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

Comparing libeio/eio.h (file contents):
Revision 1.1 by root, Sat May 10 17:16:39 2008 UTC vs.
Revision 1.49 by root, Tue Sep 27 12:36:19 2011 UTC

…		…
		1	/*
		2	* libeio API header
		3	*
		4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de>
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without modifica-
		8	* tion, are permitted provided that the following conditions are met:
		9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*
		28	* Alternatively, the contents of this file may be used under the terms of
		29	* the GNU General Public License ("GPL") version 2 or any later version,
		30	* in which case the provisions of the GPL are applicable instead of
		31	* the above. If you wish to allow the use of your version of this file
		32	* only under the terms of the GPL and not to allow others to use your
		33	* version of this file under the BSD license, indicate your decision
		34	* by deleting the provisions above and replace them with the notice
		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
		37	* either the BSD or the GPL.
		38	*/
		39
1	#ifndef EIO_H_	40	#ifndef EIO_H_
2	#define EIO_H_	41	#define EIO_H_
3		42
		43	#ifdef __cplusplus
		44	extern "C" {
		45	#endif
		46
4	#include <stddef.h>	47	#include <stddef.h>
5	#include <stdlib.h>	48	#include <signal.h>
		49	#include <sys/types.h>
6		50
7	typedef struct eio_req eio_req;	51	typedef struct eio_req eio_req;
		52	typedef struct eio_dirent eio_dirent;
8		53
9	typedef int (eio_cb)(eio_req req);	54	typedef int (eio_cb)(eio_req req);
10		55
11	#ifndef EIO_COMMON	56	#ifndef EIO_REQ_MEMBERS
12	# define EIO_COMMON \	57	# define EIO_REQ_MEMBERS
13	eio_cb finish; \	58	#endif
14	void (destroy)(eio_req req);\	59
15	void *data	60	#ifndef EIO_STRUCT_STAT
		61	# ifdef _WIN32
		62	# define EIO_STRUCT_STAT struct _stati64
		63	# define EIO_STRUCT_STATI64
		64	# else
		65	# define EIO_STRUCT_STAT struct stat
16	#endif	66	# endif
		67	#endif
17		68
		69	#ifdef _WIN32
		70	typedef int eio_uid_t;
		71	typedef int eio_gid_t;
		72	#ifdef __MINGW32__ /* no intptr_t */
		73	typedef ssize_t eio_ssize_t;
		74	#else
		75	typedef intptr_t eio_ssize_t; /* or SSIZE_T */
		76	#endif
		77	#if __GNUC__
		78	typedef long long eio_ino_t; /* signed for compatibility to msvc */
		79	#else
		80	typedef __int64 eio_ino_t; /* unsigned not supported by msvc */
		81	#endif
		82	#else
		83	typedef uid_t eio_uid_t;
		84	typedef gid_t eio_gid_t;
		85	typedef ssize_t eio_ssize_t;
		86	typedef ino_t eio_ino_t;
		87	#endif
		88
		89	#ifndef EIO_STRUCT_STATVFS
		90	# define EIO_STRUCT_STATVFS struct statvfs
		91	#endif
		92
		93	/* managing working directories */
		94
		95	typedef struct eio_pwd *eio_wd;
		96
		97	#define EIO_CWD 0 /* the current working directory of the process, guaranteed to be a null pointer */
		98	#define EIO_INVALID_WD ((eio_wd)(int)-1) /* failure return for eio_wd_open */
		99
		100	eio_wd eio_wd_open_sync (eio_wd wd, const char *path);
		101	void eio_wd_close_sync (eio_wd wd);
		102
		103	/* for readdir */
		104
		105	/* eio_readdir flags */
18	enum {	106	enum
		107	{
		108	EIO_READDIR_DENTS = 0x01, /* ptr2 contains eio_dirents, not just the (unsorted) names */
		109	EIO_READDIR_DIRS_FIRST = 0x02, /* dirents gets sorted into a good stat() ing order to find directories first */
		110	EIO_READDIR_STAT_ORDER = 0x04, /* dirents gets sorted into a good stat() ing order to quickly stat all files */
		111	EIO_READDIR_FOUND_UNKNOWN = 0x80, /* set by eio_readdir when _ARRAY was set and any TYPE=UNKNOWN's were found /
		112
		113	EIO_READDIR_CUSTOM1 = 0x100, /* for use by apps */
		114	EIO_READDIR_CUSTOM2 = 0x200 /* for use by apps */
		115	};
		116
		117	/* using "typical" values in the hope that the compiler will do something sensible */
		118	enum eio_dtype
		119	{
		120	EIO_DT_UNKNOWN = 0,
		121	EIO_DT_FIFO = 1,
		122	EIO_DT_CHR = 2,
		123	EIO_DT_MPC = 3, /* multiplexed char device (v7+coherent) */
		124	EIO_DT_DIR = 4,
		125	EIO_DT_NAM = 5, /* xenix special named file */
		126	EIO_DT_BLK = 6,
		127	EIO_DT_MPB = 7, /* multiplexed block device (v7+coherent) */
		128	EIO_DT_REG = 8,
		129	EIO_DT_NWK = 9, /* HP-UX network special */
		130	EIO_DT_CMP = 9, /* VxFS compressed */
		131	EIO_DT_LNK = 10,
		132	/* DT_SHAD = 11,*/
		133	EIO_DT_SOCK = 12,
		134	EIO_DT_DOOR = 13, /* solaris door */
		135	EIO_DT_WHT = 14,
		136	EIO_DT_MAX = 15 /* highest DT_VALUE ever, hopefully */
		137	};
		138
		139	struct eio_dirent
		140	{
		141	int nameofs; /* offset of null-terminated name string in (char )req->ptr2 /
		142	unsigned short namelen; /* size of filename without trailing 0 */
		143	unsigned char type; /* one of EIO_DT_* */
		144	signed char score; /* internal use */
		145	eio_ino_t inode; /* the inode number, if available, otherwise unspecified */
		146	};
		147
		148	/* eio_msync flags */
		149	enum
		150	{
		151	EIO_MS_ASYNC = 1,
		152	EIO_MS_INVALIDATE = 2,
		153	EIO_MS_SYNC = 4
		154	};
		155
		156	/* eio_mtouch flags */
		157	enum
		158	{
		159	EIO_MT_MODIFY = 1
		160	};
		161
		162	/* eio_sync_file_range flags */
		163	enum
		164	{
		165	EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1,
		166	EIO_SYNC_FILE_RANGE_WRITE = 2,
		167	EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4
		168	};
		169
		170	/* eio_fallocate flags */
		171	enum
		172	{
		173	EIO_FALLOC_FL_KEEP_SIZE = 1 /* MUST match the value in linux/falloc.h */
		174	};
		175
		176	/* timestamps and differences - feel free to use double in your code directly */
		177	typedef double eio_tstamp;
		178
		179	/* the eio request structure */
		180	enum
		181	{
19	EIO_QUIT,	182	EIO_CUSTOM,
		183	EIO_WD_OPEN, EIO_WD_CLOSE,
		184
20	EIO_OPEN, EIO_CLOSE, EIO_DUP2,	185	EIO_CLOSE, EIO_DUP2,
21	EIO_READ, EIO_WRITE,	186	EIO_READ, EIO_WRITE,
22	EIO_READAHEAD, EIO_SENDFILE,	187	EIO_READAHEAD, EIO_SENDFILE,
23	EIO_STAT, EIO_LSTAT, EIO_FSTAT,	188	EIO_FSTAT, EIO_FSTATVFS,
24	EIO_TRUNCATE, EIO_FTRUNCATE,	189	EIO_FTRUNCATE, EIO_FUTIME, EIO_FCHMOD, EIO_FCHOWN,
25	EIO_UTIME, EIO_FUTIME,
26	EIO_CHMOD, EIO_FCHMOD,
27	EIO_CHOWN, EIO_FCHOWN,
28	EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC,	190	EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_SYNCFS,
29	EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,	191	EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE,
30	EIO_MKNOD, EIO_READDIR,	192	EIO_MLOCK, EIO_MLOCKALL,
31	EIO_LINK, EIO_SYMLINK, EIO_READLINK,
32	EIO_GROUP, EIO_NOP,	193	EIO_GROUP, EIO_NOP,
33	EIO_BUSY,	194	EIO_BUSY,
34	};
35		195
36	typedef double eio_tstamp; /* feel free to use double in your code directly */	196	/* these use wd + ptr1, but are emulated */
		197	EIO_REALPATH,
		198	EIO_STATVFS,
		199	EIO_READDIR,
37		200
38	/* eio request structure */	201	/* all the following requests use wd + ptr1 as path in xxxat functions */
39	/* this structure is mostly read-only */	202	EIO_OPEN,
40	struct eio_req	203	EIO_STAT, EIO_LSTAT,
41	{	204	EIO_TRUNCATE,
42	eio_req volatile next; / private */	205	EIO_UTIME,
		206	EIO_CHMOD,
		207	EIO_CHOWN,
		208	EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,
		209	EIO_MKNOD,
		210	EIO_LINK, EIO_SYMLINK, EIO_READLINK,
43		211
44	ssize_t result; /* result of syscall, e.g. result = read (... */	212	EIO_REQ_TYPE_NUM
45	off_t offs; /* read, write, truncate, readahead: file offset; mknod: dev_t */
46	size_t size; /* read, write, readahead, sendfile: length */
47	void ptr1; / all applicable requests: pathname, old name */
48	void ptr2; / all applicable requests: new name or memory buffer */
49	eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
50	eio_tstamp nv2; /* utime, futime: mtime */
51
52	int type; /* EIO_xxx constant */
53	int int1; /* all applicable requests: file descriptor; sendfile: output fd; open: flags */
54	long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode */
55	long int3; /* chown, fchown: gid */
56	int errorno; /* errno value on syscall return */
57
58	unsigned char flags; /* private */
59	unsigned char pri; /* the priority */
60
61	void (feed)(eio_req req);
62
63	EIO_COMMON;
64
65	eio_req grp, grp_prev, grp_next, grp_first; /* private */
66	};	213	};
67		214
		215	/* mlockall constants */
68	enum {	216	enum
69	EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */	217	{
70	EIO_FLAG_PTR2_FREE = 0x02, /* need to free(ptr2) */	218	EIO_MCL_CURRENT = 1,
		219	EIO_MCL_FUTURE = 2,
71	};	220	};
		221
		222	/* request priorities */
72		223
73	enum {	224	enum {
74	EIO_PRI_MIN = -4,	225	EIO_PRI_MIN = -4,
75	EIO_PRI_MAX = 4,	226	EIO_PRI_MAX = 4,
76
77	EIO_DEFAULT_PRI = 0,	227	EIO_PRI_DEFAULT = 0,
78	EIO_PRI_BIAS = -EIO_PRI_MIN,
79	EIO_NUM_PRI = EIO_PRI_MAX + EIO_PRI_BIAS + 1,
80	};	228	};
		229
		230	/* eio request structure */
		231	/* this structure is mostly read-only */
		232	/* when initialising it, all members must be zero-initialised */
		233	struct eio_req
		234	{
		235	eio_req volatile next; / private ETP */
		236
		237	eio_wd wd; /* all applicable requests: working directory of pathname, old name; wd_open: return wd */
		238
		239	eio_ssize_t result; /* result of syscall, e.g. result = read (... */
		240	off_t offs; /* read, write, truncate, readahead, sync_file_range, fallocate: file offset, mknod: dev_t */
		241	size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range, fallocate: length */
		242	void ptr1; / all applicable requests: pathname, old name; readdir: optional eio_dirents */
		243	void ptr2; / all applicable requests: new name or memory buffer; readdir: name strings */
		244	eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
		245	eio_tstamp nv2; /* utime, futime: mtime */
		246
		247	int type; /* EIO_xxx constant ETP */
		248	int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */
		249	long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range, fallocate: flags */
		250	long int3; /* chown, fchown: gid; rename, link: working directory of new name */
		251	int errorno; /* errno value on syscall return */
		252
		253	#if __i386 \|\| __amd64
		254	unsigned char cancelled;
		255	#else
		256	sig_atomic_t cancelled;
		257	#endif
		258
		259	unsigned char flags; /* private */
		260	signed char pri; /* the priority */
		261
		262	void *data;
		263	eio_cb finish;
		264	void (destroy)(eio_req req); /* called when request no longer needed */
		265	void (feed)(eio_req req); /* only used for group requests */
		266
		267	EIO_REQ_MEMBERS
		268
		269	eio_req grp, grp_prev, grp_next, grp_first; /* private */
		270	};
		271
		272	/* _private_ request flags */
		273	enum {
		274	EIO_FLAG_PTR1_FREE = 0x01, /* need to free(ptr1) */
		275	EIO_FLAG_PTR2_FREE = 0x02, /* need to free(ptr2) */
		276	EIO_FLAG_GROUPADD = 0x04 /* some request was added to the group */
		277	};
		278
		279	/* undocumented/unsupported/private helper */
		280	/void eio_page_align (void addr, size_t length);*/
81		281
82	/* returns < 0 on error, errno set	282	/* returns < 0 on error, errno set
83	* need_poll, if non-zero, will be called when results are available	283	* need_poll, if non-zero, will be called when results are available
84	* and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself).	284	* and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself).
85	* done_poll is called when the need to poll is gone.	285	* done_poll is called when the need to poll is gone.
92		292
93	/* stop polling if poll took longer than duration seconds */	293	/* stop polling if poll took longer than duration seconds */
94	void eio_set_max_poll_time (eio_tstamp nseconds);	294	void eio_set_max_poll_time (eio_tstamp nseconds);
95	/* do not handle more then count requests in one call to eio_poll_cb */	295	/* do not handle more then count requests in one call to eio_poll_cb */
96	void eio_set_max_poll_reqs (unsigned int nreqs);	296	void eio_set_max_poll_reqs (unsigned int nreqs);
97	/* when != 0, then eio_submit blocks as long as nready > count */
98	void eio_set_max_outstanding (unsigned int maxreqs);
99	/* set maxinum number of idle threads */
100	void eio_set_max_idle (unsigned int nthreads);
101		297
102	/* set minimum required number	298	/* set minimum required number
103	* maximum wanted number	299	* maximum wanted number
104	* or maximum idle number of threads */	300	* or maximum idle number of threads */
105	void eio_set_min_parallel (unsigned int nthreads);	301	void eio_set_min_parallel (unsigned int nthreads);
106	void eio_set_max_parallel (unsigned int nthreads);	302	void eio_set_max_parallel (unsigned int nthreads);
107	void eio_set_max_idle (unsigned int nthreads);	303	void eio_set_max_idle (unsigned int nthreads);
		304	void eio_set_idle_timeout (unsigned int seconds);
108		305
109	unsigned int eio_nreqs (void); /* number of requests in-flight */	306	unsigned int eio_nreqs (void); /* number of requests in-flight */
110	unsigned int eio_nready (void); /* number of not-yet handled requests */	307	unsigned int eio_nready (void); /* number of not-yet handled requests */
111	unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */	308	unsigned int eio_npending (void); /* number of finished but unhandled requests */
112	unsigned int eio_nthreads (void); /* number of worker threads in use currently */	309	unsigned int eio_nthreads (void); /* number of worker threads in use currently */
113		310
114	/*****************************************************************************/	311	/*****************************************************************************/
115	/* high-level request API */	312	/* convenience wrappers */
116		313
117	eio_req *eio_fsync (int fd, eio_cb cb);	314	#ifndef EIO_NO_WRAPPERS
118	eio_req *eio_fdatasync (int fd, eio_cb cb);	315	eio_req eio_wd_open (const char path, int pri, eio_cb cb, void data); / result=wd */
119	eio_req *eio_dupclose (int fd, eio_cb cb);	316	eio_req eio_wd_close (eio_wd wd, int pri, eio_cb cb, void data);
120	eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb);	317	eio_req eio_nop (int pri, eio_cb cb, void data); /* does nothing except go through the whole process */
121	eio_req eio_read (int fd, off_t offs, size_t length, char data, eio_cb cb);
122	eio_req eio_write (int fd, off_t offs, size_t length, char data, eio_cb cb);
123	eio_req eio_fstat (int fd, eio_cb cb); / stat buffer=ptr2 allocates dynamically */
124	eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, eio_cb cb);
125	eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb);
126	eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb);
127	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb);
128	eio_req *eio_dup2 (int fd, int fd2, eio_cb cb);
129	eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb);
130	eio_req eio_open (const char path, int flags, mode_t mode, eio_cb cb);
131	eio_req eio_readlink (const char path, eio_cb cb); /* result=ptr2 allocated dynamically */
132	eio_req eio_stat (const char path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */
133	eio_req eio_lstat (const char path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */
134	eio_req eio_utime (const char path, eio_tstamp atime, eio_tstamp mtime, eio_cb cb);
135	eio_req eio_truncate (const char path, off_t offset, eio_cb cb);
136	eio_req eio_chmod (const char path, mode_t mode, eio_cb cb);
137	eio_req eio_mkdir (const char path, mode_t mode, eio_cb cb);
138	eio_req eio_chown (const char path, uid_t uid, gid_t gid, eio_cb cb);
139	eio_req eio_unlink (const char path, eio_cb cb);
140	eio_req eio_rmdir (const char path, eio_cb cb);
141	eio_req eio_readdir (const char path, eio_cb cb); /* result=ptr2 allocated dynamically */
142	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, eio_cb cb);
143	eio_req eio_busy (eio_tstamp delay, eio_cb cb); / ties a thread for this long, simulating busyness */	318	eio_req eio_busy (eio_tstamp delay, int pri, eio_cb cb, void data); /* ties a thread for this long, simulating busyness */
144	eio_req eio_nop (eio_cb cb); / does nothing except go through the whole process */	319	eio_req eio_sync (int pri, eio_cb cb, void data);
		320	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data);
		321	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data);
		322	eio_req eio_syncfs (int fd, int pri, eio_cb cb, void data);
		323	eio_req eio_msync (void addr, size_t length, int flags, int pri, eio_cb cb, void *data);
		324	eio_req eio_mtouch (void addr, size_t length, int flags, int pri, eio_cb cb, void *data);
		325	eio_req eio_mlock (void addr, size_t length, int pri, eio_cb cb, void *data);
		326	eio_req eio_mlockall (int flags, int pri, eio_cb cb, void data);
		327	eio_req eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void data);
		328	eio_req eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void data);
		329	eio_req eio_close (int fd, int pri, eio_cb cb, void data);
		330	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data);
		331	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
		332	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
		333	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data); /* stat buffer=ptr2 allocated dynamically */
		334	eio_req eio_fstatvfs (int fd, int pri, eio_cb cb, void data); /* stat buffer=ptr2 allocated dynamically */
		335	eio_req eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void data);
		336	eio_req eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void data);
		337	eio_req eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void data);
		338	eio_req eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void data);
		339	eio_req eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void data);
		340	eio_req eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void data);
		341	eio_req eio_open (const char path, int flags, mode_t mode, int pri, eio_cb cb, void *data);
		342	eio_req eio_utime (const char path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
		343	eio_req eio_truncate (const char path, off_t offset, int pri, eio_cb cb, void *data);
		344	eio_req eio_chown (const char path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data);
		345	eio_req eio_chmod (const char path, mode_t mode, int pri, eio_cb cb, void *data);
		346	eio_req eio_mkdir (const char path, mode_t mode, int pri, eio_cb cb, void *data);
		347	eio_req eio_readdir (const char path, int flags, int pri, eio_cb cb, void data); / result=ptr2 allocated dynamically */
		348	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data);
		349	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data);
		350	eio_req eio_readlink (const char path, int pri, eio_cb cb, void data); / result=ptr2 allocated dynamically */
		351	eio_req eio_realpath (const char path, int pri, eio_cb cb, void data); / result=ptr2 allocated dynamically */
		352	eio_req eio_stat (const char path, int pri, eio_cb cb, void data); / stat buffer=ptr2 allocated dynamically */
		353	eio_req eio_lstat (const char path, int pri, eio_cb cb, void data); / stat buffer=ptr2 allocated dynamically */
		354	eio_req eio_statvfs (const char path, int pri, eio_cb cb, void data); / stat buffer=ptr2 allocated dynamically */
		355	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data);
		356	eio_req eio_link (const char path, const char new_path, int pri, eio_cb cb, void data);
		357	eio_req eio_symlink (const char path, const char new_path, int pri, eio_cb cb, void data);
		358	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data);
		359	eio_req eio_custom (void (execute)(eio_req ), int pri, eio_cb cb, void data);
		360	#endif
145		361
		362	/*****************************************************************************/
146	/* for groups */	363	/* groups */
		364
147	eio_req *eio_grp (eio_cb cb);	365	eio_req eio_grp (eio_cb cb, void data);
148	void eio_grp_feed (eio_req grp, int limit, void (feed)(eio_req *req));	366	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit);
		367	void eio_grp_limit (eio_req *grp, int limit);
149	void eio_grp_add (eio_req grp, eio_req req);	368	void eio_grp_add (eio_req grp, eio_req req);
150	void eio_grp_cancel (eio_req grp); / cancels all sub requests but not the group */	369	void eio_grp_cancel (eio_req grp); / cancels all sub requests but not the group */
151		370
152	/*****************************************************************************/	371	/*****************************************************************************/
153	/* low-level request API */	372	/* request api */
154
155	/* must be used to initialise eio_req's */
156	#define EIO_INIT(req,prio,finish_cb, destroy_cb) \
157	memset ((req), 0, sizeof (eio_req)); \
158	(req)->pri = (prio) + EIO_PRI_BIAS; \
159	(req)->finish = (finish_cb); \
160	(req)->destroy = (destroy_cb)
161		373
162	/* true if the request was cancelled, useful in the invoke callback */	374	/* true if the request was cancelled, useful in the invoke callback */
163	#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED)	375	#define EIO_CANCELLED(req) ((req)->cancelled)
		376
		377	#define EIO_RESULT(req) ((req)->result)
		378	/* returns a pointer to the result buffer allocated by eio */
		379	#define EIO_BUF(req) ((req)->ptr2)
		380	#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req))
		381	#define EIO_STATVFS_BUF(req) ((EIO_STRUCT_STATVFS *)EIO_BUF(req))
		382	#define EIO_PATH(req) ((char *)(req)->ptr1)
164		383
165	/* submit a request for execution */	384	/* submit a request for execution */
166	void eio_submit (eio_req *req);	385	void eio_submit (eio_req *req);
167	/* cancel a request as soon fast as possible */	386	/* cancel a request as soon fast as possible, if possible */
168	void eio_cancel (eio_req *req);	387	void eio_cancel (eio_req *req);
169	/* destroy a request that has never been submitted */
170	void eio_destroy (eio_req *req);
171		388
172	#endif	389	/*****************************************************************************/
		390	/* convenience functions */
173		391
		392	eio_ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count);
		393
		394	#ifdef __cplusplus
		395	}
		396	#endif
		397
		398	#endif
		399

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libeio/eio.h (file contents): Revision 1.1 by root, Sat May 10 17:16:39 2008 UTC vs. Revision 1.49 by root, Tue Sep 27 12:36:19 2011 UTC

Diff Legend

Comparing libeio/eio.h (file contents):
Revision 1.1 by root, Sat May 10 17:16:39 2008 UTC vs.
Revision 1.49 by root, Tue Sep 27 12:36:19 2011 UTC