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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 1.179 by root, Fri Jan 7 21:47:15 2011 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 || _POSIX_MAPPED_FILES 21#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _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
… …
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:
… …
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)
611#endif 642#endif
612 643
644#if !_POSIX_MEMORY_PROTECTION
645# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
646# define PROT_NONE 0
647# define PROT_WRITE 0
648# define MAP_PRIVATE 0
649# define MAP_SHARED 0
650# define MAP_FIXED 0
651#endif
652
613#define MMAP_MAGIC PERL_MAGIC_ext 653#define MMAP_MAGIC PERL_MAGIC_ext
614 654
615static int 655static int
616mmap_free (pTHX_ SV *sv, MAGIC *mg) 656mmap_free (pTHX_ SV *sv, MAGIC *mg)
617{ 657{
… …
620 errno = old_errno; 660 errno = old_errno;
621 661
622 mg->mg_obj = 0; /* just in case */ 662 mg->mg_obj = 0; /* just in case */
623 663
624 SvREADONLY_off (sv); 664 SvREADONLY_off (sv);
665
666 if (SvPVX (sv) != mg->mg_ptr)
667 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
668
625 SvCUR_set (sv, 0); 669 SvCUR_set (sv, 0);
626 SvLEN_set (sv, 0);
627 SvPVX (sv) = 0; 670 SvPVX (sv) = 0;
628 SvOK_off (sv); 671 SvOK_off (sv);
629 672
630 return 0; 673 return 0;
631} 674}
… …
696 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM) 739 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
697 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 740 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
698 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 741 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
699 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 742 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
700 743
744 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
745 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
746 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
747 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
748 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
749
701 const_iv (ST_RDONLY) 750 const_iv (ST_RDONLY)
702 const_iv (ST_NOSUID) 751 const_iv (ST_NOSUID)
703 const_iv (ST_NODEV) 752 const_iv (ST_NODEV)
704 const_iv (ST_NOEXEC) 753 const_iv (ST_NOEXEC)
705 const_iv (ST_SYNCHRONOUS) 754 const_iv (ST_SYNCHRONOUS)
… …
709 const_iv (ST_IMMUTABLE) 758 const_iv (ST_IMMUTABLE)
710 const_iv (ST_NOATIME) 759 const_iv (ST_NOATIME)
711 const_iv (ST_NODIRATIME) 760 const_iv (ST_NODIRATIME)
712 const_iv (ST_RELATIME) 761 const_iv (ST_RELATIME)
713 762
763 const_iv (PROT_NONE)
714 const_iv (PROT_EXEC) 764 const_iv (PROT_EXEC)
715 const_iv (PROT_NONE)
716 const_iv (PROT_READ) 765 const_iv (PROT_READ)
717 const_iv (PROT_WRITE) 766 const_iv (PROT_WRITE)
718 767
719 /*const_iv (MAP_FIXED)*/ 768 /*const_iv (MAP_FIXED)*/
720 const_iv (MAP_PRIVATE) 769 const_iv (MAP_PRIVATE)
… …
726 const_iv (MAP_LOCKED) 775 const_iv (MAP_LOCKED)
727 const_iv (MAP_NORESERVE) 776 const_iv (MAP_NORESERVE)
728 const_iv (MAP_POPULATE) 777 const_iv (MAP_POPULATE)
729 const_iv (MAP_NONBLOCK) 778 const_iv (MAP_NONBLOCK)
730 779
731 const_iv (MCL_FUTURE) 780 const_eio (MCL_FUTURE)
732 const_iv (MCL_CURRENT) 781 const_eio (MCL_CURRENT)
733 782
734 const_eio (MS_ASYNC) 783 const_eio (MS_ASYNC)
735 const_eio (MS_INVALIDATE) 784 const_eio (MS_INVALIDATE)
736 const_eio (MS_SYNC) 785 const_eio (MS_SYNC)
737 786
… …
811 CODE: 860 CODE:
812 max_outstanding = maxreqs; 861 max_outstanding = maxreqs;
813 862
814void 863void
815aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 864aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
816 PROTOTYPE: $$$;$
817 PPCODE: 865 PPCODE:
818{ 866{
819 dREQ; 867 dREQ;
820 868
821 req->type = EIO_OPEN; 869 req->type = EIO_OPEN;
… …
827 REQ_SEND; 875 REQ_SEND;
828} 876}
829 877
830void 878void
831aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 879aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
832 PROTOTYPE: $;$
833 ALIAS: 880 ALIAS:
834 aio_fsync = EIO_FSYNC 881 aio_fsync = EIO_FSYNC
835 aio_fdatasync = EIO_FDATASYNC 882 aio_fdatasync = EIO_FDATASYNC
836 PPCODE: 883 PPCODE:
837{ 884{
… …
845 REQ_SEND (req); 892 REQ_SEND (req);
846} 893}
847 894
848void 895void
849aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) 896aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
850 PROTOTYPE: $$$$;$
851 PPCODE: 897 PPCODE:
852{ 898{
853 int fd = s_fileno_croak (fh, 0); 899 int fd = s_fileno_croak (fh, 0);
854 dREQ; 900 dREQ;
855 901
… …
863 REQ_SEND (req); 909 REQ_SEND (req);
864} 910}
865 911
866void 912void
867aio_close (SV *fh, SV *callback=&PL_sv_undef) 913aio_close (SV *fh, SV *callback=&PL_sv_undef)
868 PROTOTYPE: $;$
869 PPCODE: 914 PPCODE:
870{ 915{
871 static int close_pipe = -1; /* dummy fd to close fds via dup2 */ 916 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
872 int fd = s_fileno_croak (fh, 0); 917 int fd = s_fileno_croak (fh, 0);
873 dREQ; 918 dREQ;
… …
895void 940void
896aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 941aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
897 ALIAS: 942 ALIAS:
898 aio_read = EIO_READ 943 aio_read = EIO_READ
899 aio_write = EIO_WRITE 944 aio_write = EIO_WRITE
900 PROTOTYPE: $$$$$;$
901 PPCODE: 945 PPCODE:
902{ 946{
903 STRLEN svlen; 947 STRLEN svlen;
904 int fd = s_fileno_croak (fh, ix == EIO_WRITE); 948 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
905 char *svptr = SvPVbyte (data, svlen); 949 char *svptr = SvPVbyte (data, svlen);
… …
946 } 990 }
947} 991}
948 992
949void 993void
950aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 994aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
951 PROTOTYPE: $$;$
952 PPCODE: 995 PPCODE:
953{ 996{
954 SV *data; 997 SV *data;
955 dREQ; 998 dREQ;
956 999
… …
961 REQ_SEND; 1004 REQ_SEND;
962} 1005}
963 1006
964void 1007void
965aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef) 1008aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
966 PROTOTYPE: $$$$;$
967 PPCODE: 1009 PPCODE:
968{ 1010{
969 int ifd = s_fileno_croak (in_fh , 0); 1011 int ifd = s_fileno_croak (in_fh , 0);
970 int ofd = s_fileno_croak (out_fh, 1); 1012 int ofd = s_fileno_croak (out_fh, 1);
971 dREQ; 1013 dREQ;
… …
981 REQ_SEND; 1023 REQ_SEND;
982} 1024}
983 1025
984void 1026void
985aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) 1027aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
986 PROTOTYPE: $$$;$
987 PPCODE: 1028 PPCODE:
988{ 1029{
989 int fd = s_fileno_croak (fh, 0); 1030 int fd = s_fileno_croak (fh, 0);
990 dREQ; 1031 dREQ;
991 1032
… …
1192void 1233void
1193aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef) 1234aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1194 ALIAS: 1235 ALIAS:
1195 aio_mtouch = EIO_MTOUCH 1236 aio_mtouch = EIO_MTOUCH
1196 aio_msync = EIO_MSYNC 1237 aio_msync = EIO_MSYNC
1197 PROTOTYPE: $$$$;$
1198 PPCODE: 1238 PPCODE:
1199{ 1239{
1200 STRLEN svlen; 1240 STRLEN svlen;
1241 char *svptr = SvPVbyte (data, svlen);
1201 UV len = SvUV (length); 1242 UV len = SvUV (length);
1202 char *svptr = SvPVbyte (data, svlen);
1203 1243
1204 if (offset < 0) 1244 if (offset < 0)
1205 offset += svlen; 1245 offset += svlen;
1206 1246
1207 if (offset < 0 || offset > svlen) 1247 if (offset < 0 || offset > svlen)
… …
1212 1252
1213 { 1253 {
1214 dREQ; 1254 dREQ;
1215 1255
1216 req->type = ix; 1256 req->type = ix;
1217 req->size = len;
1218 req->sv2 = SvREFCNT_inc (data); 1257 req->sv2 = SvREFCNT_inc (data);
1219 req->ptr2 = (char *)svptr + offset; 1258 req->ptr2 = (char *)svptr + offset;
1259 req->size = len;
1220 req->int1 = flags; 1260 req->int1 = flags;
1221 1261
1222 REQ_SEND; 1262 REQ_SEND;
1223 } 1263 }
1224} 1264}
1225 1265
1226void 1266void
1267aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1268 PPCODE:
1269{
1270 STRLEN svlen;
1271 char *svptr = SvPVbyte (data, svlen);
1272 UV len = SvUV (length);
1273
1274 if (offset < 0)
1275 offset += svlen;
1276
1277 if (offset < 0 || offset > svlen)
1278 croak ("offset outside of scalar");
1279
1280 if (!SvOK (length) || len + offset > svlen)
1281 len = svlen - offset;
1282
1283 {
1284 dREQ;
1285
1286 req->type = EIO_MLOCK;
1287 req->sv2 = SvREFCNT_inc (data);
1288 req->ptr2 = (char *)svptr + offset;
1289 req->size = len;
1290
1291 REQ_SEND;
1292 }
1293}
1294
1295void
1296aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1297 PPCODE:
1298{
1299 dREQ;
1300
1301 req->type = EIO_MLOCKALL;
1302 req->int1 = flags;
1303
1304 REQ_SEND;
1305}
1306
1307void
1227aio_busy (double delay, SV *callback=&PL_sv_undef) 1308aio_busy (double delay, SV *callback=&PL_sv_undef)
1228 PPCODE: 1309 PPCODE:
1229{ 1310{
1230 dREQ; 1311 dREQ;
1231 1312
… …
1235 REQ_SEND; 1316 REQ_SEND;
1236} 1317}
1237 1318
1238void 1319void
1239aio_group (SV *callback=&PL_sv_undef) 1320aio_group (SV *callback=&PL_sv_undef)
1240 PROTOTYPE: ;$
1241 PPCODE: 1321 PPCODE:
1242{ 1322{
1243 dREQ; 1323 dREQ;
1244 1324
1245 req->type = EIO_GROUP; 1325 req->type = EIO_GROUP;
… …
1262 REQ_SEND; 1342 REQ_SEND;
1263} 1343}
1264 1344
1265int 1345int
1266aioreq_pri (int pri = 0) 1346aioreq_pri (int pri = 0)
1267 PROTOTYPE: ;$
1268 CODE: 1347 CODE:
1269 RETVAL = next_pri; 1348 RETVAL = next_pri;
1270 if (items > 0) 1349 if (items > 0)
1271 { 1350 {
1272 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN; 1351 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
… …
1284 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX; 1363 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1285 next_pri = nice; 1364 next_pri = nice;
1286 1365
1287void 1366void
1288flush () 1367flush ()
1289 PROTOTYPE:
1290 CODE: 1368 CODE:
1291 while (eio_nreqs ()) 1369 while (eio_nreqs ())
1292 { 1370 {
1293 poll_wait (); 1371 poll_wait ();
1294 poll_cb (); 1372 poll_cb ();
1295 } 1373 }
1296 1374
1297int 1375int
1298poll() 1376poll ()
1299 PROTOTYPE:
1300 CODE: 1377 CODE:
1301 poll_wait (); 1378 poll_wait ();
1302 RETVAL = poll_cb (); 1379 RETVAL = poll_cb ();
1303 OUTPUT: 1380 OUTPUT:
1304 RETVAL 1381 RETVAL
1305 1382
1306int 1383int
1307poll_fileno() 1384poll_fileno ()
1308 PROTOTYPE:
1309 CODE: 1385 CODE:
1310 RETVAL = s_epipe_fd (&respipe); 1386 RETVAL = s_epipe_fd (&respipe);
1311 OUTPUT: 1387 OUTPUT:
1312 RETVAL 1388 RETVAL
1313 1389
1314int 1390int
1315poll_cb(...) 1391poll_cb (...)
1316 PROTOTYPE: 1392 PROTOTYPE:
1317 CODE: 1393 CODE:
1318 RETVAL = poll_cb (); 1394 RETVAL = poll_cb ();
1319 OUTPUT: 1395 OUTPUT:
1320 RETVAL 1396 RETVAL
1321 1397
1322void 1398void
1323poll_wait() 1399poll_wait ()
1324 PROTOTYPE:
1325 CODE: 1400 CODE:
1326 poll_wait (); 1401 poll_wait ();
1327 1402
1328int 1403int
1329nreqs() 1404nreqs ()
1330 PROTOTYPE:
1331 CODE: 1405 CODE:
1332 RETVAL = eio_nreqs (); 1406 RETVAL = eio_nreqs ();
1333 OUTPUT: 1407 OUTPUT:
1334 RETVAL 1408 RETVAL
1335 1409
1336int 1410int
1337nready() 1411nready ()
1338 PROTOTYPE:
1339 CODE: 1412 CODE:
1340 RETVAL = eio_nready (); 1413 RETVAL = eio_nready ();
1341 OUTPUT: 1414 OUTPUT:
1342 RETVAL 1415 RETVAL
1343 1416
1344int 1417int
1345npending() 1418npending ()
1346 PROTOTYPE:
1347 CODE: 1419 CODE:
1348 RETVAL = eio_npending (); 1420 RETVAL = eio_npending ();
1349 OUTPUT: 1421 OUTPUT:
1350 RETVAL 1422 RETVAL
1351 1423
1352int 1424int
1353nthreads() 1425nthreads ()
1354 PROTOTYPE:
1355 CODE: 1426 CODE:
1356 RETVAL = eio_nthreads (); 1427 RETVAL = eio_nthreads ();
1357 OUTPUT: 1428 OUTPUT:
1358 RETVAL 1429 RETVAL
1359 1430
1360int 1431int
1361fadvise (aio_rfd fh, off_t offset, off_t length, IV advice) 1432fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1362 PROTOTYPE: $$$$
1363 CODE: 1433 CODE:
1364#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1365 RETVAL = posix_fadvise (fh, offset, length, advice); 1434 RETVAL = posix_fadvise (fh, offset, length, advice);
1366#else
1367 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1368#endif
1369 OUTPUT: 1435 OUTPUT:
1370 RETVAL 1436 RETVAL
1371 1437
1372ssize_t 1438ssize_t
1373sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count) 1439sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1374 PROTOTYPE: $$$$
1375 CODE: 1440 CODE:
1376 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1441 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1377 OUTPUT: 1442 OUTPUT:
1378 RETVAL 1443 RETVAL
1379 1444
1380void 1445void
1381mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0) 1446mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1382 PROTOTYPE: $$$$$;$
1383 PPCODE: 1447 PPCODE:
1384 sv_unmagic (scalar, MMAP_MAGIC); 1448 sv_unmagic (scalar, MMAP_MAGIC);
1385{ 1449{
1386 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1; 1450 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1387 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 1451 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1388 if (addr == (void *)-1) 1452 if (addr == (void *)-1)
1389 XSRETURN_NO; 1453 XSRETURN_NO;
1390 1454
1455 sv_force_normal (scalar);
1456
1391 /* we store the length in mg_obj, as namlen is I32 :/ */ 1457 /* we store the length in mg_obj, as namlen is I32 :/ */
1392 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0) 1458 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1393 ->mg_obj = (SV *)length; 1459 ->mg_obj = (SV *)length;
1394 1460
1395 SvUPGRADE (scalar, SVt_PV); /* nop... */ 1461 SvUPGRADE (scalar, SVt_PV); /* nop... */
1462
1396 if (!(prot & PROT_WRITE)) 1463 if (!(prot & PROT_WRITE))
1397 SvREADONLY_on (scalar); 1464 SvREADONLY_on (scalar);
1465
1466 if (SvLEN (scalar))
1467 Safefree (SvPVX (scalar));
1398 1468
1399 SvPVX (scalar) = (char *)addr; 1469 SvPVX (scalar) = (char *)addr;
1400 SvCUR_set (scalar, length); 1470 SvCUR_set (scalar, length);
1401 SvLEN_set (scalar, 0); 1471 SvLEN_set (scalar, 0);
1402 SvPOK_only (scalar); 1472 SvPOK_only (scalar);
… …
1404 XSRETURN_YES; 1474 XSRETURN_YES;
1405} 1475}
1406 1476
1407void 1477void
1408munmap (SV *scalar) 1478munmap (SV *scalar)
1409 PROTOTYPE: $
1410 CODE: 1479 CODE:
1411 sv_unmagic (scalar, MMAP_MAGIC); 1480 sv_unmagic (scalar, MMAP_MAGIC);
1412 1481
1413int 1482int
1414mlockall (int flags) 1483madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1415 PROTOTYPE: $ 1484 ALIAS:
1485 mprotect = 1
1416 CODE: 1486 CODE:
1487{
1488 STRLEN svlen;
1489 void *addr = SvPVbyte (scalar, svlen);
1490 size_t len = SvUV (length);
1491
1492 if (offset < 0)
1493 offset += svlen;
1494
1495 if (offset < 0 || offset > svlen)
1496 croak ("offset outside of scalar");
1497
1498 if (!SvOK (length) || len + offset > svlen)
1499 len = svlen - offset;
1500
1501 addr = (void *)(((intptr_t)addr) + offset);
1502 eio_page_align (&addr, &len);
1503
1504 switch (ix)
1505 {
1506 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1507 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1508 }
1509}
1510 OUTPUT:
1511 RETVAL
1512
1513int
1514munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1515 CODE:
1516{
1517 STRLEN svlen;
1518 void *addr = SvPVbyte (scalar, svlen);
1519 size_t len = SvUV (length);
1520
1521 if (offset < 0)
1522 offset += svlen;
1523
1524 if (offset < 0 || offset > svlen)
1525 croak ("offset outside of scalar");
1526
1527 if (!SvOK (length) || len + offset > svlen)
1528 len = svlen - offset;
1529
1530 addr = (void *)(((intptr_t)addr) + offset);
1531 eio_page_align (&addr, &len);
1417#if _POSIX_MEMLOCK 1532#if _POSIX_MEMLOCK_RANGE
1418#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 1533 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 1534#else
1424 RETVAL = -1; 1535 RETVAL = ((errno = ENOSYS), -1);
1425 errno = ENOSYS;
1426#endif 1536#endif
1537}
1427 OUTPUT: 1538 OUTPUT:
1428 RETVAL 1539 RETVAL
1429 1540
1430int 1541int
1431munlockall () 1542munlockall ()
1432 PROTOTYPE:
1433 CODE: 1543 CODE:
1434#if _POSIX_MEMLOCK 1544#if _POSIX_MEMLOCK
1435 munlockall (); 1545 munlockall ();
1436#else 1546#else
1437 RETVAL = -1; 1547 RETVAL = -1;

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