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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.158 by root, Sat Jan 2 14:11:32 2010 UTC vs.
Revision 1.169 by root, Wed Aug 4 16:06:54 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
19 24
20/* perl namespace pollution */ 25/* perl namespace pollution */
21#undef VERSION 26#undef VERSION
22 27
23#ifdef _WIN32 28#ifdef _WIN32
119 124
120#ifndef POSIX_FADV_NORMAL 125#ifndef POSIX_FADV_NORMAL
121# define POSIX_FADV_NORMAL 0 126# define POSIX_FADV_NORMAL 0
122# define NO_FADVISE 1 127# define NO_FADVISE 1
123#endif 128#endif
124
125#ifndef POSIX_FADV_SEQUENTIAL 129#ifndef POSIX_FADV_SEQUENTIAL
126# define POSIX_FADV_SEQUENTIAL 0 130# define POSIX_FADV_SEQUENTIAL 0
127#endif 131#endif
128
129#ifndef POSIX_FADV_RANDOM 132#ifndef POSIX_FADV_RANDOM
130# define POSIX_FADV_RANDOM 0 133# define POSIX_FADV_RANDOM 0
131#endif 134#endif
132
133#ifndef POSIX_FADV_NOREUSE 135#ifndef POSIX_FADV_NOREUSE
134# define POSIX_FADV_NOREUSE 0 136# define POSIX_FADV_NOREUSE 0
135#endif 137#endif
136
137#ifndef POSIX_FADV_WILLNEED 138#ifndef POSIX_FADV_WILLNEED
138# define POSIX_FADV_WILLNEED 0 139# define POSIX_FADV_WILLNEED 0
139#endif 140#endif
140
141#ifndef POSIX_FADV_DONTNEED 141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0 142# define POSIX_FADV_DONTNEED 0
143#endif
144
145#ifndef POSIX_MADV_NORMAL
146# define POSIX_MADV_NORMAL 0
147# define NO_MADVISE 1
148#endif
149#ifndef POSIX_MADV_SEQUENTIAL
150# define POSIX_MADV_SEQUENTIAL 0
151#endif
152#ifndef POSIX_MADV_RANDOM
153# define POSIX_MADV_RANDOM 0
154#endif
155#ifndef POSIX_MADV_WILLNEED
156# define POSIX_MADV_WILLNEED 0
157#endif
158#ifndef POSIX_MADV_DONTNEED
159# define POSIX_MADV_DONTNEED 0
160#endif
161
162#ifndef ST_NODEV
163# define ST_NODEV 0
164#endif
165#ifndef ST_NOEXEC
166# define ST_NOEXEC 0
167#endif
168#ifndef ST_SYNCHRONOUS
169# define ST_SYNCHRONOUS 0
170#endif
171#ifndef ST_MANDLOCK
172# define ST_MANDLOCK 0
173#endif
174#ifndef ST_WRITE
175# define ST_WRITE 0
176#endif
177#ifndef ST_APPEND
178# define ST_APPEND 0
179#endif
180#ifndef ST_IMMUTABLE
181# define ST_IMMUTABLE 0
182#endif
183#ifndef ST_NOATIME
184# define ST_NOATIME 0
185#endif
186#ifndef ST_NODIRATIME
187# define ST_NODIRATIME 0
188#endif
189#ifndef ST_RELATIME
190# define ST_RELATIME 0
191#endif
192
193#ifndef MCL_CURRENT
194# define MCL_CURRENT 0
195#endif
196#ifndef MCL_FUTURE
197# define MCL_FUTURE 0
198#endif
199
200#ifndef MAP_ANONYMOUS
201# ifdef MAP_ANON
202# define MAP_ANONYMOUS MAP_ANON
203# else
204# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
205# endif
206#endif
207#ifndef MAP_HUGETLB
208# define MAP_HUGETLB 0
209#endif
210#ifndef MAP_LOCKED
211# define MAP_LOCKED 0
212#endif
213#ifndef MAP_NORESERVE
214# define MAP_NORESERVE 0
215#endif
216#ifndef MAP_POPULATE
217# define MAP_POPULATE 0
218#endif
219#ifndef MAP_NONBLOCK
220# define MAP_NONBLOCK 0
221#endif
222
223#ifndef PAGESIZE
224# define PAGESIZE sysconf (_SC_PAGESIZE)
143#endif 225#endif
144 226
145static int req_invoke (eio_req *req); 227static int req_invoke (eio_req *req);
146#define EIO_FINISH(req) req_invoke (req) 228#define EIO_FINISH(req) req_invoke (req)
147static void req_destroy (eio_req *grp); 229static void req_destroy (eio_req *grp);
239 } 321 }
240} 322}
241 323
242static int req_invoke (eio_req *req) 324static int req_invoke (eio_req *req)
243{ 325{
244 dSP;
245
246 if (req->flags & FLAG_SV2_RO_OFF) 326 if (req->flags & FLAG_SV2_RO_OFF)
247 SvREADONLY_off (req->sv2); 327 SvREADONLY_off (req->sv2);
248 328
249 if (!EIO_CANCELLED (req) && req->callback) 329 if (!EIO_CANCELLED (req) && req->callback)
250 { 330 {
331 dSP;
332 static SV *sv_result_cache; /* caches the result integer SV */
333 SV *sv_result;
334
251 ENTER; 335 ENTER;
252 SAVETMPS; 336 SAVETMPS;
253 PUSHMARK (SP); 337 PUSHMARK (SP);
254 EXTEND (SP, 1); 338 EXTEND (SP, 1);
339
340 /* do not recreate the result IV from scratch each time */
341 if (expect_true (sv_result_cache))
342 {
343 sv_result = sv_result_cache; sv_result_cache = 0;
344 SvIV_set (sv_result, req->result);
345 }
346 else
347 {
348 sv_result = newSViv (req->result);
349 SvREADONLY_on (sv_result);
350 }
255 351
256 switch (req->type) 352 switch (req->type)
257 { 353 {
258 case EIO_READDIR: 354 case EIO_READDIR:
259 { 355 {
345 441
346 PUSHs (fh); 442 PUSHs (fh);
347 } 443 }
348 break; 444 break;
349 445
446 case EIO_STATVFS:
447 case EIO_FSTATVFS:
448 {
449 SV *rv = &PL_sv_undef;
450
451 if (req->result >= 0)
452 {
453 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
454 HV *hv = newHV ();
455
456 rv = sv_2mortal (newRV_noinc ((SV *)hv));
457
458 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
459 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
460 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
461 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
462 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
463 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
464 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
465 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
466 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
467 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
468 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
469 }
470
471 PUSHs (rv);
472 }
473
474 break;
475
350 case EIO_GROUP: 476 case EIO_GROUP:
351 req->int1 = 2; /* mark group as finished */ 477 req->int1 = 2; /* mark group as finished */
352 478
353 if (req->sv1) 479 if (req->sv1)
354 { 480 {
374 case EIO_LSTAT: 500 case EIO_LSTAT:
375 case EIO_FSTAT: 501 case EIO_FSTAT:
376 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT; 502 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
377 PL_laststatval = req->result; 503 PL_laststatval = req->result;
378 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2); 504 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
379 PUSHs (sv_2mortal (newSViv (req->result))); 505 PUSHs (sv_result);
380 break; 506 break;
381 507
382 case EIO_READ: 508 case EIO_READ:
383 { 509 {
384 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0)); 510 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
385 *SvEND (req->sv2) = 0; 511 *SvEND (req->sv2) = 0;
386 SvPOK_only (req->sv2); 512 SvPOK_only (req->sv2);
387 SvSETMAGIC (req->sv2); 513 SvSETMAGIC (req->sv2);
388 PUSHs (sv_2mortal (newSViv (req->result))); 514 PUSHs (sv_result);
389 } 515 }
390 break; 516 break;
391 517
392 case EIO_DUP2: 518 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
393 if (req->result > 0) 519 if (req->result > 0)
394 req->result = 0; 520 SvIV_set (sv_result, 0);
395 /* FALLTHROUGH */ 521 /* FALLTHROUGH */
396 522
397 default: 523 default:
398 PUSHs (sv_2mortal (newSViv (req->result))); 524 PUSHs (sv_result);
399 break; 525 break;
400 } 526 }
401 527
402 errno = req->errorno; 528 errno = req->errorno;
403 529
404 PUTBACK; 530 PUTBACK;
405 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD); 531 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
406 SPAGAIN; 532 SPAGAIN;
533
534 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
535 SvREFCNT_dec (sv_result);
536 else
537 sv_result_cache = sv_result;
407 538
408 FREETMPS; 539 FREETMPS;
409 LEAVE; 540 LEAVE;
410 541
411 PUTBACK; 542 PUTBACK;
486 617
487static void atfork_child (void) 618static void atfork_child (void)
488{ 619{
489 create_respipe (); 620 create_respipe ();
490} 621}
622
623/*****************************************************************************/
624
625#if !_POSIX_MAPPED_FILES
626# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
627# define munmap(addr,length) (errno = ENOSYS, -1)
628#endif
629
630#define MMAP_MAGIC PERL_MAGIC_ext
631
632static int
633mmap_free (pTHX_ SV *sv, MAGIC *mg)
634{
635 int old_errno = errno;
636 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
637 errno = old_errno;
638
639 mg->mg_obj = 0; /* just in case */
640
641 SvREADONLY_off (sv);
642
643 if (SvPVX (sv) != mg->mg_ptr)
644 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
645
646 SvCUR_set (sv, 0);
647 SvPVX (sv) = 0;
648 SvOK_off (sv);
649
650 return 0;
651}
652
653static MGVTBL mmap_vtbl = {
654 0, 0, 0, 0, mmap_free
655};
656
657/*****************************************************************************/
491 658
492static SV * 659static SV *
493get_cb (SV *cb_sv) 660get_cb (SV *cb_sv)
494{ 661{
495 SvGETMAGIC (cb_sv); 662 SvGETMAGIC (cb_sv);
527{ 694{
528 static const struct { 695 static const struct {
529 const char *name; 696 const char *name;
530 IV iv; 697 IV iv;
531 } *civ, const_iv[] = { 698 } *civ, const_iv[] = {
532# define const_iv(name, value) { # name, (IV) value }, 699# define const_niv(name, value) { # name, (IV) value },
700# define const_iv(name) { # name, (IV) name },
533# define const_eio(name) { # name, (IV) EIO_ ## name }, 701# define const_eio(name) { # name, (IV) EIO_ ## name },
534 const_iv (EXDEV , EXDEV) 702 const_iv (EXDEV)
535 const_iv (ENOSYS , ENOSYS) 703 const_iv (ENOSYS)
536 const_iv (O_RDONLY, O_RDONLY) 704 const_iv (O_RDONLY)
537 const_iv (O_WRONLY, O_WRONLY) 705 const_iv (O_WRONLY)
706 const_iv (O_RDWR)
538 const_iv (O_CREAT , O_CREAT) 707 const_iv (O_CREAT)
539 const_iv (O_TRUNC , O_TRUNC) 708 const_iv (O_TRUNC)
709 const_iv (O_EXCL)
710 const_iv (O_APPEND)
540#ifndef _WIN32 711#ifndef _WIN32
541 const_iv (S_IFIFO , S_IFIFO) 712 const_iv (S_IFIFO)
542#endif 713#endif
543 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL) 714 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
544 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL) 715 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
545 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM) 716 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
546 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 717 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
547 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 718 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
548 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 719 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
720
721 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
722 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
723 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
724 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
725 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
726
727 const_iv (ST_RDONLY)
728 const_iv (ST_NOSUID)
729 const_iv (ST_NODEV)
730 const_iv (ST_NOEXEC)
731 const_iv (ST_SYNCHRONOUS)
732 const_iv (ST_MANDLOCK)
733 const_iv (ST_WRITE)
734 const_iv (ST_APPEND)
735 const_iv (ST_IMMUTABLE)
736 const_iv (ST_NOATIME)
737 const_iv (ST_NODIRATIME)
738 const_iv (ST_RELATIME)
739
740 const_iv (PROT_EXEC)
741 const_iv (PROT_NONE)
742 const_iv (PROT_READ)
743 const_iv (PROT_WRITE)
744
745 /*const_iv (MAP_FIXED)*/
746 const_iv (MAP_PRIVATE)
747 const_iv (MAP_SHARED)
748 const_iv (MAP_ANONYMOUS)
749
750 /* linuxish */
751 const_iv (MAP_HUGETLB)
752 const_iv (MAP_LOCKED)
753 const_iv (MAP_NORESERVE)
754 const_iv (MAP_POPULATE)
755 const_iv (MAP_NONBLOCK)
756
757 const_iv (MCL_FUTURE)
758 const_iv (MCL_CURRENT)
549 759
550 const_eio (MS_ASYNC) 760 const_eio (MS_ASYNC)
551 const_eio (MS_INVALIDATE) 761 const_eio (MS_INVALIDATE)
552 const_eio (MS_SYNC) 762 const_eio (MS_SYNC)
553 763
577 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1); 787 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
578 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1); 788 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
579 789
580 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; ) 790 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
581 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv)); 791 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
792
793 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
582 794
583 create_respipe (); 795 create_respipe ();
584 796
585 if (eio_init (want_poll, done_poll) < 0) 797 if (eio_init (want_poll, done_poll) < 0)
586 croak ("IO::AIO: unable to initialise eio library"); 798 croak ("IO::AIO: unable to initialise eio library");
813} 1025}
814 1026
815void 1027void
816aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) 1028aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
817 ALIAS: 1029 ALIAS:
818 aio_stat = EIO_STAT 1030 aio_stat = EIO_STAT
819 aio_lstat = EIO_LSTAT 1031 aio_lstat = EIO_LSTAT
1032 aio_statvfs = EIO_STATVFS
820 PPCODE: 1033 PPCODE:
821{ 1034{
822 dREQ; 1035 dREQ;
823 1036
824 req->sv1 = newSVsv (fh_or_path); 1037 req->sv1 = newSVsv (fh_or_path);
828 req->type = ix; 1041 req->type = ix;
829 req->ptr1 = SvPVbyte_nolen (req->sv1); 1042 req->ptr1 = SvPVbyte_nolen (req->sv1);
830 } 1043 }
831 else 1044 else
832 { 1045 {
833 req->type = EIO_FSTAT; 1046 req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
834 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1047 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
835 } 1048 }
836 1049
837 REQ_SEND; 1050 REQ_SEND;
838} 1051}
1175 PROTOTYPE: $$$$ 1388 PROTOTYPE: $$$$
1176 CODE: 1389 CODE:
1177#if _XOPEN_SOURCE >= 600 && !NO_FADVISE 1390#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1178 RETVAL = posix_fadvise (fh, offset, length, advice); 1391 RETVAL = posix_fadvise (fh, offset, length, advice);
1179#else 1392#else
1180 RETVAL = errno = ENOSYS; 1393 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1181#endif 1394#endif
1182 OUTPUT: 1395 OUTPUT:
1183 RETVAL 1396 RETVAL
1184 1397
1185ssize_t 1398ssize_t
1188 CODE: 1401 CODE:
1189 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1402 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1190 OUTPUT: 1403 OUTPUT:
1191 RETVAL 1404 RETVAL
1192 1405
1406void
1407mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1408 PROTOTYPE: $$$$$;$
1409 PPCODE:
1410 sv_unmagic (scalar, MMAP_MAGIC);
1411{
1412 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1413 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1414 if (addr == (void *)-1)
1415 XSRETURN_NO;
1416
1417 sv_force_normal (scalar);
1418
1419 /* we store the length in mg_obj, as namlen is I32 :/ */
1420 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1421 ->mg_obj = (SV *)length;
1422
1423 SvUPGRADE (scalar, SVt_PV); /* nop... */
1424
1425 if (!(prot & PROT_WRITE))
1426 SvREADONLY_on (scalar);
1427
1428 if (SvLEN (scalar))
1429 Safefree (SvPVX (scalar));
1430
1431 SvPVX (scalar) = (char *)addr;
1432 SvCUR_set (scalar, length);
1433 SvLEN_set (scalar, 0);
1434 SvPOK_only (scalar);
1435
1436 XSRETURN_YES;
1437}
1438
1439void
1440munmap (SV *scalar)
1441 PROTOTYPE: $
1442 CODE:
1443 sv_unmagic (scalar, MMAP_MAGIC);
1444
1445int
1446madvise (SV *scalar, off_t offset, off_t length, IV advice)
1447 PROTOTYPE: $$$$
1448 CODE:
1449{
1450 char *addr = SvPV_nolen (scalar) + offset;
1451
1452 if (!SvOK (ST (2)))
1453 length = SvCUR (scalar) - offset;
1454
1455 if (addr >= SvEND (scalar) || length <= 0)
1456 XSRETURN_EMPTY;
1457
1458 #if _XOPEN_SOURCE >= 600 && !NO_MADVISE
1459 RETVAL = posix_madvise (addr, length, advice);
1460 #else
1461 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1462 #endif
1463}
1464 OUTPUT:
1465 RETVAL
1466
1467int
1468mlockall (int flags)
1469 PROTOTYPE: $
1470 CODE:
1471#if _POSIX_MEMLOCK
1472#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
1473 extern int mallopt (int, int);
1474 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1475#endif
1476 mlockall (flags);
1477#else
1478 RETVAL = -1;
1479 errno = ENOSYS;
1480#endif
1481 OUTPUT:
1482 RETVAL
1483
1484int
1485munlockall ()
1486 PROTOTYPE:
1487 CODE:
1488#if _POSIX_MEMLOCK
1489 munlockall ();
1490#else
1491 RETVAL = -1;
1492 errno = ENOSYS;
1493#endif
1494 OUTPUT:
1495 RETVAL
1496
1193void _on_next_submit (SV *cb) 1497void _on_next_submit (SV *cb)
1194 CODE: 1498 CODE:
1195 SvREFCNT_dec (on_next_submit); 1499 SvREFCNT_dec (on_next_submit);
1196 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0; 1500 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1197 1501

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