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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.44 by root, Sat Oct 21 23:20:29 2006 UTC vs.
Revision 1.275 by root, Mon Mar 18 23:52:09 2019 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
8#include "perliol.h"
7 9
8#include "autoconf/config.h" 10#if !defined mg_findext
9 11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
10#include <pthread.h> 12#endif
11 13
12#include <stddef.h> 14#include <stddef.h>
15#include <stdlib.h>
13#include <errno.h> 16#include <errno.h>
14#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
15#include <sys/stat.h> 19#include <sys/stat.h>
16#include <limits.h> 20#include <limits.h>
17#include <unistd.h>
18#include <fcntl.h> 21#include <fcntl.h>
19#include <signal.h>
20#include <sched.h> 22#include <sched.h>
21 23
22#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
23# if __linux 25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
24# include <sys/sendfile.h> 88 #include <sys/select.h>
25# elif __freebsd 89 #include <unistd.h>
90 #include <utime.h>
91 #include <signal.h>
92
93 #define EIO_STRUCT_STAT Stat_t
94
95#endif
96
97/*****************************************************************************/
98
99#if __GNUC__ >= 3
100# define expect(expr,value) __builtin_expect ((expr),(value))
101#else
102# define expect(expr,value) (expr)
103#endif
104
105#define expect_false(expr) expect ((expr) != 0, 0)
106#define expect_true(expr) expect ((expr) != 0, 1)
107
108/*****************************************************************************/
109
110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
26# include <sys/socket.h> 113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
119# include <sys/mman.h>
120#endif
121
122#if HAVE_SYS_UIO_H
27# include <sys/uio.h> 123# include <sys/uio.h>
28# elif __hpux 124#endif
29# include <sys/socket.h> 125
30# elif __solaris /* not yet */ 126#if HAVE_ST_XTIMENSEC
127# define ATIMENSEC PL_statcache.st_atimensec
128# define MTIMENSEC PL_statcache.st_mtimensec
129# define CTIMENSEC PL_statcache.st_ctimensec
130#elif HAVE_ST_XTIMESPEC
131# define ATIMENSEC PL_statcache.st_atim.tv_nsec
132# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
133# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
134#else
135# define ATIMENSEC 0
136# define MTIMENSEC 0
137# define CTIMENSEC 0
138#endif
139
140#if HAVE_ST_BIRTHTIMENSEC
141# define BTIMESEC PL_statcache.st_birthtime
142# define BTIMENSEC PL_statcache.st_birthtimensec
143#elif HAVE_ST_BIRTHTIMESPEC
144# define BTIMESEC PL_statcache.st_birthtim.tv_sec
145# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
146#else
147# define BTIMESEC 0
148# define BTIMENSEC 0
149#endif
150
151#if HAVE_ST_GEN
152# define ST_GEN PL_statcache.st_gen
153#else
154# define ST_GEN 0
155#endif
156
157#include "schmorp.h"
158
159#if HAVE_EVENTFD
31# include <sys/sendfile.h> 160# include <sys/eventfd.h>
161#endif
162
163#if HAVE_TIMERFD
164# include <sys/timerfd.h>
165#endif
166
167#if HAVE_RLIMITS
168 #include <sys/time.h>
169 #include <sys/resource.h>
170#endif
171
172typedef SV SV8; /* byte-sv, used for argument-checking */
173typedef int aio_rfd; /* read file desriptor */
174typedef int aio_wfd; /* write file descriptor */
175
176static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
177
178#define EIO_REQ_MEMBERS \
179 SV *callback; \
180 SV *sv1, *sv2; \
181 SV *sv3, *sv4; \
182 STRLEN stroffset; \
183 SV *self;
184
185#define EIO_NO_WRAPPERS 1
186
187#include "libeio/eio.h"
188
189static int req_invoke (eio_req *req);
190#define EIO_FINISH(req) req_invoke (req)
191static void req_destroy (eio_req *grp);
192#define EIO_DESTROY(req) req_destroy (req)
193
194#include "libeio/eio.c"
195
196#if !HAVE_POSIX_FADVISE
197# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
198#endif
199
200#if !HAVE_POSIX_MADVISE
201# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
202#endif
203
204#ifndef MAP_ANONYMOUS
205# ifdef MAP_ANON
206# define MAP_ANONYMOUS MAP_ANON
32# else 207# else
33# error sendfile support requested but not available 208# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
34# endif 209# endif
35#endif 210#endif
36 211
37/* used for struct dirent, AIX doesn't provide it */ 212#ifndef makedev
38#ifndef NAME_MAX 213# define makedev(maj,min) (((maj) << 8) | (min))
39# define NAME_MAX 4096
40#endif 214#endif
215#ifndef major
216# define major(dev) ((dev) >> 8)
217#endif
218#ifndef minor
219# define minor(dev) ((dev) & 0xff)
220#endif
41 221
42#if __ia64 222/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
43# define STACKSIZE 65536 223#ifdef __sun
224# undef PAGESIZE
225#endif
226
227#if PAGESIZE <= 0
228# define PAGESIZE sysconf (_SC_PAGESIZE)
229#endif
230
231/*****************************************************************************/
232
233#if !_POSIX_MAPPED_FILES
234# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
235# define munmap(addr,length) EIO_ENOSYS ()
236#endif
237
238#if !_POSIX_MEMORY_PROTECTION
239# define mprotect(addr,len,prot) EIO_ENOSYS ()
240#endif
241
242#if !MREMAP_MAYMOVE
243# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
244#endif
245
246#define FOREIGN_MAGIC PERL_MAGIC_ext
247
248static int ecb_cold
249mmap_free (pTHX_ SV *sv, MAGIC *mg)
250{
251 int old_errno = errno;
252 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
253 errno = old_errno;
254
255 mg->mg_obj = 0; /* just in case */
256
257 SvREADONLY_off (sv);
258
259 if (SvPVX (sv) != mg->mg_ptr)
260 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
261
262 SvCUR_set (sv, 0);
263 SvPVX (sv) = 0;
264 SvOK_off (sv);
265
266 return 0;
267}
268
269static MGVTBL mmap_vtbl = {
270 0, 0, 0, 0, mmap_free
271};
272
273static int ecb_cold
274sysfree_free (pTHX_ SV *sv, MAGIC *mg)
275{
276 free (mg->mg_ptr);
277 mg->mg_obj = 0; /* just in case */
278
279 SvREADONLY_off (sv);
280
281 if (SvPVX (sv) != mg->mg_ptr)
282 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
283
284 SvCUR_set (sv, 0);
285 SvPVX (sv) = 0;
286 SvOK_off (sv);
287
288 return 0;
289}
290
291static MGVTBL sysfree_vtbl = {
292 0, 0, 0, 0, sysfree_free
293};
294
295/*****************************************************************************/
296
297/* helper: set scalar to foreign ptr with custom free */
298ecb_noinline
299static void
300sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
301{
302 sv_force_normal (sv);
303
304 /* we store the length in mg_obj, as namlen is I32 :/ */
305 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
306 ->mg_obj = (SV *)length;
307
308 SvUPGRADE (sv, SVt_PV); /* nop... */
309
310 if (SvLEN (sv))
311 Safefree (SvPVX (sv));
312
313 SvPVX (sv) = (char *)addr;
314 SvCUR_set (sv, length);
315 SvLEN_set (sv, 0);
316 SvPOK_only (sv);
317}
318
319static void
320sv_clear_foreign (SV *sv)
321{
322 /* todo: iterate over magic and only free ours, but of course */
323 /* the perl5porters will call that (correct) behaviour buggy */
324 sv_unmagic (sv, FOREIGN_MAGIC);
325}
326
327/*****************************************************************************/
328
329/* defines all sorts of constants to 0 unless they are already defined */
330/* also provides const_iv_ and const_niv_ macros for them */
331#include "def0.h"
332
333/*****************************************************************************/
334
335static void
336fiemap (eio_req *req)
337{
338 req->result = -1;
339
340#if HAVE_FIEMAP
341 /* assume some c99 */
342 struct fiemap *fiemap = 0;
343 size_t end_offset;
344 int count = req->int3;
345
346 req->flags |= EIO_FLAG_PTR1_FREE;
347
348 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
349 /* increase in 3.5kb steps */
350 if (count < 0)
351 count = 8;
352
353 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
354 errno = ENOMEM;
355 if (!fiemap)
356 return;
357
358 req->ptr1 = fiemap;
359
360 fiemap->fm_start = req->offs;
361 fiemap->fm_length = req->size;
362 fiemap->fm_flags = req->int2;
363 fiemap->fm_extent_count = count;
364
365 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
366 return;
367
368 if (req->int3 >= 0 /* not autosizing */
369 || !fiemap->fm_mapped_extents /* no more extents */
370 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
371 goto done;
372
373 /* else we have to loop -
374 * it would be tempting (actually I tried that first) to just query the
375 * number of extents needed, but linux often feels like not returning all
376 * extents, without telling us it left any out. this complicates
377 * this quite a bit.
378 */
379
380 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
381
382 for (;;)
383 {
384 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
385 char scratch[3072];
386 struct fiemap *incmap = (struct fiemap *)scratch;
387
388 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
389 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
390 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
391 incmap->fm_flags = fiemap->fm_flags;
392 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
393
394 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
395 return;
396
397 if (!incmap->fm_mapped_extents)
398 goto done;
399
400 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
401 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
402 errno = ENOMEM;
403 if (!fiemap)
404 return;
405
406 req->ptr1 = fiemap;
407
408 for (count = 0; count < incmap->fm_mapped_extents; ++count)
409 {
410 struct fiemap_extent *e = incmap->fm_extents + count;
411
412 if (e->fe_logical + e->fe_length >= end_offset)
413 goto done;
414
415 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
416
417 if (e->fe_flags & FIEMAP_EXTENT_LAST)
418 goto done;
419
420 }
421 }
422
423done:
424 req->result = 0;
425
44#else 426#else
45# define STACKSIZE 8192 427 errno = ENOSYS;
428#endif
429}
430
431/*****************************************************************************/
432
433static int close_fd; /* dummy fd to close fds via dup2 */
434
435#if HAVE_STATX
436static struct statx stx;
437#define statx_offsetof(member) offsetof (struct statx, member)
438#define eio__statx statx
439#else
440#define statx_offsetof(member) 0
441#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
46#endif 442#endif
47 443
48enum { 444enum {
49 REQ_QUIT, 445 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
50 REQ_OPEN, REQ_CLOSE,
51 REQ_READ, REQ_WRITE, REQ_READAHEAD,
52 REQ_SENDFILE,
53 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54 REQ_FSYNC, REQ_FDATASYNC,
55 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56 REQ_READDIR,
57 REQ_LINK, REQ_SYMLINK,
58 REQ_GROUP,
59}; 446};
60 447
61#define AIO_REQ_KLASS "IO::AIO::REQ"
62#define AIO_GRP_KLASS "IO::AIO::GRP"
63
64typedef struct aio_cb
65{
66 struct aio_cb *grp, *grp_prev, *grp_next;
67
68 struct aio_cb *volatile next;
69
70 SV *self; /* the perl counterpart of this request, if any */
71
72 SV *data, *callback;
73 SV *fh, *fh2;
74 void *dataptr, *data2ptr;
75 Stat_t *statdata;
76 off_t offset;
77 size_t length;
78 ssize_t result;
79
80 int type;
81 int fd, fd2;
82 int errorno;
83 STRLEN dataoffset;
84 mode_t mode; /* open */
85 unsigned char cancelled;
86} aio_cb;
87
88typedef aio_cb *aio_req; 448typedef eio_req *aio_req;
89typedef aio_cb *aio_req_ornot; 449typedef eio_req *aio_req_ornot;
90typedef aio_cb *aio_group; 450typedef eio_wd aio_wd;
91 451
92static int started, wanted; 452static SV *on_next_submit;
93static volatile int nreqs; 453static int next_pri = EIO_PRI_DEFAULT;
94static int max_outstanding = 1<<30; 454static int max_outstanding;
95static int respipe [2];
96 455
97static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; 456static s_epipe respipe;
98static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
99static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
100 457
101static volatile aio_req reqs, reqe; /* queue start, queue end */ 458static void req_destroy (aio_req req);
102static volatile aio_req ress, rese; /* queue start, queue end */ 459static void req_cancel (aio_req req);
460
461static void
462want_poll (void)
463{
464 /* write a dummy byte to the pipe so fh becomes ready */
465 s_epipe_signal (&respipe);
466}
467
468static void
469done_poll (void)
470{
471 /* read any signals sent by the worker threads */
472 s_epipe_drain (&respipe);
473}
103 474
104/* must be called at most once */ 475/* must be called at most once */
105static SV *req_sv (aio_req req, const char *klass) 476ecb_noinline
477static SV *
478req_sv (aio_req req, HV *stash)
106{ 479{
480 if (!req->self)
481 {
107 req->self = (SV *)newHV (); 482 req->self = (SV *)newHV ();
108 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 483 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
484 }
109 485
110 return sv_2mortal (sv_bless (newRV_noinc (req->self), gv_stashpv (klass, 1))); 486 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
111} 487}
112 488
113static aio_req SvAIO_REQ (SV *sv, const char *klass) 489static SV *
490newSVaio_wd (aio_wd wd)
114{ 491{
115 if (!sv_derived_from (sv, klass) || !SvROK (sv)) 492 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
493}
494
495ecb_noinline
496static aio_req
497SvAIO_REQ (SV *sv)
498{
499 MAGIC *mg;
500
501 if (!SvROK (sv)
502 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
503 || (SvSTASH (SvRV (sv)) != aio_grp_stash
504 && SvSTASH (SvRV (sv)) != aio_req_stash
505 && !sv_derived_from (sv, "IO::AIO::REQ")))
116 croak ("object of class %s expected", klass); 506 croak ("object of class IO::AIO::REQ expected");
117 507
118 MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 508 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
119 509
120 return mg ? (aio_req)mg->mg_ptr : 0; 510 return mg ? (aio_req)mg->mg_ptr : 0;
121} 511}
122 512
123static void req_free (aio_req req) 513static aio_wd
514SvAIO_WD (SV *sv)
515{
516 if (!SvROK (sv)
517 || SvTYPE (SvRV (sv)) != SVt_PVMG
518 || SvSTASH (SvRV (sv)) != aio_wd_stash)
519 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
520
521 return (aio_wd)(long)SvIVX (SvRV (sv));
522}
523
524static SV *
525newmortalFH (int fd, int flags)
526{
527 if (fd < 0)
528 return &PL_sv_undef;
529
530 GV *gv = (GV *)sv_newmortal ();
531 char sym[64];
532 int symlen;
533
534 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
535 gv_init (gv, aio_stash, sym, symlen, 0);
536
537 symlen = snprintf (
538 sym,
539 sizeof (sym),
540 "%s&=%d",
541 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
542 fd
543 );
544
545 return do_open (gv, sym, symlen, 0, 0, 0, 0)
546 ? (SV *)gv : &PL_sv_undef;
547}
548
549static void
550aio_grp_feed (aio_req grp)
551{
552 if (grp->sv2 && SvOK (grp->sv2))
553 {
554 dSP;
555
556 ENTER;
557 SAVETMPS;
558 PUSHMARK (SP);
559 XPUSHs (req_sv (grp, aio_grp_stash));
560 PUTBACK;
561 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
562 SPAGAIN;
563 FREETMPS;
564 LEAVE;
565 }
566}
567
568ecb_noinline
569static void
570req_submit (eio_req *req)
571{
572 eio_submit (req);
573
574 if (expect_false (on_next_submit))
575 {
576 dSP;
577 SV *cb = sv_2mortal (on_next_submit);
578
579 on_next_submit = 0;
580
581 PUSHMARK (SP);
582 PUTBACK;
583 call_sv (cb, G_DISCARD | G_EVAL);
584 }
585}
586
587static int
588req_invoke (eio_req *req)
589{
590 if (req->flags & FLAG_SV2_RO_OFF)
591 SvREADONLY_off (req->sv2);
592
593 if (!EIO_CANCELLED (req) && req->callback)
594 {
595 dSP;
596 static SV *sv_result_cache; /* caches the result integer SV */
597 SV *sv_result;
598
599 ENTER;
600 SAVETMPS;
601 PUSHMARK (SP);
602 EXTEND (SP, 1);
603
604 /* do not recreate the result IV from scratch each time */
605 if (expect_true (sv_result_cache))
606 {
607 sv_result = sv_result_cache; sv_result_cache = 0;
608 SvIV_set (sv_result, req->result);
609 SvIOK_only (sv_result);
610 }
611 else
612 {
613 sv_result = newSViv (req->result);
614 SvREADONLY_on (sv_result);
615 }
616
617 switch (req->type)
618 {
619 case EIO_WD_OPEN:
620 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
621 break;
622
623 case EIO_READDIR:
624 {
625 SV *rv = &PL_sv_undef;
626
627 if (req->result >= 0)
628 {
629 int i;
630 char *names = (char *)req->ptr2;
631 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
632 AV *av = newAV ();
633
634 av_extend (av, req->result - 1);
635
636 for (i = 0; i < req->result; ++i)
637 {
638 if (req->int1 & EIO_READDIR_DENTS)
639 {
640 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
641
642 if (req->int1 & EIO_READDIR_CUSTOM2)
643 {
644 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
645 AV *avent = newAV ();
646
647 av_extend (avent, 2);
648
649 if (!sv_type [ent->type])
650 {
651 sv_type [ent->type] = newSViv (ent->type);
652 SvREADONLY_on (sv_type [ent->type]);
653 }
654
655 av_store (avent, 0, namesv);
656 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
657 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
658
659 av_store (av, i, newRV_noinc ((SV *)avent));
660 }
661 else
662 av_store (av, i, namesv);
663
664 ++ent;
665 }
666 else
667 {
668 SV *name = newSVpv (names, 0);
669 av_store (av, i, name);
670 names += SvCUR (name) + 1;
671 }
672 }
673
674 rv = sv_2mortal (newRV_noinc ((SV *)av));
675 }
676
677 PUSHs (rv);
678
679 if (req->int1 & EIO_READDIR_CUSTOM1)
680 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
681 }
682 break;
683
684 case EIO_OPEN:
685 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
686 break;
687
688 case EIO_STATVFS:
689 case EIO_FSTATVFS:
690 {
691 SV *rv = &PL_sv_undef;
692
693#ifndef _WIN32
694 if (req->result >= 0)
695 {
696 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
697 HV *hv = newHV ();
698 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
699 * chooses to make it a struct.
700 */
701 unsigned long fsid = 0;
702 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
703
704 rv = sv_2mortal (newRV_noinc ((SV *)hv));
705
706 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
707 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
708 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
709 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
710 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
711 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
712 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
713 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
714 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
715 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
716 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
717 }
718#endif
719
720 PUSHs (rv);
721 }
722
723 break;
724
725 case EIO_GROUP:
726 req->int1 = 2; /* mark group as finished */
727
728 if (req->sv1)
729 {
730 int i;
731 AV *av = (AV *)req->sv1;
732
733 EXTEND (SP, AvFILL (av) + 1);
734 for (i = 0; i <= AvFILL (av); ++i)
735 PUSHs (*av_fetch (av, i, 0));
736 }
737 break;
738
739 case EIO_NOP:
740 case EIO_BUSY:
741 break;
742
743 case EIO_READLINK:
744 case EIO_REALPATH:
745 if (req->result > 0)
746 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
747 break;
748
749 case EIO_STAT:
750 case EIO_LSTAT:
751 case EIO_FSTAT:
752 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
753
754 if (!(PL_laststatval = req->result))
755 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
756 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
757
758 PUSHs (sv_result);
759 break;
760
761 case EIO_SEEK:
762 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
763 break;
764
765 case EIO_READ:
766 {
767 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
768 *SvEND (req->sv2) = 0;
769 SvPOK_only (req->sv2);
770 SvSETMAGIC (req->sv2);
771 PUSHs (sv_result);
772 }
773 break;
774
775 case EIO_SLURP:
776 {
777 if (req->result >= 0)
778 {
779 /* if length was originally not known, we steal the malloc'ed memory */
780 if (req->flags & EIO_FLAG_PTR2_FREE)
781 {
782 req->flags &= ~EIO_FLAG_PTR2_FREE;
783 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
784 }
785 else
786 {
787 SvCUR_set (req->sv2, req->result);
788 *SvEND (req->sv2) = 0;
789 SvPOK_only (req->sv2);
790 }
791
792 SvSETMAGIC (req->sv2);
793 }
794
795 PUSHs (sv_result);
796 }
797 break;
798
799 case EIO_CUSTOM:
800 if (req->feed == fiemap)
801 {
802#if HAVE_FIEMAP
803 if (!req->result)
804 {
805 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
806
807 if (fiemap->fm_extent_count)
808 {
809 AV *av = newAV ();
810 int i;
811
812 while (fiemap->fm_mapped_extents)
813 {
814 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
815 AV *ext_av = newAV ();
816
817 av_store (ext_av, 3, newSVuv (extent->fe_flags));
818 av_store (ext_av, 2, newSVval64 (extent->fe_length));
819 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
820 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
821
822 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
823 }
824
825 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
826 }
827 else
828 {
829 SvIV_set (sv_result, fiemap->fm_mapped_extents);
830 PUSHs (sv_result);
831 }
832 }
833#endif
834 }
835 else
836 PUSHs (sv_result);
837 break;
838
839#if 0
840 case EIO_CLOSE:
841 PerlIOUnix_refcnt_dec (req->int1);
842 break;
843#endif
844
845 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
846 if (req->result > 0)
847 SvIV_set (sv_result, 0);
848 /* FALLTHROUGH */
849
850 default:
851 PUSHs (sv_result);
852 break;
853 }
854
855 errno = req->errorno;
856
857 PUTBACK;
858 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
859 SPAGAIN;
860
861 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
862 SvREFCNT_dec (sv_result);
863 else
864 sv_result_cache = sv_result;
865
866 FREETMPS;
867 LEAVE;
868
869 PUTBACK;
870 }
871
872 return !!SvTRUE (ERRSV);
873}
874
875static void
876req_destroy (aio_req req)
124{ 877{
125 if (req->self) 878 if (req->self)
126 { 879 {
127 sv_unmagic (req->self, PERL_MAGIC_ext); 880 sv_unmagic (req->self, PERL_MAGIC_ext);
128 SvREFCNT_dec (req->self); 881 SvREFCNT_dec (req->self);
129 } 882 }
130 883
131 if (req->data)
132 SvREFCNT_dec (req->data);
133
134 if (req->fh)
135 SvREFCNT_dec (req->fh); 884 SvREFCNT_dec (req->sv1);
136
137 if (req->fh2)
138 SvREFCNT_dec (req->fh2); 885 SvREFCNT_dec (req->sv2);
139 886 SvREFCNT_dec (req->sv3);
140 if (req->statdata) 887 SvREFCNT_dec (req->sv4);
141 Safefree (req->statdata);
142
143 if (req->callback)
144 SvREFCNT_dec (req->callback); 888 SvREFCNT_dec (req->callback);
145 889
146 if (req->type == REQ_READDIR && req->result >= 0)
147 free (req->data2ptr);
148
149 Safefree (req); 890 free (req);
150} 891}
151 892
152static void 893static void
894req_cancel_subs (aio_req grp)
895{
896 if (grp->type != EIO_GROUP)
897 return;
898
899 SvREFCNT_dec (grp->sv2);
900 grp->sv2 = 0;
901
902 eio_grp_cancel (grp);
903}
904
905ecb_cold
906static void
907create_respipe (void)
908{
909 if (s_epipe_renew (&respipe))
910 croak ("IO::AIO: unable to initialize result pipe");
911}
912
913static void
153poll_wait () 914poll_wait (void)
154{ 915{
155 if (nreqs && !ress) 916 while (eio_nreqs ())
156 { 917 {
157 fd_set rfd; 918 int size;
158 FD_ZERO(&rfd);
159 FD_SET(respipe [0], &rfd);
160 919
161 select (respipe [0] + 1, &rfd, 0, 0, 0); 920 X_LOCK (EIO_POOL->reslock);
921 size = EIO_POOL->res_queue.size;
922 X_UNLOCK (EIO_POOL->reslock);
923
924 if (size)
925 return;
926
927 etp_maybe_start_thread (EIO_POOL);
928
929 s_epipe_wait (&respipe);
162 } 930 }
163} 931}
164 932
165static int 933static int
166poll_cb () 934poll_cb (void)
167{ 935{
168 dSP;
169 int count = 0;
170 int do_croak = 0;
171 aio_req req;
172
173 for (;;) 936 for (;;)
174 { 937 {
175 pthread_mutex_lock (&reslock); 938 int res = eio_poll ();
176 req = ress;
177 939
178 if (req) 940 if (res > 0)
941 croak (0);
942
943 if (!max_outstanding || max_outstanding > eio_nreqs ())
944 return res;
945
946 poll_wait ();
947 }
948}
949
950ecb_cold
951static void
952reinit (void)
953{
954 create_respipe ();
955
956 if (eio_init (want_poll, done_poll) < 0)
957 croak ("IO::AIO: unable to initialise eio library");
958}
959
960/*****************************************************************************/
961
962static SV *
963get_cb (SV *cb_sv)
964{
965 SvGETMAGIC (cb_sv);
966 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
967}
968
969ecb_noinline
970static aio_req ecb_noinline
971dreq (SV *callback)
972{
973 SV *cb_cv;
974 aio_req req;
975 int req_pri = next_pri;
976 next_pri = EIO_PRI_DEFAULT;
977
978 cb_cv = get_cb (callback);
979
980 req = calloc (sizeof (*req), 1);
981 if (!req)
982 croak ("out of memory during eio_req allocation");
983
984 req->callback = SvREFCNT_inc (cb_cv);
985 req->pri = req_pri;
986
987 return req;
988}
989
990#define dREQ \
991 aio_req req = dreq (callback); \
992
993#define REQ_SEND \
994 PUTBACK; \
995 req_submit (req); \
996 SPAGAIN; \
997 \
998 if (GIMME_V != G_VOID) \
999 XPUSHs (req_sv (req, aio_req_stash));
1000
1001/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
1002ecb_inline
1003void
1004req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
1005{
1006 if (expect_false (SvROK (path)))
1007 {
1008 SV *rv = SvRV (path);
1009 SV *wdob;
1010
1011 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
179 { 1012 {
180 ress = req->next; 1013 path = AvARRAY (rv)[1];
1014 wdob = AvARRAY (rv)[0];
181 1015
182 if (!ress) 1016 if (SvOK (wdob))
183 { 1017 {
184 /* read any signals sent by the worker threads */ 1018 *wd = SvAIO_WD (wdob);
185 char buf [32]; 1019 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
186 while (read (respipe [0], buf, 32) == 32)
187 ;
188
189 rese = 0;
190 }
191 }
192
193 pthread_mutex_unlock (&reslock);
194
195 if (!req)
196 break;
197
198 nreqs--;
199
200 if (req->type == REQ_QUIT)
201 started--;
202 else
203 {
204 int errorno = errno;
205 errno = req->errorno;
206
207 if (req->type == REQ_READ)
208 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
209
210 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
211 SvREADONLY_off (req->data);
212
213 if (req->statdata)
214 {
215 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
216 PL_laststatval = req->result;
217 PL_statcache = *(req->statdata);
218 }
219
220 ENTER;
221 PUSHMARK (SP);
222
223 if (req->type == REQ_READDIR)
224 {
225 SV *rv = &PL_sv_undef;
226
227 if (req->result >= 0)
228 {
229 char *buf = req->data2ptr;
230 AV *av = newAV ();
231
232 while (req->result)
233 {
234 SV *sv = newSVpv (buf, 0);
235
236 av_push (av, sv);
237 buf += SvCUR (sv) + 1;
238 req->result--;
239 }
240
241 rv = sv_2mortal (newRV_noinc ((SV *)av));
242 }
243
244 XPUSHs (rv);
245 } 1020 }
246 else 1021 else
247 { 1022 *wd = EIO_INVALID_WD;
248 XPUSHs (sv_2mortal (newSViv (req->result)));
249
250 if (req->type == REQ_OPEN)
251 {
252 /* convert fd to fh */
253 SV *fh;
254
255 PUTBACK;
256 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
257 SPAGAIN;
258
259 fh = SvREFCNT_inc (POPs);
260
261 PUSHMARK (SP);
262 XPUSHs (sv_2mortal (fh));
263 }
264 }
265
266 if (SvOK (req->callback) && !req->cancelled)
267 {
268 PUTBACK;
269 call_sv (req->callback, G_VOID | G_EVAL);
270 SPAGAIN;
271
272 if (SvTRUE (ERRSV))
273 {
274 req_free (req);
275 croak (0);
276 }
277 }
278
279 LEAVE;
280
281 errno = errorno;
282 count++;
283 } 1023 }
284 1024 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
285 req_free (req);
286 }
287
288 return count;
289}
290
291static void *aio_proc(void *arg);
292
293static void
294start_thread (void)
295{
296 sigset_t fullsigset, oldsigset;
297 pthread_t tid;
298 pthread_attr_t attr;
299
300 pthread_attr_init (&attr);
301 pthread_attr_setstacksize (&attr, STACKSIZE);
302 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
303
304 sigfillset (&fullsigset);
305 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
306
307 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
308 started++;
309
310 sigprocmask (SIG_SETMASK, &oldsigset, 0);
311}
312
313static void
314req_send (aio_req req)
315{
316 while (started < wanted && nreqs >= started)
317 start_thread ();
318
319 nreqs++;
320
321 pthread_mutex_lock (&reqlock);
322
323 req->next = 0;
324
325 if (reqe)
326 {
327 reqe->next = req;
328 reqe = req;
329 }
330 else
331 reqe = reqs = req;
332
333 pthread_cond_signal (&reqwait);
334 pthread_mutex_unlock (&reqlock);
335
336 if (nreqs > max_outstanding)
337 for (;;)
338 {
339 poll_cb ();
340
341 if (nreqs <= max_outstanding)
342 break;
343
344 poll_wait ();
345 }
346}
347
348static void
349end_thread (void)
350{
351 aio_req req;
352 Newz (0, req, 1, aio_cb);
353 req->type = REQ_QUIT;
354
355 req_send (req);
356}
357
358static void min_parallel (int nthreads)
359{
360 if (wanted < nthreads)
361 wanted = nthreads;
362}
363
364static void max_parallel (int nthreads)
365{
366 int cur = started;
367
368 if (wanted > nthreads)
369 wanted = nthreads;
370
371 while (cur > wanted)
372 {
373 end_thread ();
374 cur--;
375 }
376
377 while (started > wanted)
378 {
379 poll_wait ();
380 poll_cb ();
381 }
382}
383
384static void create_pipe ()
385{
386 if (pipe (respipe))
387 croak ("unable to initialize result pipe");
388
389 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
390 croak ("cannot set result pipe to nonblocking mode");
391
392 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
393 croak ("cannot set result pipe to nonblocking mode");
394}
395
396/*****************************************************************************/
397/* work around various missing functions */
398
399#if !HAVE_PREADWRITE
400# define pread aio_pread
401# define pwrite aio_pwrite
402
403/*
404 * make our pread/pwrite safe against themselves, but not against
405 * normal read/write by using a mutex. slows down execution a lot,
406 * but that's your problem, not mine.
407 */
408static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
409
410static ssize_t
411pread (int fd, void *buf, size_t count, off_t offset)
412{
413 ssize_t res;
414 off_t ooffset;
415
416 pthread_mutex_lock (&preadwritelock);
417 ooffset = lseek (fd, 0, SEEK_CUR);
418 lseek (fd, offset, SEEK_SET);
419 res = read (fd, buf, count);
420 lseek (fd, ooffset, SEEK_SET);
421 pthread_mutex_unlock (&preadwritelock);
422
423 return res;
424}
425
426static ssize_t
427pwrite (int fd, void *buf, size_t count, off_t offset)
428{
429 ssize_t res;
430 off_t ooffset;
431
432 pthread_mutex_lock (&preadwritelock);
433 ooffset = lseek (fd, 0, SEEK_CUR);
434 lseek (fd, offset, SEEK_SET);
435 res = write (fd, buf, count);
436 lseek (fd, offset, SEEK_SET);
437 pthread_mutex_unlock (&preadwritelock);
438
439 return res;
440}
441#endif
442
443#if !HAVE_FDATASYNC
444# define fdatasync fsync
445#endif
446
447#if !HAVE_READAHEAD
448# define readahead aio_readahead
449
450static ssize_t
451readahead (int fd, off_t offset, size_t count)
452{
453 char readahead_buf[4096];
454
455 while (count > 0)
456 {
457 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
458
459 pread (fd, readahead_buf, len, offset);
460 offset += len;
461 count -= len;
462 }
463
464 errno = 0;
465}
466#endif
467
468#if !HAVE_READDIR_R
469# define readdir_r aio_readdir_r
470
471static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
472
473static int
474readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
475{
476 struct dirent *e;
477 int errorno;
478
479 pthread_mutex_lock (&readdirlock);
480
481 e = readdir (dirp);
482 errorno = errno;
483
484 if (e)
485 {
486 *res = ent;
487 strcpy (ent->d_name, e->d_name);
488 }
489 else
490 *res = 0;
491
492 pthread_mutex_unlock (&readdirlock);
493
494 errno = errorno;
495 return e ? 0 : -1;
496}
497#endif
498
499/* sendfile always needs emulation */
500static ssize_t
501sendfile_ (int ofd, int ifd, off_t offset, size_t count)
502{
503 ssize_t res;
504
505 if (!count)
506 return 0;
507
508#if HAVE_SENDFILE
509# if __linux
510 res = sendfile (ofd, ifd, &offset, count);
511
512# elif __freebsd
513 /*
514 * Of course, the freebsd sendfile is a dire hack with no thoughts
515 * wasted on making it similar to other I/O functions.
516 */
517 {
518 off_t sbytes;
519 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
520
521 if (res < 0 && sbytes)
522 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
523 res = sbytes;
524 }
525
526# elif __hpux
527 res = sendfile (ofd, ifd, offset, count, 0, 0);
528
529# elif __solaris
530 {
531 struct sendfilevec vec;
532 size_t sbytes;
533
534 vec.sfv_fd = ifd;
535 vec.sfv_flag = 0;
536 vec.sfv_off = offset;
537 vec.sfv_len = count;
538
539 res = sendfilev (ofd, &vec, 1, &sbytes);
540
541 if (res < 0 && sbytes)
542 res = sbytes;
543 }
544
545# endif
546#else
547 res = -1;
548 errno = ENOSYS;
549#endif
550
551 if (res < 0
552 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
553#if __solaris
554 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
555#endif
556 )
557 )
558 {
559 /* emulate sendfile. this is a major pain in the ass */
560 char buf[4096];
561 res = 0;
562
563 while (count)
564 { 1025 {
565 ssize_t cnt; 1026 *wd = (aio_wd)(long)SvIVX (rv);
566 1027 *wdsv = SvREFCNT_inc_NN (rv);
567 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); 1028 *ptr = ".";
568 1029 return; /* path set to "." */
569 if (cnt <= 0)
570 {
571 if (cnt && !res) res = -1;
572 break;
573 }
574
575 cnt = write (ofd, buf, cnt);
576
577 if (cnt <= 0)
578 {
579 if (cnt && !res) res = -1;
580 break;
581 }
582
583 offset += cnt;
584 res += cnt;
585 count -= cnt;
586 }
587 }
588
589 return res;
590}
591
592/* read a full directory */
593static int
594scandir_ (const char *path, void **namesp)
595{
596 DIR *dirp = opendir (path);
597 union
598 {
599 struct dirent d;
600 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
601 } u;
602 struct dirent *entp;
603 char *name, *names;
604 int memlen = 4096;
605 int memofs = 0;
606 int res = 0;
607 int errorno;
608
609 if (!dirp)
610 return -1;
611
612 names = malloc (memlen);
613
614 for (;;)
615 {
616 errno = 0, readdir_r (dirp, &u.d, &entp);
617
618 if (!entp)
619 break;
620
621 name = entp->d_name;
622
623 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
624 {
625 int len = strlen (name) + 1;
626
627 res++;
628
629 while (memofs + len > memlen)
630 {
631 memlen *= 2;
632 names = realloc (names, memlen);
633 if (!names)
634 break;
635 }
636
637 memcpy (names + memofs, name, len);
638 memofs += len;
639 }
640 }
641
642 errorno = errno;
643 closedir (dirp);
644
645 if (errorno)
646 {
647 free (names);
648 errno = errorno;
649 res = -1;
650 }
651
652 *namesp = (void *)names;
653 return res;
654}
655
656/*****************************************************************************/
657
658static void *
659aio_proc (void *thr_arg)
660{
661 aio_req req;
662 int type;
663
664 do
665 {
666 pthread_mutex_lock (&reqlock);
667
668 for (;;)
669 {
670 req = reqs;
671
672 if (reqs)
673 {
674 reqs = reqs->next;
675 if (!reqs) reqe = 0;
676 }
677
678 if (req)
679 break;
680
681 pthread_cond_wait (&reqwait, &reqlock);
682 }
683
684 pthread_mutex_unlock (&reqlock);
685
686 errno = 0; /* strictly unnecessary */
687
688 if (!req->cancelled)
689 switch (req->type)
690 {
691 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
692 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
693
694 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
695 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
696
697 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
698 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
699 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
700
701 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
702 case REQ_CLOSE: req->result = close (req->fd); break;
703 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
704 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
705 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
706 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
707 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
708
709 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
710 case REQ_FSYNC: req->result = fsync (req->fd); break;
711 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
712
713 case REQ_QUIT:
714 break;
715
716 default:
717 req->result = ENOSYS;
718 break;
719 }
720
721 req->errorno = errno;
722
723 pthread_mutex_lock (&reslock);
724
725 req->next = 0;
726
727 if (rese)
728 {
729 rese->next = req;
730 rese = req;
731 } 1030 }
732 else 1031 else
733 { 1032 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
734 rese = ress = req;
735
736 /* write a dummy byte to the pipe so fh becomes ready */
737 write (respipe [1], &respipe, 1);
738 }
739
740 pthread_mutex_unlock (&reslock);
741 } 1033 }
742 while (type != REQ_QUIT);
743 1034
744 return 0; 1035 *pathsv = newSVsv (path);
1036 *ptr = SvPVbyte_nolen (*pathsv);
1037}
1038
1039ecb_noinline
1040static void
1041req_set_path1 (aio_req req, SV *path)
1042{
1043 req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1044}
1045
1046ecb_noinline
1047static void
1048req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1049{
1050 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1051
1052 switch (SvTYPE (rv))
1053 {
1054 case SVt_PVIO:
1055 case SVt_PVLV:
1056 case SVt_PVGV:
1057 req->type = type_fh;
1058 req->sv1 = newSVsv (fh_or_path);
1059 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1060 break;
1061
1062 default:
1063 req->type = type_path;
1064 req_set_path1 (req, fh_or_path);
1065 break;
1066 }
745} 1067}
746 1068
747/*****************************************************************************/ 1069/*****************************************************************************/
748 1070
749static void atfork_prepare (void) 1071static void
1072ts_set (struct timespec *ts, NV value)
750{ 1073{
751 pthread_mutex_lock (&reqlock); 1074 ts->tv_sec = value;
752 pthread_mutex_lock (&reslock); 1075 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
753#if !HAVE_PREADWRITE
754 pthread_mutex_lock (&preadwritelock);
755#endif
756#if !HAVE_READDIR_R
757 pthread_mutex_lock (&readdirlock);
758#endif
759} 1076}
760 1077
761static void atfork_parent (void) 1078static NV
1079ts_get (const struct timespec *ts)
762{ 1080{
763#if !HAVE_READDIR_R 1081 return ts->tv_sec + ts->tv_nsec * 1e-9;
764 pthread_mutex_unlock (&readdirlock);
765#endif
766#if !HAVE_PREADWRITE
767 pthread_mutex_unlock (&preadwritelock);
768#endif
769 pthread_mutex_unlock (&reslock);
770 pthread_mutex_unlock (&reqlock);
771} 1082}
772 1083
773static void atfork_child (void) 1084/*****************************************************************************/
774{
775 aio_req prv;
776 1085
777 started = 0; 1086XS(boot_IO__AIO) ecb_cold;
778 1087
779 while (reqs)
780 {
781 prv = reqs;
782 reqs = prv->next;
783 req_free (prv);
784 }
785
786 reqs = reqe = 0;
787
788 while (ress)
789 {
790 prv = ress;
791 ress = prv->next;
792 req_free (prv);
793 }
794
795 ress = rese = 0;
796
797 close (respipe [0]);
798 close (respipe [1]);
799 create_pipe ();
800
801 atfork_parent ();
802}
803
804#define dREQ \
805 aio_req req; \
806 \
807 if (SvOK (callback) && !SvROK (callback)) \
808 croak ("callback must be undef or of reference type"); \
809 \
810 Newz (0, req, 1, aio_cb); \
811 if (!req) \
812 croak ("out of memory during aio_req allocation"); \
813 \
814 req->callback = newSVsv (callback)
815
816#define REQ_SEND \
817 req_send (req); \
818 \
819 if (GIMME_V != G_VOID) \
820 XPUSHs (req_sv (req, AIO_REQ_KLASS));
821
822MODULE = IO::AIO PACKAGE = IO::AIO 1088MODULE = IO::AIO PACKAGE = IO::AIO
823 1089
824PROTOTYPES: ENABLE 1090PROTOTYPES: ENABLE
825 1091
826BOOT: 1092BOOT:
827{ 1093{
1094 static const struct {
1095 const char *name;
1096 IV iv;
1097 } *civ, const_iv[] = {
1098# define const_niv(name, value) { # name, (IV) value },
1099# define const_iv(name) { # name, (IV) name },
1100# define const_eio(name) { # name, (IV) EIO_ ## name },
1101
1102 /* you have to re-run ./gendef0 after adding/removing any constants here */
1103 /* the first block can be undef if missing */
1104 const_iv (ENOSYS)
1105 const_iv (EXDEV)
1106 const_iv (EBADR)
1107
1108 /* for lseek */
1109 const_iv (SEEK_DATA)
1110 const_iv (SEEK_HOLE)
1111
1112 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1113 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1114 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1115 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1116 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1117 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1118
1119 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1120 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1121 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1122 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1123 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1124
1125 /* the second block will be 0 when missing */
1126 const_iv (O_ACCMODE)
1127
1128 const_iv (O_RDONLY)
1129 const_iv (O_WRONLY)
1130 const_iv (O_RDWR)
1131 const_iv (O_CREAT)
1132 const_iv (O_TRUNC)
1133 const_iv (O_EXCL)
1134 const_iv (O_APPEND)
1135
1136 const_iv (O_ASYNC)
1137 const_iv (O_DIRECT)
1138 const_iv (O_NOATIME)
1139
1140 const_iv (O_CLOEXEC)
1141 const_iv (O_NOCTTY)
1142 const_iv (O_NOFOLLOW)
1143 const_iv (O_NONBLOCK)
1144 const_iv (O_EXEC)
1145 const_iv (O_SEARCH)
1146 const_iv (O_DIRECTORY)
1147 const_iv (O_DSYNC)
1148 const_iv (O_RSYNC)
1149 const_iv (O_SYNC)
1150 const_iv (O_PATH)
1151 const_iv (O_TMPFILE)
1152 const_iv (O_TTY_INIT)
1153
1154 const_iv (S_IFIFO)
1155 const_iv (S_IFCHR)
1156 const_iv (S_IFBLK)
1157 const_iv (S_IFLNK)
1158 const_iv (S_IFREG)
1159 const_iv (S_IFDIR)
1160 const_iv (S_IFWHT)
1161 const_iv (S_IFSOCK)
1162 const_iv (S_IFMT)
1163
1164 const_iv (ST_RDONLY)
1165 const_iv (ST_NOSUID)
1166 const_iv (ST_NODEV)
1167 const_iv (ST_NOEXEC)
1168 const_iv (ST_SYNCHRONOUS)
1169 const_iv (ST_MANDLOCK)
1170 const_iv (ST_WRITE)
1171 const_iv (ST_APPEND)
1172 const_iv (ST_IMMUTABLE)
1173 const_iv (ST_NOATIME)
1174 const_iv (ST_NODIRATIME)
1175 const_iv (ST_RELATIME)
1176
1177 const_iv (PROT_NONE)
1178 const_iv (PROT_EXEC)
1179 const_iv (PROT_READ)
1180 const_iv (PROT_WRITE)
1181
1182 const_iv (MAP_PRIVATE)
1183 const_iv (MAP_SHARED)
1184 const_iv (MAP_FIXED)
1185 const_iv (MAP_ANONYMOUS)
1186
1187 /* linuxish */
1188 const_iv (MAP_LOCKED)
1189 const_iv (MAP_NORESERVE)
1190 const_iv (MAP_POPULATE)
1191 const_iv (MAP_NONBLOCK)
1192 const_iv (MAP_GROWSDOWN)
1193 const_iv (MAP_32BIT)
1194 const_iv (MAP_HUGETLB)
1195 const_iv (MAP_STACK)
1196
1197 const_iv (MREMAP_MAYMOVE)
1198 const_iv (MREMAP_FIXED)
1199
1200 const_iv (F_DUPFD_CLOEXEC)
1201
1202 const_iv (MSG_CMSG_CLOEXEC)
1203 const_iv (SOCK_CLOEXEC)
1204
1205 const_iv (F_OFD_GETLK)
1206 const_iv (F_OFD_SETLK)
1207 const_iv (F_OFD_GETLKW)
1208
1209 const_iv (FIFREEZE)
1210 const_iv (FITHAW)
1211 const_iv (FITRIM)
1212 const_iv (FICLONE)
1213 const_iv (FICLONERANGE)
1214 const_iv (FIDEDUPERANGE)
1215
1216 const_iv (FS_IOC_GETFLAGS)
1217 const_iv (FS_IOC_SETFLAGS)
1218 const_iv (FS_IOC_GETVERSION)
1219 const_iv (FS_IOC_SETVERSION)
1220 const_iv (FS_IOC_FIEMAP)
1221 const_iv (FS_IOC_FSGETXATTR)
1222 const_iv (FS_IOC_FSSETXATTR)
1223 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1224 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1225 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1226
1227 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1228
1229 const_iv (FS_SECRM_FL)
1230 const_iv (FS_UNRM_FL)
1231 const_iv (FS_COMPR_FL)
1232 const_iv (FS_SYNC_FL)
1233 const_iv (FS_IMMUTABLE_FL)
1234 const_iv (FS_APPEND_FL)
1235 const_iv (FS_NODUMP_FL)
1236 const_iv (FS_NOATIME_FL)
1237 const_iv (FS_DIRTY_FL)
1238 const_iv (FS_COMPRBLK_FL)
1239 const_iv (FS_NOCOMP_FL)
1240 const_iv (FS_ENCRYPT_FL)
1241 const_iv (FS_BTREE_FL)
1242 const_iv (FS_INDEX_FL)
1243 const_iv (FS_JOURNAL_DATA_FL)
1244 const_iv (FS_NOTAIL_FL)
1245 const_iv (FS_DIRSYNC_FL)
1246 const_iv (FS_TOPDIR_FL)
1247 const_iv (FS_FL_USER_MODIFIABLE)
1248
1249 const_iv (FS_XFLAG_REALTIME)
1250 const_iv (FS_XFLAG_PREALLOC)
1251 const_iv (FS_XFLAG_IMMUTABLE)
1252 const_iv (FS_XFLAG_APPEND)
1253 const_iv (FS_XFLAG_SYNC)
1254 const_iv (FS_XFLAG_NOATIME)
1255 const_iv (FS_XFLAG_NODUMP)
1256 const_iv (FS_XFLAG_RTINHERIT)
1257 const_iv (FS_XFLAG_PROJINHERIT)
1258 const_iv (FS_XFLAG_NOSYMLINKS)
1259 const_iv (FS_XFLAG_EXTSIZE)
1260 const_iv (FS_XFLAG_EXTSZINHERIT)
1261 const_iv (FS_XFLAG_NODEFRAG)
1262 const_iv (FS_XFLAG_FILESTREAM)
1263 const_iv (FS_XFLAG_DAX)
1264 const_iv (FS_XFLAG_HASATTR)
1265
1266 const_iv (FIEMAP_FLAG_SYNC)
1267 const_iv (FIEMAP_FLAG_XATTR)
1268 const_iv (FIEMAP_FLAGS_COMPAT)
1269 const_iv (FIEMAP_EXTENT_LAST)
1270 const_iv (FIEMAP_EXTENT_UNKNOWN)
1271 const_iv (FIEMAP_EXTENT_DELALLOC)
1272 const_iv (FIEMAP_EXTENT_ENCODED)
1273 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1274 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1275 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1276 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1277 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1278 const_iv (FIEMAP_EXTENT_MERGED)
1279 const_iv (FIEMAP_EXTENT_SHARED)
1280
1281 const_iv (SPLICE_F_MOVE)
1282 const_iv (SPLICE_F_NONBLOCK)
1283 const_iv (SPLICE_F_MORE)
1284 const_iv (SPLICE_F_GIFT)
1285
1286 const_iv (EFD_CLOEXEC)
1287 const_iv (EFD_NONBLOCK)
1288 const_iv (EFD_SEMAPHORE)
1289
1290 const_iv (CLOCK_REALTIME)
1291 const_iv (CLOCK_MONOTONIC)
1292 const_iv (CLOCK_BOOTTIME)
1293 const_iv (CLOCK_REALTIME_ALARM)
1294 const_iv (CLOCK_BOOTTIME_ALARM)
1295
1296 const_iv (TFD_NONBLOCK)
1297 const_iv (TFD_CLOEXEC)
1298
1299 const_iv (TFD_TIMER_ABSTIME)
1300 const_iv (TFD_TIMER_CANCEL_ON_SET)
1301
1302 const_iv (STATX_TYPE)
1303 const_iv (STATX_MODE)
1304 const_iv (STATX_NLINK)
1305 const_iv (STATX_UID)
1306 const_iv (STATX_GID)
1307 const_iv (STATX_ATIME)
1308 const_iv (STATX_MTIME)
1309 const_iv (STATX_CTIME)
1310 const_iv (STATX_INO)
1311 const_iv (STATX_SIZE)
1312 const_iv (STATX_BLOCKS)
1313 const_iv (STATX_BASIC_STATS)
1314 const_iv (STATX_ALL)
1315 const_iv (STATX_BTIME)
1316 const_iv (STATX_ATTR_COMPRESSED)
1317 const_iv (STATX_ATTR_IMMUTABLE)
1318 const_iv (STATX_ATTR_APPEND)
1319 const_iv (STATX_ATTR_NODUMP)
1320 const_iv (STATX_ATTR_ENCRYPTED)
1321 const_iv (STATX_ATTR_AUTOMOUNT)
1322
1323 /* these are libeio constants, and are independent of gendef0 */
1324 const_eio (SEEK_SET)
1325 const_eio (SEEK_CUR)
1326 const_eio (SEEK_END)
1327
1328 const_eio (MCL_FUTURE)
1329 const_eio (MCL_CURRENT)
1330 const_eio (MCL_ONFAULT)
1331
1332 const_eio (MS_ASYNC)
1333 const_eio (MS_INVALIDATE)
1334 const_eio (MS_SYNC)
1335
1336 const_eio (MT_MODIFY)
1337
1338 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1339 const_eio (SYNC_FILE_RANGE_WRITE)
1340 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1341
1342 const_eio (FALLOC_FL_KEEP_SIZE)
1343 const_eio (FALLOC_FL_PUNCH_HOLE)
1344 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1345 const_eio (FALLOC_FL_ZERO_RANGE)
1346 const_eio (FALLOC_FL_INSERT_RANGE)
1347 const_eio (FALLOC_FL_UNSHARE_RANGE)
1348
1349 const_eio (RENAME_NOREPLACE)
1350 const_eio (RENAME_EXCHANGE)
1351 const_eio (RENAME_WHITEOUT)
1352
1353 const_eio (READDIR_DENTS)
1354 const_eio (READDIR_DIRS_FIRST)
1355 const_eio (READDIR_STAT_ORDER)
1356 const_eio (READDIR_FOUND_UNKNOWN)
1357
1358 const_eio (DT_UNKNOWN)
1359 const_eio (DT_FIFO)
1360 const_eio (DT_CHR)
1361 const_eio (DT_DIR)
1362 const_eio (DT_BLK)
1363 const_eio (DT_REG)
1364 const_eio (DT_LNK)
1365 const_eio (DT_SOCK)
1366 const_eio (DT_WHT)
1367 };
1368
828 HV *stash = gv_stashpv ("IO::AIO", 1); 1369 aio_stash = gv_stashpv ("IO::AIO" , 1);
829 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1370 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
830 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1371 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
831 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1372 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
832 1373
833 create_pipe (); 1374 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
834 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1375 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
835}
836 1376
1377 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1378
1379 /* allocate dummy pipe fd for aio_close */
1380 {
1381 int pipefd [2];
1382
1383 if (
1384#ifdef _WIN32
1385 _pipe (pipefd, 1, _O_BINARY) < 0
1386#else
1387 pipe (pipefd) < 0
1388 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1389#endif
1390 || close (pipefd [1]) < 0
1391 )
1392 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1393
1394 close_fd = pipefd [0];
1395 }
1396
1397 reinit ();
1398}
1399
837void 1400void
838min_parallel (nthreads) 1401reinit ()
839 int nthreads 1402 PROTOTYPE:
1403
1404void
1405max_poll_reqs (unsigned int nreqs)
840 PROTOTYPE: $ 1406 PROTOTYPE: $
1407 CODE:
1408 eio_set_max_poll_reqs (nreqs);
841 1409
842void 1410void
843max_parallel (nthreads) 1411max_poll_time (double nseconds)
844 int nthreads
845 PROTOTYPE: $ 1412 PROTOTYPE: $
846
847int
848max_outstanding (nreqs)
849 int nreqs
850 PROTOTYPE: $
851 CODE: 1413 CODE:
852 RETVAL = max_outstanding; 1414 eio_set_max_poll_time (nseconds);
1415
1416void
1417min_parallel (unsigned int nthreads)
1418 PROTOTYPE: $
1419 CODE:
1420 eio_set_min_parallel (nthreads);
1421
1422void
1423max_parallel (unsigned int nthreads)
1424 PROTOTYPE: $
1425 CODE:
1426 eio_set_max_parallel (nthreads);
1427
1428void
1429max_idle (unsigned int nthreads)
1430 PROTOTYPE: $
1431 CODE:
1432 eio_set_max_idle (nthreads);
1433
1434void
1435idle_timeout (unsigned int seconds)
1436 PROTOTYPE: $
1437 CODE:
1438 eio_set_idle_timeout (seconds);
1439
1440void
1441max_outstanding (unsigned int maxreqs)
1442 PROTOTYPE: $
1443 CODE:
853 max_outstanding = nreqs; 1444 max_outstanding = maxreqs;
854 1445
855void 1446void
856aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1447aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
857 SV * pathname
858 int flags
859 int mode
860 SV * callback
861 PROTOTYPE: $$$;$
862 PPCODE: 1448 PPCODE:
863{ 1449{
864 dREQ; 1450 dREQ;
865 1451
866 req->type = REQ_OPEN; 1452 req->type = EIO_WD_OPEN;
867 req->data = newSVsv (pathname); 1453 req_set_path1 (req, pathname);
868 req->dataptr = SvPVbyte_nolen (req->data);
869 req->fd = flags;
870 req->mode = mode;
871 1454
872 REQ_SEND; 1455 REQ_SEND;
873} 1456}
874 1457
875void 1458void
1459aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1460 PPCODE:
1461{
1462 dREQ;
1463
1464 req->type = EIO_OPEN;
1465 req_set_path1 (req, pathname);
1466 req->int1 = flags;
1467 req->int2 = mode;
1468
1469 REQ_SEND;
1470}
1471
1472void
876aio_close (fh,callback=&PL_sv_undef) 1473aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
877 SV * fh
878 SV * callback
879 PROTOTYPE: $;$
880 ALIAS: 1474 ALIAS:
881 aio_close = REQ_CLOSE
882 aio_fsync = REQ_FSYNC 1475 aio_fsync = EIO_FSYNC
883 aio_fdatasync = REQ_FDATASYNC 1476 aio_fdatasync = EIO_FDATASYNC
1477 aio_syncfs = EIO_SYNCFS
884 PPCODE: 1478 PPCODE:
885{ 1479{
1480 int fd = s_fileno_croak (fh, 0);
886 dREQ; 1481 dREQ;
887 1482
888 req->type = ix; 1483 req->type = ix;
889 req->fh = newSVsv (fh); 1484 req->sv1 = newSVsv (fh);
890 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1485 req->int1 = fd;
891 1486
892 REQ_SEND (req); 1487 REQ_SEND;
893} 1488}
894 1489
895void 1490void
1491aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1492 PPCODE:
1493{
1494 int fd = s_fileno_croak (fh, 0);
1495 dREQ;
1496
1497 req->type = EIO_SYNC_FILE_RANGE;
1498 req->sv1 = newSVsv (fh);
1499 req->int1 = fd;
1500 req->offs = offset;
1501 req->size = nbytes;
1502 req->int2 = flags;
1503
1504 REQ_SEND;
1505}
1506
1507void
1508aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1509 PPCODE:
1510{
1511 int fd = s_fileno_croak (fh, 0);
1512 dREQ;
1513
1514 req->type = EIO_FALLOCATE;
1515 req->sv1 = newSVsv (fh);
1516 req->int1 = fd;
1517 req->int2 = mode;
1518 req->offs = offset;
1519 req->size = len;
1520
1521 REQ_SEND;
1522}
1523
1524void
1525aio_close (SV *fh, SV *callback = &PL_sv_undef)
1526 PPCODE:
1527{
1528 int fd = s_fileno_croak (fh, 0);
1529 dREQ;
1530#if 0
1531 /* partially duplicate logic in s_fileno */
1532 SvGETMAGIC (fh);
1533
1534 if (SvROK (fh))
1535 {
1536 fh = SvRV (fh);
1537 SvGETMAGIC (fh);
1538 }
1539
1540 if (SvTYPE (fh) == SVt_PVGV)
1541 {
1542 /* perl filehandle */
1543 PerlIOUnix_refcnt_inc (fd);
1544 do_close ((GV *)fh, 1);
1545
1546 req->type = EIO_CLOSE;
1547 req->int1 = fd;
1548 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1549 }
1550 else
1551#endif
1552 {
1553 /* fd number */
1554 req->type = EIO_DUP2;
1555 req->int1 = close_fd;
1556 req->sv2 = newSVsv (fh);
1557 req->int2 = fd;
1558 }
1559
1560 REQ_SEND;
1561}
1562
1563void
1564aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1565 PPCODE:
1566{
1567 int fd = s_fileno_croak (fh, 0);
1568 dREQ;
1569
1570 req->type = EIO_SEEK;
1571 req->sv1 = newSVsv (fh);
1572 req->int1 = fd;
1573 req->offs = SvVAL64 (offset);
1574 req->int2 = whence;
1575
1576 REQ_SEND;
1577}
1578
1579void
896aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1580aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
897 SV * fh
898 UV offset
899 UV length
900 SV * data
901 UV dataoffset
902 SV * callback
903 ALIAS: 1581 ALIAS:
904 aio_read = REQ_READ 1582 aio_read = EIO_READ
905 aio_write = REQ_WRITE 1583 aio_write = EIO_WRITE
906 PROTOTYPE: $$$$$;$
907 PPCODE: 1584 PPCODE:
908{ 1585{
909 aio_req req;
910 STRLEN svlen; 1586 STRLEN svlen;
1587 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
911 char *svptr = SvPVbyte (data, svlen); 1588 char *svptr = SvPVbyte (data, svlen);
912 1589 UV len = SvUV (length);
913 SvUPGRADE (data, SVt_PV);
914 SvPOK_on (data);
915 1590
916 if (dataoffset < 0) 1591 if (dataoffset < 0)
917 dataoffset += svlen; 1592 dataoffset += svlen;
918 1593
919 if (dataoffset < 0 || dataoffset > svlen) 1594 if (dataoffset < 0 || dataoffset > svlen)
920 croak ("data offset outside of string"); 1595 croak ("dataoffset outside of data scalar");
921 1596
922 if (ix == REQ_WRITE) 1597 if (ix == EIO_WRITE)
923 { 1598 {
924 /* write: check length and adjust. */ 1599 /* write: check length and adjust. */
925 if (length < 0 || length + dataoffset > svlen) 1600 if (!SvOK (length) || len + dataoffset > svlen)
926 length = svlen - dataoffset; 1601 len = svlen - dataoffset;
927 } 1602 }
928 else 1603 else
929 { 1604 {
930 /* read: grow scalar as necessary */ 1605 /* read: check type and grow scalar as necessary */
1606 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
931 svptr = SvGROW (data, length + dataoffset); 1607 svptr = sv_grow (data, len + dataoffset + 1);
1608 else if (SvCUR (data) < len + dataoffset)
1609 croak ("length + dataoffset outside of scalar, and cannot grow");
932 } 1610 }
933
934 if (length < 0)
935 croak ("length must not be negative");
936 1611
937 { 1612 {
938 dREQ; 1613 dREQ;
939 1614
940 req->type = ix; 1615 req->type = ix;
941 req->fh = newSVsv (fh); 1616 req->sv1 = newSVsv (fh);
942 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1617 req->int1 = fd;
943 : IoOFP (sv_2io (fh))); 1618 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
944 req->offset = offset; 1619 req->size = len;
945 req->length = length;
946 req->data = SvREFCNT_inc (data); 1620 req->sv2 = SvREFCNT_inc (data);
947 req->dataptr = (char *)svptr + dataoffset; 1621 req->ptr2 = (char *)svptr + dataoffset;
1622 req->stroffset = dataoffset;
948 1623
949 if (!SvREADONLY (data)) 1624 if (!SvREADONLY (data))
950 { 1625 {
951 SvREADONLY_on (data); 1626 SvREADONLY_on (data);
952 req->data2ptr = (void *)data; 1627 req->flags |= FLAG_SV2_RO_OFF;
953 } 1628 }
954 1629
955 REQ_SEND; 1630 REQ_SEND;
956 } 1631 }
957} 1632}
958 1633
959void 1634void
960aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1635aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
961 SV * out_fh 1636 ALIAS:
962 SV * in_fh 1637 aio_ioctl = EIO_IOCTL
963 UV in_offset 1638 aio_fcntl = EIO_FCNTL
964 UV length
965 SV * callback
966 PROTOTYPE: $$$$;$
967 PPCODE: 1639 PPCODE:
968{ 1640{
969 dREQ; 1641 int fd = s_fileno_croak (fh, 0);
1642 char *svptr;
970 1643
971 req->type = REQ_SENDFILE; 1644 if (SvPOK (arg) || !SvNIOK (arg))
972 req->fh = newSVsv (out_fh);
973 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
974 req->fh2 = newSVsv (in_fh);
975 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
976 req->offset = in_offset;
977 req->length = length;
978
979 REQ_SEND;
980}
981
982void
983aio_readahead (fh,offset,length,callback=&PL_sv_undef)
984 SV * fh
985 UV offset
986 IV length
987 SV * callback
988 PROTOTYPE: $$$;$
989 PPCODE:
990{
991 dREQ;
992
993 req->type = REQ_READAHEAD;
994 req->fh = newSVsv (fh);
995 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
996 req->offset = offset;
997 req->length = length;
998
999 REQ_SEND;
1000}
1001
1002void
1003aio_stat (fh_or_path,callback=&PL_sv_undef)
1004 SV * fh_or_path
1005 SV * callback
1006 ALIAS:
1007 aio_stat = REQ_STAT
1008 aio_lstat = REQ_LSTAT
1009 PPCODE:
1010{
1011 dREQ;
1012
1013 New (0, req->statdata, 1, Stat_t);
1014 if (!req->statdata)
1015 { 1645 {
1016 req_free (req); 1646 STRLEN svlen;
1017 croak ("out of memory during aio_req->statdata allocation"); 1647 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1018 } 1648#ifdef IOCPARM_LEN
1649 STRLEN need = IOCPARM_LEN (request);
1650#else
1651 STRLEN need = 256;
1652#endif
1019 1653
1020 if (SvPOK (fh_or_path)) 1654 if (svlen < need)
1021 { 1655 svptr = SvGROW (arg, need);
1022 req->type = ix;
1023 req->data = newSVsv (fh_or_path);
1024 req->dataptr = SvPVbyte_nolen (req->data);
1025 } 1656 }
1026 else 1657 else
1658 svptr = (char *)SvIV (arg);
1659
1027 { 1660 {
1661 dREQ;
1662
1028 req->type = REQ_FSTAT; 1663 req->type = ix;
1029 req->fh = newSVsv (fh_or_path); 1664 req->sv1 = newSVsv (fh);
1030 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1665 req->int1 = fd;
1666 req->int2 = (long)request;
1667 req->sv2 = SvREFCNT_inc (arg);
1668 req->ptr2 = svptr;
1669
1670 REQ_SEND;
1031 } 1671 }
1672}
1673
1674void
1675aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1676 ALIAS:
1677 aio_readlink = EIO_READLINK
1678 aio_realpath = EIO_REALPATH
1679 PPCODE:
1680{
1681 dREQ;
1682
1683 req->type = ix;
1684 req_set_path1 (req, pathname);
1032 1685
1033 REQ_SEND; 1686 REQ_SEND;
1034} 1687}
1035 1688
1036void 1689void
1037aio_unlink (pathname,callback=&PL_sv_undef) 1690aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1038 SV * pathname 1691 PPCODE:
1039 SV * callback 1692{
1693 int ifd = s_fileno_croak (in_fh , 0);
1694 int ofd = s_fileno_croak (out_fh, 1);
1695 dREQ;
1696
1697 req->type = EIO_SENDFILE;
1698 req->sv1 = newSVsv (out_fh);
1699 req->int1 = ofd;
1700 req->sv2 = newSVsv (in_fh);
1701 req->int2 = ifd;
1702 req->offs = in_offset;
1703 req->size = length;
1704
1705 REQ_SEND;
1706}
1707
1708void
1709aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1710 PPCODE:
1711{
1712 int fd = s_fileno_croak (fh, 0);
1713 dREQ;
1714
1715 req->type = EIO_READAHEAD;
1716 req->sv1 = newSVsv (fh);
1717 req->int1 = fd;
1718 req->offs = offset;
1719 req->size = length;
1720
1721 REQ_SEND;
1722}
1723
1724void
1725aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1040 ALIAS: 1726 ALIAS:
1727 aio_stat = EIO_STAT
1728 aio_lstat = EIO_LSTAT
1729 aio_statvfs = EIO_STATVFS
1730 PPCODE:
1731{
1732 dREQ;
1733
1734 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1735
1736 REQ_SEND;
1737}
1738
1739void
1740st_xtime ()
1741 ALIAS:
1742 st_atime = 0x01
1743 st_mtime = 0x02
1744 st_ctime = 0x04
1745 st_btime = 0x08
1746 st_xtime = 0x0f
1747 PPCODE:
1748 EXTEND (SP, 4);
1749 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1750 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1751 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1752 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1753
1754void
1755st_xtimensec ()
1756 ALIAS:
1757 st_atimensec = 0x01
1758 st_mtimensec = 0x02
1759 st_ctimensec = 0x04
1760 st_btimensec = 0x08
1761 st_xtimensec = 0x0f
1762 st_btimesec = 0x10
1763 st_gen = 0x20
1764 PPCODE:
1765 EXTEND (SP, 4);
1766 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1767 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1768 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1769 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1770 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1771 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1772
1773UV
1774major (UV dev)
1775 ALIAS:
1776 minor = 1
1777 CODE:
1778 RETVAL = ix ? minor (dev) : major (dev);
1779 OUTPUT:
1780 RETVAL
1781
1782UV
1783makedev (UV maj, UV min)
1784 CODE:
1785 RETVAL = makedev (maj, min);
1786 OUTPUT:
1787 RETVAL
1788
1789void
1790aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1791 PPCODE:
1792{
1793 dREQ;
1794
1795 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1796 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1797 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1798
1799 REQ_SEND;
1800}
1801
1802void
1803aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1804 PPCODE:
1805{
1806 dREQ;
1807
1808 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1809 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1810
1811 REQ_SEND;
1812}
1813
1814void
1815aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1816 PPCODE:
1817{
1818 dREQ;
1819
1820 req->int2 = mode;
1821 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1822
1823 REQ_SEND;
1824}
1825
1826void
1827aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1828 PPCODE:
1829{
1830 dREQ;
1831
1832 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1833 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1834 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1835
1836 REQ_SEND;
1837}
1838
1839void
1840aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1841 PPCODE:
1842{
1843 dREQ;
1844
1845 req->type = EIO_READDIR;
1846 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1847
1848 if (flags & EIO_READDIR_DENTS)
1849 req->int1 |= EIO_READDIR_CUSTOM2;
1850
1851 req_set_path1 (req, pathname);
1852
1853 REQ_SEND;
1854}
1855
1856void
1857aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1858 PPCODE:
1859{
1860 dREQ;
1861
1862 req->type = EIO_MKDIR;
1863 req->int2 = mode;
1864 req_set_path1 (req, pathname);
1865
1866 REQ_SEND;
1867}
1868
1869void
1870aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1871 ALIAS:
1041 aio_unlink = REQ_UNLINK 1872 aio_unlink = EIO_UNLINK
1042 aio_rmdir = REQ_RMDIR 1873 aio_rmdir = EIO_RMDIR
1043 aio_readdir = REQ_READDIR 1874 aio_readdir = EIO_READDIR
1044 PPCODE: 1875 PPCODE:
1045{ 1876{
1046 dREQ; 1877 dREQ;
1047 1878
1048 req->type = ix; 1879 req->type = ix;
1049 req->data = newSVsv (pathname); 1880 req_set_path1 (req, pathname);
1050 req->dataptr = SvPVbyte_nolen (req->data); 1881
1051
1052 REQ_SEND; 1882 REQ_SEND;
1053} 1883}
1054 1884
1055void 1885void
1056aio_link (oldpath,newpath,callback=&PL_sv_undef) 1886aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1057 SV * oldpath
1058 SV * newpath
1059 SV * callback
1060 ALIAS: 1887 ALIAS:
1061 aio_link = REQ_LINK 1888 aio_link = EIO_LINK
1062 aio_symlink = REQ_SYMLINK 1889 aio_symlink = EIO_SYMLINK
1063 aio_rename = REQ_RENAME 1890 aio_rename = EIO_RENAME
1064 PPCODE: 1891 PPCODE:
1065{ 1892{
1893 eio_wd wd2 = 0;
1066 dREQ; 1894 dREQ;
1067 1895
1068 req->type = ix; 1896 req->type = ix;
1069 req->fh = newSVsv (oldpath); 1897 req_set_path1 (req, oldpath);
1070 req->data2ptr = SvPVbyte_nolen (req->fh); 1898 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1071 req->data = newSVsv (newpath); 1899 req->int3 = (long)wd2;
1072 req->dataptr = SvPVbyte_nolen (req->data);
1073 1900
1074 REQ_SEND; 1901 REQ_SEND;
1075} 1902}
1076 1903
1077void 1904void
1078aio_group (callback=&PL_sv_undef) 1905aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1079 SV * callback 1906 PPCODE:
1080 PROTOTYPE: ;& 1907{
1908 eio_wd wd2 = 0;
1909 dREQ;
1910
1911 req->type = EIO_RENAME;
1912 req_set_path1 (req, oldpath);
1913 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1914 req->int2 = flags;
1915 req->int3 = (long)wd2;
1916
1917 REQ_SEND;
1918}
1919
1920void
1921aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1922 PPCODE:
1923{
1924 dREQ;
1925
1926 req->type = EIO_MKNOD;
1927 req->int2 = (mode_t)mode;
1928 req->offs = dev;
1929 req_set_path1 (req, pathname);
1930
1931 REQ_SEND;
1932}
1933
1934void
1935aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1936 ALIAS:
1937 aio_mtouch = EIO_MTOUCH
1938 aio_msync = EIO_MSYNC
1081 PPCODE: 1939 PPCODE:
1082{ 1940{
1941 STRLEN svlen;
1942 char *svptr = SvPVbyte (data, svlen);
1943 UV len = SvUV (length);
1944
1945 if (flags < 0)
1946 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1947
1948 if (offset < 0)
1949 offset += svlen;
1950
1951 if (offset < 0 || offset > svlen)
1952 croak ("offset outside of scalar");
1953
1954 if (!SvOK (length) || len + offset > svlen)
1955 len = svlen - offset;
1956
1957 {
1958 dREQ;
1959
1960 req->type = ix;
1961 req->sv2 = SvREFCNT_inc (data);
1962 req->ptr2 = (char *)svptr + offset;
1963 req->size = len;
1964 req->int1 = flags;
1965
1966 REQ_SEND;
1967 }
1968}
1969
1970void
1971aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1972 PPCODE:
1973{
1974 STRLEN svlen;
1975 char *svptr = SvPVbyte (data, svlen);
1976 UV len = SvUV (length);
1977
1978 if (offset < 0)
1979 offset += svlen;
1980
1981 if (offset < 0 || offset > svlen)
1982 croak ("offset outside of scalar");
1983
1984 if (!SvOK (length) || len + offset > svlen)
1985 len = svlen - offset;
1986
1987 {
1988 dREQ;
1989
1990 req->type = EIO_MLOCK;
1991 req->sv2 = SvREFCNT_inc (data);
1992 req->ptr2 = (char *)svptr + offset;
1993 req->size = len;
1994
1995 REQ_SEND;
1996 }
1997}
1998
1999void
2000aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
2001 PPCODE:
2002{
2003 dREQ;
2004
2005 req->type = EIO_MLOCKALL;
2006 req->int1 = flags;
2007
2008 REQ_SEND;
2009}
2010
2011void
2012aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
2013 PPCODE:
2014{
2015 int fd = s_fileno_croak (fh, 0);
1083 dREQ; 2016 dREQ;
2017
2018 req->type = EIO_CUSTOM;
2019 req->sv1 = newSVsv (fh);
2020 req->int1 = fd;
2021
2022 req->feed = fiemap;
2023#if HAVE_FIEMAP
2024 /* keep our fingers crossed that the next two types are 64 bit */
2025 req->offs = start;
2026 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
2027 req->int2 = flags;
2028 req->int3 = SvOK (count) ? SvIV (count) : -1;
2029#endif
2030
2031 REQ_SEND;
2032}
2033
2034void
2035aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
2036 PPCODE:
2037{
2038 char *svptr = 0;
2039
2040 sv_clear_foreign (data);
2041
2042 if (length) /* known length, directly read into scalar */
2043 {
2044 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2045 svptr = sv_grow (data, length + 1);
2046 else if (SvCUR (data) < length)
2047 croak ("length outside of scalar, and cannot grow");
2048 else
2049 svptr = SvPVbyte_nolen (data);
2050 }
2051
2052 {
2053 dREQ;
2054
2055 req->type = EIO_SLURP;
2056 req_set_path1 (req, pathname);
2057 req->offs = offset;
2058 req->size = length;
2059 req->sv2 = SvREFCNT_inc (data);
2060 req->ptr2 = svptr;
2061
2062 if (!SvREADONLY (data))
2063 {
2064 SvREADONLY_on (data);
2065 req->flags |= FLAG_SV2_RO_OFF;
2066 }
2067
2068 REQ_SEND;
2069 }
2070}
2071
2072void
2073aio_busy (double delay, SV *callback = &PL_sv_undef)
2074 PPCODE:
2075{
2076 dREQ;
2077
2078 req->type = EIO_BUSY;
2079 req->nv1 = delay < 0. ? 0. : delay;
2080
2081 REQ_SEND;
2082}
2083
2084void
2085aio_group (SV *callback = &PL_sv_undef)
2086 PPCODE:
2087{
2088 dREQ;
2089
1084 req->type = REQ_GROUP; 2090 req->type = EIO_GROUP;
2091
2092 PUTBACK;
2093 req_submit (req);
2094 SPAGAIN;
2095
1085 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2096 XPUSHs (req_sv (req, aio_grp_stash));
1086} 2097}
2098
2099void
2100aio_nop (SV *callback = &PL_sv_undef)
2101 ALIAS:
2102 aio_nop = EIO_NOP
2103 aio_sync = EIO_SYNC
2104 PPCODE:
2105{
2106 dREQ;
2107
2108 req->type = ix;
2109
2110 REQ_SEND;
2111}
2112
2113int
2114aioreq_pri (int pri = NO_INIT)
2115 CODE:
2116 RETVAL = next_pri;
2117 if (items > 0)
2118 {
2119 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2120 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2121 next_pri = pri;
2122 }
2123 OUTPUT:
2124 RETVAL
2125
2126void
2127aioreq_nice (int nice = 0)
2128 CODE:
2129 nice = next_pri - nice;
2130 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2131 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2132 next_pri = nice;
1087 2133
1088void 2134void
1089flush () 2135flush ()
1090 PROTOTYPE:
1091 CODE: 2136 CODE:
1092 while (nreqs) 2137 while (eio_nreqs ())
1093 { 2138 {
1094 poll_wait (); 2139 poll_wait ();
1095 poll_cb (); 2140 poll_cb ();
1096 } 2141 }
1097 2142
1098void 2143int
1099poll() 2144poll ()
1100 PROTOTYPE:
1101 CODE: 2145 CODE:
1102 if (nreqs)
1103 {
1104 poll_wait (); 2146 poll_wait ();
1105 poll_cb (); 2147 RETVAL = poll_cb ();
1106 }
1107
1108int
1109poll_fileno()
1110 PROTOTYPE:
1111 CODE:
1112 RETVAL = respipe [0];
1113 OUTPUT: 2148 OUTPUT:
1114 RETVAL 2149 RETVAL
1115 2150
1116int 2151int
2152poll_fileno ()
2153 CODE:
2154 RETVAL = s_epipe_fd (&respipe);
2155 OUTPUT:
2156 RETVAL
2157
2158int
1117poll_cb(...) 2159poll_cb (...)
1118 PROTOTYPE: 2160 PROTOTYPE:
1119 CODE: 2161 CODE:
1120 RETVAL = poll_cb (); 2162 RETVAL = poll_cb ();
1121 OUTPUT: 2163 OUTPUT:
1122 RETVAL 2164 RETVAL
1123 2165
1124void 2166void
1125poll_wait() 2167poll_wait ()
2168 CODE:
2169 poll_wait ();
2170
2171int
2172nreqs ()
2173 CODE:
2174 RETVAL = eio_nreqs ();
2175 OUTPUT:
2176 RETVAL
2177
2178int
2179nready ()
2180 CODE:
2181 RETVAL = eio_nready ();
2182 OUTPUT:
2183 RETVAL
2184
2185int
2186npending ()
2187 CODE:
2188 RETVAL = eio_npending ();
2189 OUTPUT:
2190 RETVAL
2191
2192int
2193nthreads ()
2194 CODE:
2195 RETVAL = eio_nthreads ();
2196 OUTPUT:
2197 RETVAL
2198
2199int
2200fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2201 CODE:
2202 RETVAL = posix_fadvise (fh, offset, length, advice);
2203 OUTPUT:
2204 RETVAL
2205
2206IV
2207sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2208 CODE:
2209 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2210 OUTPUT:
2211 RETVAL
2212
2213void
2214mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2215 PPCODE:
2216 sv_clear_foreign (scalar);
2217{
2218 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2219 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2220 if (addr == (void *)-1)
2221 XSRETURN_NO;
2222
2223 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2224
2225 if (!(prot & PROT_WRITE))
2226 SvREADONLY_on (scalar);
2227
2228 XSRETURN_YES;
2229}
2230
2231void
2232munmap (SV *scalar)
2233 CODE:
2234 sv_clear_foreign (scalar);
2235
2236SV *
2237mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2238 CODE:
2239{
2240 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2241 void *new;
2242
2243 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2244 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2245
2246 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2247
2248 RETVAL = &PL_sv_no;
2249
2250 if (new != (void *)-1)
2251 {
2252 RETVAL = new == (void *)mg->mg_ptr
2253 ? newSVpvn ("0 but true", 10)
2254 : &PL_sv_yes;
2255
2256 mg->mg_ptr = (char *)new;
2257 mg->mg_obj = (SV *)new_length;
2258
2259 SvPVX (scalar) = mg->mg_ptr;
2260 SvCUR_set (scalar, new_length);
2261 }
2262}
2263 OUTPUT:
2264 RETVAL
2265
2266int
2267madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2268 ALIAS:
2269 mprotect = 1
2270 CODE:
2271{
2272 STRLEN svlen;
2273 void *addr = SvPVbyte (scalar, svlen);
2274 STRLEN len = SvUV (length);
2275
2276 if (offset < 0)
2277 offset += svlen;
2278
2279 if (offset < 0 || offset > svlen)
2280 croak ("offset outside of scalar");
2281
2282 if (!SvOK (length) || len + offset > svlen)
2283 len = svlen - offset;
2284
2285 addr = (void *)(((intptr_t)addr) + offset);
2286 eio_page_align (&addr, &len);
2287
2288 switch (ix)
2289 {
2290 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2291 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2292 }
2293}
2294 OUTPUT:
2295 RETVAL
2296
2297int
2298munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2299 CODE:
2300{
2301 STRLEN svlen;
2302 void *addr = SvPVbyte (scalar, svlen);
2303 size_t len = SvUV (length);
2304
2305 if (offset < 0)
2306 offset += svlen;
2307
2308 if (offset < 0 || offset > svlen)
2309 croak ("offset outside of scalar");
2310
2311 if (!SvOK (length) || len + offset > svlen)
2312 len = svlen - offset;
2313
2314 addr = (void *)(((intptr_t)addr) + offset);
2315 eio_page_align (&addr, &len);
2316#if _POSIX_MEMLOCK_RANGE
2317 RETVAL = munlock (addr, len);
2318#else
2319 RETVAL = EIO_ENOSYS ();
2320#endif
2321}
2322 OUTPUT:
2323 RETVAL
2324
2325int
2326mlockall (int flags)
2327 PROTOTYPE: $;
2328 CODE:
2329 RETVAL = eio_mlockall_sync (flags);
2330 OUTPUT:
2331 RETVAL
2332
2333int
2334munlockall ()
2335 CODE:
2336#if _POSIX_MEMLOCK
2337 munlockall ();
2338#else
2339 RETVAL = EIO_ENOSYS ();
2340#endif
2341 OUTPUT:
2342 RETVAL
2343
2344int
2345statx (SV8 *pathname, int flags, UV mask)
2346 CODE:
2347{
2348 /* undocumented, and might go away, and anyway, should use eio_statx */
2349 SV *wdsv = 0;
2350 SV *pathsv = 0;
2351 eio_wd wd = EIO_CWD;
2352 void *ptr;
2353 int res;
2354
2355 req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
2356 RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
2357
2358 SvREFCNT_dec (pathsv);
2359 SvREFCNT_dec (wdsv);
2360}
2361 OUTPUT:
2362 RETVAL
2363
2364U32
2365stx_mode ()
1126 PROTOTYPE: 2366 PROTOTYPE:
1127 CODE: 2367 CODE:
1128 if (nreqs) 2368#if HAVE_STATX
1129 poll_wait (); 2369 RETVAL = stx.stx_mode;
2370#else
2371 XSRETURN_UNDEF;
2372#endif
2373 OUTPUT:
2374 RETVAL
2375
2376#define STATX_OFFSET_mask statx_offsetof (stx_mask)
2377#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
2378#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
2379#define STATX_OFFSET_uid statx_offsetof (stx_uid)
2380#define STATX_OFFSET_gid statx_offsetof (stx_gid)
2381#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
2382#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
2383#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
2384#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
2385#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
2386#define STATX_OFFSET_ino statx_offsetof (stx_ino)
2387#define STATX_OFFSET_size statx_offsetof (stx_size)
2388#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
2389#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
2390#define STATX_OFFSET_atime statx_offsetof (stx_atime)
2391#define STATX_OFFSET_btime statx_offsetof (stx_btime)
2392#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
2393#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
2394
2395U32
2396stx_mask ()
2397 PROTOTYPE:
2398 ALIAS:
2399 stx_mask = STATX_OFFSET_mask
2400 stx_blksize = STATX_OFFSET_blksize
2401 stx_nlink = STATX_OFFSET_nlink
2402 stx_uid = STATX_OFFSET_uid
2403 stx_gid = STATX_OFFSET_gid
2404 stx_rdev_major = STATX_OFFSET_rdev_major
2405 stx_rdev_minor = STATX_OFFSET_rdev_minor
2406 stx_dev_major = STATX_OFFSET_dev_major
2407 stx_dev_minor = STATX_OFFSET_dev_minor
2408 CODE:
2409#if HAVE_STATX
2410 RETVAL = *(__u32 *)((char *)&stx + ix);
2411#else
2412 XSRETURN_UNDEF;
2413#endif
2414 OUTPUT:
2415 RETVAL
2416
2417VAL64
2418stx_attributes ()
2419 PROTOTYPE:
2420 ALIAS:
2421 stx_attributes = STATX_OFFSET_attributes
2422 stx_ino = STATX_OFFSET_ino
2423 stx_size = STATX_OFFSET_size
2424 stx_blocks = STATX_OFFSET_blocks
2425 stx_attributes_mask = STATX_OFFSET_attributes_mask
2426 CODE:
2427#if HAVE_STATX
2428 RETVAL = *(__u64 *)((char *)&stx + ix);
2429#else
2430 XSRETURN_UNDEF;
2431#endif
2432 OUTPUT:
2433 RETVAL
2434
2435NV
2436stx_atime ()
2437 PROTOTYPE:
2438 ALIAS:
2439 stx_atime = STATX_OFFSET_atime
2440 stx_btime = STATX_OFFSET_btime
2441 stx_ctime = STATX_OFFSET_ctime
2442 stx_mtime = STATX_OFFSET_mtime
2443 CODE:
2444#if HAVE_STATX
2445 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2446 RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
2447#else
2448 XSRETURN_UNDEF;
2449#endif
2450 OUTPUT:
2451 RETVAL
2452
2453VAL64
2454stx_atimesec ()
2455 PROTOTYPE:
2456 ALIAS:
2457 stx_atimesec = STATX_OFFSET_atime
2458 stx_btimesec = STATX_OFFSET_btime
2459 stx_ctimesec = STATX_OFFSET_ctime
2460 stx_mtimesec = STATX_OFFSET_mtime
2461 CODE:
2462#if HAVE_STATX
2463 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2464 RETVAL = ts->tv_sec;
2465#else
2466 XSRETURN_UNDEF;
2467#endif
2468 OUTPUT:
2469 RETVAL
2470
2471U32
2472stx_atimensec ()
2473 PROTOTYPE:
2474 ALIAS:
2475 stx_atimensec = STATX_OFFSET_atime
2476 stx_btimensec = STATX_OFFSET_btime
2477 stx_ctimensec = STATX_OFFSET_ctime
2478 stx_mtimensec = STATX_OFFSET_mtime
2479 CODE:
2480#if HAVE_STATX
2481 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2482 RETVAL = ts->tv_nsec;
2483#else
2484 RETVAL = 0;
2485#endif
2486 OUTPUT:
2487 RETVAL
1130 2488
1131int 2489int
1132nreqs() 2490splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2491 CODE:
2492{
2493#if HAVE_LINUX_SPLICE
2494 loff_t off_in_, off_out_;
2495 RETVAL = splice (
2496 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2497 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2498 length, flags
2499 );
2500#else
2501 RETVAL = EIO_ENOSYS ();
2502#endif
2503}
2504 OUTPUT:
2505 RETVAL
2506
2507int
2508tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2509 CODE:
2510#if HAVE_LINUX_SPLICE
2511 RETVAL = tee (rfh, wfh, length, flags);
2512#else
2513 RETVAL = EIO_ENOSYS ();
2514#endif
2515 OUTPUT:
2516 RETVAL
2517
2518int
2519pipesize (aio_rfd rfh, int new_size = -1)
2520 PROTOTYPE: $;$
2521 CODE:
2522#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2523 if (new_size >= 0)
2524 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2525 else
2526 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2527#else
2528 errno = ENOSYS;
2529 RETVAL = -1;
2530#endif
2531 OUTPUT:
2532 RETVAL
2533
2534void
2535pipe2 (int flags = 0)
1133 PROTOTYPE: 2536 PROTOTYPE: ;$
2537 PPCODE:
2538{
2539 int fd[2];
2540 int res;
2541
2542 if (flags)
2543#if HAVE_PIPE2
2544 res = pipe2 (fd, flags);
2545#else
2546 res = (errno = ENOSYS, -1);
2547#endif
2548 else
2549 res = pipe (fd);
2550
2551 if (!res)
2552 {
2553 EXTEND (SP, 2);
2554 PUSHs (newmortalFH (fd[0], O_RDONLY));
2555 PUSHs (newmortalFH (fd[1], O_WRONLY));
2556 }
2557}
2558
2559void
2560eventfd (unsigned int initval = 0, int flags = 0)
2561 PPCODE:
2562{
2563 int fd;
2564#if HAVE_EVENTFD
2565 fd = eventfd (initval, flags);
2566#else
2567 fd = (errno = ENOSYS, -1);
2568#endif
2569
2570 XPUSHs (newmortalFH (fd, O_RDWR));
2571}
2572
2573void
2574timerfd_create (int clockid, int flags = 0)
2575 PPCODE:
2576{
2577 int fd;
2578#if HAVE_TIMERFD
2579 fd = timerfd_create (clockid, flags);
2580#else
2581 fd = (errno = ENOSYS, -1);
2582#endif
2583
2584 XPUSHs (newmortalFH (fd, O_RDWR));
2585}
2586
2587void
2588timerfd_settime (SV *fh, int flags, NV interval, NV value)
2589 PPCODE:
2590{
2591 int fd = s_fileno_croak (fh, 0);
2592#if HAVE_TIMERFD
2593 int res;
2594 struct itimerspec its, ots;
2595
2596 ts_set (&its.it_interval, interval);
2597 ts_set (&its.it_value , value);
2598 res = timerfd_settime (fd, flags, &its, &ots);
2599
2600 if (!res)
2601 {
2602 EXTEND (SP, 2);
2603 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2604 PUSHs (newSVnv (ts_get (&ots.it_value)));
2605 }
2606#else
2607 errno = ENOSYS;
2608#endif
2609}
2610
2611void
2612timerfd_gettime (SV *fh)
2613 PPCODE:
2614{
2615 int fd = s_fileno_croak (fh, 0);
2616#if HAVE_TIMERFD
2617 int res;
2618 struct itimerspec ots;
2619 res = timerfd_gettime (fd, &ots);
2620
2621 if (!res)
2622 {
2623 EXTEND (SP, 2);
2624 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2625 PUSHs (newSVnv (ts_get (&ots.it_value)));
2626 }
2627#else
2628 errno = ENOSYS;
2629#endif
2630}
2631
2632UV
2633get_fdlimit ()
1134 CODE: 2634 CODE:
1135 RETVAL = nreqs; 2635#if HAVE_RLIMITS
2636 struct rlimit rl;
2637 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2638 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2639#endif
2640 XSRETURN_UNDEF;
1136 OUTPUT: 2641 OUTPUT:
1137 RETVAL 2642 RETVAL
2643
2644void
2645min_fdlimit (UV limit = 0x7fffffffU)
2646 CODE:
2647{
2648#if HAVE_RLIMITS
2649 struct rlimit rl;
2650 rlim_t orig_rlim_max;
2651 UV bit;
2652
2653 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2654 goto fail;
2655
2656 if (rl.rlim_cur == RLIM_INFINITY)
2657 XSRETURN_YES;
2658
2659 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2660
2661 if (rl.rlim_cur < limit)
2662 {
2663 rl.rlim_cur = limit;
2664
2665 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2666 rl.rlim_max = rl.rlim_cur;
2667 }
2668
2669 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2670 XSRETURN_YES;
2671
2672 if (errno == EPERM)
2673 {
2674 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2675 /* our limit overflows a system-wide limit */
2676 /* try an adaptive algorithm, but do not lower the hardlimit */
2677 rl.rlim_max = 0;
2678 for (bit = 0x40000000U; bit; bit >>= 1)
2679 {
2680 rl.rlim_max |= bit;
2681 rl.rlim_cur = rl.rlim_max;
2682
2683 /* nevr decrease the hard limit */
2684 if (rl.rlim_max < orig_rlim_max)
2685 break;
2686
2687 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2688 rl.rlim_max &= ~bit; /* too high, remove bit again */
2689 }
2690
2691 /* now, raise the soft limit to the max permitted */
2692 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2693 {
2694 rl.rlim_cur = rl.rlim_max;
2695 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2696 errno = EPERM;
2697 }
2698 }
2699#endif
2700 fail:
2701 XSRETURN_UNDEF;
2702}
2703
2704void _on_next_submit (SV *cb)
2705 CODE:
2706 SvREFCNT_dec (on_next_submit);
2707 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2708
2709PROTOTYPES: DISABLE
2710
2711MODULE = IO::AIO PACKAGE = IO::AIO::WD
2712
2713BOOT:
2714{
2715 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2716 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2717}
2718
2719void
2720DESTROY (SV *self)
2721 CODE:
2722{
2723 aio_wd wd = SvAIO_WD (self);
2724#if HAVE_AT
2725 {
2726 SV *callback = &PL_sv_undef;
2727 dREQ; /* clobbers next_pri :/ */
2728 next_pri = req->pri; /* restore next_pri */
2729 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2730 req->type = EIO_WD_CLOSE;
2731 req->wd = wd;
2732 REQ_SEND;
2733 }
2734#else
2735 eio_wd_close_sync (wd);
2736#endif
2737}
1138 2738
1139MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2739MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1140 2740
1141void 2741void
1142cancel (aio_req_ornot req) 2742cancel (aio_req_ornot req)
1143 PROTOTYPE:
1144 CODE: 2743 CODE:
1145 req->cancelled = 1; 2744 eio_cancel (req);
1146 2745
2746void
2747cb (aio_req_ornot req, SV *callback = NO_INIT)
2748 PPCODE:
2749{
2750 if (GIMME_V != G_VOID)
2751 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2752
2753 if (items > 1)
2754 {
2755 SV *cb_cv = get_cb (callback);
2756
2757 SvREFCNT_dec (req->callback);
2758 req->callback = SvREFCNT_inc (cb_cv);
2759 }
2760}
2761
2762MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2763
2764void
2765add (aio_req grp, ...)
2766 PPCODE:
2767{
2768 int i;
2769
2770 if (grp->int1 == 2)
2771 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2772
2773 for (i = 1; i < items; ++i )
2774 {
2775 aio_req req;
2776
2777 if (GIMME_V != G_VOID)
2778 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2779
2780 req = SvAIO_REQ (ST (i));
2781
2782 if (req)
2783 eio_grp_add (grp, req);
2784 }
2785}
2786
2787void
2788cancel_subs (aio_req_ornot req)
2789 CODE:
2790 req_cancel_subs (req);
2791
2792void
2793result (aio_req grp, ...)
2794 CODE:
2795{
2796 int i;
2797 AV *av;
2798
2799 grp->errorno = errno;
2800
2801 av = newAV ();
2802 av_extend (av, items - 1);
2803
2804 for (i = 1; i < items; ++i )
2805 av_push (av, newSVsv (ST (i)));
2806
2807 SvREFCNT_dec (grp->sv1);
2808 grp->sv1 = (SV *)av;
2809}
2810
2811void
2812errno (aio_req grp, int errorno = errno)
2813 CODE:
2814 grp->errorno = errorno;
2815
2816void
2817limit (aio_req grp, int limit)
2818 CODE:
2819 eio_grp_limit (grp, limit);
2820
2821void
2822feed (aio_req grp, SV *callback = &PL_sv_undef)
2823 CODE:
2824{
2825 SvREFCNT_dec (grp->sv2);
2826 grp->sv2 = newSVsv (callback);
2827 grp->feed = aio_grp_feed;
2828
2829 if (grp->int2 <= 0)
2830 grp->int2 = 2;
2831
2832 eio_grp_limit (grp, grp->int2);
2833}
2834

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