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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.168 by root, Wed Aug 4 14:02:58 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:
… …
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#endif
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
611#endif 651#endif
612 652
613#define MMAP_MAGIC PERL_MAGIC_ext 653#define MMAP_MAGIC PERL_MAGIC_ext
614 654
615static int 655static int
… …
699 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM) 739 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
700 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE) 740 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
701 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED) 741 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
702 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED) 742 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
703 743
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
704 const_iv (ST_RDONLY) 750 const_iv (ST_RDONLY)
705 const_iv (ST_NOSUID) 751 const_iv (ST_NOSUID)
706 const_iv (ST_NODEV) 752 const_iv (ST_NODEV)
707 const_iv (ST_NOEXEC) 753 const_iv (ST_NOEXEC)
708 const_iv (ST_SYNCHRONOUS) 754 const_iv (ST_SYNCHRONOUS)
… …
712 const_iv (ST_IMMUTABLE) 758 const_iv (ST_IMMUTABLE)
713 const_iv (ST_NOATIME) 759 const_iv (ST_NOATIME)
714 const_iv (ST_NODIRATIME) 760 const_iv (ST_NODIRATIME)
715 const_iv (ST_RELATIME) 761 const_iv (ST_RELATIME)
716 762
763 const_iv (PROT_NONE)
717 const_iv (PROT_EXEC) 764 const_iv (PROT_EXEC)
718 const_iv (PROT_NONE)
719 const_iv (PROT_READ) 765 const_iv (PROT_READ)
720 const_iv (PROT_WRITE) 766 const_iv (PROT_WRITE)
721 767
722 /*const_iv (MAP_FIXED)*/ 768 /*const_iv (MAP_FIXED)*/
723 const_iv (MAP_PRIVATE) 769 const_iv (MAP_PRIVATE)
… …
729 const_iv (MAP_LOCKED) 775 const_iv (MAP_LOCKED)
730 const_iv (MAP_NORESERVE) 776 const_iv (MAP_NORESERVE)
731 const_iv (MAP_POPULATE) 777 const_iv (MAP_POPULATE)
732 const_iv (MAP_NONBLOCK) 778 const_iv (MAP_NONBLOCK)
733 779
734 const_iv (MCL_FUTURE) 780 const_eio (MCL_FUTURE)
735 const_iv (MCL_CURRENT) 781 const_eio (MCL_CURRENT)
736 782
737 const_eio (MS_ASYNC) 783 const_eio (MS_ASYNC)
738 const_eio (MS_INVALIDATE) 784 const_eio (MS_INVALIDATE)
739 const_eio (MS_SYNC) 785 const_eio (MS_SYNC)
740 786
… …
814 CODE: 860 CODE:
815 max_outstanding = maxreqs; 861 max_outstanding = maxreqs;
816 862
817void 863void
818aio_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)
819 PROTOTYPE: $$$;$
820 PPCODE: 865 PPCODE:
821{ 866{
822 dREQ; 867 dREQ;
823 868
824 req->type = EIO_OPEN; 869 req->type = EIO_OPEN;
… …
830 REQ_SEND; 875 REQ_SEND;
831} 876}
832 877
833void 878void
834aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 879aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
835 PROTOTYPE: $;$
836 ALIAS: 880 ALIAS:
837 aio_fsync = EIO_FSYNC 881 aio_fsync = EIO_FSYNC
838 aio_fdatasync = EIO_FDATASYNC 882 aio_fdatasync = EIO_FDATASYNC
839 PPCODE: 883 PPCODE:
840{ 884{
… …
848 REQ_SEND (req); 892 REQ_SEND (req);
849} 893}
850 894
851void 895void
852aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) 896aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
853 PROTOTYPE: $$$$;$
854 PPCODE: 897 PPCODE:
855{ 898{
856 int fd = s_fileno_croak (fh, 0); 899 int fd = s_fileno_croak (fh, 0);
857 dREQ; 900 dREQ;
858 901
… …
866 REQ_SEND (req); 909 REQ_SEND (req);
867} 910}
868 911
869void 912void
870aio_close (SV *fh, SV *callback=&PL_sv_undef) 913aio_close (SV *fh, SV *callback=&PL_sv_undef)
871 PROTOTYPE: $;$
872 PPCODE: 914 PPCODE:
873{ 915{
874 static int close_pipe = -1; /* dummy fd to close fds via dup2 */ 916 static int close_pipe = -1; /* dummy fd to close fds via dup2 */
875 int fd = s_fileno_croak (fh, 0); 917 int fd = s_fileno_croak (fh, 0);
876 dREQ; 918 dREQ;
… …
898void 940void
899aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 941aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
900 ALIAS: 942 ALIAS:
901 aio_read = EIO_READ 943 aio_read = EIO_READ
902 aio_write = EIO_WRITE 944 aio_write = EIO_WRITE
903 PROTOTYPE: $$$$$;$
904 PPCODE: 945 PPCODE:
905{ 946{
906 STRLEN svlen; 947 STRLEN svlen;
907 int fd = s_fileno_croak (fh, ix == EIO_WRITE); 948 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
908 char *svptr = SvPVbyte (data, svlen); 949 char *svptr = SvPVbyte (data, svlen);
… …
949 } 990 }
950} 991}
951 992
952void 993void
953aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 994aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
954 PROTOTYPE: $$;$
955 PPCODE: 995 PPCODE:
956{ 996{
957 SV *data; 997 SV *data;
958 dREQ; 998 dREQ;
959 999
… …
964 REQ_SEND; 1004 REQ_SEND;
965} 1005}
966 1006
967void 1007void
968aio_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)
969 PROTOTYPE: $$$$;$
970 PPCODE: 1009 PPCODE:
971{ 1010{
972 int ifd = s_fileno_croak (in_fh , 0); 1011 int ifd = s_fileno_croak (in_fh , 0);
973 int ofd = s_fileno_croak (out_fh, 1); 1012 int ofd = s_fileno_croak (out_fh, 1);
974 dREQ; 1013 dREQ;
… …
984 REQ_SEND; 1023 REQ_SEND;
985} 1024}
986 1025
987void 1026void
988aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef) 1027aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
989 PROTOTYPE: $$$;$
990 PPCODE: 1028 PPCODE:
991{ 1029{
992 int fd = s_fileno_croak (fh, 0); 1030 int fd = s_fileno_croak (fh, 0);
993 dREQ; 1031 dREQ;
994 1032
… …
1195void 1233void
1196aio_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)
1197 ALIAS: 1235 ALIAS:
1198 aio_mtouch = EIO_MTOUCH 1236 aio_mtouch = EIO_MTOUCH
1199 aio_msync = EIO_MSYNC 1237 aio_msync = EIO_MSYNC
1200 PROTOTYPE: $$$$;$
1201 PPCODE: 1238 PPCODE:
1202{ 1239{
1203 STRLEN svlen; 1240 STRLEN svlen;
1241 char *svptr = SvPVbyte (data, svlen);
1204 UV len = SvUV (length); 1242 UV len = SvUV (length);
1205 char *svptr = SvPVbyte (data, svlen);
1206 1243
1207 if (offset < 0) 1244 if (offset < 0)
1208 offset += svlen; 1245 offset += svlen;
1209 1246
1210 if (offset < 0 || offset > svlen) 1247 if (offset < 0 || offset > svlen)
… …
1215 1252
1216 { 1253 {
1217 dREQ; 1254 dREQ;
1218 1255
1219 req->type = ix; 1256 req->type = ix;
1220 req->size = len;
1221 req->sv2 = SvREFCNT_inc (data); 1257 req->sv2 = SvREFCNT_inc (data);
1222 req->ptr2 = (char *)svptr + offset; 1258 req->ptr2 = (char *)svptr + offset;
1259 req->size = len;
1223 req->int1 = flags; 1260 req->int1 = flags;
1224 1261
1225 REQ_SEND; 1262 REQ_SEND;
1226 } 1263 }
1227} 1264}
1228 1265
1229void 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
1230aio_busy (double delay, SV *callback=&PL_sv_undef) 1308aio_busy (double delay, SV *callback=&PL_sv_undef)
1231 PPCODE: 1309 PPCODE:
1232{ 1310{
1233 dREQ; 1311 dREQ;
1234 1312
… …
1238 REQ_SEND; 1316 REQ_SEND;
1239} 1317}
1240 1318
1241void 1319void
1242aio_group (SV *callback=&PL_sv_undef) 1320aio_group (SV *callback=&PL_sv_undef)
1243 PROTOTYPE: ;$
1244 PPCODE: 1321 PPCODE:
1245{ 1322{
1246 dREQ; 1323 dREQ;
1247 1324
1248 req->type = EIO_GROUP; 1325 req->type = EIO_GROUP;
… …
1265 REQ_SEND; 1342 REQ_SEND;
1266} 1343}
1267 1344
1268int 1345int
1269aioreq_pri (int pri = 0) 1346aioreq_pri (int pri = 0)
1270 PROTOTYPE: ;$
1271 CODE: 1347 CODE:
1272 RETVAL = next_pri; 1348 RETVAL = next_pri;
1273 if (items > 0) 1349 if (items > 0)
1274 { 1350 {
1275 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN; 1351 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
… …
1287 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX; 1363 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1288 next_pri = nice; 1364 next_pri = nice;
1289 1365
1290void 1366void
1291flush () 1367flush ()
1292 PROTOTYPE:
1293 CODE: 1368 CODE:
1294 while (eio_nreqs ()) 1369 while (eio_nreqs ())
1295 { 1370 {
1296 poll_wait (); 1371 poll_wait ();
1297 poll_cb (); 1372 poll_cb ();
1298 } 1373 }
1299 1374
1300int 1375int
1301poll() 1376poll ()
1302 PROTOTYPE:
1303 CODE: 1377 CODE:
1304 poll_wait (); 1378 poll_wait ();
1305 RETVAL = poll_cb (); 1379 RETVAL = poll_cb ();
1306 OUTPUT: 1380 OUTPUT:
1307 RETVAL 1381 RETVAL
1308 1382
1309int 1383int
1310poll_fileno() 1384poll_fileno ()
1311 PROTOTYPE:
1312 CODE: 1385 CODE:
1313 RETVAL = s_epipe_fd (&respipe); 1386 RETVAL = s_epipe_fd (&respipe);
1314 OUTPUT: 1387 OUTPUT:
1315 RETVAL 1388 RETVAL
1316 1389
1317int 1390int
1318poll_cb(...) 1391poll_cb (...)
1319 PROTOTYPE: 1392 PROTOTYPE:
1320 CODE: 1393 CODE:
1321 RETVAL = poll_cb (); 1394 RETVAL = poll_cb ();
1322 OUTPUT: 1395 OUTPUT:
1323 RETVAL 1396 RETVAL
1324 1397
1325void 1398void
1326poll_wait() 1399poll_wait ()
1327 PROTOTYPE:
1328 CODE: 1400 CODE:
1329 poll_wait (); 1401 poll_wait ();
1330 1402
1331int 1403int
1332nreqs() 1404nreqs ()
1333 PROTOTYPE:
1334 CODE: 1405 CODE:
1335 RETVAL = eio_nreqs (); 1406 RETVAL = eio_nreqs ();
1336 OUTPUT: 1407 OUTPUT:
1337 RETVAL 1408 RETVAL
1338 1409
1339int 1410int
1340nready() 1411nready ()
1341 PROTOTYPE:
1342 CODE: 1412 CODE:
1343 RETVAL = eio_nready (); 1413 RETVAL = eio_nready ();
1344 OUTPUT: 1414 OUTPUT:
1345 RETVAL 1415 RETVAL
1346 1416
1347int 1417int
1348npending() 1418npending ()
1349 PROTOTYPE:
1350 CODE: 1419 CODE:
1351 RETVAL = eio_npending (); 1420 RETVAL = eio_npending ();
1352 OUTPUT: 1421 OUTPUT:
1353 RETVAL 1422 RETVAL
1354 1423
1355int 1424int
1356nthreads() 1425nthreads ()
1357 PROTOTYPE:
1358 CODE: 1426 CODE:
1359 RETVAL = eio_nthreads (); 1427 RETVAL = eio_nthreads ();
1360 OUTPUT: 1428 OUTPUT:
1361 RETVAL 1429 RETVAL
1362 1430
1363int 1431int
1364fadvise (aio_rfd fh, off_t offset, off_t length, IV advice) 1432fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1365 PROTOTYPE: $$$$
1366 CODE: 1433 CODE:
1367#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
1368 RETVAL = posix_fadvise (fh, offset, length, advice); 1434 RETVAL = posix_fadvise (fh, offset, length, advice);
1369#else
1370 RETVAL = errno = ENOSYS; /* yes, this is actually correct */
1371#endif
1372 OUTPUT: 1435 OUTPUT:
1373 RETVAL 1436 RETVAL
1374 1437
1375ssize_t 1438ssize_t
1376sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count) 1439sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1377 PROTOTYPE: $$$$
1378 CODE: 1440 CODE:
1379 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count); 1441 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1380 OUTPUT: 1442 OUTPUT:
1381 RETVAL 1443 RETVAL
1382 1444
1383void 1445void
1384mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0) 1446mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1385 PROTOTYPE: $$$$$;$
1386 PPCODE: 1447 PPCODE:
1387 sv_unmagic (scalar, MMAP_MAGIC); 1448 sv_unmagic (scalar, MMAP_MAGIC);
1388{ 1449{
1389 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;
1390 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 1451 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
… …
1413 XSRETURN_YES; 1474 XSRETURN_YES;
1414} 1475}
1415 1476
1416void 1477void
1417munmap (SV *scalar) 1478munmap (SV *scalar)
1418 PROTOTYPE: $
1419 CODE: 1479 CODE:
1420 sv_unmagic (scalar, MMAP_MAGIC); 1480 sv_unmagic (scalar, MMAP_MAGIC);
1421 1481
1422int 1482int
1423mlockall (int flags) 1483madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1424 PROTOTYPE: $ 1484 ALIAS:
1485 mprotect = 1
1425 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);
1426#if _POSIX_MEMLOCK 1532#if _POSIX_MEMLOCK_RANGE
1427#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 1533 RETVAL = munlock (addr, len);
1428 extern int mallopt (int, int);
1429 mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1430#endif
1431 mlockall (flags);
1432#else 1534#else
1433 RETVAL = -1; 1535 RETVAL = ((errno = ENOSYS), -1);
1434 errno = ENOSYS;
1435#endif 1536#endif
1537}
1436 OUTPUT: 1538 OUTPUT:
1437 RETVAL 1539 RETVAL
1438 1540
1439int 1541int
1440munlockall () 1542munlockall ()
1441 PROTOTYPE:
1442 CODE: 1543 CODE:
1443#if _POSIX_MEMLOCK 1544#if _POSIX_MEMLOCK
1444 munlockall (); 1545 munlockall ();
1445#else 1546#else
1446 RETVAL = -1; 1547 RETVAL = -1;

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