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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.254 by root, Tue Feb 20 05:23:47 2018 UTC vs.
Revision 1.286 by root, Tue Dec 29 15:25:26 2020 UTC

… …
3#include <errno.h> 3#include <errno.h>
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#include "perliol.h"
8 9
9#include "schmorp.h" 10#if !defined mg_findext
11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
12#endif
10 13
11#include <stddef.h> 14#include <stddef.h>
12#include <stdlib.h> 15#include <stdlib.h>
13#include <errno.h> 16#include <errno.h>
14#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
15#include <sys/stat.h> 19#include <sys/stat.h>
16#include <limits.h> 20#include <limits.h>
17#include <fcntl.h> 21#include <fcntl.h>
18#include <sched.h> 22#include <sched.h>
19
20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23 23
24/* the incompetent fool that created musl keeps __linux__, refuses 24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test 25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails 26 * for his broken iplementation. don't complain to me if this fails
27 * for you. 27 * for you.
… …
75 #undef fchmod 75 #undef fchmod
76 #undef dup 76 #undef dup
77 #undef dup2 77 #undef dup2
78 #undef abort 78 #undef abort
79 #undef pipe 79 #undef pipe
80 #undef utime
80 81
81 #define EIO_STRUCT_STAT struct _stati64 82 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64 83 #define EIO_STRUCT_STATI64
83 84
84#else 85#else
… …
104#define expect_false(expr) expect ((expr) != 0, 0) 105#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1) 106#define expect_true(expr) expect ((expr) != 0, 1)
106 107
107/*****************************************************************************/ 108/*****************************************************************************/
108 109
109#include "libeio/config.h" 110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
119# include <sys/mman.h>
120#endif
121
122#if HAVE_SYS_UIO_H
123# include <sys/uio.h>
124#endif
125
126#if HAVE_ST_XTIMENSEC
127# define ATIMENSEC PL_statcache.st_atimensec
128# define MTIMENSEC PL_statcache.st_mtimensec
129# define CTIMENSEC PL_statcache.st_ctimensec
130#elif HAVE_ST_XTIMESPEC
131# define ATIMENSEC PL_statcache.st_atim.tv_nsec
132# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
133# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
134#else
135# define ATIMENSEC 0
136# define MTIMENSEC 0
137# define CTIMENSEC 0
138#endif
139
140#if HAVE_ST_BIRTHTIMENSEC
141# define BTIMESEC PL_statcache.st_birthtime
142# define BTIMENSEC PL_statcache.st_birthtimensec
143#elif HAVE_ST_BIRTHTIMESPEC
144# define BTIMESEC PL_statcache.st_birthtim.tv_sec
145# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
146#else
147# define BTIMESEC 0
148# define BTIMENSEC 0
149#endif
150
151#if HAVE_ST_GEN
152# define ST_GEN PL_statcache.st_gen
153#else
154# define ST_GEN 0
155#endif
156
157#include "schmorp.h"
110 158
111#if HAVE_EVENTFD 159#if HAVE_EVENTFD
112# include <sys/eventfd.h> 160# include <sys/eventfd.h>
113#endif 161#endif
114 162
… …
159# else 207# else
160# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */ 208# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
161# endif 209# endif
162#endif 210#endif
163 211
164/* defines all sorts of constants to 0 unless they are already defined */
165/* also provides const_iv_ and const_niv_ macros for them */
166#include "def0.h"
167
168#ifndef makedev 212#ifndef makedev
169# define makedev(maj,min) (((maj) << 8) | (min)) 213# define makedev(maj,min) (((maj) << 8) | (min))
170#endif 214#endif
171#ifndef major 215#ifndef major
172# define major(dev) ((dev) >> 8) 216# define major(dev) ((dev) >> 8)
173#endif 217#endif
174#ifndef minor 218#ifndef minor
175# define minor(dev) ((dev) & 0xff) 219# define minor(dev) ((dev) & 0xff)
176#endif 220#endif
177 221
222/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
223#ifdef __sun
224# undef PAGESIZE
225#endif
226
178#if PAGESIZE <= 0 227#if PAGESIZE <= 0
179# define PAGESIZE sysconf (_SC_PAGESIZE) 228# define PAGESIZE sysconf (_SC_PAGESIZE)
180#endif 229#endif
181 230
231#if HAVE_SYSCALL
232#include <sys/syscall.h>
233#else
234# define syscall(nr,...) (errno = ENOSYS, -1)
235#endif
236
182/*****************************************************************************/ 237/*****************************************************************************/
183 238
184#if !_POSIX_MAPPED_FILES 239#if !_POSIX_MAPPED_FILES
185# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS () 240# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
186# define munmap(addr,length) EIO_ENOSYS () 241# define munmap(addr,length) EIO_ENOSYS ()
187#endif 242#endif
188 243
189#if !_POSIX_MEMORY_PROTECTION 244#if !_POSIX_MEMORY_PROTECTION
190# define mprotect(addr,len,prot) EIO_ENOSYS () 245# define mprotect(addr,len,prot) EIO_ENOSYS ()
246#endif
247
248#if !MREMAP_MAYMOVE
249# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
191#endif 250#endif
192 251
193#define FOREIGN_MAGIC PERL_MAGIC_ext 252#define FOREIGN_MAGIC PERL_MAGIC_ext
194 253
195static int ecb_cold 254static int ecb_cold
… …
240}; 299};
241 300
242/*****************************************************************************/ 301/*****************************************************************************/
243 302
244/* helper: set scalar to foreign ptr with custom free */ 303/* helper: set scalar to foreign ptr with custom free */
304ecb_noinline
245static void 305static void
246sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length) 306sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
247{ 307{
248 sv_force_normal (sv); 308 sv_force_normal (sv);
249 309
… …
267{ 327{
268 /* todo: iterate over magic and only free ours, but of course */ 328 /* todo: iterate over magic and only free ours, but of course */
269 /* the perl5porters will call that (correct) behaviour buggy */ 329 /* the perl5porters will call that (correct) behaviour buggy */
270 sv_unmagic (sv, FOREIGN_MAGIC); 330 sv_unmagic (sv, FOREIGN_MAGIC);
271} 331}
332
333/*****************************************************************************/
334
335/* defines all sorts of constants to 0 unless they are already defined */
336/* also provides const_iv_ and const_niv_ macros for them */
337#include "def0.h"
272 338
273/*****************************************************************************/ 339/*****************************************************************************/
274 340
275static void 341static void
276fiemap (eio_req *req) 342fiemap (eio_req *req)
… …
284 int count = req->int3; 350 int count = req->int3;
285 351
286 req->flags |= EIO_FLAG_PTR1_FREE; 352 req->flags |= EIO_FLAG_PTR1_FREE;
287 353
288 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */ 354 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
289 /* increase in 3.5kb steps */ 355 /* increase in fixed steps */
290 if (count < 0) 356 if (count < 0)
291 count = 8; 357 count = 8;
292 358
293 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count); 359 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
294 errno = ENOMEM; 360 errno = ENOMEM;
… …
347 413
348 for (count = 0; count < incmap->fm_mapped_extents; ++count) 414 for (count = 0; count < incmap->fm_mapped_extents; ++count)
349 { 415 {
350 struct fiemap_extent *e = incmap->fm_extents + count; 416 struct fiemap_extent *e = incmap->fm_extents + count;
351 417
418 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
419
352 if (e->fe_logical + e->fe_length >= end_offset) 420 if (e->fe_logical >= end_offset)
353 goto done; 421 goto done;
354
355 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
356 422
357 if (e->fe_flags & FIEMAP_EXTENT_LAST) 423 if (e->fe_flags & FIEMAP_EXTENT_LAST)
358 goto done; 424 goto done;
359 425
360 } 426 }
… …
367 errno = ENOSYS; 433 errno = ENOSYS;
368#endif 434#endif
369} 435}
370 436
371/*****************************************************************************/ 437/*****************************************************************************/
438
439static int close_fd; /* dummy fd to close fds via dup2 */
440
441#if HAVE_STATX
442static struct statx stx;
443#define statx_offsetof(member) offsetof (struct statx, member)
444#define eio__statx statx
445#else
446#define statx_offsetof(member) 0
447#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
448#endif
372 449
373enum { 450enum {
374 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */ 451 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
375}; 452};
376 453
… …
400 /* read any signals sent by the worker threads */ 477 /* read any signals sent by the worker threads */
401 s_epipe_drain (&respipe); 478 s_epipe_drain (&respipe);
402} 479}
403 480
404/* must be called at most once */ 481/* must be called at most once */
482ecb_noinline
405static SV * 483static SV *
406req_sv (aio_req req, HV *stash) 484req_sv (aio_req req, HV *stash)
407{ 485{
408 if (!req->self) 486 if (!req->self)
409 { 487 {
… …
418newSVaio_wd (aio_wd wd) 496newSVaio_wd (aio_wd wd)
419{ 497{
420 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash); 498 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
421} 499}
422 500
501ecb_noinline
423static aio_req 502static aio_req
424SvAIO_REQ (SV *sv) 503SvAIO_REQ (SV *sv)
425{ 504{
426 MAGIC *mg; 505 MAGIC *mg;
427 506
… …
490 FREETMPS; 569 FREETMPS;
491 LEAVE; 570 LEAVE;
492 } 571 }
493} 572}
494 573
574ecb_noinline
495static void 575static void
496req_submit (eio_req *req) 576req_submit (eio_req *req)
497{ 577{
498 eio_submit (req); 578 eio_submit (req);
499 579
… …
760 } 840 }
761 else 841 else
762 PUSHs (sv_result); 842 PUSHs (sv_result);
763 break; 843 break;
764 844
845#if 0
846 case EIO_CLOSE:
847 PerlIOUnix_refcnt_dec (req->int1);
848 break;
849#endif
850
765 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */ 851 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
766 if (req->result > 0) 852 if (req->result > 0)
767 SvIV_set (sv_result, 0); 853 SvIV_set (sv_result, 0);
768 /* FALLTHROUGH */ 854 /* FALLTHROUGH */
769 855
… …
820 grp->sv2 = 0; 906 grp->sv2 = 0;
821 907
822 eio_grp_cancel (grp); 908 eio_grp_cancel (grp);
823} 909}
824 910
825static void ecb_cold 911ecb_cold
912static void
826create_respipe (void) 913create_respipe (void)
827{ 914{
828 if (s_epipe_renew (&respipe)) 915 if (s_epipe_renew (&respipe))
829 croak ("IO::AIO: unable to initialize result pipe"); 916 croak ("IO::AIO: unable to initialize result pipe");
830} 917}
… …
864 951
865 poll_wait (); 952 poll_wait ();
866 } 953 }
867} 954}
868 955
869static void ecb_cold 956ecb_cold
957static void
870reinit (void) 958reinit (void)
871{ 959{
872 create_respipe (); 960 create_respipe ();
873 961
874 if (eio_init (want_poll, done_poll) < 0) 962 if (eio_init (want_poll, done_poll) < 0)
… …
882{ 970{
883 SvGETMAGIC (cb_sv); 971 SvGETMAGIC (cb_sv);
884 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0; 972 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
885} 973}
886 974
975ecb_noinline
887static aio_req ecb_noinline 976static aio_req ecb_noinline
888dreq (SV *callback) 977dreq (SV *callback)
889{ 978{
890 SV *cb_cv; 979 SV *cb_cv;
891 aio_req req; 980 aio_req req;
… …
913 SPAGAIN; \ 1002 SPAGAIN; \
914 \ 1003 \
915 if (GIMME_V != G_VOID) \ 1004 if (GIMME_V != G_VOID) \
916 XPUSHs (req_sv (req, aio_req_stash)); 1005 XPUSHs (req_sv (req, aio_req_stash));
917 1006
1007/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
918ecb_inline void 1008ecb_inline
1009void
919req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr) 1010req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
920{ 1011{
921 if (expect_false (SvROK (path))) 1012 if (expect_false (SvROK (path)))
922 { 1013 {
923 SV *rv = SvRV (path); 1014 SV *rv = SvRV (path);
924 SV *wdob; 1015 SV *wdob;
… …
949 1040
950 *pathsv = newSVsv (path); 1041 *pathsv = newSVsv (path);
951 *ptr = SvPVbyte_nolen (*pathsv); 1042 *ptr = SvPVbyte_nolen (*pathsv);
952} 1043}
953 1044
954static void ecb_noinline 1045ecb_noinline
1046static void
955req_set_path1 (aio_req req, SV *path) 1047req_set_path1 (aio_req req, SV *path)
956{ 1048{
957 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1); 1049 req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
958} 1050}
959 1051
960static void ecb_noinline 1052ecb_noinline
1053static void
961req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path) 1054req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
962{ 1055{
963 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path; 1056 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
964 1057
965 switch (SvTYPE (rv)) 1058 switch (SvTYPE (rv))
… …
1034 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM) 1127 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1035 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED) 1128 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1036 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED) 1129 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1037 1130
1038 /* the second block will be 0 when missing */ 1131 /* the second block will be 0 when missing */
1132 const_iv (O_ACCMODE)
1133
1039 const_iv (O_RDONLY) 1134 const_iv (O_RDONLY)
1040 const_iv (O_WRONLY) 1135 const_iv (O_WRONLY)
1041 const_iv (O_RDWR) 1136 const_iv (O_RDWR)
1042 const_iv (O_CREAT) 1137 const_iv (O_CREAT)
1043 const_iv (O_TRUNC) 1138 const_iv (O_TRUNC)
… …
1103 const_iv (MAP_GROWSDOWN) 1198 const_iv (MAP_GROWSDOWN)
1104 const_iv (MAP_32BIT) 1199 const_iv (MAP_32BIT)
1105 const_iv (MAP_HUGETLB) 1200 const_iv (MAP_HUGETLB)
1106 const_iv (MAP_STACK) 1201 const_iv (MAP_STACK)
1107 1202
1203 const_iv (MREMAP_MAYMOVE)
1204 const_iv (MREMAP_FIXED)
1205
1206 const_iv (MSG_CMSG_CLOEXEC)
1207 const_iv (SOCK_CLOEXEC)
1208
1108 const_iv (F_DUPFD_CLOEXEC) 1209 const_iv (F_DUPFD_CLOEXEC)
1210
1211 const_iv (F_ADD_SEALS)
1212 const_iv (F_GET_SEALS)
1213 const_iv (F_SEAL_SEAL)
1214 const_iv (F_SEAL_SHRINK)
1215 const_iv (F_SEAL_GROW)
1216 const_iv (F_SEAL_WRITE)
1109 1217
1110 const_iv (F_OFD_GETLK) 1218 const_iv (F_OFD_GETLK)
1111 const_iv (F_OFD_SETLK) 1219 const_iv (F_OFD_SETLK)
1112 const_iv (F_OFD_GETLKW) 1220 const_iv (F_OFD_GETLKW)
1113 1221
… …
1190 1298
1191 const_iv (EFD_CLOEXEC) 1299 const_iv (EFD_CLOEXEC)
1192 const_iv (EFD_NONBLOCK) 1300 const_iv (EFD_NONBLOCK)
1193 const_iv (EFD_SEMAPHORE) 1301 const_iv (EFD_SEMAPHORE)
1194 1302
1303 const_iv (MFD_CLOEXEC)
1304 const_iv (MFD_ALLOW_SEALING)
1305 const_iv (MFD_HUGETLB)
1306
1195 const_iv (CLOCK_REALTIME) 1307 const_iv (CLOCK_REALTIME)
1196 const_iv (CLOCK_MONOTONIC) 1308 const_iv (CLOCK_MONOTONIC)
1197 const_iv (CLOCK_BOOTTIME) 1309 const_iv (CLOCK_BOOTTIME)
1198 const_iv (CLOCK_REALTIME_ALARM) 1310 const_iv (CLOCK_REALTIME_ALARM)
1199 const_iv (CLOCK_BOOTTIME_ALARM) 1311 const_iv (CLOCK_BOOTTIME_ALARM)
… …
1202 const_iv (TFD_CLOEXEC) 1314 const_iv (TFD_CLOEXEC)
1203 1315
1204 const_iv (TFD_TIMER_ABSTIME) 1316 const_iv (TFD_TIMER_ABSTIME)
1205 const_iv (TFD_TIMER_CANCEL_ON_SET) 1317 const_iv (TFD_TIMER_CANCEL_ON_SET)
1206 1318
1319 const_iv (STATX_TYPE)
1320 const_iv (STATX_MODE)
1321 const_iv (STATX_NLINK)
1322 const_iv (STATX_UID)
1323 const_iv (STATX_GID)
1324 const_iv (STATX_ATIME)
1325 const_iv (STATX_MTIME)
1326 const_iv (STATX_CTIME)
1327 const_iv (STATX_INO)
1328 const_iv (STATX_SIZE)
1329 const_iv (STATX_BLOCKS)
1330 const_iv (STATX_BASIC_STATS)
1331 const_iv (STATX_ALL)
1332 const_iv (STATX_BTIME)
1333 const_iv (STATX_ATTR_COMPRESSED)
1334 const_iv (STATX_ATTR_IMMUTABLE)
1335 const_iv (STATX_ATTR_APPEND)
1336 const_iv (STATX_ATTR_NODUMP)
1337 const_iv (STATX_ATTR_ENCRYPTED)
1338 const_iv (STATX_ATTR_AUTOMOUNT)
1339
1340 const_iv (AT_FDCWD)
1341 const_iv (AT_SYMLINK_NOFOLLOW)
1342 const_iv (AT_EACCESS)
1343 const_iv (AT_REMOVEDIR)
1344 const_iv (AT_SYMLINK_FOLLOW)
1345 const_iv (AT_NO_AUTOMOUNT)
1346 const_iv (AT_EMPTY_PATH)
1347 const_iv (AT_STATX_SYNC_TYPE)
1348 const_iv (AT_STATX_AS_STAT)
1349 const_iv (AT_STATX_FORCE_SYNC)
1350 const_iv (AT_STATX_DONT_SYNC)
1351 const_iv (AT_RECURSIVE)
1352
1353 const_iv (OPEN_TREE_CLONE)
1354
1355 const_iv (FSOPEN_CLOEXEC)
1356
1357 const_iv (FSPICK_CLOEXEC)
1358 const_iv (FSPICK_SYMLINK_NOFOLLOW)
1359 const_iv (FSPICK_NO_AUTOMOUNT)
1360 const_iv (FSPICK_EMPTY_PATH)
1361
1362 const_iv (MOVE_MOUNT_F_SYMLINKS)
1363 const_iv (MOVE_MOUNT_F_AUTOMOUNTS)
1364 const_iv (MOVE_MOUNT_F_EMPTY_PATH)
1365 const_iv (MOVE_MOUNT_T_SYMLINKS)
1366 const_iv (MOVE_MOUNT_T_AUTOMOUNTS)
1367 const_iv (MOVE_MOUNT_T_EMPTY_PATH)
1368
1207 /* these are libeio constants, and are independent of gendef0 */ 1369 /* these are libeio constants, and are independent of gendef0 */
1208 const_eio (SEEK_SET) 1370 const_eio (SEEK_SET)
1209 const_eio (SEEK_CUR) 1371 const_eio (SEEK_CUR)
1210 const_eio (SEEK_END) 1372 const_eio (SEEK_END)
1211 1373
1212 const_eio (MCL_FUTURE) 1374 const_eio (MCL_FUTURE)
1213 const_eio (MCL_CURRENT) 1375 const_eio (MCL_CURRENT)
1376 const_eio (MCL_ONFAULT)
1214 1377
1215 const_eio (MS_ASYNC) 1378 const_eio (MS_ASYNC)
1216 const_eio (MS_INVALIDATE) 1379 const_eio (MS_INVALIDATE)
1217 const_eio (MS_SYNC) 1380 const_eio (MS_SYNC)
1218 1381
… …
1257 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) 1420 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1258 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); 1421 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1259 1422
1260 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE)); 1423 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1261 1424
1425 /* allocate dummy pipe fd for aio_close */
1426 {
1427 int pipefd [2];
1428
1429 if (
1430#ifdef _WIN32
1431 _pipe (pipefd, 1, _O_BINARY) < 0
1432#else
1433 pipe (pipefd) < 0
1434 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1435#endif
1436 || close (pipefd [1]) < 0
1437 )
1438 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1439
1440 close_fd = pipefd [0];
1441 }
1442
1262 reinit (); 1443 reinit ();
1263} 1444}
1264 1445
1265void 1446void
1266reinit () 1447reinit ()
… …
1388 1569
1389void 1570void
1390aio_close (SV *fh, SV *callback = &PL_sv_undef) 1571aio_close (SV *fh, SV *callback = &PL_sv_undef)
1391 PPCODE: 1572 PPCODE:
1392{ 1573{
1393 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1394 int fd = s_fileno_croak (fh, 0); 1574 int fd = s_fileno_croak (fh, 0);
1395 dREQ; 1575 dREQ;
1576#if 0
1577 /* partially duplicate logic in s_fileno */
1578 SvGETMAGIC (fh);
1396 1579
1397 if (expect_false (close_fd < 0)) 1580 if (SvROK (fh))
1581 {
1582 fh = SvRV (fh);
1583 SvGETMAGIC (fh);
1584 }
1585
1586 if (SvTYPE (fh) == SVt_PVGV)
1398 { 1587 {
1399 int pipefd [2]; 1588 /* perl filehandle */
1589 PerlIOUnix_refcnt_inc (fd);
1590 do_close ((GV *)fh, 1);
1400 1591
1401 if ( 1592 req->type = EIO_CLOSE;
1402#ifdef _WIN32 1593 req->int1 = fd;
1403 _pipe (pipefd, 1, _O_BINARY) < 0 1594 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1404#else
1405 pipe (pipefd) < 0
1406 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1407#endif
1408 || close (pipefd [1]) < 0
1409 )
1410 abort (); /*D*/
1411
1412 close_fd = pipefd [0];
1413 } 1595 }
1414 1596 else
1597#endif
1598 {
1599 /* fd number */
1415 req->type = EIO_DUP2; 1600 req->type = EIO_DUP2;
1416 req->int1 = close_fd; 1601 req->int1 = close_fd;
1417 req->sv2 = newSVsv (fh); 1602 req->sv2 = newSVsv (fh);
1418 req->int2 = fd; 1603 req->int2 = fd;
1604 }
1419 1605
1420 REQ_SEND; 1606 REQ_SEND;
1421} 1607}
1422 1608
1423void 1609void
… …
1594 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path); 1780 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1595 1781
1596 REQ_SEND; 1782 REQ_SEND;
1597} 1783}
1598 1784
1785void
1786st_xtime ()
1787 ALIAS:
1788 st_atime = 0x01
1789 st_mtime = 0x02
1790 st_ctime = 0x04
1791 st_btime = 0x08
1792 st_xtime = 0x0f
1793 PPCODE:
1794 EXTEND (SP, 4);
1795 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1796 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1797 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1798 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1799
1800void
1801st_xtimensec ()
1802 ALIAS:
1803 st_atimensec = 0x01
1804 st_mtimensec = 0x02
1805 st_ctimensec = 0x04
1806 st_btimensec = 0x08
1807 st_xtimensec = 0x0f
1808 st_btimesec = 0x10
1809 st_gen = 0x20
1810 PPCODE:
1811 EXTEND (SP, 4);
1812 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1813 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1814 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1815 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1816 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1817 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1818
1599UV 1819UV
1600major (UV dev) 1820major (UV dev)
1601 ALIAS: 1821 ALIAS:
1602 minor = 1 1822 minor = 1
1603 CODE: 1823 CODE:
… …
1719 eio_wd wd2 = 0; 1939 eio_wd wd2 = 0;
1720 dREQ; 1940 dREQ;
1721 1941
1722 req->type = ix; 1942 req->type = ix;
1723 req_set_path1 (req, oldpath); 1943 req_set_path1 (req, oldpath);
1724 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2); 1944 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1725 req->int3 = (long)wd2; 1945 req->int3 = (long)wd2;
1726 1946
1727 REQ_SEND; 1947 REQ_SEND;
1728} 1948}
1729 1949
… …
1734 eio_wd wd2 = 0; 1954 eio_wd wd2 = 0;
1735 dREQ; 1955 dREQ;
1736 1956
1737 req->type = EIO_RENAME; 1957 req->type = EIO_RENAME;
1738 req_set_path1 (req, oldpath); 1958 req_set_path1 (req, oldpath);
1739 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2); 1959 req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1740 req->int2 = flags; 1960 req->int2 = flags;
1741 req->int3 = (long)wd2; 1961 req->int3 = (long)wd2;
1742 1962
1743 REQ_SEND; 1963 REQ_SEND;
1744} 1964}
… …
2057void 2277void
2058munmap (SV *scalar) 2278munmap (SV *scalar)
2059 CODE: 2279 CODE:
2060 sv_clear_foreign (scalar); 2280 sv_clear_foreign (scalar);
2061 2281
2282SV *
2283mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2284 CODE:
2285{
2286 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2287 void *new;
2288
2289 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2290 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2291
2292 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2293
2294 RETVAL = &PL_sv_no;
2295
2296 if (new != (void *)-1)
2297 {
2298 RETVAL = new == (void *)mg->mg_ptr
2299 ? newSVpvn ("0 but true", 10)
2300 : &PL_sv_yes;
2301
2302 mg->mg_ptr = (char *)new;
2303 mg->mg_obj = (SV *)new_length;
2304
2305 SvPVX (scalar) = mg->mg_ptr;
2306 SvCUR_set (scalar, new_length);
2307 }
2308}
2309 OUTPUT:
2310 RETVAL
2311
2062int 2312int
2063madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot) 2313madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2064 ALIAS: 2314 ALIAS:
2065 mprotect = 1 2315 mprotect = 1
2066 CODE: 2316 CODE:
2067{ 2317{
2068 STRLEN svlen; 2318 STRLEN svlen;
… …
2089} 2339}
2090 OUTPUT: 2340 OUTPUT:
2091 RETVAL 2341 RETVAL
2092 2342
2093int 2343int
2094munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef) 2344munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2095 CODE: 2345 CODE:
2096{ 2346{
2097 STRLEN svlen; 2347 STRLEN svlen;
2098 void *addr = SvPVbyte (scalar, svlen); 2348 void *addr = SvPVbyte (scalar, svlen);
2099 size_t len = SvUV (length); 2349 size_t len = SvUV (length);
… …
2114#else 2364#else
2115 RETVAL = EIO_ENOSYS (); 2365 RETVAL = EIO_ENOSYS ();
2116#endif 2366#endif
2117} 2367}
2118 OUTPUT: 2368 OUTPUT:
2369 RETVAL
2370
2371int
2372mlockall (int flags)
2373 PROTOTYPE: $;
2374 CODE:
2375 RETVAL = eio_mlockall_sync (flags);
2376 OUTPUT:
2119 RETVAL 2377 RETVAL
2120 2378
2121int 2379int
2122munlockall () 2380munlockall ()
2123 CODE: 2381 CODE:
… …
2128#endif 2386#endif
2129 OUTPUT: 2387 OUTPUT:
2130 RETVAL 2388 RETVAL
2131 2389
2132int 2390int
2391statx (SV8 *pathname, int flags, UV mask)
2392 CODE:
2393{
2394 /* undocumented, and might go away, and anyway, should use eio_statx */
2395 SV *wdsv = 0;
2396 SV *pathsv = 0;
2397 eio_wd wd = EIO_CWD;
2398 void *ptr;
2399 int res;
2400
2401 req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
2402 RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
2403
2404 SvREFCNT_dec (pathsv);
2405 SvREFCNT_dec (wdsv);
2406}
2407 OUTPUT:
2408 RETVAL
2409
2410U32
2411stx_mode ()
2412 PROTOTYPE:
2413 CODE:
2414#if HAVE_STATX
2415 RETVAL = stx.stx_mode;
2416#else
2417 XSRETURN_UNDEF;
2418#endif
2419 OUTPUT:
2420 RETVAL
2421
2422#define STATX_OFFSET_mask statx_offsetof (stx_mask)
2423#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
2424#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
2425#define STATX_OFFSET_uid statx_offsetof (stx_uid)
2426#define STATX_OFFSET_gid statx_offsetof (stx_gid)
2427#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
2428#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
2429#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
2430#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
2431#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
2432#define STATX_OFFSET_ino statx_offsetof (stx_ino)
2433#define STATX_OFFSET_size statx_offsetof (stx_size)
2434#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
2435#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
2436#define STATX_OFFSET_atime statx_offsetof (stx_atime)
2437#define STATX_OFFSET_btime statx_offsetof (stx_btime)
2438#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
2439#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
2440
2441U32
2442stx_mask ()
2443 PROTOTYPE:
2444 ALIAS:
2445 stx_mask = STATX_OFFSET_mask
2446 stx_blksize = STATX_OFFSET_blksize
2447 stx_nlink = STATX_OFFSET_nlink
2448 stx_uid = STATX_OFFSET_uid
2449 stx_gid = STATX_OFFSET_gid
2450 stx_rdev_major = STATX_OFFSET_rdev_major
2451 stx_rdev_minor = STATX_OFFSET_rdev_minor
2452 stx_dev_major = STATX_OFFSET_dev_major
2453 stx_dev_minor = STATX_OFFSET_dev_minor
2454 CODE:
2455#if HAVE_STATX
2456 RETVAL = *(__u32 *)((char *)&stx + ix);
2457#else
2458 XSRETURN_UNDEF;
2459#endif
2460 OUTPUT:
2461 RETVAL
2462
2463VAL64
2464stx_attributes ()
2465 PROTOTYPE:
2466 ALIAS:
2467 stx_attributes = STATX_OFFSET_attributes
2468 stx_ino = STATX_OFFSET_ino
2469 stx_size = STATX_OFFSET_size
2470 stx_blocks = STATX_OFFSET_blocks
2471 stx_attributes_mask = STATX_OFFSET_attributes_mask
2472 CODE:
2473#if HAVE_STATX
2474 RETVAL = *(__u64 *)((char *)&stx + ix);
2475#else
2476 XSRETURN_UNDEF;
2477#endif
2478 OUTPUT:
2479 RETVAL
2480
2481NV
2482stx_atime ()
2483 PROTOTYPE:
2484 ALIAS:
2485 stx_atime = STATX_OFFSET_atime
2486 stx_btime = STATX_OFFSET_btime
2487 stx_ctime = STATX_OFFSET_ctime
2488 stx_mtime = STATX_OFFSET_mtime
2489 CODE:
2490#if HAVE_STATX
2491 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2492 RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
2493#else
2494 XSRETURN_UNDEF;
2495#endif
2496 OUTPUT:
2497 RETVAL
2498
2499VAL64
2500stx_atimesec ()
2501 PROTOTYPE:
2502 ALIAS:
2503 stx_atimesec = STATX_OFFSET_atime
2504 stx_btimesec = STATX_OFFSET_btime
2505 stx_ctimesec = STATX_OFFSET_ctime
2506 stx_mtimesec = STATX_OFFSET_mtime
2507 CODE:
2508#if HAVE_STATX
2509 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2510 RETVAL = ts->tv_sec;
2511#else
2512 XSRETURN_UNDEF;
2513#endif
2514 OUTPUT:
2515 RETVAL
2516
2517U32
2518stx_atimensec ()
2519 PROTOTYPE:
2520 ALIAS:
2521 stx_atimensec = STATX_OFFSET_atime
2522 stx_btimensec = STATX_OFFSET_btime
2523 stx_ctimensec = STATX_OFFSET_ctime
2524 stx_mtimensec = STATX_OFFSET_mtime
2525 CODE:
2526#if HAVE_STATX
2527 struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
2528 RETVAL = ts->tv_nsec;
2529#else
2530 RETVAL = 0;
2531#endif
2532 OUTPUT:
2533 RETVAL
2534
2535void
2536accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
2537 PPCODE:
2538{
2539 SV *retval;
2540#if HAVE_ACCEPT4
2541 socklen_t salen_ = salen ? salen + 1 : 0;
2542
2543 if (salen)
2544 {
2545 sv_upgrade (sockaddr, SVt_PV);
2546 sv_grow (sockaddr, salen_);
2547 }
2548
2549 int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
2550
2551 retval = newmortalFH (res, O_RDWR);
2552
2553 if (res >= 0 && salen > 0)
2554 {
2555 if (salen_ > salen + 1)
2556 salen_ = salen + 1;
2557
2558 SvPOK_only (sockaddr);
2559 SvCUR_set (sockaddr, salen_);
2560 }
2561#else
2562 errno = ENOSYS;
2563 retval = &PL_sv_undef;
2564#endif
2565 XPUSHs (retval);
2566}
2567
2568ssize_t
2133splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags) 2569splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2134 CODE: 2570 CODE:
2135{ 2571{
2136#if HAVE_LINUX_SPLICE 2572#if HAVE_LINUX_SPLICE
2137 loff_t off_in_, off_out_; 2573 loff_t off_in_, off_out_;
… …
2145#endif 2581#endif
2146} 2582}
2147 OUTPUT: 2583 OUTPUT:
2148 RETVAL 2584 RETVAL
2149 2585
2150int 2586ssize_t
2151tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags) 2587tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2152 CODE: 2588 CODE:
2153#if HAVE_LINUX_SPLICE 2589#if HAVE_LINUX_SPLICE
2154 RETVAL = tee (rfh, wfh, length, flags); 2590 RETVAL = tee (rfh, wfh, length, flags);
2155#else 2591#else
… …
2198 PUSHs (newmortalFH (fd[1], O_WRONLY)); 2634 PUSHs (newmortalFH (fd[1], O_WRONLY));
2199 } 2635 }
2200} 2636}
2201 2637
2202void 2638void
2639pidfd_open (int pid, unsigned int flags = 0)
2640 PPCODE:
2641{
2642 /*GENDEF0_SYSCALL(pidfd_open,434)*/
2643 int fd = syscall (SYS_pidfd_open, pid, flags);
2644 XPUSHs (newmortalFH (fd, O_RDWR));
2645}
2646
2647int
2648pidfd_send_signal (SV *pidfh, int sig, SV *siginfo = &PL_sv_undef, unsigned int flags = 0)
2649 PPCODE:
2650{
2651 int res;
2652 siginfo_t si = { 0 };
2653
2654 if (SvOK (siginfo))
2655 {
2656 HV *hv;
2657 SV **svp;
2658
2659 if (!SvROK (siginfo) || SvTYPE (SvRV (siginfo)) != SVt_PVHV)
2660 croak ("siginfo argument must be a hashref code, pid, uid and value_int or value_ptr members, caught");
2661
2662 hv = (HV *)SvRV (siginfo);
2663
2664 if ((svp = hv_fetchs (hv, "code" , 0))) si.si_code = SvIV (*svp);
2665 if ((svp = hv_fetchs (hv, "pid" , 0))) si.si_pid = SvIV (*svp);
2666 if ((svp = hv_fetchs (hv, "uid" , 0))) si.si_uid = SvIV (*svp);
2667 if ((svp = hv_fetchs (hv, "value_int", 0))) si.si_value.sival_int = SvIV (*svp);
2668 if ((svp = hv_fetchs (hv, "value_ptr", 0))) si.si_value.sival_ptr = (void *)SvIV (*svp);
2669 }
2670
2671 /*GENDEF0_SYSCALL(pidfd_send_signal,424)*/
2672 res = syscall (SYS_pidfd_send_signal, s_fileno_croak (pidfh, 0), sig, SvOK (siginfo) ? &si : 0, flags);
2673
2674 XPUSHs (sv_2mortal (newSViv (res)));
2675}
2676
2677void
2678pidfd_getfd (SV *pidfh, int targetfd, unsigned int flags = 0)
2679 PPCODE:
2680{
2681 /*GENDEF0_SYSCALL(pidfd_getfd,438)*/
2682 int fd = syscall (SYS_pidfd_getfd, s_fileno_croak (pidfh, 0), targetfd, flags);
2683 XPUSHs (newmortalFH (fd, O_RDWR));
2684}
2685
2686void
2203eventfd (unsigned int initval = 0, int flags = 0) 2687eventfd (unsigned int initval = 0, int flags = 0)
2204 PPCODE: 2688 PPCODE:
2205{ 2689{
2206 int fd; 2690 int fd;
2207#if HAVE_EVENTFD 2691#if HAVE_EVENTFD
… …
2230void 2714void
2231timerfd_settime (SV *fh, int flags, NV interval, NV value) 2715timerfd_settime (SV *fh, int flags, NV interval, NV value)
2232 PPCODE: 2716 PPCODE:
2233{ 2717{
2234 int fd = s_fileno_croak (fh, 0); 2718 int fd = s_fileno_croak (fh, 0);
2719#if HAVE_TIMERFD
2235 int res; 2720 int res;
2236 struct itimerspec its, ots; 2721 struct itimerspec its, ots;
2237 2722
2238 ts_set (&its.it_interval, interval); 2723 ts_set (&its.it_interval, interval);
2239 ts_set (&its.it_value , value); 2724 ts_set (&its.it_value , value);
2240#if HAVE_TIMERFD
2241 res = timerfd_settime (fd, flags, &its, &ots); 2725 res = timerfd_settime (fd, flags, &its, &ots);
2242#else
2243 res = (errno = ENOSYS, -1);
2244#endif
2245 2726
2246 if (!res) 2727 if (!res)
2247 { 2728 {
2248 EXTEND (SP, 2); 2729 EXTEND (SP, 2);
2249 PUSHs (newSVnv (ts_get (&ots.it_interval))); 2730 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2250 PUSHs (newSVnv (ts_get (&ots.it_value))); 2731 PUSHs (newSVnv (ts_get (&ots.it_value)));
2251 } 2732 }
2733#else
2734 errno = ENOSYS;
2735#endif
2252} 2736}
2253 2737
2254void 2738void
2255timerfd_gettime (SV *fh) 2739timerfd_gettime (SV *fh)
2256 PPCODE: 2740 PPCODE:
2257{ 2741{
2258 int fd = s_fileno_croak (fh, 0); 2742 int fd = s_fileno_croak (fh, 0);
2743#if HAVE_TIMERFD
2259 int res; 2744 int res;
2260 struct itimerspec ots; 2745 struct itimerspec ots;
2261#if HAVE_TIMERFD
2262 res = timerfd_gettime (fd, &ots); 2746 res = timerfd_gettime (fd, &ots);
2263#else
2264 res = (errno = ENOSYS, -1);
2265#endif
2266 2747
2267 if (!res) 2748 if (!res)
2268 { 2749 {
2269 EXTEND (SP, 2); 2750 EXTEND (SP, 2);
2270 PUSHs (newSVnv (ts_get (&ots.it_interval))); 2751 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2271 PUSHs (newSVnv (ts_get (&ots.it_value))); 2752 PUSHs (newSVnv (ts_get (&ots.it_value)));
2272 } 2753 }
2754#else
2755 errno = ENOSYS;
2756#endif
2757}
2758
2759void
2760memfd_create (SV8 *pathname, int flags = 0)
2761 PPCODE:
2762{
2763 int fd;
2764#if HAVE_MEMFD_CREATE
2765 fd = memfd_create (SvPVbyte_nolen (pathname), flags);
2766#else
2767 fd = (errno = ENOSYS, -1);
2768#endif
2769
2770 XPUSHs (newmortalFH (fd, O_RDWR));
2273} 2771}
2274 2772
2275UV 2773UV
2276get_fdlimit () 2774get_fdlimit ()
2277 CODE: 2775 CODE:
… …
2312 if (0 == setrlimit (RLIMIT_NOFILE, &rl)) 2810 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2313 XSRETURN_YES; 2811 XSRETURN_YES;
2314 2812
2315 if (errno == EPERM) 2813 if (errno == EPERM)
2316 { 2814 {
2317 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */ 2815 /* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2318 /* our limit overflows a system-wide limit */ 2816 /* our limit overflows a system-wide limit */
2319 /* try an adaptive algorithm, but do not lower the hardlimit */ 2817 /* try an adaptive algorithm, but do not lower the hardlimit */
2320 rl.rlim_max = 0; 2818 rl.rlim_max = 0;
2321 for (bit = 0x40000000U; bit; bit >>= 1) 2819 for (bit = 0x40000000U; bit; bit >>= 1)
2322 { 2820 {
2323 rl.rlim_max |= bit; 2821 rl.rlim_max |= bit;
2324 rl.rlim_cur = rl.rlim_max; 2822 rl.rlim_cur = rl.rlim_max;
2325 2823
2326 /* nevr decrease the hard limit */ 2824 /* never decrease the hard limit */
2327 if (rl.rlim_max < orig_rlim_max) 2825 if (rl.rlim_max < orig_rlim_max)
2328 break; 2826 break;
2329 2827
2330 if (0 != setrlimit (RLIMIT_NOFILE, &rl)) 2828 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2331 rl.rlim_max &= ~bit; /* too high, remove bit again */ 2829 rl.rlim_max &= ~bit; /* too high, remove bit again */

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