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 | * |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
|
|
40 | #ifndef _WIN32 |
|
|
41 | # include "config.h" |
|
|
42 | #endif |
|
|
43 | |
40 | #include "eio.h" |
44 | #include "eio.h" |
41 | |
45 | |
42 | #ifdef EIO_STACKSIZE |
46 | #ifdef EIO_STACKSIZE |
43 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
47 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
44 | #endif |
48 | #endif |
… | |
… | |
71 | #ifdef _WIN32 |
75 | #ifdef _WIN32 |
72 | |
76 | |
73 | /*doh*/ |
77 | /*doh*/ |
74 | #else |
78 | #else |
75 | |
79 | |
76 | # include "config.h" |
|
|
77 | # include <sys/time.h> |
80 | # include <sys/time.h> |
78 | # include <sys/select.h> |
81 | # include <sys/select.h> |
79 | # include <sys/mman.h> |
|
|
80 | # include <unistd.h> |
82 | # include <unistd.h> |
81 | # include <utime.h> |
83 | # include <utime.h> |
82 | # include <signal.h> |
84 | # include <signal.h> |
83 | # include <dirent.h> |
85 | # include <dirent.h> |
|
|
86 | |
|
|
87 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
|
|
88 | # include <sys/mman.h> |
|
|
89 | #endif |
84 | |
90 | |
85 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
91 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
86 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
92 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
87 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
93 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
88 | # define D_INO(de) (de)->d_fileno |
94 | # define D_INO(de) (de)->d_fileno |
… | |
… | |
129 | #endif |
135 | #endif |
130 | #ifndef D_NAMLEN |
136 | #ifndef D_NAMLEN |
131 | # define D_NAMLEN(de) strlen ((de)->d_name) |
137 | # define D_NAMLEN(de) strlen ((de)->d_name) |
132 | #endif |
138 | #endif |
133 | |
139 | |
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 */ |
140 | /* used for struct dirent, AIX doesn't provide it */ |
138 | #ifndef NAME_MAX |
141 | #ifndef NAME_MAX |
139 | # define NAME_MAX 4096 |
142 | # define NAME_MAX 4096 |
|
|
143 | #endif |
|
|
144 | |
|
|
145 | /* used for readlink etc. */ |
|
|
146 | #ifndef PATH_MAX |
|
|
147 | # define PATH_MAX 4096 |
140 | #endif |
148 | #endif |
141 | |
149 | |
142 | /* buffer size for various temporary buffers */ |
150 | /* buffer size for various temporary buffers */ |
143 | #define EIO_BUFSIZE 65536 |
151 | #define EIO_BUFSIZE 65536 |
144 | |
152 | |
… | |
… | |
215 | static unsigned int max_poll_reqs; /* reslock */ |
223 | static unsigned int max_poll_reqs; /* reslock */ |
216 | |
224 | |
217 | static volatile unsigned int nreqs; /* reqlock */ |
225 | static volatile unsigned int nreqs; /* reqlock */ |
218 | static volatile unsigned int nready; /* reqlock */ |
226 | static volatile unsigned int nready; /* reqlock */ |
219 | static volatile unsigned int npending; /* reqlock */ |
227 | static volatile unsigned int npending; /* reqlock */ |
220 | static volatile unsigned int max_idle = 4; |
228 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
|
|
229 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
221 | |
230 | |
222 | static mutex_t wrklock = X_MUTEX_INIT; |
231 | static xmutex_t wrklock; |
223 | static mutex_t reslock = X_MUTEX_INIT; |
232 | static xmutex_t reslock; |
224 | static mutex_t reqlock = X_MUTEX_INIT; |
233 | static xmutex_t reqlock; |
225 | static cond_t reqwait = X_COND_INIT; |
234 | static xcond_t reqwait; |
226 | |
235 | |
227 | #if !HAVE_PREADWRITE |
236 | #if !HAVE_PREADWRITE |
228 | /* |
237 | /* |
229 | * make our pread/pwrite emulation safe against themselves, but not against |
238 | * make our pread/pwrite emulation safe against themselves, but not against |
230 | * normal read/write by using a mutex. slows down execution a lot, |
239 | * normal read/write by using a mutex. slows down execution a lot, |
231 | * but that's your problem, not mine. |
240 | * but that's your problem, not mine. |
232 | */ |
241 | */ |
233 | static mutex_t preadwritelock = X_MUTEX_INIT; |
242 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
234 | #endif |
243 | #endif |
235 | |
244 | |
236 | typedef struct etp_worker |
245 | typedef struct etp_worker |
237 | { |
246 | { |
238 | /* locked by wrklock */ |
247 | /* locked by wrklock */ |
239 | struct etp_worker *prev, *next; |
248 | struct etp_worker *prev, *next; |
240 | |
249 | |
241 | thread_t tid; |
250 | xthread_t tid; |
242 | |
251 | |
243 | /* locked by reslock, reqlock or wrklock */ |
252 | /* locked by reslock, reqlock or wrklock */ |
244 | ETP_REQ *req; /* currently processed request */ |
253 | ETP_REQ *req; /* currently processed request */ |
245 | |
254 | |
246 | ETP_WORKER_COMMON |
255 | ETP_WORKER_COMMON |
… | |
… | |
360 | } |
369 | } |
361 | |
370 | |
362 | abort (); |
371 | abort (); |
363 | } |
372 | } |
364 | |
373 | |
|
|
374 | static void etp_thread_init (void) |
|
|
375 | { |
|
|
376 | X_MUTEX_CREATE (wrklock); |
|
|
377 | X_MUTEX_CREATE (reslock); |
|
|
378 | X_MUTEX_CREATE (reqlock); |
|
|
379 | X_COND_CREATE (reqwait); |
|
|
380 | } |
|
|
381 | |
365 | static void etp_atfork_prepare (void) |
382 | static void etp_atfork_prepare (void) |
366 | { |
383 | { |
367 | X_LOCK (wrklock); |
384 | X_LOCK (wrklock); |
368 | X_LOCK (reqlock); |
385 | X_LOCK (reqlock); |
369 | X_LOCK (reslock); |
386 | X_LOCK (reslock); |
… | |
… | |
407 | idle = 0; |
424 | idle = 0; |
408 | nreqs = 0; |
425 | nreqs = 0; |
409 | nready = 0; |
426 | nready = 0; |
410 | npending = 0; |
427 | npending = 0; |
411 | |
428 | |
412 | etp_atfork_parent (); |
429 | etp_thread_init (); |
413 | } |
430 | } |
414 | |
431 | |
415 | static void |
432 | static void |
416 | etp_once_init (void) |
433 | etp_once_init (void) |
417 | { |
434 | { |
|
|
435 | etp_thread_init (); |
418 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
436 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
419 | } |
437 | } |
420 | |
438 | |
421 | static int |
439 | static int |
422 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
440 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
… | |
… | |
613 | } |
631 | } |
614 | |
632 | |
615 | static void etp_set_max_idle (unsigned int nthreads) |
633 | static void etp_set_max_idle (unsigned int nthreads) |
616 | { |
634 | { |
617 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
635 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
618 | max_idle = nthreads <= 0 ? 1 : nthreads; |
636 | max_idle = nthreads; |
|
|
637 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
638 | } |
|
|
639 | |
|
|
640 | static void etp_set_idle_timeout (unsigned int seconds) |
|
|
641 | { |
|
|
642 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
643 | idle_timeout = seconds; |
619 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
644 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
620 | } |
645 | } |
621 | |
646 | |
622 | static void etp_set_min_parallel (unsigned int nthreads) |
647 | static void etp_set_min_parallel (unsigned int nthreads) |
623 | { |
648 | { |
… | |
… | |
751 | void eio_set_max_idle (unsigned int nthreads) |
776 | void eio_set_max_idle (unsigned int nthreads) |
752 | { |
777 | { |
753 | etp_set_max_idle (nthreads); |
778 | etp_set_max_idle (nthreads); |
754 | } |
779 | } |
755 | |
780 | |
|
|
781 | void eio_set_idle_timeout (unsigned int seconds) |
|
|
782 | { |
|
|
783 | etp_set_idle_timeout (seconds); |
|
|
784 | } |
|
|
785 | |
756 | void eio_set_min_parallel (unsigned int nthreads) |
786 | void eio_set_min_parallel (unsigned int nthreads) |
757 | { |
787 | { |
758 | etp_set_min_parallel (nthreads); |
788 | etp_set_min_parallel (nthreads); |
759 | } |
789 | } |
760 | |
790 | |
… | |
… | |
808 | |
838 | |
809 | return res; |
839 | return res; |
810 | } |
840 | } |
811 | #endif |
841 | #endif |
812 | |
842 | |
813 | #ifndef HAVE_FUTIMES |
843 | #ifndef HAVE_UTIMES |
814 | |
844 | |
815 | # undef utimes |
845 | # undef utimes |
816 | # undef futimes |
|
|
817 | # define utimes(path,times) eio__utimes (path, times) |
846 | # define utimes(path,times) eio__utimes (path, times) |
818 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
819 | |
847 | |
820 | static int |
848 | static int |
821 | eio__utimes (const char *filename, const struct timeval times[2]) |
849 | eio__utimes (const char *filename, const struct timeval times[2]) |
822 | { |
850 | { |
823 | if (times) |
851 | if (times) |
… | |
… | |
830 | return utime (filename, &buf); |
858 | return utime (filename, &buf); |
831 | } |
859 | } |
832 | else |
860 | else |
833 | return utime (filename, 0); |
861 | return utime (filename, 0); |
834 | } |
862 | } |
|
|
863 | |
|
|
864 | #endif |
|
|
865 | |
|
|
866 | #ifndef HAVE_FUTIMES |
|
|
867 | |
|
|
868 | # undef futimes |
|
|
869 | # define futimes(fd,times) eio__futimes (fd, times) |
835 | |
870 | |
836 | static int eio__futimes (int fd, const struct timeval tv[2]) |
871 | static int eio__futimes (int fd, const struct timeval tv[2]) |
837 | { |
872 | { |
838 | errno = ENOSYS; |
873 | errno = ENOSYS; |
839 | return -1; |
874 | return -1; |
… | |
… | |
919 | */ |
954 | */ |
920 | { |
955 | { |
921 | off_t sbytes; |
956 | off_t sbytes; |
922 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
957 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
923 | |
958 | |
|
|
959 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
924 | /* freebsd' sendfile will return 0 on success */ |
960 | /* freebsd' sendfile will return 0 on success */ |
925 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
961 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
926 | /* not on e.g. EIO or EPIPE - sounds broken */ |
962 | /* not on e.g. EIO or EPIPE - sounds broken */ |
927 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
963 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
|
|
964 | res = sbytes; |
|
|
965 | #endif |
|
|
966 | |
|
|
967 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
968 | if (sbytes) |
928 | res = sbytes; |
969 | res = sbytes; |
929 | } |
970 | } |
930 | |
971 | |
931 | # elif defined (__APPLE__) |
972 | # elif defined (__APPLE__) |
932 | |
973 | |
… | |
… | |
1022 | } |
1063 | } |
1023 | |
1064 | |
1024 | static signed char |
1065 | static signed char |
1025 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1066 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1026 | { |
1067 | { |
1027 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
1068 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
1028 | : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; |
1069 | : a->inode < b->inode ? -1 |
|
|
1070 | : a->inode > b->inode ? 1 |
|
|
1071 | : 0; |
1029 | } |
1072 | } |
1030 | |
1073 | |
1031 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
1074 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
1032 | |
1075 | |
1033 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
1076 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
… | |
… | |
1039 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
1082 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
1040 | unsigned char *bit = bits; |
1083 | unsigned char *bit = bits; |
1041 | |
1084 | |
1042 | assert (CHAR_BIT == 8); |
1085 | assert (CHAR_BIT == 8); |
1043 | assert (sizeof (eio_dirent) * 8 < 256); |
1086 | assert (sizeof (eio_dirent) * 8 < 256); |
1044 | assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */ |
1087 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
1045 | assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */ |
1088 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
1046 | |
1089 | |
1047 | if (size <= EIO_SORT_FAST) |
1090 | if (size <= EIO_SORT_FAST) |
1048 | return; |
1091 | return; |
1049 | |
1092 | |
1050 | /* first prepare an array of bits to test in our radix sort */ |
1093 | /* first prepare an array of bits to test in our radix sort */ |
… | |
… | |
1205 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1248 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1206 | |
1249 | |
1207 | X_LOCK (wrklock); |
1250 | X_LOCK (wrklock); |
1208 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1251 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1209 | self->dirp = dirp = opendir (req->ptr1); |
1252 | self->dirp = dirp = opendir (req->ptr1); |
|
|
1253 | |
1210 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1254 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1211 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1255 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1212 | req->ptr2 = names = malloc (namesalloc); |
1256 | req->ptr2 = names = malloc (namesalloc); |
1213 | X_UNLOCK (wrklock); |
1257 | X_UNLOCK (wrklock); |
1214 | |
1258 | |
… | |
… | |
1226 | /* sort etc. */ |
1270 | /* sort etc. */ |
1227 | req->int1 = flags; |
1271 | req->int1 = flags; |
1228 | req->result = dentoffs; |
1272 | req->result = dentoffs; |
1229 | |
1273 | |
1230 | if (flags & EIO_READDIR_STAT_ORDER) |
1274 | if (flags & EIO_READDIR_STAT_ORDER) |
1231 | eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */ |
1275 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
1232 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1276 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1233 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1277 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1234 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1278 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1235 | else |
1279 | else |
1236 | { |
1280 | { |
… | |
… | |
1238 | eio_dirent *oth = dents + dentoffs; |
1282 | eio_dirent *oth = dents + dentoffs; |
1239 | eio_dirent *dir = dents; |
1283 | eio_dirent *dir = dents; |
1240 | |
1284 | |
1241 | /* now partition dirs to the front, and non-dirs to the back */ |
1285 | /* now partition dirs to the front, and non-dirs to the back */ |
1242 | /* by walking from both sides and swapping if necessary */ |
1286 | /* by walking from both sides and swapping if necessary */ |
1243 | /* also clear score, so it doesn't influence sorting */ |
|
|
1244 | while (oth > dir) |
1287 | while (oth > dir) |
1245 | { |
1288 | { |
1246 | if (dir->type == EIO_DT_DIR) |
1289 | if (dir->type == EIO_DT_DIR) |
1247 | ++dir; |
1290 | ++dir; |
1248 | else if ((--oth)->type == EIO_DT_DIR) |
1291 | else if ((--oth)->type == EIO_DT_DIR) |
… | |
… | |
1251 | |
1294 | |
1252 | ++dir; |
1295 | ++dir; |
1253 | } |
1296 | } |
1254 | } |
1297 | } |
1255 | |
1298 | |
1256 | /* now sort the dirs only */ |
1299 | /* now sort the dirs only (dirs all have the same score) */ |
1257 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1300 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1258 | } |
1301 | } |
1259 | |
1302 | |
1260 | break; |
1303 | break; |
1261 | } |
1304 | } |
… | |
… | |
1381 | break; |
1424 | break; |
1382 | } |
1425 | } |
1383 | } |
1426 | } |
1384 | } |
1427 | } |
1385 | |
1428 | |
|
|
1429 | #ifdef PAGESIZE |
|
|
1430 | # define eio_pagesize() PAGESIZE |
|
|
1431 | #else |
|
|
1432 | static intptr_t |
|
|
1433 | eio_pagesize (void) |
|
|
1434 | { |
|
|
1435 | static intptr_t page; |
|
|
1436 | |
|
|
1437 | if (!page) |
|
|
1438 | page = sysconf (_SC_PAGESIZE); |
|
|
1439 | |
|
|
1440 | return page; |
|
|
1441 | } |
|
|
1442 | #endif |
|
|
1443 | |
|
|
1444 | static void |
|
|
1445 | eio_page_align (void **addr, size_t *length) |
|
|
1446 | { |
|
|
1447 | intptr_t mask = eio_pagesize () - 1; |
|
|
1448 | |
|
|
1449 | /* round down addr */ |
|
|
1450 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1451 | |
|
|
1452 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1453 | *length += adj; |
|
|
1454 | |
|
|
1455 | /* round up length */ |
|
|
1456 | *length = (*length + mask) & ~mask; |
|
|
1457 | } |
|
|
1458 | |
|
|
1459 | #if !_POSIX_MEMLOCK |
|
|
1460 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1461 | #else |
|
|
1462 | |
|
|
1463 | static int |
|
|
1464 | eio__mlockall (int flags) |
|
|
1465 | { |
|
|
1466 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1467 | extern int mallopt (int, int); |
|
|
1468 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1469 | #endif |
|
|
1470 | |
|
|
1471 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1472 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1473 | { |
|
|
1474 | flags = 0 |
|
|
1475 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1476 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1477 | } |
|
|
1478 | |
|
|
1479 | return mlockall (flags); |
|
|
1480 | } |
|
|
1481 | #endif |
|
|
1482 | |
|
|
1483 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1484 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1485 | #else |
|
|
1486 | |
|
|
1487 | static int |
|
|
1488 | eio__mlock (void *addr, size_t length) |
|
|
1489 | { |
|
|
1490 | eio_page_align (&addr, &length); |
|
|
1491 | |
|
|
1492 | return mlock (addr, length); |
|
|
1493 | } |
|
|
1494 | |
|
|
1495 | #endif |
|
|
1496 | |
1386 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1497 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1387 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
1498 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
1388 | #else |
1499 | #else |
1389 | |
1500 | |
1390 | int |
1501 | int |
1391 | eio__msync (void *mem, size_t len, int flags) |
1502 | eio__msync (void *mem, size_t len, int flags) |
1392 | { |
1503 | { |
|
|
1504 | eio_page_align (&mem, &len); |
|
|
1505 | |
1393 | if (EIO_MS_ASYNC != MS_SYNC |
1506 | if (EIO_MS_ASYNC != MS_SYNC |
1394 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
1507 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
1395 | || EIO_MS_SYNC != MS_SYNC) |
1508 | || EIO_MS_SYNC != MS_SYNC) |
1396 | { |
1509 | { |
1397 | flags = 0 |
1510 | flags = 0 |
… | |
… | |
1406 | #endif |
1519 | #endif |
1407 | |
1520 | |
1408 | int |
1521 | int |
1409 | eio__mtouch (void *mem, size_t len, int flags) |
1522 | eio__mtouch (void *mem, size_t len, int flags) |
1410 | { |
1523 | { |
|
|
1524 | eio_page_align (&mem, &len); |
|
|
1525 | |
|
|
1526 | { |
1411 | intptr_t addr = (intptr_t)mem; |
1527 | intptr_t addr = (intptr_t)mem; |
1412 | intptr_t end = addr + len; |
1528 | intptr_t end = addr + len; |
1413 | #ifdef PAGESIZE |
1529 | intptr_t page = eio_pagesize (); |
1414 | const intptr_t page = PAGESIZE; |
|
|
1415 | #else |
|
|
1416 | static intptr_t page; |
|
|
1417 | |
1530 | |
1418 | if (!page) |
|
|
1419 | page = sysconf (_SC_PAGESIZE); |
|
|
1420 | #endif |
|
|
1421 | |
|
|
1422 | /* round down to start of page, although this is probably useless */ |
|
|
1423 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
|
|
1424 | |
|
|
1425 | if (addr < end) |
1531 | if (addr < end) |
1426 | if (flags & EIO_MT_MODIFY) /* modify */ |
1532 | if (flags & EIO_MT_MODIFY) /* modify */ |
1427 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1533 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1428 | else |
1534 | else |
1429 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
1535 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
1536 | } |
1430 | |
1537 | |
1431 | return 0; |
1538 | return 0; |
1432 | } |
1539 | } |
1433 | |
1540 | |
1434 | /*****************************************************************************/ |
1541 | /*****************************************************************************/ |
… | |
… | |
1468 | if (req) |
1575 | if (req) |
1469 | break; |
1576 | break; |
1470 | |
1577 | |
1471 | ++idle; |
1578 | ++idle; |
1472 | |
1579 | |
1473 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1580 | ts.tv_sec = time (0) + idle_timeout; |
1474 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1581 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1475 | { |
1582 | { |
1476 | if (idle > max_idle) |
1583 | if (idle > max_idle) |
1477 | { |
1584 | { |
1478 | --idle; |
1585 | --idle; |
… | |
… | |
1557 | return 0; \ |
1664 | return 0; \ |
1558 | } |
1665 | } |
1559 | |
1666 | |
1560 | static void eio_execute (etp_worker *self, eio_req *req) |
1667 | static void eio_execute (etp_worker *self, eio_req *req) |
1561 | { |
1668 | { |
1562 | errno = 0; |
|
|
1563 | |
|
|
1564 | switch (req->type) |
1669 | switch (req->type) |
1565 | { |
1670 | { |
1566 | case EIO_READ: ALLOC (req->size); |
1671 | case EIO_READ: ALLOC (req->size); |
1567 | req->result = req->offs >= 0 |
1672 | req->result = req->offs >= 0 |
1568 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1673 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
… | |
… | |
1600 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1705 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1601 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1706 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1602 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1707 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1603 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1708 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1604 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1709 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1605 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1710 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1606 | |
1711 | |
1607 | case EIO_READLINK: ALLOC (NAME_MAX); |
1712 | case EIO_READLINK: ALLOC (PATH_MAX); |
1608 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1713 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1609 | |
1714 | |
1610 | case EIO_SYNC: req->result = 0; sync (); break; |
1715 | case EIO_SYNC: req->result = 0; sync (); break; |
1611 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1716 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1612 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1717 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1613 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1718 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1614 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1719 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
|
|
1720 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
1721 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1615 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1722 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1616 | |
1723 | |
1617 | case EIO_READDIR: eio__scandir (req, self); break; |
1724 | case EIO_READDIR: eio__scandir (req, self); break; |
1618 | |
1725 | |
1619 | case EIO_BUSY: |
1726 | case EIO_BUSY: |
1620 | #ifdef _WIN32 |
1727 | #ifdef _WIN32 |
1621 | Sleep (req->nv1 * 1000.); |
1728 | Sleep (req->nv1 * 1e3); |
1622 | #else |
1729 | #else |
1623 | { |
1730 | { |
1624 | struct timeval tv; |
1731 | struct timeval tv; |
1625 | |
1732 | |
1626 | tv.tv_sec = req->nv1; |
1733 | tv.tv_sec = req->nv1; |
1627 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1734 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1628 | |
1735 | |
1629 | req->result = select (0, 0, 0, 0, &tv); |
1736 | req->result = select (0, 0, 0, 0, &tv); |
1630 | } |
1737 | } |
1631 | #endif |
1738 | #endif |
1632 | break; |
1739 | break; |
… | |
… | |
1647 | times = tv; |
1754 | times = tv; |
1648 | } |
1755 | } |
1649 | else |
1756 | else |
1650 | times = 0; |
1757 | times = 0; |
1651 | |
1758 | |
1652 | |
|
|
1653 | req->result = req->type == EIO_FUTIME |
1759 | req->result = req->type == EIO_FUTIME |
1654 | ? futimes (req->int1, times) |
1760 | ? futimes (req->int1, times) |
1655 | : utimes (req->ptr1, times); |
1761 | : utimes (req->ptr1, times); |
1656 | } |
1762 | } |
1657 | break; |
1763 | break; |
… | |
… | |
1666 | case EIO_CUSTOM: |
1772 | case EIO_CUSTOM: |
1667 | ((void (*)(eio_req *))req->feed) (req); |
1773 | ((void (*)(eio_req *))req->feed) (req); |
1668 | break; |
1774 | break; |
1669 | |
1775 | |
1670 | default: |
1776 | default: |
|
|
1777 | errno = ENOSYS; |
1671 | req->result = -1; |
1778 | req->result = -1; |
1672 | break; |
1779 | break; |
1673 | } |
1780 | } |
1674 | |
1781 | |
1675 | req->errorno = errno; |
1782 | req->errorno = errno; |
… | |
… | |
1705 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1812 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1706 | { |
1813 | { |
1707 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1814 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1708 | } |
1815 | } |
1709 | |
1816 | |
|
|
1817 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
1818 | { |
|
|
1819 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
1820 | } |
|
|
1821 | |
|
|
1822 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
1823 | { |
|
|
1824 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
1825 | } |
|
|
1826 | |
1710 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1827 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1711 | { |
1828 | { |
1712 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1829 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1713 | } |
1830 | } |
1714 | |
1831 | |
… | |
… | |
1848 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1965 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1849 | } |
1966 | } |
1850 | |
1967 | |
1851 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1968 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1852 | { |
1969 | { |
1853 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
1970 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1854 | } |
1971 | } |
1855 | |
1972 | |
1856 | static eio_req * |
1973 | static eio_req * |
1857 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1974 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1858 | { |
1975 | { |