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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 1.177 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
… …
304 } 334 }
305} 335}
306 336
307static int req_invoke (eio_req *req) 337static int req_invoke (eio_req *req)
308{ 338{
309 dSP;
310
311 if (req->flags & FLAG_SV2_RO_OFF) 339 if (req->flags & FLAG_SV2_RO_OFF)
312 SvREADONLY_off (req->sv2); 340 SvREADONLY_off (req->sv2);
313 341
314 if (!EIO_CANCELLED (req) && req->callback) 342 if (!EIO_CANCELLED (req) && req->callback)
315 { 343 {
344 dSP;
316 static SV *sv_result_cache; /* caches the result integer SV */ 345 static SV *sv_result_cache; /* caches the result integer SV */
317 SV *sv_result; 346 SV *sv_result;
318 347
319 ENTER; 348 ENTER;
320 SAVETMPS; 349 SAVETMPS;
… …
324 /* do not recreate the result IV from scratch each time */ 353 /* do not recreate the result IV from scratch each time */
325 if (expect_true (sv_result_cache)) 354 if (expect_true (sv_result_cache))
326 { 355 {
327 sv_result = sv_result_cache; sv_result_cache = 0; 356 sv_result = sv_result_cache; sv_result_cache = 0;
328 SvIV_set (sv_result, req->result); 357 SvIV_set (sv_result, req->result);
358 SvIOK_only (sv_result);
329 } 359 }
330 else 360 else
331 { 361 {
332 sv_result = newSViv (req->result); 362 sv_result = newSViv (req->result);
333 SvREADONLY_on (sv_result); 363 SvREADONLY_on (sv_result);
… …
497 SvSETMAGIC (req->sv2); 527 SvSETMAGIC (req->sv2);
498 PUSHs (sv_result); 528 PUSHs (sv_result);
499 } 529 }
500 break; 530 break;
501 531
502 case EIO_DUP2: 532 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
503 if (req->result > 0) 533 if (req->result > 0)
504 SvIV_set (sv_result, 0); 534 SvIV_set (sv_result, 0);
505 /* FALLTHROUGH */ 535 /* FALLTHROUGH */
506 536
507 default: 537 default:
… …
607/*****************************************************************************/ 637/*****************************************************************************/
608 638
609#if !_POSIX_MAPPED_FILES 639#if !_POSIX_MAPPED_FILES
610# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1) 640# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
611# 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
612#endif 648#endif
613 649
614#define MMAP_MAGIC PERL_MAGIC_ext 650#define MMAP_MAGIC PERL_MAGIC_ext
615 651
616static int 652static int
… …
621 errno = old_errno; 657 errno = old_errno;
622 658
623 mg->mg_obj = 0; /* just in case */ 659 mg->mg_obj = 0; /* just in case */
624 660
625 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
626 SvCUR_set (sv, 0); 666 SvCUR_set (sv, 0);
627 SvLEN_set (sv, 0);
628 SvPVX (sv) = 0; 667 SvPVX (sv) = 0;
629 SvOK_off (sv); 668 SvOK_off (sv);
630 669
631 return 0; 670 return 0;
632} 671}
… …
697 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM) 736 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
698 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 737 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
699 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 738 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
700 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 739 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
701 740
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
702 const_iv (ST_RDONLY) 747 const_iv (ST_RDONLY)
703 const_iv (ST_NOSUID) 748 const_iv (ST_NOSUID)
704 const_iv (ST_NODEV) 749 const_iv (ST_NODEV)
705 const_iv (ST_NOEXEC) 750 const_iv (ST_NOEXEC)
706 const_iv (ST_SYNCHRONOUS) 751 const_iv (ST_SYNCHRONOUS)
… …
710 const_iv (ST_IMMUTABLE) 755 const_iv (ST_IMMUTABLE)
711 const_iv (ST_NOATIME) 756 const_iv (ST_NOATIME)
712 const_iv (ST_NODIRATIME) 757 const_iv (ST_NODIRATIME)
713 const_iv (ST_RELATIME) 758 const_iv (ST_RELATIME)
714 759
760 const_iv (PROT_NONE)
715 const_iv (PROT_EXEC) 761 const_iv (PROT_EXEC)
716 const_iv (PROT_NONE)
717 const_iv (PROT_READ) 762 const_iv (PROT_READ)
718 const_iv (PROT_WRITE) 763 const_iv (PROT_WRITE)
719 764
720 /*const_iv (MAP_FIXED)*/ 765 /*const_iv (MAP_FIXED)*/
721 const_iv (MAP_PRIVATE) 766 const_iv (MAP_PRIVATE)
… …
727 const_iv (MAP_LOCKED) 772 const_iv (MAP_LOCKED)
728 const_iv (MAP_NORESERVE) 773 const_iv (MAP_NORESERVE)
729 const_iv (MAP_POPULATE) 774 const_iv (MAP_POPULATE)
730 const_iv (MAP_NONBLOCK) 775 const_iv (MAP_NONBLOCK)
731 776
732 const_iv (MCL_FUTURE) 777 const_eio (MCL_FUTURE)
733 const_iv (MCL_CURRENT) 778 const_eio (MCL_CURRENT)
734 779
735 const_eio (MS_ASYNC) 780 const_eio (MS_ASYNC)
736 const_eio (MS_INVALIDATE) 781 const_eio (MS_INVALIDATE)
737 const_eio (MS_SYNC) 782 const_eio (MS_SYNC)
738 783
… …
812 CODE: 857 CODE:
813 max_outstanding = maxreqs; 858 max_outstanding = maxreqs;
814 859
815void 860void
816aio_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)
817 PROTOTYPE: $$$;$
818 PPCODE: 862 PPCODE:
819{ 863{
820 dREQ; 864 dREQ;
821 865
822 req->type = EIO_OPEN; 866 req->type = EIO_OPEN;
… …
828 REQ_SEND; 872 REQ_SEND;
829} 873}
830 874
831void 875void
832aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 876aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
833 PROTOTYPE: $;$
834 ALIAS: 877 ALIAS:
835 aio_fsync = EIO_FSYNC 878 aio_fsync = EIO_FSYNC
836 aio_fdatasync = EIO_FDATASYNC 879 aio_fdatasync = EIO_FDATASYNC
837 PPCODE: 880 PPCODE:
838{ 881{
… …
846 REQ_SEND (req); 889 REQ_SEND (req);
847} 890}
848 891
849void 892void
850aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) 893aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
851 PROTOTYPE: $$$$;$
852 PPCODE: 894 PPCODE:
853{ 895{
854 int fd = s_fileno_croak (fh, 0); 896 int fd = s_fileno_croak (fh, 0);
855 dREQ; 897 dREQ;
856 898
… …
864 REQ_SEND (req); 906 REQ_SEND (req);
865} 907}
866 908
867void 909void
868aio_close (SV *fh, SV *callback=&PL_sv_undef) 910aio_close (SV *fh, SV *callback=&PL_sv_undef)
869 PROTOTYPE: $;$
870 PPCODE: 911 PPCODE:
871{ 912{
872 static int close_pipe = -1; /* dummy fd to close fds via dup2 */ 913 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
873 int fd = s_fileno_croak (fh, 0); 914 int fd = s_fileno_croak (fh, 0);
874 dREQ; 915 dREQ;
… …
896void 937void
897aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 938aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
898 ALIAS: 939 ALIAS:
899 aio_read = EIO_READ 940 aio_read = EIO_READ
900 aio_write = EIO_WRITE 941 aio_write = EIO_WRITE
901 PROTOTYPE: $$$$$;$
902 PPCODE: 942 PPCODE:
903{ 943{
904 STRLEN svlen; 944 STRLEN svlen;
905 int fd = s_fileno_croak (fh, ix == EIO_WRITE); 945 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
906 char *svptr = SvPVbyte (data, svlen); 946 char *svptr = SvPVbyte (data, svlen);
… …
947 } 987 }
948} 988}
949 989
950void 990void
951aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 991aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
952 PROTOTYPE: $$;$
953 PPCODE: 992 PPCODE:
954{ 993{
955 SV *data; 994 SV *data;
956 dREQ; 995 dREQ;
957 996
… …
962 REQ_SEND; 1001 REQ_SEND;
963} 1002}
964 1003
965void 1004void
966aio_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)
967 PROTOTYPE: $$$$;$
968 PPCODE: 1006 PPCODE:
969{ 1007{
970 int ifd = s_fileno_croak (in_fh , 0); 1008 int ifd = s_fileno_croak (in_fh , 0);
971 int ofd = s_fileno_croak (out_fh, 1); 1009 int ofd = s_fileno_croak (out_fh, 1);
972 dREQ; 1010 dREQ;
… …
982 REQ_SEND; 1020 REQ_SEND;
983} 1021}
984 1022
985void 1023void
986aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) 1024aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
987 PROTOTYPE: $$$;$
988 PPCODE: 1025 PPCODE:
989{ 1026{
990 int fd = s_fileno_croak (fh, 0); 1027 int fd = s_fileno_croak (fh, 0);
991 dREQ; 1028 dREQ;
992 1029
… …
1193void 1230void
1194aio_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)
1195 ALIAS: 1232 ALIAS:
1196 aio_mtouch = EIO_MTOUCH 1233 aio_mtouch = EIO_MTOUCH
1197 aio_msync = EIO_MSYNC 1234 aio_msync = EIO_MSYNC
1198 PROTOTYPE: $$$$;$
1199 PPCODE: 1235 PPCODE:
1200{ 1236{
1201 STRLEN svlen; 1237 STRLEN svlen;
1238 char *svptr = SvPVbyte (data, svlen);
1202 UV len = SvUV (length); 1239 UV len = SvUV (length);
1203 char *svptr = SvPVbyte (data, svlen);
1204 1240
1205 if (offset < 0) 1241 if (offset < 0)
1206 offset += svlen; 1242 offset += svlen;
1207 1243
1208 if (offset < 0 || offset > svlen) 1244 if (offset < 0 || offset > svlen)
… …
1213 1249
1214 { 1250 {
1215 dREQ; 1251 dREQ;
1216 1252
1217 req->type = ix; 1253 req->type = ix;
1218 req->size = len;
1219 req->sv2 = SvREFCNT_inc (data); 1254 req->sv2 = SvREFCNT_inc (data);
1220 req->ptr2 = (char *)svptr + offset; 1255 req->ptr2 = (char *)svptr + offset;
1256 req->size = len;
1221 req->int1 = flags; 1257 req->int1 = flags;
1222 1258
1223 REQ_SEND; 1259 REQ_SEND;
1224 } 1260 }
1225} 1261}
1226 1262
1227void 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
1228aio_busy (double delay, SV *callback=&PL_sv_undef) 1305aio_busy (double delay, SV *callback=&PL_sv_undef)
1229 PPCODE: 1306 PPCODE:
1230{ 1307{
1231 dREQ; 1308 dREQ;
1232 1309
… …
1236 REQ_SEND; 1313 REQ_SEND;
1237} 1314}
1238 1315
1239void 1316void
1240aio_group (SV *callback=&PL_sv_undef) 1317aio_group (SV *callback=&PL_sv_undef)
1241 PROTOTYPE: ;$
1242 PPCODE: 1318 PPCODE:
1243{ 1319{
1244 dREQ; 1320 dREQ;
1245 1321
1246 req->type = EIO_GROUP; 1322 req->type = EIO_GROUP;
… …
1263 REQ_SEND; 1339 REQ_SEND;
1264} 1340}
1265 1341
1266int 1342int
1267aioreq_pri (int pri = 0) 1343aioreq_pri (int pri = 0)
1268 PROTOTYPE: ;$
1269 CODE: 1344 CODE:
1270 RETVAL = next_pri; 1345 RETVAL = next_pri;
1271 if (items > 0) 1346 if (items > 0)
1272 { 1347 {
1273 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN; 1348 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
… …
1285 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX; 1360 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1286 next_pri = nice; 1361 next_pri = nice;
1287 1362
1288void 1363void
1289flush () 1364flush ()
1290 PROTOTYPE:
1291 CODE: 1365 CODE:
1292 while (eio_nreqs ()) 1366 while (eio_nreqs ())
1293 { 1367 {
1294 poll_wait (); 1368 poll_wait ();
1295 poll_cb (); 1369 poll_cb ();
1296 } 1370 }
1297 1371
1298int 1372int
1299poll() 1373poll ()
1300 PROTOTYPE:
1301 CODE: 1374 CODE:
1302 poll_wait (); 1375 poll_wait ();
1303 RETVAL = poll_cb (); 1376 RETVAL = poll_cb ();
1304 OUTPUT: 1377 OUTPUT:
1305 RETVAL 1378 RETVAL
1306 1379
1307int 1380int
1308poll_fileno() 1381poll_fileno ()
1309 PROTOTYPE:
1310 CODE: 1382 CODE:
1311 RETVAL = s_epipe_fd (&respipe); 1383 RETVAL = s_epipe_fd (&respipe);
1312 OUTPUT: 1384 OUTPUT:
1313 RETVAL 1385 RETVAL
1314 1386
1315int 1387int
1316poll_cb(...) 1388poll_cb (...)
1317 PROTOTYPE: 1389 PROTOTYPE:
1318 CODE: 1390 CODE:
1319 RETVAL = poll_cb (); 1391 RETVAL = poll_cb ();
1320 OUTPUT: 1392 OUTPUT:
1321 RETVAL 1393 RETVAL
1322 1394
1323void 1395void
1324poll_wait() 1396poll_wait ()
1325 PROTOTYPE:
1326 CODE: 1397 CODE:
1327 poll_wait (); 1398 poll_wait ();
1328 1399
1329int 1400int
1330nreqs() 1401nreqs ()
1331 PROTOTYPE:
1332 CODE: 1402 CODE:
1333 RETVAL = eio_nreqs (); 1403 RETVAL = eio_nreqs ();
1334 OUTPUT: 1404 OUTPUT:
1335 RETVAL 1405 RETVAL
1336 1406
1337int 1407int
1338nready() 1408nready ()
1339 PROTOTYPE:
1340 CODE: 1409 CODE:
1341 RETVAL = eio_nready (); 1410 RETVAL = eio_nready ();
1342 OUTPUT: 1411 OUTPUT:
1343 RETVAL 1412 RETVAL
1344 1413
1345int 1414int
1346npending() 1415npending ()
1347 PROTOTYPE:
1348 CODE: 1416 CODE:
1349 RETVAL = eio_npending (); 1417 RETVAL = eio_npending ();
1350 OUTPUT: 1418 OUTPUT:
1351 RETVAL 1419 RETVAL
1352 1420
1353int 1421int
1354nthreads() 1422nthreads ()
1355 PROTOTYPE:
1356 CODE: 1423 CODE:
1357 RETVAL = eio_nthreads (); 1424 RETVAL = eio_nthreads ();
1358 OUTPUT: 1425 OUTPUT:
1359 RETVAL 1426 RETVAL
1360 1427
1361int 1428int
1362fadvise (aio_rfd fh, off_t offset, off_t length, IV advice) 1429fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1363 PROTOTYPE: $$$$
1364 CODE: 1430 CODE:
1365#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1366 RETVAL = posix_fadvise (fh, offset, length, advice); 1431 RETVAL = posix_fadvise (fh, offset, length, advice);
1367#else
1368 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1369#endif
1370 OUTPUT: 1432 OUTPUT:
1371 RETVAL 1433 RETVAL
1372 1434
1373ssize_t 1435ssize_t
1374sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count) 1436sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1375 PROTOTYPE: $$$$
1376 CODE: 1437 CODE:
1377 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1438 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1378 OUTPUT: 1439 OUTPUT:
1379 RETVAL 1440 RETVAL
1380 1441
1381void 1442void
1382mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0) 1443mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1383 PROTOTYPE: $$$$$;$
1384 PPCODE: 1444 PPCODE:
1385 sv_unmagic (scalar, MMAP_MAGIC); 1445 sv_unmagic (scalar, MMAP_MAGIC);
1386{ 1446{
1387 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;
1388 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 1448 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1389 if (addr == (void *)-1) 1449 if (addr == (void *)-1)
1390 XSRETURN_NO; 1450 XSRETURN_NO;
1391 1451
1452 sv_force_normal (scalar);
1453
1392 /* we store the length in mg_obj, as namlen is I32 :/ */ 1454 /* we store the length in mg_obj, as namlen is I32 :/ */
1393 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0) 1455 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1394 ->mg_obj = (SV *)length; 1456 ->mg_obj = (SV *)length;
1395 1457
1396 SvUPGRADE (scalar, SVt_PV); /* nop... */ 1458 SvUPGRADE (scalar, SVt_PV); /* nop... */
1459
1397 if (!(prot & PROT_WRITE)) 1460 if (!(prot & PROT_WRITE))
1398 SvREADONLY_on (scalar); 1461 SvREADONLY_on (scalar);
1462
1463 if (SvLEN (scalar))
1464 Safefree (SvPVX (scalar));
1399 1465
1400 SvPVX (scalar) = (char *)addr; 1466 SvPVX (scalar) = (char *)addr;
1401 SvCUR_set (scalar, length); 1467 SvCUR_set (scalar, length);
1402 SvLEN_set (scalar, 0); 1468 SvLEN_set (scalar, 0);
1403 SvPOK_only (scalar); 1469 SvPOK_only (scalar);
… …
1405 XSRETURN_YES; 1471 XSRETURN_YES;
1406} 1472}
1407 1473
1408void 1474void
1409munmap (SV *scalar) 1475munmap (SV *scalar)
1410 PROTOTYPE: $
1411 CODE: 1476 CODE:
1412 sv_unmagic (scalar, MMAP_MAGIC); 1477 sv_unmagic (scalar, MMAP_MAGIC);
1413 1478
1414int 1479int
1415mlockall (int flags) 1480madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1416 PROTOTYPE: $ 1481 ALIAS:
1482 mprotect = 1
1417 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);
1418#if _POSIX_MEMLOCK 1529#if _POSIX_MEMLOCK
1419#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 1530 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 1531#else
1425 RETVAL = -1; 1532 RETVAL = ((errno = ENOSYS), -1);
1426 errno = ENOSYS;
1427#endif 1533#endif
1534}
1428 OUTPUT: 1535 OUTPUT:
1429 RETVAL 1536 RETVAL
1430 1537
1431int 1538int
1432munlockall () 1539munlockall ()
1433 PROTOTYPE:
1434 CODE: 1540 CODE:
1435#if _POSIX_MEMLOCK 1541#if _POSIX_MEMLOCK
1436 munlockall (); 1542 munlockall ();
1437#else 1543#else
1438 RETVAL = -1; 1544 RETVAL = -1;

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