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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.245 by root, Fri Jun 23 03:23:19 2017 UTC vs.
Revision 1.258 by root, Wed Jul 18 00:57:55 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>
… …
104#define expect_false(expr) expect ((expr) != 0, 0) 106#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1) 107#define expect_true(expr) expect ((expr) != 0, 1)
106 108
107/*****************************************************************************/ 109/*****************************************************************************/
108 110
111#include "libeio/config.h"
112
113#include "schmorp.h"
114
115#if HAVE_EVENTFD
116# include <sys/eventfd.h>
117#endif
118
119#if HAVE_TIMERFD
120# include <sys/timerfd.h>
121#endif
122
123#if HAVE_RLIMITS
124 #include <sys/time.h>
125 #include <sys/resource.h>
126#endif
127
109typedef SV SV8; /* byte-sv, used for argument-checking */ 128typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */ 129typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */ 130typedef int aio_wfd; /* write file descriptor */
112 131
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash; 132static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
… …
119 STRLEN stroffset; \ 138 STRLEN stroffset; \
120 SV *self; 139 SV *self;
121 140
122#define EIO_NO_WRAPPERS 1 141#define EIO_NO_WRAPPERS 1
123 142
124#include "libeio/config.h"
125#include "libeio/eio.h" 143#include "libeio/eio.h"
126 144
127static int req_invoke (eio_req *req); 145static int req_invoke (eio_req *req);
128#define EIO_FINISH(req) req_invoke (req) 146#define EIO_FINISH(req) req_invoke (req)
129static void req_destroy (eio_req *grp); 147static void req_destroy (eio_req *grp);
… …
162#endif 180#endif
163 181
164#if PAGESIZE <= 0 182#if PAGESIZE <= 0
165# define PAGESIZE sysconf (_SC_PAGESIZE) 183# define PAGESIZE sysconf (_SC_PAGESIZE)
166#endif 184#endif
185
186/*****************************************************************************/
187
188#if !_POSIX_MAPPED_FILES
189# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
190# define munmap(addr,length) EIO_ENOSYS ()
191#endif
192
193#if !_POSIX_MEMORY_PROTECTION
194# define mprotect(addr,len,prot) EIO_ENOSYS ()
195#endif
196
197#if !MREMAP_MAYMOVE
198# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
199#endif
200
201#define FOREIGN_MAGIC PERL_MAGIC_ext
202
203static int ecb_cold
204mmap_free (pTHX_ SV *sv, MAGIC *mg)
205{
206 int old_errno = errno;
207 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
208 errno = old_errno;
209
210 mg->mg_obj = 0; /* just in case */
211
212 SvREADONLY_off (sv);
213
214 if (SvPVX (sv) != mg->mg_ptr)
215 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
216
217 SvCUR_set (sv, 0);
218 SvPVX (sv) = 0;
219 SvOK_off (sv);
220
221 return 0;
222}
223
224static MGVTBL mmap_vtbl = {
225 0, 0, 0, 0, mmap_free
226};
227
228static int ecb_cold
229sysfree_free (pTHX_ SV *sv, MAGIC *mg)
230{
231 free (mg->mg_ptr);
232 mg->mg_obj = 0; /* just in case */
233
234 SvREADONLY_off (sv);
235
236 if (SvPVX (sv) != mg->mg_ptr)
237 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
238
239 SvCUR_set (sv, 0);
240 SvPVX (sv) = 0;
241 SvOK_off (sv);
242
243 return 0;
244}
245
246static MGVTBL sysfree_vtbl = {
247 0, 0, 0, 0, sysfree_free
248};
249
250/*****************************************************************************/
251
252/* helper: set scalar to foreign ptr with custom free */
253static void
254sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
255{
256 sv_force_normal (sv);
257
258 /* we store the length in mg_obj, as namlen is I32 :/ */
259 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
260 ->mg_obj = (SV *)length;
261
262 SvUPGRADE (sv, SVt_PV); /* nop... */
263
264 if (SvLEN (sv))
265 Safefree (SvPVX (sv));
266
267 SvPVX (sv) = (char *)addr;
268 SvCUR_set (sv, length);
269 SvLEN_set (sv, 0);
270 SvPOK_only (sv);
271}
272
273static void
274sv_clear_foreign (SV *sv)
275{
276 /* todo: iterate over magic and only free ours, but of course */
277 /* the perl5porters will call that (correct) behaviour buggy */
278 sv_unmagic (sv, FOREIGN_MAGIC);
279}
167 280
168/*****************************************************************************/ 281/*****************************************************************************/
169 282
170static void 283static void
171fiemap (eio_req *req) 284fiemap (eio_req *req)
… …
591 SvSETMAGIC (req->sv2); 704 SvSETMAGIC (req->sv2);
592 PUSHs (sv_result); 705 PUSHs (sv_result);
593 } 706 }
594 break; 707 break;
595 708
709 case EIO_SLURP:
710 {
711 if (req->result >= 0)
712 {
713 /* if length was originally not known, we steal the malloc'ed memory */
714 if (req->flags & EIO_FLAG_PTR2_FREE)
715 {
716 req->flags &= ~EIO_FLAG_PTR2_FREE;
717 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
718 }
719 else
720 {
721 SvCUR_set (req->sv2, req->result);
722 *SvEND (req->sv2) = 0;
723 SvPOK_only (req->sv2);
724 }
725
726 SvSETMAGIC (req->sv2);
727 }
728
729 PUSHs (sv_result);
730 }
731 break;
732
596 case EIO_CUSTOM: 733 case EIO_CUSTOM:
597 if (req->feed == fiemap) 734 if (req->feed == fiemap)
598 { 735 {
599#if HAVE_FIEMAP 736#if HAVE_FIEMAP
600 if (!req->result) 737 if (!req->result)
… …
743 create_respipe (); 880 create_respipe ();
744 881
745 if (eio_init (want_poll, done_poll) < 0) 882 if (eio_init (want_poll, done_poll) < 0)
746 croak ("IO::AIO: unable to initialise eio library"); 883 croak ("IO::AIO: unable to initialise eio library");
747} 884}
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};
786 885
787/*****************************************************************************/ 886/*****************************************************************************/
788 887
789static SV * 888static SV *
790get_cb (SV *cb_sv) 889get_cb (SV *cb_sv)
… …
886 req_set_path1 (req, fh_or_path); 985 req_set_path1 (req, fh_or_path);
887 break; 986 break;
888 } 987 }
889} 988}
890 989
990/*****************************************************************************/
991
992static void
993ts_set (struct timespec *ts, NV value)
994{
995 ts->tv_sec = value;
996 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
997}
998
999static NV
1000ts_get (const struct timespec *ts)
1001{
1002 return ts->tv_sec + ts->tv_nsec * 1e-9;
1003}
1004
1005/*****************************************************************************/
1006
891XS(boot_IO__AIO) ecb_cold; 1007XS(boot_IO__AIO) ecb_cold;
892 1008
893MODULE = IO::AIO PACKAGE = IO::AIO 1009MODULE = IO::AIO PACKAGE = IO::AIO
894 1010
895PROTOTYPES: ENABLE 1011PROTOTYPES: ENABLE
… …
924 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL) 1040 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
925 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL) 1041 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
926 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM) 1042 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
927 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED) 1043 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
928 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED) 1044 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
929 const_niv (MADV_FREE , POSIX_MADV_FREE)
930 1045
931 /* the second block will be 0 when missing */ 1046 /* the second block will be 0 when missing */
932 const_iv (O_RDONLY) 1047 const_iv (O_RDONLY)
933 const_iv (O_WRONLY) 1048 const_iv (O_WRONLY)
934 const_iv (O_RDWR) 1049 const_iv (O_RDWR)
… …
995 const_iv (MAP_NONBLOCK) 1110 const_iv (MAP_NONBLOCK)
996 const_iv (MAP_GROWSDOWN) 1111 const_iv (MAP_GROWSDOWN)
997 const_iv (MAP_32BIT) 1112 const_iv (MAP_32BIT)
998 const_iv (MAP_HUGETLB) 1113 const_iv (MAP_HUGETLB)
999 const_iv (MAP_STACK) 1114 const_iv (MAP_STACK)
1115
1116 const_iv (MREMAP_MAYMOVE)
1117 const_iv (MREMAP_FIXED)
1118
1119 const_iv (F_DUPFD_CLOEXEC)
1120
1121 const_iv (F_OFD_GETLK)
1122 const_iv (F_OFD_SETLK)
1123 const_iv (F_OFD_GETLKW)
1000 1124
1001 const_iv (FIFREEZE) 1125 const_iv (FIFREEZE)
1002 const_iv (FITHAW) 1126 const_iv (FITHAW)
1003 const_iv (FITRIM) 1127 const_iv (FITRIM)
1004 const_iv (FICLONE) 1128 const_iv (FICLONE)
… …
1073 const_iv (SPLICE_F_MOVE) 1197 const_iv (SPLICE_F_MOVE)
1074 const_iv (SPLICE_F_NONBLOCK) 1198 const_iv (SPLICE_F_NONBLOCK)
1075 const_iv (SPLICE_F_MORE) 1199 const_iv (SPLICE_F_MORE)
1076 const_iv (SPLICE_F_GIFT) 1200 const_iv (SPLICE_F_GIFT)
1077 1201
1202 const_iv (EFD_CLOEXEC)
1203 const_iv (EFD_NONBLOCK)
1204 const_iv (EFD_SEMAPHORE)
1205
1206 const_iv (CLOCK_REALTIME)
1207 const_iv (CLOCK_MONOTONIC)
1208 const_iv (CLOCK_BOOTTIME)
1209 const_iv (CLOCK_REALTIME_ALARM)
1210 const_iv (CLOCK_BOOTTIME_ALARM)
1211
1212 const_iv (TFD_NONBLOCK)
1213 const_iv (TFD_CLOEXEC)
1214
1215 const_iv (TFD_TIMER_ABSTIME)
1216 const_iv (TFD_TIMER_CANCEL_ON_SET)
1217
1078 /* these are libeio constants, and are independent of gendef0 */ 1218 /* these are libeio constants, and are independent of gendef0 */
1079 const_eio (SEEK_SET) 1219 const_eio (SEEK_SET)
1080 const_eio (SEEK_CUR) 1220 const_eio (SEEK_CUR)
1081 const_eio (SEEK_END) 1221 const_eio (SEEK_END)
1082 1222
… …
1095 1235
1096 const_eio (FALLOC_FL_KEEP_SIZE) 1236 const_eio (FALLOC_FL_KEEP_SIZE)
1097 const_eio (FALLOC_FL_PUNCH_HOLE) 1237 const_eio (FALLOC_FL_PUNCH_HOLE)
1098 const_eio (FALLOC_FL_COLLAPSE_RANGE) 1238 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1099 const_eio (FALLOC_FL_ZERO_RANGE) 1239 const_eio (FALLOC_FL_ZERO_RANGE)
1240 const_eio (FALLOC_FL_INSERT_RANGE)
1241 const_eio (FALLOC_FL_UNSHARE_RANGE)
1100 1242
1101 const_eio (RENAME_NOREPLACE) 1243 const_eio (RENAME_NOREPLACE)
1102 const_eio (RENAME_EXCHANGE) 1244 const_eio (RENAME_EXCHANGE)
1103 const_eio (RENAME_WHITEOUT) 1245 const_eio (RENAME_WHITEOUT)
1104 1246
… …
1725 1867
1726 REQ_SEND; 1868 REQ_SEND;
1727} 1869}
1728 1870
1729void 1871void
1872aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1873 PPCODE:
1874{
1875 char *svptr = 0;
1876
1877 sv_clear_foreign (data);
1878
1879 if (length) /* known length, directly read into scalar */
1880 {
1881 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1882 svptr = sv_grow (data, length + 1);
1883 else if (SvCUR (data) < length)
1884 croak ("length outside of scalar, and cannot grow");
1885 else
1886 svptr = SvPVbyte_nolen (data);
1887 }
1888
1889 {
1890 dREQ;
1891
1892 req->type = EIO_SLURP;
1893 req_set_path1 (req, pathname);
1894 req->offs = offset;
1895 req->size = length;
1896 req->sv2 = SvREFCNT_inc (data);
1897 req->ptr2 = svptr;
1898
1899 if (!SvREADONLY (data))
1900 {
1901 SvREADONLY_on (data);
1902 req->flags |= FLAG_SV2_RO_OFF;
1903 }
1904
1905 REQ_SEND;
1906 }
1907}
1908
1909void
1730aio_busy (double delay, SV *callback = &PL_sv_undef) 1910aio_busy (double delay, SV *callback = &PL_sv_undef)
1731 PPCODE: 1911 PPCODE:
1732{ 1912{
1733 dREQ; 1913 dREQ;
1734 1914
… …
1868 RETVAL 2048 RETVAL
1869 2049
1870void 2050void
1871mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0) 2051mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1872 PPCODE: 2052 PPCODE:
1873 sv_unmagic (scalar, MMAP_MAGIC); 2053 sv_clear_foreign (scalar);
1874{ 2054{
1875 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1; 2055 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1876 void *addr = (void *)mmap (0, length, prot, flags, fd, offset); 2056 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1877 if (addr == (void *)-1) 2057 if (addr == (void *)-1)
1878 XSRETURN_NO; 2058 XSRETURN_NO;
1879 2059
1880 sv_force_normal (scalar); 2060 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
1881
1882 /* we store the length in mg_obj, as namlen is I32 :/ */
1883 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1884 ->mg_obj = (SV *)length;
1885
1886 SvUPGRADE (scalar, SVt_PV); /* nop... */
1887 2061
1888 if (!(prot & PROT_WRITE)) 2062 if (!(prot & PROT_WRITE))
1889 SvREADONLY_on (scalar); 2063 SvREADONLY_on (scalar);
1890 2064
1891 if (SvLEN (scalar))
1892 Safefree (SvPVX (scalar));
1893
1894 SvPVX (scalar) = (char *)addr;
1895 SvCUR_set (scalar, length);
1896 SvLEN_set (scalar, 0);
1897 SvPOK_only (scalar);
1898
1899 XSRETURN_YES; 2065 XSRETURN_YES;
1900} 2066}
1901 2067
1902void 2068void
1903munmap (SV *scalar) 2069munmap (SV *scalar)
1904 CODE: 2070 CODE:
1905 sv_unmagic (scalar, MMAP_MAGIC); 2071 sv_clear_foreign (scalar);
2072
2073SV *
2074mremap (SV *scalar, STRLEN new_length, int flags = 0, IV new_address = 0)
2075 CODE:
2076{
2077 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2078 void *new;
2079
2080 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2081 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2082
2083 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2084
2085 RETVAL = &PL_sv_no;
2086
2087 if (new != (void *)-1)
2088 {
2089 RETVAL = new == (void *)mg->mg_ptr
2090 ? newSVpvn ("0 but true", 10)
2091 : &PL_sv_yes;
2092
2093 mg->mg_ptr = (char *)new;
2094 mg->mg_obj = (SV *)new_length;
2095
2096 SvPVX (scalar) = mg->mg_ptr;
2097 SvCUR_set (scalar, new_length);
2098 }
2099}
2100 OUTPUT:
2101 RETVAL
1906 2102
1907int 2103int
1908madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot) 2104madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1909 ALIAS: 2105 ALIAS:
1910 mprotect = 1 2106 mprotect = 1
… …
2040 { 2236 {
2041 EXTEND (SP, 2); 2237 EXTEND (SP, 2);
2042 PUSHs (newmortalFH (fd[0], O_RDONLY)); 2238 PUSHs (newmortalFH (fd[0], O_RDONLY));
2043 PUSHs (newmortalFH (fd[1], O_WRONLY)); 2239 PUSHs (newmortalFH (fd[1], O_WRONLY));
2044 } 2240 }
2241}
2242
2243void
2244eventfd (unsigned int initval = 0, int flags = 0)
2245 PPCODE:
2246{
2247 int fd;
2248#if HAVE_EVENTFD
2249 fd = eventfd (initval, flags);
2250#else
2251 fd = (errno = ENOSYS, -1);
2252#endif
2253
2254 XPUSHs (newmortalFH (fd, O_RDWR));
2255}
2256
2257void
2258timerfd_create (int clockid, int flags = 0)
2259 PPCODE:
2260{
2261 int fd;
2262#if HAVE_TIMERFD
2263 fd = timerfd_create (clockid, flags);
2264#else
2265 fd = (errno = ENOSYS, -1);
2266#endif
2267
2268 XPUSHs (newmortalFH (fd, O_RDWR));
2269}
2270
2271void
2272timerfd_settime (SV *fh, int flags, NV interval, NV value)
2273 PPCODE:
2274{
2275 int fd = s_fileno_croak (fh, 0);
2276#if HAVE_TIMERFD
2277 int res;
2278 struct itimerspec its, ots;
2279
2280 ts_set (&its.it_interval, interval);
2281 ts_set (&its.it_value , value);
2282 res = timerfd_settime (fd, flags, &its, &ots);
2283
2284 if (!res)
2285 {
2286 EXTEND (SP, 2);
2287 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2288 PUSHs (newSVnv (ts_get (&ots.it_value)));
2289 }
2290#else
2291 errno = ENOSYS;
2292#endif
2293}
2294
2295void
2296timerfd_gettime (SV *fh)
2297 PPCODE:
2298{
2299 int fd = s_fileno_croak (fh, 0);
2300#if HAVE_TIMERFD
2301 int res;
2302 struct itimerspec ots;
2303 res = timerfd_gettime (fd, &ots);
2304
2305 if (!res)
2306 {
2307 EXTEND (SP, 2);
2308 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2309 PUSHs (newSVnv (ts_get (&ots.it_value)));
2310 }
2311#else
2312 errno = ENOSYS;
2313#endif
2314}
2315
2316UV
2317get_fdlimit ()
2318 CODE:
2319#if HAVE_RLIMITS
2320 struct rlimit rl;
2321 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2322 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2323#endif
2324 XSRETURN_UNDEF;
2325 OUTPUT:
2326 RETVAL
2327
2328void
2329min_fdlimit (UV limit = 0x7fffffffU)
2330 CODE:
2331{
2332#if HAVE_RLIMITS
2333 struct rlimit rl;
2334 rlim_t orig_rlim_max;
2335 UV bit;
2336
2337 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2338 goto fail;
2339
2340 if (rl.rlim_cur == RLIM_INFINITY)
2341 XSRETURN_YES;
2342
2343 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2344
2345 if (rl.rlim_cur < limit)
2346 {
2347 rl.rlim_cur = limit;
2348
2349 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2350 rl.rlim_max = rl.rlim_cur;
2351 }
2352
2353 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2354 XSRETURN_YES;
2355
2356 if (errno == EPERM)
2357 {
2358 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2359 /* our limit overflows a system-wide limit */
2360 /* try an adaptive algorithm, but do not lower the hardlimit */
2361 rl.rlim_max = 0;
2362 for (bit = 0x40000000U; bit; bit >>= 1)
2363 {
2364 rl.rlim_max |= bit;
2365 rl.rlim_cur = rl.rlim_max;
2366
2367 /* nevr decrease the hard limit */
2368 if (rl.rlim_max < orig_rlim_max)
2369 break;
2370
2371 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2372 rl.rlim_max &= ~bit; /* too high, remove bit again */
2373 }
2374
2375 /* now, raise the soft limit to the max permitted */
2376 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2377 {
2378 rl.rlim_cur = rl.rlim_max;
2379 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2380 errno = EPERM;
2381 }
2382 }
2383#endif
2384 fail:
2385 XSRETURN_UNDEF;
2045} 2386}
2046 2387
2047void _on_next_submit (SV *cb) 2388void _on_next_submit (SV *cb)
2048 CODE: 2389 CODE:
2049 SvREFCNT_dec (on_next_submit); 2390 SvREFCNT_dec (on_next_submit);

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