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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.244 by root, Tue May 30 22:45:52 2017 UTC vs.
Revision 1.262 by root, Sun Aug 12 05:21:35 2018 UTC

… …
4 4
5#include "EXTERN.h" 5#include "EXTERN.h"
6#include "perl.h" 6#include "perl.h"
7#include "XSUB.h" 7#include "XSUB.h"
8 8
9#include "schmorp.h" 9#if !defined mg_findext
10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
11#endif
10 12
11#include <stddef.h> 13#include <stddef.h>
12#include <stdlib.h> 14#include <stdlib.h>
13#include <errno.h> 15#include <errno.h>
14#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
15#include <sys/stat.h> 18#include <sys/stat.h>
16#include <limits.h> 19#include <limits.h>
17#include <fcntl.h> 20#include <fcntl.h>
18#include <sched.h> 21#include <sched.h>
19 22
… …
104#define expect_false(expr) expect ((expr) != 0, 0) 107#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1) 108#define expect_true(expr) expect ((expr) != 0, 1)
106 109
107/*****************************************************************************/ 110/*****************************************************************************/
108 111
112#include "config.h"
113
114#if HAVE_ST_XTIMENSEC
115# define ATIMENSEC PL_statcache.st_atimensec
116# define MTIMENSEC PL_statcache.st_mtimensec
117# define CTIMENSEC PL_statcache.st_ctimensec
118#elif HAVE_ST_XTIMESPEC
119# define ATIMENSEC PL_statcache.st_atim.tv_nsec
120# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
121# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
122#else
123# define ATIMENSEC 0
124# define MTIMENSEC 0
125# define CTIMENSEC 0
126#endif
127
128#include "schmorp.h"
129
130#if HAVE_EVENTFD
131# include <sys/eventfd.h>
132#endif
133
134#if HAVE_TIMERFD
135# include <sys/timerfd.h>
136#endif
137
138#if HAVE_RLIMITS
139 #include <sys/time.h>
140 #include <sys/resource.h>
141#endif
142
109typedef SV SV8; /* byte-sv, used for argument-checking */ 143typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */ 144typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */ 145typedef int aio_wfd; /* write file descriptor */
112 146
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash; 147static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
… …
119 STRLEN stroffset; \ 153 STRLEN stroffset; \
120 SV *self; 154 SV *self;
121 155
122#define EIO_NO_WRAPPERS 1 156#define EIO_NO_WRAPPERS 1
123 157
124#include "libeio/config.h"
125#include "libeio/eio.h" 158#include "libeio/eio.h"
126 159
127static int req_invoke (eio_req *req); 160static int req_invoke (eio_req *req);
128#define EIO_FINISH(req) req_invoke (req) 161#define EIO_FINISH(req) req_invoke (req)
129static void req_destroy (eio_req *grp); 162static void req_destroy (eio_req *grp);
… …
145# else 178# else
146# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */ 179# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
147# endif 180# endif
148#endif 181#endif
149 182
183#ifndef makedev
184# define makedev(maj,min) (((maj) << 8) | (min))
185#endif
186#ifndef major
187# define major(dev) ((dev) >> 8)
188#endif
189#ifndef minor
190# define minor(dev) ((dev) & 0xff)
191#endif
192
193#if PAGESIZE <= 0
194# define PAGESIZE sysconf (_SC_PAGESIZE)
195#endif
196
197/*****************************************************************************/
198
199#if !_POSIX_MAPPED_FILES
200# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
201# define munmap(addr,length) EIO_ENOSYS ()
202#endif
203
204#if !_POSIX_MEMORY_PROTECTION
205# define mprotect(addr,len,prot) EIO_ENOSYS ()
206#endif
207
208#if !MREMAP_MAYMOVE
209# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
210#endif
211
212#define FOREIGN_MAGIC PERL_MAGIC_ext
213
214static int ecb_cold
215mmap_free (pTHX_ SV *sv, MAGIC *mg)
216{
217 int old_errno = errno;
218 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
219 errno = old_errno;
220
221 mg->mg_obj = 0; /* just in case */
222
223 SvREADONLY_off (sv);
224
225 if (SvPVX (sv) != mg->mg_ptr)
226 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
227
228 SvCUR_set (sv, 0);
229 SvPVX (sv) = 0;
230 SvOK_off (sv);
231
232 return 0;
233}
234
235static MGVTBL mmap_vtbl = {
236 0, 0, 0, 0, mmap_free
237};
238
239static int ecb_cold
240sysfree_free (pTHX_ SV *sv, MAGIC *mg)
241{
242 free (mg->mg_ptr);
243 mg->mg_obj = 0; /* just in case */
244
245 SvREADONLY_off (sv);
246
247 if (SvPVX (sv) != mg->mg_ptr)
248 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
249
250 SvCUR_set (sv, 0);
251 SvPVX (sv) = 0;
252 SvOK_off (sv);
253
254 return 0;
255}
256
257static MGVTBL sysfree_vtbl = {
258 0, 0, 0, 0, sysfree_free
259};
260
261/*****************************************************************************/
262
263/* helper: set scalar to foreign ptr with custom free */
264static void
265sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
266{
267 sv_force_normal (sv);
268
269 /* we store the length in mg_obj, as namlen is I32 :/ */
270 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
271 ->mg_obj = (SV *)length;
272
273 SvUPGRADE (sv, SVt_PV); /* nop... */
274
275 if (SvLEN (sv))
276 Safefree (SvPVX (sv));
277
278 SvPVX (sv) = (char *)addr;
279 SvCUR_set (sv, length);
280 SvLEN_set (sv, 0);
281 SvPOK_only (sv);
282}
283
284static void
285sv_clear_foreign (SV *sv)
286{
287 /* todo: iterate over magic and only free ours, but of course */
288 /* the perl5porters will call that (correct) behaviour buggy */
289 sv_unmagic (sv, FOREIGN_MAGIC);
290}
291
292/*****************************************************************************/
293
150/* defines all sorts of constants to 0 unless they are already defined */ 294/* defines all sorts of constants to 0 unless they are already defined */
151/* also provides const_iv_ and const_niv_ macros for them */ 295/* also provides const_iv_ and const_niv_ macros for them */
152#include "def0.h" 296#include "def0.h"
153
154#ifndef makedev
155# define makedev(maj,min) (((maj) << 8) | (min))
156#endif
157#ifndef major
158# define major(dev) ((dev) >> 8)
159#endif
160#ifndef minor
161# define minor(dev) ((dev) & 0xff)
162#endif
163
164#if PAGESIZE <= 0
165# define PAGESIZE sysconf (_SC_PAGESIZE)
166#endif
167 297
168/*****************************************************************************/ 298/*****************************************************************************/
169 299
170static void 300static void
171fiemap (eio_req *req) 301fiemap (eio_req *req)
… …
591 SvSETMAGIC (req->sv2); 721 SvSETMAGIC (req->sv2);
592 PUSHs (sv_result); 722 PUSHs (sv_result);
593 } 723 }
594 break; 724 break;
595 725
726 case EIO_SLURP:
727 {
728 if (req->result >= 0)
729 {
730 /* if length was originally not known, we steal the malloc'ed memory */
731 if (req->flags & EIO_FLAG_PTR2_FREE)
732 {
733 req->flags &= ~EIO_FLAG_PTR2_FREE;
734 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
735 }
736 else
737 {
738 SvCUR_set (req->sv2, req->result);
739 *SvEND (req->sv2) = 0;
740 SvPOK_only (req->sv2);
741 }
742
743 SvSETMAGIC (req->sv2);
744 }
745
746 PUSHs (sv_result);
747 }
748 break;
749
596 case EIO_CUSTOM: 750 case EIO_CUSTOM:
597 if (req->feed == fiemap) 751 if (req->feed == fiemap)
598 { 752 {
599#if HAVE_FIEMAP 753#if HAVE_FIEMAP
600 if (!req->result) 754 if (!req->result)
… …
743 create_respipe (); 897 create_respipe ();
744 898
745 if (eio_init (want_poll, done_poll) < 0) 899 if (eio_init (want_poll, done_poll) < 0)
746 croak ("IO::AIO: unable to initialise eio library"); 900 croak ("IO::AIO: unable to initialise eio library");
747} 901}
748
749/*****************************************************************************/
750
751#if !_POSIX_MAPPED_FILES
752# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
753# define munmap(addr,length) EIO_ENOSYS ()
754#endif
755
756#if !_POSIX_MEMORY_PROTECTION
757# define mprotect(addr,len,prot) EIO_ENOSYS ()
758#endif
759
760#define MMAP_MAGIC PERL_MAGIC_ext
761
762static int ecb_cold
763mmap_free (pTHX_ SV *sv, MAGIC *mg)
764{
765 int old_errno = errno;
766 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
767 errno = old_errno;
768
769 mg->mg_obj = 0; /* just in case */
770
771 SvREADONLY_off (sv);
772
773 if (SvPVX (sv) != mg->mg_ptr)
774 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
775
776 SvCUR_set (sv, 0);
777 SvPVX (sv) = 0;
778 SvOK_off (sv);
779
780 return 0;
781}
782
783static MGVTBL mmap_vtbl = {
784 0, 0, 0, 0, mmap_free
785};
786 902
787/*****************************************************************************/ 903/*****************************************************************************/
788 904
789static SV * 905static SV *
790get_cb (SV *cb_sv) 906get_cb (SV *cb_sv)
… …
886 req_set_path1 (req, fh_or_path); 1002 req_set_path1 (req, fh_or_path);
887 break; 1003 break;
888 } 1004 }
889} 1005}
890 1006
1007/*****************************************************************************/
1008
1009static void
1010ts_set (struct timespec *ts, NV value)
1011{
1012 ts->tv_sec = value;
1013 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
1014}
1015
1016static NV
1017ts_get (const struct timespec *ts)
1018{
1019 return ts->tv_sec + ts->tv_nsec * 1e-9;
1020}
1021
1022/*****************************************************************************/
1023
891XS(boot_IO__AIO) ecb_cold; 1024XS(boot_IO__AIO) ecb_cold;
892 1025
893MODULE = IO::AIO PACKAGE = IO::AIO 1026MODULE = IO::AIO PACKAGE = IO::AIO
894 1027
895PROTOTYPES: ENABLE 1028PROTOTYPES: ENABLE
… …
924 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL) 1057 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
925 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL) 1058 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
926 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM) 1059 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
927 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED) 1060 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
928 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED) 1061 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
929 const_niv (MADV_FREE , POSIX_MADV_FREE)
930 1062
931 /* the second block will be 0 when missing */ 1063 /* the second block will be 0 when missing */
1064 const_iv (O_ACCMODE)
1065
932 const_iv (O_RDONLY) 1066 const_iv (O_RDONLY)
933 const_iv (O_WRONLY) 1067 const_iv (O_WRONLY)
934 const_iv (O_RDWR) 1068 const_iv (O_RDWR)
935 const_iv (O_CREAT) 1069 const_iv (O_CREAT)
936 const_iv (O_TRUNC) 1070 const_iv (O_TRUNC)
… …
995 const_iv (MAP_NONBLOCK) 1129 const_iv (MAP_NONBLOCK)
996 const_iv (MAP_GROWSDOWN) 1130 const_iv (MAP_GROWSDOWN)
997 const_iv (MAP_32BIT) 1131 const_iv (MAP_32BIT)
998 const_iv (MAP_HUGETLB) 1132 const_iv (MAP_HUGETLB)
999 const_iv (MAP_STACK) 1133 const_iv (MAP_STACK)
1134
1135 const_iv (MREMAP_MAYMOVE)
1136 const_iv (MREMAP_FIXED)
1137
1138 const_iv (F_DUPFD_CLOEXEC)
1139
1140 const_iv (MSG_CMSG_CLOEXEC)
1141 const_iv (SOCK_CLOEXEC)
1142
1143 const_iv (F_OFD_GETLK)
1144 const_iv (F_OFD_SETLK)
1145 const_iv (F_OFD_GETLKW)
1000 1146
1001 const_iv (FIFREEZE) 1147 const_iv (FIFREEZE)
1002 const_iv (FITHAW) 1148 const_iv (FITHAW)
1003 const_iv (FITRIM) 1149 const_iv (FITRIM)
1004 const_iv (FICLONE) 1150 const_iv (FICLONE)
… …
1073 const_iv (SPLICE_F_MOVE) 1219 const_iv (SPLICE_F_MOVE)
1074 const_iv (SPLICE_F_NONBLOCK) 1220 const_iv (SPLICE_F_NONBLOCK)
1075 const_iv (SPLICE_F_MORE) 1221 const_iv (SPLICE_F_MORE)
1076 const_iv (SPLICE_F_GIFT) 1222 const_iv (SPLICE_F_GIFT)
1077 1223
1224 const_iv (EFD_CLOEXEC)
1225 const_iv (EFD_NONBLOCK)
1226 const_iv (EFD_SEMAPHORE)
1227
1228 const_iv (CLOCK_REALTIME)
1229 const_iv (CLOCK_MONOTONIC)
1230 const_iv (CLOCK_BOOTTIME)
1231 const_iv (CLOCK_REALTIME_ALARM)
1232 const_iv (CLOCK_BOOTTIME_ALARM)
1233
1234 const_iv (TFD_NONBLOCK)
1235 const_iv (TFD_CLOEXEC)
1236
1237 const_iv (TFD_TIMER_ABSTIME)
1238 const_iv (TFD_TIMER_CANCEL_ON_SET)
1239
1078 /* these are libeio constants, and are independent of gendef0 */ 1240 /* these are libeio constants, and are independent of gendef0 */
1079 const_eio (SEEK_SET) 1241 const_eio (SEEK_SET)
1080 const_eio (SEEK_CUR) 1242 const_eio (SEEK_CUR)
1081 const_eio (SEEK_END) 1243 const_eio (SEEK_END)
1082 1244
… …
1095 1257
1096 const_eio (FALLOC_FL_KEEP_SIZE) 1258 const_eio (FALLOC_FL_KEEP_SIZE)
1097 const_eio (FALLOC_FL_PUNCH_HOLE) 1259 const_eio (FALLOC_FL_PUNCH_HOLE)
1098 const_eio (FALLOC_FL_COLLAPSE_RANGE) 1260 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1099 const_eio (FALLOC_FL_ZERO_RANGE) 1261 const_eio (FALLOC_FL_ZERO_RANGE)
1262 const_eio (FALLOC_FL_INSERT_RANGE)
1263 const_eio (FALLOC_FL_UNSHARE_RANGE)
1264
1265 const_eio (RENAME_NOREPLACE)
1266 const_eio (RENAME_EXCHANGE)
1267 const_eio (RENAME_WHITEOUT)
1100 1268
1101 const_eio (READDIR_DENTS) 1269 const_eio (READDIR_DENTS)
1102 const_eio (READDIR_DIRS_FIRST) 1270 const_eio (READDIR_DIRS_FIRST)
1103 const_eio (READDIR_STAT_ORDER) 1271 const_eio (READDIR_STAT_ORDER)
1104 const_eio (READDIR_FOUND_UNKNOWN) 1272 const_eio (READDIR_FOUND_UNKNOWN)
… …
1459 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path); 1627 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1460 1628
1461 REQ_SEND; 1629 REQ_SEND;
1462} 1630}
1463 1631
1632void
1633stat_xtime ()
1634 ALIAS:
1635 stat_atime = 1
1636 stat_mtime = 2
1637 stat_ctime = 4
1638 stat_xtime = 7
1639 PPCODE:
1640 EXTEND (SP, 3);
1641 if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1642 if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1643 if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1644
1645void
1646stat_xtimensec ()
1647 ALIAS:
1648 stat_atimensec = 1
1649 stat_mtimensec = 2
1650 stat_ctimensec = 4
1651 stat_xtimensec = 7
1652 PPCODE:
1653 EXTEND (SP, 3);
1654 if (ix & 1) PUSHs (newSViv (ATIMENSEC));
1655 if (ix & 2) PUSHs (newSViv (MTIMENSEC));
1656 if (ix & 4) PUSHs (newSViv (CTIMENSEC));
1657
1464UV 1658UV
1465major (UV dev) 1659major (UV dev)
1466 ALIAS: 1660 ALIAS:
1467 minor = 1 1661 minor = 1
1468 CODE: 1662 CODE:
… …
1591 1785
1592 REQ_SEND; 1786 REQ_SEND;
1593} 1787}
1594 1788
1595void 1789void
1790aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1791 PPCODE:
1792{
1793 eio_wd wd2 = 0;
1794 dREQ;
1795
1796 req->type = EIO_RENAME;
1797 req_set_path1 (req, oldpath);
1798 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1799 req->int2 = flags;
1800 req->int3 = (long)wd2;
1801
1802 REQ_SEND;
1803}
1804
1805void
1596aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef) 1806aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1597 PPCODE: 1807 PPCODE:
1598{ 1808{
1599 dREQ; 1809 dREQ;
1600 1810
… …
1702 req->int2 = flags; 1912 req->int2 = flags;
1703 req->int3 = SvOK (count) ? SvIV (count) : -1; 1913 req->int3 = SvOK (count) ? SvIV (count) : -1;
1704#endif 1914#endif
1705 1915
1706 REQ_SEND; 1916 REQ_SEND;
1917}
1918
1919void
1920aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1921 PPCODE:
1922{
1923 char *svptr = 0;
1924
1925 sv_clear_foreign (data);
1926
1927 if (length) /* known length, directly read into scalar */
1928 {
1929 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1930 svptr = sv_grow (data, length + 1);
1931 else if (SvCUR (data) < length)
1932 croak ("length outside of scalar, and cannot grow");
1933 else
1934 svptr = SvPVbyte_nolen (data);
1935 }
1936
1937 {
1938 dREQ;
1939
1940 req->type = EIO_SLURP;
1941 req_set_path1 (req, pathname);
1942 req->offs = offset;
1943 req->size = length;
1944 req->sv2 = SvREFCNT_inc (data);
1945 req->ptr2 = svptr;
1946
1947 if (!SvREADONLY (data))
1948 {
1949 SvREADONLY_on (data);
1950 req->flags |= FLAG_SV2_RO_OFF;
1951 }
1952
1953 REQ_SEND;
1954 }
1707} 1955}
1708 1956
1709void 1957void
1710aio_busy (double delay, SV *callback = &PL_sv_undef) 1958aio_busy (double delay, SV *callback = &PL_sv_undef)
1711 PPCODE: 1959 PPCODE:
… …
1848 RETVAL 2096 RETVAL
1849 2097
1850void 2098void
1851mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0) 2099mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1852 PPCODE: 2100 PPCODE:
1853 sv_unmagic (scalar, MMAP_MAGIC); 2101 sv_clear_foreign (scalar);
1854{ 2102{
1855 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1; 2103 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1856 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 2104 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1857 if (addr == (void *)-1) 2105 if (addr == (void *)-1)
1858 XSRETURN_NO; 2106 XSRETURN_NO;
1859 2107
1860 sv_force_normal (scalar); 2108 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
1861
1862 /* we store the length in mg_obj, as namlen is I32 :/ */
1863 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1864 ->mg_obj = (SV *)length;
1865
1866 SvUPGRADE (scalar, SVt_PV); /* nop... */
1867 2109
1868 if (!(prot & PROT_WRITE)) 2110 if (!(prot & PROT_WRITE))
1869 SvREADONLY_on (scalar); 2111 SvREADONLY_on (scalar);
1870 2112
1871 if (SvLEN (scalar))
1872 Safefree (SvPVX (scalar));
1873
1874 SvPVX (scalar) = (char *)addr;
1875 SvCUR_set (scalar, length);
1876 SvLEN_set (scalar, 0);
1877 SvPOK_only (scalar);
1878
1879 XSRETURN_YES; 2113 XSRETURN_YES;
1880} 2114}
1881 2115
1882void 2116void
1883munmap (SV *scalar) 2117munmap (SV *scalar)
1884 CODE: 2118 CODE:
1885 sv_unmagic (scalar, MMAP_MAGIC); 2119 sv_clear_foreign (scalar);
2120
2121SV *
2122mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2123 CODE:
2124{
2125 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2126 void *new;
2127
2128 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2129 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2130
2131 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2132
2133 RETVAL = &PL_sv_no;
2134
2135 if (new != (void *)-1)
2136 {
2137 RETVAL = new == (void *)mg->mg_ptr
2138 ? newSVpvn ("0 but true", 10)
2139 : &PL_sv_yes;
2140
2141 mg->mg_ptr = (char *)new;
2142 mg->mg_obj = (SV *)new_length;
2143
2144 SvPVX (scalar) = mg->mg_ptr;
2145 SvCUR_set (scalar, new_length);
2146 }
2147}
2148 OUTPUT:
2149 RETVAL
1886 2150
1887int 2151int
1888madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot) 2152madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1889 ALIAS: 2153 ALIAS:
1890 mprotect = 1 2154 mprotect = 1
… …
2020 { 2284 {
2021 EXTEND (SP, 2); 2285 EXTEND (SP, 2);
2022 PUSHs (newmortalFH (fd[0], O_RDONLY)); 2286 PUSHs (newmortalFH (fd[0], O_RDONLY));
2023 PUSHs (newmortalFH (fd[1], O_WRONLY)); 2287 PUSHs (newmortalFH (fd[1], O_WRONLY));
2024 } 2288 }
2289}
2290
2291void
2292eventfd (unsigned int initval = 0, int flags = 0)
2293 PPCODE:
2294{
2295 int fd;
2296#if HAVE_EVENTFD
2297 fd = eventfd (initval, flags);
2298#else
2299 fd = (errno = ENOSYS, -1);
2300#endif
2301
2302 XPUSHs (newmortalFH (fd, O_RDWR));
2303}
2304
2305void
2306timerfd_create (int clockid, int flags = 0)
2307 PPCODE:
2308{
2309 int fd;
2310#if HAVE_TIMERFD
2311 fd = timerfd_create (clockid, flags);
2312#else
2313 fd = (errno = ENOSYS, -1);
2314#endif
2315
2316 XPUSHs (newmortalFH (fd, O_RDWR));
2317}
2318
2319void
2320timerfd_settime (SV *fh, int flags, NV interval, NV value)
2321 PPCODE:
2322{
2323 int fd = s_fileno_croak (fh, 0);
2324#if HAVE_TIMERFD
2325 int res;
2326 struct itimerspec its, ots;
2327
2328 ts_set (&its.it_interval, interval);
2329 ts_set (&its.it_value , value);
2330 res = timerfd_settime (fd, flags, &its, &ots);
2331
2332 if (!res)
2333 {
2334 EXTEND (SP, 2);
2335 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2336 PUSHs (newSVnv (ts_get (&ots.it_value)));
2337 }
2338#else
2339 errno = ENOSYS;
2340#endif
2341}
2342
2343void
2344timerfd_gettime (SV *fh)
2345 PPCODE:
2346{
2347 int fd = s_fileno_croak (fh, 0);
2348#if HAVE_TIMERFD
2349 int res;
2350 struct itimerspec ots;
2351 res = timerfd_gettime (fd, &ots);
2352
2353 if (!res)
2354 {
2355 EXTEND (SP, 2);
2356 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2357 PUSHs (newSVnv (ts_get (&ots.it_value)));
2358 }
2359#else
2360 errno = ENOSYS;
2361#endif
2362}
2363
2364UV
2365get_fdlimit ()
2366 CODE:
2367#if HAVE_RLIMITS
2368 struct rlimit rl;
2369 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2370 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2371#endif
2372 XSRETURN_UNDEF;
2373 OUTPUT:
2374 RETVAL
2375
2376void
2377min_fdlimit (UV limit = 0x7fffffffU)
2378 CODE:
2379{
2380#if HAVE_RLIMITS
2381 struct rlimit rl;
2382 rlim_t orig_rlim_max;
2383 UV bit;
2384
2385 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2386 goto fail;
2387
2388 if (rl.rlim_cur == RLIM_INFINITY)
2389 XSRETURN_YES;
2390
2391 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2392
2393 if (rl.rlim_cur < limit)
2394 {
2395 rl.rlim_cur = limit;
2396
2397 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2398 rl.rlim_max = rl.rlim_cur;
2399 }
2400
2401 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2402 XSRETURN_YES;
2403
2404 if (errno == EPERM)
2405 {
2406 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2407 /* our limit overflows a system-wide limit */
2408 /* try an adaptive algorithm, but do not lower the hardlimit */
2409 rl.rlim_max = 0;
2410 for (bit = 0x40000000U; bit; bit >>= 1)
2411 {
2412 rl.rlim_max |= bit;
2413 rl.rlim_cur = rl.rlim_max;
2414
2415 /* nevr decrease the hard limit */
2416 if (rl.rlim_max < orig_rlim_max)
2417 break;
2418
2419 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2420 rl.rlim_max &= ~bit; /* too high, remove bit again */
2421 }
2422
2423 /* now, raise the soft limit to the max permitted */
2424 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2425 {
2426 rl.rlim_cur = rl.rlim_max;
2427 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2428 errno = EPERM;
2429 }
2430 }
2431#endif
2432 fail:
2433 XSRETURN_UNDEF;
2025} 2434}
2026 2435
2027void _on_next_submit (SV *cb) 2436void _on_next_submit (SV *cb)
2028 CODE: 2437 CODE:
2029 SvREFCNT_dec (on_next_submit); 2438 SvREFCNT_dec (on_next_submit);

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