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

Comparing libeio/eio.c (file contents):
Revision 1.17 by root, Tue Jun 3 05:12:51 2008 UTC vs.
Revision 1.33 by root, Sat Jun 6 19:44:17 2009 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 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	*
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	#include "eio.h"	40	#include "eio.h"
		41
		42	#ifdef EIO_STACKSIZE
		43	# define XTHREAD_STACKSIZE EIO_STACKSIZE
		44	#endif
41	#include "xthread.h"	45	#include "xthread.h"
42		46
43	#include <errno.h>	47	#include <errno.h>
44	#include <stddef.h>	48	#include <stddef.h>
45	#include <stdlib.h>	49	#include <stdlib.h>
…		…
64	#endif	68	#endif
65		69
66	#ifdef _WIN32	70	#ifdef _WIN32
67		71
68	/doh/	72	/doh/
69
70	#else	73	#else
71		74
72	# include "config.h"	75	# include "config.h"
73	# include <sys/time.h>	76	# include <sys/time.h>
74	# include <sys/select.h>	77	# include <sys/select.h>
75	# include <unistd.h>	78	# include <unistd.h>
76	# include <utime.h>	79	# include <utime.h>
77	# include <signal.h>	80	# include <signal.h>
78	# include <dirent.h>	81	# include <dirent.h>
		82
		83	/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
		84	# if defined(__FreeBSD__) \|\| defined(__NetBSD__) \|\| defined(__OpenBSD__)
		85	# define _DIRENT_HAVE_D_TYPE /* sigh */
		86	# define D_INO(de) (de)->d_fileno
		87	# define D_NAMLEN(de) (de)->d_namlen
		88	# elif defined(__linux) \|\| defined(d_ino) \|\| _XOPEN_SOURCE >= 600
		89	# define D_INO(de) (de)->d_ino
		90	# endif
		91
		92	#ifdef _D_EXACT_NAMLEN
		93	# undef D_NAMLEN
		94	# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
		95	#endif
		96
		97	# ifdef _DIRENT_HAVE_D_TYPE
		98	# define D_TYPE(de) (de)->d_type
		99	# endif
79		100
80	# ifndef EIO_STRUCT_DIRENT	101	# ifndef EIO_STRUCT_DIRENT
81	# define EIO_STRUCT_DIRENT struct dirent	102	# define EIO_STRUCT_DIRENT struct dirent
82	# endif	103	# endif
83		104
…		…
96	# else	117	# else
97	# error sendfile support requested but not available	118	# error sendfile support requested but not available
98	# endif	119	# endif
99	#endif	120	#endif
100		121
		122	#ifndef D_TYPE
		123	# define D_TYPE(de) 0
		124	#endif
		125	#ifndef D_INO
		126	# define D_INO(de) 0
		127	#endif
		128	#ifndef D_NAMLEN
		129	# define D_NAMLEN(de) strlen ((de)->d_name)
		130	#endif
		131
101	/* number of seconds after which an idle threads exit */	132	/* number of seconds after which an idle threads exit */
102	#define IDLE_TIMEOUT 10	133	#define IDLE_TIMEOUT 10
103		134
104	/* used for struct dirent, AIX doesn't provide it */	135	/* used for struct dirent, AIX doesn't provide it */
105	#ifndef NAME_MAX	136	#ifndef NAME_MAX
…		…
117	errno = ENOMEM; \	148	errno = ENOMEM; \
118	if (!eio_buf) \	149	if (!eio_buf) \
119	return -1;	150	return -1;
120		151
121	#define EIO_TICKS ((1000000 + 1023) >> 10)	152	#define EIO_TICKS ((1000000 + 1023) >> 10)
		153
		154	/*****************************************************************************/
		155
		156	#if __GNUC__ >= 3
		157	# define expect(expr,value) __builtin_expect ((expr),(value))
		158	#else
		159	# define expect(expr,value) (expr)
		160	#endif
		161
		162	#define expect_false(expr) expect ((expr) != 0, 0)
		163	#define expect_true(expr) expect ((expr) != 0, 1)
122		164
123	/*****************************************************************************/	165	/*****************************************************************************/
124		166
125	#define ETP_PRI_MIN EIO_PRI_MIN	167	#define ETP_PRI_MIN EIO_PRI_MIN
126	#define ETP_PRI_MAX EIO_PRI_MAX	168	#define ETP_PRI_MAX EIO_PRI_MAX
…		…
144	if (wrk->dirp) \	186	if (wrk->dirp) \
145	{ \	187	{ \
146	closedir (wrk->dirp); \	188	closedir (wrk->dirp); \
147	wrk->dirp = 0; \	189	wrk->dirp = 0; \
148	}	190	}
		191
149	#define ETP_WORKER_COMMON \	192	#define ETP_WORKER_COMMON \
150	void *dbuf; \	193	void *dbuf; \
151	DIR *dirp;	194	DIR *dirp;
152		195
153	/*****************************************************************************/	196	/*****************************************************************************/
…		…
176		219
177	static mutex_t wrklock = X_MUTEX_INIT;	220	static mutex_t wrklock = X_MUTEX_INIT;
178	static mutex_t reslock = X_MUTEX_INIT;	221	static mutex_t reslock = X_MUTEX_INIT;
179	static mutex_t reqlock = X_MUTEX_INIT;	222	static mutex_t reqlock = X_MUTEX_INIT;
180	static cond_t reqwait = X_COND_INIT;	223	static cond_t reqwait = X_COND_INIT;
		224
		225	#if !HAVE_PREADWRITE
		226	/*
		227	* make our pread/pwrite emulation safe against themselves, but not against
		228	* normal read/write by using a mutex. slows down execution a lot,
		229	* but that's your problem, not mine.
		230	*/
		231	static mutex_t preadwritelock = X_MUTEX_INIT;
		232	#endif
181		233
182	typedef struct etp_worker	234	typedef struct etp_worker
183	{	235	{
184	/* locked by wrklock */	236	/* locked by wrklock */
185	struct etp_worker prev, next;	237	struct etp_worker prev, next;
…		…
330		382
331	static void etp_atfork_child (void)	383	static void etp_atfork_child (void)
332	{	384	{
333	ETP_REQ *prv;	385	ETP_REQ *prv;
334		386
335	while (prv = reqq_shift (&req_queue))	387	while ((prv = reqq_shift (&req_queue)))
336	ETP_DESTROY (prv);	388	ETP_DESTROY (prv);
337		389
338	while (prv = reqq_shift (&res_queue))	390	while ((prv = reqq_shift (&res_queue)))
339	ETP_DESTROY (prv);	391	ETP_DESTROY (prv);
340		392
341	while (wrk_first.next != &wrk_first)	393	while (wrk_first.next != &wrk_first)
342	{	394	{
343	etp_worker *wrk = wrk_first.next;	395	etp_worker *wrk = wrk_first.next;
…		…
371		423
372	pthread_once (&doinit, etp_once_init);	424	pthread_once (&doinit, etp_once_init);
373		425
374	want_poll_cb = want_poll;	426	want_poll_cb = want_poll;
375	done_poll_cb = done_poll;	427	done_poll_cb = done_poll;
		428
		429	return 0;
376	}	430	}
377		431
378	X_THREAD_PROC (etp_proc);	432	X_THREAD_PROC (etp_proc);
379		433
380	static void etp_start_thread (void)	434	static void etp_start_thread (void)
…		…
400	X_UNLOCK (wrklock);	454	X_UNLOCK (wrklock);
401	}	455	}
402		456
403	static void etp_maybe_start_thread (void)	457	static void etp_maybe_start_thread (void)
404	{	458	{
405	if (etp_nthreads () >= wanted)	459	if (expect_true (etp_nthreads () >= wanted))
406	return;	460	return;
407		461
408	/* todo: maybe use idle here, but might be less exact */	462	/* todo: maybe use idle here, but might be less exact */
409	if (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())	463	if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
410	return;	464	return;
411		465
412	etp_start_thread ();	466	etp_start_thread ();
413	}	467	}
414		468
…		…
467		521
468	X_LOCK (reqlock);	522	X_LOCK (reqlock);
469	--nreqs;	523	--nreqs;
470	X_UNLOCK (reqlock);	524	X_UNLOCK (reqlock);
471		525
472	if (req->type == EIO_GROUP && req->size)	526	if (expect_false (req->type == EIO_GROUP && req->size))
473	{	527	{
474	req->int1 = 1; /* mark request as delayed */	528	req->int1 = 1; /* mark request as delayed */
475	continue;	529	continue;
476	}	530	}
477	else	531	else
478	{	532	{
479	int res = ETP_FINISH (req);	533	int res = ETP_FINISH (req);
480	if (res)	534	if (expect_false (res))
481	return res;	535	return res;
482	}	536	}
483		537
484	if (maxreqs && !--maxreqs)	538	if (expect_false (maxreqs && !--maxreqs))
485	break;	539	break;
486		540
487	if (maxtime)	541	if (maxtime)
488	{	542	{
489	gettimeofday (&tv_now, 0);	543	gettimeofday (&tv_now, 0);
…		…
508		562
509	static void etp_submit (ETP_REQ *req)	563	static void etp_submit (ETP_REQ *req)
510	{	564	{
511	req->pri -= ETP_PRI_MIN;	565	req->pri -= ETP_PRI_MIN;
512		566
513	if (req->pri < ETP_PRI_MIN - ETP_PRI_MIN) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;	567	if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
514	if (req->pri > ETP_PRI_MAX - ETP_PRI_MIN) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;	568	if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
515		569
		570	if (expect_false (req->type == EIO_GROUP))
		571	{
		572	/* I hope this is worth it :/ */
516	X_LOCK (reqlock);	573	X_LOCK (reqlock);
517	++nreqs;	574	++nreqs;
		575	X_UNLOCK (reqlock);
		576
		577	X_LOCK (reslock);
		578
		579	++npending;
		580
		581	if (!reqq_push (&res_queue, req) && want_poll_cb)
		582	want_poll_cb ();
		583
		584	X_UNLOCK (reslock);
		585	}
		586	else
		587	{
		588	X_LOCK (reqlock);
		589	++nreqs;
518	++nready;	590	++nready;
519	reqq_push (&req_queue, req);	591	reqq_push (&req_queue, req);
520	X_COND_SIGNAL (reqwait);	592	X_COND_SIGNAL (reqwait);
521	X_UNLOCK (reqlock);	593	X_UNLOCK (reqlock);
522		594
523	etp_maybe_start_thread ();	595	etp_maybe_start_thread ();
		596	}
524	}	597	}
525		598
526	static void etp_set_max_poll_time (double nseconds)	599	static void etp_set_max_poll_time (double nseconds)
527	{	600	{
528	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	601	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
…		…
563		636
564	static void grp_try_feed (eio_req *grp)	637	static void grp_try_feed (eio_req *grp)
565	{	638	{
566	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	639	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
567	{	640	{
568	int old_len = grp->size;	641	grp->flags &= ~EIO_FLAG_GROUPADD;
569		642
570	EIO_FEED (grp);	643	EIO_FEED (grp);
571		644
572	/* stop if no progress has been made */	645	/* stop if no progress has been made */
573	if (old_len == grp->size)	646	if (!(grp->flags & EIO_FLAG_GROUPADD))
574	{	647	{
575	grp->feed = 0;	648	grp->feed = 0;
576	break;	649	break;
577	}	650	}
578	}	651	}
…		…
695		768
696	/*****************************************************************************/	769	/*****************************************************************************/
697	/* work around various missing functions */	770	/* work around various missing functions */
698		771
699	#if !HAVE_PREADWRITE	772	#if !HAVE_PREADWRITE
		773	# undef pread
		774	# undef pwrite
700	# define pread eio__pread	775	# define pread eio__pread
701	# define pwrite eio__pwrite	776	# define pwrite eio__pwrite
702
703	/*
704	* make our pread/pwrite safe against themselves, but not against
705	* normal read/write by using a mutex. slows down execution a lot,
706	* but that's your problem, not mine.
707	*/
708	static mutex_t preadwritelock = X_MUTEX_INIT;
709		777
710	static ssize_t	778	static ssize_t
711	eio__pread (int fd, void *buf, size_t count, off_t offset)	779	eio__pread (int fd, void *buf, size_t count, off_t offset)
712	{	780	{
713	ssize_t res;	781	ssize_t res;
…		…
731		799
732	X_LOCK (preadwritelock);	800	X_LOCK (preadwritelock);
733	ooffset = lseek (fd, 0, SEEK_CUR);	801	ooffset = lseek (fd, 0, SEEK_CUR);
734	lseek (fd, offset, SEEK_SET);	802	lseek (fd, offset, SEEK_SET);
735	res = write (fd, buf, count);	803	res = write (fd, buf, count);
736	lseek (fd, offset, SEEK_SET);	804	lseek (fd, ooffset, SEEK_SET);
737	X_UNLOCK (preadwritelock);	805	X_UNLOCK (preadwritelock);
738		806
739	return res;	807	return res;
740	}	808	}
741	#endif	809	#endif
742		810
743	#ifndef HAVE_FUTIMES	811	#ifndef HAVE_FUTIMES
744		812
		813	# undef utimes
		814	# undef futimes
745	# define utimes(path,times) eio__utimes (path, times)	815	# define utimes(path,times) eio__utimes (path, times)
746	# define futimes(fd,times) eio__futimes (fd, times)	816	# define futimes(fd,times) eio__futimes (fd, times)
747		817
748	static int	818	static int
749	eio__utimes (const char *filename, const struct timeval times[2])	819	eio__utimes (const char *filename, const struct timeval times[2])
…		…
768	}	838	}
769		839
770	#endif	840	#endif
771		841
772	#if !HAVE_FDATASYNC	842	#if !HAVE_FDATASYNC
		843	# undef fdatasync
773	# define fdatasync fsync	844	# define fdatasync(fd) fsync (fd)
774	#endif	845	#endif
		846
		847	/* sync_file_range always needs emulation */
		848	int
		849	eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
		850	{
		851	#if HAVE_SYNC_FILE_RANGE
		852	int res;
		853
		854	if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
		855	\|\| EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
		856	\|\| EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
		857	{
		858	flags = 0
		859	\| (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
		860	\| (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
		861	\| (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
		862	}
		863
		864	res = sync_file_range (fd, offset, nbytes, flags);
		865
		866	if (!res \|\| errno != ENOSYS)
		867	return res;
		868	#endif
		869
		870	/* even though we could play tricks with the flags, it's better to always
		871	* call fdatasync, as thta matches the expectation of it's users best */
		872	return fdatasync (fd);
		873	}
775		874
776	#if !HAVE_READAHEAD	875	#if !HAVE_READAHEAD
		876	# undef readahead
777	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)	877	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
778		878
779	static ssize_t	879	static ssize_t
780	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)	880	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
781	{	881	{
…		…
889	}	989	}
890		990
891	return res;	991	return res;
892	}	992	}
893		993
		994	static int
		995	eio_dent_cmp (const void a_, const void b_)
		996	{
		997	const eio_dirent a = (const eio_dirent )a_;
		998	const eio_dirent b = (const eio_dirent )b_;
		999
		1000	return (int)b->score - (int)a->score ? (int)b->score - (int)a->score
		1001	: a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; /* int might be < ino_t */
		1002	}
		1003
894	/* read a full directory */	1004	/* read a full directory */
895	static void	1005	static void
896	eio__scandir (eio_req req, etp_worker self)	1006	eio__scandir (eio_req req, etp_worker self)
897	{	1007	{
898	DIR *dirp;	1008	DIR *dirp;
899	EIO_STRUCT_DIRENT *entp;	1009	EIO_STRUCT_DIRENT *entp;
900	char name, names;	1010	unsigned char name, names;
901	int memlen = 4096;	1011	int namesalloc = 4096;
902	int memofs = 0;	1012	int namesoffs = 0;
		1013	int flags = req->int1;
		1014	eio_dirent *dents = 0;
		1015	int dentalloc = 128;
903	int res = 0;	1016	int dentoffs = 0;
		1017
		1018	req->result = -1;
		1019
		1020	if (!(flags & EIO_READDIR_DENTS))
		1021	flags &= ~(EIO_READDIR_DIRS_FIRST \| EIO_READDIR_STAT_ORDER);
904		1022
905	X_LOCK (wrklock);	1023	X_LOCK (wrklock);
		1024	/* the corresponding closedir is in ETP_WORKER_CLEAR */
906	self->dirp = dirp = opendir (req->ptr1);	1025	self->dirp = dirp = opendir (req->ptr1);
907	req->flags \|= EIO_FLAG_PTR2_FREE;	1026	req->flags \|= EIO_FLAG_PTR1_FREE \| EIO_FLAG_PTR2_FREE;
908	req->ptr2 = names = malloc (memlen);	1027	req->ptr1 = names = malloc (namesalloc);
		1028	req->ptr2 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
909	X_UNLOCK (wrklock);	1029	X_UNLOCK (wrklock);
910		1030
911	if (dirp && names)	1031	if (dirp && names && (!flags \|\| dents))
912	for (;;)	1032	for (;;)
913	{	1033	{
914	errno = 0;	1034	errno = 0;
915	entp = readdir (dirp);	1035	entp = readdir (dirp);
916		1036
917	if (!entp)	1037	if (!entp)
		1038	{
		1039	if (errno)
		1040	break;
		1041
		1042	/* sort etc. */
		1043	req->int1 = flags;
		1044	req->result = dentoffs;
		1045
		1046	if (dents)
		1047	{
		1048	eio_dirent *ent = dents + dentoffs;
		1049
		1050	while (ent > dents)
		1051	(--ent)->name = names + (size_t)ent->name;
		1052	}
		1053
		1054	if (flags & EIO_READDIR_STAT_ORDER
		1055	\|\| !(~flags & (EIO_READDIR_DIRS_FIRST \| EIO_READDIR_FOUND_UNKNOWN)))
		1056	{
		1057	/* pray your qsort doesn't use quicksort */
		1058	qsort (dents, dentoffs, sizeof (dents), eio_dent_cmp); / score depends of DIRS_FIRST */
		1059	}
		1060	else if (flags & EIO_READDIR_DIRS_FIRST)
		1061	{
		1062	/* in this case, all is known, and we just put dirs first and sort them */
		1063	eio_dirent *ent = dents + dentoffs;
		1064	eio_dirent *dir = dents;
		1065
		1066	while (ent > dir)
		1067	{
		1068	if (dir->type == DT_DIR)
		1069	++dir;
		1070	else
		1071	{
		1072	--ent;
		1073
		1074	if (ent->type == DT_DIR)
		1075	{
		1076	eio_dirent tmp = *dir;
		1077	dir = ent;
		1078	*ent = tmp;
		1079
		1080	++dir;
		1081	}
		1082	}
		1083	}
		1084
		1085	/* now sort the dirs only */
		1086	qsort (dents, dir - dents, sizeof (*dents), eio_dent_cmp);
		1087	}
		1088
		1089	/* only provide the names array unless DENTS is specified */
		1090	if (!(flags & EIO_READDIR_DENTS))
		1091	{
		1092	X_LOCK (wrklock);
		1093	assert (!dents);
		1094	req->ptr1 = 0;
		1095	req->ptr2 = names;
		1096	X_UNLOCK (wrklock);
		1097	}
		1098
918	break;	1099	break;
		1100	}
919		1101
		1102	/* now add the entry to our list(s) */
920	name = entp->d_name;	1103	name = entp->d_name;
921		1104
		1105	/* skip . and .. entries */
922	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	1106	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
923	{	1107	{
924	int len = strlen (name) + 1;	1108	int len = D_NAMLEN (entp) + 1;
925		1109
926	res++;	1110	while (expect_false (namesoffs + len > namesalloc))
927
928	while (memofs + len > memlen)
929	{	1111	{
930	memlen *= 2;	1112	namesalloc *= 2;
931	X_LOCK (wrklock);	1113	X_LOCK (wrklock);
932	req->ptr2 = names = realloc (names, memlen);	1114	req->ptr1 = names = realloc (names, namesalloc);
933	X_UNLOCK (wrklock);	1115	X_UNLOCK (wrklock);
934		1116
935	if (!names)	1117	if (!names)
936	break;	1118	break;
937	}	1119	}
938		1120
939	memcpy (names + memofs, name, len);	1121	memcpy (names + namesoffs, name, len);
		1122
		1123	if (dents)
		1124	{
		1125	struct eio_dirent *ent;
		1126
		1127	if (expect_false (dentoffs == dentalloc))
		1128	{
		1129	dentalloc *= 2;
		1130	X_LOCK (wrklock);
		1131	req->ptr2 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
		1132	X_UNLOCK (wrklock);
		1133
		1134	if (!dents)
		1135	break;
		1136	}
		1137
		1138	ent = dents + dentoffs;
		1139
		1140	ent->name = (char )(size_t)namesoffs; / rather dirtily we store the offset in the pointer */
		1141	ent->namelen = len - 1;
		1142	ent->inode = D_INO (entp);
		1143
		1144	switch (D_TYPE (entp))
		1145	{
		1146	default:
		1147	ent->type = EIO_DT_UNKNOWN;
		1148	flags \|= EIO_READDIR_FOUND_UNKNOWN;
		1149	break;
		1150
		1151	#ifdef DT_FIFO
		1152	case DT_FIFO: ent->type = EIO_DT_FIFO; break;
		1153	#endif
		1154	#ifdef DT_CHR
		1155	case DT_CHR: ent->type = EIO_DT_CHR; break;
		1156	#endif
		1157	#ifdef DT_MPC
		1158	case DT_MPC: ent->type = EIO_DT_MPC; break;
		1159	#endif
		1160	#ifdef DT_DIR
		1161	case DT_DIR: ent->type = EIO_DT_DIR; break;
		1162	#endif
		1163	#ifdef DT_NAM
		1164	case DT_NAM: ent->type = EIO_DT_NAM; break;
		1165	#endif
		1166	#ifdef DT_BLK
		1167	case DT_BLK: ent->type = EIO_DT_BLK; break;
		1168	#endif
		1169	#ifdef DT_MPB
		1170	case DT_MPB: ent->type = EIO_DT_MPB; break;
		1171	#endif
		1172	#ifdef DT_REG
		1173	case DT_REG: ent->type = EIO_DT_REG; break;
		1174	#endif
		1175	#ifdef DT_NWK
		1176	case DT_NWK: ent->type = EIO_DT_NWK; break;
		1177	#endif
		1178	#ifdef DT_CMP
		1179	case DT_CMP: ent->type = EIO_DT_CMP; break;
		1180	#endif
		1181	#ifdef DT_LNK
		1182	case DT_LNK: ent->type = EIO_DT_LNK; break;
		1183	#endif
		1184	#ifdef DT_SOCK
		1185	case DT_SOCK: ent->type = EIO_DT_SOCK; break;
		1186	#endif
		1187	#ifdef DT_DOOR
		1188	case DT_DOOR: ent->type = EIO_DT_DOOR; break;
		1189	#endif
		1190	#ifdef DT_WHT
		1191	case DT_WHT: ent->type = EIO_DT_WHT; break;
		1192	#endif
		1193	}
		1194
		1195	ent->score = 0;
		1196
		1197	if (flags & EIO_READDIR_DIRS_FIRST)
		1198	{
		1199	if (ent->type == EIO_DT_UNKNOWN)
		1200	{
		1201	if (name == '.') / leading dots are likely directories, and, in any case, rare */
		1202	ent->score = 98;
		1203	else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
		1204	ent->score = len <= 2 ? len + 60 : len <= 4 ? 50 : len <= 7 ? 40 : 10; /* shorter == more likely dir, but avoid too many classes */
		1205	}
		1206	else if (ent->type == EIO_DT_DIR)
		1207	ent->score = 100;
		1208	}
		1209	}
		1210
940	memofs += len;	1211	namesoffs += len;
		1212	++dentoffs;
941	}	1213	}
942	}	1214	}
943		1215	else
944	if (errno)
945	res = -1;
946
947	req->result = res;	1216	req->result = -1;
		1217	}
		1218
		1219	#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
		1220	# undef msync
		1221	# define msync(a,b,c) ((errno = ENOSYS), -1)
		1222	#endif
		1223
		1224	int
		1225	eio__mtouch (void *mem, size_t len, int flags)
		1226	{
		1227	intptr_t addr = (intptr_t)mem;
		1228	intptr_t end = addr + len;
		1229	#ifdef PAGESIZE
		1230	const intptr_t page = PAGESIZE;
		1231	#else
		1232	static intptr_t page;
		1233
		1234	if (!page)
		1235	page = sysconf (_SC_PAGESIZE);
		1236	#endif
		1237
		1238	addr &= ~(page - 1); /* assume page size is always a power of two */
		1239
		1240	if (addr < end)
		1241	if (flags) /* modify */
		1242	do { ((volatile sig_atomic_t )addr) \|= 0; } while ((addr += page) < len);
		1243	else
		1244	do { ((volatile sig_atomic_t )addr) ; } while ((addr += page) < len);
		1245
		1246	return 0;
948	}	1247	}
949		1248
950	/*****************************************************************************/	1249	/*****************************************************************************/
951		1250
952	#define ALLOC(len) \	1251	#define ALLOC(len) \
…		…
1039		1338
1040	/*****************************************************************************/	1339	/*****************************************************************************/
1041		1340
1042	int eio_init (void (want_poll)(void), void (done_poll)(void))	1341	int eio_init (void (want_poll)(void), void (done_poll)(void))
1043	{	1342	{
1044	etp_init (want_poll, done_poll);	1343	return etp_init (want_poll, done_poll);
1045	}	1344	}
1046		1345
1047	static void eio_api_destroy (eio_req *req)	1346	static void eio_api_destroy (eio_req *req)
1048	{	1347	{
1049	free (req);	1348	free (req);
…		…
1111	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;	1410	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
1112	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;	1411	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
1113	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;	1412	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
1114	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;	1413	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
1115	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;	1414	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
1116	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;	1415	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;
1117		1416
1118	case EIO_READLINK: ALLOC (NAME_MAX);	1417	case EIO_READLINK: ALLOC (NAME_MAX);
1119	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;	1418	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
1120		1419
1121	case EIO_SYNC: req->result = 0; sync (); break;	1420	case EIO_SYNC: req->result = 0; sync (); break;
1122	case EIO_FSYNC: req->result = fsync (req->int1); break;	1421	case EIO_FSYNC: req->result = fsync (req->int1); break;
1123	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;	1422	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		1423	case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break;
		1424	case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
		1425	case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
1124		1426
1125	case EIO_READDIR: eio__scandir (req, self); break;	1427	case EIO_READDIR: eio__scandir (req, self); break;
1126		1428
1127	case EIO_BUSY:	1429	case EIO_BUSY:
1128	#ifdef _WIN32	1430	#ifdef _WIN32
…		…
1160		1462
1161	req->result = req->type == EIO_FUTIME	1463	req->result = req->type == EIO_FUTIME
1162	? futimes (req->int1, times)	1464	? futimes (req->int1, times)
1163	: utimes (req->ptr1, times);	1465	: utimes (req->ptr1, times);
1164	}	1466	}
		1467	break;
1165		1468
1166	case EIO_GROUP:	1469	case EIO_GROUP:
		1470	abort (); /* handled in eio_request */
		1471
1167	case EIO_NOP:	1472	case EIO_NOP:
1168	req->result = 0;	1473	req->result = 0;
1169	break;	1474	break;
1170		1475
1171	case EIO_CUSTOM:	1476	case EIO_CUSTOM:
1172	req->feed (req);	1477	((void ()(eio_req ))req->feed) (req);
1173	break;	1478	break;
1174		1479
1175	default:	1480	default:
1176	req->result = -1;	1481	req->result = -1;
1177	break;	1482	break;
…		…
1200	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data)	1505	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data)
1201	{	1506	{
1202	REQ (EIO_FSYNC); req->int1 = fd; SEND;	1507	REQ (EIO_FSYNC); req->int1 = fd; SEND;
1203	}	1508	}
1204		1509
		1510	eio_req eio_msync (void addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		1511	{
		1512	REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		1513	}
		1514
		1515	eio_req eio_mtouch (void addr, size_t length, int flags, int pri, eio_cb cb, void *data)
		1516	{
		1517	REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
		1518	}
		1519
		1520	eio_req eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void data)
		1521	{
		1522	REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
		1523	}
		1524
1205	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data)	1525	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data)
1206	{	1526	{
1207	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;	1527	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
1208	}	1528	}
1209		1529
…		…
1321	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)	1641	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)
1322	{	1642	{
1323	return eio__1path (EIO_RMDIR, path, pri, cb, data);	1643	return eio__1path (EIO_RMDIR, path, pri, cb, data);
1324	}	1644	}
1325		1645
1326	eio_req eio_readdir (const char path, int pri, eio_cb cb, void *data)	1646	eio_req eio_readdir (const char path, int flags, int pri, eio_cb cb, void *data)
1327	{	1647	{
1328	return eio__1path (EIO_READDIR, path, pri, cb, data);	1648	REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
1329	}	1649	}
1330		1650
1331	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)	1651	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
1332	{	1652	{
1333	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND;	1653	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;
1334	}	1654	}
1335		1655
1336	static eio_req *	1656	static eio_req *
1337	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)	1657	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)
1338	{	1658	{
…		…
1364	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);	1684	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1365	}	1685	}
1366		1686
1367	eio_req eio_custom (eio_cb execute, int pri, eio_cb cb, void data)	1687	eio_req eio_custom (eio_cb execute, int pri, eio_cb cb, void data)
1368	{	1688	{
1369	REQ (EIO_CUSTOM); req->feed = execute; SEND;	1689	REQ (EIO_CUSTOM); req->feed = (void ()(eio_req ))execute; SEND;
1370	}	1690	}
1371		1691
1372	#endif	1692	#endif
1373		1693
1374	eio_req eio_grp (eio_cb cb, void data)	1694	eio_req eio_grp (eio_cb cb, void data)
…		…
1402		1722
1403	void eio_grp_add (eio_req grp, eio_req req)	1723	void eio_grp_add (eio_req grp, eio_req req)
1404	{	1724	{
1405	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));	1725	assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
1406		1726
		1727	grp->flags \|= EIO_FLAG_GROUPADD;
		1728
1407	++grp->size;	1729	++grp->size;
1408	req->grp = grp;	1730	req->grp = grp;
1409		1731
1410	req->grp_prev = 0;	1732	req->grp_prev = 0;
1411	req->grp_next = grp->grp_first;	1733	req->grp_next = grp->grp_first;

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Comparing libeio/eio.c (file contents): Revision 1.17 by root, Tue Jun 3 05:12:51 2008 UTC vs. Revision 1.33 by root, Sat Jun 6 19:44:17 2009 UTC

Diff Legend

Comparing libeio/eio.c (file contents):
Revision 1.17 by root, Tue Jun 3 05:12:51 2008 UTC vs.
Revision 1.33 by root, Sat Jun 6 19:44:17 2009 UTC