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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.9 by root, Tue Jul 12 11:02:54 2005 UTC vs.
Revision 1.265 by root, Tue Aug 14 11:50:43 2018 UTC

1#include "libeio/xthread.h"
2
3#include <errno.h>
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
9#if !defined mg_findext
10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
11#endif
12
13#include <stddef.h>
14#include <stdlib.h>
15#include <errno.h>
5#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
6#include <sys/stat.h> 18#include <sys/stat.h>
7#include <unistd.h> 19#include <limits.h>
8#include <fcntl.h> 20#include <fcntl.h>
9#include <signal.h>
10#include <sched.h> 21#include <sched.h>
11 22
12#include <pthread.h> 23#if HAVE_SYS_MKDEV_H
24# include <sys/mkdev.h>
25#elif HAVE_SYS_SYSMACROS_H
13#include <sys/syscall.h> 26# include <sys/sysmacros.h>
27#endif
14 28
15typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 29#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
16typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ 30# include <sys/mman.h>
17typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ 31#endif
18 32
19#if __ia64 33/* the incompetent fool that created musl keeps __linux__, refuses
20# define STACKSIZE 65536 34 * to implement any linux standard apis, and also has no way to test
35 * for his broken iplementation. don't complain to me if this fails
36 * for you.
37 */
38#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
39# include <linux/fs.h>
40# ifdef FS_IOC_FIEMAP
41# include <linux/types.h>
42# include <linux/fiemap.h>
43# define HAVE_FIEMAP 1
44# endif
45#endif
46
47/* perl namespace pollution */
48#undef VERSION
49
50/* perl stupidly overrides readdir and maybe others */
51/* with thread-unsafe versions, imagine that :( */
52#undef readdir
53#undef opendir
54#undef closedir
55
56#ifdef _WIN32
57
58 // perl overrides all those nice libc functions
59
60 #undef malloc
61 #undef free
62 #undef open
63 #undef read
64 #undef write
65 #undef send
66 #undef recv
67 #undef stat
68 #undef lstat
69 #undef fstat
70 #undef truncate
71 #undef ftruncate
72 #undef open
73 #undef link
74 #undef close
75 #undef unlink
76 #undef mkdir
77 #undef rmdir
78 #undef rename
79 #undef lseek
80 #undef opendir
81 #undef readdir
82 #undef closedir
83 #undef chmod
84 #undef fchmod
85 #undef dup
86 #undef dup2
87 #undef abort
88 #undef pipe
89
90 #define EIO_STRUCT_STAT struct _stati64
91 #define EIO_STRUCT_STATI64
92
21#else 93#else
22# define STACKSIZE 4096 94
95 #include <sys/time.h>
96 #include <sys/select.h>
97 #include <unistd.h>
98 #include <utime.h>
99 #include <signal.h>
100
101 #define EIO_STRUCT_STAT Stat_t
102
103#endif
104
105/*****************************************************************************/
106
107#if __GNUC__ >= 3
108# define expect(expr,value) __builtin_expect ((expr),(value))
109#else
110# define expect(expr,value) (expr)
111#endif
112
113#define expect_false(expr) expect ((expr) != 0, 0)
114#define expect_true(expr) expect ((expr) != 0, 1)
115
116/*****************************************************************************/
117
118#include "config.h"
119
120#if HAVE_ST_XTIMENSEC
121# define ATIMENSEC PL_statcache.st_atimensec
122# define MTIMENSEC PL_statcache.st_mtimensec
123# define CTIMENSEC PL_statcache.st_ctimensec
124#elif HAVE_ST_XTIMESPEC
125# define ATIMENSEC PL_statcache.st_atim.tv_nsec
126# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
127# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
128#else
129# define ATIMENSEC 0
130# define MTIMENSEC 0
131# define CTIMENSEC 0
132#endif
133
134#include "schmorp.h"
135
136#if HAVE_EVENTFD
137# include <sys/eventfd.h>
138#endif
139
140#if HAVE_TIMERFD
141# include <sys/timerfd.h>
142#endif
143
144#if HAVE_RLIMITS
145 #include <sys/time.h>
146 #include <sys/resource.h>
147#endif
148
149typedef SV SV8; /* byte-sv, used for argument-checking */
150typedef int aio_rfd; /* read file desriptor */
151typedef int aio_wfd; /* write file descriptor */
152
153static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
154
155#define EIO_REQ_MEMBERS \
156 SV *callback; \
157 SV *sv1, *sv2; \
158 SV *sv3, *sv4; \
159 STRLEN stroffset; \
160 SV *self;
161
162#define EIO_NO_WRAPPERS 1
163
164#include "libeio/eio.h"
165
166static int req_invoke (eio_req *req);
167#define EIO_FINISH(req) req_invoke (req)
168static void req_destroy (eio_req *grp);
169#define EIO_DESTROY(req) req_destroy (req)
170
171#include "libeio/eio.c"
172
173#if !HAVE_POSIX_FADVISE
174# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
175#endif
176
177#if !HAVE_POSIX_MADVISE
178# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
179#endif
180
181#ifndef MAP_ANONYMOUS
182# ifdef MAP_ANON
183# define MAP_ANONYMOUS MAP_ANON
184# else
185# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
23#endif 186# endif
187#endif
24 188
25enum { 189#ifndef makedev
26 REQ_QUIT, 190# define makedev(maj,min) (((maj) << 8) | (min))
27 REQ_OPEN, REQ_CLOSE, 191#endif
28 REQ_READ, REQ_WRITE, REQ_READAHEAD, 192#ifndef major
29 REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, 193# define major(dev) ((dev) >> 8)
30 REQ_FSYNC, REQ_FDATASYNC, 194#endif
195#ifndef minor
196# define minor(dev) ((dev) & 0xff)
197#endif
198
199#if PAGESIZE <= 0
200# define PAGESIZE sysconf (_SC_PAGESIZE)
201#endif
202
203/*****************************************************************************/
204
205#if !_POSIX_MAPPED_FILES
206# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
207# define munmap(addr,length) EIO_ENOSYS ()
208#endif
209
210#if !_POSIX_MEMORY_PROTECTION
211# define mprotect(addr,len,prot) EIO_ENOSYS ()
212#endif
213
214#if !MREMAP_MAYMOVE
215# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
216#endif
217
218#define FOREIGN_MAGIC PERL_MAGIC_ext
219
220static int ecb_cold
221mmap_free (pTHX_ SV *sv, MAGIC *mg)
222{
223 int old_errno = errno;
224 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
225 errno = old_errno;
226
227 mg->mg_obj = 0; /* just in case */
228
229 SvREADONLY_off (sv);
230
231 if (SvPVX (sv) != mg->mg_ptr)
232 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
233
234 SvCUR_set (sv, 0);
235 SvPVX (sv) = 0;
236 SvOK_off (sv);
237
238 return 0;
239}
240
241static MGVTBL mmap_vtbl = {
242 0, 0, 0, 0, mmap_free
31}; 243};
32 244
33typedef struct aio_cb { 245static int ecb_cold
34 struct aio_cb *volatile next; 246sysfree_free (pTHX_ SV *sv, MAGIC *mg)
247{
248 free (mg->mg_ptr);
249 mg->mg_obj = 0; /* just in case */
35 250
36 int type; 251 SvREADONLY_off (sv);
37 252
38 int fd; 253 if (SvPVX (sv) != mg->mg_ptr)
39 off_t offset; 254 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
40 size_t length;
41 ssize_t result;
42 mode_t mode; /* open */
43 int errorno;
44 SV *data, *callback;
45 void *dataptr;
46 STRLEN dataoffset;
47 255
48 Stat_t *statdata; 256 SvCUR_set (sv, 0);
49} aio_cb; 257 SvPVX (sv) = 0;
258 SvOK_off (sv);
50 259
51typedef aio_cb *aio_req; 260 return 0;
261}
52 262
53static int started; 263static MGVTBL sysfree_vtbl = {
54static int nreqs; 264 0, 0, 0, 0, sysfree_free
55static int max_outstanding = 1<<30; 265};
56static int respipe [2];
57 266
58static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 267/*****************************************************************************/
59static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
60static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
61 268
62static volatile aio_req reqs, reqe; /* queue start, queue end */ 269/* helper: set scalar to foreign ptr with custom free */
63static volatile aio_req ress, rese; /* queue start, queue end */
64
65static void 270static void
66poll_wait () 271sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
67{ 272{
68 if (!nreqs) 273 sv_force_normal (sv);
274
275 /* we store the length in mg_obj, as namlen is I32 :/ */
276 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
277 ->mg_obj = (SV *)length;
278
279 SvUPGRADE (sv, SVt_PV); /* nop... */
280
281 if (SvLEN (sv))
282 Safefree (SvPVX (sv));
283
284 SvPVX (sv) = (char *)addr;
285 SvCUR_set (sv, length);
286 SvLEN_set (sv, 0);
287 SvPOK_only (sv);
288}
289
290static void
291sv_clear_foreign (SV *sv)
292{
293 /* todo: iterate over magic and only free ours, but of course */
294 /* the perl5porters will call that (correct) behaviour buggy */
295 sv_unmagic (sv, FOREIGN_MAGIC);
296}
297
298/*****************************************************************************/
299
300/* defines all sorts of constants to 0 unless they are already defined */
301/* also provides const_iv_ and const_niv_ macros for them */
302#include "def0.h"
303
304/*****************************************************************************/
305
306static void
307fiemap (eio_req *req)
308{
309 req->result = -1;
310
311#if HAVE_FIEMAP
312 /* assume some c99 */
313 struct fiemap *fiemap = 0;
314 size_t end_offset;
315 int count = req->int3;
316
317 req->flags |= EIO_FLAG_PTR1_FREE;
318
319 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
320 /* increase in 3.5kb steps */
321 if (count < 0)
322 count = 8;
323
324 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
325 errno = ENOMEM;
326 if (!fiemap)
69 return; 327 return;
70 328
71 fd_set rfd; 329 req->ptr1 = fiemap;
72 FD_ZERO(&rfd);
73 FD_SET(respipe [0], &rfd);
74 330
75 select (respipe [0] + 1, &rfd, 0, 0, 0); 331 fiemap->fm_start = req->offs;
76} 332 fiemap->fm_length = req->size;
333 fiemap->fm_flags = req->int2;
334 fiemap->fm_extent_count = count;
77 335
78static int 336 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
79poll_cb () 337 return;
80{ 338
81 dSP; 339 if (req->int3 >= 0 /* not autosizing */
82 int count = 0; 340 || !fiemap->fm_mapped_extents /* no more extents */
83 aio_req req; 341 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
84 342 goto done;
85 { 343
86 /* read and signals sent by the worker threads */ 344 /* else we have to loop -
87 char buf [32]; 345 * it would be tempting (actually I tried that first) to just query the
88 while (read (respipe [0], buf, 32) > 0) 346 * number of extents needed, but linux often feels like not returning all
89 ; 347 * extents, without telling us it left any out. this complicates
90 } 348 * this quite a bit.
349 */
350
351 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
91 352
92 for (;;) 353 for (;;)
93 { 354 {
94 pthread_mutex_lock (&reslock); 355 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
356 char scratch[3072];
357 struct fiemap *incmap = (struct fiemap *)scratch;
95 358
96 req = ress; 359 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
360 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
361 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
362 incmap->fm_flags = fiemap->fm_flags;
363 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
97 364
98 if (ress) 365 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
366 return;
367
368 if (!incmap->fm_mapped_extents)
369 goto done;
370
371 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
372 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
373 errno = ENOMEM;
374 if (!fiemap)
375 return;
376
377 req->ptr1 = fiemap;
378
379 for (count = 0; count < incmap->fm_mapped_extents; ++count)
99 { 380 {
100 ress = ress->next; 381 struct fiemap_extent *e = incmap->fm_extents + count;
101 if (!ress) rese = 0; 382
383 if (e->fe_logical + e->fe_length >= end_offset)
384 goto done;
385
386 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
387
388 if (e->fe_flags & FIEMAP_EXTENT_LAST)
389 goto done;
390
102 } 391 }
392 }
103 393
104 pthread_mutex_unlock (&reslock); 394done:
395 req->result = 0;
105 396
106 if (!req) 397#else
107 break; 398 errno = ENOSYS;
399#endif
400}
108 401
109 nreqs--; 402/*****************************************************************************/
110 403
111 if (req->type == REQ_QUIT) 404enum {
112 started--; 405 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
113 else 406};
407
408typedef eio_req *aio_req;
409typedef eio_req *aio_req_ornot;
410typedef eio_wd aio_wd;
411
412static SV *on_next_submit;
413static int next_pri = EIO_PRI_DEFAULT;
414static int max_outstanding;
415
416static s_epipe respipe;
417
418static void req_destroy (aio_req req);
419static void req_cancel (aio_req req);
420
421static void
422want_poll (void)
423{
424 /* write a dummy byte to the pipe so fh becomes ready */
425 s_epipe_signal (&respipe);
426}
427
428static void
429done_poll (void)
430{
431 /* read any signals sent by the worker threads */
432 s_epipe_drain (&respipe);
433}
434
435/* must be called at most once */
436static SV *
437req_sv (aio_req req, HV *stash)
438{
439 if (!req->self)
440 {
441 req->self = (SV *)newHV ();
442 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
443 }
444
445 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
446}
447
448static SV *
449newSVaio_wd (aio_wd wd)
450{
451 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
452}
453
454static aio_req
455SvAIO_REQ (SV *sv)
456{
457 MAGIC *mg;
458
459 if (!SvROK (sv)
460 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
461 || (SvSTASH (SvRV (sv)) != aio_grp_stash
462 && SvSTASH (SvRV (sv)) != aio_req_stash
463 && !sv_derived_from (sv, "IO::AIO::REQ")))
464 croak ("object of class IO::AIO::REQ expected");
465
466 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
467
468 return mg ? (aio_req)mg->mg_ptr : 0;
469}
470
471static aio_wd
472SvAIO_WD (SV *sv)
473{
474 if (!SvROK (sv)
475 || SvTYPE (SvRV (sv)) != SVt_PVMG
476 || SvSTASH (SvRV (sv)) != aio_wd_stash)
477 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
478
479 return (aio_wd)(long)SvIVX (SvRV (sv));
480}
481
482static SV *
483newmortalFH (int fd, int flags)
484{
485 if (fd < 0)
486 return &PL_sv_undef;
487
488 GV *gv = (GV *)sv_newmortal ();
489 char sym[64];
490 int symlen;
491
492 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
493 gv_init (gv, aio_stash, sym, symlen, 0);
494
495 symlen = snprintf (
496 sym,
497 sizeof (sym),
498 "%s&=%d",
499 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
500 fd
501 );
502
503 return do_open (gv, sym, symlen, 0, 0, 0, 0)
504 ? (SV *)gv : &PL_sv_undef;
505}
506
507static void
508aio_grp_feed (aio_req grp)
509{
510 if (grp->sv2 && SvOK (grp->sv2))
511 {
512 dSP;
513
514 ENTER;
515 SAVETMPS;
516 PUSHMARK (SP);
517 XPUSHs (req_sv (grp, aio_grp_stash));
518 PUTBACK;
519 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
520 SPAGAIN;
521 FREETMPS;
522 LEAVE;
523 }
524}
525
526static void
527req_submit (eio_req *req)
528{
529 eio_submit (req);
530
531 if (expect_false (on_next_submit))
532 {
533 dSP;
534 SV *cb = sv_2mortal (on_next_submit);
535
536 on_next_submit = 0;
537
538 PUSHMARK (SP);
539 PUTBACK;
540 call_sv (cb, G_DISCARD | G_EVAL);
541 }
542}
543
544static int
545req_invoke (eio_req *req)
546{
547 if (req->flags & FLAG_SV2_RO_OFF)
548 SvREADONLY_off (req->sv2);
549
550 if (!EIO_CANCELLED (req) && req->callback)
551 {
552 dSP;
553 static SV *sv_result_cache; /* caches the result integer SV */
554 SV *sv_result;
555
556 ENTER;
557 SAVETMPS;
558 PUSHMARK (SP);
559 EXTEND (SP, 1);
560
561 /* do not recreate the result IV from scratch each time */
562 if (expect_true (sv_result_cache))
114 { 563 {
115 int errorno = errno; 564 sv_result = sv_result_cache; sv_result_cache = 0;
116 errno = req->errorno; 565 SvIV_set (sv_result, req->result);
117 566 SvIOK_only (sv_result);
118 if (req->type == REQ_READ)
119 SvCUR_set (req->data, req->dataoffset
120 + req->result > 0 ? req->result : 0);
121
122 if (req->data)
123 SvREFCNT_dec (req->data);
124
125 if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
126 {
127 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
128 PL_laststatval = req->result;
129 PL_statcache = *(req->statdata);
130
131 Safefree (req->statdata);
132 }
133
134 PUSHMARK (SP);
135 XPUSHs (sv_2mortal (newSViv (req->result)));
136
137 if (req->type == REQ_OPEN)
138 {
139 /* convert fd to fh */
140 SV *fh;
141
142 PUTBACK;
143 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
144 SPAGAIN;
145
146 fh = POPs;
147
148 PUSHMARK (SP);
149 XPUSHs (fh);
150 }
151
152 if (SvOK (req->callback))
153 {
154 PUTBACK;
155 call_sv (req->callback, G_VOID | G_EVAL);
156 SPAGAIN;
157 }
158
159 if (req->callback)
160 SvREFCNT_dec (req->callback);
161
162 errno = errorno;
163 count++;
164 }
165
166 Safefree (req);
167 }
168
169 return count;
170}
171
172static void *aio_proc(void *arg);
173
174static void
175start_thread (void)
176{
177 sigset_t fullsigset, oldsigset;
178 pthread_t tid;
179 pthread_attr_t attr;
180
181 pthread_attr_init (&attr);
182 pthread_attr_setstacksize (&attr, STACKSIZE);
183 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
184
185 sigfillset (&fullsigset);
186 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
187
188 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
189 started++;
190
191 sigprocmask (SIG_SETMASK, &oldsigset, 0);
192}
193
194static void
195send_req (aio_req req)
196{
197 nreqs++;
198
199 pthread_mutex_lock (&reqlock);
200
201 req->next = 0;
202
203 if (reqe)
204 {
205 reqe->next = req;
206 reqe = req;
207 }
208 else
209 reqe = reqs = req;
210
211 pthread_cond_signal (&reqwait);
212 pthread_mutex_unlock (&reqlock);
213
214 while (nreqs > max_outstanding)
215 {
216 poll_wait ();
217 poll_cb ();
218 }
219}
220
221static void
222end_thread (void)
223{
224 aio_req req;
225 New (0, req, 1, aio_cb);
226 req->type = REQ_QUIT;
227
228 send_req (req);
229}
230
231static void
232read_write (int dowrite, int fd, off_t offset, size_t length,
233 SV *data, STRLEN dataoffset, SV *callback)
234{
235 aio_req req;
236 STRLEN svlen;
237 char *svptr = SvPV (data, svlen);
238
239 SvUPGRADE (data, SVt_PV);
240 SvPOK_on (data);
241
242 if (dataoffset < 0)
243 dataoffset += svlen;
244
245 if (dataoffset < 0 || dataoffset > svlen)
246 croak ("data offset outside of string");
247
248 if (dowrite)
249 {
250 /* write: check length and adjust. */
251 if (length < 0 || length + dataoffset > svlen)
252 length = svlen - dataoffset;
253 }
254 else
255 {
256 /* read: grow scalar as necessary */
257 svptr = SvGROW (data, length + dataoffset);
258 }
259
260 if (length < 0)
261 croak ("length must not be negative");
262
263 Newz (0, req, 1, aio_cb);
264
265 if (!req)
266 croak ("out of memory during aio_req allocation");
267
268 req->type = dowrite ? REQ_WRITE : REQ_READ;
269 req->fd = fd;
270 req->offset = offset;
271 req->length = length;
272 req->data = SvREFCNT_inc (data);
273 req->dataptr = (char *)svptr + dataoffset;
274 req->callback = SvREFCNT_inc (callback);
275
276 send_req (req);
277}
278
279static void *
280aio_proc (void *thr_arg)
281{
282 aio_req req;
283 int type;
284
285 do
286 {
287 pthread_mutex_lock (&reqlock);
288
289 for (;;)
290 {
291 req = reqs;
292
293 if (reqs)
294 {
295 reqs = reqs->next;
296 if (!reqs) reqe = 0;
297 }
298
299 if (req)
300 break;
301
302 pthread_cond_wait (&reqwait, &reqlock);
303 }
304
305 pthread_mutex_unlock (&reqlock);
306
307 errno = 0; /* strictly unnecessary */
308
309 type = req->type;
310
311 switch (type)
312 {
313 case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
314 case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
315#if SYS_readahead
316 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
317#else
318 case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
319#endif
320
321 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
322 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
323 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
324
325 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
326 case REQ_CLOSE: req->result = close (req->fd); break;
327 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
328
329 case REQ_FSYNC: req->result = fsync (req->fd); break;
330 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
331
332 case REQ_QUIT:
333 break;
334
335 default:
336 req->result = ENOSYS;
337 break;
338 }
339
340 req->errorno = errno;
341
342 pthread_mutex_lock (&reslock);
343
344 req->next = 0;
345
346 if (rese)
347 {
348 rese->next = req;
349 rese = req;
350 } 567 }
351 else 568 else
352 { 569 {
353 rese = ress = req; 570 sv_result = newSViv (req->result);
354 571 SvREADONLY_on (sv_result);
355 /* write a dummy byte to the pipe so fh becomes ready */
356 write (respipe [1], &respipe, 1);
357 } 572 }
358 573
359 pthread_mutex_unlock (&reslock); 574 switch (req->type)
575 {
576 case EIO_WD_OPEN:
577 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
578 break;
579
580 case EIO_READDIR:
581 {
582 SV *rv = &PL_sv_undef;
583
584 if (req->result >= 0)
585 {
586 int i;
587 char *names = (char *)req->ptr2;
588 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
589 AV *av = newAV ();
590
591 av_extend (av, req->result - 1);
592
593 for (i = 0; i < req->result; ++i)
594 {
595 if (req->int1 & EIO_READDIR_DENTS)
596 {
597 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
598
599 if (req->int1 & EIO_READDIR_CUSTOM2)
600 {
601 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
602 AV *avent = newAV ();
603
604 av_extend (avent, 2);
605
606 if (!sv_type [ent->type])
607 {
608 sv_type [ent->type] = newSViv (ent->type);
609 SvREADONLY_on (sv_type [ent->type]);
610 }
611
612 av_store (avent, 0, namesv);
613 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
614 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
615
616 av_store (av, i, newRV_noinc ((SV *)avent));
617 }
618 else
619 av_store (av, i, namesv);
620
621 ++ent;
622 }
623 else
624 {
625 SV *name = newSVpv (names, 0);
626 av_store (av, i, name);
627 names += SvCUR (name) + 1;
628 }
629 }
630
631 rv = sv_2mortal (newRV_noinc ((SV *)av));
632 }
633
634 PUSHs (rv);
635
636 if (req->int1 & EIO_READDIR_CUSTOM1)
637 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
638 }
639 break;
640
641 case EIO_OPEN:
642 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
643 break;
644
645 case EIO_STATVFS:
646 case EIO_FSTATVFS:
647 {
648 SV *rv = &PL_sv_undef;
649
650#ifndef _WIN32
651 if (req->result >= 0)
652 {
653 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
654 HV *hv = newHV ();
655 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
656 * chooses to make it a struct.
657 */
658 unsigned long fsid = 0;
659 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
660
661 rv = sv_2mortal (newRV_noinc ((SV *)hv));
662
663 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
664 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
665 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
666 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
667 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
668 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
669 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
670 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
671 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
672 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
673 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
674 }
675#endif
676
677 PUSHs (rv);
678 }
679
680 break;
681
682 case EIO_GROUP:
683 req->int1 = 2; /* mark group as finished */
684
685 if (req->sv1)
686 {
687 int i;
688 AV *av = (AV *)req->sv1;
689
690 EXTEND (SP, AvFILL (av) + 1);
691 for (i = 0; i <= AvFILL (av); ++i)
692 PUSHs (*av_fetch (av, i, 0));
693 }
694 break;
695
696 case EIO_NOP:
697 case EIO_BUSY:
698 break;
699
700 case EIO_READLINK:
701 case EIO_REALPATH:
702 if (req->result > 0)
703 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
704 break;
705
706 case EIO_STAT:
707 case EIO_LSTAT:
708 case EIO_FSTAT:
709 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
710
711 if (!(PL_laststatval = req->result))
712 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
713 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
714
715 PUSHs (sv_result);
716 break;
717
718 case EIO_SEEK:
719 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
720 break;
721
722 case EIO_READ:
723 {
724 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
725 *SvEND (req->sv2) = 0;
726 SvPOK_only (req->sv2);
727 SvSETMAGIC (req->sv2);
728 PUSHs (sv_result);
729 }
730 break;
731
732 case EIO_SLURP:
733 {
734 if (req->result >= 0)
735 {
736 /* if length was originally not known, we steal the malloc'ed memory */
737 if (req->flags & EIO_FLAG_PTR2_FREE)
738 {
739 req->flags &= ~EIO_FLAG_PTR2_FREE;
740 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
741 }
742 else
743 {
744 SvCUR_set (req->sv2, req->result);
745 *SvEND (req->sv2) = 0;
746 SvPOK_only (req->sv2);
747 }
748
749 SvSETMAGIC (req->sv2);
750 }
751
752 PUSHs (sv_result);
753 }
754 break;
755
756 case EIO_CUSTOM:
757 if (req->feed == fiemap)
758 {
759#if HAVE_FIEMAP
760 if (!req->result)
761 {
762 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
763
764 if (fiemap->fm_extent_count)
765 {
766 AV *av = newAV ();
767 int i;
768
769 while (fiemap->fm_mapped_extents)
770 {
771 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
772 AV *ext_av = newAV ();
773
774 av_store (ext_av, 3, newSVuv (extent->fe_flags));
775 av_store (ext_av, 2, newSVval64 (extent->fe_length));
776 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
777 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
778
779 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
780 }
781
782 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
783 }
784 else
785 {
786 SvIV_set (sv_result, fiemap->fm_mapped_extents);
787 PUSHs (sv_result);
788 }
789 }
790#endif
791 }
792 else
793 PUSHs (sv_result);
794 break;
795
796 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
797 if (req->result > 0)
798 SvIV_set (sv_result, 0);
799 /* FALLTHROUGH */
800
801 default:
802 PUSHs (sv_result);
803 break;
804 }
805
806 errno = req->errorno;
807
808 PUTBACK;
809 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
810 SPAGAIN;
811
812 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
813 SvREFCNT_dec (sv_result);
814 else
815 sv_result_cache = sv_result;
816
817 FREETMPS;
818 LEAVE;
819
820 PUTBACK;
360 } 821 }
361 while (type != REQ_QUIT);
362 822
823 return !!SvTRUE (ERRSV);
824}
825
826static void
827req_destroy (aio_req req)
828{
829 if (req->self)
830 {
831 sv_unmagic (req->self, PERL_MAGIC_ext);
832 SvREFCNT_dec (req->self);
833 }
834
835 SvREFCNT_dec (req->sv1);
836 SvREFCNT_dec (req->sv2);
837 SvREFCNT_dec (req->sv3);
838 SvREFCNT_dec (req->sv4);
839 SvREFCNT_dec (req->callback);
840
841 free (req);
842}
843
844static void
845req_cancel_subs (aio_req grp)
846{
847 if (grp->type != EIO_GROUP)
848 return;
849
850 SvREFCNT_dec (grp->sv2);
851 grp->sv2 = 0;
852
853 eio_grp_cancel (grp);
854}
855
856static void ecb_cold
857create_respipe (void)
858{
859 if (s_epipe_renew (&respipe))
860 croak ("IO::AIO: unable to initialize result pipe");
861}
862
863static void
864poll_wait (void)
865{
866 while (eio_nreqs ())
867 {
868 int size;
869
870 X_LOCK (EIO_POOL->reslock);
871 size = EIO_POOL->res_queue.size;
872 X_UNLOCK (EIO_POOL->reslock);
873
874 if (size)
875 return;
876
877 etp_maybe_start_thread (EIO_POOL);
878
879 s_epipe_wait (&respipe);
880 }
881}
882
883static int
884poll_cb (void)
885{
886 for (;;)
887 {
888 int res = eio_poll ();
889
890 if (res > 0)
891 croak (0);
892
893 if (!max_outstanding || max_outstanding > eio_nreqs ())
894 return res;
895
896 poll_wait ();
897 }
898}
899
900static void ecb_cold
901reinit (void)
902{
903 create_respipe ();
904
905 if (eio_init (want_poll, done_poll) < 0)
906 croak ("IO::AIO: unable to initialise eio library");
907}
908
909/*****************************************************************************/
910
911static SV *
912get_cb (SV *cb_sv)
913{
914 SvGETMAGIC (cb_sv);
915 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
916}
917
918static aio_req ecb_noinline
919dreq (SV *callback)
920{
921 SV *cb_cv;
922 aio_req req;
923 int req_pri = next_pri;
924 next_pri = EIO_PRI_DEFAULT;
925
926 cb_cv = get_cb (callback);
927
928 req = calloc (sizeof (*req), 1);
929 if (!req)
930 croak ("out of memory during eio_req allocation");
931
932 req->callback = SvREFCNT_inc (cb_cv);
933 req->pri = req_pri;
934
363 return 0; 935 return req;
364} 936}
937
938#define dREQ \
939 aio_req req = dreq (callback); \
940
941#define REQ_SEND \
942 PUTBACK; \
943 req_submit (req); \
944 SPAGAIN; \
945 \
946 if (GIMME_V != G_VOID) \
947 XPUSHs (req_sv (req, aio_req_stash));
948
949ecb_inline void
950req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
951{
952 if (expect_false (SvROK (path)))
953 {
954 SV *rv = SvRV (path);
955 SV *wdob;
956
957 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
958 {
959 path = AvARRAY (rv)[1];
960 wdob = AvARRAY (rv)[0];
961
962 if (SvOK (wdob))
963 {
964 *wd = SvAIO_WD (wdob);
965 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
966 }
967 else
968 *wd = EIO_INVALID_WD;
969 }
970 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
971 {
972 *wd = (aio_wd)(long)SvIVX (rv);
973 *wdsv = SvREFCNT_inc_NN (rv);
974 *ptr = ".";
975 return; /* path set to "." */
976 }
977 else
978 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
979 }
980
981 *pathsv = newSVsv (path);
982 *ptr = SvPVbyte_nolen (*pathsv);
983}
984
985static void ecb_noinline
986req_set_path1 (aio_req req, SV *path)
987{
988 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
989}
990
991static void ecb_noinline
992req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
993{
994 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
995
996 switch (SvTYPE (rv))
997 {
998 case SVt_PVIO:
999 case SVt_PVLV:
1000 case SVt_PVGV:
1001 req->type = type_fh;
1002 req->sv1 = newSVsv (fh_or_path);
1003 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1004 break;
1005
1006 default:
1007 req->type = type_path;
1008 req_set_path1 (req, fh_or_path);
1009 break;
1010 }
1011}
1012
1013/*****************************************************************************/
1014
1015static void
1016ts_set (struct timespec *ts, NV value)
1017{
1018 ts->tv_sec = value;
1019 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
1020}
1021
1022static NV
1023ts_get (const struct timespec *ts)
1024{
1025 return ts->tv_sec + ts->tv_nsec * 1e-9;
1026}
1027
1028/*****************************************************************************/
1029
1030XS(boot_IO__AIO) ecb_cold;
365 1031
366MODULE = IO::AIO PACKAGE = IO::AIO 1032MODULE = IO::AIO PACKAGE = IO::AIO
367 1033
368PROTOTYPES: ENABLE 1034PROTOTYPES: ENABLE
369 1035
370BOOT: 1036BOOT:
371{ 1037{
372 if (pipe (respipe)) 1038 static const struct {
373 croak ("unable to initialize result pipe"); 1039 const char *name;
1040 IV iv;
1041 } *civ, const_iv[] = {
1042# define const_niv(name, value) { # name, (IV) value },
1043# define const_iv(name) { # name, (IV) name },
1044# define const_eio(name) { # name, (IV) EIO_ ## name },
374 1045
375 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) 1046 /* you have to re-run ./gendef0 after adding/removing any constants here */
376 croak ("cannot set result pipe to nonblocking mode"); 1047 /* the first block can be undef if missing */
1048 const_iv (ENOSYS)
1049 const_iv (EXDEV)
1050 const_iv (EBADR)
377 1051
378 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) 1052 /* for lseek */
379 croak ("cannot set result pipe to nonblocking mode"); 1053 const_iv (SEEK_DATA)
380} 1054 const_iv (SEEK_HOLE)
381 1055
1056 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1057 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1058 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1059 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1060 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1061 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1062
1063 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1064 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1065 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1066 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1067 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1068
1069 /* the second block will be 0 when missing */
1070 const_iv (O_ACCMODE)
1071
1072 const_iv (O_RDONLY)
1073 const_iv (O_WRONLY)
1074 const_iv (O_RDWR)
1075 const_iv (O_CREAT)
1076 const_iv (O_TRUNC)
1077 const_iv (O_EXCL)
1078 const_iv (O_APPEND)
1079
1080 const_iv (O_ASYNC)
1081 const_iv (O_DIRECT)
1082 const_iv (O_NOATIME)
1083
1084 const_iv (O_CLOEXEC)
1085 const_iv (O_NOCTTY)
1086 const_iv (O_NOFOLLOW)
1087 const_iv (O_NONBLOCK)
1088 const_iv (O_EXEC)
1089 const_iv (O_SEARCH)
1090 const_iv (O_DIRECTORY)
1091 const_iv (O_DSYNC)
1092 const_iv (O_RSYNC)
1093 const_iv (O_SYNC)
1094 const_iv (O_PATH)
1095 const_iv (O_TMPFILE)
1096 const_iv (O_TTY_INIT)
1097
1098 const_iv (S_IFIFO)
1099 const_iv (S_IFCHR)
1100 const_iv (S_IFBLK)
1101 const_iv (S_IFLNK)
1102 const_iv (S_IFREG)
1103 const_iv (S_IFDIR)
1104 const_iv (S_IFWHT)
1105 const_iv (S_IFSOCK)
1106 const_iv (S_IFMT)
1107
1108 const_iv (ST_RDONLY)
1109 const_iv (ST_NOSUID)
1110 const_iv (ST_NODEV)
1111 const_iv (ST_NOEXEC)
1112 const_iv (ST_SYNCHRONOUS)
1113 const_iv (ST_MANDLOCK)
1114 const_iv (ST_WRITE)
1115 const_iv (ST_APPEND)
1116 const_iv (ST_IMMUTABLE)
1117 const_iv (ST_NOATIME)
1118 const_iv (ST_NODIRATIME)
1119 const_iv (ST_RELATIME)
1120
1121 const_iv (PROT_NONE)
1122 const_iv (PROT_EXEC)
1123 const_iv (PROT_READ)
1124 const_iv (PROT_WRITE)
1125
1126 const_iv (MAP_PRIVATE)
1127 const_iv (MAP_SHARED)
1128 const_iv (MAP_FIXED)
1129 const_iv (MAP_ANONYMOUS)
1130
1131 /* linuxish */
1132 const_iv (MAP_LOCKED)
1133 const_iv (MAP_NORESERVE)
1134 const_iv (MAP_POPULATE)
1135 const_iv (MAP_NONBLOCK)
1136 const_iv (MAP_GROWSDOWN)
1137 const_iv (MAP_32BIT)
1138 const_iv (MAP_HUGETLB)
1139 const_iv (MAP_STACK)
1140
1141 const_iv (MREMAP_MAYMOVE)
1142 const_iv (MREMAP_FIXED)
1143
1144 const_iv (F_DUPFD_CLOEXEC)
1145
1146 const_iv (MSG_CMSG_CLOEXEC)
1147 const_iv (SOCK_CLOEXEC)
1148
1149 const_iv (F_OFD_GETLK)
1150 const_iv (F_OFD_SETLK)
1151 const_iv (F_OFD_GETLKW)
1152
1153 const_iv (FIFREEZE)
1154 const_iv (FITHAW)
1155 const_iv (FITRIM)
1156 const_iv (FICLONE)
1157 const_iv (FICLONERANGE)
1158 const_iv (FIDEDUPERANGE)
1159
1160 const_iv (FS_IOC_GETFLAGS)
1161 const_iv (FS_IOC_SETFLAGS)
1162 const_iv (FS_IOC_GETVERSION)
1163 const_iv (FS_IOC_SETVERSION)
1164 const_iv (FS_IOC_FIEMAP)
1165 const_iv (FS_IOC_FSGETXATTR)
1166 const_iv (FS_IOC_FSSETXATTR)
1167 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1168 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1169 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1170
1171 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1172
1173 const_iv (FS_SECRM_FL)
1174 const_iv (FS_UNRM_FL)
1175 const_iv (FS_COMPR_FL)
1176 const_iv (FS_SYNC_FL)
1177 const_iv (FS_IMMUTABLE_FL)
1178 const_iv (FS_APPEND_FL)
1179 const_iv (FS_NODUMP_FL)
1180 const_iv (FS_NOATIME_FL)
1181 const_iv (FS_DIRTY_FL)
1182 const_iv (FS_COMPRBLK_FL)
1183 const_iv (FS_NOCOMP_FL)
1184 const_iv (FS_ENCRYPT_FL)
1185 const_iv (FS_BTREE_FL)
1186 const_iv (FS_INDEX_FL)
1187 const_iv (FS_JOURNAL_DATA_FL)
1188 const_iv (FS_NOTAIL_FL)
1189 const_iv (FS_DIRSYNC_FL)
1190 const_iv (FS_TOPDIR_FL)
1191 const_iv (FS_FL_USER_MODIFIABLE)
1192
1193 const_iv (FS_XFLAG_REALTIME)
1194 const_iv (FS_XFLAG_PREALLOC)
1195 const_iv (FS_XFLAG_IMMUTABLE)
1196 const_iv (FS_XFLAG_APPEND)
1197 const_iv (FS_XFLAG_SYNC)
1198 const_iv (FS_XFLAG_NOATIME)
1199 const_iv (FS_XFLAG_NODUMP)
1200 const_iv (FS_XFLAG_RTINHERIT)
1201 const_iv (FS_XFLAG_PROJINHERIT)
1202 const_iv (FS_XFLAG_NOSYMLINKS)
1203 const_iv (FS_XFLAG_EXTSIZE)
1204 const_iv (FS_XFLAG_EXTSZINHERIT)
1205 const_iv (FS_XFLAG_NODEFRAG)
1206 const_iv (FS_XFLAG_FILESTREAM)
1207 const_iv (FS_XFLAG_DAX)
1208 const_iv (FS_XFLAG_HASATTR)
1209
1210 const_iv (FIEMAP_FLAG_SYNC)
1211 const_iv (FIEMAP_FLAG_XATTR)
1212 const_iv (FIEMAP_FLAGS_COMPAT)
1213 const_iv (FIEMAP_EXTENT_LAST)
1214 const_iv (FIEMAP_EXTENT_UNKNOWN)
1215 const_iv (FIEMAP_EXTENT_DELALLOC)
1216 const_iv (FIEMAP_EXTENT_ENCODED)
1217 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1218 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1219 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1220 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1221 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1222 const_iv (FIEMAP_EXTENT_MERGED)
1223 const_iv (FIEMAP_EXTENT_SHARED)
1224
1225 const_iv (SPLICE_F_MOVE)
1226 const_iv (SPLICE_F_NONBLOCK)
1227 const_iv (SPLICE_F_MORE)
1228 const_iv (SPLICE_F_GIFT)
1229
1230 const_iv (EFD_CLOEXEC)
1231 const_iv (EFD_NONBLOCK)
1232 const_iv (EFD_SEMAPHORE)
1233
1234 const_iv (CLOCK_REALTIME)
1235 const_iv (CLOCK_MONOTONIC)
1236 const_iv (CLOCK_BOOTTIME)
1237 const_iv (CLOCK_REALTIME_ALARM)
1238 const_iv (CLOCK_BOOTTIME_ALARM)
1239
1240 const_iv (TFD_NONBLOCK)
1241 const_iv (TFD_CLOEXEC)
1242
1243 const_iv (TFD_TIMER_ABSTIME)
1244 const_iv (TFD_TIMER_CANCEL_ON_SET)
1245
1246 /* these are libeio constants, and are independent of gendef0 */
1247 const_eio (SEEK_SET)
1248 const_eio (SEEK_CUR)
1249 const_eio (SEEK_END)
1250
1251 const_eio (MCL_FUTURE)
1252 const_eio (MCL_CURRENT)
1253
1254 const_eio (MS_ASYNC)
1255 const_eio (MS_INVALIDATE)
1256 const_eio (MS_SYNC)
1257
1258 const_eio (MT_MODIFY)
1259
1260 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1261 const_eio (SYNC_FILE_RANGE_WRITE)
1262 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1263
1264 const_eio (FALLOC_FL_KEEP_SIZE)
1265 const_eio (FALLOC_FL_PUNCH_HOLE)
1266 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1267 const_eio (FALLOC_FL_ZERO_RANGE)
1268 const_eio (FALLOC_FL_INSERT_RANGE)
1269 const_eio (FALLOC_FL_UNSHARE_RANGE)
1270
1271 const_eio (RENAME_NOREPLACE)
1272 const_eio (RENAME_EXCHANGE)
1273 const_eio (RENAME_WHITEOUT)
1274
1275 const_eio (READDIR_DENTS)
1276 const_eio (READDIR_DIRS_FIRST)
1277 const_eio (READDIR_STAT_ORDER)
1278 const_eio (READDIR_FOUND_UNKNOWN)
1279
1280 const_eio (DT_UNKNOWN)
1281 const_eio (DT_FIFO)
1282 const_eio (DT_CHR)
1283 const_eio (DT_DIR)
1284 const_eio (DT_BLK)
1285 const_eio (DT_REG)
1286 const_eio (DT_LNK)
1287 const_eio (DT_SOCK)
1288 const_eio (DT_WHT)
1289 };
1290
1291 aio_stash = gv_stashpv ("IO::AIO" , 1);
1292 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1293 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1294 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1295
1296 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1297 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1298
1299 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1300
1301 reinit ();
1302}
1303
382void 1304void
383min_parallel(nthreads) 1305reinit ()
384 int nthreads 1306 PROTOTYPE:
1307
1308void
1309max_poll_reqs (unsigned int nreqs)
385 PROTOTYPE: $ 1310 PROTOTYPE: $
386 CODE: 1311 CODE:
387 while (nthreads > started) 1312 eio_set_max_poll_reqs (nreqs);
388 start_thread ();
389 1313
390void 1314void
391max_parallel(nthreads) 1315max_poll_time (double nseconds)
392 int nthreads
393 PROTOTYPE: $ 1316 PROTOTYPE: $
394 CODE: 1317 CODE:
1318 eio_set_max_poll_time (nseconds);
1319
1320void
1321min_parallel (unsigned int nthreads)
1322 PROTOTYPE: $
1323 CODE:
1324 eio_set_min_parallel (nthreads);
1325
1326void
1327max_parallel (unsigned int nthreads)
1328 PROTOTYPE: $
1329 CODE:
1330 eio_set_max_parallel (nthreads);
1331
1332void
1333max_idle (unsigned int nthreads)
1334 PROTOTYPE: $
1335 CODE:
1336 eio_set_max_idle (nthreads);
1337
1338void
1339idle_timeout (unsigned int seconds)
1340 PROTOTYPE: $
1341 CODE:
1342 eio_set_idle_timeout (seconds);
1343
1344void
1345max_outstanding (unsigned int maxreqs)
1346 PROTOTYPE: $
1347 CODE:
1348 max_outstanding = maxreqs;
1349
1350void
1351aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1352 PPCODE:
395{ 1353{
396 int cur = started; 1354 dREQ;
397 while (cur > nthreads) 1355
398 { 1356 req->type = EIO_WD_OPEN;
399 end_thread (); 1357 req_set_path1 (req, pathname);
1358
1359 REQ_SEND;
1360}
1361
1362void
1363aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1364 PPCODE:
1365{
1366 dREQ;
1367
1368 req->type = EIO_OPEN;
1369 req_set_path1 (req, pathname);
1370 req->int1 = flags;
1371 req->int2 = mode;
1372
1373 REQ_SEND;
1374}
1375
1376void
1377aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1378 ALIAS:
1379 aio_fsync = EIO_FSYNC
1380 aio_fdatasync = EIO_FDATASYNC
1381 aio_syncfs = EIO_SYNCFS
1382 PPCODE:
1383{
1384 int fd = s_fileno_croak (fh, 0);
1385 dREQ;
1386
1387 req->type = ix;
1388 req->sv1 = newSVsv (fh);
1389 req->int1 = fd;
1390
1391 REQ_SEND;
1392}
1393
1394void
1395aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1396 PPCODE:
1397{
1398 int fd = s_fileno_croak (fh, 0);
1399 dREQ;
1400
1401 req->type = EIO_SYNC_FILE_RANGE;
1402 req->sv1 = newSVsv (fh);
1403 req->int1 = fd;
1404 req->offs = offset;
1405 req->size = nbytes;
1406 req->int2 = flags;
1407
1408 REQ_SEND;
1409}
1410
1411void
1412aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1413 PPCODE:
1414{
1415 int fd = s_fileno_croak (fh, 0);
1416 dREQ;
1417
1418 req->type = EIO_FALLOCATE;
1419 req->sv1 = newSVsv (fh);
1420 req->int1 = fd;
1421 req->int2 = mode;
1422 req->offs = offset;
1423 req->size = len;
1424
1425 REQ_SEND;
1426}
1427
1428void
1429aio_close (SV *fh, SV *callback = &PL_sv_undef)
1430 PPCODE:
1431{
1432 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1433 int fd = s_fileno_croak (fh, 0);
1434 dREQ;
1435
1436 if (expect_false (close_fd < 0))
1437 {
1438 int pipefd [2];
1439
1440 if (
1441#ifdef _WIN32
1442 _pipe (pipefd, 1, _O_BINARY) < 0
1443#else
1444 pipe (pipefd) < 0
1445 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1446#endif
1447 || close (pipefd [1]) < 0
400 cur--; 1448 )
1449 abort (); /*D*/
1450
1451 close_fd = pipefd [0];
401 } 1452 }
402 1453
403 while (started > nthreads) 1454 req->type = EIO_DUP2;
1455 req->int1 = close_fd;
1456 req->sv2 = newSVsv (fh);
1457 req->int2 = fd;
1458
1459 REQ_SEND;
1460}
1461
1462void
1463aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1464 PPCODE:
1465{
1466 int fd = s_fileno_croak (fh, 0);
1467 dREQ;
1468
1469 req->type = EIO_SEEK;
1470 req->sv1 = newSVsv (fh);
1471 req->int1 = fd;
1472 req->offs = SvVAL64 (offset);
1473 req->int2 = whence;
1474
1475 REQ_SEND;
1476}
1477
1478void
1479aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1480 ALIAS:
1481 aio_read = EIO_READ
1482 aio_write = EIO_WRITE
1483 PPCODE:
1484{
1485 STRLEN svlen;
1486 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1487 char *svptr = SvPVbyte (data, svlen);
1488 UV len = SvUV (length);
1489
1490 if (dataoffset < 0)
1491 dataoffset += svlen;
1492
1493 if (dataoffset < 0 || dataoffset > svlen)
1494 croak ("dataoffset outside of data scalar");
1495
1496 if (ix == EIO_WRITE)
1497 {
1498 /* write: check length and adjust. */
1499 if (!SvOK (length) || len + dataoffset > svlen)
1500 len = svlen - dataoffset;
1501 }
1502 else
1503 {
1504 /* read: check type and grow scalar as necessary */
1505 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1506 svptr = sv_grow (data, len + dataoffset + 1);
1507 else if (SvCUR (data) < len + dataoffset)
1508 croak ("length + dataoffset outside of scalar, and cannot grow");
1509 }
1510
1511 {
1512 dREQ;
1513
1514 req->type = ix;
1515 req->sv1 = newSVsv (fh);
1516 req->int1 = fd;
1517 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1518 req->size = len;
1519 req->sv2 = SvREFCNT_inc (data);
1520 req->ptr2 = (char *)svptr + dataoffset;
1521 req->stroffset = dataoffset;
1522
1523 if (!SvREADONLY (data))
1524 {
1525 SvREADONLY_on (data);
1526 req->flags |= FLAG_SV2_RO_OFF;
1527 }
1528
1529 REQ_SEND;
1530 }
1531}
1532
1533void
1534aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1535 ALIAS:
1536 aio_ioctl = EIO_IOCTL
1537 aio_fcntl = EIO_FCNTL
1538 PPCODE:
1539{
1540 int fd = s_fileno_croak (fh, 0);
1541 char *svptr;
1542
1543 if (SvPOK (arg) || !SvNIOK (arg))
1544 {
1545 STRLEN svlen;
1546 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1547#ifdef IOCPARM_LEN
1548 STRLEN need = IOCPARM_LEN (request);
1549#else
1550 STRLEN need = 256;
1551#endif
1552
1553 if (svlen < need)
1554 svptr = SvGROW (arg, need);
1555 }
1556 else
1557 svptr = (char *)SvIV (arg);
1558
1559 {
1560 dREQ;
1561
1562 req->type = ix;
1563 req->sv1 = newSVsv (fh);
1564 req->int1 = fd;
1565 req->int2 = (long)request;
1566 req->sv2 = SvREFCNT_inc (arg);
1567 req->ptr2 = svptr;
1568
1569 REQ_SEND;
1570 }
1571}
1572
1573void
1574aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1575 ALIAS:
1576 aio_readlink = EIO_READLINK
1577 aio_realpath = EIO_REALPATH
1578 PPCODE:
1579{
1580 dREQ;
1581
1582 req->type = ix;
1583 req_set_path1 (req, pathname);
1584
1585 REQ_SEND;
1586}
1587
1588void
1589aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1590 PPCODE:
1591{
1592 int ifd = s_fileno_croak (in_fh , 0);
1593 int ofd = s_fileno_croak (out_fh, 1);
1594 dREQ;
1595
1596 req->type = EIO_SENDFILE;
1597 req->sv1 = newSVsv (out_fh);
1598 req->int1 = ofd;
1599 req->sv2 = newSVsv (in_fh);
1600 req->int2 = ifd;
1601 req->offs = in_offset;
1602 req->size = length;
1603
1604 REQ_SEND;
1605}
1606
1607void
1608aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1609 PPCODE:
1610{
1611 int fd = s_fileno_croak (fh, 0);
1612 dREQ;
1613
1614 req->type = EIO_READAHEAD;
1615 req->sv1 = newSVsv (fh);
1616 req->int1 = fd;
1617 req->offs = offset;
1618 req->size = length;
1619
1620 REQ_SEND;
1621}
1622
1623void
1624aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1625 ALIAS:
1626 aio_stat = EIO_STAT
1627 aio_lstat = EIO_LSTAT
1628 aio_statvfs = EIO_STATVFS
1629 PPCODE:
1630{
1631 dREQ;
1632
1633 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1634
1635 REQ_SEND;
1636}
1637
1638void
1639st_xtime ()
1640 ALIAS:
1641 st_atime = 1
1642 st_mtime = 2
1643 st_ctime = 4
1644 st_xtime = 7
1645 PPCODE:
1646 EXTEND (SP, 3);
1647 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1648 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1649 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1650
1651void
1652st_xtimensec ()
1653 ALIAS:
1654 st_atimensec = 1
1655 st_mtimensec = 2
1656 st_ctimensec = 4
1657 st_xtimensec = 7
1658 PPCODE:
1659 EXTEND (SP, 3);
1660 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1661 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1662 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1663
1664UV
1665major (UV dev)
1666 ALIAS:
1667 minor = 1
1668 CODE:
1669 RETVAL = ix ? minor (dev) : major (dev);
1670 OUTPUT:
1671 RETVAL
1672
1673UV
1674makedev (UV maj, UV min)
1675 CODE:
1676 RETVAL = makedev (maj, min);
1677 OUTPUT:
1678 RETVAL
1679
1680void
1681aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1682 PPCODE:
1683{
1684 dREQ;
1685
1686 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1687 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1688 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1689
1690 REQ_SEND;
1691}
1692
1693void
1694aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1695 PPCODE:
1696{
1697 dREQ;
1698
1699 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1700 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1701
1702 REQ_SEND;
1703}
1704
1705void
1706aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1707 PPCODE:
1708{
1709 dREQ;
1710
1711 req->int2 = mode;
1712 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1713
1714 REQ_SEND;
1715}
1716
1717void
1718aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1719 PPCODE:
1720{
1721 dREQ;
1722
1723 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1724 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1725 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1726
1727 REQ_SEND;
1728}
1729
1730void
1731aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1732 PPCODE:
1733{
1734 dREQ;
1735
1736 req->type = EIO_READDIR;
1737 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1738
1739 if (flags & EIO_READDIR_DENTS)
1740 req->int1 |= EIO_READDIR_CUSTOM2;
1741
1742 req_set_path1 (req, pathname);
1743
1744 REQ_SEND;
1745}
1746
1747void
1748aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1749 PPCODE:
1750{
1751 dREQ;
1752
1753 req->type = EIO_MKDIR;
1754 req->int2 = mode;
1755 req_set_path1 (req, pathname);
1756
1757 REQ_SEND;
1758}
1759
1760void
1761aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1762 ALIAS:
1763 aio_unlink = EIO_UNLINK
1764 aio_rmdir = EIO_RMDIR
1765 aio_readdir = EIO_READDIR
1766 PPCODE:
1767{
1768 dREQ;
1769
1770 req->type = ix;
1771 req_set_path1 (req, pathname);
1772
1773 REQ_SEND;
1774}
1775
1776void
1777aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1778 ALIAS:
1779 aio_link = EIO_LINK
1780 aio_symlink = EIO_SYMLINK
1781 aio_rename = EIO_RENAME
1782 PPCODE:
1783{
1784 eio_wd wd2 = 0;
1785 dREQ;
1786
1787 req->type = ix;
1788 req_set_path1 (req, oldpath);
1789 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1790 req->int3 = (long)wd2;
1791
1792 REQ_SEND;
1793}
1794
1795void
1796aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1797 PPCODE:
1798{
1799 eio_wd wd2 = 0;
1800 dREQ;
1801
1802 req->type = EIO_RENAME;
1803 req_set_path1 (req, oldpath);
1804 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1805 req->int2 = flags;
1806 req->int3 = (long)wd2;
1807
1808 REQ_SEND;
1809}
1810
1811void
1812aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1813 PPCODE:
1814{
1815 dREQ;
1816
1817 req->type = EIO_MKNOD;
1818 req->int2 = (mode_t)mode;
1819 req->offs = dev;
1820 req_set_path1 (req, pathname);
1821
1822 REQ_SEND;
1823}
1824
1825void
1826aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1827 ALIAS:
1828 aio_mtouch = EIO_MTOUCH
1829 aio_msync = EIO_MSYNC
1830 PPCODE:
1831{
1832 STRLEN svlen;
1833 char *svptr = SvPVbyte (data, svlen);
1834 UV len = SvUV (length);
1835
1836 if (flags < 0)
1837 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1838
1839 if (offset < 0)
1840 offset += svlen;
1841
1842 if (offset < 0 || offset > svlen)
1843 croak ("offset outside of scalar");
1844
1845 if (!SvOK (length) || len + offset > svlen)
1846 len = svlen - offset;
1847
1848 {
1849 dREQ;
1850
1851 req->type = ix;
1852 req->sv2 = SvREFCNT_inc (data);
1853 req->ptr2 = (char *)svptr + offset;
1854 req->size = len;
1855 req->int1 = flags;
1856
1857 REQ_SEND;
1858 }
1859}
1860
1861void
1862aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1863 PPCODE:
1864{
1865 STRLEN svlen;
1866 char *svptr = SvPVbyte (data, svlen);
1867 UV len = SvUV (length);
1868
1869 if (offset < 0)
1870 offset += svlen;
1871
1872 if (offset < 0 || offset > svlen)
1873 croak ("offset outside of scalar");
1874
1875 if (!SvOK (length) || len + offset > svlen)
1876 len = svlen - offset;
1877
1878 {
1879 dREQ;
1880
1881 req->type = EIO_MLOCK;
1882 req->sv2 = SvREFCNT_inc (data);
1883 req->ptr2 = (char *)svptr + offset;
1884 req->size = len;
1885
1886 REQ_SEND;
1887 }
1888}
1889
1890void
1891aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1892 PPCODE:
1893{
1894 dREQ;
1895
1896 req->type = EIO_MLOCKALL;
1897 req->int1 = flags;
1898
1899 REQ_SEND;
1900}
1901
1902void
1903aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1904 PPCODE:
1905{
1906 int fd = s_fileno_croak (fh, 0);
1907 dREQ;
1908
1909 req->type = EIO_CUSTOM;
1910 req->sv1 = newSVsv (fh);
1911 req->int1 = fd;
1912
1913 req->feed = fiemap;
1914#if HAVE_FIEMAP
1915 /* keep our fingers crossed that the next two types are 64 bit */
1916 req->offs = start;
1917 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1918 req->int2 = flags;
1919 req->int3 = SvOK (count) ? SvIV (count) : -1;
1920#endif
1921
1922 REQ_SEND;
1923}
1924
1925void
1926aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1927 PPCODE:
1928{
1929 char *svptr = 0;
1930
1931 sv_clear_foreign (data);
1932
1933 if (length) /* known length, directly read into scalar */
1934 {
1935 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1936 svptr = sv_grow (data, length + 1);
1937 else if (SvCUR (data) < length)
1938 croak ("length outside of scalar, and cannot grow");
1939 else
1940 svptr = SvPVbyte_nolen (data);
1941 }
1942
1943 {
1944 dREQ;
1945
1946 req->type = EIO_SLURP;
1947 req_set_path1 (req, pathname);
1948 req->offs = offset;
1949 req->size = length;
1950 req->sv2 = SvREFCNT_inc (data);
1951 req->ptr2 = svptr;
1952
1953 if (!SvREADONLY (data))
1954 {
1955 SvREADONLY_on (data);
1956 req->flags |= FLAG_SV2_RO_OFF;
1957 }
1958
1959 REQ_SEND;
1960 }
1961}
1962
1963void
1964aio_busy (double delay, SV *callback = &PL_sv_undef)
1965 PPCODE:
1966{
1967 dREQ;
1968
1969 req->type = EIO_BUSY;
1970 req->nv1 = delay < 0. ? 0. : delay;
1971
1972 REQ_SEND;
1973}
1974
1975void
1976aio_group (SV *callback = &PL_sv_undef)
1977 PPCODE:
1978{
1979 dREQ;
1980
1981 req->type = EIO_GROUP;
1982
1983 PUTBACK;
1984 req_submit (req);
1985 SPAGAIN;
1986
1987 XPUSHs (req_sv (req, aio_grp_stash));
1988}
1989
1990void
1991aio_nop (SV *callback = &PL_sv_undef)
1992 ALIAS:
1993 aio_nop = EIO_NOP
1994 aio_sync = EIO_SYNC
1995 PPCODE:
1996{
1997 dREQ;
1998
1999 req->type = ix;
2000
2001 REQ_SEND;
2002}
2003
2004int
2005aioreq_pri (int pri = NO_INIT)
2006 CODE:
2007 RETVAL = next_pri;
2008 if (items > 0)
2009 {
2010 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2011 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2012 next_pri = pri;
2013 }
2014 OUTPUT:
2015 RETVAL
2016
2017void
2018aioreq_nice (int nice = 0)
2019 CODE:
2020 nice = next_pri - nice;
2021 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2022 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2023 next_pri = nice;
2024
2025void
2026flush ()
2027 CODE:
2028 while (eio_nreqs ())
404 { 2029 {
405 poll_wait (); 2030 poll_wait ();
406 poll_cb (); 2031 poll_cb ();
407 } 2032 }
408}
409 2033
410int 2034int
411max_outstanding(nreqs) 2035poll ()
412 int nreqs
413 PROTOTYPE: $
414 CODE:
415 RETVAL = max_outstanding;
416 max_outstanding = nreqs;
417
418void
419aio_open(pathname,flags,mode,callback=&PL_sv_undef)
420 SV * pathname
421 int flags
422 int mode
423 SV * callback
424 PROTOTYPE: $$$;$
425 CODE: 2036 CODE:
426{
427 aio_req req;
428
429 Newz (0, req, 1, aio_cb);
430
431 if (!req)
432 croak ("out of memory during aio_req allocation");
433
434 req->type = REQ_OPEN;
435 req->data = newSVsv (pathname);
436 req->dataptr = SvPV_nolen (req->data);
437 req->fd = flags;
438 req->mode = mode;
439 req->callback = SvREFCNT_inc (callback);
440
441 send_req (req);
442}
443
444void
445aio_close(fh,callback=&PL_sv_undef)
446 InputStream fh
447 SV * callback
448 PROTOTYPE: $;$
449 ALIAS:
450 aio_close = REQ_CLOSE
451 aio_fsync = REQ_FSYNC
452 aio_fdatasync = REQ_FDATASYNC
453 CODE:
454{
455 aio_req req;
456
457 Newz (0, req, 1, aio_cb);
458
459 if (!req)
460 croak ("out of memory during aio_req allocation");
461
462 req->type = ix;
463 req->fd = PerlIO_fileno (fh);
464 req->callback = SvREFCNT_inc (callback);
465
466 send_req (req);
467}
468
469void
470aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
471 InputStream fh
472 UV offset
473 IV length
474 SV * data
475 IV dataoffset
476 SV * callback
477 PROTOTYPE: $$$$$;$
478 CODE:
479 read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
480
481void
482aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
483 OutputStream fh
484 UV offset
485 IV length
486 SV * data
487 IV dataoffset
488 SV * callback
489 PROTOTYPE: $$$$$;$
490 CODE:
491 read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
492
493void
494aio_readahead(fh,offset,length,callback=&PL_sv_undef)
495 InputStream fh
496 UV offset
497 IV length
498 SV * callback
499 PROTOTYPE: $$$;$
500 CODE:
501{
502 aio_req req;
503
504 if (length < 0)
505 croak ("length must not be negative");
506
507 Newz (0, req, 1, aio_cb);
508
509 if (!req)
510 croak ("out of memory during aio_req allocation");
511
512 req->type = REQ_READAHEAD;
513 req->fd = PerlIO_fileno (fh);
514 req->offset = offset;
515 req->length = length;
516 req->callback = SvREFCNT_inc (callback);
517
518 send_req (req);
519}
520
521void
522aio_stat(fh_or_path,callback=&PL_sv_undef)
523 SV * fh_or_path
524 SV * callback
525 ALIAS:
526 aio_stat = REQ_STAT
527 aio_lstat = REQ_LSTAT
528 CODE:
529{
530 aio_req req;
531
532 Newz (0, req, 1, aio_cb);
533
534 if (!req)
535 croak ("out of memory during aio_req allocation");
536
537 New (0, req->statdata, 1, Stat_t);
538
539 if (!req->statdata)
540 croak ("out of memory during aio_req->statdata allocation");
541
542 if (SvPOK (fh_or_path))
543 {
544 req->type = ix;
545 req->data = newSVsv (fh_or_path);
546 req->dataptr = SvPV_nolen (req->data);
547 }
548 else
549 {
550 req->type = REQ_FSTAT;
551 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
552 }
553
554 req->callback = SvREFCNT_inc (callback);
555
556 send_req (req);
557}
558
559void
560aio_unlink(pathname,callback=&PL_sv_undef)
561 SV * pathname
562 SV * callback
563 CODE:
564{
565 aio_req req;
566
567 Newz (0, req, 1, aio_cb);
568
569 if (!req)
570 croak ("out of memory during aio_req allocation");
571
572 req->type = REQ_UNLINK;
573 req->data = newSVsv (pathname);
574 req->dataptr = SvPV_nolen (req->data);
575 req->callback = SvREFCNT_inc (callback);
576
577 send_req (req);
578}
579
580void
581flush()
582 PROTOTYPE:
583 CODE:
584 while (nreqs)
585 {
586 poll_wait (); 2037 poll_wait ();
587 poll_cb (); 2038 RETVAL = poll_cb ();
588 }
589
590void
591poll()
592 PROTOTYPE:
593 CODE:
594 if (nreqs)
595 {
596 poll_wait ();
597 poll_cb ();
598 }
599
600int
601poll_fileno()
602 PROTOTYPE:
603 CODE:
604 RETVAL = respipe [0];
605 OUTPUT: 2039 OUTPUT:
606 RETVAL 2040 RETVAL
607 2041
608int 2042int
2043poll_fileno ()
2044 CODE:
2045 RETVAL = s_epipe_fd (&respipe);
2046 OUTPUT:
2047 RETVAL
2048
2049int
609poll_cb(...) 2050poll_cb (...)
610 PROTOTYPE: 2051 PROTOTYPE:
611 CODE: 2052 CODE:
612 RETVAL = poll_cb (); 2053 RETVAL = poll_cb ();
613 OUTPUT: 2054 OUTPUT:
614 RETVAL 2055 RETVAL
615 2056
616void 2057void
617poll_wait() 2058poll_wait ()
618 PROTOTYPE:
619 CODE: 2059 CODE:
620 if (nreqs)
621 poll_wait (); 2060 poll_wait ();
622 2061
623int 2062int
624nreqs() 2063nreqs ()
625 PROTOTYPE:
626 CODE: 2064 CODE:
627 RETVAL = nreqs; 2065 RETVAL = eio_nreqs ();
628 OUTPUT: 2066 OUTPUT:
629 RETVAL 2067 RETVAL
630 2068
2069int
2070nready ()
2071 CODE:
2072 RETVAL = eio_nready ();
2073 OUTPUT:
2074 RETVAL
2075
2076int
2077npending ()
2078 CODE:
2079 RETVAL = eio_npending ();
2080 OUTPUT:
2081 RETVAL
2082
2083int
2084nthreads ()
2085 CODE:
2086 RETVAL = eio_nthreads ();
2087 OUTPUT:
2088 RETVAL
2089
2090int
2091fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2092 CODE:
2093 RETVAL = posix_fadvise (fh, offset, length, advice);
2094 OUTPUT:
2095 RETVAL
2096
2097IV
2098sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2099 CODE:
2100 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2101 OUTPUT:
2102 RETVAL
2103
2104void
2105mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2106 PPCODE:
2107 sv_clear_foreign (scalar);
2108{
2109 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2110 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2111 if (addr == (void *)-1)
2112 XSRETURN_NO;
2113
2114 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2115
2116 if (!(prot & PROT_WRITE))
2117 SvREADONLY_on (scalar);
2118
2119 XSRETURN_YES;
2120}
2121
2122void
2123munmap (SV *scalar)
2124 CODE:
2125 sv_clear_foreign (scalar);
2126
2127SV *
2128mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2129 CODE:
2130{
2131 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2132 void *new;
2133
2134 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2135 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2136
2137 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2138
2139 RETVAL = &PL_sv_no;
2140
2141 if (new != (void *)-1)
2142 {
2143 RETVAL = new == (void *)mg->mg_ptr
2144 ? newSVpvn ("0 but true", 10)
2145 : &PL_sv_yes;
2146
2147 mg->mg_ptr = (char *)new;
2148 mg->mg_obj = (SV *)new_length;
2149
2150 SvPVX (scalar) = mg->mg_ptr;
2151 SvCUR_set (scalar, new_length);
2152 }
2153}
2154 OUTPUT:
2155 RETVAL
2156
2157int
2158madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2159 ALIAS:
2160 mprotect = 1
2161 CODE:
2162{
2163 STRLEN svlen;
2164 void *addr = SvPVbyte (scalar, svlen);
2165 STRLEN len = SvUV (length);
2166
2167 if (offset < 0)
2168 offset += svlen;
2169
2170 if (offset < 0 || offset > svlen)
2171 croak ("offset outside of scalar");
2172
2173 if (!SvOK (length) || len + offset > svlen)
2174 len = svlen - offset;
2175
2176 addr = (void *)(((intptr_t)addr) + offset);
2177 eio_page_align (&addr, &len);
2178
2179 switch (ix)
2180 {
2181 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2182 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2183 }
2184}
2185 OUTPUT:
2186 RETVAL
2187
2188int
2189munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2190 CODE:
2191{
2192 STRLEN svlen;
2193 void *addr = SvPVbyte (scalar, svlen);
2194 size_t len = SvUV (length);
2195
2196 if (offset < 0)
2197 offset += svlen;
2198
2199 if (offset < 0 || offset > svlen)
2200 croak ("offset outside of scalar");
2201
2202 if (!SvOK (length) || len + offset > svlen)
2203 len = svlen - offset;
2204
2205 addr = (void *)(((intptr_t)addr) + offset);
2206 eio_page_align (&addr, &len);
2207#if _POSIX_MEMLOCK_RANGE
2208 RETVAL = munlock (addr, len);
2209#else
2210 RETVAL = EIO_ENOSYS ();
2211#endif
2212}
2213 OUTPUT:
2214 RETVAL
2215
2216int
2217munlockall ()
2218 CODE:
2219#if _POSIX_MEMLOCK
2220 munlockall ();
2221#else
2222 RETVAL = EIO_ENOSYS ();
2223#endif
2224 OUTPUT:
2225 RETVAL
2226
2227int
2228splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2229 CODE:
2230{
2231#if HAVE_LINUX_SPLICE
2232 loff_t off_in_, off_out_;
2233 RETVAL = splice (
2234 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2235 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2236 length, flags
2237 );
2238#else
2239 RETVAL = EIO_ENOSYS ();
2240#endif
2241}
2242 OUTPUT:
2243 RETVAL
2244
2245int
2246tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2247 CODE:
2248#if HAVE_LINUX_SPLICE
2249 RETVAL = tee (rfh, wfh, length, flags);
2250#else
2251 RETVAL = EIO_ENOSYS ();
2252#endif
2253 OUTPUT:
2254 RETVAL
2255
2256int
2257pipesize (aio_rfd rfh, int new_size = -1)
2258 PROTOTYPE: $;$
2259 CODE:
2260#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2261 if (new_size >= 0)
2262 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2263 else
2264 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2265#else
2266 errno = ENOSYS;
2267 RETVAL = -1;
2268#endif
2269 OUTPUT:
2270 RETVAL
2271
2272void
2273pipe2 (int flags = 0)
2274 PROTOTYPE: ;$
2275 PPCODE:
2276{
2277 int fd[2];
2278 int res;
2279
2280 if (flags)
2281#if HAVE_PIPE2
2282 res = pipe2 (fd, flags);
2283#else
2284 res = (errno = ENOSYS, -1);
2285#endif
2286 else
2287 res = pipe (fd);
2288
2289 if (!res)
2290 {
2291 EXTEND (SP, 2);
2292 PUSHs (newmortalFH (fd[0], O_RDONLY));
2293 PUSHs (newmortalFH (fd[1], O_WRONLY));
2294 }
2295}
2296
2297void
2298eventfd (unsigned int initval = 0, int flags = 0)
2299 PPCODE:
2300{
2301 int fd;
2302#if HAVE_EVENTFD
2303 fd = eventfd (initval, flags);
2304#else
2305 fd = (errno = ENOSYS, -1);
2306#endif
2307
2308 XPUSHs (newmortalFH (fd, O_RDWR));
2309}
2310
2311void
2312timerfd_create (int clockid, int flags = 0)
2313 PPCODE:
2314{
2315 int fd;
2316#if HAVE_TIMERFD
2317 fd = timerfd_create (clockid, flags);
2318#else
2319 fd = (errno = ENOSYS, -1);
2320#endif
2321
2322 XPUSHs (newmortalFH (fd, O_RDWR));
2323}
2324
2325void
2326timerfd_settime (SV *fh, int flags, NV interval, NV value)
2327 PPCODE:
2328{
2329 int fd = s_fileno_croak (fh, 0);
2330#if HAVE_TIMERFD
2331 int res;
2332 struct itimerspec its, ots;
2333
2334 ts_set (&its.it_interval, interval);
2335 ts_set (&its.it_value , value);
2336 res = timerfd_settime (fd, flags, &its, &ots);
2337
2338 if (!res)
2339 {
2340 EXTEND (SP, 2);
2341 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2342 PUSHs (newSVnv (ts_get (&ots.it_value)));
2343 }
2344#else
2345 errno = ENOSYS;
2346#endif
2347}
2348
2349void
2350timerfd_gettime (SV *fh)
2351 PPCODE:
2352{
2353 int fd = s_fileno_croak (fh, 0);
2354#if HAVE_TIMERFD
2355 int res;
2356 struct itimerspec ots;
2357 res = timerfd_gettime (fd, &ots);
2358
2359 if (!res)
2360 {
2361 EXTEND (SP, 2);
2362 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2363 PUSHs (newSVnv (ts_get (&ots.it_value)));
2364 }
2365#else
2366 errno = ENOSYS;
2367#endif
2368}
2369
2370UV
2371get_fdlimit ()
2372 CODE:
2373#if HAVE_RLIMITS
2374 struct rlimit rl;
2375 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2376 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2377#endif
2378 XSRETURN_UNDEF;
2379 OUTPUT:
2380 RETVAL
2381
2382void
2383min_fdlimit (UV limit = 0x7fffffffU)
2384 CODE:
2385{
2386#if HAVE_RLIMITS
2387 struct rlimit rl;
2388 rlim_t orig_rlim_max;
2389 UV bit;
2390
2391 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2392 goto fail;
2393
2394 if (rl.rlim_cur == RLIM_INFINITY)
2395 XSRETURN_YES;
2396
2397 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2398
2399 if (rl.rlim_cur < limit)
2400 {
2401 rl.rlim_cur = limit;
2402
2403 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2404 rl.rlim_max = rl.rlim_cur;
2405 }
2406
2407 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2408 XSRETURN_YES;
2409
2410 if (errno == EPERM)
2411 {
2412 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2413 /* our limit overflows a system-wide limit */
2414 /* try an adaptive algorithm, but do not lower the hardlimit */
2415 rl.rlim_max = 0;
2416 for (bit = 0x40000000U; bit; bit >>= 1)
2417 {
2418 rl.rlim_max |= bit;
2419 rl.rlim_cur = rl.rlim_max;
2420
2421 /* nevr decrease the hard limit */
2422 if (rl.rlim_max < orig_rlim_max)
2423 break;
2424
2425 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2426 rl.rlim_max &= ~bit; /* too high, remove bit again */
2427 }
2428
2429 /* now, raise the soft limit to the max permitted */
2430 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2431 {
2432 rl.rlim_cur = rl.rlim_max;
2433 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2434 errno = EPERM;
2435 }
2436 }
2437#endif
2438 fail:
2439 XSRETURN_UNDEF;
2440}
2441
2442void _on_next_submit (SV *cb)
2443 CODE:
2444 SvREFCNT_dec (on_next_submit);
2445 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2446
2447PROTOTYPES: DISABLE
2448
2449MODULE = IO::AIO PACKAGE = IO::AIO::WD
2450
2451BOOT:
2452{
2453 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2454 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2455}
2456
2457void
2458DESTROY (SV *self)
2459 CODE:
2460{
2461 aio_wd wd = SvAIO_WD (self);
2462#if HAVE_AT
2463 {
2464 SV *callback = &PL_sv_undef;
2465 dREQ; /* clobbers next_pri :/ */
2466 next_pri = req->pri; /* restore next_pri */
2467 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2468 req->type = EIO_WD_CLOSE;
2469 req->wd = wd;
2470 REQ_SEND;
2471 }
2472#else
2473 eio_wd_close_sync (wd);
2474#endif
2475}
2476
2477MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2478
2479void
2480cancel (aio_req_ornot req)
2481 CODE:
2482 eio_cancel (req);
2483
2484void
2485cb (aio_req_ornot req, SV *callback = NO_INIT)
2486 PPCODE:
2487{
2488 if (GIMME_V != G_VOID)
2489 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2490
2491 if (items > 1)
2492 {
2493 SV *cb_cv = get_cb (callback);
2494
2495 SvREFCNT_dec (req->callback);
2496 req->callback = SvREFCNT_inc (cb_cv);
2497 }
2498}
2499
2500MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2501
2502void
2503add (aio_req grp, ...)
2504 PPCODE:
2505{
2506 int i;
2507
2508 if (grp->int1 == 2)
2509 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2510
2511 for (i = 1; i < items; ++i )
2512 {
2513 aio_req req;
2514
2515 if (GIMME_V != G_VOID)
2516 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2517
2518 req = SvAIO_REQ (ST (i));
2519
2520 if (req)
2521 eio_grp_add (grp, req);
2522 }
2523}
2524
2525void
2526cancel_subs (aio_req_ornot req)
2527 CODE:
2528 req_cancel_subs (req);
2529
2530void
2531result (aio_req grp, ...)
2532 CODE:
2533{
2534 int i;
2535 AV *av;
2536
2537 grp->errorno = errno;
2538
2539 av = newAV ();
2540 av_extend (av, items - 1);
2541
2542 for (i = 1; i < items; ++i )
2543 av_push (av, newSVsv (ST (i)));
2544
2545 SvREFCNT_dec (grp->sv1);
2546 grp->sv1 = (SV *)av;
2547}
2548
2549void
2550errno (aio_req grp, int errorno = errno)
2551 CODE:
2552 grp->errorno = errorno;
2553
2554void
2555limit (aio_req grp, int limit)
2556 CODE:
2557 eio_grp_limit (grp, limit);
2558
2559void
2560feed (aio_req grp, SV *callback = &PL_sv_undef)
2561 CODE:
2562{
2563 SvREFCNT_dec (grp->sv2);
2564 grp->sv2 = newSVsv (callback);
2565 grp->feed = aio_grp_feed;
2566
2567 if (grp->int2 <= 0)
2568 grp->int2 = 2;
2569
2570 eio_grp_limit (grp, grp->int2);
2571}
2572

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