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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.152 by root, Tue Jul 14 00:32:27 2009 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

… …
11#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h> 12#include <stdlib.h>
13#include <errno.h> 13#include <errno.h>
14#include <sys/types.h> 14#include <sys/types.h>
15#include <sys/stat.h> 15#include <sys/stat.h>
16#include <sys/statvfs.h>
16#include <limits.h> 17#include <limits.h>
17#include <fcntl.h> 18#include <fcntl.h>
18#include <sched.h> 19#include <sched.h>
20
21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
22# include <sys/mman.h>
23#endif
24
25#if !_POSIX_MAPPED_FILES
26# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
27# define munmap(addr,length) (errno = ENOSYS, -1)
28#endif
19 29
20/* perl namespace pollution */ 30/* perl namespace pollution */
21#undef VERSION 31#undef VERSION
22 32
23#ifdef _WIN32 33#ifdef _WIN32
… …
99#define expect_false(expr) expect ((expr) != 0, 0) 109#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1) 110#define expect_true(expr) expect ((expr) != 0, 1)
101 111
102/*****************************************************************************/ 112/*****************************************************************************/
103 113
104static HV *stash;
105typedef SV SV8; /* byte-sv, used for argument-checking */ 114typedef SV SV8; /* byte-sv, used for argument-checking */
106typedef int aio_rfd; /* read file desriptor */ 115typedef int aio_rfd; /* read file desriptor */
107typedef int aio_wfd; /* write file descriptor */ 116typedef int aio_wfd; /* write file descriptor */
108 117
109#define AIO_REQ_KLASS "IO::AIO::REQ" 118static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
110#define AIO_GRP_KLASS "IO::AIO::GRP"
111 119
112#define EIO_REQ_MEMBERS \ 120#define EIO_REQ_MEMBERS \
113 SV *callback; \ 121 SV *callback; \
114 SV *sv1, *sv2; \ 122 SV *sv1, *sv2; \
115 STRLEN stroffset; \ 123 STRLEN stroffset; \
… …
121 129
122#ifndef POSIX_FADV_NORMAL 130#ifndef POSIX_FADV_NORMAL
123# define POSIX_FADV_NORMAL 0 131# define POSIX_FADV_NORMAL 0
124# define NO_FADVISE 1 132# define NO_FADVISE 1
125#endif 133#endif
126
127#ifndef POSIX_FADV_SEQUENTIAL 134#ifndef POSIX_FADV_SEQUENTIAL
128# define POSIX_FADV_SEQUENTIAL 0 135# define POSIX_FADV_SEQUENTIAL 0
129#endif 136#endif
130
131#ifndef POSIX_FADV_RANDOM 137#ifndef POSIX_FADV_RANDOM
132# define POSIX_FADV_RANDOM 0 138# define POSIX_FADV_RANDOM 0
133#endif 139#endif
134
135#ifndef POSIX_FADV_NOREUSE 140#ifndef POSIX_FADV_NOREUSE
136# define POSIX_FADV_NOREUSE 0 141# define POSIX_FADV_NOREUSE 0
137#endif 142#endif
138
139#ifndef POSIX_FADV_WILLNEED 143#ifndef POSIX_FADV_WILLNEED
140# define POSIX_FADV_WILLNEED 0 144# define POSIX_FADV_WILLNEED 0
141#endif 145#endif
142
143#ifndef POSIX_FADV_DONTNEED 146#ifndef POSIX_FADV_DONTNEED
144# define POSIX_FADV_DONTNEED 0 147# define POSIX_FADV_DONTNEED 0
148#endif
149
150#ifndef ST_NODEV
151# define ST_NODEV 0
152#endif
153#ifndef ST_NOEXEC
154# define ST_NOEXEC 0
155#endif
156#ifndef ST_SYNCHRONOUS
157# define ST_SYNCHRONOUS 0
158#endif
159#ifndef ST_MANDLOCK
160# define ST_MANDLOCK 0
161#endif
162#ifndef ST_WRITE
163# define ST_WRITE 0
164#endif
165#ifndef ST_APPEND
166# define ST_APPEND 0
167#endif
168#ifndef ST_IMMUTABLE
169# define ST_IMMUTABLE 0
170#endif
171#ifndef ST_NOATIME
172# define ST_NOATIME 0
173#endif
174#ifndef ST_NODIRATIME
175# define ST_NODIRATIME 0
176#endif
177#ifndef ST_RELATIME
178# define ST_RELATIME 0
179#endif
180
181#ifndef MCL_CURRENT
182# define MCL_CURRENT 0
183#endif
184#ifndef MCL_FUTURE
185# define MCL_FUTURE 0
186#endif
187
188#ifndef MAP_ANONYMOUS
189# ifdef MAP_ANON
190# define MAP_ANONYMOUS MAP_ANON
191# else
192# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
193# endif
194#endif
195#ifndef MAP_HUGETLB
196# define MAP_HUGETLB 0
197#endif
198#ifndef MAP_LOCKED
199# define MAP_LOCKED 0
200#endif
201#ifndef MAP_NORESERVE
202# define MAP_NORESERVE 0
203#endif
204#ifndef MAP_POPULATE
205# define MAP_POPULATE 0
206#endif
207#ifndef MAP_NONBLOCK
208# define MAP_NONBLOCK 0
209#endif
210
211#ifndef PAGESIZE
212# define PAGESIZE sysconf (_SC_PAGESIZE)
145#endif 213#endif
146 214
147static int req_invoke (eio_req *req); 215static int req_invoke (eio_req *req);
148#define EIO_FINISH(req) req_invoke (req) 216#define EIO_FINISH(req) req_invoke (req)
149static void req_destroy (eio_req *grp); 217static void req_destroy (eio_req *grp);
… …
160 228
161static SV *on_next_submit; 229static SV *on_next_submit;
162static int next_pri = EIO_PRI_DEFAULT; 230static int next_pri = EIO_PRI_DEFAULT;
163static int max_outstanding; 231static int max_outstanding;
164 232
165static int respipe_osf [2], respipe [2] = { -1, -1 }; 233static s_epipe respipe;
166 234
167static void req_destroy (aio_req req); 235static void req_destroy (aio_req req);
168static void req_cancel (aio_req req); 236static void req_cancel (aio_req req);
169 237
170static void want_poll (void) 238static void want_poll (void)
171{ 239{
172 /* write a dummy byte to the pipe so fh becomes ready */ 240 /* write a dummy byte to the pipe so fh becomes ready */
173 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1); 241 s_epipe_signal (&respipe);
174} 242}
175 243
176static void done_poll (void) 244static void done_poll (void)
177{ 245{
178 /* read any signals sent by the worker threads */ 246 /* read any signals sent by the worker threads */
179 char buf [4]; 247 s_epipe_drain (&respipe);
180 while (respipe_read (respipe [0], buf, 4) == 4)
181 ;
182} 248}
183 249
184/* must be called at most once */ 250/* must be called at most once */
185static SV *req_sv (aio_req req, const char *klass) 251static SV *req_sv (aio_req req, HV *stash)
186{ 252{
187 if (!req->self) 253 if (!req->self)
188 { 254 {
189 req->self = (SV *)newHV (); 255 req->self = (SV *)newHV ();
190 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 256 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
191 } 257 }
192 258
193 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 259 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
194} 260}
195 261
196static aio_req SvAIO_REQ (SV *sv) 262static aio_req SvAIO_REQ (SV *sv)
197{ 263{
198 MAGIC *mg; 264 MAGIC *mg;
199 265
200 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 266 if (!SvROK (sv)
267 || (SvSTASH (SvRV (sv)) != aio_grp_stash
268 && SvSTASH (SvRV (sv)) != aio_req_stash
269 && !sv_derived_from (sv, "IO::AIO::REQ")))
201 croak ("object of class " AIO_REQ_KLASS " expected"); 270 croak ("object of class IO::AIO::REQ expected");
202 271
203 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 272 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
204 273
205 return mg ? (aio_req)mg->mg_ptr : 0; 274 return mg ? (aio_req)mg->mg_ptr : 0;
206} 275}
… …
212 dSP; 281 dSP;
213 282
214 ENTER; 283 ENTER;
215 SAVETMPS; 284 SAVETMPS;
216 PUSHMARK (SP); 285 PUSHMARK (SP);
217 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 286 XPUSHs (req_sv (grp, aio_grp_stash));
218 PUTBACK; 287 PUTBACK;
219 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 288 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
220 SPAGAIN; 289 SPAGAIN;
221 FREETMPS; 290 FREETMPS;
222 LEAVE; 291 LEAVE;
… …
328 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR); 397 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
329 char sym [64]; 398 char sym [64];
330 int symlen; 399 int symlen;
331 400
332 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result); 401 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
333 gv_init (gv, stash, sym, symlen, 0); 402 gv_init (gv, aio_stash, sym, symlen, 0);
334 403
335 symlen = snprintf ( 404 symlen = snprintf (
336 sym, 405 sym,
337 sizeof (sym), 406 sizeof (sym),
338 "%s&=%d", 407 "%s&=%d",
… …
344 fh = (SV *)gv; 413 fh = (SV *)gv;
345 } 414 }
346 415
347 PUSHs (fh); 416 PUSHs (fh);
348 } 417 }
418 break;
419
420 case EIO_STATVFS:
421 case EIO_FSTATVFS:
422 {
423 SV *rv = &PL_sv_undef;
424
425 if (req->result >= 0)
426 {
427 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
428 HV *hv = newHV ();
429
430 rv = sv_2mortal (newRV_noinc ((SV *)hv));
431
432 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
433 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
434 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
435 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
436 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
437 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
438 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
439 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
440 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
441 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
442 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
443 }
444
445 PUSHs (rv);
446 }
447
349 break; 448 break;
350 449
351 case EIO_GROUP: 450 case EIO_GROUP:
352 req->int1 = 2; /* mark group as finished */ 451 req->int1 = 2; /* mark group as finished */
353 452
… …
441 grp->sv2 = 0; 540 grp->sv2 = 0;
442 541
443 eio_grp_cancel (grp); 542 eio_grp_cancel (grp);
444} 543}
445 544
446#ifdef USE_SOCKETS_AS_HANDLES
447# define TO_SOCKET(x) (win32_get_osfhandle (x))
448#else
449# define TO_SOCKET(x) (x)
450#endif
451
452static void 545static void
453create_respipe (void) 546create_respipe (void)
454{ 547{
455 int old_readfd = respipe [0];
456
457 if (respipe [1] >= 0)
458 respipe_close (TO_SOCKET (respipe [1]));
459
460#ifdef _WIN32
461 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
462#else
463 if (pipe (respipe)) 548 if (s_epipe_renew (&respipe))
464#endif
465 croak ("unable to initialize result pipe"); 549 croak ("IO::AIO: unable to initialize result pipe");
466
467 if (old_readfd >= 0)
468 {
469 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
470 croak ("unable to initialize result pipe(2)");
471
472 respipe_close (respipe [0]);
473 respipe [0] = old_readfd;
474 }
475
476#ifdef _WIN32
477 int arg = 1;
478 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
479 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
480#else
481 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
482 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
483#endif
484 croak ("unable to initialize result pipe(3)");
485
486 respipe_osf [0] = TO_SOCKET (respipe [0]);
487 respipe_osf [1] = TO_SOCKET (respipe [1]);
488} 550}
489 551
490static void poll_wait (void) 552static void poll_wait (void)
491{ 553{
492 fd_set rfd;
493
494 while (eio_nreqs ()) 554 while (eio_nreqs ())
495 { 555 {
496 int size; 556 int size;
497 557
498 X_LOCK (reslock); 558 X_LOCK (reslock);
… …
502 if (size) 562 if (size)
503 return; 563 return;
504 564
505 etp_maybe_start_thread (); 565 etp_maybe_start_thread ();
506 566
507 FD_ZERO (&rfd); 567 s_epipe_wait (&respipe);
508 FD_SET (respipe [0], &rfd);
509
510 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
511 } 568 }
512} 569}
513 570
514static int poll_cb (void) 571static int poll_cb (void)
515{ 572{
… …
529 586
530static void atfork_child (void) 587static void atfork_child (void)
531{ 588{
532 create_respipe (); 589 create_respipe ();
533} 590}
591
592/*****************************************************************************/
593
594#define MMAP_MAGIC PERL_MAGIC_ext
595
596static int
597mmap_free (pTHX_ SV *sv, MAGIC *mg)
598{
599 int old_errno = errno;
600 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
601 errno = old_errno;
602
603 mg->mg_obj = 0; /* just in case */
604
605 SvREADONLY_off (sv);
606 SvCUR_set (sv, 0);
607 SvLEN_set (sv, 0);
608 SvPVX (sv) = 0;
609 SvOK_off (sv);
610
611 return 0;
612}
613
614static MGVTBL mmap_vtbl = {
615 0, 0, 0, 0, mmap_free
616};
617
618/*****************************************************************************/
534 619
535static SV * 620static SV *
536get_cb (SV *cb_sv) 621get_cb (SV *cb_sv)
537{ 622{
538 SvGETMAGIC (cb_sv); 623 SvGETMAGIC (cb_sv);
… …
558 PUTBACK; \ 643 PUTBACK; \
559 req_submit (req); \ 644 req_submit (req); \
560 SPAGAIN; \ 645 SPAGAIN; \
561 \ 646 \
562 if (GIMME_V != G_VOID) \ 647 if (GIMME_V != G_VOID) \
563 XPUSHs (req_sv (req, AIO_REQ_KLASS)); 648 XPUSHs (req_sv (req, aio_req_stash));
564 649
565MODULE = IO::AIO PACKAGE = IO::AIO 650MODULE = IO::AIO PACKAGE = IO::AIO
566 651
567PROTOTYPES: ENABLE 652PROTOTYPES: ENABLE
568 653
… …
570{ 655{
571 static const struct { 656 static const struct {
572 const char *name; 657 const char *name;
573 IV iv; 658 IV iv;
574 } *civ, const_iv[] = { 659 } *civ, const_iv[] = {
575# define const_iv(name, value) { # name, (IV) value }, 660# define const_niv(name, value) { # name, (IV) value },
661# define const_iv(name) { # name, (IV) name },
576# define const_eio(name) { # name, (IV) EIO_ ## name }, 662# define const_eio(name) { # name, (IV) EIO_ ## name },
577 const_iv (EXDEV , EXDEV) 663 const_iv (EXDEV)
578 const_iv (ENOSYS , ENOSYS) 664 const_iv (ENOSYS)
579 const_iv (O_RDONLY, O_RDONLY) 665 const_iv (O_RDONLY)
580 const_iv (O_WRONLY, O_WRONLY) 666 const_iv (O_WRONLY)
581 const_iv (O_CREAT , O_CREAT) 667 const_iv (O_CREAT)
582 const_iv (O_TRUNC , O_TRUNC) 668 const_iv (O_TRUNC)
583#ifndef _WIN32 669#ifndef _WIN32
584 const_iv (S_IFIFO , S_IFIFO) 670 const_iv (S_IFIFO)
585#endif 671#endif
586 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL) 672 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
587 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL) 673 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
588 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM) 674 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
589 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 675 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
590 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 676 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
591 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 677 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
678
679 const_iv (ST_RDONLY)
680 const_iv (ST_NOSUID)
681 const_iv (ST_NODEV)
682 const_iv (ST_NOEXEC)
683 const_iv (ST_SYNCHRONOUS)
684 const_iv (ST_MANDLOCK)
685 const_iv (ST_WRITE)
686 const_iv (ST_APPEND)
687 const_iv (ST_IMMUTABLE)
688 const_iv (ST_NOATIME)
689 const_iv (ST_NODIRATIME)
690 const_iv (ST_RELATIME)
691
692 const_iv (PROT_EXEC)
693 const_iv (PROT_NONE)
694 const_iv (PROT_READ)
695 const_iv (PROT_WRITE)
696
697 /*const_iv (MAP_FIXED)*/
698 const_iv (MAP_PRIVATE)
699 const_iv (MAP_SHARED)
700 const_iv (MAP_ANONYMOUS)
701
702 /* linuxish */
703 const_iv (MAP_HUGETLB)
704 const_iv (MAP_LOCKED)
705 const_iv (MAP_NORESERVE)
706 const_iv (MAP_POPULATE)
707 const_iv (MAP_NONBLOCK)
708
709 const_iv (MCL_FUTURE)
710 const_iv (MCL_CURRENT)
711
712 const_eio (MS_ASYNC)
713 const_eio (MS_INVALIDATE)
714 const_eio (MS_SYNC)
715
716 const_eio (MT_MODIFY)
592 717
593 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE) 718 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
594 const_eio (SYNC_FILE_RANGE_WRITE) 719 const_eio (SYNC_FILE_RANGE_WRITE)
595 const_eio (SYNC_FILE_RANGE_WAIT_AFTER) 720 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
596 721
… …
608 const_eio (DT_LNK) 733 const_eio (DT_LNK)
609 const_eio (DT_SOCK) 734 const_eio (DT_SOCK)
610 const_eio (DT_WHT) 735 const_eio (DT_WHT)
611 }; 736 };
612 737
613 stash = gv_stashpv ("IO::AIO", 1); 738 aio_stash = gv_stashpv ("IO::AIO" , 1);
739 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
740 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
614 741
615 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; ) 742 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
616 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv)); 743 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
744
745 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
617 746
618 create_respipe (); 747 create_respipe ();
619 748
620 if (eio_init (want_poll, done_poll) < 0) 749 if (eio_init (want_poll, done_poll) < 0)
621 croak ("IO::AIO: unable to initialise eio library"); 750 croak ("IO::AIO: unable to initialise eio library");
… …
848} 977}
849 978
850void 979void
851aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) 980aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
852 ALIAS: 981 ALIAS:
853 aio_stat = EIO_STAT 982 aio_stat = EIO_STAT
854 aio_lstat = EIO_LSTAT 983 aio_lstat = EIO_LSTAT
984 aio_statvfs = EIO_STATVFS
855 PPCODE: 985 PPCODE:
856{ 986{
857 dREQ; 987 dREQ;
858 988
859 req->sv1 = newSVsv (fh_or_path); 989 req->sv1 = newSVsv (fh_or_path);
… …
863 req->type = ix; 993 req->type = ix;
864 req->ptr1 = SvPVbyte_nolen (req->sv1); 994 req->ptr1 = SvPVbyte_nolen (req->sv1);
865 } 995 }
866 else 996 else
867 { 997 {
868 req->type = EIO_FSTAT; 998 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
869 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 999 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
870 } 1000 }
871 1001
872 REQ_SEND; 1002 REQ_SEND;
873} 1003}
… …
1036 1166
1037 REQ_SEND; 1167 REQ_SEND;
1038} 1168}
1039 1169
1040void 1170void
1171aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1172 ALIAS:
1173 aio_mtouch = EIO_MTOUCH
1174 aio_msync = EIO_MSYNC
1175 PROTOTYPE: $$$$;$
1176 PPCODE:
1177{
1178 STRLEN svlen;
1179 UV len = SvUV (length);
1180 char *svptr = SvPVbyte (data, svlen);
1181
1182 if (offset < 0)
1183 offset += svlen;
1184
1185 if (offset < 0 || offset > svlen)
1186 croak ("offset outside of scalar");
1187
1188 if (!SvOK (length) || len + offset > svlen)
1189 len = svlen - offset;
1190
1191 {
1192 dREQ;
1193
1194 req->type = ix;
1195 req->size = len;
1196 req->sv2 = SvREFCNT_inc (data);
1197 req->ptr2 = (char *)svptr + offset;
1198 req->int1 = flags;
1199
1200 REQ_SEND;
1201 }
1202}
1203
1204void
1041aio_busy (double delay, SV *callback=&PL_sv_undef) 1205aio_busy (double delay, SV *callback=&PL_sv_undef)
1042 PPCODE: 1206 PPCODE:
1043{ 1207{
1044 dREQ; 1208 dREQ;
1045 1209
… …
1057 dREQ; 1221 dREQ;
1058 1222
1059 req->type = EIO_GROUP; 1223 req->type = EIO_GROUP;
1060 1224
1061 req_submit (req); 1225 req_submit (req);
1062 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1226 XPUSHs (req_sv (req, aio_grp_stash));
1063} 1227}
1064 1228
1065void 1229void
1066aio_nop (SV *callback=&PL_sv_undef) 1230aio_nop (SV *callback=&PL_sv_undef)
1067 ALIAS: 1231 ALIAS:
… …
1119 1283
1120int 1284int
1121poll_fileno() 1285poll_fileno()
1122 PROTOTYPE: 1286 PROTOTYPE:
1123 CODE: 1287 CODE:
1124 RETVAL = respipe [0]; 1288 RETVAL = s_epipe_fd (&respipe);
1125 OUTPUT: 1289 OUTPUT:
1126 RETVAL 1290 RETVAL
1127 1291
1128int 1292int
1129poll_cb(...) 1293poll_cb(...)
… …
1176 PROTOTYPE: $$$$ 1340 PROTOTYPE: $$$$
1177 CODE: 1341 CODE:
1178#if _XOPEN_SOURCE >= 600 && !NO_FADVISE 1342#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1179 RETVAL = posix_fadvise (fh, offset, length, advice); 1343 RETVAL = posix_fadvise (fh, offset, length, advice);
1180#else 1344#else
1181 RETVAL = errno = ENOSYS; 1345 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1182#endif 1346#endif
1183 OUTPUT: 1347 OUTPUT:
1184 RETVAL 1348 RETVAL
1185 1349
1186ssize_t 1350ssize_t
1187sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count) 1351sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1188 PROTOTYPE: $$$$ 1352 PROTOTYPE: $$$$
1189 CODE: 1353 CODE:
1190 eio_sendfile_sync (ofh, ifh, offset, count); 1354 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1355 OUTPUT:
1356 RETVAL
1357
1358void
1359mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1360 PROTOTYPE: $$$$$;$
1361 PPCODE:
1362 sv_unmagic (scalar, MMAP_MAGIC);
1363{
1364 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1365 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1366 if (addr == (void *)-1)
1367 XSRETURN_NO;
1368
1369 /* we store the length in mg_obj, as namlen is I32 :/ */
1370 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1371 ->mg_obj = (SV *)length;
1372
1373 SvUPGRADE (scalar, SVt_PV); /* nop... */
1374 if (!(prot & PROT_WRITE))
1375 SvREADONLY_on (scalar);
1376
1377 SvPVX (scalar) = (char *)addr;
1378 SvCUR_set (scalar, length);
1379 SvLEN_set (scalar, 0);
1380 SvPOK_only (scalar);
1381
1382 XSRETURN_YES;
1383}
1384
1385void
1386munmap (SV *scalar)
1387 PROTOTYPE: $
1388 CODE:
1389 sv_unmagic (scalar, MMAP_MAGIC);
1390
1391int
1392mlockall (int flags)
1393 PROTOTYPE: $
1394 CODE:
1395#if _POSIX_MEMLOCK
1396#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1397 extern int mallopt (int, int);
1398 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1399#endif
1400 mlockall (flags);
1401#else
1402 RETVAL = -1;
1403 errno = ENOSYS;
1404#endif
1405 OUTPUT:
1406 RETVAL
1407
1408int
1409munlockall ()
1410 PROTOTYPE:
1411 CODE:
1412#if _POSIX_MEMLOCK
1413 munlockall ();
1414#else
1415 RETVAL = -1;
1416 errno = ENOSYS;
1417#endif
1418 OUTPUT:
1419 RETVAL
1191 1420
1192void _on_next_submit (SV *cb) 1421void _on_next_submit (SV *cb)
1193 CODE: 1422 CODE:
1194 SvREFCNT_dec (on_next_submit); 1423 SvREFCNT_dec (on_next_submit);
1195 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0; 1424 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;

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