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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.161 by root, Sun Jan 10 20:28:43 2010 UTC vs.
Revision 1.168 by root, Wed Aug 4 14:02:58 2010 UTC

… …
16#include <sys/statvfs.h> 16#include <sys/statvfs.h>
17#include <limits.h> 17#include <limits.h>
18#include <fcntl.h> 18#include <fcntl.h>
19#include <sched.h> 19#include <sched.h>
20 20
21#if _POSIX_MEMLOCK 21#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
22# include <sys/mman.h> 22# include <sys/mman.h>
23#endif 23#endif
24 24
25/* perl namespace pollution */ 25/* perl namespace pollution */
26#undef VERSION 26#undef VERSION
… …
178#endif 178#endif
179#ifndef MCL_FUTURE 179#ifndef MCL_FUTURE
180# define MCL_FUTURE 0 180# define MCL_FUTURE 0
181#endif 181#endif
182 182
183#ifndef MAP_ANONYMOUS
184# ifdef MAP_ANON
185# define MAP_ANONYMOUS MAP_ANON
186# else
187# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
188# endif
189#endif
190#ifndef MAP_HUGETLB
191# define MAP_HUGETLB 0
192#endif
193#ifndef MAP_LOCKED
194# define MAP_LOCKED 0
195#endif
196#ifndef MAP_NORESERVE
197# define MAP_NORESERVE 0
198#endif
199#ifndef MAP_POPULATE
200# define MAP_POPULATE 0
201#endif
202#ifndef MAP_NONBLOCK
203# define MAP_NONBLOCK 0
204#endif
205
206#ifndef PAGESIZE
207# define PAGESIZE sysconf (_SC_PAGESIZE)
208#endif
209
183static int req_invoke (eio_req *req); 210static int req_invoke (eio_req *req);
184#define EIO_FINISH(req) req_invoke (req) 211#define EIO_FINISH(req) req_invoke (req)
185static void req_destroy (eio_req *grp); 212static void req_destroy (eio_req *grp);
186#define EIO_DESTROY(req) req_destroy (req) 213#define EIO_DESTROY(req) req_destroy (req)
187 214
… …
277 } 304 }
278} 305}
279 306
280static int req_invoke (eio_req *req) 307static int req_invoke (eio_req *req)
281{ 308{
282 dSP;
283
284 if (req->flags & FLAG_SV2_RO_OFF) 309 if (req->flags & FLAG_SV2_RO_OFF)
285 SvREADONLY_off (req->sv2); 310 SvREADONLY_off (req->sv2);
286 311
287 if (!EIO_CANCELLED (req) && req->callback) 312 if (!EIO_CANCELLED (req) && req->callback)
288 { 313 {
314 dSP;
315 static SV *sv_result_cache; /* caches the result integer SV */
316 SV *sv_result;
317
289 ENTER; 318 ENTER;
290 SAVETMPS; 319 SAVETMPS;
291 PUSHMARK (SP); 320 PUSHMARK (SP);
292 EXTEND (SP, 1); 321 EXTEND (SP, 1);
322
323 /* do not recreate the result IV from scratch each time */
324 if (expect_true (sv_result_cache))
325 {
326 sv_result = sv_result_cache; sv_result_cache = 0;
327 SvIV_set (sv_result, req->result);
328 }
329 else
330 {
331 sv_result = newSViv (req->result);
332 SvREADONLY_on (sv_result);
333 }
293 334
294 switch (req->type) 335 switch (req->type)
295 { 336 {
296 case EIO_READDIR: 337 case EIO_READDIR:
297 { 338 {
… …
442 case EIO_LSTAT: 483 case EIO_LSTAT:
443 case EIO_FSTAT: 484 case EIO_FSTAT:
444 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT; 485 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
445 PL_laststatval = req->result; 486 PL_laststatval = req->result;
446 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2); 487 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
447 PUSHs (sv_2mortal (newSViv (req->result))); 488 PUSHs (sv_result);
448 break; 489 break;
449 490
450 case EIO_READ: 491 case EIO_READ:
451 { 492 {
452 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0)); 493 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
453 *SvEND (req->sv2) = 0; 494 *SvEND (req->sv2) = 0;
454 SvPOK_only (req->sv2); 495 SvPOK_only (req->sv2);
455 SvSETMAGIC (req->sv2); 496 SvSETMAGIC (req->sv2);
456 PUSHs (sv_2mortal (newSViv (req->result))); 497 PUSHs (sv_result);
457 } 498 }
458 break; 499 break;
459 500
460 case EIO_DUP2: 501 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
461 if (req->result > 0) 502 if (req->result > 0)
462 req->result = 0; 503 SvIV_set (sv_result, 0);
463 /* FALLTHROUGH */ 504 /* FALLTHROUGH */
464 505
465 default: 506 default:
466 PUSHs (sv_2mortal (newSViv (req->result))); 507 PUSHs (sv_result);
467 break; 508 break;
468 } 509 }
469 510
470 errno = req->errorno; 511 errno = req->errorno;
471 512
472 PUTBACK; 513 PUTBACK;
473 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD); 514 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
474 SPAGAIN; 515 SPAGAIN;
516
517 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
518 SvREFCNT_dec (sv_result);
519 else
520 sv_result_cache = sv_result;
475 521
476 FREETMPS; 522 FREETMPS;
477 LEAVE; 523 LEAVE;
478 524
479 PUTBACK; 525 PUTBACK;
… …
554 600
555static void atfork_child (void) 601static void atfork_child (void)
556{ 602{
557 create_respipe (); 603 create_respipe ();
558} 604}
605
606/*****************************************************************************/
607
608#if !_POSIX_MAPPED_FILES
609# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
610# define munmap(addr,length) (errno = ENOSYS, -1)
611#endif
612
613#define MMAP_MAGIC PERL_MAGIC_ext
614
615static int
616mmap_free (pTHX_ SV *sv, MAGIC *mg)
617{
618 int old_errno = errno;
619 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
620 errno = old_errno;
621
622 mg->mg_obj = 0; /* just in case */
623
624 SvREADONLY_off (sv);
625
626 if (SvPVX (sv) != mg->mg_ptr)
627 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
628
629 SvCUR_set (sv, 0);
630 SvPVX (sv) = 0;
631 SvOK_off (sv);
632
633 return 0;
634}
635
636static MGVTBL mmap_vtbl = {
637 0, 0, 0, 0, mmap_free
638};
639
640/*****************************************************************************/
559 641
560static SV * 642static SV *
561get_cb (SV *cb_sv) 643get_cb (SV *cb_sv)
562{ 644{
563 SvGETMAGIC (cb_sv); 645 SvGETMAGIC (cb_sv);
… …
595{ 677{
596 static const struct { 678 static const struct {
597 const char *name; 679 const char *name;
598 IV iv; 680 IV iv;
599 } *civ, const_iv[] = { 681 } *civ, const_iv[] = {
600# define const_iv(name, value) { # name, (IV) value }, 682# define const_niv(name, value) { # name, (IV) value },
683# define const_iv(name) { # name, (IV) name },
601# define const_eio(name) { # name, (IV) EIO_ ## name }, 684# define const_eio(name) { # name, (IV) EIO_ ## name },
602 const_iv (EXDEV , EXDEV) 685 const_iv (EXDEV)
603 const_iv (ENOSYS , ENOSYS) 686 const_iv (ENOSYS)
604 const_iv (O_RDONLY, O_RDONLY) 687 const_iv (O_RDONLY)
605 const_iv (O_WRONLY, O_WRONLY) 688 const_iv (O_WRONLY)
689 const_iv (O_RDWR)
606 const_iv (O_CREAT , O_CREAT) 690 const_iv (O_CREAT)
607 const_iv (O_TRUNC , O_TRUNC) 691 const_iv (O_TRUNC)
692 const_iv (O_EXCL)
693 const_iv (O_APPEND)
608#ifndef _WIN32 694#ifndef _WIN32
609 const_iv (S_IFIFO , S_IFIFO) 695 const_iv (S_IFIFO)
610#endif 696#endif
611 const_iv (FADV_NORMAL , POSIX_FADV_NORMAL) 697 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
612 const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL) 698 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
613 const_iv (FADV_RANDOM , POSIX_FADV_RANDOM) 699 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
614 const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 700 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
615 const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 701 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
616 const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 702 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
617 703
618 const_iv (ST_RDONLY , ST_RDONLY) 704 const_iv (ST_RDONLY)
619 const_iv (ST_NOSUID , ST_NOSUID) 705 const_iv (ST_NOSUID)
620 const_iv (ST_NODEV , ST_NODEV) 706 const_iv (ST_NODEV)
621 const_iv (ST_NOEXEC , ST_NOEXEC) 707 const_iv (ST_NOEXEC)
622 const_iv (ST_SYNCHRONOUS , ST_SYNCHRONOUS) 708 const_iv (ST_SYNCHRONOUS)
623 const_iv (ST_MANDLOCK , ST_MANDLOCK) 709 const_iv (ST_MANDLOCK)
624 const_iv (ST_WRITE , ST_WRITE) 710 const_iv (ST_WRITE)
625 const_iv (ST_APPEND , ST_APPEND) 711 const_iv (ST_APPEND)
626 const_iv (ST_IMMUTABLE , ST_IMMUTABLE) 712 const_iv (ST_IMMUTABLE)
627 const_iv (ST_NOATIME , ST_NOATIME) 713 const_iv (ST_NOATIME)
628 const_iv (ST_NODIRATIME , ST_NODIRATIME) 714 const_iv (ST_NODIRATIME)
629 const_iv (ST_RELATIME , ST_RELATIME) 715 const_iv (ST_RELATIME)
630 716
631 const_iv (MCL_FUTURE , MCL_FUTURE) 717 const_iv (PROT_EXEC)
718 const_iv (PROT_NONE)
719 const_iv (PROT_READ)
720 const_iv (PROT_WRITE)
721
722 /*const_iv (MAP_FIXED)*/
723 const_iv (MAP_PRIVATE)
724 const_iv (MAP_SHARED)
725 const_iv (MAP_ANONYMOUS)
726
727 /* linuxish */
728 const_iv (MAP_HUGETLB)
729 const_iv (MAP_LOCKED)
730 const_iv (MAP_NORESERVE)
731 const_iv (MAP_POPULATE)
732 const_iv (MAP_NONBLOCK)
733
734 const_iv (MCL_FUTURE)
632 const_iv (MCL_CURRENT , MCL_CURRENT) 735 const_iv (MCL_CURRENT)
633 736
634 const_eio (MS_ASYNC) 737 const_eio (MS_ASYNC)
635 const_eio (MS_INVALIDATE) 738 const_eio (MS_INVALIDATE)
636 const_eio (MS_SYNC) 739 const_eio (MS_SYNC)
637 740
… …
661 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1); 764 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
662 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1); 765 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
663 766
664 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; ) 767 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
665 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv)); 768 newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
769
770 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
666 771
667 create_respipe (); 772 create_respipe ();
668 773
669 if (eio_init (want_poll, done_poll) < 0) 774 if (eio_init (want_poll, done_poll) < 0)
670 croak ("IO::AIO: unable to initialise eio library"); 775 croak ("IO::AIO: unable to initialise eio library");
… …
1260 PROTOTYPE: $$$$ 1365 PROTOTYPE: $$$$
1261 CODE: 1366 CODE:
1262#if _XOPEN_SOURCE >= 600 && !NO_FADVISE 1367#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1263 RETVAL = posix_fadvise (fh, offset, length, advice); 1368 RETVAL = posix_fadvise (fh, offset, length, advice);
1264#else 1369#else
1265 RETVAL = errno = ENOSYS; 1370 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1266#endif 1371#endif
1267 OUTPUT: 1372 OUTPUT:
1268 RETVAL 1373 RETVAL
1269 1374
1270ssize_t 1375ssize_t
… …
1272 PROTOTYPE: $$$$ 1377 PROTOTYPE: $$$$
1273 CODE: 1378 CODE:
1274 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1379 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1275 OUTPUT: 1380 OUTPUT:
1276 RETVAL 1381 RETVAL
1382
1383void
1384mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1385 PROTOTYPE: $$$$$;$
1386 PPCODE:
1387 sv_unmagic (scalar, MMAP_MAGIC);
1388{
1389 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1390 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1391 if (addr == (void *)-1)
1392 XSRETURN_NO;
1393
1394 sv_force_normal (scalar);
1395
1396 /* we store the length in mg_obj, as namlen is I32 :/ */
1397 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1398 ->mg_obj = (SV *)length;
1399
1400 SvUPGRADE (scalar, SVt_PV); /* nop... */
1401
1402 if (!(prot & PROT_WRITE))
1403 SvREADONLY_on (scalar);
1404
1405 if (SvLEN (scalar))
1406 Safefree (SvPVX (scalar));
1407
1408 SvPVX (scalar) = (char *)addr;
1409 SvCUR_set (scalar, length);
1410 SvLEN_set (scalar, 0);
1411 SvPOK_only (scalar);
1412
1413 XSRETURN_YES;
1414}
1415
1416void
1417munmap (SV *scalar)
1418 PROTOTYPE: $
1419 CODE:
1420 sv_unmagic (scalar, MMAP_MAGIC);
1277 1421
1278int 1422int
1279mlockall (int flags) 1423mlockall (int flags)
1280 PROTOTYPE: $ 1424 PROTOTYPE: $
1281 CODE: 1425 CODE:
… …
1284 extern int mallopt (int, int); 1428 extern int mallopt (int, int);
1285 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ 1429 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1286#endif 1430#endif
1287 mlockall (flags); 1431 mlockall (flags);
1288#else 1432#else
1289 RETVAL ＝-1; 1433 RETVAL = -1;
1290 errno = ENOSYS; 1434 errno = ENOSYS;
1291#endif 1435#endif
1292 OUTPUT: 1436 OUTPUT:
1293 RETVAL 1437 RETVAL
1294 1438
… …
1297 PROTOTYPE: 1441 PROTOTYPE:
1298 CODE: 1442 CODE:
1299#if _POSIX_MEMLOCK 1443#if _POSIX_MEMLOCK
1300 munlockall (); 1444 munlockall ();
1301#else 1445#else
1302 RETVAL ＝-1; 1446 RETVAL = -1;
1303 errno = ENOSYS; 1447 errno = ENOSYS;
1304#endif 1448#endif
1305 OUTPUT: 1449 OUTPUT:
1306 RETVAL 1450 RETVAL
1307 1451

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