[ViewVC] Diff of: cvs/libeio/eio.c

Comparing libeio/eio.c (file contents):
Revision 1.27 by root, Wed Oct 22 18:15:36 2008 UTC vs.
Revision 1.69 by root, Fri Jun 10 06:50:42 2011 UTC

…		…
1	/*	1	/*
2	* libeio implementation	2	* libeio implementation
3	*	3	*
4	* Copyright (c) 2007,2008 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"
		45
		46	#ifdef EIO_STACKSIZE
		47	# define XTHREAD_STACKSIZE EIO_STACKSIZE
		48	#endif
41	#include "xthread.h"	49	#include "xthread.h"
42		50
43	#include <errno.h>	51	#include <errno.h>
44	#include <stddef.h>	52	#include <stddef.h>
45	#include <stdlib.h>	53	#include <stdlib.h>
46	#include <string.h>	54	#include <string.h>
47	#include <errno.h>	55	#include <errno.h>
48	#include <sys/types.h>	56	#include <sys/types.h>
49	#include <sys/stat.h>	57	#include <sys/stat.h>
		58	#include <sys/statvfs.h>
50	#include <limits.h>	59	#include <limits.h>
51	#include <fcntl.h>	60	#include <fcntl.h>
52	#include <assert.h>	61	#include <assert.h>
53		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
54	#ifndef EIO_FINISH	69	#ifndef EIO_FINISH
55	# 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
56	#endif	71	#endif
57		72
58	#ifndef EIO_DESTROY	73	#ifndef EIO_DESTROY
…		…
64	#endif	79	#endif
65		80
66	#ifdef _WIN32	81	#ifdef _WIN32
67		82
68	/doh/	83	/doh/
69
70	#else	84	#else
71		85
72	# include "config.h"
73	# include <sys/time.h>	86	# include <sys/time.h>
74	# include <sys/select.h>	87	# include <sys/select.h>
75	# include <unistd.h>	88	# include <unistd.h>
76	# include <utime.h>	89	# include <utime.h>
77	# include <signal.h>	90	# include <signal.h>
78	# include <dirent.h>	91	# include <dirent.h>
79		92
		93	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
		94	# include <sys/mman.h>
		95	#endif
		96
		97	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		98	# if __FreeBSD__ \|\| defined __NetBSD__ \|\| defined __OpenBSD__
		99	# define _DIRENT_HAVE_D_TYPE /* sigh */
		100	# define D_INO(de) (de)->d_fileno
		101	# define D_NAMLEN(de) (de)->d_namlen
		102	# elif __linux \|\| defined d_ino \|\| _XOPEN_SOURCE >= 600
		103	# define D_INO(de) (de)->d_ino
		104	# endif
		105
		106	#ifdef _D_EXACT_NAMLEN
		107	# undef D_NAMLEN
		108	# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		109	#endif
		110
		111	# ifdef _DIRENT_HAVE_D_TYPE
		112	# define D_TYPE(de) (de)->d_type
		113	# endif
		114
80	# ifndef EIO_STRUCT_DIRENT	115	# ifndef EIO_STRUCT_DIRENT
81	# define EIO_STRUCT_DIRENT struct dirent	116	# define EIO_STRUCT_DIRENT struct dirent
82	# endif	117	# endif
83		118
84	#endif	119	#endif
85		120
86	#if HAVE_SENDFILE	121	#if HAVE_SENDFILE
87	# if __linux	122	# if __linux
88	# include <sys/sendfile.h>	123	# include <sys/sendfile.h>
89	# elif __freebsd	124	# elif __FreeBSD__ \|\| defined __APPLE__
90	# include <sys/socket.h>	125	# include <sys/socket.h>
91	# include <sys/uio.h>	126	# include <sys/uio.h>
92	# elif __hpux	127	# elif __hpux
93	# include <sys/socket.h>	128	# include <sys/socket.h>
94	# elif __solaris /* not yet */	129	# elif __solaris
95	# include <sys/sendfile.h>	130	# include <sys/sendfile.h>
96	# else	131	# else
97	# error sendfile support requested but not available	132	# error sendfile support requested but not available
98	# endif	133	# endif
99	#endif	134	#endif
100		135
101	/* number of seconds after which an idle threads exit */	136	#ifndef D_TYPE
102	#define IDLE_TIMEOUT 10	137	# define D_TYPE(de) 0
		138	#endif
		139	#ifndef D_INO
		140	# define D_INO(de) 0
		141	#endif
		142	#ifndef D_NAMLEN
		143	# define D_NAMLEN(de) strlen ((de)->d_name)
		144	#endif
103		145
104	/* used for struct dirent, AIX doesn't provide it */	146	/* used for struct dirent, AIX doesn't provide it */
105	#ifndef NAME_MAX	147	#ifndef NAME_MAX
106	# define NAME_MAX 4096	148	# define NAME_MAX 4096
		149	#endif
		150
		151	/* used for readlink etc. */
		152	#ifndef PATH_MAX
		153	# define PATH_MAX 4096
107	#endif	154	#endif
108		155
109	/* buffer size for various temporary buffers */	156	/* buffer size for various temporary buffers */
110	#define EIO_BUFSIZE 65536	157	#define EIO_BUFSIZE 65536
111		158
…		…
155	if (wrk->dirp) \	202	if (wrk->dirp) \
156	{ \	203	{ \
157	closedir (wrk->dirp); \	204	closedir (wrk->dirp); \
158	wrk->dirp = 0; \	205	wrk->dirp = 0; \
159	}	206	}
		207
160	#define ETP_WORKER_COMMON \	208	#define ETP_WORKER_COMMON \
161	void *dbuf; \	209	void *dbuf; \
162	DIR *dirp;	210	DIR *dirp;
163		211
164	/*****************************************************************************/	212	/*****************************************************************************/
165		213
166	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)	214	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
167		215
168	/* calculcate time difference in ~1/EIO_TICKS of a second */	216	/* calculate time difference in ~1/EIO_TICKS of a second */
169	static int tvdiff (struct timeval tv1, struct timeval tv2)	217	static int tvdiff (struct timeval tv1, struct timeval tv2)
170	{	218	{
171	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	219	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
172	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	220	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
173	}	221	}
…		…
181	static unsigned int max_poll_reqs; /* reslock */	229	static unsigned int max_poll_reqs; /* reslock */
182		230
183	static volatile unsigned int nreqs; /* reqlock */	231	static volatile unsigned int nreqs; /* reqlock */
184	static volatile unsigned int nready; /* reqlock */	232	static volatile unsigned int nready; /* reqlock */
185	static volatile unsigned int npending; /* reqlock */	233	static volatile unsigned int npending; /* reqlock */
186	static volatile unsigned int max_idle = 4;	234	static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */
		235	static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */
187		236
188	static mutex_t wrklock = X_MUTEX_INIT;	237	static xmutex_t wrklock;
189	static mutex_t reslock = X_MUTEX_INIT;	238	static xmutex_t reslock;
190	static mutex_t reqlock = X_MUTEX_INIT;	239	static xmutex_t reqlock;
191	static cond_t reqwait = X_COND_INIT;	240	static xcond_t reqwait;
192		241
193	#if !HAVE_PREADWRITE	242	#if !HAVE_PREADWRITE
194	/*	243	/*
195	* make our pread/pwrite emulation safe against themselves, but not against	244	* make our pread/pwrite emulation safe against themselves, but not against
196	* 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,
197	* but that's your problem, not mine.	246	* but that's your problem, not mine.
198	*/	247	*/
199	static mutex_t preadwritelock = X_MUTEX_INIT;	248	static xmutex_t preadwritelock = X_MUTEX_INIT;
200	#endif	249	#endif
201		250
202	typedef struct etp_worker	251	typedef struct etp_worker
203	{	252	{
204	/* locked by wrklock */	253	/* locked by wrklock */
205	struct etp_worker prev, next;	254	struct etp_worker prev, next;
206		255
207	thread_t tid;	256	xthread_t tid;
208		257
209	/* locked by reslock, reqlock or wrklock */	258	/* locked by reslock, reqlock or wrklock */
210	ETP_REQ req; / currently processed request */	259	ETP_REQ req; / currently processed request */
211		260
212	ETP_WORKER_COMMON	261	ETP_WORKER_COMMON
…		…
326	}	375	}
327		376
328	abort ();	377	abort ();
329	}	378	}
330		379
		380	static 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
331	static void etp_atfork_prepare (void)	388	static void etp_atfork_prepare (void)
332	{	389	{
333	X_LOCK (wrklock);	390	X_LOCK (wrklock);
334	X_LOCK (reqlock);	391	X_LOCK (reqlock);
335	X_LOCK (reslock);	392	X_LOCK (reslock);
…		…
373	idle = 0;	430	idle = 0;
374	nreqs = 0;	431	nreqs = 0;
375	nready = 0;	432	nready = 0;
376	npending = 0;	433	npending = 0;
377		434
378	etp_atfork_parent ();	435	etp_thread_init ();
379	}	436	}
380		437
381	static void	438	static void
382	etp_once_init (void)	439	etp_once_init (void)
383	{	440	{
		441	etp_thread_init ();
384	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);
385	}	443	}
386		444
387	static int	445	static int
388	etp_init (void (want_poll)(void), void (done_poll)(void))	446	etp_init (void (want_poll)(void), void (done_poll)(void))
…		…
565	}	623	}
566		624
567	static void etp_set_max_poll_time (double nseconds)	625	static void etp_set_max_poll_time (double nseconds)
568	{	626	{
569	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	627	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
570	max_poll_time = nseconds;	628	max_poll_time = nseconds * EIO_TICKS;
571	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	629	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
572	}	630	}
573		631
574	static void etp_set_max_poll_reqs (unsigned int maxreqs)	632	static void etp_set_max_poll_reqs (unsigned int maxreqs)
575	{	633	{
…		…
579	}	637	}
580		638
581	static void etp_set_max_idle (unsigned int nthreads)	639	static void etp_set_max_idle (unsigned int nthreads)
582	{	640	{
583	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	641	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
584	max_idle = nthreads <= 0 ? 1 : nthreads;	642	max_idle = nthreads;
		643	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		644	}
		645
		646	static void etp_set_idle_timeout (unsigned int seconds)
		647	{
		648	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		649	idle_timeout = seconds;
585	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	650	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
586	}	651	}
587		652
588	static void etp_set_min_parallel (unsigned int nthreads)	653	static void etp_set_min_parallel (unsigned int nthreads)
589	{	654	{
…		…
717	void eio_set_max_idle (unsigned int nthreads)	782	void eio_set_max_idle (unsigned int nthreads)
718	{	783	{
719	etp_set_max_idle (nthreads);	784	etp_set_max_idle (nthreads);
720	}	785	}
721		786
		787	void eio_set_idle_timeout (unsigned int seconds)
		788	{
		789	etp_set_idle_timeout (seconds);
		790	}
		791
722	void eio_set_min_parallel (unsigned int nthreads)	792	void eio_set_min_parallel (unsigned int nthreads)
723	{	793	{
724	etp_set_min_parallel (nthreads);	794	etp_set_min_parallel (nthreads);
725	}	795	}
726		796
…		…
767		837
768	X_LOCK (preadwritelock);	838	X_LOCK (preadwritelock);
769	ooffset = lseek (fd, 0, SEEK_CUR);	839	ooffset = lseek (fd, 0, SEEK_CUR);
770	lseek (fd, offset, SEEK_SET);	840	lseek (fd, offset, SEEK_SET);
771	res = write (fd, buf, count);	841	res = write (fd, buf, count);
772	lseek (fd, offset, SEEK_SET);	842	lseek (fd, ooffset, SEEK_SET);
773	X_UNLOCK (preadwritelock);	843	X_UNLOCK (preadwritelock);
774		844
775	return res;	845	return res;
776	}	846	}
777	#endif	847	#endif
778		848
779	#ifndef HAVE_FUTIMES	849	#ifndef HAVE_UTIMES
780		850
781	# undef utimes	851	# undef utimes
782	# undef futimes
783	# define utimes(path,times) eio__utimes (path, times)	852	# define utimes(path,times) eio__utimes (path, times)
784	# define futimes(fd,times) eio__futimes (fd, times)
785		853
786	static int	854	static int
787	eio__utimes (const char *filename, const struct timeval times[2])	855	eio__utimes (const char *filename, const struct timeval times[2])
788	{	856	{
789	if (times)	857	if (times)
…		…
796	return utime (filename, &buf);	864	return utime (filename, &buf);
797	}	865	}
798	else	866	else
799	return utime (filename, 0);	867	return utime (filename, 0);
800	}	868	}
		869
		870	#endif
		871
		872	#ifndef HAVE_FUTIMES
		873
		874	# undef futimes
		875	# define futimes(fd,times) eio__futimes (fd, times)
801		876
802	static int eio__futimes (int fd, const struct timeval tv[2])	877	static int eio__futimes (int fd, const struct timeval tv[2])
803	{	878	{
804	errno = ENOSYS;	879	errno = ENOSYS;
805	return -1;	880	return -1;
…		…
829	\| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);	904	\| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
830	}	905	}
831		906
832	res = sync_file_range (fd, offset, nbytes, flags);	907	res = sync_file_range (fd, offset, nbytes, flags);
833		908
834	if (res != ENOSYS)	909	if (!res \|\| errno != ENOSYS)
835	return res;	910	return res;
836	#endif	911	#endif
837		912
838	/* even though we could play tricks with the flags, it's better to always	913	/* even though we could play tricks with the flags, it's better to always
839	* call fdatasync, as thta matches the expectation of it's users best */	914	* call fdatasync, as that matches the expectation of its users best */
840	return fdatasync (fd);	915	return fdatasync (fd);
841	}	916	}
842		917
843	#if !HAVE_READAHEAD	918	#if !HAVE_READAHEAD
844	# undef readahead	919	# undef readahead
…		…
867		942
868	/* sendfile always needs emulation */	943	/* sendfile always needs emulation */
869	static ssize_t	944	static ssize_t
870	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)	945	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
871	{	946	{
		947	ssize_t written = 0;
872	ssize_t res;	948	ssize_t res;
873		949
874	if (!count)	950	if (!count)
875	return 0;	951	return 0;
876		952
		953	for (;;)
		954	{
877	#if HAVE_SENDFILE	955	#if HAVE_SENDFILE
878	# if __linux	956	# if __linux
		957	off_t soffset = offset;
879	res = sendfile (ofd, ifd, &offset, count);	958	res = sendfile (ofd, ifd, &soffset, count);
880		959
881	# elif __freebsd	960	# elif __FreeBSD__
882	/*	961	/*
883	* 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
884	* wasted on making it similar to other I/O functions.	963	* wasted on making it similar to other I/O functions.
885	*/	964	*/
886	{
887	off_t sbytes;	965	off_t sbytes;
888	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	966	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
889		967
890	if (res < 0 && sbytes)	968	#if 0 /* according to the manpage, this is correct, but broken behaviour */
891	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */	969	/* freebsd' sendfile will return 0 on success */
		970	/* freebsd 8 documents it as only setting sbytes on EINTR and EAGAIN, but /
		971	/* not on e.g. EIO or EPIPE - sounds broken */
		972	if ((res < 0 && (errno == EAGAIN \|\| errno == EINTR) && sbytes) \|\| res == 0)
892	res = sbytes;	973	res = sbytes;
893	}	974	#endif
		975
		976	/* according to source inspection, this is correct, and useful behaviour */
		977	if (sbytes)
		978	res = sbytes;
		979
		980	# elif defined (__APPLE__)
		981	off_t sbytes = count;
		982	res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
		983
		984	/* according to the manpage, sbytes is always valid */
		985	if (sbytes)
		986	res = sbytes;
894		987
895	# elif __hpux	988	# elif __hpux
896	res = sendfile (ofd, ifd, offset, count, 0, 0);	989	res = sendfile (ofd, ifd, offset, count, 0, 0);
897		990
898	# elif __solaris	991	# elif __solaris
899	{
900	struct sendfilevec vec;	992	struct sendfilevec vec;
901	size_t sbytes;	993	size_t sbytes;
902		994
903	vec.sfv_fd = ifd;	995	vec.sfv_fd = ifd;
904	vec.sfv_flag = 0;	996	vec.sfv_flag = 0;
905	vec.sfv_off = offset;	997	vec.sfv_off = offset;
906	vec.sfv_len = count;	998	vec.sfv_len = count;
907		999
908	res = sendfilev (ofd, &vec, 1, &sbytes);	1000	res = sendfilev (ofd, &vec, 1, &sbytes);
909		1001
910	if (res < 0 && sbytes)	1002	if (res < 0 && sbytes)
911	res = sbytes;	1003	res = sbytes;
912	}
913		1004
914	# endif	1005	# endif
		1006
		1007	#elif defined (_WIN32)
		1008	/* does not work, just for documentation of what would need to be done */
		1009	HANDLE h = TO_SOCKET (ifd);
		1010	SetFilePointer (h, offset, 0, FILE_BEGIN);
		1011	res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
		1012
915	#else	1013	#else
916	res = -1;	1014	res = -1;
917	errno = ENOSYS;	1015	errno = ENOSYS;
918	#endif	1016	#endif
919		1017
		1018	/* we assume sendfile can copy at least 128mb in one go */
		1019	if (res <= 128 * 1024 * 1024)
		1020	{
		1021	if (res > 0)
		1022	written += res;
		1023
		1024	if (written)
		1025	return written;
		1026
		1027	break;
		1028	}
		1029	else
		1030	{
		1031	/* if we requested more, then probably the kernel was lazy */
		1032	written += res;
		1033	offset += res;
		1034	count -= res;
		1035
		1036	if (!count)
		1037	return written;
		1038	}
		1039	}
		1040
920	if (res < 0	1041	if (res < 0
921	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK	1042	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
		1043	/* BSDs */
		1044	#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
		1045	\|\| errno == ENOTSUP
		1046	#endif
		1047	\|\| errno == EOPNOTSUPP /* BSDs */
922	#if __solaris	1048	#if __solaris
923	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE	1049	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
924	#endif	1050	#endif
925	)	1051	)
926	)	1052	)
…		…
957	}	1083	}
958		1084
959	return res;	1085	return res;
960	}	1086	}
961		1087
		1088	static signed char
		1089	eio_dent_cmp (const eio_dirent a, const eio_dirent b)
		1090	{
		1091	return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
		1092	: a->inode < b->inode ? -1
		1093	: a->inode > b->inode ? 1
		1094	: 0;
		1095	}
		1096
		1097	#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
		1098
		1099	#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
		1100	#define EIO_SORT_FAST 60 /* when to only use insertion sort */
		1101
		1102	static void
		1103	eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)
		1104	{
		1105	unsigned char bits [9 + sizeof (ino_t) * 8];
		1106	unsigned char *bit = bits;
		1107
		1108	assert (CHAR_BIT == 8);
		1109	assert (sizeof (eio_dirent) * 8 < 256);
		1110	assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */
		1111	assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */
		1112
		1113	if (size <= EIO_SORT_FAST)
		1114	return;
		1115
		1116	/* first prepare an array of bits to test in our radix sort */
		1117	/* try to take endianness into account, as well as differences in ino_t sizes */
		1118	/* inode_bits must contain all inodes ORed together */
		1119	/* which is used to skip bits that are 0 everywhere, which is very common */
		1120	{
		1121	ino_t endianness;
		1122	int i, j;
		1123
		1124	/* we store the byte offset of byte n into byte n of "endianness" */
		1125	for (i = 0; i < sizeof (ino_t); ++i)
		1126	((unsigned char *)&endianness)[i] = i;
		1127
		1128	*bit++ = 0;
		1129
		1130	for (i = 0; i < sizeof (ino_t); ++i)
		1131	{
		1132	/* shifting off the byte offsets out of "endianness" */
		1133	int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
		1134	endianness >>= 8;
		1135
		1136	for (j = 0; j < 8; ++j)
		1137	if (inode_bits & (((ino_t)1) << (i * 8 + j)))
		1138	*bit++ = offs + j;
		1139	}
		1140
		1141	for (j = 0; j < 8; ++j)
		1142	if (score_bits & (1 << j))
		1143	bit++ = offsetof (eio_dirent, score) 8 + j;
		1144	}
		1145
		1146	/* now actually do the sorting (a variant of MSD radix sort) */
		1147	{
		1148	eio_dirent base_stk [9 + sizeof (ino_t) 8], *base;
		1149	eio_dirent end_stk [9 + sizeof (ino_t) 8], *end;
		1150	unsigned char bit_stk [9 + sizeof (ino_t) 8];
		1151	int stk_idx = 0;
		1152
		1153	base_stk [stk_idx] = dents;
		1154	end_stk [stk_idx] = dents + size;
		1155	bit_stk [stk_idx] = bit - 1;
		1156
		1157	do
		1158	{
		1159	base = base_stk [stk_idx];
		1160	end = end_stk [stk_idx];
		1161	bit = bit_stk [stk_idx];
		1162
		1163	for (;;)
		1164	{
		1165	unsigned char O = *bit >> 3;
		1166	unsigned char M = 1 << (*bit & 7);
		1167
		1168	eio_dirent *a = base;
		1169	eio_dirent *b = end;
		1170
		1171	if (b - a < EIO_SORT_CUTOFF)
		1172	break;
		1173
		1174	/* now bit-partition the array on the bit */
		1175	/* this ugly asymmetric loop seems to perform much better than typical */
		1176	/* partition algos found in the literature */
		1177	do
		1178	if (!(((unsigned char *)a)[O] & M))
		1179	++a;
		1180	else if (!(((unsigned char *)--b)[O] & M))
		1181	{
		1182	eio_dirent tmp = a; a = b; b = tmp;
		1183	++a;
		1184	}
		1185	while (b > a);
		1186
		1187	/* next bit, or stop, if no bits left in this path */
		1188	if (!*--bit)
		1189	break;
		1190
		1191	base_stk [stk_idx] = a;
		1192	end_stk [stk_idx] = end;
		1193	bit_stk [stk_idx] = bit;
		1194	++stk_idx;
		1195
		1196	end = a;
		1197	}
		1198	}
		1199	while (stk_idx--);
		1200	}
		1201	}
		1202
		1203	static void
		1204	eio_dent_insertion_sort (eio_dirent *dents, int size)
		1205	{
		1206	/* first move the smallest element to the front, to act as a sentinel */
		1207	{
		1208	int i;
		1209	eio_dirent *min = dents;
		1210
		1211	/* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
		1212	for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
		1213	if (EIO_DENT_CMP (dents [i], <, *min))
		1214	min = &dents [i];
		1215
		1216	/* swap elements 0 and j (minimum) */
		1217	{
		1218	eio_dirent tmp = dents; dents = min; min = tmp;
		1219	}
		1220	}
		1221
		1222	/* then do standard insertion sort, assuming that all elements are >= dents [0] */
		1223	{
		1224	eio_dirent i, j;
		1225
		1226	for (i = dents + 1; i < dents + size; ++i)
		1227	{
		1228	eio_dirent value = *i;
		1229
		1230	for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
		1231	j [1] = j [0];
		1232
		1233	j [1] = value;
		1234	}
		1235	}
		1236	}
		1237
		1238	static void
		1239	eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)
		1240	{
		1241	if (size <= 1)
		1242	return; /* our insertion sort relies on size > 0 */
		1243
		1244	/* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
		1245	/* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
		1246	eio_dent_radix_sort (dents, size, score_bits, inode_bits);
		1247
		1248	/* use an insertion sort at the end, or for small arrays, */
		1249	/* as insertion sort is more efficient for small partitions */
		1250	eio_dent_insertion_sort (dents, size);
		1251	}
		1252
962	/* read a full directory */	1253	/* read a full directory */
963	static void	1254	static void
964	eio__scandir (eio_req req, etp_worker self)	1255	eio__scandir (eio_req req, etp_worker self)
965	{	1256	{
966	DIR *dirp;	1257	DIR *dirp;
967	EIO_STRUCT_DIRENT *entp;	1258	EIO_STRUCT_DIRENT *entp;
968	char name, names;	1259	char name, names;
969	int memlen = 4096;	1260	int namesalloc = 4096;
970	int memofs = 0;	1261	int namesoffs = 0;
		1262	int flags = req->int1;
		1263	eio_dirent *dents = 0;
		1264	int dentalloc = 128;
971	int res = 0;	1265	int dentoffs = 0;
		1266	ino_t inode_bits = 0;
		1267
		1268	req->result = -1;
		1269
		1270	if (!(flags & EIO_READDIR_DENTS))
		1271	flags &= ~(EIO_READDIR_DIRS_FIRST \| EIO_READDIR_STAT_ORDER);
972		1272
973	X_LOCK (wrklock);	1273	X_LOCK (wrklock);
974	/* the corresponding closedir is in ETP_WORKER_CLEAR */	1274	/* the corresponding closedir is in ETP_WORKER_CLEAR */
975	self->dirp = dirp = opendir (req->ptr1);	1275	self->dirp = dirp = opendir (req->ptr1);
		1276
976	req->flags \|= EIO_FLAG_PTR2_FREE;	1277	req->flags \|= EIO_FLAG_PTR1_FREE \| EIO_FLAG_PTR2_FREE;
		1278	req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
977	req->ptr2 = names = malloc (memlen);	1279	req->ptr2 = names = malloc (namesalloc);
978	X_UNLOCK (wrklock);	1280	X_UNLOCK (wrklock);
979		1281
980	if (dirp && names)	1282	if (dirp && names && (!flags \|\| dents))
981	for (;;)	1283	for (;;)
982	{	1284	{
983	errno = 0;	1285	errno = 0;
984	entp = readdir (dirp);	1286	entp = readdir (dirp);
985		1287
986	if (!entp)	1288	if (!entp)
		1289	{
		1290	if (errno)
		1291	break;
		1292
		1293	/* sort etc. */
		1294	req->int1 = flags;
		1295	req->result = dentoffs;
		1296
		1297	if (flags & EIO_READDIR_STAT_ORDER)
		1298	eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits);
		1299	else if (flags & EIO_READDIR_DIRS_FIRST)
		1300	if (flags & EIO_READDIR_FOUND_UNKNOWN)
		1301	eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
		1302	else
		1303	{
		1304	/* in this case, all is known, and we just put dirs first and sort them */
		1305	eio_dirent *oth = dents + dentoffs;
		1306	eio_dirent *dir = dents;
		1307
		1308	/* now partition dirs to the front, and non-dirs to the back */
		1309	/* by walking from both sides and swapping if necessary */
		1310	while (oth > dir)
		1311	{
		1312	if (dir->type == EIO_DT_DIR)
		1313	++dir;
		1314	else if ((--oth)->type == EIO_DT_DIR)
		1315	{
		1316	eio_dirent tmp = dir; dir = oth; oth = tmp;
		1317
		1318	++dir;
		1319	}
		1320	}
		1321
		1322	/* now sort the dirs only (dirs all have the same score) */
		1323	eio_dent_sort (dents, dir - dents, 0, inode_bits);
		1324	}
		1325
987	break;	1326	break;
		1327	}
988		1328
		1329	/* now add the entry to our list(s) */
989	name = entp->d_name;	1330	name = entp->d_name;
990		1331
		1332	/* skip . and .. entries */
991	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	1333	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
992	{	1334	{
993	int len = strlen (name) + 1;	1335	int len = D_NAMLEN (entp) + 1;
994		1336
995	res++;	1337	while (expect_false (namesoffs + len > namesalloc))
996
997	while (memofs + len > memlen)
998	{	1338	{
999	memlen *= 2;	1339	namesalloc *= 2;
1000	X_LOCK (wrklock);	1340	X_LOCK (wrklock);
1001	req->ptr2 = names = realloc (names, memlen);	1341	req->ptr2 = names = realloc (names, namesalloc);
1002	X_UNLOCK (wrklock);	1342	X_UNLOCK (wrklock);
1003		1343
1004	if (!names)	1344	if (!names)
1005	break;	1345	break;
1006	}	1346	}
1007		1347
1008	memcpy (names + memofs, name, len);	1348	memcpy (names + namesoffs, name, len);
		1349
		1350	if (dents)
		1351	{
		1352	struct eio_dirent *ent;
		1353
		1354	if (expect_false (dentoffs == dentalloc))
		1355	{
		1356	dentalloc *= 2;
		1357	X_LOCK (wrklock);
		1358	req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1359	X_UNLOCK (wrklock);
		1360
		1361	if (!dents)
		1362	break;
		1363	}
		1364
		1365	ent = dents + dentoffs;
		1366
		1367	ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
		1368	ent->namelen = len - 1;
		1369	ent->inode = D_INO (entp);
		1370
		1371	inode_bits \|= ent->inode;
		1372
		1373	switch (D_TYPE (entp))
		1374	{
		1375	default:
		1376	ent->type = EIO_DT_UNKNOWN;
		1377	flags \|= EIO_READDIR_FOUND_UNKNOWN;
		1378	break;
		1379
		1380	#ifdef DT_FIFO
		1381	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1382	#endif
		1383	#ifdef DT_CHR
		1384	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1385	#endif
		1386	#ifdef DT_MPC
		1387	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1388	#endif
		1389	#ifdef DT_DIR
		1390	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1391	#endif
		1392	#ifdef DT_NAM
		1393	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1394	#endif
		1395	#ifdef DT_BLK
		1396	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1397	#endif
		1398	#ifdef DT_MPB
		1399	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1400	#endif
		1401	#ifdef DT_REG
		1402	case DT_REG: ent->type = EIO_DT_REG; break;
		1403	#endif
		1404	#ifdef DT_NWK
		1405	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1406	#endif
		1407	#ifdef DT_CMP
		1408	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1409	#endif
		1410	#ifdef DT_LNK
		1411	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1412	#endif
		1413	#ifdef DT_SOCK
		1414	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1415	#endif
		1416	#ifdef DT_DOOR
		1417	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1418	#endif
		1419	#ifdef DT_WHT
		1420	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1421	#endif
		1422	}
		1423
		1424	ent->score = 7;
		1425
		1426	if (flags & EIO_READDIR_DIRS_FIRST)
		1427	{
		1428	if (ent->type == EIO_DT_UNKNOWN)
		1429	{
		1430	if (name == '.') / leading dots are likely directories, and, in any case, rare */
		1431	ent->score = 1;
		1432	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
		1433	ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
		1434	}
		1435	else if (ent->type == EIO_DT_DIR)
		1436	ent->score = 0;
		1437	}
		1438	}
		1439
1009	memofs += len;	1440	namesoffs += len;
		1441	++dentoffs;
		1442	}
		1443
		1444	if (EIO_CANCELLED (req))
		1445	{
		1446	errno = ECANCELED;
		1447	break;
1010	}	1448	}
1011	}	1449	}
1012
1013	if (errno)
1014	res = -1;
1015
1016	req->result = res;
1017	}	1450	}
1018		1451
1019	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
1020	# undef msync
1021	# define msync(a,b,c) ENOSYS
1022	#endif
1023
1024	int
1025	eio__mtouch (void *mem, size_t len, int flags)
1026	{
1027	intptr_t addr = (intptr_t)mem;
1028	intptr_t end = addr + len;
1029	#ifdef PAGESIZE	1452	#ifdef PAGESIZE
1030	const intptr_t page = PAGESIZE;	1453	# define eio_pagesize() PAGESIZE
1031	#else	1454	#else
		1455	static intptr_t
		1456	eio_pagesize (void)
		1457	{
1032	static intptr_t page;	1458	static intptr_t page;
1033		1459
1034	if (!page)	1460	if (!page)
1035	page = sysconf (_SC_PAGESIZE);	1461	page = sysconf (_SC_PAGESIZE);
		1462
		1463	return page;
		1464	}
		1465	#endif
		1466
		1467	static void
		1468	eio_page_align (void *addr, size_t length)
		1469	{
		1470	intptr_t mask = eio_pagesize () - 1;
		1471
		1472	/* round down addr */
		1473	intptr_t adj = mask & (intptr_t)*addr;
		1474
		1475	addr = (void )((intptr_t)*addr - adj);
		1476	*length += adj;
		1477
		1478	/* round up length */
		1479	length = (length + mask) & ~mask;
		1480	}
		1481
		1482	#if !_POSIX_MEMLOCK
		1483	# define eio__mlockall(a) ((errno = ENOSYS), -1)
		1484	#else
		1485
		1486	static int
		1487	eio__mlockall (int flags)
		1488	{
		1489	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1490	extern int mallopt (int, int);
		1491	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
1036	#endif	1492	#endif
1037		1493
1038	addr &= ~(page - 1); /* assume page size is always a power of two */	1494	if (EIO_MCL_CURRENT != MCL_CURRENT
		1495	\|\| EIO_MCL_FUTURE != MCL_FUTURE)
		1496	{
		1497	flags = 0
		1498	\| (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
		1499	\| (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
		1500	}
1039		1501
		1502	return mlockall (flags);
		1503	}
		1504	#endif
		1505
		1506	#if !_POSIX_MEMLOCK_RANGE
		1507	# define eio__mlock(a,b) ((errno = ENOSYS), -1)
		1508	#else
		1509
		1510	static int
		1511	eio__mlock (void *addr, size_t length)
		1512	{
		1513	eio_page_align (&addr, &length);
		1514
		1515	return mlock (addr, length);
		1516	}
		1517
		1518	#endif
		1519
		1520	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1521	# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
		1522	#else
		1523
		1524	int
		1525	eio__msync (void *mem, size_t len, int flags)
		1526	{
		1527	eio_page_align (&mem, &len);
		1528
		1529	if (EIO_MS_ASYNC != MS_SYNC
		1530	\|\| EIO_MS_INVALIDATE != MS_INVALIDATE
		1531	\|\| EIO_MS_SYNC != MS_SYNC)
		1532	{
		1533	flags = 0
		1534	\| (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
		1535	\| (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
		1536	\| (flags & EIO_MS_SYNC ? MS_SYNC : 0);
		1537	}
		1538
		1539	return msync (mem, len, flags);
		1540	}
		1541
		1542	#endif
		1543
		1544	int
		1545	eio__mtouch (eio_req *req)
		1546	{
		1547	void *mem = req->ptr2;
		1548	size_t len = req->size;
		1549	int flags = req->int1;
		1550
		1551	eio_page_align (&mem, &len);
		1552
		1553	{
		1554	intptr_t addr = (intptr_t)mem;
		1555	intptr_t end = addr + len;
		1556	intptr_t page = eio_pagesize ();
		1557
1040	if (addr < end)	1558	if (addr < end)
1041	if (flags) /* modify */	1559	if (flags & EIO_MT_MODIFY) /* modify */
1042	do { ((volatile sig_atomic_t )addr) \|= 0; } while ((addr += page) < len);	1560	do { ((volatile sig_atomic_t )addr) \|= 0; } while ((addr += page) < len && !EIO_CANCELLED (req));
1043	else	1561	else
1044	do { ((volatile sig_atomic_t )addr) ; } while ((addr += page) < len);	1562	do { ((volatile sig_atomic_t )addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req));
		1563	}
1045		1564
1046	return 0;	1565	return 0;
1047	}	1566	}
1048		1567
1049	/*****************************************************************************/	1568	/*****************************************************************************/
…		…
1083	if (req)	1602	if (req)
1084	break;	1603	break;
1085		1604
1086	++idle;	1605	++idle;
1087		1606
1088	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1607	ts.tv_sec = time (0) + idle_timeout;
1089	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	1608	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
1090	{	1609	{
1091	if (idle > max_idle)	1610	if (idle > max_idle)
1092	{	1611	{
1093	--idle;	1612	--idle;
…		…
1172	return 0; \	1691	return 0; \
1173	}	1692	}
1174		1693
1175	static void eio_execute (etp_worker self, eio_req req)	1694	static void eio_execute (etp_worker self, eio_req req)
1176	{	1695	{
1177	errno = 0;
1178
1179	switch (req->type)	1696	switch (req->type)
1180	{	1697	{
1181	case EIO_READ: ALLOC (req->size);	1698	case EIO_READ: ALLOC (req->size);
1182	req->result = req->offs >= 0	1699	req->result = req->offs >= 0
1183	? pread (req->int1, req->ptr2, req->size, req->offs)	1700	? pread (req->int1, req->ptr2, req->size, req->offs)
…		…
1194	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1711	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1195	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;	1712	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
1196	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));	1713	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
1197	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;	1714	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
1198		1715
		1716	case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1717	req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1718	case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
		1719	req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
		1720
1199	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;	1721	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1200	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;	1722	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1201	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;	1723	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
1202	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;	1724	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
1203	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;	1725	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
…		…
1210	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	1732	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1211	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	1733	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1212	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	1734	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1213	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	1735	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1214	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	1736	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1215	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;	1737	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
1216		1738
1217	case EIO_READLINK: ALLOC (NAME_MAX);	1739	case EIO_READLINK: ALLOC (PATH_MAX);
1218	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	1740	req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
1219		1741
1220	case EIO_SYNC: req->result = 0; sync (); break;	1742	case EIO_SYNC: req->result = 0; sync (); break;
1221	case EIO_FSYNC: req->result = fsync (req->int1); break;	1743	case EIO_FSYNC: req->result = fsync (req->int1); break;
1222	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	1744	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
1223	case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break;	1745	case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
		1746	case EIO_MTOUCH: req->result = eio__mtouch (req); break;
1224	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;	1747	case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
		1748	case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
1225	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;	1749	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1226		1750
1227	case EIO_READDIR: eio__scandir (req, self); break;	1751	case EIO_READDIR: eio__scandir (req, self); break;
1228		1752
1229	case EIO_BUSY:	1753	case EIO_BUSY:
1230	#ifdef _WIN32	1754	#ifdef _WIN32
1231	Sleep (req->nv1 * 1000.);	1755	Sleep (req->nv1 * 1e3);
1232	#else	1756	#else
1233	{	1757	{
1234	struct timeval tv;	1758	struct timeval tv;
1235		1759
1236	tv.tv_sec = req->nv1;	1760	tv.tv_sec = req->nv1;
1237	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;	1761	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
1238		1762
1239	req->result = select (0, 0, 0, 0, &tv);	1763	req->result = select (0, 0, 0, 0, &tv);
1240	}	1764	}
1241	#endif	1765	#endif
1242	break;	1766	break;
…		…
1257	times = tv;	1781	times = tv;
1258	}	1782	}
1259	else	1783	else
1260	times = 0;	1784	times = 0;
1261		1785
1262
1263	req->result = req->type == EIO_FUTIME	1786	req->result = req->type == EIO_FUTIME
1264	? futimes (req->int1, times)	1787	? futimes (req->int1, times)
1265	: utimes (req->ptr1, times);	1788	: utimes (req->ptr1, times);
1266	}	1789	}
1267	break;	1790	break;
…		…
1272	case EIO_NOP:	1795	case EIO_NOP:
1273	req->result = 0;	1796	req->result = 0;
1274	break;	1797	break;
1275		1798
1276	case EIO_CUSTOM:	1799	case EIO_CUSTOM:
1277	((void ()(eio_req ))req->feed) (req);	1800	req->feed (req);
1278	break;	1801	break;
1279		1802
1280	default:	1803	default:
		1804	errno = ENOSYS;
1281	req->result = -1;	1805	req->result = -1;
1282	break;	1806	break;
1283	}	1807	}
1284		1808
1285	req->errorno = errno;	1809	req->errorno = errno;
…		…
1315	eio_req eio_mtouch (void addr, size_t length, int flags, int pri, eio_cb cb, void *data)	1839	eio_req eio_mtouch (void addr, size_t length, int flags, int pri, eio_cb cb, void *data)
1316	{	1840	{
1317	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;	1841	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
1318	}	1842	}
1319		1843
		1844	eio_req eio_mlock (void addr, size_t length, int pri, eio_cb cb, void *data)
		1845	{
		1846	REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
		1847	}
		1848
		1849	eio_req eio_mlockall (int flags, int pri, eio_cb cb, void data)
		1850	{
		1851	REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
		1852	}
		1853
1320	eio_req eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void data)	1854	eio_req eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void data)
1321	{	1855	{
1322	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;	1856	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
1323	}	1857	}
1324		1858
…		…
1348	}	1882	}
1349		1883
1350	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)	1884	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)
1351	{	1885	{
1352	REQ (EIO_FSTAT); req->int1 = fd; SEND;	1886	REQ (EIO_FSTAT); req->int1 = fd; SEND;
		1887	}
		1888
		1889	eio_req eio_fstatvfs (int fd, int pri, eio_cb cb, void data)
		1890	{
		1891	REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
1353	}	1892	}
1354		1893
1355	eio_req eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void data)	1894	eio_req eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void data)
1356	{	1895	{
1357	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;	1896	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
…		…
1431	eio_req eio_lstat (const char path, int pri, eio_cb cb, void *data)	1970	eio_req eio_lstat (const char path, int pri, eio_cb cb, void *data)
1432	{	1971	{
1433	return eio__1path (EIO_LSTAT, path, pri, cb, data);	1972	return eio__1path (EIO_LSTAT, path, pri, cb, data);
1434	}	1973	}
1435		1974
		1975	eio_req eio_statvfs (const char path, int pri, eio_cb cb, void *data)
		1976	{
		1977	return eio__1path (EIO_STATVFS, path, pri, cb, data);
		1978	}
		1979
1436	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data)	1980	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data)
1437	{	1981	{
1438	return eio__1path (EIO_UNLINK, path, pri, cb, data);	1982	return eio__1path (EIO_UNLINK, path, pri, cb, data);
1439	}	1983	}
1440		1984
1441	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)	1985	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)
1442	{	1986	{
1443	return eio__1path (EIO_RMDIR, path, pri, cb, data);	1987	return eio__1path (EIO_RMDIR, path, pri, cb, data);
1444	}	1988	}
1445		1989
1446	eio_req eio_readdir (const char path, int pri, eio_cb cb, void *data)	1990	eio_req eio_readdir (const char path, int flags, int pri, eio_cb cb, void *data)
1447	{	1991	{
1448	return eio__1path (EIO_READDIR, path, pri, cb, data);	1992	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1449	}	1993	}
1450		1994
1451	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	1995	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1452	{	1996	{
1453	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;	1997	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND;
1454	}	1998	}
1455		1999
1456	static eio_req *	2000	static eio_req *
1457	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)	2001	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)
1458	{	2002	{
…		…
1482	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)	2026	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)
1483	{	2027	{
1484	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	2028	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1485	}	2029	}
1486		2030
1487	eio_req eio_custom (eio_cb execute, int pri, eio_cb cb, void data)	2031	eio_req eio_custom (void ()(eio_req ) execute, int pri, eio_cb cb, void data);
1488	{	2032	{
1489	REQ (EIO_CUSTOM); req->feed = (void ()(eio_req ))execute; SEND;	2033	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1490	}	2034	}
1491		2035
1492	#endif	2036	#endif
1493		2037
1494	eio_req eio_grp (eio_cb cb, void data)	2038	eio_req eio_grp (eio_cb cb, void data)
…		…
1542	/* misc garbage */	2086	/* misc garbage */
1543		2087
1544	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)	2088	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
1545	{	2089	{
1546	etp_worker wrk;	2090	etp_worker wrk;
		2091	ssize_t ret;
1547		2092
1548	wrk.dbuf = 0;	2093	wrk.dbuf = 0;
1549		2094
1550	eio__sendfile (ofd, ifd, offset, count, &wrk);	2095	ret = eio__sendfile (ofd, ifd, offset, count, &wrk);
1551		2096
1552	if (wrk.dbuf)	2097	if (wrk.dbuf)
1553	free (wrk.dbuf);	2098	free (wrk.dbuf);
1554	}
1555		2099
		2100	return ret;
		2101	}
		2102

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Comparing libeio/eio.c (file contents): Revision 1.27 by root, Wed Oct 22 18:15:36 2008 UTC vs. Revision 1.69 by root, Fri Jun 10 06:50:42 2011 UTC

Diff Legend

Comparing libeio/eio.c (file contents):
Revision 1.27 by root, Wed Oct 22 18:15:36 2008 UTC vs.
Revision 1.69 by root, Fri Jun 10 06:50:42 2011 UTC