44 #undef stat
45 #undef lstat
46 #undef fstat
47 #undef truncate
48 #undef ftruncate
49 #undef open
50 #undef link
51 #undef close
52 #undef unlink
53 #undef mkdir
54 #undef rmdir
55 #undef rename
56 #undef lseek
57 #undef opendir
58 #undef readdir
59 #undef closedir
60 #undef chmod
61 #undef fchmod
62 #undef dup
63 #undef dup2
64 #undef abort
65 #undef pipe
66
28#else 67#else
29# define STACKSIZE 4096 68
69 #include <sys/time.h>
70 #include <sys/select.h>
71 #include <unistd.h>
72 #include <utime.h>
73 #include <signal.h>
74
75#endif
76
77#define EIO_STRUCT_STAT Stat_t
78
79/* use NV for 32 bit perls as it allows larger offsets */
80#if IVSIZE >= 8
81# define VAL64 IV
82# define SvVAL64 SvIV
83# define newSVval64 newSViv
84#else
85# define VAL64 NV
86# define SvVAL64 SvNV
87# define newSVval64 newSVnv
88#endif
89
90/*****************************************************************************/
91
92#if __GNUC__ >= 3
93# define expect(expr,value) __builtin_expect ((expr),(value))
94#else
95# define expect(expr,value) (expr)
96#endif
97
98#define expect_false(expr) expect ((expr) != 0, 0)
99#define expect_true(expr) expect ((expr) != 0, 1)
100
101/*****************************************************************************/
102
103typedef SV SV8; /* byte-sv, used for argument-checking */
104typedef int aio_rfd; /* read file desriptor */
105typedef int aio_wfd; /* write file descriptor */
106
107static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
108
109#define EIO_REQ_MEMBERS \
110 SV *callback; \
111 SV *sv1, *sv2; \
112 SV *sv3, *sv4; \
113 STRLEN stroffset; \
114 SV *self;
115
116#define EIO_NO_WRAPPERS 1
117
118#include "libeio/config.h"
119#include "libeio/eio.h"
120
121static int req_invoke (eio_req *req);
122#define EIO_FINISH(req) req_invoke (req)
123static void req_destroy (eio_req *grp);
124#define EIO_DESTROY(req) req_destroy (req)
125
126#include "libeio/eio.c"
127
128/* Linux/others */
129#ifndef O_ASYNC
130# define O_ASYNC 0
131#endif
132#ifndef O_DIRECT
133# define O_DIRECT 0
134#endif
135#ifndef O_NOATIME
136# define O_NOATIME 0
137#endif
138
139/* POSIX */
140#ifndef O_CLOEXEC
141# define O_CLOEXEC 0
142#endif
143#ifndef O_NOFOLLOW
144# define O_NOFOLLOW 0
145#endif
146#ifndef O_NOCTTY
147# define O_NOCTTY 0
148#endif
149#ifndef O_NONBLOCK
150# define O_NONBLOCK 0
151#endif
152#ifndef O_EXEC
153# define O_EXEC 0
154#endif
155#ifndef O_SEARCH
156# define O_SEARCH 0
157#endif
158#ifndef O_DIRECTORY
159# define O_DIRECTORY 0
160#endif
161#ifndef O_DSYNC
162# define O_DSYNC 0
163#endif
164#ifndef O_RSYNC
165# define O_RSYNC 0
166#endif
167#ifndef O_SYNC
168# define O_SYNC 0
169#endif
170#ifndef O_TTY_INIT
171# define O_TTY_INIT 0
172#endif
173
174#ifndef POSIX_FADV_NORMAL
175# define POSIX_FADV_NORMAL 0
176#endif
177#ifndef POSIX_FADV_SEQUENTIAL
178# define POSIX_FADV_SEQUENTIAL 0
179#endif
180#ifndef POSIX_FADV_RANDOM
181# define POSIX_FADV_RANDOM 0
182#endif
183#ifndef POSIX_FADV_NOREUSE
184# define POSIX_FADV_NOREUSE 0
185#endif
186#ifndef POSIX_FADV_WILLNEED
187# define POSIX_FADV_WILLNEED 0
188#endif
189#ifndef POSIX_FADV_DONTNEED
190# define POSIX_FADV_DONTNEED 0
191#endif
192
193#if !HAVE_POSIX_FADVISE
194# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
195#endif
196
197#ifndef POSIX_MADV_NORMAL
198# define POSIX_MADV_NORMAL 0
199#endif
200#ifndef POSIX_MADV_SEQUENTIAL
201# define POSIX_MADV_SEQUENTIAL 0
202#endif
203#ifndef POSIX_MADV_RANDOM
204# define POSIX_MADV_RANDOM 0
205#endif
206#ifndef POSIX_MADV_WILLNEED
207# define POSIX_MADV_WILLNEED 0
208#endif
209#ifndef POSIX_MADV_DONTNEED
210# define POSIX_MADV_DONTNEED 0
211#endif
212
213#if !HAVE_POSIX_MADVISE
214# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
215#endif
216
217#ifndef PROT_NONE
218# define PROT_NONE 0
219#endif
220#ifndef PROT_READ
221# define PROT_READ 0
222#endif
223#ifndef PROT_WRITE
224# define PROT_READ 0
225#endif
226#ifndef PROT_EXEC
227# define PROT_EXEC 0
228#endif
229
230#ifndef ST_RDONLY
231# define ST_RDONLY 0
232#endif
233#ifndef ST_NOSUID
234# define ST_NOSUID 0
235#endif
236#ifndef ST_NODEV
237# define ST_NODEV 0
238#endif
239#ifndef ST_NOEXEC
240# define ST_NOEXEC 0
241#endif
242#ifndef ST_SYNCHRONOUS
243# define ST_SYNCHRONOUS 0
244#endif
245#ifndef ST_MANDLOCK
246# define ST_MANDLOCK 0
247#endif
248#ifndef ST_WRITE
249# define ST_WRITE 0
250#endif
251#ifndef ST_APPEND
252# define ST_APPEND 0
253#endif
254#ifndef ST_IMMUTABLE
255# define ST_IMMUTABLE 0
256#endif
257#ifndef ST_NOATIME
258# define ST_NOATIME 0
259#endif
260#ifndef ST_NODIRATIME
261# define ST_NODIRATIME 0
262#endif
263#ifndef ST_RELATIME
264# define ST_RELATIME 0
265#endif
266
267#ifndef S_IFIFO
268# define S_IFIFO 0
269#endif
270#ifndef S_IFCHR
271# define S_IFCHR 0
272#endif
273#ifndef S_IFBLK
274# define S_IFBLK 0
275#endif
276#ifndef S_IFLNK
277# define S_IFLNK 0
278#endif
279#ifndef S_IFREG
280# define S_IFREG 0
281#endif
282#ifndef S_IFDIR
283# define S_IFDIR 0
284#endif
285#ifndef S_IFWHT
286# define S_IFWHT 0
287#endif
288#ifndef S_IFSOCK
289# define S_IFSOCK 0
290#endif
291
292#ifndef MAP_ANONYMOUS
293# ifdef MAP_ANON
294# define MAP_ANONYMOUS MAP_ANON
295# else
296# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
297# endif
298#endif
299#ifndef MAP_HUGETLB
300# define MAP_HUGETLB 0
301#endif
302#ifndef MAP_LOCKED
303# define MAP_LOCKED 0
304#endif
305#ifndef MAP_NORESERVE
306# define MAP_NORESERVE 0
307#endif
308#ifndef MAP_POPULATE
309# define MAP_POPULATE 0
310#endif
311#ifndef MAP_NONBLOCK
312# define MAP_NONBLOCK 0
313#endif
314
315#ifndef makedev
316# define makedev(maj,min) (((maj) << 8) | (min))
317#endif
318#ifndef major
319# define major(dev) ((dev) >> 8)
320#endif
321#ifndef minor
322# define minor(dev) ((dev) & 0xff)
323#endif
324
325#ifndef PAGESIZE
326# define PAGESIZE sysconf (_SC_PAGESIZE)
30#endif 327#endif
31 328
32enum { 329enum {
33 REQ_QUIT, 330 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
34 REQ_OPEN, REQ_CLOSE,
35 REQ_READ, REQ_WRITE, REQ_READAHEAD,
36 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
37 REQ_FSYNC, REQ_FDATASYNC,
38}; 331};
39 332
40typedef struct aio_cb {
41 struct aio_cb *volatile next;
42
43 int type;
44
45 int fd;
46 off_t offset;
47 size_t length;
48 ssize_t result;
49 mode_t mode; /* open */
50 int errorno;
51 SV *data, *callback, *fh;
52 void *dataptr;
53 STRLEN dataoffset;
54
55 Stat_t *statdata;
56} aio_cb;
57
58typedef aio_cb *aio_req; 333typedef eio_req *aio_req;
334typedef eio_req *aio_req_ornot;
335typedef eio_wd aio_wd;
59 336
60static int started; 337static SV *on_next_submit;
61static volatile int nreqs; 338static int next_pri = EIO_PRI_DEFAULT;
62static int max_outstanding = 1<<30; 339static int max_outstanding;
63static int respipe [2];
64 340
65static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 341static s_epipe respipe;
66static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68 342
69static volatile aio_req reqs, reqe; /* queue start, queue end */ 343static void req_destroy (aio_req req);
70static volatile aio_req ress, rese; /* queue start, queue end */ 344static void req_cancel (aio_req req);
71 345
72static void 346static void want_poll (void)
73poll_wait ()
74{ 347{
75 if (nreqs && !ress) 348 /* write a dummy byte to the pipe so fh becomes ready */
349 s_epipe_signal (&respipe);
350}
351
352static void done_poll (void)
353{
354 /* read any signals sent by the worker threads */
355 s_epipe_drain (&respipe);
356}
357
358/* must be called at most once */
359static SV *req_sv (aio_req req, HV *stash)
360{
361 if (!req->self)
76 { 362 {
77 fd_set rfd; 363 req->self = (SV *)newHV ();
78 FD_ZERO(&rfd); 364 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
79 FD_SET(respipe [0], &rfd);
80
81 select (respipe [0] + 1, &rfd, 0, 0, 0);
82 } 365 }
83}
84 366
85static int 367 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
86poll_cb () 368}
87{
88 dSP;
89 int count = 0;
90 aio_req req, prv;
91 369
92 pthread_mutex_lock (&reslock); 370static SV *
371newSVaio_wd (aio_wd wd)
372{
373 return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
374}
93 375
94 { 376static aio_req SvAIO_REQ (SV *sv)
95 /* read any signals sent by the worker threads */ 377{
96 char buf [32]; 378 MAGIC *mg;
97 while (read (respipe [0], buf, 32) > 0)
98 ;
99 }
100 379
101 req = ress; 380 if (!SvROK (sv)
102 ress = rese = 0; 381 || (SvSTASH (SvRV (sv)) != aio_grp_stash
382 && SvSTASH (SvRV (sv)) != aio_req_stash
383 && !sv_derived_from (sv, "IO::AIO::REQ")))
384 croak ("object of class IO::AIO::REQ expected");
103 385
104 pthread_mutex_unlock (&reslock); 386 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
105 387
106 while (req) 388 return mg ? (aio_req)mg->mg_ptr : 0;
389}
390
391static aio_wd SvAIO_WD (SV *sv)
392{
393 if (!SvROK (sv)
394 || SvSTASH (SvRV (sv)) != aio_wd_stash
395 || SvTYPE (SvRV (sv)) != SVt_PVMG)
396 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
397
398 return (aio_wd)(long)SvIVX (SvRV (sv));
399}
400
401static void aio_grp_feed (aio_req grp)
402{
403 if (grp->sv2 && SvOK (grp->sv2))
107 { 404 {
108 nreqs--; 405 dSP;
109 406
110 if (req->type == REQ_QUIT) 407 ENTER;
111 started--; 408 SAVETMPS;
112 else 409 PUSHMARK (SP);
410 XPUSHs (req_sv (grp, aio_grp_stash));
411 PUTBACK;
412 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
413 SPAGAIN;
414 FREETMPS;
415 LEAVE;
416 }
417}
418
419static void req_submit (eio_req *req)
420{
421 eio_submit (req);
422
423 if (expect_false (on_next_submit))
424 {
425 dSP;
426 SV *cb = sv_2mortal (on_next_submit);
427
428 on_next_submit = 0;
429
430 PUSHMARK (SP);
431 PUTBACK;
432 call_sv (cb, G_DISCARD | G_EVAL);
433 }
434}
435
436static int req_invoke (eio_req *req)
437{
438 if (req->flags & FLAG_SV2_RO_OFF)
439 SvREADONLY_off (req->sv2);
440
441 if (!EIO_CANCELLED (req) && req->callback)
442 {
443 dSP;
444 static SV *sv_result_cache; /* caches the result integer SV */
445 SV *sv_result;
446
447 ENTER;
448 SAVETMPS;
449 PUSHMARK (SP);
450 EXTEND (SP, 1);
451
452 /* do not recreate the result IV from scratch each time */
453 if (expect_true (sv_result_cache))
113 { 454 {
114 int errorno = errno; 455 sv_result = sv_result_cache; sv_result_cache = 0;
115 errno = req->errorno; 456 SvIV_set (sv_result, req->result);
116 457 SvIOK_only (sv_result);
117 if (req->type == REQ_READ)
118 SvCUR_set (req->data, req->dataoffset
119 + req->result > 0 ? req->result : 0);
120
121 if (req->data)
122 SvREFCNT_dec (req->data);
123
124 if (req->fh)
125 SvREFCNT_dec (req->fh);
126
127 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
128 {
129 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
130 PL_laststatval = req->result;
131 PL_statcache = *(req->statdata);
132
133 Safefree (req->statdata);
134 }
135
136 ENTER;
137 PUSHMARK (SP);
138 XPUSHs (sv_2mortal (newSViv (req->result)));
139
140 if (req->type == REQ_OPEN)
141 {
142 /* convert fd to fh */
143 SV *fh;
144
145 PUTBACK;
146 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
147 SPAGAIN;
148
149 fh = SvREFCNT_inc (POPs);
150
151 PUSHMARK (SP);
152 XPUSHs (sv_2mortal (fh));
153 }
154
155 if (SvOK (req->callback))
156 {
157 PUTBACK;
158 call_sv (req->callback, G_VOID | G_EVAL);
159 SPAGAIN;
160 }
161
162 LEAVE;
163
164 if (req->callback)
165 SvREFCNT_dec (req->callback);
166
167 errno = errorno;
168 count++;
169 }
170
171 prv = req;
172 req = req->next;
173 Safefree (prv);
174
175 /* TODO: croak on errors? */
176 }
177
178 return count;
179}
180
181static void *aio_proc(void *arg);
182
183static void
184start_thread (void)
185{
186 sigset_t fullsigset, oldsigset;
187 pthread_t tid;
188 pthread_attr_t attr;
189
190 pthread_attr_init (&attr);
191 pthread_attr_setstacksize (&attr, STACKSIZE);
192 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
193
194 sigfillset (&fullsigset);
195 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
196
197 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
198 started++;
199
200 sigprocmask (SIG_SETMASK, &oldsigset, 0);
201}
202
203static void
204send_req (aio_req req)
205{
206 nreqs++;
207
208 pthread_mutex_lock (&reqlock);
209
210 req->next = 0;
211
212 if (reqe)
213 {
214 reqe->next = req;
215 reqe = req;
216 }
217 else
218 reqe = reqs = req;
219
220 pthread_cond_signal (&reqwait);
221 pthread_mutex_unlock (&reqlock);
222
223 while (nreqs > max_outstanding)
224 {
225 poll_wait ();
226 poll_cb ();
227 }
228}
229
230static void
231end_thread (void)
232{
233 aio_req req;
234 New (0, req, 1, aio_cb);
235 req->type = REQ_QUIT;
236
237 send_req (req);
238}
239
240/* work around various missing functions */
241
242#if !HAVE_PREADWRITE
243# define pread aio_pread
244# define pwrite aio_pwrite
245
246/*
247 * make our pread/pwrite safe against themselves, but not against
248 * normal read/write by using a mutex. slows down execution a lot,
249 * but that's your problem, not mine.
250 */
251static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
252
253static ssize_t
254pread (int fd, void *buf, size_t count, off_t offset)
255{
256 ssize_t res;
257 off_t ooffset;
258
259 pthread_mutex_lock (&iolock);
260 ooffset = lseek (fd, 0, SEEK_CUR);
261 lseek (fd, offset, SEEK_SET);
262 res = read (fd, buf, count);
263 lseek (fd, ooffset, SEEK_SET);
264 pthread_mutex_unlock (&iolock);
265
266 return res;
267}
268
269static ssize_t
270pwrite (int fd, void *buf, size_t count, off_t offset)
271{
272 ssize_t res;
273 off_t ooffset;
274
275 pthread_mutex_lock (&iolock);
276 ooffset = lseek (fd, 0, SEEK_CUR);
277 lseek (fd, offset, SEEK_SET);
278 res = write (fd, buf, count);
279 lseek (fd, offset, SEEK_SET);
280 pthread_mutex_unlock (&iolock);
281
282 return res;
283}
284#endif
285
286#if !HAVE_FDATASYNC
287# define fdatasync fsync
288#endif
289
290#if !HAVE_READAHEAD
291# define readahead aio_readahead
292
293static char readahead_buf[4096];
294
295static ssize_t
296readahead (int fd, off_t offset, size_t count)
297{
298 while (count > 0)
299 {
300 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
301
302 pread (fd, readahead_buf, len, offset);
303 offset += len;
304 count -= len;
305 }
306
307 errno = 0;
308}
309#endif
310
311static void *
312aio_proc (void *thr_arg)
313{
314 aio_req req;
315 int type;
316
317 do
318 {
319 pthread_mutex_lock (&reqlock);
320
321 for (;;)
322 {
323 req = reqs;
324
325 if (reqs)
326 {
327 reqs = reqs->next;
328 if (!reqs) reqe = 0;
329 }
330
331 if (req)
332 break;
333
334 pthread_cond_wait (&reqwait, &reqlock);
335 }
336
337 pthread_mutex_unlock (&reqlock);
338
339 errno = 0; /* strictly unnecessary */
340
341 type = req->type;
342
343 switch (type)
344 {
345 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
346 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
347
348 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
349
350 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
351 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
352 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
353
354 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
355 case REQ_CLOSE: req->result = close (req->fd); break;
356 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
357
358 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
359 case REQ_FSYNC: req->result = fsync (req->fd); break;
360
361 case REQ_QUIT:
362 break;
363
364 default:
365 req->result = ENOSYS;
366 break;
367 }
368
369 req->errorno = errno;
370
371 pthread_mutex_lock (&reslock);
372
373 req->next = 0;
374
375 if (rese)
376 {
377 rese->next = req;
378 rese = req;
379 } 458 }
380 else 459 else
381 { 460 {
382 rese = ress = req; 461 sv_result = newSViv (req->result);
383 462 SvREADONLY_on (sv_result);
384 /* write a dummy byte to the pipe so fh becomes ready */
385 write (respipe [1], &respipe, 1);
386 } 463 }
387 464
388 pthread_mutex_unlock (&reslock); 465 switch (req->type)
466 {
467 case EIO_WD_OPEN:
468 PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
469 break;
470
471 case EIO_READDIR:
472 {
473 SV *rv = &PL_sv_undef;
474
475 if (req->result >= 0)
476 {
477 int i;
478 char *names = (char *)req->ptr2;
479 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
480 AV *av = newAV ();
481
482 av_extend (av, req->result - 1);
483
484 for (i = 0; i < req->result; ++i)
485 {
486 if (req->int1 & EIO_READDIR_DENTS)
487 {
488 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
489
490 if (req->int1 & EIO_READDIR_CUSTOM2)
491 {
492 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
493 AV *avent = newAV ();
494
495 av_extend (avent, 2);
496
497 if (!sv_type [ent->type])
498 {
499 sv_type [ent->type] = newSViv (ent->type);
500 SvREADONLY_on (sv_type [ent->type]);
501 }
502
503 av_store (avent, 0, namesv);
504 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
505 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
506
507 av_store (av, i, newRV_noinc ((SV *)avent));
508 }
509 else
510 av_store (av, i, namesv);
511
512 ++ent;
513 }
514 else
515 {
516 SV *name = newSVpv (names, 0);
517 av_store (av, i, name);
518 names += SvCUR (name) + 1;
519 }
520 }
521
522 rv = sv_2mortal (newRV_noinc ((SV *)av));
523 }
524
525 PUSHs (rv);
526
527 if (req->int1 & EIO_READDIR_CUSTOM1)
528 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
529 }
530 break;
531
532 case EIO_OPEN:
533 {
534 /* convert fd to fh */
535 SV *fh = &PL_sv_undef;
536
537 if (req->result >= 0)
538 {
539 GV *gv = (GV *)sv_newmortal ();
540 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
541 char sym [64];
542 int symlen;
543
544 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
545 gv_init (gv, aio_stash, sym, symlen, 0);
546
547 symlen = snprintf (
548 sym,
549 sizeof (sym),
550 "%s&=%d",
551 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
552 (int)req->result
553 );
554
555 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
556 fh = (SV *)gv;
557 }
558
559 PUSHs (fh);
560 }
561 break;
562
563 case EIO_STATVFS:
564 case EIO_FSTATVFS:
565 {
566 SV *rv = &PL_sv_undef;
567
568#ifndef _WIN32
569 if (req->result >= 0)
570 {
571 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
572 HV *hv = newHV ();
573
574 rv = sv_2mortal (newRV_noinc ((SV *)hv));
575
576 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
577 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
578 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
579 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
580 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
581 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
582 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
583 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
584 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
585 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
586 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
587 }
588#endif
589
590 PUSHs (rv);
591 }
592
593 break;
594
595 case EIO_GROUP:
596 req->int1 = 2; /* mark group as finished */
597
598 if (req->sv1)
599 {
600 int i;
601 AV *av = (AV *)req->sv1;
602
603 EXTEND (SP, AvFILL (av) + 1);
604 for (i = 0; i <= AvFILL (av); ++i)
605 PUSHs (*av_fetch (av, i, 0));
606 }
607 break;
608
609 case EIO_NOP:
610 case EIO_BUSY:
611 break;
612
613 case EIO_READLINK:
614 case EIO_REALPATH:
615 if (req->result > 0)
616 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
617 break;
618
619 case EIO_STAT:
620 case EIO_LSTAT:
621 case EIO_FSTAT:
622 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
623 PL_laststatval = req->result;
624 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
625 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
626 PUSHs (sv_result);
627 break;
628
629 case EIO_READ:
630 {
631 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
632 *SvEND (req->sv2) = 0;
633 SvPOK_only (req->sv2);
634 SvSETMAGIC (req->sv2);
635 PUSHs (sv_result);
636 }
637 break;
638
639 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
640 if (req->result > 0)
641 SvIV_set (sv_result, 0);
642 /* FALLTHROUGH */
643
644 default:
645 PUSHs (sv_result);
646 break;
647 }
648
649 errno = req->errorno;
650
651 PUTBACK;
652 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
653 SPAGAIN;
654
655 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
656 SvREFCNT_dec (sv_result);
657 else
658 sv_result_cache = sv_result;
659
660 FREETMPS;
661 LEAVE;
662
663 PUTBACK;
389 } 664 }
390 while (type != REQ_QUIT); 665
666 return !!SvTRUE (ERRSV);
667}
668
669static void req_destroy (aio_req req)
670{
671 if (req->self)
672 {
673 sv_unmagic (req->self, PERL_MAGIC_ext);
674 SvREFCNT_dec (req->self);
675 }
676
677 SvREFCNT_dec (req->sv1);
678 SvREFCNT_dec (req->sv2);
679 SvREFCNT_dec (req->sv3);
680 SvREFCNT_dec (req->sv4);
681 SvREFCNT_dec (req->callback);
682
683 Safefree (req);
684}
685
686static void req_cancel_subs (aio_req grp)
687{
688 if (grp->type != EIO_GROUP)
689 return;
690
691 SvREFCNT_dec (grp->sv2);
692 grp->sv2 = 0;
693
694 eio_grp_cancel (grp);
695}
696
697static void create_respipe (void)
698{
699 if (s_epipe_renew (&respipe))
700 croak ("IO::AIO: unable to initialize result pipe");
701}
702
703static void poll_wait (void)
704{
705 while (eio_nreqs ())
706 {
707 int size;
708
709 X_LOCK (reslock);
710 size = res_queue.size;
711 X_UNLOCK (reslock);
712
713 if (size)
714 return;
715
716 etp_maybe_start_thread ();
717
718 s_epipe_wait (&respipe);
719 }
720}
721
722static int poll_cb (void)
723{
724 for (;;)
725 {
726 int res = eio_poll ();
727
728 if (res > 0)
729 croak (0);
730
731 if (!max_outstanding || max_outstanding > eio_nreqs ())
732 return res;
733
734 poll_wait ();
735 }
736}
737
738static void ecb_cold
739reinit (void)
740{
741 create_respipe ();
742
743 if (eio_init (want_poll, done_poll) < 0)
744 croak ("IO::AIO: unable to initialise eio library");
745}
746
747/*****************************************************************************/
748
749#if !_POSIX_MAPPED_FILES
750# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
751# define munmap(addr,length) (errno = ENOSYS, -1)
752#endif
753
754#if !_POSIX_MEMORY_PROTECTION
755# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
756# define PROT_NONE 0
757# define PROT_WRITE 0
758# define MAP_PRIVATE 0
759# define MAP_SHARED 0
760# define MAP_FIXED 0
761#endif
762
763#define MMAP_MAGIC PERL_MAGIC_ext
764
765static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
766{
767 int old_errno = errno;
768 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
769 errno = old_errno;
770
771 mg->mg_obj = 0; /* just in case */
772
773 SvREADONLY_off (sv);
774
775 if (SvPVX (sv) != mg->mg_ptr)
776 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
777
778 SvCUR_set (sv, 0);
779 SvPVX (sv) = 0;
780 SvOK_off (sv);
391 781
392 return 0; 782 return 0;
393} 783}
394 784
785static MGVTBL mmap_vtbl = {
786 0, 0, 0, 0, mmap_free
787};
788
789/*****************************************************************************/
790
791static SV * get_cb (SV *cb_sv)
792{
793 SvGETMAGIC (cb_sv);
794 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
795}
796
797#define dREQ \
798 SV *cb_cv; \
799 aio_req req; \
800 int req_pri = next_pri; \
801 next_pri = EIO_PRI_DEFAULT; \
802 \
803 cb_cv = get_cb (callback); \
804 \
805 Newz (0, req, 1, eio_req); \
806 if (!req) \
807 croak ("out of memory during eio_req allocation"); \
808 \
809 req->callback = SvREFCNT_inc (cb_cv); \
810 req->pri = req_pri
811
812#define REQ_SEND \
813 PUTBACK; \
814 req_submit (req); \
815 SPAGAIN; \
816 \
817 if (GIMME_V != G_VOID) \
818 XPUSHs (req_sv (req, aio_req_stash));
819
820static void
821req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
822{
823 if (SvROK (path))
824 {
825 AV *av = (AV *)SvRV (path);
826 SV *wdob;
827
828 if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
829 croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
830
831 path = AvARRAY (av)[1];
832 wdob = AvARRAY (av)[0];
833
834 if (SvOK (wdob))
835 {
836 *wd = SvAIO_WD (wdob);
837 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
838 }
839 else
840 *wd = EIO_INVALID_WD;
841 }
842
843 *pathsv = newSVsv (path);
844 *ptr = SvPVbyte_nolen (*pathsv);
845}
846
847static void
848req_set_path1 (aio_req req, SV *path)
849{
850 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
851}
852
853static void
854req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
855{
856 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
857
858 switch (SvTYPE (rv))
859 {
860 case SVt_PVIO:
861 case SVt_PVLV:
862 case SVt_PVGV:
863 req->type = type_fh;
864 req->sv1 = newSVsv (fh_or_path);
865 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
866 break;
867
868 default:
869 req->type = type_path;
870 req_set_path1 (req, fh_or_path);
871 break;
872 }
873
874}
875
395MODULE = IO::AIO PACKAGE = IO::AIO 876MODULE = IO::AIO PACKAGE = IO::AIO
396 877
397PROTOTYPES: ENABLE 878PROTOTYPES: ENABLE
398 879
399BOOT: 880BOOT:
400{ 881{
401 if (pipe (respipe)) 882 static const struct {
402 croak ("unable to initialize result pipe"); 883 const char *name;
884 IV iv;
885 } *civ, const_iv[] = {
886# define const_niv(name, value) { # name, (IV) value },
887# define const_iv(name) { # name, (IV) name },
888# define const_eio(name) { # name, (IV) EIO_ ## name },
889 const_iv (EXDEV)
890 const_iv (ENOSYS)
891 const_iv (O_RDONLY)
892 const_iv (O_WRONLY)
893 const_iv (O_RDWR)
894 const_iv (O_CREAT)
895 const_iv (O_TRUNC)
896 const_iv (O_EXCL)
897 const_iv (O_APPEND)
403 898
404 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 899 const_iv (O_ASYNC)
405 croak ("cannot set result pipe to nonblocking mode"); 900 const_iv (O_DIRECT)
901 const_iv (O_NOATIME)
406 902
407 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 903 const_iv (O_CLOEXEC)
408 croak ("cannot set result pipe to nonblocking mode"); 904 const_iv (O_NOCTTY)
409} 905 const_iv (O_NOFOLLOW)
906 const_iv (O_NONBLOCK)
907 const_iv (O_EXEC)
908 const_iv (O_SEARCH)
909 const_iv (O_DIRECTORY)
910 const_iv (O_DSYNC)
911 const_iv (O_RSYNC)
912 const_iv (O_SYNC)
913 const_iv (O_TTY_INIT)
410 914
915 const_iv (S_IFIFO)
916 const_iv (S_IFCHR)
917 const_iv (S_IFBLK)
918 const_iv (S_IFLNK)
919 const_iv (S_IFREG)
920 const_iv (S_IFDIR)
921 const_iv (S_IFWHT)
922 const_iv (S_IFSOCK)
923 const_iv (S_IFMT)
924
925 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
926 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
927 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
928 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
929 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
930 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
931
932 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
933 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
934 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
935 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
936 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
937
938 const_iv (ST_RDONLY)
939 const_iv (ST_NOSUID)
940 const_iv (ST_NODEV)
941 const_iv (ST_NOEXEC)
942 const_iv (ST_SYNCHRONOUS)
943 const_iv (ST_MANDLOCK)
944 const_iv (ST_WRITE)
945 const_iv (ST_APPEND)
946 const_iv (ST_IMMUTABLE)
947 const_iv (ST_NOATIME)
948 const_iv (ST_NODIRATIME)
949 const_iv (ST_RELATIME)
950
951 const_iv (PROT_NONE)
952 const_iv (PROT_EXEC)
953 const_iv (PROT_READ)
954 const_iv (PROT_WRITE)
955
956 /*const_iv (MAP_FIXED)*/
957 const_iv (MAP_PRIVATE)
958 const_iv (MAP_SHARED)
959 const_iv (MAP_ANONYMOUS)
960
961 /* linuxish */
962 const_iv (MAP_HUGETLB)
963 const_iv (MAP_LOCKED)
964 const_iv (MAP_NORESERVE)
965 const_iv (MAP_POPULATE)
966 const_iv (MAP_NONBLOCK)
967
968 const_eio (MCL_FUTURE)
969 const_eio (MCL_CURRENT)
970
971 const_eio (MS_ASYNC)
972 const_eio (MS_INVALIDATE)
973 const_eio (MS_SYNC)
974
975 const_eio (MT_MODIFY)
976
977 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
978 const_eio (SYNC_FILE_RANGE_WRITE)
979 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
980
981 const_eio (FALLOC_FL_KEEP_SIZE)
982
983 const_eio (READDIR_DENTS)
984 const_eio (READDIR_DIRS_FIRST)
985 const_eio (READDIR_STAT_ORDER)
986 const_eio (READDIR_FOUND_UNKNOWN)
987
988 const_eio (DT_UNKNOWN)
989 const_eio (DT_FIFO)
990 const_eio (DT_CHR)
991 const_eio (DT_DIR)
992 const_eio (DT_BLK)
993 const_eio (DT_REG)
994 const_eio (DT_LNK)
995 const_eio (DT_SOCK)
996 const_eio (DT_WHT)
997 };
998
999 aio_stash = gv_stashpv ("IO::AIO" , 1);
1000 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1001 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1002 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1003
1004 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1005 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1006
1007 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1008
1009 reinit ();
1010}
1011
411void 1012void
412min_parallel(nthreads) 1013reinit ()
413 int nthreads 1014 PROTOTYPE:
1015
1016void
1017max_poll_reqs (unsigned int nreqs)
414 PROTOTYPE: $ 1018 PROTOTYPE: $
415 CODE: 1019 CODE:
416 while (nthreads > started) 1020 eio_set_max_poll_reqs (nreqs);
417 start_thread ();
418 1021
419void 1022void
420max_parallel(nthreads) 1023max_poll_time (double nseconds)
421 int nthreads
422 PROTOTYPE: $ 1024 PROTOTYPE: $
423 CODE: 1025 CODE:
1026 eio_set_max_poll_time (nseconds);
1027
1028void
1029min_parallel (unsigned int nthreads)
1030 PROTOTYPE: $
1031 CODE:
1032 eio_set_min_parallel (nthreads);
1033
1034void
1035max_parallel (unsigned int nthreads)
1036 PROTOTYPE: $
1037 CODE:
1038 eio_set_max_parallel (nthreads);
1039
1040void
1041max_idle (unsigned int nthreads)
1042 PROTOTYPE: $
1043 CODE:
1044 eio_set_max_idle (nthreads);
1045
1046void
1047idle_timeout (unsigned int seconds)
1048 PROTOTYPE: $
1049 CODE:
1050 eio_set_idle_timeout (seconds);
1051
1052void
1053max_outstanding (unsigned int maxreqs)
1054 PROTOTYPE: $
1055 CODE:
1056 max_outstanding = maxreqs;
1057
1058void
1059aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1060 PPCODE:
424{ 1061{
425 int cur = started; 1062 dREQ;
426 while (cur > nthreads) 1063
427 { 1064 req->type = EIO_WD_OPEN;
428 end_thread (); 1065 req_set_path1 (req, pathname);
1066
1067 REQ_SEND;
1068}
1069
1070void
1071aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1072 PPCODE:
1073{
1074 dREQ;
1075
1076 req->type = EIO_OPEN;
1077 req_set_path1 (req, pathname);
1078 req->int1 = flags;
1079 req->int2 = mode;
1080
1081 REQ_SEND;
1082}
1083
1084void
1085aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1086 ALIAS:
1087 aio_fsync = EIO_FSYNC
1088 aio_fdatasync = EIO_FDATASYNC
1089 aio_syncfs = EIO_SYNCFS
1090 PPCODE:
1091{
1092 int fd = s_fileno_croak (fh, 0);
1093 dREQ;
1094
1095 req->type = ix;
1096 req->sv1 = newSVsv (fh);
1097 req->int1 = fd;
1098
1099 REQ_SEND (req);
1100}
1101
1102void
1103aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1104 PPCODE:
1105{
1106 int fd = s_fileno_croak (fh, 0);
1107 dREQ;
1108
1109 req->type = EIO_SYNC_FILE_RANGE;
1110 req->sv1 = newSVsv (fh);
1111 req->int1 = fd;
1112 req->offs = offset;
1113 req->size = nbytes;
1114 req->int2 = flags;
1115
1116 REQ_SEND (req);
1117}
1118
1119void
1120aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1121 PPCODE:
1122{
1123 int fd = s_fileno_croak (fh, 0);
1124 dREQ;
1125
1126 req->type = EIO_FALLOCATE;
1127 req->sv1 = newSVsv (fh);
1128 req->int1 = fd;
1129 req->int2 = mode;
1130 req->offs = offset;
1131 req->size = len;
1132
1133 REQ_SEND (req);
1134}
1135
1136void
1137aio_close (SV *fh, SV *callback=&PL_sv_undef)
1138 PPCODE:
1139{
1140 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1141 int fd = s_fileno_croak (fh, 0);
1142 dREQ;
1143
1144 if (expect_false (close_fd < 0))
1145 {
1146 int pipefd [2];
1147
1148 if (
1149#ifdef _WIN32
1150 _pipe (pipefd, 1, _O_BINARY) < 0
1151#else
1152 pipe (pipefd) < 0
1153 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1154#endif
1155 || close (pipefd [1]) < 0
429 cur--; 1156 )
1157 abort (); /*D*/
1158
1159 close_fd = pipefd [0];
430 } 1160 }
431 1161
432 while (started > nthreads) 1162 req->type = EIO_DUP2;
1163 req->int1 = close_fd;
1164 req->sv2 = newSVsv (fh);
1165 req->int2 = fd;
1166
1167 REQ_SEND (req);
1168}
1169
1170void
1171aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1172 ALIAS:
1173 aio_read = EIO_READ
1174 aio_write = EIO_WRITE
1175 PPCODE:
1176{
1177 STRLEN svlen;
1178 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1179 char *svptr = SvPVbyte (data, svlen);
1180 UV len = SvUV (length);
1181
1182 if (dataoffset < 0)
1183 dataoffset += svlen;
1184
1185 if (dataoffset < 0 || dataoffset > svlen)
1186 croak ("dataoffset outside of data scalar");
1187
1188 if (ix == EIO_WRITE)
1189 {
1190 /* write: check length and adjust. */
1191 if (!SvOK (length) || len + dataoffset > svlen)
1192 len = svlen - dataoffset;
1193 }
1194 else
1195 {
1196 /* read: check type and grow scalar as necessary */
1197 SvUPGRADE (data, SVt_PV);
1198 svptr = SvGROW (data, len + dataoffset + 1);
1199 }
1200
1201 {
1202 dREQ;
1203
1204 req->type = ix;
1205 req->sv1 = newSVsv (fh);
1206 req->int1 = fd;
1207 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1208 req->size = len;
1209 req->sv2 = SvREFCNT_inc (data);
1210 req->ptr2 = (char *)svptr + dataoffset;
1211 req->stroffset = dataoffset;
1212
1213 if (!SvREADONLY (data))
1214 {
1215 SvREADONLY_on (data);
1216 req->flags |= FLAG_SV2_RO_OFF;
1217 }
1218
1219 REQ_SEND;
1220 }
1221}
1222
1223void
1224aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1225 ALIAS:
1226 aio_readlink = EIO_READLINK
1227 aio_realpath = EIO_REALPATH
1228 PPCODE:
1229{
1230 dREQ;
1231
1232 req->type = ix;
1233 req_set_path1 (req, pathname);
1234
1235 REQ_SEND;
1236}
1237
1238void
1239aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1240 PPCODE:
1241{
1242 int ifd = s_fileno_croak (in_fh , 0);
1243 int ofd = s_fileno_croak (out_fh, 1);
1244 dREQ;
1245
1246 req->type = EIO_SENDFILE;
1247 req->sv1 = newSVsv (out_fh);
1248 req->int1 = ofd;
1249 req->sv2 = newSVsv (in_fh);
1250 req->int2 = ifd;
1251 req->offs = in_offset;
1252 req->size = length;
1253
1254 REQ_SEND;
1255}
1256
1257void
1258aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1259 PPCODE:
1260{
1261 int fd = s_fileno_croak (fh, 0);
1262 dREQ;
1263
1264 req->type = EIO_READAHEAD;
1265 req->sv1 = newSVsv (fh);
1266 req->int1 = fd;
1267 req->offs = offset;
1268 req->size = length;
1269
1270 REQ_SEND;
1271}
1272
1273void
1274aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1275 ALIAS:
1276 aio_stat = EIO_STAT
1277 aio_lstat = EIO_LSTAT
1278 aio_statvfs = EIO_STATVFS
1279 PPCODE:
1280{
1281 dREQ;
1282
1283 req->sv1 = newSVsv (fh_or_path);
1284 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1285 REQ_SEND;
1286}
1287
1288UV
1289major (UV dev)
1290 ALIAS:
1291 minor = 1
1292 CODE:
1293 RETVAL = ix ? major (dev) : minor (dev);
1294 OUTPUT:
1295 RETVAL
1296
1297UV
1298makedev (UV maj, UV min)
1299 CODE:
1300 RETVAL = makedev (maj, min);
1301 OUTPUT:
1302 RETVAL
1303
1304void
1305aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1306 PPCODE:
1307{
1308 dREQ;
1309
1310 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1311 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1312 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1313
1314 REQ_SEND;
1315}
1316
1317void
1318aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1319 PPCODE:
1320{
1321 dREQ;
1322
1323 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1324 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1325
1326 REQ_SEND;
1327}
1328
1329void
1330aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1331 ALIAS:
1332 aio_chmod = EIO_CHMOD
1333 aio_mkdir = EIO_MKDIR
1334 PPCODE:
1335{
1336 dREQ;
1337
1338 req->int2 = mode;
1339 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1340
1341 REQ_SEND;
1342}
1343
1344void
1345aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1346 PPCODE:
1347{
1348 dREQ;
1349
1350 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1351 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1352 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1353
1354 REQ_SEND;
1355}
1356
1357void
1358aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1359 PPCODE:
1360{
1361 dREQ;
1362
1363 req->type = EIO_READDIR;
1364 req->sv1 = newSVsv (pathname);
1365 req->ptr1 = SvPVbyte_nolen (req->sv1);
1366 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1367
1368 if (flags & EIO_READDIR_DENTS)
1369 req->int1 |= EIO_READDIR_CUSTOM2;
1370
1371 REQ_SEND;
1372}
1373
1374void
1375aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1376 ALIAS:
1377 aio_unlink = EIO_UNLINK
1378 aio_rmdir = EIO_RMDIR
1379 aio_readdir = EIO_READDIR
1380 PPCODE:
1381{
1382 dREQ;
1383
1384 req->type = ix;
1385 req_set_path1 (req, pathname);
1386
1387 REQ_SEND;
1388}
1389
1390void
1391aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1392 ALIAS:
1393 aio_link = EIO_LINK
1394 aio_symlink = EIO_SYMLINK
1395 aio_rename = EIO_RENAME
1396 PPCODE:
1397{
1398 dREQ;
1399 eio_wd wd2;
1400
1401 req->type = ix;
1402 req_set_path1 (req, oldpath);
1403 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1404 req->int3 = (long)wd2;
1405
1406 REQ_SEND;
1407}
1408
1409void
1410aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1411 PPCODE:
1412{
1413 dREQ;
1414
1415 req->type = EIO_MKNOD;
1416 req->int2 = (mode_t)mode;
1417 req->offs = dev;
1418 req_set_path1 (req, pathname);
1419
1420 REQ_SEND;
1421}
1422
1423void
1424aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1425 ALIAS:
1426 aio_mtouch = EIO_MTOUCH
1427 aio_msync = EIO_MSYNC
1428 PPCODE:
1429{
1430 STRLEN svlen;
1431 char *svptr = SvPVbyte (data, svlen);
1432 UV len = SvUV (length);
1433
1434 if (offset < 0)
1435 offset += svlen;
1436
1437 if (offset < 0 || offset > svlen)
1438 croak ("offset outside of scalar");
1439
1440 if (!SvOK (length) || len + offset > svlen)
1441 len = svlen - offset;
1442
1443 {
1444 dREQ;
1445
1446 req->type = ix;
1447 req->sv2 = SvREFCNT_inc (data);
1448 req->ptr2 = (char *)svptr + offset;
1449 req->size = len;
1450 req->int1 = flags;
1451
1452 REQ_SEND;
1453 }
1454}
1455
1456void
1457aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1458 PPCODE:
1459{
1460 STRLEN svlen;
1461 char *svptr = SvPVbyte (data, svlen);
1462 UV len = SvUV (length);
1463
1464 if (offset < 0)
1465 offset += svlen;
1466
1467 if (offset < 0 || offset > svlen)
1468 croak ("offset outside of scalar");
1469
1470 if (!SvOK (length) || len + offset > svlen)
1471 len = svlen - offset;
1472
1473 {
1474 dREQ;
1475
1476 req->type = EIO_MLOCK;
1477 req->sv2 = SvREFCNT_inc (data);
1478 req->ptr2 = (char *)svptr + offset;
1479 req->size = len;
1480
1481 REQ_SEND;
1482 }
1483}
1484
1485void
1486aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1487 PPCODE:
1488{
1489 dREQ;
1490
1491 req->type = EIO_MLOCKALL;
1492 req->int1 = flags;
1493
1494 REQ_SEND;
1495}
1496
1497void
1498aio_busy (double delay, SV *callback=&PL_sv_undef)
1499 PPCODE:
1500{
1501 dREQ;
1502
1503 req->type = EIO_BUSY;
1504 req->nv1 = delay < 0. ? 0. : delay;
1505
1506 REQ_SEND;
1507}
1508
1509void
1510aio_group (SV *callback=&PL_sv_undef)
1511 PPCODE:
1512{
1513 dREQ;
1514
1515 req->type = EIO_GROUP;
1516
1517 req_submit (req);
1518 XPUSHs (req_sv (req, aio_grp_stash));
1519}
1520
1521void
1522aio_nop (SV *callback=&PL_sv_undef)
1523 ALIAS:
1524 aio_nop = EIO_NOP
1525 aio_sync = EIO_SYNC
1526 PPCODE:
1527{
1528 dREQ;
1529
1530 req->type = ix;
1531
1532 REQ_SEND;
1533}
1534
1535int
1536aioreq_pri (int pri = 0)
1537 CODE:
1538 RETVAL = next_pri;
1539 if (items > 0)
1540 {
1541 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1542 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1543 next_pri = pri;
1544 }
1545 OUTPUT:
1546 RETVAL
1547
1548void
1549aioreq_nice (int nice = 0)
1550 CODE:
1551 nice = next_pri - nice;
1552 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1553 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1554 next_pri = nice;
1555
1556void
1557flush ()
1558 CODE:
1559 while (eio_nreqs ())
433 { 1560 {
434 poll_wait (); 1561 poll_wait ();
435 poll_cb (); 1562 poll_cb ();
436 } 1563 }
437}
438 1564
439int 1565int
440max_outstanding(nreqs)
441 int nreqs
442 PROTOTYPE: $
443 CODE:
444 RETVAL = max_outstanding;
445 max_outstanding = nreqs;
446
447void
448aio_open(pathname,flags,mode,callback=&PL_sv_undef)
449 SV * pathname
450 int flags
451 int mode
452 SV * callback
453 PROTOTYPE: $$$;$
454 CODE:
455{
456 aio_req req;
457
458 Newz (0, req, 1, aio_cb);
459
460 if (!req)
461 croak ("out of memory during aio_req allocation");
462
463 req->type = REQ_OPEN;
464 req->data = newSVsv (pathname);
465 req->dataptr = SvPV_nolen (req->data);
466 req->fd = flags;
467 req->mode = mode;
468 req->callback = SvREFCNT_inc (callback);
469
470 send_req (req);
471}
472
473void
474aio_close(fh,callback=&PL_sv_undef)
475 SV * fh
476 SV * callback
477 PROTOTYPE: $;$
478 ALIAS:
479 aio_close = REQ_CLOSE
480 aio_fsync = REQ_FSYNC
481 aio_fdatasync = REQ_FDATASYNC
482 CODE:
483{
484 aio_req req;
485
486 Newz (0, req, 1, aio_cb);
487
488 if (!req)
489 croak ("out of memory during aio_req allocation");
490
491 req->type = ix;
492 req->fh = newSVsv (fh);
493 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
494 req->callback = SvREFCNT_inc (callback);
495
496 send_req (req);
497}
498
499void
500aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
501 SV * fh
502 UV offset
503 IV length
504 SV * data
505 IV dataoffset
506 SV * callback
507 ALIAS:
508 aio_read = REQ_READ
509 aio_write = REQ_WRITE
510 PROTOTYPE: $$$$$;$
511 CODE:
512{
513 aio_req req;
514 STRLEN svlen;
515 char *svptr = SvPV (data, svlen);
516
517 SvUPGRADE (data, SVt_PV);
518 SvPOK_on (data);
519
520 if (dataoffset < 0)
521 dataoffset += svlen;
522
523 if (dataoffset < 0 || dataoffset > svlen)
524 croak ("data offset outside of string");
525
526 if (ix == REQ_WRITE)
527 {
528 /* write: check length and adjust. */
529 if (length < 0 || length + dataoffset > svlen)
530 length = svlen - dataoffset;
531 }
532 else
533 {
534 /* read: grow scalar as necessary */
535 svptr = SvGROW (data, length + dataoffset);
536 }
537
538 if (length < 0)
539 croak ("length must not be negative");
540
541 Newz (0, req, 1, aio_cb);
542
543 if (!req)
544 croak ("out of memory during aio_req allocation");
545
546 req->type = ix;
547 req->fh = newSVsv (fh);
548 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
549 : IoOFP (sv_2io (fh)));
550 req->offset = offset;
551 req->length = length;
552 req->data = SvREFCNT_inc (data);
553 req->dataptr = (char *)svptr + dataoffset;
554 req->callback = SvREFCNT_inc (callback);
555
556 send_req (req);
557}
558
559void
560aio_readahead(fh,offset,length,callback=&PL_sv_undef)
561 SV * fh
562 UV offset
563 IV length
564 SV * callback
565 PROTOTYPE: $$$;$
566 CODE:
567{
568 aio_req req;
569
570 if (length < 0)
571 croak ("length must not be negative");
572
573 Newz (0, req, 1, aio_cb);
574
575 if (!req)
576 croak ("out of memory during aio_req allocation");
577
578 req->type = REQ_READAHEAD;
579 req->fh = newSVsv (fh);
580 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
581 req->offset = offset;
582 req->length = length;
583 req->callback = SvREFCNT_inc (callback);
584
585 send_req (req);
586}
587
588void
589aio_stat(fh_or_path,callback=&PL_sv_undef)
590 SV * fh_or_path
591 SV * callback
592 ALIAS:
593 aio_stat = REQ_STAT
594 aio_lstat = REQ_LSTAT
595 CODE:
596{
597 aio_req req;
598
599 Newz (0, req, 1, aio_cb);
600
601 if (!req)
602 croak ("out of memory during aio_req allocation");
603
604 New (0, req->statdata, 1, Stat_t);
605
606 if (!req->statdata)
607 croak ("out of memory during aio_req->statdata allocation");
608
609 if (SvPOK (fh_or_path))
610 {
611 req->type = ix;
612 req->data = newSVsv (fh_or_path);
613 req->dataptr = SvPV_nolen (req->data);
614 }
615 else
616 {
617 req->type = REQ_FSTAT;
618 req->fh = newSVsv (fh_or_path);
619 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
620 }
621
622 req->callback = SvREFCNT_inc (callback);
623
624 send_req (req);
625}
626
627void
628aio_unlink(pathname,callback=&PL_sv_undef)
629 SV * pathname
630 SV * callback
631 CODE:
632{
633 aio_req req;
634
635 Newz (0, req, 1, aio_cb);
636
637 if (!req)
638 croak ("out of memory during aio_req allocation");
639
640 req->type = REQ_UNLINK;
641 req->data = newSVsv (pathname);
642 req->dataptr = SvPV_nolen (req->data);
643 req->callback = SvREFCNT_inc (callback);
644
645 send_req (req);
646}
647
648void
649flush()
650 PROTOTYPE:
651 CODE:
652 while (nreqs)
653 {
654 poll_wait ();
655 poll_cb ();
656 }
657
658void
659poll() 1566poll ()
660 PROTOTYPE:
661 CODE: 1567 CODE:
662 if (nreqs)
663 {
664 poll_wait (); 1568 poll_wait ();
665 poll_cb ();
666 }
667
668int
669poll_fileno()
670 PROTOTYPE:
671 CODE:
672 RETVAL = respipe [0];
673 OUTPUT:
674 RETVAL
675
676int
677poll_cb(...)
678 PROTOTYPE:
679 CODE:
680 RETVAL = poll_cb (); 1569 RETVAL = poll_cb ();
681 OUTPUT: 1570 OUTPUT:
682 RETVAL 1571 RETVAL
683 1572
684void
685poll_wait()
686 PROTOTYPE:
687 CODE:
688 if (nreqs)
689 poll_wait ();
690
691int 1573int
692nreqs() 1574poll_fileno ()
693 PROTOTYPE:
694 CODE: 1575 CODE:
695 RETVAL = nreqs; 1576 RETVAL = s_epipe_fd (&respipe);
696 OUTPUT: 1577 OUTPUT:
697 RETVAL 1578 RETVAL
698 1579
1580int
1581poll_cb (...)
1582 PROTOTYPE:
1583 CODE:
1584 RETVAL = poll_cb ();
1585 OUTPUT:
1586 RETVAL
1587
1588void
1589poll_wait ()
1590 CODE:
1591 poll_wait ();
1592
1593int
1594nreqs ()
1595 CODE:
1596 RETVAL = eio_nreqs ();
1597 OUTPUT:
1598 RETVAL
1599
1600int
1601nready ()
1602 CODE:
1603 RETVAL = eio_nready ();
1604 OUTPUT:
1605 RETVAL
1606
1607int
1608npending ()
1609 CODE:
1610 RETVAL = eio_npending ();
1611 OUTPUT:
1612 RETVAL
1613
1614int
1615nthreads ()
1616 CODE:
1617 RETVAL = eio_nthreads ();
1618 OUTPUT:
1619 RETVAL
1620
1621int
1622fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1623 CODE:
1624 RETVAL = posix_fadvise (fh, offset, length, advice);
1625 OUTPUT:
1626 RETVAL
1627
1628IV
1629sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1630 CODE:
1631 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1632 OUTPUT:
1633 RETVAL
1634
1635void
1636mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1637 PPCODE:
1638 sv_unmagic (scalar, MMAP_MAGIC);
1639{
1640 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1641 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1642 if (addr == (void *)-1)
1643 XSRETURN_NO;
1644
1645 sv_force_normal (scalar);
1646
1647 /* we store the length in mg_obj, as namlen is I32 :/ */
1648 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1649 ->mg_obj = (SV *)length;
1650
1651 SvUPGRADE (scalar, SVt_PV); /* nop... */
1652
1653 if (!(prot & PROT_WRITE))
1654 SvREADONLY_on (scalar);
1655
1656 if (SvLEN (scalar))
1657 Safefree (SvPVX (scalar));
1658
1659 SvPVX (scalar) = (char *)addr;
1660 SvCUR_set (scalar, length);
1661 SvLEN_set (scalar, 0);
1662 SvPOK_only (scalar);
1663
1664 XSRETURN_YES;
1665}
1666
1667void
1668munmap (SV *scalar)
1669 CODE:
1670 sv_unmagic (scalar, MMAP_MAGIC);
1671
1672int
1673madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1674 ALIAS:
1675 mprotect = 1
1676 CODE:
1677{
1678 STRLEN svlen;
1679 void *addr = SvPVbyte (scalar, svlen);
1680 size_t len = SvUV (length);
1681
1682 if (offset < 0)
1683 offset += svlen;
1684
1685 if (offset < 0 || offset > svlen)
1686 croak ("offset outside of scalar");
1687
1688 if (!SvOK (length) || len + offset > svlen)
1689 len = svlen - offset;
1690
1691 addr = (void *)(((intptr_t)addr) + offset);
1692 eio_page_align (&addr, &len);
1693
1694 switch (ix)
1695 {
1696 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1697 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1698 }
1699}
1700 OUTPUT:
1701 RETVAL
1702
1703int
1704munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1705 CODE:
1706{
1707 STRLEN svlen;
1708 void *addr = SvPVbyte (scalar, svlen);
1709 size_t len = SvUV (length);
1710
1711 if (offset < 0)
1712 offset += svlen;
1713
1714 if (offset < 0 || offset > svlen)
1715 croak ("offset outside of scalar");
1716
1717 if (!SvOK (length) || len + offset > svlen)
1718 len = svlen - offset;
1719
1720 addr = (void *)(((intptr_t)addr) + offset);
1721 eio_page_align (&addr, &len);
1722#if _POSIX_MEMLOCK_RANGE
1723 RETVAL = munlock (addr, len);
1724#else
1725 RETVAL = ((errno = ENOSYS), -1);
1726#endif
1727}
1728 OUTPUT:
1729 RETVAL
1730
1731int
1732munlockall ()
1733 CODE:
1734#if _POSIX_MEMLOCK
1735 munlockall ();
1736#else
1737 RETVAL = -1;
1738 errno = ENOSYS;
1739#endif
1740 OUTPUT:
1741 RETVAL
1742
1743void _on_next_submit (SV *cb)
1744 CODE:
1745 SvREFCNT_dec (on_next_submit);
1746 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1747
1748PROTOTYPES: DISABLE
1749
1750MODULE = IO::AIO PACKAGE = IO::AIO::WD
1751
1752BOOT:
1753{
1754 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1755 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1756}
1757
1758void
1759DESTROY (SV *self)
1760 CODE:
1761{
1762 aio_wd wd = SvAIO_WD (self);
1763#if HAVE_AT
1764 SV *callback = &PL_sv_undef;
1765 dREQ; /* clobbers next_pri :/ */
1766 req->type = EIO_WD_CLOSE;
1767 req->wd = wd;
1768 REQ_SEND;
1769#else
1770 eio_wd_close_sync (wd);
1771#endif
1772}
1773
1774MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1775
1776void
1777cancel (aio_req_ornot req)
1778 CODE:
1779 eio_cancel (req);
1780
1781void
1782cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1783 PPCODE:
1784{
1785 if (GIMME_V != G_VOID)
1786 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1787
1788 if (items > 1)
1789 {
1790 SV *cb_cv =get_cb (callback);
1791
1792 SvREFCNT_dec (req->callback);
1793 req->callback = SvREFCNT_inc (cb_cv);
1794 }
1795}
1796
1797MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1798
1799void
1800add (aio_req grp, ...)
1801 PPCODE:
1802{
1803 int i;
1804
1805 if (grp->int1 == 2)
1806 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1807
1808 for (i = 1; i < items; ++i )
1809 {
1810 aio_req req;
1811
1812 if (GIMME_V != G_VOID)
1813 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1814
1815 req = SvAIO_REQ (ST (i));
1816
1817 if (req)
1818 eio_grp_add (grp, req);
1819 }
1820}
1821
1822void
1823cancel_subs (aio_req_ornot req)
1824 CODE:
1825 req_cancel_subs (req);
1826
1827void
1828result (aio_req grp, ...)
1829 CODE:
1830{
1831 int i;
1832 AV *av;
1833
1834 grp->errorno = errno;
1835
1836 av = newAV ();
1837 av_extend (av, items - 1);
1838
1839 for (i = 1; i < items; ++i )
1840 av_push (av, newSVsv (ST (i)));
1841
1842 SvREFCNT_dec (grp->sv1);
1843 grp->sv1 = (SV *)av;
1844}
1845
1846void
1847errno (aio_req grp, int errorno = errno)
1848 CODE:
1849 grp->errorno = errorno;
1850
1851void
1852limit (aio_req grp, int limit)
1853 CODE:
1854 eio_grp_limit (grp, limit);
1855
1856void
1857feed (aio_req grp, SV *callback=&PL_sv_undef)
1858 CODE:
1859{
1860 SvREFCNT_dec (grp->sv2);
1861 grp->sv2 = newSVsv (callback);
1862 grp->feed = aio_grp_feed;
1863
1864 if (grp->int2 <= 0)
1865 grp->int2 = 2;
1866
1867 eio_grp_limit (grp, grp->int2);
1868}
1869

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