1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
74 | #else |
74 | #else |
75 | |
75 | |
76 | # include "config.h" |
76 | # include "config.h" |
77 | # include <sys/time.h> |
77 | # include <sys/time.h> |
78 | # include <sys/select.h> |
78 | # include <sys/select.h> |
79 | # include <sys/mman.h> |
|
|
80 | # include <unistd.h> |
79 | # include <unistd.h> |
81 | # include <utime.h> |
80 | # include <utime.h> |
82 | # include <signal.h> |
81 | # include <signal.h> |
83 | # include <dirent.h> |
82 | # include <dirent.h> |
|
|
83 | |
|
|
84 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
|
|
85 | # include <sys/mman.h> |
|
|
86 | #endif |
84 | |
87 | |
85 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
88 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
86 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
89 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
87 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
90 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
88 | # define D_INO(de) (de)->d_fileno |
91 | # define D_INO(de) (de)->d_fileno |
… | |
… | |
129 | #endif |
132 | #endif |
130 | #ifndef D_NAMLEN |
133 | #ifndef D_NAMLEN |
131 | # define D_NAMLEN(de) strlen ((de)->d_name) |
134 | # define D_NAMLEN(de) strlen ((de)->d_name) |
132 | #endif |
135 | #endif |
133 | |
136 | |
134 | /* number of seconds after which an idle threads exit */ |
|
|
135 | #define IDLE_TIMEOUT 10 |
|
|
136 | |
|
|
137 | /* used for struct dirent, AIX doesn't provide it */ |
137 | /* used for struct dirent, AIX doesn't provide it */ |
138 | #ifndef NAME_MAX |
138 | #ifndef NAME_MAX |
139 | # define NAME_MAX 4096 |
139 | # define NAME_MAX 4096 |
140 | #endif |
140 | #endif |
141 | |
141 | |
… | |
… | |
220 | static unsigned int max_poll_reqs; /* reslock */ |
220 | static unsigned int max_poll_reqs; /* reslock */ |
221 | |
221 | |
222 | static volatile unsigned int nreqs; /* reqlock */ |
222 | static volatile unsigned int nreqs; /* reqlock */ |
223 | static volatile unsigned int nready; /* reqlock */ |
223 | static volatile unsigned int nready; /* reqlock */ |
224 | static volatile unsigned int npending; /* reqlock */ |
224 | static volatile unsigned int npending; /* reqlock */ |
225 | static volatile unsigned int max_idle = 4; |
225 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
|
|
226 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
226 | |
227 | |
227 | static mutex_t wrklock = X_MUTEX_INIT; |
228 | static xmutex_t wrklock; |
228 | static mutex_t reslock = X_MUTEX_INIT; |
229 | static xmutex_t reslock; |
229 | static mutex_t reqlock = X_MUTEX_INIT; |
230 | static xmutex_t reqlock; |
230 | static cond_t reqwait = X_COND_INIT; |
231 | static xcond_t reqwait; |
231 | |
232 | |
232 | #if !HAVE_PREADWRITE |
233 | #if !HAVE_PREADWRITE |
233 | /* |
234 | /* |
234 | * make our pread/pwrite emulation safe against themselves, but not against |
235 | * make our pread/pwrite emulation safe against themselves, but not against |
235 | * normal read/write by using a mutex. slows down execution a lot, |
236 | * normal read/write by using a mutex. slows down execution a lot, |
236 | * but that's your problem, not mine. |
237 | * but that's your problem, not mine. |
237 | */ |
238 | */ |
238 | static mutex_t preadwritelock = X_MUTEX_INIT; |
239 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
239 | #endif |
240 | #endif |
240 | |
241 | |
241 | typedef struct etp_worker |
242 | typedef struct etp_worker |
242 | { |
243 | { |
243 | /* locked by wrklock */ |
244 | /* locked by wrklock */ |
244 | struct etp_worker *prev, *next; |
245 | struct etp_worker *prev, *next; |
245 | |
246 | |
246 | thread_t tid; |
247 | xthread_t tid; |
247 | |
248 | |
248 | /* locked by reslock, reqlock or wrklock */ |
249 | /* locked by reslock, reqlock or wrklock */ |
249 | ETP_REQ *req; /* currently processed request */ |
250 | ETP_REQ *req; /* currently processed request */ |
250 | |
251 | |
251 | ETP_WORKER_COMMON |
252 | ETP_WORKER_COMMON |
… | |
… | |
365 | } |
366 | } |
366 | |
367 | |
367 | abort (); |
368 | abort (); |
368 | } |
369 | } |
369 | |
370 | |
|
|
371 | static void etp_thread_init (void) |
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|
372 | { |
|
|
373 | X_MUTEX_CREATE (wrklock); |
|
|
374 | X_MUTEX_CREATE (reslock); |
|
|
375 | X_MUTEX_CREATE (reqlock); |
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|
376 | X_COND_CREATE (reqwait); |
|
|
377 | } |
|
|
378 | |
370 | static void etp_atfork_prepare (void) |
379 | static void etp_atfork_prepare (void) |
371 | { |
380 | { |
372 | X_LOCK (wrklock); |
381 | X_LOCK (wrklock); |
373 | X_LOCK (reqlock); |
382 | X_LOCK (reqlock); |
374 | X_LOCK (reslock); |
383 | X_LOCK (reslock); |
… | |
… | |
412 | idle = 0; |
421 | idle = 0; |
413 | nreqs = 0; |
422 | nreqs = 0; |
414 | nready = 0; |
423 | nready = 0; |
415 | npending = 0; |
424 | npending = 0; |
416 | |
425 | |
417 | etp_atfork_parent (); |
426 | etp_thread_init (); |
418 | } |
427 | } |
419 | |
428 | |
420 | static void |
429 | static void |
421 | etp_once_init (void) |
430 | etp_once_init (void) |
422 | { |
431 | { |
|
|
432 | etp_thread_init (); |
423 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
433 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
424 | } |
434 | } |
425 | |
435 | |
426 | static int |
436 | static int |
427 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
437 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
… | |
… | |
618 | } |
628 | } |
619 | |
629 | |
620 | static void etp_set_max_idle (unsigned int nthreads) |
630 | static void etp_set_max_idle (unsigned int nthreads) |
621 | { |
631 | { |
622 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
632 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
623 | max_idle = nthreads <= 0 ? 1 : nthreads; |
633 | max_idle = nthreads; |
|
|
634 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
635 | } |
|
|
636 | |
|
|
637 | static void etp_set_idle_timeout (unsigned int seconds) |
|
|
638 | { |
|
|
639 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
640 | idle_timeout = seconds; |
624 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
641 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
625 | } |
642 | } |
626 | |
643 | |
627 | static void etp_set_min_parallel (unsigned int nthreads) |
644 | static void etp_set_min_parallel (unsigned int nthreads) |
628 | { |
645 | { |
… | |
… | |
756 | void eio_set_max_idle (unsigned int nthreads) |
773 | void eio_set_max_idle (unsigned int nthreads) |
757 | { |
774 | { |
758 | etp_set_max_idle (nthreads); |
775 | etp_set_max_idle (nthreads); |
759 | } |
776 | } |
760 | |
777 | |
|
|
778 | void eio_set_idle_timeout (unsigned int seconds) |
|
|
779 | { |
|
|
780 | etp_set_idle_timeout (seconds); |
|
|
781 | } |
|
|
782 | |
761 | void eio_set_min_parallel (unsigned int nthreads) |
783 | void eio_set_min_parallel (unsigned int nthreads) |
762 | { |
784 | { |
763 | etp_set_min_parallel (nthreads); |
785 | etp_set_min_parallel (nthreads); |
764 | } |
786 | } |
765 | |
787 | |
… | |
… | |
813 | |
835 | |
814 | return res; |
836 | return res; |
815 | } |
837 | } |
816 | #endif |
838 | #endif |
817 | |
839 | |
818 | #ifndef HAVE_FUTIMES |
840 | #ifndef HAVE_UTIMES |
819 | |
841 | |
820 | # undef utimes |
842 | # undef utimes |
821 | # undef futimes |
|
|
822 | # define utimes(path,times) eio__utimes (path, times) |
843 | # define utimes(path,times) eio__utimes (path, times) |
823 | # define futimes(fd,times) eio__futimes (fd, times) |
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|
824 | |
844 | |
825 | static int |
845 | static int |
826 | eio__utimes (const char *filename, const struct timeval times[2]) |
846 | eio__utimes (const char *filename, const struct timeval times[2]) |
827 | { |
847 | { |
828 | if (times) |
848 | if (times) |
… | |
… | |
835 | return utime (filename, &buf); |
855 | return utime (filename, &buf); |
836 | } |
856 | } |
837 | else |
857 | else |
838 | return utime (filename, 0); |
858 | return utime (filename, 0); |
839 | } |
859 | } |
|
|
860 | |
|
|
861 | #endif |
|
|
862 | |
|
|
863 | #ifndef HAVE_FUTIMES |
|
|
864 | |
|
|
865 | # undef futimes |
|
|
866 | # define futimes(fd,times) eio__futimes (fd, times) |
840 | |
867 | |
841 | static int eio__futimes (int fd, const struct timeval tv[2]) |
868 | static int eio__futimes (int fd, const struct timeval tv[2]) |
842 | { |
869 | { |
843 | errno = ENOSYS; |
870 | errno = ENOSYS; |
844 | return -1; |
871 | return -1; |
… | |
… | |
1033 | } |
1060 | } |
1034 | |
1061 | |
1035 | static signed char |
1062 | static signed char |
1036 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1063 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1037 | { |
1064 | { |
1038 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
1065 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
1039 | : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; |
1066 | : a->inode < b->inode ? -1 |
|
|
1067 | : a->inode > b->inode ? 1 |
|
|
1068 | : 0; |
1040 | } |
1069 | } |
1041 | |
1070 | |
1042 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
1071 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
1043 | |
1072 | |
1044 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
1073 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
… | |
… | |
1050 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
1079 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
1051 | unsigned char *bit = bits; |
1080 | unsigned char *bit = bits; |
1052 | |
1081 | |
1053 | assert (CHAR_BIT == 8); |
1082 | assert (CHAR_BIT == 8); |
1054 | assert (sizeof (eio_dirent) * 8 < 256); |
1083 | assert (sizeof (eio_dirent) * 8 < 256); |
1055 | assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */ |
1084 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
1056 | assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */ |
1085 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
1057 | |
1086 | |
1058 | if (size <= EIO_SORT_FAST) |
1087 | if (size <= EIO_SORT_FAST) |
1059 | return; |
1088 | return; |
1060 | |
1089 | |
1061 | /* first prepare an array of bits to test in our radix sort */ |
1090 | /* first prepare an array of bits to test in our radix sort */ |
… | |
… | |
1216 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1245 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1217 | |
1246 | |
1218 | X_LOCK (wrklock); |
1247 | X_LOCK (wrklock); |
1219 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1248 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1220 | self->dirp = dirp = opendir (req->ptr1); |
1249 | self->dirp = dirp = opendir (req->ptr1); |
|
|
1250 | |
1221 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1251 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1222 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1252 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1223 | req->ptr2 = names = malloc (namesalloc); |
1253 | req->ptr2 = names = malloc (namesalloc); |
1224 | X_UNLOCK (wrklock); |
1254 | X_UNLOCK (wrklock); |
1225 | |
1255 | |
… | |
… | |
1237 | /* sort etc. */ |
1267 | /* sort etc. */ |
1238 | req->int1 = flags; |
1268 | req->int1 = flags; |
1239 | req->result = dentoffs; |
1269 | req->result = dentoffs; |
1240 | |
1270 | |
1241 | if (flags & EIO_READDIR_STAT_ORDER) |
1271 | if (flags & EIO_READDIR_STAT_ORDER) |
1242 | eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */ |
1272 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
1243 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1273 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1244 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1274 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1245 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1275 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1246 | else |
1276 | else |
1247 | { |
1277 | { |
… | |
… | |
1249 | eio_dirent *oth = dents + dentoffs; |
1279 | eio_dirent *oth = dents + dentoffs; |
1250 | eio_dirent *dir = dents; |
1280 | eio_dirent *dir = dents; |
1251 | |
1281 | |
1252 | /* now partition dirs to the front, and non-dirs to the back */ |
1282 | /* now partition dirs to the front, and non-dirs to the back */ |
1253 | /* by walking from both sides and swapping if necessary */ |
1283 | /* by walking from both sides and swapping if necessary */ |
1254 | /* also clear score, so it doesn't influence sorting */ |
|
|
1255 | while (oth > dir) |
1284 | while (oth > dir) |
1256 | { |
1285 | { |
1257 | if (dir->type == EIO_DT_DIR) |
1286 | if (dir->type == EIO_DT_DIR) |
1258 | ++dir; |
1287 | ++dir; |
1259 | else if ((--oth)->type == EIO_DT_DIR) |
1288 | else if ((--oth)->type == EIO_DT_DIR) |
… | |
… | |
1262 | |
1291 | |
1263 | ++dir; |
1292 | ++dir; |
1264 | } |
1293 | } |
1265 | } |
1294 | } |
1266 | |
1295 | |
1267 | /* now sort the dirs only */ |
1296 | /* now sort the dirs only (dirs all have the same score) */ |
1268 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1297 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1269 | } |
1298 | } |
1270 | |
1299 | |
1271 | break; |
1300 | break; |
1272 | } |
1301 | } |
… | |
… | |
1392 | break; |
1421 | break; |
1393 | } |
1422 | } |
1394 | } |
1423 | } |
1395 | } |
1424 | } |
1396 | |
1425 | |
|
|
1426 | #ifdef PAGESIZE |
|
|
1427 | # define eio_pagesize() PAGESIZE |
|
|
1428 | #else |
|
|
1429 | static intptr_t |
|
|
1430 | eio_pagesize (void) |
|
|
1431 | { |
|
|
1432 | static intptr_t page; |
|
|
1433 | |
|
|
1434 | if (!page) |
|
|
1435 | page = sysconf (_SC_PAGESIZE); |
|
|
1436 | |
|
|
1437 | return page; |
|
|
1438 | } |
|
|
1439 | #endif |
|
|
1440 | |
|
|
1441 | static void |
|
|
1442 | eio_page_align (void **addr, size_t *length) |
|
|
1443 | { |
|
|
1444 | intptr_t mask = eio_pagesize () - 1; |
|
|
1445 | |
|
|
1446 | /* round down addr */ |
|
|
1447 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1448 | |
|
|
1449 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1450 | *length += adj; |
|
|
1451 | |
|
|
1452 | /* round up length */ |
|
|
1453 | *length = (*length + mask) & ~mask; |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | #if !_POSIX_MEMLOCK |
|
|
1457 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1458 | #else |
|
|
1459 | |
|
|
1460 | static int |
|
|
1461 | eio__mlockall (int flags) |
|
|
1462 | { |
|
|
1463 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1464 | extern int mallopt (int, int); |
|
|
1465 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1466 | #endif |
|
|
1467 | |
|
|
1468 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1469 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1470 | { |
|
|
1471 | flags = 0 |
|
|
1472 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1473 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1474 | } |
|
|
1475 | |
|
|
1476 | return mlockall (flags); |
|
|
1477 | } |
|
|
1478 | #endif |
|
|
1479 | |
|
|
1480 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1481 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1482 | #else |
|
|
1483 | |
|
|
1484 | static int |
|
|
1485 | eio__mlock (void *addr, size_t length) |
|
|
1486 | { |
|
|
1487 | eio_page_align (&addr, &length); |
|
|
1488 | |
|
|
1489 | return mlock (addr, length); |
|
|
1490 | } |
|
|
1491 | |
|
|
1492 | #endif |
|
|
1493 | |
1397 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1494 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1398 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
1495 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
1399 | #else |
1496 | #else |
1400 | |
1497 | |
1401 | int |
1498 | int |
1402 | eio__msync (void *mem, size_t len, int flags) |
1499 | eio__msync (void *mem, size_t len, int flags) |
1403 | { |
1500 | { |
|
|
1501 | eio_page_align (&mem, &len); |
|
|
1502 | |
1404 | if (EIO_MS_ASYNC != MS_SYNC |
1503 | if (EIO_MS_ASYNC != MS_SYNC |
1405 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
1504 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
1406 | || EIO_MS_SYNC != MS_SYNC) |
1505 | || EIO_MS_SYNC != MS_SYNC) |
1407 | { |
1506 | { |
1408 | flags = 0 |
1507 | flags = 0 |
… | |
… | |
1417 | #endif |
1516 | #endif |
1418 | |
1517 | |
1419 | int |
1518 | int |
1420 | eio__mtouch (void *mem, size_t len, int flags) |
1519 | eio__mtouch (void *mem, size_t len, int flags) |
1421 | { |
1520 | { |
|
|
1521 | eio_page_align (&mem, &len); |
|
|
1522 | |
|
|
1523 | { |
1422 | intptr_t addr = (intptr_t)mem; |
1524 | intptr_t addr = (intptr_t)mem; |
1423 | intptr_t end = addr + len; |
1525 | intptr_t end = addr + len; |
1424 | #ifdef PAGESIZE |
1526 | intptr_t page = eio_pagesize (); |
1425 | const intptr_t page = PAGESIZE; |
|
|
1426 | #else |
|
|
1427 | static intptr_t page; |
|
|
1428 | |
1527 | |
1429 | if (!page) |
|
|
1430 | page = sysconf (_SC_PAGESIZE); |
|
|
1431 | #endif |
|
|
1432 | |
|
|
1433 | /* round down to start of page, although this is probably useless */ |
|
|
1434 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
|
|
1435 | |
|
|
1436 | if (addr < end) |
1528 | if (addr < end) |
1437 | if (flags & EIO_MT_MODIFY) /* modify */ |
1529 | if (flags & EIO_MT_MODIFY) /* modify */ |
1438 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1530 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1439 | else |
1531 | else |
1440 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
1532 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
1533 | } |
1441 | |
1534 | |
1442 | return 0; |
1535 | return 0; |
1443 | } |
1536 | } |
1444 | |
1537 | |
1445 | /*****************************************************************************/ |
1538 | /*****************************************************************************/ |
… | |
… | |
1479 | if (req) |
1572 | if (req) |
1480 | break; |
1573 | break; |
1481 | |
1574 | |
1482 | ++idle; |
1575 | ++idle; |
1483 | |
1576 | |
1484 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1577 | ts.tv_sec = time (0) + idle_timeout; |
1485 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1578 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1486 | { |
1579 | { |
1487 | if (idle > max_idle) |
1580 | if (idle > max_idle) |
1488 | { |
1581 | { |
1489 | --idle; |
1582 | --idle; |
… | |
… | |
1568 | return 0; \ |
1661 | return 0; \ |
1569 | } |
1662 | } |
1570 | |
1663 | |
1571 | static void eio_execute (etp_worker *self, eio_req *req) |
1664 | static void eio_execute (etp_worker *self, eio_req *req) |
1572 | { |
1665 | { |
1573 | errno = 0; |
|
|
1574 | |
|
|
1575 | switch (req->type) |
1666 | switch (req->type) |
1576 | { |
1667 | { |
1577 | case EIO_READ: ALLOC (req->size); |
1668 | case EIO_READ: ALLOC (req->size); |
1578 | req->result = req->offs >= 0 |
1669 | req->result = req->offs >= 0 |
1579 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1670 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
… | |
… | |
1611 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1702 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1612 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1703 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1613 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1704 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1614 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1705 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1615 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1706 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1616 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1707 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1617 | |
1708 | |
1618 | case EIO_READLINK: ALLOC (PATH_MAX); |
1709 | case EIO_READLINK: ALLOC (PATH_MAX); |
1619 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1710 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1620 | |
1711 | |
1621 | case EIO_SYNC: req->result = 0; sync (); break; |
1712 | case EIO_SYNC: req->result = 0; sync (); break; |
1622 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1713 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1623 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1714 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1624 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1715 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1625 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1716 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
|
|
1717 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
1718 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1626 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1719 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1627 | |
1720 | |
1628 | case EIO_READDIR: eio__scandir (req, self); break; |
1721 | case EIO_READDIR: eio__scandir (req, self); break; |
1629 | |
1722 | |
1630 | case EIO_BUSY: |
1723 | case EIO_BUSY: |
1631 | #ifdef _WIN32 |
1724 | #ifdef _WIN32 |
1632 | Sleep (req->nv1 * 1000.); |
1725 | Sleep (req->nv1 * 1e3); |
1633 | #else |
1726 | #else |
1634 | { |
1727 | { |
1635 | struct timeval tv; |
1728 | struct timeval tv; |
1636 | |
1729 | |
1637 | tv.tv_sec = req->nv1; |
1730 | tv.tv_sec = req->nv1; |
1638 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1731 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1639 | |
1732 | |
1640 | req->result = select (0, 0, 0, 0, &tv); |
1733 | req->result = select (0, 0, 0, 0, &tv); |
1641 | } |
1734 | } |
1642 | #endif |
1735 | #endif |
1643 | break; |
1736 | break; |
… | |
… | |
1658 | times = tv; |
1751 | times = tv; |
1659 | } |
1752 | } |
1660 | else |
1753 | else |
1661 | times = 0; |
1754 | times = 0; |
1662 | |
1755 | |
1663 | |
|
|
1664 | req->result = req->type == EIO_FUTIME |
1756 | req->result = req->type == EIO_FUTIME |
1665 | ? futimes (req->int1, times) |
1757 | ? futimes (req->int1, times) |
1666 | : utimes (req->ptr1, times); |
1758 | : utimes (req->ptr1, times); |
1667 | } |
1759 | } |
1668 | break; |
1760 | break; |
… | |
… | |
1677 | case EIO_CUSTOM: |
1769 | case EIO_CUSTOM: |
1678 | ((void (*)(eio_req *))req->feed) (req); |
1770 | ((void (*)(eio_req *))req->feed) (req); |
1679 | break; |
1771 | break; |
1680 | |
1772 | |
1681 | default: |
1773 | default: |
|
|
1774 | errno = ENOSYS; |
1682 | req->result = -1; |
1775 | req->result = -1; |
1683 | break; |
1776 | break; |
1684 | } |
1777 | } |
1685 | |
1778 | |
1686 | req->errorno = errno; |
1779 | req->errorno = errno; |
… | |
… | |
1716 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1809 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1717 | { |
1810 | { |
1718 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1811 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1719 | } |
1812 | } |
1720 | |
1813 | |
|
|
1814 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
1815 | { |
|
|
1816 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
1817 | } |
|
|
1818 | |
|
|
1819 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
1820 | { |
|
|
1821 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
1822 | } |
|
|
1823 | |
1721 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1824 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1722 | { |
1825 | { |
1723 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1826 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1724 | } |
1827 | } |
1725 | |
1828 | |
… | |
… | |
1859 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1962 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1860 | } |
1963 | } |
1861 | |
1964 | |
1862 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1965 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1863 | { |
1966 | { |
1864 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
1967 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1865 | } |
1968 | } |
1866 | |
1969 | |
1867 | static eio_req * |
1970 | static eio_req * |
1868 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1971 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1869 | { |
1972 | { |