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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.165 by root, Sun May 9 20:42:55 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
… …
304 } 333 }
305} 334}
306 335
307static int req_invoke (eio_req *req) 336static int req_invoke (eio_req *req)
308{ 337{
309 dSP;
310
311 if (req->flags & FLAG_SV2_RO_OFF) 338 if (req->flags & FLAG_SV2_RO_OFF)
312 SvREADONLY_off (req->sv2); 339 SvREADONLY_off (req->sv2);
313 340
314 if (!EIO_CANCELLED (req) && req->callback) 341 if (!EIO_CANCELLED (req) && req->callback)
315 { 342 {
343 dSP;
316 static SV *sv_result_cache; /* caches the result integer SV */ 344 static SV *sv_result_cache; /* caches the result integer SV */
317 SV *sv_result; 345 SV *sv_result;
318 346
319 ENTER; 347 ENTER;
320 SAVETMPS; 348 SAVETMPS;
… …
497 SvSETMAGIC (req->sv2); 525 SvSETMAGIC (req->sv2);
498 PUSHs (sv_result); 526 PUSHs (sv_result);
499 } 527 }
500 break; 528 break;
501 529
502 case EIO_DUP2: 530 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
503 if (req->result > 0) 531 if (req->result > 0)
504 SvIV_set (sv_result, 0); 532 SvIV_set (sv_result, 0);
505 /* FALLTHROUGH */ 533 /* FALLTHROUGH */
506 534
507 default: 535 default:
… …
607/*****************************************************************************/ 635/*****************************************************************************/
608 636
609#if !_POSIX_MAPPED_FILES 637#if !_POSIX_MAPPED_FILES
610# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1) 638# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
611# 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
612#endif 646#endif
613 647
614#define MMAP_MAGIC PERL_MAGIC_ext 648#define MMAP_MAGIC PERL_MAGIC_ext
615 649
616static int 650static int
… …
621 errno = old_errno; 655 errno = old_errno;
622 656
623 mg->mg_obj = 0; /* just in case */ 657 mg->mg_obj = 0; /* just in case */
624 658
625 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
626 SvCUR_set (sv, 0); 664 SvCUR_set (sv, 0);
627 SvLEN_set (sv, 0);
628 SvPVX (sv) = 0; 665 SvPVX (sv) = 0;
629 SvOK_off (sv); 666 SvOK_off (sv);
630 667
631 return 0; 668 return 0;
632} 669}
… …
697 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM) 734 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
698 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 735 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
699 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 736 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
700 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 737 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
701 738
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
702 const_iv (ST_RDONLY) 745 const_iv (ST_RDONLY)
703 const_iv (ST_NOSUID) 746 const_iv (ST_NOSUID)
704 const_iv (ST_NODEV) 747 const_iv (ST_NODEV)
705 const_iv (ST_NOEXEC) 748 const_iv (ST_NOEXEC)
706 const_iv (ST_SYNCHRONOUS) 749 const_iv (ST_SYNCHRONOUS)
… …
710 const_iv (ST_IMMUTABLE) 753 const_iv (ST_IMMUTABLE)
711 const_iv (ST_NOATIME) 754 const_iv (ST_NOATIME)
712 const_iv (ST_NODIRATIME) 755 const_iv (ST_NODIRATIME)
713 const_iv (ST_RELATIME) 756 const_iv (ST_RELATIME)
714 757
758 const_iv (PROT_NONE)
715 const_iv (PROT_EXEC) 759 const_iv (PROT_EXEC)
716 const_iv (PROT_NONE)
717 const_iv (PROT_READ) 760 const_iv (PROT_READ)
718 const_iv (PROT_WRITE) 761 const_iv (PROT_WRITE)
719 762
720 /*const_iv (MAP_FIXED)*/ 763 /*const_iv (MAP_FIXED)*/
721 const_iv (MAP_PRIVATE) 764 const_iv (MAP_PRIVATE)
… …
727 const_iv (MAP_LOCKED) 770 const_iv (MAP_LOCKED)
728 const_iv (MAP_NORESERVE) 771 const_iv (MAP_NORESERVE)
729 const_iv (MAP_POPULATE) 772 const_iv (MAP_POPULATE)
730 const_iv (MAP_NONBLOCK) 773 const_iv (MAP_NONBLOCK)
731 774
732 const_iv (MCL_FUTURE) 775 const_eio (MCL_FUTURE)
733 const_iv (MCL_CURRENT) 776 const_eio (MCL_CURRENT)
734 777
735 const_eio (MS_ASYNC) 778 const_eio (MS_ASYNC)
736 const_eio (MS_INVALIDATE) 779 const_eio (MS_INVALIDATE)
737 const_eio (MS_SYNC) 780 const_eio (MS_SYNC)
738 781
… …
812 CODE: 855 CODE:
813 max_outstanding = maxreqs; 856 max_outstanding = maxreqs;
814 857
815void 858void
816aio_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)
817 PROTOTYPE: $$$;$
818 PPCODE: 860 PPCODE:
819{ 861{
820 dREQ; 862 dREQ;
821 863
822 req->type = EIO_OPEN; 864 req->type = EIO_OPEN;
… …
828 REQ_SEND; 870 REQ_SEND;
829} 871}
830 872
831void 873void
832aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 874aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
833 PROTOTYPE: $;$
834 ALIAS: 875 ALIAS:
835 aio_fsync = EIO_FSYNC 876 aio_fsync = EIO_FSYNC
836 aio_fdatasync = EIO_FDATASYNC 877 aio_fdatasync = EIO_FDATASYNC
837 PPCODE: 878 PPCODE:
838{ 879{
… …
846 REQ_SEND (req); 887 REQ_SEND (req);
847} 888}
848 889
849void 890void
850aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) 891aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
851 PROTOTYPE: $$$$;$
852 PPCODE: 892 PPCODE:
853{ 893{
854 int fd = s_fileno_croak (fh, 0); 894 int fd = s_fileno_croak (fh, 0);
855 dREQ; 895 dREQ;
856 896
… …
864 REQ_SEND (req); 904 REQ_SEND (req);
865} 905}
866 906
867void 907void
868aio_close (SV *fh, SV *callback=&PL_sv_undef) 908aio_close (SV *fh, SV *callback=&PL_sv_undef)
869 PROTOTYPE: $;$
870 PPCODE: 909 PPCODE:
871{ 910{
872 static int close_pipe = -1; /* dummy fd to close fds via dup2 */ 911 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
873 int fd = s_fileno_croak (fh, 0); 912 int fd = s_fileno_croak (fh, 0);
874 dREQ; 913 dREQ;
… …
896void 935void
897aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 936aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
898 ALIAS: 937 ALIAS:
899 aio_read = EIO_READ 938 aio_read = EIO_READ
900 aio_write = EIO_WRITE 939 aio_write = EIO_WRITE
901 PROTOTYPE: $$$$$;$
902 PPCODE: 940 PPCODE:
903{ 941{
904 STRLEN svlen; 942 STRLEN svlen;
905 int fd = s_fileno_croak (fh, ix == EIO_WRITE); 943 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
906 char *svptr = SvPVbyte (data, svlen); 944 char *svptr = SvPVbyte (data, svlen);
… …
947 } 985 }
948} 986}
949 987
950void 988void
951aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 989aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
952 PROTOTYPE: $$;$
953 PPCODE: 990 PPCODE:
954{ 991{
955 SV *data; 992 SV *data;
956 dREQ; 993 dREQ;
957 994
… …
962 REQ_SEND; 999 REQ_SEND;
963} 1000}
964 1001
965void 1002void
966aio_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)
967 PROTOTYPE: $$$$;$
968 PPCODE: 1004 PPCODE:
969{ 1005{
970 int ifd = s_fileno_croak (in_fh , 0); 1006 int ifd = s_fileno_croak (in_fh , 0);
971 int ofd = s_fileno_croak (out_fh, 1); 1007 int ofd = s_fileno_croak (out_fh, 1);
972 dREQ; 1008 dREQ;
… …
982 REQ_SEND; 1018 REQ_SEND;
983} 1019}
984 1020
985void 1021void
986aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) 1022aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
987 PROTOTYPE: $$$;$
988 PPCODE: 1023 PPCODE:
989{ 1024{
990 int fd = s_fileno_croak (fh, 0); 1025 int fd = s_fileno_croak (fh, 0);
991 dREQ; 1026 dREQ;
992 1027
… …
1193void 1228void
1194aio_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)
1195 ALIAS: 1230 ALIAS:
1196 aio_mtouch = EIO_MTOUCH 1231 aio_mtouch = EIO_MTOUCH
1197 aio_msync = EIO_MSYNC 1232 aio_msync = EIO_MSYNC
1198 PROTOTYPE: $$$$;$
1199 PPCODE: 1233 PPCODE:
1200{ 1234{
1201 STRLEN svlen; 1235 STRLEN svlen;
1236 char *svptr = SvPVbyte (data, svlen);
1202 UV len = SvUV (length); 1237 UV len = SvUV (length);
1203 char *svptr = SvPVbyte (data, svlen);
1204 1238
1205 if (offset < 0) 1239 if (offset < 0)
1206 offset += svlen; 1240 offset += svlen;
1207 1241
1208 if (offset < 0 || offset > svlen) 1242 if (offset < 0 || offset > svlen)
… …
1213 1247
1214 { 1248 {
1215 dREQ; 1249 dREQ;
1216 1250
1217 req->type = ix; 1251 req->type = ix;
1218 req->size = len;
1219 req->sv2 = SvREFCNT_inc (data); 1252 req->sv2 = SvREFCNT_inc (data);
1220 req->ptr2 = (char *)svptr + offset; 1253 req->ptr2 = (char *)svptr + offset;
1254 req->size = len;
1221 req->int1 = flags; 1255 req->int1 = flags;
1222 1256
1223 REQ_SEND; 1257 REQ_SEND;
1224 } 1258 }
1225} 1259}
1226 1260
1227void 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
1228aio_busy (double delay, SV *callback=&PL_sv_undef) 1303aio_busy (double delay, SV *callback=&PL_sv_undef)
1229 PPCODE: 1304 PPCODE:
1230{ 1305{
1231 dREQ; 1306 dREQ;
1232 1307
… …
1236 REQ_SEND; 1311 REQ_SEND;
1237} 1312}
1238 1313
1239void 1314void
1240aio_group (SV *callback=&PL_sv_undef) 1315aio_group (SV *callback=&PL_sv_undef)
1241 PROTOTYPE: ;$
1242 PPCODE: 1316 PPCODE:
1243{ 1317{
1244 dREQ; 1318 dREQ;
1245 1319
1246 req->type = EIO_GROUP; 1320 req->type = EIO_GROUP;
… …
1263 REQ_SEND; 1337 REQ_SEND;
1264} 1338}
1265 1339
1266int 1340int
1267aioreq_pri (int pri = 0) 1341aioreq_pri (int pri = 0)
1268 PROTOTYPE: ;$
1269 CODE: 1342 CODE:
1270 RETVAL = next_pri; 1343 RETVAL = next_pri;
1271 if (items > 0) 1344 if (items > 0)
1272 { 1345 {
1273 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN; 1346 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
… …
1285 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX; 1358 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1286 next_pri = nice; 1359 next_pri = nice;
1287 1360
1288void 1361void
1289flush () 1362flush ()
1290 PROTOTYPE:
1291 CODE: 1363 CODE:
1292 while (eio_nreqs ()) 1364 while (eio_nreqs ())
1293 { 1365 {
1294 poll_wait (); 1366 poll_wait ();
1295 poll_cb (); 1367 poll_cb ();
1296 } 1368 }
1297 1369
1298int 1370int
1299poll() 1371poll ()
1300 PROTOTYPE:
1301 CODE: 1372 CODE:
1302 poll_wait (); 1373 poll_wait ();
1303 RETVAL = poll_cb (); 1374 RETVAL = poll_cb ();
1304 OUTPUT: 1375 OUTPUT:
1305 RETVAL 1376 RETVAL
1306 1377
1307int 1378int
1308poll_fileno() 1379poll_fileno ()
1309 PROTOTYPE:
1310 CODE: 1380 CODE:
1311 RETVAL = s_epipe_fd (&respipe); 1381 RETVAL = s_epipe_fd (&respipe);
1312 OUTPUT: 1382 OUTPUT:
1313 RETVAL 1383 RETVAL
1314 1384
1315int 1385int
1316poll_cb(...) 1386poll_cb (...)
1317 PROTOTYPE: 1387 PROTOTYPE:
1318 CODE: 1388 CODE:
1319 RETVAL = poll_cb (); 1389 RETVAL = poll_cb ();
1320 OUTPUT: 1390 OUTPUT:
1321 RETVAL 1391 RETVAL
1322 1392
1323void 1393void
1324poll_wait() 1394poll_wait ()
1325 PROTOTYPE:
1326 CODE: 1395 CODE:
1327 poll_wait (); 1396 poll_wait ();
1328 1397
1329int 1398int
1330nreqs() 1399nreqs ()
1331 PROTOTYPE:
1332 CODE: 1400 CODE:
1333 RETVAL = eio_nreqs (); 1401 RETVAL = eio_nreqs ();
1334 OUTPUT: 1402 OUTPUT:
1335 RETVAL 1403 RETVAL
1336 1404
1337int 1405int
1338nready() 1406nready ()
1339 PROTOTYPE:
1340 CODE: 1407 CODE:
1341 RETVAL = eio_nready (); 1408 RETVAL = eio_nready ();
1342 OUTPUT: 1409 OUTPUT:
1343 RETVAL 1410 RETVAL
1344 1411
1345int 1412int
1346npending() 1413npending ()
1347 PROTOTYPE:
1348 CODE: 1414 CODE:
1349 RETVAL = eio_npending (); 1415 RETVAL = eio_npending ();
1350 OUTPUT: 1416 OUTPUT:
1351 RETVAL 1417 RETVAL
1352 1418
1353int 1419int
1354nthreads() 1420nthreads ()
1355 PROTOTYPE:
1356 CODE: 1421 CODE:
1357 RETVAL = eio_nthreads (); 1422 RETVAL = eio_nthreads ();
1358 OUTPUT: 1423 OUTPUT:
1359 RETVAL 1424 RETVAL
1360 1425
1361int 1426int
1362fadvise (aio_rfd fh, off_t offset, off_t length, IV advice) 1427fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1363 PROTOTYPE: $$$$
1364 CODE: 1428 CODE:
1365#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1366 RETVAL = posix_fadvise (fh, offset, length, advice); 1429 RETVAL = posix_fadvise (fh, offset, length, advice);
1367#else
1368 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1369#endif
1370 OUTPUT: 1430 OUTPUT:
1371 RETVAL 1431 RETVAL
1372 1432
1373ssize_t 1433ssize_t
1374sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count) 1434sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1375 PROTOTYPE: $$$$
1376 CODE: 1435 CODE:
1377 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1436 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1378 OUTPUT: 1437 OUTPUT:
1379 RETVAL 1438 RETVAL
1380 1439
1381void 1440void
1382mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0) 1441mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1383 PROTOTYPE: $$$$$;$
1384 PPCODE: 1442 PPCODE:
1385 sv_unmagic (scalar, MMAP_MAGIC); 1443 sv_unmagic (scalar, MMAP_MAGIC);
1386{ 1444{
1387 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;
1388 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 1446 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1389 if (addr == (void *)-1) 1447 if (addr == (void *)-1)
1390 XSRETURN_NO; 1448 XSRETURN_NO;
1391 1449
1450 sv_force_normal (scalar);
1451
1392 /* we store the length in mg_obj, as namlen is I32 :/ */ 1452 /* we store the length in mg_obj, as namlen is I32 :/ */
1393 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0) 1453 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1394 ->mg_obj = (SV *)length; 1454 ->mg_obj = (SV *)length;
1395 1455
1396 SvUPGRADE (scalar, SVt_PV); /* nop... */ 1456 SvUPGRADE (scalar, SVt_PV); /* nop... */
1457
1397 if (!(prot & PROT_WRITE)) 1458 if (!(prot & PROT_WRITE))
1398 SvREADONLY_on (scalar); 1459 SvREADONLY_on (scalar);
1460
1461 if (SvLEN (scalar))
1462 Safefree (SvPVX (scalar));
1399 1463
1400 SvPVX (scalar) = (char *)addr; 1464 SvPVX (scalar) = (char *)addr;
1401 SvCUR_set (scalar, length); 1465 SvCUR_set (scalar, length);
1402 SvLEN_set (scalar, 0); 1466 SvLEN_set (scalar, 0);
1403 SvPOK_only (scalar); 1467 SvPOK_only (scalar);
… …
1405 XSRETURN_YES; 1469 XSRETURN_YES;
1406} 1470}
1407 1471
1408void 1472void
1409munmap (SV *scalar) 1473munmap (SV *scalar)
1410 PROTOTYPE: $
1411 CODE: 1474 CODE:
1412 sv_unmagic (scalar, MMAP_MAGIC); 1475 sv_unmagic (scalar, MMAP_MAGIC);
1413 1476
1414int 1477int
1415mlockall (int flags) 1478madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1416 PROTOTYPE: $ 1479 ALIAS:
1480 mprotect = 1
1417 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);
1418#if _POSIX_MEMLOCK 1527#if _POSIX_MEMLOCK
1419#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 1528 RETVAL = munlock (addr, len);
1420 extern int mallopt (int, int);
1421 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1422#endif
1423 mlockall (flags);
1424#else 1529#else
1425 RETVAL = -1; 1530 RETVAL = ((errno = ENOSYS), -1);
1426 errno = ENOSYS;
1427#endif 1531#endif
1532}
1428 OUTPUT: 1533 OUTPUT:
1429 RETVAL 1534 RETVAL
1430 1535
1431int 1536int
1432munlockall () 1537munlockall ()
1433 PROTOTYPE:
1434 CODE: 1538 CODE:
1435#if _POSIX_MEMLOCK 1539#if _POSIX_MEMLOCK
1436 munlockall (); 1540 munlockall ();
1437#else 1541#else
1438 RETVAL = -1; 1542 RETVAL = -1;

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