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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.167 by root, Sun May 9 20:49:52 2010 UTC vs.
Revision 1.177 by root, Thu Dec 30 07:19:31 2010 UTC

… …
118 STRLEN stroffset; \ 118 STRLEN stroffset; \
119 SV *self; 119 SV *self;
120 120
121#define EIO_NO_WRAPPERS 1 121#define EIO_NO_WRAPPERS 1
122 122
123#include "libeio/config.h"
123#include "libeio/eio.h" 124#include "libeio/eio.h"
124 125
125#ifndef POSIX_FADV_NORMAL 126#ifndef POSIX_FADV_NORMAL
126# define POSIX_FADV_NORMAL 0 127# define POSIX_FADV_NORMAL 0
127# define NO_FADVISE 1
128#endif 128#endif
129#ifndef POSIX_FADV_SEQUENTIAL 129#ifndef POSIX_FADV_SEQUENTIAL
130# define POSIX_FADV_SEQUENTIAL 0 130# define POSIX_FADV_SEQUENTIAL 0
131#endif 131#endif
132#ifndef POSIX_FADV_RANDOM 132#ifndef POSIX_FADV_RANDOM
… …
140#endif 140#endif
141#ifndef POSIX_FADV_DONTNEED 141#ifndef POSIX_FADV_DONTNEED
142# define POSIX_FADV_DONTNEED 0 142# define POSIX_FADV_DONTNEED 0
143#endif 143#endif
144 144
145#if !HAVE_POSIX_FADVISE
146# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
147#endif
148
149#ifndef POSIX_MADV_NORMAL
150# define POSIX_MADV_NORMAL 0
151#endif
152#ifndef POSIX_MADV_SEQUENTIAL
153# define POSIX_MADV_SEQUENTIAL 0
154#endif
155#ifndef POSIX_MADV_RANDOM
156# define POSIX_MADV_RANDOM 0
157#endif
158#ifndef POSIX_MADV_WILLNEED
159# define POSIX_MADV_WILLNEED 0
160#endif
161#ifndef POSIX_MADV_DONTNEED
162# define POSIX_MADV_DONTNEED 0
163#endif
164
165#if !HAVE_POSIX_MADVISE
166# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
167#endif
168
169#ifndef PROT_NONE
170# define PROT_NONE 0
171#endif
172#ifndef PROT_READ
173# define PROT_READ 0
174#endif
175#ifndef PROT_WRITE
176# define PROT_READ 0
177#endif
178#ifndef PROT_EXEC
179# define PROT_EXEC 0
180#endif
181
145#ifndef ST_NODEV 182#ifndef ST_NODEV
146# define ST_NODEV 0 183# define ST_NODEV 0
147#endif 184#endif
148#ifndef ST_NOEXEC 185#ifndef ST_NOEXEC
149# define ST_NOEXEC 0 186# define ST_NOEXEC 0
… …
169#ifndef ST_NODIRATIME 206#ifndef ST_NODIRATIME
170# define ST_NODIRATIME 0 207# define ST_NODIRATIME 0
171#endif 208#endif
172#ifndef ST_RELATIME 209#ifndef ST_RELATIME
173# define ST_RELATIME 0 210# 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 211#endif
182 212
183#ifndef MAP_ANONYMOUS 213#ifndef MAP_ANONYMOUS
184# ifdef MAP_ANON 214# ifdef MAP_ANON
185# define MAP_ANONYMOUS MAP_ANON 215# define MAP_ANONYMOUS MAP_ANON
… …
323 /* do not recreate the result IV from scratch each time */ 353 /* do not recreate the result IV from scratch each time */
324 if (expect_true (sv_result_cache)) 354 if (expect_true (sv_result_cache))
325 { 355 {
326 sv_result = sv_result_cache; sv_result_cache = 0; 356 sv_result = sv_result_cache; sv_result_cache = 0;
327 SvIV_set (sv_result, req->result); 357 SvIV_set (sv_result, req->result);
358 SvIOK_only (sv_result);
328 } 359 }
329 else 360 else
330 { 361 {
331 sv_result = newSViv (req->result); 362 sv_result = newSViv (req->result);
332 SvREADONLY_on (sv_result); 363 SvREADONLY_on (sv_result);
… …
496 SvSETMAGIC (req->sv2); 527 SvSETMAGIC (req->sv2);
497 PUSHs (sv_result); 528 PUSHs (sv_result);
498 } 529 }
499 break; 530 break;
500 531
501 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */ 532 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502 if (req->result > 0) 533 if (req->result > 0)
503 SvIV_set (sv_result, 0); 534 SvIV_set (sv_result, 0);
504 /* FALLTHROUGH */ 535 /* FALLTHROUGH */
505 536
506 default: 537 default:
… …
606/*****************************************************************************/ 637/*****************************************************************************/
607 638
608#if !_POSIX_MAPPED_FILES 639#if !_POSIX_MAPPED_FILES
609# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1) 640# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
610# define munmap(addr,length) (errno = ENOSYS, -1) 641# define munmap(addr,length) (errno = ENOSYS, -1)
642# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
643# define PROT_NONE 0
644# define PROT_WRITE 0
645# define MAP_PRIVATE 0
646# define MAP_SHARED 0
647# define MAP_FIXED 0
611#endif 648#endif
612 649
613#define MMAP_MAGIC PERL_MAGIC_ext 650#define MMAP_MAGIC PERL_MAGIC_ext
614 651
615static int 652static int
… …
620 errno = old_errno; 657 errno = old_errno;
621 658
622 mg->mg_obj = 0; /* just in case */ 659 mg->mg_obj = 0; /* just in case */
623 660
624 SvREADONLY_off (sv); 661 SvREADONLY_off (sv);
662
663 if (SvPVX (sv) != mg->mg_ptr)
664 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
665
625 SvCUR_set (sv, 0); 666 SvCUR_set (sv, 0);
626 SvLEN_set (sv, 0);
627 SvPVX (sv) = 0; 667 SvPVX (sv) = 0;
628 SvOK_off (sv); 668 SvOK_off (sv);
629 669
630 return 0; 670 return 0;
631} 671}
… …
696 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM) 736 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
697 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 737 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
698 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 738 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
699 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 739 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
700 740
741 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
742 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
743 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
744 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
745 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
746
701 const_iv (ST_RDONLY) 747 const_iv (ST_RDONLY)
702 const_iv (ST_NOSUID) 748 const_iv (ST_NOSUID)
703 const_iv (ST_NODEV) 749 const_iv (ST_NODEV)
704 const_iv (ST_NOEXEC) 750 const_iv (ST_NOEXEC)
705 const_iv (ST_SYNCHRONOUS) 751 const_iv (ST_SYNCHRONOUS)
… …
709 const_iv (ST_IMMUTABLE) 755 const_iv (ST_IMMUTABLE)
710 const_iv (ST_NOATIME) 756 const_iv (ST_NOATIME)
711 const_iv (ST_NODIRATIME) 757 const_iv (ST_NODIRATIME)
712 const_iv (ST_RELATIME) 758 const_iv (ST_RELATIME)
713 759
760 const_iv (PROT_NONE)
714 const_iv (PROT_EXEC) 761 const_iv (PROT_EXEC)
715 const_iv (PROT_NONE)
716 const_iv (PROT_READ) 762 const_iv (PROT_READ)
717 const_iv (PROT_WRITE) 763 const_iv (PROT_WRITE)
718 764
719 /*const_iv (MAP_FIXED)*/ 765 /*const_iv (MAP_FIXED)*/
720 const_iv (MAP_PRIVATE) 766 const_iv (MAP_PRIVATE)
… …
726 const_iv (MAP_LOCKED) 772 const_iv (MAP_LOCKED)
727 const_iv (MAP_NORESERVE) 773 const_iv (MAP_NORESERVE)
728 const_iv (MAP_POPULATE) 774 const_iv (MAP_POPULATE)
729 const_iv (MAP_NONBLOCK) 775 const_iv (MAP_NONBLOCK)
730 776
731 const_iv (MCL_FUTURE) 777 const_eio (MCL_FUTURE)
732 const_iv (MCL_CURRENT) 778 const_eio (MCL_CURRENT)
733 779
734 const_eio (MS_ASYNC) 780 const_eio (MS_ASYNC)
735 const_eio (MS_INVALIDATE) 781 const_eio (MS_INVALIDATE)
736 const_eio (MS_SYNC) 782 const_eio (MS_SYNC)
737 783
… …
811 CODE: 857 CODE:
812 max_outstanding = maxreqs; 858 max_outstanding = maxreqs;
813 859
814void 860void
815aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 861aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
816 PROTOTYPE: $$$;$
817 PPCODE: 862 PPCODE:
818{ 863{
819 dREQ; 864 dREQ;
820 865
821 req->type = EIO_OPEN; 866 req->type = EIO_OPEN;
… …
827 REQ_SEND; 872 REQ_SEND;
828} 873}
829 874
830void 875void
831aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 876aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
832 PROTOTYPE: $;$
833 ALIAS: 877 ALIAS:
834 aio_fsync = EIO_FSYNC 878 aio_fsync = EIO_FSYNC
835 aio_fdatasync = EIO_FDATASYNC 879 aio_fdatasync = EIO_FDATASYNC
836 PPCODE: 880 PPCODE:
837{ 881{
… …
845 REQ_SEND (req); 889 REQ_SEND (req);
846} 890}
847 891
848void 892void
849aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) 893aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
850 PROTOTYPE: $$$$;$
851 PPCODE: 894 PPCODE:
852{ 895{
853 int fd = s_fileno_croak (fh, 0); 896 int fd = s_fileno_croak (fh, 0);
854 dREQ; 897 dREQ;
855 898
… …
863 REQ_SEND (req); 906 REQ_SEND (req);
864} 907}
865 908
866void 909void
867aio_close (SV *fh, SV *callback=&PL_sv_undef) 910aio_close (SV *fh, SV *callback=&PL_sv_undef)
868 PROTOTYPE: $;$
869 PPCODE: 911 PPCODE:
870{ 912{
871 static int close_pipe = -1; /* dummy fd to close fds via dup2 */ 913 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
872 int fd = s_fileno_croak (fh, 0); 914 int fd = s_fileno_croak (fh, 0);
873 dREQ; 915 dREQ;
… …
895void 937void
896aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 938aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
897 ALIAS: 939 ALIAS:
898 aio_read = EIO_READ 940 aio_read = EIO_READ
899 aio_write = EIO_WRITE 941 aio_write = EIO_WRITE
900 PROTOTYPE: $$$$$;$
901 PPCODE: 942 PPCODE:
902{ 943{
903 STRLEN svlen; 944 STRLEN svlen;
904 int fd = s_fileno_croak (fh, ix == EIO_WRITE); 945 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
905 char *svptr = SvPVbyte (data, svlen); 946 char *svptr = SvPVbyte (data, svlen);
… …
946 } 987 }
947} 988}
948 989
949void 990void
950aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 991aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
951 PROTOTYPE: $$;$
952 PPCODE: 992 PPCODE:
953{ 993{
954 SV *data; 994 SV *data;
955 dREQ; 995 dREQ;
956 996
… …
961 REQ_SEND; 1001 REQ_SEND;
962} 1002}
963 1003
964void 1004void
965aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef) 1005aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
966 PROTOTYPE: $$$$;$
967 PPCODE: 1006 PPCODE:
968{ 1007{
969 int ifd = s_fileno_croak (in_fh , 0); 1008 int ifd = s_fileno_croak (in_fh , 0);
970 int ofd = s_fileno_croak (out_fh, 1); 1009 int ofd = s_fileno_croak (out_fh, 1);
971 dREQ; 1010 dREQ;
… …
981 REQ_SEND; 1020 REQ_SEND;
982} 1021}
983 1022
984void 1023void
985aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) 1024aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
986 PROTOTYPE: $$$;$
987 PPCODE: 1025 PPCODE:
988{ 1026{
989 int fd = s_fileno_croak (fh, 0); 1027 int fd = s_fileno_croak (fh, 0);
990 dREQ; 1028 dREQ;
991 1029
… …
1192void 1230void
1193aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef) 1231aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1194 ALIAS: 1232 ALIAS:
1195 aio_mtouch = EIO_MTOUCH 1233 aio_mtouch = EIO_MTOUCH
1196 aio_msync = EIO_MSYNC 1234 aio_msync = EIO_MSYNC
1197 PROTOTYPE: $$$$;$
1198 PPCODE: 1235 PPCODE:
1199{ 1236{
1200 STRLEN svlen; 1237 STRLEN svlen;
1238 char *svptr = SvPVbyte (data, svlen);
1201 UV len = SvUV (length); 1239 UV len = SvUV (length);
1202 char *svptr = SvPVbyte (data, svlen);
1203 1240
1204 if (offset < 0) 1241 if (offset < 0)
1205 offset += svlen; 1242 offset += svlen;
1206 1243
1207 if (offset < 0 || offset > svlen) 1244 if (offset < 0 || offset > svlen)
… …
1212 1249
1213 { 1250 {
1214 dREQ; 1251 dREQ;
1215 1252
1216 req->type = ix; 1253 req->type = ix;
1217 req->size = len;
1218 req->sv2 = SvREFCNT_inc (data); 1254 req->sv2 = SvREFCNT_inc (data);
1219 req->ptr2 = (char *)svptr + offset; 1255 req->ptr2 = (char *)svptr + offset;
1256 req->size = len;
1220 req->int1 = flags; 1257 req->int1 = flags;
1221 1258
1222 REQ_SEND; 1259 REQ_SEND;
1223 } 1260 }
1224} 1261}
1225 1262
1226void 1263void
1264aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1265 PPCODE:
1266{
1267 STRLEN svlen;
1268 char *svptr = SvPVbyte (data, svlen);
1269 UV len = SvUV (length);
1270
1271 if (offset < 0)
1272 offset += svlen;
1273
1274 if (offset < 0 || offset > svlen)
1275 croak ("offset outside of scalar");
1276
1277 if (!SvOK (length) || len + offset > svlen)
1278 len = svlen - offset;
1279
1280 {
1281 dREQ;
1282
1283 req->type = EIO_MLOCK;
1284 req->sv2 = SvREFCNT_inc (data);
1285 req->ptr2 = (char *)svptr + offset;
1286 req->size = len;
1287
1288 REQ_SEND;
1289 }
1290}
1291
1292void
1293aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1294 PPCODE:
1295{
1296 dREQ;
1297
1298 req->type = EIO_MLOCKALL;
1299 req->int1 = flags;
1300
1301 REQ_SEND;
1302}
1303
1304void
1227aio_busy (double delay, SV *callback=&PL_sv_undef) 1305aio_busy (double delay, SV *callback=&PL_sv_undef)
1228 PPCODE: 1306 PPCODE:
1229{ 1307{
1230 dREQ; 1308 dREQ;
1231 1309
… …
1235 REQ_SEND; 1313 REQ_SEND;
1236} 1314}
1237 1315
1238void 1316void
1239aio_group (SV *callback=&PL_sv_undef) 1317aio_group (SV *callback=&PL_sv_undef)
1240 PROTOTYPE: ;$
1241 PPCODE: 1318 PPCODE:
1242{ 1319{
1243 dREQ; 1320 dREQ;
1244 1321
1245 req->type = EIO_GROUP; 1322 req->type = EIO_GROUP;
… …
1262 REQ_SEND; 1339 REQ_SEND;
1263} 1340}
1264 1341
1265int 1342int
1266aioreq_pri (int pri = 0) 1343aioreq_pri (int pri = 0)
1267 PROTOTYPE: ;$
1268 CODE: 1344 CODE:
1269 RETVAL = next_pri; 1345 RETVAL = next_pri;
1270 if (items > 0) 1346 if (items > 0)
1271 { 1347 {
1272 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN; 1348 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
… …
1284 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX; 1360 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1285 next_pri = nice; 1361 next_pri = nice;
1286 1362
1287void 1363void
1288flush () 1364flush ()
1289 PROTOTYPE:
1290 CODE: 1365 CODE:
1291 while (eio_nreqs ()) 1366 while (eio_nreqs ())
1292 { 1367 {
1293 poll_wait (); 1368 poll_wait ();
1294 poll_cb (); 1369 poll_cb ();
1295 } 1370 }
1296 1371
1297int 1372int
1298poll() 1373poll ()
1299 PROTOTYPE:
1300 CODE: 1374 CODE:
1301 poll_wait (); 1375 poll_wait ();
1302 RETVAL = poll_cb (); 1376 RETVAL = poll_cb ();
1303 OUTPUT: 1377 OUTPUT:
1304 RETVAL 1378 RETVAL
1305 1379
1306int 1380int
1307poll_fileno() 1381poll_fileno ()
1308 PROTOTYPE:
1309 CODE: 1382 CODE:
1310 RETVAL = s_epipe_fd (&respipe); 1383 RETVAL = s_epipe_fd (&respipe);
1311 OUTPUT: 1384 OUTPUT:
1312 RETVAL 1385 RETVAL
1313 1386
1314int 1387int
1315poll_cb(...) 1388poll_cb (...)
1316 PROTOTYPE: 1389 PROTOTYPE:
1317 CODE: 1390 CODE:
1318 RETVAL = poll_cb (); 1391 RETVAL = poll_cb ();
1319 OUTPUT: 1392 OUTPUT:
1320 RETVAL 1393 RETVAL
1321 1394
1322void 1395void
1323poll_wait() 1396poll_wait ()
1324 PROTOTYPE:
1325 CODE: 1397 CODE:
1326 poll_wait (); 1398 poll_wait ();
1327 1399
1328int 1400int
1329nreqs() 1401nreqs ()
1330 PROTOTYPE:
1331 CODE: 1402 CODE:
1332 RETVAL = eio_nreqs (); 1403 RETVAL = eio_nreqs ();
1333 OUTPUT: 1404 OUTPUT:
1334 RETVAL 1405 RETVAL
1335 1406
1336int 1407int
1337nready() 1408nready ()
1338 PROTOTYPE:
1339 CODE: 1409 CODE:
1340 RETVAL = eio_nready (); 1410 RETVAL = eio_nready ();
1341 OUTPUT: 1411 OUTPUT:
1342 RETVAL 1412 RETVAL
1343 1413
1344int 1414int
1345npending() 1415npending ()
1346 PROTOTYPE:
1347 CODE: 1416 CODE:
1348 RETVAL = eio_npending (); 1417 RETVAL = eio_npending ();
1349 OUTPUT: 1418 OUTPUT:
1350 RETVAL 1419 RETVAL
1351 1420
1352int 1421int
1353nthreads() 1422nthreads ()
1354 PROTOTYPE:
1355 CODE: 1423 CODE:
1356 RETVAL = eio_nthreads (); 1424 RETVAL = eio_nthreads ();
1357 OUTPUT: 1425 OUTPUT:
1358 RETVAL 1426 RETVAL
1359 1427
1360int 1428int
1361fadvise (aio_rfd fh, off_t offset, off_t length, IV advice) 1429fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1362 PROTOTYPE: $$$$
1363 CODE: 1430 CODE:
1364#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1365 RETVAL = posix_fadvise (fh, offset, length, advice); 1431 RETVAL = posix_fadvise (fh, offset, length, advice);
1366#else
1367 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1368#endif
1369 OUTPUT: 1432 OUTPUT:
1370 RETVAL 1433 RETVAL
1371 1434
1372ssize_t 1435ssize_t
1373sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count) 1436sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1374 PROTOTYPE: $$$$
1375 CODE: 1437 CODE:
1376 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1438 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1377 OUTPUT: 1439 OUTPUT:
1378 RETVAL 1440 RETVAL
1379 1441
1380void 1442void
1381mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0) 1443mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1382 PROTOTYPE: $$$$$;$
1383 PPCODE: 1444 PPCODE:
1384 sv_unmagic (scalar, MMAP_MAGIC); 1445 sv_unmagic (scalar, MMAP_MAGIC);
1385{ 1446{
1386 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1; 1447 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1387 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 1448 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1388 if (addr == (void *)-1) 1449 if (addr == (void *)-1)
1389 XSRETURN_NO; 1450 XSRETURN_NO;
1390 1451
1452 sv_force_normal (scalar);
1453
1391 /* we store the length in mg_obj, as namlen is I32 :/ */ 1454 /* we store the length in mg_obj, as namlen is I32 :/ */
1392 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0) 1455 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1393 ->mg_obj = (SV *)length; 1456 ->mg_obj = (SV *)length;
1394 1457
1395 SvUPGRADE (scalar, SVt_PV); /* nop... */ 1458 SvUPGRADE (scalar, SVt_PV); /* nop... */
1459
1396 if (!(prot & PROT_WRITE)) 1460 if (!(prot & PROT_WRITE))
1397 SvREADONLY_on (scalar); 1461 SvREADONLY_on (scalar);
1462
1463 if (SvLEN (scalar))
1464 Safefree (SvPVX (scalar));
1398 1465
1399 SvPVX (scalar) = (char *)addr; 1466 SvPVX (scalar) = (char *)addr;
1400 SvCUR_set (scalar, length); 1467 SvCUR_set (scalar, length);
1401 SvLEN_set (scalar, 0); 1468 SvLEN_set (scalar, 0);
1402 SvPOK_only (scalar); 1469 SvPOK_only (scalar);
… …
1404 XSRETURN_YES; 1471 XSRETURN_YES;
1405} 1472}
1406 1473
1407void 1474void
1408munmap (SV *scalar) 1475munmap (SV *scalar)
1409 PROTOTYPE: $
1410 CODE: 1476 CODE:
1411 sv_unmagic (scalar, MMAP_MAGIC); 1477 sv_unmagic (scalar, MMAP_MAGIC);
1412 1478
1413int 1479int
1414mlockall (int flags) 1480madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1415 PROTOTYPE: $ 1481 ALIAS:
1482 mprotect = 1
1416 CODE: 1483 CODE:
1484{
1485 STRLEN svlen;
1486 void *addr = SvPVbyte (scalar, svlen);
1487 size_t len = SvUV (length);
1488
1489 if (offset < 0)
1490 offset += svlen;
1491
1492 if (offset < 0 || offset > svlen)
1493 croak ("offset outside of scalar");
1494
1495 if (!SvOK (length) || len + offset > svlen)
1496 len = svlen - offset;
1497
1498 addr = (void *)(((intptr_t)addr) + offset);
1499 eio_page_align (&addr, &len);
1500
1501 switch (ix)
1502 {
1503 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1504 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1505 }
1506}
1507 OUTPUT:
1508 RETVAL
1509
1510int
1511munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1512 CODE:
1513{
1514 STRLEN svlen;
1515 void *addr = SvPVbyte (scalar, svlen);
1516 size_t len = SvUV (length);
1517
1518 if (offset < 0)
1519 offset += svlen;
1520
1521 if (offset < 0 || offset > svlen)
1522 croak ("offset outside of scalar");
1523
1524 if (!SvOK (length) || len + offset > svlen)
1525 len = svlen - offset;
1526
1527 addr = (void *)(((intptr_t)addr) + offset);
1528 eio_page_align (&addr, &len);
1417#if _POSIX_MEMLOCK 1529#if _POSIX_MEMLOCK
1418#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 1530 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 1531#else
1424 RETVAL = -1; 1532 RETVAL = ((errno = ENOSYS), -1);
1425 errno = ENOSYS;
1426#endif 1533#endif
1534}
1427 OUTPUT: 1535 OUTPUT:
1428 RETVAL 1536 RETVAL
1429 1537
1430int 1538int
1431munlockall () 1539munlockall ()
1432 PROTOTYPE:
1433 CODE: 1540 CODE:
1434#if _POSIX_MEMLOCK 1541#if _POSIX_MEMLOCK
1435 munlockall (); 1542 munlockall ();
1436#else 1543#else
1437 RETVAL = -1; 1544 RETVAL = -1;

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