1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009 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 | * |
… | |
… | |
49 | #include <stdlib.h> |
49 | #include <stdlib.h> |
50 | #include <string.h> |
50 | #include <string.h> |
51 | #include <errno.h> |
51 | #include <errno.h> |
52 | #include <sys/types.h> |
52 | #include <sys/types.h> |
53 | #include <sys/stat.h> |
53 | #include <sys/stat.h> |
|
|
54 | #include <sys/statvfs.h> |
54 | #include <limits.h> |
55 | #include <limits.h> |
55 | #include <fcntl.h> |
56 | #include <fcntl.h> |
56 | #include <assert.h> |
57 | #include <assert.h> |
57 | |
58 | |
58 | #ifndef EIO_FINISH |
59 | #ifndef EIO_FINISH |
… | |
… | |
73 | #else |
74 | #else |
74 | |
75 | |
75 | # include "config.h" |
76 | # include "config.h" |
76 | # include <sys/time.h> |
77 | # include <sys/time.h> |
77 | # include <sys/select.h> |
78 | # include <sys/select.h> |
78 | # include <sys/mman.h> |
|
|
79 | # include <unistd.h> |
79 | # include <unistd.h> |
80 | # include <utime.h> |
80 | # include <utime.h> |
81 | # include <signal.h> |
81 | # include <signal.h> |
82 | # include <dirent.h> |
82 | # include <dirent.h> |
83 | |
83 | |
|
|
84 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
|
|
85 | # include <sys/mman.h> |
|
|
86 | #endif |
|
|
87 | |
84 | /* 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 */ |
85 | # if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) |
89 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
86 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
90 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
87 | # define D_INO(de) (de)->d_fileno |
91 | # define D_INO(de) (de)->d_fileno |
88 | # define D_NAMLEN(de) (de)->d_namlen |
92 | # define D_NAMLEN(de) (de)->d_namlen |
89 | # elif defined(__linux) || defined(d_ino) || _XOPEN_SOURCE >= 600 |
93 | # elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
90 | # define D_INO(de) (de)->d_ino |
94 | # define D_INO(de) (de)->d_ino |
91 | # endif |
95 | # endif |
92 | |
96 | |
93 | #ifdef _D_EXACT_NAMLEN |
97 | #ifdef _D_EXACT_NAMLEN |
94 | # undef D_NAMLEN |
98 | # undef D_NAMLEN |
… | |
… | |
106 | #endif |
110 | #endif |
107 | |
111 | |
108 | #if HAVE_SENDFILE |
112 | #if HAVE_SENDFILE |
109 | # if __linux |
113 | # if __linux |
110 | # include <sys/sendfile.h> |
114 | # include <sys/sendfile.h> |
111 | # elif __freebsd |
115 | # elif __FreeBSD__ || defined __APPLE__ |
112 | # include <sys/socket.h> |
116 | # include <sys/socket.h> |
113 | # include <sys/uio.h> |
117 | # include <sys/uio.h> |
114 | # elif __hpux |
118 | # elif __hpux |
115 | # include <sys/socket.h> |
119 | # include <sys/socket.h> |
116 | # elif __solaris /* not yet */ |
120 | # elif __solaris |
117 | # include <sys/sendfile.h> |
121 | # include <sys/sendfile.h> |
118 | # else |
122 | # else |
119 | # error sendfile support requested but not available |
123 | # error sendfile support requested but not available |
120 | # endif |
124 | # endif |
121 | #endif |
125 | #endif |
… | |
… | |
128 | #endif |
132 | #endif |
129 | #ifndef D_NAMLEN |
133 | #ifndef D_NAMLEN |
130 | # define D_NAMLEN(de) strlen ((de)->d_name) |
134 | # define D_NAMLEN(de) strlen ((de)->d_name) |
131 | #endif |
135 | #endif |
132 | |
136 | |
133 | /* number of seconds after which an idle threads exit */ |
|
|
134 | #define IDLE_TIMEOUT 10 |
|
|
135 | |
|
|
136 | /* used for struct dirent, AIX doesn't provide it */ |
137 | /* used for struct dirent, AIX doesn't provide it */ |
137 | #ifndef NAME_MAX |
138 | #ifndef NAME_MAX |
138 | # define NAME_MAX 4096 |
139 | # define NAME_MAX 4096 |
|
|
140 | #endif |
|
|
141 | |
|
|
142 | /* used for readlink etc. */ |
|
|
143 | #ifndef PATH_MAX |
|
|
144 | # define PATH_MAX 4096 |
139 | #endif |
145 | #endif |
140 | |
146 | |
141 | /* buffer size for various temporary buffers */ |
147 | /* buffer size for various temporary buffers */ |
142 | #define EIO_BUFSIZE 65536 |
148 | #define EIO_BUFSIZE 65536 |
143 | |
149 | |
… | |
… | |
214 | static unsigned int max_poll_reqs; /* reslock */ |
220 | static unsigned int max_poll_reqs; /* reslock */ |
215 | |
221 | |
216 | static volatile unsigned int nreqs; /* reqlock */ |
222 | static volatile unsigned int nreqs; /* reqlock */ |
217 | static volatile unsigned int nready; /* reqlock */ |
223 | static volatile unsigned int nready; /* reqlock */ |
218 | static volatile unsigned int npending; /* reqlock */ |
224 | static volatile unsigned int npending; /* reqlock */ |
219 | 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 */ |
220 | |
227 | |
221 | static mutex_t wrklock = X_MUTEX_INIT; |
228 | static xmutex_t wrklock; |
222 | static mutex_t reslock = X_MUTEX_INIT; |
229 | static xmutex_t reslock; |
223 | static mutex_t reqlock = X_MUTEX_INIT; |
230 | static xmutex_t reqlock; |
224 | static cond_t reqwait = X_COND_INIT; |
231 | static xcond_t reqwait; |
225 | |
232 | |
226 | #if !HAVE_PREADWRITE |
233 | #if !HAVE_PREADWRITE |
227 | /* |
234 | /* |
228 | * make our pread/pwrite emulation safe against themselves, but not against |
235 | * make our pread/pwrite emulation safe against themselves, but not against |
229 | * 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, |
230 | * but that's your problem, not mine. |
237 | * but that's your problem, not mine. |
231 | */ |
238 | */ |
232 | static mutex_t preadwritelock = X_MUTEX_INIT; |
239 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
233 | #endif |
240 | #endif |
234 | |
241 | |
235 | typedef struct etp_worker |
242 | typedef struct etp_worker |
236 | { |
243 | { |
237 | /* locked by wrklock */ |
244 | /* locked by wrklock */ |
238 | struct etp_worker *prev, *next; |
245 | struct etp_worker *prev, *next; |
239 | |
246 | |
240 | thread_t tid; |
247 | xthread_t tid; |
241 | |
248 | |
242 | /* locked by reslock, reqlock or wrklock */ |
249 | /* locked by reslock, reqlock or wrklock */ |
243 | ETP_REQ *req; /* currently processed request */ |
250 | ETP_REQ *req; /* currently processed request */ |
244 | |
251 | |
245 | ETP_WORKER_COMMON |
252 | ETP_WORKER_COMMON |
… | |
… | |
359 | } |
366 | } |
360 | |
367 | |
361 | abort (); |
368 | abort (); |
362 | } |
369 | } |
363 | |
370 | |
|
|
371 | static void etp_thread_init (void) |
|
|
372 | { |
|
|
373 | X_MUTEX_CREATE (wrklock); |
|
|
374 | X_MUTEX_CREATE (reslock); |
|
|
375 | X_MUTEX_CREATE (reqlock); |
|
|
376 | X_COND_CREATE (reqwait); |
|
|
377 | } |
|
|
378 | |
364 | static void etp_atfork_prepare (void) |
379 | static void etp_atfork_prepare (void) |
365 | { |
380 | { |
366 | X_LOCK (wrklock); |
381 | X_LOCK (wrklock); |
367 | X_LOCK (reqlock); |
382 | X_LOCK (reqlock); |
368 | X_LOCK (reslock); |
383 | X_LOCK (reslock); |
… | |
… | |
406 | idle = 0; |
421 | idle = 0; |
407 | nreqs = 0; |
422 | nreqs = 0; |
408 | nready = 0; |
423 | nready = 0; |
409 | npending = 0; |
424 | npending = 0; |
410 | |
425 | |
411 | etp_atfork_parent (); |
426 | etp_thread_init (); |
412 | } |
427 | } |
413 | |
428 | |
414 | static void |
429 | static void |
415 | etp_once_init (void) |
430 | etp_once_init (void) |
416 | { |
431 | { |
|
|
432 | etp_thread_init (); |
417 | 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); |
418 | } |
434 | } |
419 | |
435 | |
420 | static int |
436 | static int |
421 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
437 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
… | |
… | |
612 | } |
628 | } |
613 | |
629 | |
614 | static void etp_set_max_idle (unsigned int nthreads) |
630 | static void etp_set_max_idle (unsigned int nthreads) |
615 | { |
631 | { |
616 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
632 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
617 | 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; |
618 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
641 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
619 | } |
642 | } |
620 | |
643 | |
621 | static void etp_set_min_parallel (unsigned int nthreads) |
644 | static void etp_set_min_parallel (unsigned int nthreads) |
622 | { |
645 | { |
… | |
… | |
750 | void eio_set_max_idle (unsigned int nthreads) |
773 | void eio_set_max_idle (unsigned int nthreads) |
751 | { |
774 | { |
752 | etp_set_max_idle (nthreads); |
775 | etp_set_max_idle (nthreads); |
753 | } |
776 | } |
754 | |
777 | |
|
|
778 | void eio_set_idle_timeout (unsigned int seconds) |
|
|
779 | { |
|
|
780 | etp_set_idle_timeout (seconds); |
|
|
781 | } |
|
|
782 | |
755 | void eio_set_min_parallel (unsigned int nthreads) |
783 | void eio_set_min_parallel (unsigned int nthreads) |
756 | { |
784 | { |
757 | etp_set_min_parallel (nthreads); |
785 | etp_set_min_parallel (nthreads); |
758 | } |
786 | } |
759 | |
787 | |
… | |
… | |
807 | |
835 | |
808 | return res; |
836 | return res; |
809 | } |
837 | } |
810 | #endif |
838 | #endif |
811 | |
839 | |
812 | #ifndef HAVE_FUTIMES |
840 | #ifndef HAVE_UTIMES |
813 | |
841 | |
814 | # undef utimes |
842 | # undef utimes |
815 | # undef futimes |
|
|
816 | # define utimes(path,times) eio__utimes (path, times) |
843 | # define utimes(path,times) eio__utimes (path, times) |
817 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
818 | |
844 | |
819 | static int |
845 | static int |
820 | eio__utimes (const char *filename, const struct timeval times[2]) |
846 | eio__utimes (const char *filename, const struct timeval times[2]) |
821 | { |
847 | { |
822 | if (times) |
848 | if (times) |
… | |
… | |
829 | return utime (filename, &buf); |
855 | return utime (filename, &buf); |
830 | } |
856 | } |
831 | else |
857 | else |
832 | return utime (filename, 0); |
858 | return utime (filename, 0); |
833 | } |
859 | } |
|
|
860 | |
|
|
861 | #endif |
|
|
862 | |
|
|
863 | #ifndef HAVE_FUTIMES |
|
|
864 | |
|
|
865 | # undef futimes |
|
|
866 | # define futimes(fd,times) eio__futimes (fd, times) |
834 | |
867 | |
835 | static int eio__futimes (int fd, const struct timeval tv[2]) |
868 | static int eio__futimes (int fd, const struct timeval tv[2]) |
836 | { |
869 | { |
837 | errno = ENOSYS; |
870 | errno = ENOSYS; |
838 | return -1; |
871 | return -1; |
… | |
… | |
909 | |
942 | |
910 | #if HAVE_SENDFILE |
943 | #if HAVE_SENDFILE |
911 | # if __linux |
944 | # if __linux |
912 | res = sendfile (ofd, ifd, &offset, count); |
945 | res = sendfile (ofd, ifd, &offset, count); |
913 | |
946 | |
914 | # elif __freebsd |
947 | # elif __FreeBSD__ |
915 | /* |
948 | /* |
916 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
949 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
917 | * wasted on making it similar to other I/O functions. |
950 | * wasted on making it similar to other I/O functions. |
918 | */ |
951 | */ |
919 | { |
952 | { |
920 | off_t sbytes; |
953 | off_t sbytes; |
921 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
954 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
922 | |
955 | |
923 | if (res < 0 && sbytes) |
956 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
924 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
957 | /* freebsd' sendfile will return 0 on success */ |
|
|
958 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
959 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
960 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
|
|
961 | res = sbytes; |
|
|
962 | #endif |
|
|
963 | |
|
|
964 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
965 | if (sbytes) |
|
|
966 | res = sbytes; |
|
|
967 | } |
|
|
968 | |
|
|
969 | # elif defined (__APPLE__) |
|
|
970 | |
|
|
971 | { |
|
|
972 | off_t sbytes = count; |
|
|
973 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
974 | |
|
|
975 | /* according to the manpage, sbytes is always valid */ |
|
|
976 | if (sbytes) |
925 | res = sbytes; |
977 | res = sbytes; |
926 | } |
978 | } |
927 | |
979 | |
928 | # elif __hpux |
980 | # elif __hpux |
929 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
981 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
… | |
… | |
943 | if (res < 0 && sbytes) |
995 | if (res < 0 && sbytes) |
944 | res = sbytes; |
996 | res = sbytes; |
945 | } |
997 | } |
946 | |
998 | |
947 | # endif |
999 | # endif |
|
|
1000 | |
|
|
1001 | #elif defined (_WIN32) |
|
|
1002 | |
|
|
1003 | /* does not work, just for documentation of what would need to be done */ |
|
|
1004 | { |
|
|
1005 | HANDLE h = TO_SOCKET (ifd); |
|
|
1006 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
1007 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
1008 | } |
|
|
1009 | |
948 | #else |
1010 | #else |
949 | res = -1; |
1011 | res = -1; |
950 | errno = ENOSYS; |
1012 | errno = ENOSYS; |
951 | #endif |
1013 | #endif |
952 | |
1014 | |
953 | if (res < 0 |
1015 | if (res < 0 |
954 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1016 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1017 | /* BSDs */ |
|
|
1018 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
1019 | || errno == ENOTSUP |
|
|
1020 | #endif |
|
|
1021 | || errno == EOPNOTSUPP /* BSDs */ |
955 | #if __solaris |
1022 | #if __solaris |
956 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1023 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
957 | #endif |
1024 | #endif |
958 | ) |
1025 | ) |
959 | ) |
1026 | ) |
… | |
… | |
1352 | break; |
1419 | break; |
1353 | } |
1420 | } |
1354 | } |
1421 | } |
1355 | } |
1422 | } |
1356 | |
1423 | |
|
|
1424 | #ifdef PAGESIZE |
|
|
1425 | # define eio_pagesize() PAGESIZE |
|
|
1426 | #else |
|
|
1427 | static intptr_t |
|
|
1428 | eio_pagesize (void) |
|
|
1429 | { |
|
|
1430 | static intptr_t page; |
|
|
1431 | |
|
|
1432 | if (!page) |
|
|
1433 | page = sysconf (_SC_PAGESIZE); |
|
|
1434 | |
|
|
1435 | return page; |
|
|
1436 | } |
|
|
1437 | #endif |
|
|
1438 | |
|
|
1439 | static void |
|
|
1440 | eio_page_align (void **addr, size_t *length) |
|
|
1441 | { |
|
|
1442 | intptr_t mask = eio_pagesize () - 1; |
|
|
1443 | |
|
|
1444 | /* round down addr */ |
|
|
1445 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1446 | |
|
|
1447 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1448 | *length += adj; |
|
|
1449 | |
|
|
1450 | /* round up length */ |
|
|
1451 | *length = (*length + mask) & ~mask; |
|
|
1452 | } |
|
|
1453 | |
|
|
1454 | #if !_POSIX_MEMLOCK |
|
|
1455 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1456 | #else |
|
|
1457 | |
|
|
1458 | static int |
|
|
1459 | eio__mlockall (int flags) |
|
|
1460 | { |
|
|
1461 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1462 | extern int mallopt (int, int); |
|
|
1463 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1464 | #endif |
|
|
1465 | |
|
|
1466 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1467 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1468 | { |
|
|
1469 | flags = 0 |
|
|
1470 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1471 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1472 | } |
|
|
1473 | |
|
|
1474 | return mlockall (flags); |
|
|
1475 | } |
|
|
1476 | #endif |
|
|
1477 | |
|
|
1478 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1479 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1480 | #else |
|
|
1481 | |
|
|
1482 | static int |
|
|
1483 | eio__mlock (void *addr, size_t length) |
|
|
1484 | { |
|
|
1485 | eio_page_align (&addr, &length); |
|
|
1486 | |
|
|
1487 | return mlock (addr, length); |
|
|
1488 | } |
|
|
1489 | |
|
|
1490 | #endif |
|
|
1491 | |
1357 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1492 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
1358 | # undef msync |
|
|
1359 | # define msync(a,b,c) ((errno = ENOSYS), -1) |
1493 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1494 | #else |
|
|
1495 | |
|
|
1496 | int |
|
|
1497 | eio__msync (void *mem, size_t len, int flags) |
|
|
1498 | { |
|
|
1499 | eio_page_align (&mem, &len); |
|
|
1500 | |
|
|
1501 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1502 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1503 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1504 | { |
|
|
1505 | flags = 0 |
|
|
1506 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1507 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1508 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1509 | } |
|
|
1510 | |
|
|
1511 | return msync (mem, len, flags); |
|
|
1512 | } |
|
|
1513 | |
1360 | #endif |
1514 | #endif |
1361 | |
1515 | |
1362 | int |
1516 | int |
1363 | eio__mtouch (void *mem, size_t len, int flags) |
1517 | eio__mtouch (void *mem, size_t len, int flags) |
1364 | { |
1518 | { |
|
|
1519 | eio_page_align (&mem, &len); |
|
|
1520 | |
|
|
1521 | { |
1365 | intptr_t addr = (intptr_t)mem; |
1522 | intptr_t addr = (intptr_t)mem; |
1366 | intptr_t end = addr + len; |
1523 | intptr_t end = addr + len; |
1367 | #ifdef PAGESIZE |
1524 | intptr_t page = eio_pagesize (); |
1368 | const intptr_t page = PAGESIZE; |
|
|
1369 | #else |
|
|
1370 | static intptr_t page; |
|
|
1371 | |
1525 | |
1372 | if (!page) |
|
|
1373 | page = sysconf (_SC_PAGESIZE); |
|
|
1374 | #endif |
|
|
1375 | |
|
|
1376 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
|
|
1377 | |
|
|
1378 | if (addr < end) |
1526 | if (addr < end) |
1379 | if (flags) /* modify */ |
1527 | if (flags & EIO_MT_MODIFY) /* modify */ |
1380 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1528 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1381 | else |
1529 | else |
1382 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
1530 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
1531 | } |
1383 | |
1532 | |
1384 | return 0; |
1533 | return 0; |
1385 | } |
1534 | } |
1386 | |
1535 | |
1387 | /*****************************************************************************/ |
1536 | /*****************************************************************************/ |
… | |
… | |
1421 | if (req) |
1570 | if (req) |
1422 | break; |
1571 | break; |
1423 | |
1572 | |
1424 | ++idle; |
1573 | ++idle; |
1425 | |
1574 | |
1426 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1575 | ts.tv_sec = time (0) + idle_timeout; |
1427 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1576 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1428 | { |
1577 | { |
1429 | if (idle > max_idle) |
1578 | if (idle > max_idle) |
1430 | { |
1579 | { |
1431 | --idle; |
1580 | --idle; |
… | |
… | |
1510 | return 0; \ |
1659 | return 0; \ |
1511 | } |
1660 | } |
1512 | |
1661 | |
1513 | static void eio_execute (etp_worker *self, eio_req *req) |
1662 | static void eio_execute (etp_worker *self, eio_req *req) |
1514 | { |
1663 | { |
1515 | errno = 0; |
|
|
1516 | |
|
|
1517 | switch (req->type) |
1664 | switch (req->type) |
1518 | { |
1665 | { |
1519 | case EIO_READ: ALLOC (req->size); |
1666 | case EIO_READ: ALLOC (req->size); |
1520 | req->result = req->offs >= 0 |
1667 | req->result = req->offs >= 0 |
1521 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1668 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
… | |
… | |
1532 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1679 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1533 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1680 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1534 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1681 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1535 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1682 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1536 | |
1683 | |
|
|
1684 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1685 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1686 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1687 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1688 | |
1537 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1689 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1538 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1690 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1539 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1691 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1540 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1692 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1541 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
1693 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
… | |
… | |
1548 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1700 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1549 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1701 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1550 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1702 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1551 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1703 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1552 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1704 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1553 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1705 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1554 | |
1706 | |
1555 | case EIO_READLINK: ALLOC (NAME_MAX); |
1707 | case EIO_READLINK: ALLOC (PATH_MAX); |
1556 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1708 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1557 | |
1709 | |
1558 | case EIO_SYNC: req->result = 0; sync (); break; |
1710 | case EIO_SYNC: req->result = 0; sync (); break; |
1559 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1711 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1560 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1712 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1561 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
1713 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1562 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1714 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
|
|
1715 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
1716 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1563 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1717 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1564 | |
1718 | |
1565 | case EIO_READDIR: eio__scandir (req, self); break; |
1719 | case EIO_READDIR: eio__scandir (req, self); break; |
1566 | |
1720 | |
1567 | case EIO_BUSY: |
1721 | case EIO_BUSY: |
1568 | #ifdef _WIN32 |
1722 | #ifdef _WIN32 |
1569 | Sleep (req->nv1 * 1000.); |
1723 | Sleep (req->nv1 * 1e3); |
1570 | #else |
1724 | #else |
1571 | { |
1725 | { |
1572 | struct timeval tv; |
1726 | struct timeval tv; |
1573 | |
1727 | |
1574 | tv.tv_sec = req->nv1; |
1728 | tv.tv_sec = req->nv1; |
1575 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1729 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1576 | |
1730 | |
1577 | req->result = select (0, 0, 0, 0, &tv); |
1731 | req->result = select (0, 0, 0, 0, &tv); |
1578 | } |
1732 | } |
1579 | #endif |
1733 | #endif |
1580 | break; |
1734 | break; |
… | |
… | |
1595 | times = tv; |
1749 | times = tv; |
1596 | } |
1750 | } |
1597 | else |
1751 | else |
1598 | times = 0; |
1752 | times = 0; |
1599 | |
1753 | |
1600 | |
|
|
1601 | req->result = req->type == EIO_FUTIME |
1754 | req->result = req->type == EIO_FUTIME |
1602 | ? futimes (req->int1, times) |
1755 | ? futimes (req->int1, times) |
1603 | : utimes (req->ptr1, times); |
1756 | : utimes (req->ptr1, times); |
1604 | } |
1757 | } |
1605 | break; |
1758 | break; |
… | |
… | |
1614 | case EIO_CUSTOM: |
1767 | case EIO_CUSTOM: |
1615 | ((void (*)(eio_req *))req->feed) (req); |
1768 | ((void (*)(eio_req *))req->feed) (req); |
1616 | break; |
1769 | break; |
1617 | |
1770 | |
1618 | default: |
1771 | default: |
|
|
1772 | errno = ENOSYS; |
1619 | req->result = -1; |
1773 | req->result = -1; |
1620 | break; |
1774 | break; |
1621 | } |
1775 | } |
1622 | |
1776 | |
1623 | req->errorno = errno; |
1777 | req->errorno = errno; |
… | |
… | |
1653 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1807 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1654 | { |
1808 | { |
1655 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1809 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1656 | } |
1810 | } |
1657 | |
1811 | |
|
|
1812 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
1813 | { |
|
|
1814 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
1815 | } |
|
|
1816 | |
|
|
1817 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
1818 | { |
|
|
1819 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
1820 | } |
|
|
1821 | |
1658 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1822 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1659 | { |
1823 | { |
1660 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1824 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1661 | } |
1825 | } |
1662 | |
1826 | |
… | |
… | |
1686 | } |
1850 | } |
1687 | |
1851 | |
1688 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1852 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1689 | { |
1853 | { |
1690 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1854 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
|
|
1855 | } |
|
|
1856 | |
|
|
1857 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
1858 | { |
|
|
1859 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
1691 | } |
1860 | } |
1692 | |
1861 | |
1693 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1862 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1694 | { |
1863 | { |
1695 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1864 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
… | |
… | |
1769 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1938 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1770 | { |
1939 | { |
1771 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1940 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1772 | } |
1941 | } |
1773 | |
1942 | |
|
|
1943 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
1944 | { |
|
|
1945 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
1946 | } |
|
|
1947 | |
1774 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1948 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1775 | { |
1949 | { |
1776 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1950 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1777 | } |
1951 | } |
1778 | |
1952 | |
… | |
… | |
1786 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1960 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1787 | } |
1961 | } |
1788 | |
1962 | |
1789 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1963 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1790 | { |
1964 | { |
1791 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
1965 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1792 | } |
1966 | } |
1793 | |
1967 | |
1794 | static eio_req * |
1968 | static eio_req * |
1795 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1969 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1796 | { |
1970 | { |