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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.166 by root, Sun May 9 20:43:28 2010 UTC vs.
Revision 1.175 by root, Wed Dec 1 04:43:12 2010 UTC

… …
122 122
123#include "libeio/eio.h" 123#include "libeio/eio.h"
124 124
125#ifndef POSIX_FADV_NORMAL 125#ifndef POSIX_FADV_NORMAL
126# define POSIX_FADV_NORMAL 0 126# define POSIX_FADV_NORMAL 0
127# define NO_FADVISE 1
128#endif 127#endif
129#ifndef POSIX_FADV_SEQUENTIAL 128#ifndef POSIX_FADV_SEQUENTIAL
130# define POSIX_FADV_SEQUENTIAL 0 129# define POSIX_FADV_SEQUENTIAL 0
131#endif 130#endif
132#ifndef POSIX_FADV_RANDOM 131#ifndef POSIX_FADV_RANDOM
… …
140#endif 139#endif
141#ifndef POSIX_FADV_DONTNEED 140#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0 141# define POSIX_FADV_DONTNEED 0
143#endif 142#endif
144 143
144#if !HAVE_POSIX_FADVISE
145# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef POSIX_MADV_NORMAL
149# define POSIX_MADV_NORMAL 0
150#endif
151#ifndef POSIX_MADV_SEQUENTIAL
152# define POSIX_MADV_SEQUENTIAL 0
153#endif
154#ifndef POSIX_MADV_RANDOM
155# define POSIX_MADV_RANDOM 0
156#endif
157#ifndef POSIX_MADV_WILLNEED
158# define POSIX_MADV_WILLNEED 0
159#endif
160#ifndef POSIX_MADV_DONTNEED
161# define POSIX_MADV_DONTNEED 0
162#endif
163
164#if !HAVE_POSIX_MADVISE
165# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
166#endif
167
168#ifndef PROT_NONE
169# define PROT_NONE 0
170#endif
171#ifndef PROT_READ
172# define PROT_READ 0
173#endif
174#ifndef PROT_WRITE
175# define PROT_READ 0
176#endif
177#ifndef PROT_EXEC
178# define PROT_EXEC 0
179#endif
180
145#ifndef ST_NODEV 181#ifndef ST_NODEV
146# define ST_NODEV 0 182# define ST_NODEV 0
147#endif 183#endif
148#ifndef ST_NOEXEC 184#ifndef ST_NOEXEC
149# define ST_NOEXEC 0 185# define ST_NOEXEC 0
… …
169#ifndef ST_NODIRATIME 205#ifndef ST_NODIRATIME
170# define ST_NODIRATIME 0 206# define ST_NODIRATIME 0
171#endif 207#endif
172#ifndef ST_RELATIME 208#ifndef ST_RELATIME
173# define ST_RELATIME 0 209# define ST_RELATIME 0
174#endif
175
176#ifndef MCL_CURRENT
177# define MCL_CURRENT 0
178#endif
179#ifndef MCL_FUTURE
180# define MCL_FUTURE 0
181#endif 210#endif
182 211
183#ifndef MAP_ANONYMOUS 212#ifndef MAP_ANONYMOUS
184# ifdef MAP_ANON 213# ifdef MAP_ANON
185# define MAP_ANONYMOUS MAP_ANON 214# define MAP_ANONYMOUS MAP_ANON
… …
496 SvSETMAGIC (req->sv2); 525 SvSETMAGIC (req->sv2);
497 PUSHs (sv_result); 526 PUSHs (sv_result);
498 } 527 }
499 break; 528 break;
500 529
501 case EIO_DUP2: 530 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
502 if (req->result > 0) 531 if (req->result > 0)
503 SvIV_set (sv_result, 0); 532 SvIV_set (sv_result, 0);
504 /* FALLTHROUGH */ 533 /* FALLTHROUGH */
505 534
506 default: 535 default:
… …
606/*****************************************************************************/ 635/*****************************************************************************/
607 636
608#if !_POSIX_MAPPED_FILES 637#if !_POSIX_MAPPED_FILES
609# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1) 638# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
610# define munmap(addr,length) (errno = ENOSYS, -1) 639# define munmap(addr,length) (errno = ENOSYS, -1)
640# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
641# define PROT_NONE 0
642# define PROT_WRITE 0
643# define MAP_PRIVATE 0
644# define MAP_SHARED 0
645# define MAP_FIXED 0
611#endif 646#endif
612 647
613#define MMAP_MAGIC PERL_MAGIC_ext 648#define MMAP_MAGIC PERL_MAGIC_ext
614 649
615static int 650static int
… …
620 errno = old_errno; 655 errno = old_errno;
621 656
622 mg->mg_obj = 0; /* just in case */ 657 mg->mg_obj = 0; /* just in case */
623 658
624 SvREADONLY_off (sv); 659 SvREADONLY_off (sv);
660
661 if (SvPVX (sv) != mg->mg_ptr)
662 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
663
625 SvCUR_set (sv, 0); 664 SvCUR_set (sv, 0);
626 SvLEN_set (sv, 0);
627 SvPVX (sv) = 0; 665 SvPVX (sv) = 0;
628 SvOK_off (sv); 666 SvOK_off (sv);
629 667
630 return 0; 668 return 0;
631} 669}
… …
696 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM) 734 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
697 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 735 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
698 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 736 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
699 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 737 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
700 738
739 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
740 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
741 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
742 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
743 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
744
701 const_iv (ST_RDONLY) 745 const_iv (ST_RDONLY)
702 const_iv (ST_NOSUID) 746 const_iv (ST_NOSUID)
703 const_iv (ST_NODEV) 747 const_iv (ST_NODEV)
704 const_iv (ST_NOEXEC) 748 const_iv (ST_NOEXEC)
705 const_iv (ST_SYNCHRONOUS) 749 const_iv (ST_SYNCHRONOUS)
… …
709 const_iv (ST_IMMUTABLE) 753 const_iv (ST_IMMUTABLE)
710 const_iv (ST_NOATIME) 754 const_iv (ST_NOATIME)
711 const_iv (ST_NODIRATIME) 755 const_iv (ST_NODIRATIME)
712 const_iv (ST_RELATIME) 756 const_iv (ST_RELATIME)
713 757
758 const_iv (PROT_NONE)
714 const_iv (PROT_EXEC) 759 const_iv (PROT_EXEC)
715 const_iv (PROT_NONE)
716 const_iv (PROT_READ) 760 const_iv (PROT_READ)
717 const_iv (PROT_WRITE) 761 const_iv (PROT_WRITE)
718 762
719 /*const_iv (MAP_FIXED)*/ 763 /*const_iv (MAP_FIXED)*/
720 const_iv (MAP_PRIVATE) 764 const_iv (MAP_PRIVATE)
… …
726 const_iv (MAP_LOCKED) 770 const_iv (MAP_LOCKED)
727 const_iv (MAP_NORESERVE) 771 const_iv (MAP_NORESERVE)
728 const_iv (MAP_POPULATE) 772 const_iv (MAP_POPULATE)
729 const_iv (MAP_NONBLOCK) 773 const_iv (MAP_NONBLOCK)
730 774
731 const_iv (MCL_FUTURE) 775 const_eio (MCL_FUTURE)
732 const_iv (MCL_CURRENT) 776 const_eio (MCL_CURRENT)
733 777
734 const_eio (MS_ASYNC) 778 const_eio (MS_ASYNC)
735 const_eio (MS_INVALIDATE) 779 const_eio (MS_INVALIDATE)
736 const_eio (MS_SYNC) 780 const_eio (MS_SYNC)
737 781
… …
811 CODE: 855 CODE:
812 max_outstanding = maxreqs; 856 max_outstanding = maxreqs;
813 857
814void 858void
815aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 859aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
816 PROTOTYPE: $$$;$
817 PPCODE: 860 PPCODE:
818{ 861{
819 dREQ; 862 dREQ;
820 863
821 req->type = EIO_OPEN; 864 req->type = EIO_OPEN;
… …
827 REQ_SEND; 870 REQ_SEND;
828} 871}
829 872
830void 873void
831aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 874aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
832 PROTOTYPE: $;$
833 ALIAS: 875 ALIAS:
834 aio_fsync = EIO_FSYNC 876 aio_fsync = EIO_FSYNC
835 aio_fdatasync = EIO_FDATASYNC 877 aio_fdatasync = EIO_FDATASYNC
836 PPCODE: 878 PPCODE:
837{ 879{
… …
845 REQ_SEND (req); 887 REQ_SEND (req);
846} 888}
847 889
848void 890void
849aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) 891aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
850 PROTOTYPE: $$$$;$
851 PPCODE: 892 PPCODE:
852{ 893{
853 int fd = s_fileno_croak (fh, 0); 894 int fd = s_fileno_croak (fh, 0);
854 dREQ; 895 dREQ;
855 896
… …
863 REQ_SEND (req); 904 REQ_SEND (req);
864} 905}
865 906
866void 907void
867aio_close (SV *fh, SV *callback=&PL_sv_undef) 908aio_close (SV *fh, SV *callback=&PL_sv_undef)
868 PROTOTYPE: $;$
869 PPCODE: 909 PPCODE:
870{ 910{
871 static int close_pipe = -1; /* dummy fd to close fds via dup2 */ 911 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
872 int fd = s_fileno_croak (fh, 0); 912 int fd = s_fileno_croak (fh, 0);
873 dREQ; 913 dREQ;
… …
895void 935void
896aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 936aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
897 ALIAS: 937 ALIAS:
898 aio_read = EIO_READ 938 aio_read = EIO_READ
899 aio_write = EIO_WRITE 939 aio_write = EIO_WRITE
900 PROTOTYPE: $$$$$;$
901 PPCODE: 940 PPCODE:
902{ 941{
903 STRLEN svlen; 942 STRLEN svlen;
904 int fd = s_fileno_croak (fh, ix == EIO_WRITE); 943 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
905 char *svptr = SvPVbyte (data, svlen); 944 char *svptr = SvPVbyte (data, svlen);
… …
946 } 985 }
947} 986}
948 987
949void 988void
950aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 989aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
951 PROTOTYPE: $$;$
952 PPCODE: 990 PPCODE:
953{ 991{
954 SV *data; 992 SV *data;
955 dREQ; 993 dREQ;
956 994
… …
961 REQ_SEND; 999 REQ_SEND;
962} 1000}
963 1001
964void 1002void
965aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef) 1003aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
966 PROTOTYPE: $$$$;$
967 PPCODE: 1004 PPCODE:
968{ 1005{
969 int ifd = s_fileno_croak (in_fh , 0); 1006 int ifd = s_fileno_croak (in_fh , 0);
970 int ofd = s_fileno_croak (out_fh, 1); 1007 int ofd = s_fileno_croak (out_fh, 1);
971 dREQ; 1008 dREQ;
… …
981 REQ_SEND; 1018 REQ_SEND;
982} 1019}
983 1020
984void 1021void
985aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) 1022aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
986 PROTOTYPE: $$$;$
987 PPCODE: 1023 PPCODE:
988{ 1024{
989 int fd = s_fileno_croak (fh, 0); 1025 int fd = s_fileno_croak (fh, 0);
990 dREQ; 1026 dREQ;
991 1027
… …
1192void 1228void
1193aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef) 1229aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1194 ALIAS: 1230 ALIAS:
1195 aio_mtouch = EIO_MTOUCH 1231 aio_mtouch = EIO_MTOUCH
1196 aio_msync = EIO_MSYNC 1232 aio_msync = EIO_MSYNC
1197 PROTOTYPE: $$$$;$
1198 PPCODE: 1233 PPCODE:
1199{ 1234{
1200 STRLEN svlen; 1235 STRLEN svlen;
1236 char *svptr = SvPVbyte (data, svlen);
1201 UV len = SvUV (length); 1237 UV len = SvUV (length);
1202 char *svptr = SvPVbyte (data, svlen);
1203 1238
1204 if (offset < 0) 1239 if (offset < 0)
1205 offset += svlen; 1240 offset += svlen;
1206 1241
1207 if (offset < 0 || offset > svlen) 1242 if (offset < 0 || offset > svlen)
… …
1212 1247
1213 { 1248 {
1214 dREQ; 1249 dREQ;
1215 1250
1216 req->type = ix; 1251 req->type = ix;
1217 req->size = len;
1218 req->sv2 = SvREFCNT_inc (data); 1252 req->sv2 = SvREFCNT_inc (data);
1219 req->ptr2 = (char *)svptr + offset; 1253 req->ptr2 = (char *)svptr + offset;
1254 req->size = len;
1220 req->int1 = flags; 1255 req->int1 = flags;
1221 1256
1222 REQ_SEND; 1257 REQ_SEND;
1223 } 1258 }
1224} 1259}
1225 1260
1226void 1261void
1262aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1263 PPCODE:
1264{
1265 STRLEN svlen;
1266 char *svptr = SvPVbyte (data, svlen);
1267 UV len = SvUV (length);
1268
1269 if (offset < 0)
1270 offset += svlen;
1271
1272 if (offset < 0 || offset > svlen)
1273 croak ("offset outside of scalar");
1274
1275 if (!SvOK (length) || len + offset > svlen)
1276 len = svlen - offset;
1277
1278 {
1279 dREQ;
1280
1281 req->type = EIO_MLOCK;
1282 req->sv2 = SvREFCNT_inc (data);
1283 req->ptr2 = (char *)svptr + offset;
1284 req->size = len;
1285
1286 REQ_SEND;
1287 }
1288}
1289
1290void
1291aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1292 PPCODE:
1293{
1294 dREQ;
1295
1296 req->type = EIO_MLOCKALL;
1297 req->int1 = flags;
1298
1299 REQ_SEND;
1300}
1301
1302void
1227aio_busy (double delay, SV *callback=&PL_sv_undef) 1303aio_busy (double delay, SV *callback=&PL_sv_undef)
1228 PPCODE: 1304 PPCODE:
1229{ 1305{
1230 dREQ; 1306 dREQ;
1231 1307
… …
1235 REQ_SEND; 1311 REQ_SEND;
1236} 1312}
1237 1313
1238void 1314void
1239aio_group (SV *callback=&PL_sv_undef) 1315aio_group (SV *callback=&PL_sv_undef)
1240 PROTOTYPE: ;$
1241 PPCODE: 1316 PPCODE:
1242{ 1317{
1243 dREQ; 1318 dREQ;
1244 1319
1245 req->type = EIO_GROUP; 1320 req->type = EIO_GROUP;
… …
1262 REQ_SEND; 1337 REQ_SEND;
1263} 1338}
1264 1339
1265int 1340int
1266aioreq_pri (int pri = 0) 1341aioreq_pri (int pri = 0)
1267 PROTOTYPE: ;$
1268 CODE: 1342 CODE:
1269 RETVAL = next_pri; 1343 RETVAL = next_pri;
1270 if (items > 0) 1344 if (items > 0)
1271 { 1345 {
1272 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN; 1346 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
… …
1284 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX; 1358 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1285 next_pri = nice; 1359 next_pri = nice;
1286 1360
1287void 1361void
1288flush () 1362flush ()
1289 PROTOTYPE:
1290 CODE: 1363 CODE:
1291 while (eio_nreqs ()) 1364 while (eio_nreqs ())
1292 { 1365 {
1293 poll_wait (); 1366 poll_wait ();
1294 poll_cb (); 1367 poll_cb ();
1295 } 1368 }
1296 1369
1297int 1370int
1298poll() 1371poll ()
1299 PROTOTYPE:
1300 CODE: 1372 CODE:
1301 poll_wait (); 1373 poll_wait ();
1302 RETVAL = poll_cb (); 1374 RETVAL = poll_cb ();
1303 OUTPUT: 1375 OUTPUT:
1304 RETVAL 1376 RETVAL
1305 1377
1306int 1378int
1307poll_fileno() 1379poll_fileno ()
1308 PROTOTYPE:
1309 CODE: 1380 CODE:
1310 RETVAL = s_epipe_fd (&respipe); 1381 RETVAL = s_epipe_fd (&respipe);
1311 OUTPUT: 1382 OUTPUT:
1312 RETVAL 1383 RETVAL
1313 1384
1314int 1385int
1315poll_cb(...) 1386poll_cb (...)
1316 PROTOTYPE: 1387 PROTOTYPE:
1317 CODE: 1388 CODE:
1318 RETVAL = poll_cb (); 1389 RETVAL = poll_cb ();
1319 OUTPUT: 1390 OUTPUT:
1320 RETVAL 1391 RETVAL
1321 1392
1322void 1393void
1323poll_wait() 1394poll_wait ()
1324 PROTOTYPE:
1325 CODE: 1395 CODE:
1326 poll_wait (); 1396 poll_wait ();
1327 1397
1328int 1398int
1329nreqs() 1399nreqs ()
1330 PROTOTYPE:
1331 CODE: 1400 CODE:
1332 RETVAL = eio_nreqs (); 1401 RETVAL = eio_nreqs ();
1333 OUTPUT: 1402 OUTPUT:
1334 RETVAL 1403 RETVAL
1335 1404
1336int 1405int
1337nready() 1406nready ()
1338 PROTOTYPE:
1339 CODE: 1407 CODE:
1340 RETVAL = eio_nready (); 1408 RETVAL = eio_nready ();
1341 OUTPUT: 1409 OUTPUT:
1342 RETVAL 1410 RETVAL
1343 1411
1344int 1412int
1345npending() 1413npending ()
1346 PROTOTYPE:
1347 CODE: 1414 CODE:
1348 RETVAL = eio_npending (); 1415 RETVAL = eio_npending ();
1349 OUTPUT: 1416 OUTPUT:
1350 RETVAL 1417 RETVAL
1351 1418
1352int 1419int
1353nthreads() 1420nthreads ()
1354 PROTOTYPE:
1355 CODE: 1421 CODE:
1356 RETVAL = eio_nthreads (); 1422 RETVAL = eio_nthreads ();
1357 OUTPUT: 1423 OUTPUT:
1358 RETVAL 1424 RETVAL
1359 1425
1360int 1426int
1361fadvise (aio_rfd fh, off_t offset, off_t length, IV advice) 1427fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1362 PROTOTYPE: $$$$
1363 CODE: 1428 CODE:
1364#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1365 RETVAL = posix_fadvise (fh, offset, length, advice); 1429 RETVAL = posix_fadvise (fh, offset, length, advice);
1366#else
1367 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1368#endif
1369 OUTPUT: 1430 OUTPUT:
1370 RETVAL 1431 RETVAL
1371 1432
1372ssize_t 1433ssize_t
1373sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count) 1434sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1374 PROTOTYPE: $$$$
1375 CODE: 1435 CODE:
1376 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1436 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1377 OUTPUT: 1437 OUTPUT:
1378 RETVAL 1438 RETVAL
1379 1439
1380void 1440void
1381mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0) 1441mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1382 PROTOTYPE: $$$$$;$
1383 PPCODE: 1442 PPCODE:
1384 sv_unmagic (scalar, MMAP_MAGIC); 1443 sv_unmagic (scalar, MMAP_MAGIC);
1385{ 1444{
1386 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1; 1445 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1387 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 1446 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1388 if (addr == (void *)-1) 1447 if (addr == (void *)-1)
1389 XSRETURN_NO; 1448 XSRETURN_NO;
1390 1449
1450 sv_force_normal (scalar);
1451
1391 /* we store the length in mg_obj, as namlen is I32 :/ */ 1452 /* we store the length in mg_obj, as namlen is I32 :/ */
1392 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0) 1453 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1393 ->mg_obj = (SV *)length; 1454 ->mg_obj = (SV *)length;
1394 1455
1395 SvUPGRADE (scalar, SVt_PV); /* nop... */ 1456 SvUPGRADE (scalar, SVt_PV); /* nop... */
1457
1396 if (!(prot & PROT_WRITE)) 1458 if (!(prot & PROT_WRITE))
1397 SvREADONLY_on (scalar); 1459 SvREADONLY_on (scalar);
1460
1461 if (SvLEN (scalar))
1462 Safefree (SvPVX (scalar));
1398 1463
1399 SvPVX (scalar) = (char *)addr; 1464 SvPVX (scalar) = (char *)addr;
1400 SvCUR_set (scalar, length); 1465 SvCUR_set (scalar, length);
1401 SvLEN_set (scalar, 0); 1466 SvLEN_set (scalar, 0);
1402 SvPOK_only (scalar); 1467 SvPOK_only (scalar);
… …
1404 XSRETURN_YES; 1469 XSRETURN_YES;
1405} 1470}
1406 1471
1407void 1472void
1408munmap (SV *scalar) 1473munmap (SV *scalar)
1409 PROTOTYPE: $
1410 CODE: 1474 CODE:
1411 sv_unmagic (scalar, MMAP_MAGIC); 1475 sv_unmagic (scalar, MMAP_MAGIC);
1412 1476
1413int 1477int
1414mlockall (int flags) 1478madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1415 PROTOTYPE: $ 1479 ALIAS:
1480 mprotect = 1
1416 CODE: 1481 CODE:
1482{
1483 STRLEN svlen;
1484 void *addr = SvPVbyte (scalar, svlen);
1485 size_t len = SvUV (length);
1486
1487 if (offset < 0)
1488 offset += svlen;
1489
1490 if (offset < 0 || offset > svlen)
1491 croak ("offset outside of scalar");
1492
1493 if (!SvOK (length) || len + offset > svlen)
1494 len = svlen - offset;
1495
1496 addr = (void *)(((intptr_t)addr) + offset);
1497 eio_page_align (&addr, &len);
1498
1499 switch (ix)
1500 {
1501 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1502 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1503 }
1504}
1505 OUTPUT:
1506 RETVAL
1507
1508int
1509munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1510 CODE:
1511{
1512 STRLEN svlen;
1513 void *addr = SvPVbyte (scalar, svlen);
1514 size_t len = SvUV (length);
1515
1516 if (offset < 0)
1517 offset += svlen;
1518
1519 if (offset < 0 || offset > svlen)
1520 croak ("offset outside of scalar");
1521
1522 if (!SvOK (length) || len + offset > svlen)
1523 len = svlen - offset;
1524
1525 addr = (void *)(((intptr_t)addr) + offset);
1526 eio_page_align (&addr, &len);
1417#if _POSIX_MEMLOCK 1527#if _POSIX_MEMLOCK
1418#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 1528 RETVAL = munlock (addr, len);
1419 extern int mallopt (int, int);
1420 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1421#endif
1422 mlockall (flags);
1423#else 1529#else
1424 RETVAL = -1; 1530 RETVAL = ((errno = ENOSYS), -1);
1425 errno = ENOSYS;
1426#endif 1531#endif
1532}
1427 OUTPUT: 1533 OUTPUT:
1428 RETVAL 1534 RETVAL
1429 1535
1430int 1536int
1431munlockall () 1537munlockall ()
1432 PROTOTYPE:
1433 CODE: 1538 CODE:
1434#if _POSIX_MEMLOCK 1539#if _POSIX_MEMLOCK
1435 munlockall (); 1540 munlockall ();
1436#else 1541#else
1437 RETVAL = -1; 1542 RETVAL = -1;

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