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Comparing libeio/eio.c (file contents):
Revision 1.61 by root, Fri Feb 11 00:53:24 2011 UTC vs.
Revision 1.71 by root, Fri Jun 10 12:35:18 2011 UTC

… …
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
… …
54#include <sys/statvfs.h> 58#include <sys/statvfs.h>
55#include <limits.h> 59#include <limits.h>
56#include <fcntl.h> 60#include <fcntl.h>
57#include <assert.h> 61#include <assert.h>
58 62
63/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */
64/* intptr_t only comes form stdint.h, says idiot openbsd coder */
65#if HAVE_STDINT_H
66# include <stdint.h>
67#endif
68
59#ifndef EIO_FINISH 69#ifndef EIO_FINISH
60# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 70# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
61#endif 71#endif
62 72
63#ifndef EIO_DESTROY 73#ifndef EIO_DESTROY
… …
71#ifdef _WIN32 81#ifdef _WIN32
72 82
73 /*doh*/ 83 /*doh*/
74#else 84#else
75 85
76# include "config.h"
77# include <sys/time.h> 86# include <sys/time.h>
78# include <sys/select.h> 87# include <sys/select.h>
79# include <unistd.h> 88# include <unistd.h>
80# include <utime.h> 89# include <utime.h>
81# include <signal.h> 90# include <signal.h>
… …
132#endif 141#endif
133#ifndef D_NAMLEN 142#ifndef D_NAMLEN
134# define D_NAMLEN(de) strlen ((de)->d_name) 143# define D_NAMLEN(de) strlen ((de)->d_name)
135#endif 144#endif
136 145
137/* number of seconds after which an idle threads exit */
138#define IDLE_TIMEOUT 10
139
140/* used for struct dirent, AIX doesn't provide it */ 146/* used for struct dirent, AIX doesn't provide it */
141#ifndef NAME_MAX 147#ifndef NAME_MAX
142# define NAME_MAX 4096 148# define NAME_MAX 4096
143#endif 149#endif
144 150
… …
223static unsigned int max_poll_reqs; /* reslock */ 229static unsigned int max_poll_reqs; /* reslock */
224 230
225static volatile unsigned int nreqs; /* reqlock */ 231static volatile unsigned int nreqs; /* reqlock */
226static volatile unsigned int nready; /* reqlock */ 232static volatile unsigned int nready; /* reqlock */
227static volatile unsigned int npending; /* reqlock */ 233static volatile unsigned int npending; /* reqlock */
228static volatile unsigned int max_idle = 4; 234static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
235static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
229 236
230static xmutex_t wrklock = X_MUTEX_INIT; 237static xmutex_t wrklock;
231static xmutex_t reslock = X_MUTEX_INIT; 238static xmutex_t reslock;
232static xmutex_t reqlock = X_MUTEX_INIT; 239static xmutex_t reqlock;
233static xcond_t reqwait = X_COND_INIT; 240static xcond_t reqwait;
234 241
235#if !HAVE_PREADWRITE 242#if !HAVE_PREADWRITE
236/* 243/*
237 * make our pread/pwrite emulation safe against themselves, but not against 244 * make our pread/pwrite emulation safe against themselves, but not against
238 * normal read/write by using a mutex. slows down execution a lot, 245 * normal read/write by using a mutex. slows down execution a lot,
… …
368 } 375 }
369 376
370 abort (); 377 abort ();
371} 378}
372 379
380static void etp_thread_init (void)
381{
382 X_MUTEX_CREATE (wrklock);
383 X_MUTEX_CREATE (reslock);
384 X_MUTEX_CREATE (reqlock);
385 X_COND_CREATE (reqwait);
386}
387
373static void etp_atfork_prepare (void) 388static void etp_atfork_prepare (void)
374{ 389{
375 X_LOCK (wrklock); 390 X_LOCK (wrklock);
376 X_LOCK (reqlock); 391 X_LOCK (reqlock);
377 X_LOCK (reslock); 392 X_LOCK (reslock);
… …
415 idle = 0; 430 idle = 0;
416 nreqs = 0; 431 nreqs = 0;
417 nready = 0; 432 nready = 0;
418 npending = 0; 433 npending = 0;
419 434
420 etp_atfork_parent (); 435 etp_thread_init ();
421} 436}
422 437
423static void 438static void
424etp_once_init (void) 439etp_once_init (void)
425{ 440{
441 etp_thread_init ();
426 X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); 442 X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
427} 443}
428 444
429static int 445static int
430etp_init (void (*want_poll)(void), void (*done_poll)(void)) 446etp_init (void (*want_poll)(void), void (*done_poll)(void))
… …
621} 637}
622 638
623static void etp_set_max_idle (unsigned int nthreads) 639static void etp_set_max_idle (unsigned int nthreads)
624{ 640{
625 if (WORDACCESS_UNSAFE) X_LOCK (reqlock); 641 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
626 max_idle = nthreads <= 0 ? 1 : nthreads; 642 max_idle = nthreads;
643 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
644}
645
646static void etp_set_idle_timeout (unsigned int seconds)
647{
648 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
649 idle_timeout = seconds;
627 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); 650 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
628} 651}
629 652
630static void etp_set_min_parallel (unsigned int nthreads) 653static void etp_set_min_parallel (unsigned int nthreads)
631{ 654{
… …
757} 780}
758 781
759void eio_set_max_idle (unsigned int nthreads) 782void eio_set_max_idle (unsigned int nthreads)
760{ 783{
761 etp_set_max_idle (nthreads); 784 etp_set_max_idle (nthreads);
785}
786
787void eio_set_idle_timeout (unsigned int seconds)
788{
789 etp_set_idle_timeout (seconds);
762} 790}
763 791
764void eio_set_min_parallel (unsigned int nthreads) 792void eio_set_min_parallel (unsigned int nthreads)
765{ 793{
766 etp_set_min_parallel (nthreads); 794 etp_set_min_parallel (nthreads);
… …
914 942
915/* sendfile always needs emulation */ 943/* sendfile always needs emulation */
916static ssize_t 944static ssize_t
917eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) 945eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
918{ 946{
947 ssize_t written = 0;
919 ssize_t res; 948 ssize_t res;
920 949
921 if (!count) 950 if (!count)
922 return 0; 951 return 0;
923 952
953 for (;;)
954 {
924#if HAVE_SENDFILE 955#if HAVE_SENDFILE
925# if __linux 956# if __linux
957 off_t soffset = offset;
926 res = sendfile (ofd, ifd, &offset, count); 958 res = sendfile (ofd, ifd, &soffset, count);
927 959
928# elif __FreeBSD__ 960# elif __FreeBSD__
929 /* 961 /*
930 * Of course, the freebsd sendfile is a dire hack with no thoughts 962 * Of course, the freebsd sendfile is a dire hack with no thoughts
931 * wasted on making it similar to other I/O functions. 963 * wasted on making it similar to other I/O functions.
932 */ 964 */
933 {
934 off_t sbytes; 965 off_t sbytes;
935 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); 966 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
936 967
937 #if 0 /* according to the manpage, this is correct, but broken behaviour */ 968 #if 0 /* according to the manpage, this is correct, but broken behaviour */
938 /* freebsd' sendfile will return 0 on success */ 969 /* freebsd' sendfile will return 0 on success */
939 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ 970 /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
940 /* not on e.g. EIO or EPIPE - sounds broken */ 971 /* not on e.g. EIO or EPIPE - sounds broken */
941 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) 972 if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
942 res = sbytes; 973 res = sbytes;
943 #endif 974 #endif
944 975
945 /* according to source inspection, this is correct, and useful behaviour */ 976 /* according to source inspection, this is correct, and useful behaviour */
946 if (sbytes) 977 if (sbytes)
947 res = sbytes; 978 res = sbytes;
948 }
949 979
950# elif defined (__APPLE__) 980# elif defined (__APPLE__)
951
952 {
953 off_t sbytes = count; 981 off_t sbytes = count;
954 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); 982 res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
955 983
956 /* according to the manpage, sbytes is always valid */ 984 /* according to the manpage, sbytes is always valid */
957 if (sbytes) 985 if (sbytes)
958 res = sbytes; 986 res = sbytes;
959 }
960 987
961# elif __hpux 988# elif __hpux
962 res = sendfile (ofd, ifd, offset, count, 0, 0); 989 res = sendfile (ofd, ifd, offset, count, 0, 0);
963 990
964# elif __solaris 991# elif __solaris
965 {
966 struct sendfilevec vec; 992 struct sendfilevec vec;
967 size_t sbytes; 993 size_t sbytes;
968 994
969 vec.sfv_fd = ifd; 995 vec.sfv_fd = ifd;
970 vec.sfv_flag = 0; 996 vec.sfv_flag = 0;
971 vec.sfv_off = offset; 997 vec.sfv_off = offset;
972 vec.sfv_len = count; 998 vec.sfv_len = count;
973 999
974 res = sendfilev (ofd, &vec, 1, &sbytes); 1000 res = sendfilev (ofd, &vec, 1, &sbytes);
975 1001
976 if (res < 0 && sbytes) 1002 if (res < 0 && sbytes)
977 res = sbytes; 1003 res = sbytes;
978 }
979 1004
980# endif 1005# endif
981 1006
982#elif defined (_WIN32) 1007#elif defined (_WIN32)
983
984 /* does not work, just for documentation of what would need to be done */ 1008 /* does not work, just for documentation of what would need to be done */
985 { 1009 /* actually, cannot be done like this, as TransmitFile changes the file offset, */
1010 /* libeio guarantees that the file offset does not change, and windows */
1011 /* has no way to get an independent handle to the same file description */
986 HANDLE h = TO_SOCKET (ifd); 1012 HANDLE h = TO_SOCKET (ifd);
987 SetFilePointer (h, offset, 0, FILE_BEGIN); 1013 SetFilePointer (h, offset, 0, FILE_BEGIN);
988 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); 1014 res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
989 }
990 1015
991#else 1016#else
992 res = -1; 1017 res = -1;
993 errno = ENOSYS; 1018 errno = ENOSYS;
994#endif 1019#endif
995 1020
1021 /* we assume sendfile can copy at least 128mb in one go */
1022 if (res <= 128 * 1024 * 1024)
1023 {
1024 if (res > 0)
1025 written += res;
1026
1027 if (written)
1028 return written;
1029
1030 break;
1031 }
1032 else
1033 {
1034 /* if we requested more, then probably the kernel was lazy */
1035 written += res;
1036 offset += res;
1037 count -= res;
1038
1039 if (!count)
1040 return written;
1041 }
1042 }
1043
996 if (res < 0 1044 if (res < 0
997 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK 1045 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
998 /* BSDs */ 1046 /* BSDs */
999#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ 1047#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
1000 || errno == ENOTSUP 1048 || errno == ENOTSUP
1001#endif 1049#endif
… …
1041} 1089}
1042 1090
1043static signed char 1091static signed char
1044eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) 1092eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
1045{ 1093{
1046 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ 1094 return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
1047 : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; 1095 : a->inode < b->inode ? -1
1096 : a->inode > b->inode ? 1
1097 : 0;
1048} 1098}
1049 1099
1050#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 1100#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
1051 1101
1052#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ 1102#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
… …
1058 unsigned char bits [9 + sizeof (ino_t) * 8]; 1108 unsigned char bits [9 + sizeof (ino_t) * 8];
1059 unsigned char *bit = bits; 1109 unsigned char *bit = bits;
1060 1110
1061 assert (CHAR_BIT == 8); 1111 assert (CHAR_BIT == 8);
1062 assert (sizeof (eio_dirent) * 8 < 256); 1112 assert (sizeof (eio_dirent) * 8 < 256);
1063 assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */ 1113 assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
1064 assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */ 1114 assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
1065 1115
1066 if (size <= EIO_SORT_FAST) 1116 if (size <= EIO_SORT_FAST)
1067 return; 1117 return;
1068 1118
1069 /* first prepare an array of bits to test in our radix sort */ 1119 /* first prepare an array of bits to test in our radix sort */
… …
1224 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); 1274 flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
1225 1275
1226 X_LOCK (wrklock); 1276 X_LOCK (wrklock);
1227 /* the corresponding closedir is in ETP_WORKER_CLEAR */ 1277 /* the corresponding closedir is in ETP_WORKER_CLEAR */
1228 self->dirp = dirp = opendir (req->ptr1); 1278 self->dirp = dirp = opendir (req->ptr1);
1279
1229 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; 1280 req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
1230 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; 1281 req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
1231 req->ptr2 = names = malloc (namesalloc); 1282 req->ptr2 = names = malloc (namesalloc);
1232 X_UNLOCK (wrklock); 1283 X_UNLOCK (wrklock);
1233 1284
… …
1245 /* sort etc. */ 1296 /* sort etc. */
1246 req->int1 = flags; 1297 req->int1 = flags;
1247 req->result = dentoffs; 1298 req->result = dentoffs;
1248 1299
1249 if (flags & EIO_READDIR_STAT_ORDER) 1300 if (flags & EIO_READDIR_STAT_ORDER)
1250 eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */ 1301 eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
1251 else if (flags & EIO_READDIR_DIRS_FIRST) 1302 else if (flags & EIO_READDIR_DIRS_FIRST)
1252 if (flags & EIO_READDIR_FOUND_UNKNOWN) 1303 if (flags & EIO_READDIR_FOUND_UNKNOWN)
1253 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ 1304 eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
1254 else 1305 else
1255 { 1306 {
… …
1257 eio_dirent *oth = dents + dentoffs; 1308 eio_dirent *oth = dents + dentoffs;
1258 eio_dirent *dir = dents; 1309 eio_dirent *dir = dents;
1259 1310
1260 /* now partition dirs to the front, and non-dirs to the back */ 1311 /* now partition dirs to the front, and non-dirs to the back */
1261 /* by walking from both sides and swapping if necessary */ 1312 /* by walking from both sides and swapping if necessary */
1262 /* also clear score, so it doesn't influence sorting */
1263 while (oth > dir) 1313 while (oth > dir)
1264 { 1314 {
1265 if (dir->type == EIO_DT_DIR) 1315 if (dir->type == EIO_DT_DIR)
1266 ++dir; 1316 ++dir;
1267 else if ((--oth)->type == EIO_DT_DIR) 1317 else if ((--oth)->type == EIO_DT_DIR)
… …
1270 1320
1271 ++dir; 1321 ++dir;
1272 } 1322 }
1273 } 1323 }
1274 1324
1275 /* now sort the dirs only */ 1325 /* now sort the dirs only (dirs all have the same score) */
1276 eio_dent_sort (dents, dir - dents, 0, inode_bits); 1326 eio_dent_sort (dents, dir - dents, 0, inode_bits);
1277 } 1327 }
1278 1328
1279 break; 1329 break;
1280 } 1330 }
… …
1493} 1543}
1494 1544
1495#endif 1545#endif
1496 1546
1497int 1547int
1498eio__mtouch (void *mem, size_t len, int flags) 1548eio__mtouch (eio_req *req)
1499{ 1549{
1550 void *mem = req->ptr2;
1551 size_t len = req->size;
1552 int flags = req->int1;
1553
1500 eio_page_align (&mem, &len); 1554 eio_page_align (&mem, &len);
1501 1555
1502 { 1556 {
1503 intptr_t addr = (intptr_t)mem; 1557 intptr_t addr = (intptr_t)mem;
1504 intptr_t end = addr + len; 1558 intptr_t end = addr + len;
1505 intptr_t page = eio_pagesize (); 1559 intptr_t page = eio_pagesize ();
1506 1560
1507 if (addr < end) 1561 if (addr < end)
1508 if (flags & EIO_MT_MODIFY) /* modify */ 1562 if (flags & EIO_MT_MODIFY) /* modify */
1509 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); 1563 do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
1510 else 1564 else
1511 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); 1565 do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
1512 } 1566 }
1513 1567
1514 return 0; 1568 return 0;
1515} 1569}
1516 1570
… …
1551 if (req) 1605 if (req)
1552 break; 1606 break;
1553 1607
1554 ++idle; 1608 ++idle;
1555 1609
1556 ts.tv_sec = time (0) + IDLE_TIMEOUT; 1610 ts.tv_sec = time (0) + idle_timeout;
1557 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) 1611 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1558 { 1612 {
1559 if (idle > max_idle) 1613 if (idle > max_idle)
1560 { 1614 {
1561 --idle; 1615 --idle;
… …
1690 1744
1691 case EIO_SYNC: req->result = 0; sync (); break; 1745 case EIO_SYNC: req->result = 0; sync (); break;
1692 case EIO_FSYNC: req->result = fsync (req->int1); break; 1746 case EIO_FSYNC: req->result = fsync (req->int1); break;
1693 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; 1747 case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1694 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; 1748 case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
1695 case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; 1749 case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1696 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; 1750 case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
1697 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; 1751 case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
1698 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; 1752 case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1699 1753
1700 case EIO_READDIR: eio__scandir (req, self); break; 1754 case EIO_READDIR: eio__scandir (req, self); break;
… …
1744 case EIO_NOP: 1798 case EIO_NOP:
1745 req->result = 0; 1799 req->result = 0;
1746 break; 1800 break;
1747 1801
1748 case EIO_CUSTOM: 1802 case EIO_CUSTOM:
1749 ((void (*)(eio_req *))req->feed) (req); 1803 req->feed (req);
1750 break; 1804 break;
1751 1805
1752 default: 1806 default:
1753 errno = ENOSYS; 1807 errno = ENOSYS;
1754 req->result = -1; 1808 req->result = -1;
… …
1975eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) 2029eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
1976{ 2030{
1977 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); 2031 return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1978} 2032}
1979 2033
1980eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) 2034eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data)
1981{ 2035{
1982 REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; 2036 REQ (EIO_CUSTOM); req->feed = execute; SEND;
1983} 2037}
1984 2038
1985#endif 2039#endif
1986 2040
1987eio_req *eio_grp (eio_cb cb, void *data) 2041eio_req *eio_grp (eio_cb cb, void *data)

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