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

Comparing libeio/eio.h (file contents):
Revision 1.5 by root, Sun May 11 19:11:05 2008 UTC vs.
Revision 1.42 by root, Tue Jul 19 05:13:35 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>
		48	#include <signal.h>
5	#include <sys/types.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 void *data	57	# define EIO_REQ_MEMBERS
		58	#endif
		59
		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
13	#endif	66	# endif
		67	#endif
14		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;
		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	/* for readdir */
		94
		95	/* eio_readdir flags */
15	enum {	96	enum
		97	{
		98	EIO_READDIR_DENTS = 0x01, /* ptr2 contains eio_dirents, not just the (unsorted) names */
		99	EIO_READDIR_DIRS_FIRST = 0x02, /* dirents gets sorted into a good stat() ing order to find directories first */
		100	EIO_READDIR_STAT_ORDER = 0x04, /* dirents gets sorted into a good stat() ing order to quickly stat all files */
		101	EIO_READDIR_FOUND_UNKNOWN = 0x80, /* set by eio_readdir when _ARRAY was set and any TYPE=UNKNOWN's were found /
		102
		103	EIO_READDIR_CUSTOM1 = 0x100, /* for use by apps */
		104	EIO_READDIR_CUSTOM2 = 0x200 /* for use by apps */
		105	};
		106
		107	/* using "typical" values in the hope that the compiler will do something sensible */
		108	enum eio_dtype
		109	{
		110	EIO_DT_UNKNOWN = 0,
		111	EIO_DT_FIFO = 1,
		112	EIO_DT_CHR = 2,
		113	EIO_DT_MPC = 3, /* multiplexed char device (v7+coherent) */
		114	EIO_DT_DIR = 4,
		115	EIO_DT_NAM = 5, /* xenix special named file */
		116	EIO_DT_BLK = 6,
		117	EIO_DT_MPB = 7, /* multiplexed block device (v7+coherent) */
		118	EIO_DT_REG = 8,
		119	EIO_DT_NWK = 9, /* HP-UX network special */
		120	EIO_DT_CMP = 9, /* VxFS compressed */
		121	EIO_DT_LNK = 10,
		122	/* DT_SHAD = 11,*/
		123	EIO_DT_SOCK = 12,
		124	EIO_DT_DOOR = 13, /* solaris door */
		125	EIO_DT_WHT = 14,
		126	EIO_DT_MAX = 15 /* highest DT_VALUE ever, hopefully */
		127	};
		128
		129	struct eio_dirent
		130	{
		131	int nameofs; /* offset of null-terminated name string in (char )req->ptr2 /
		132	unsigned short namelen; /* size of filename without trailing 0 */
		133	unsigned char type; /* one of EIO_DT_* */
		134	signed char score; /* internal use */
		135	eio_ino_t inode; /* the inode number, if available, otherwise unspecified */
		136	};
		137
		138	/* eio_msync flags */
		139	enum
		140	{
		141	EIO_MS_ASYNC = 1,
		142	EIO_MS_INVALIDATE = 2,
		143	EIO_MS_SYNC = 4
		144	};
		145
		146	/* eio_mtouch flags */
		147	enum
		148	{
		149	EIO_MT_MODIFY = 1
		150	};
		151
		152	/* eio_sync_file_range flags */
		153	enum
		154	{
		155	EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1,
		156	EIO_SYNC_FILE_RANGE_WRITE = 2,
		157	EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4
		158	};
		159
		160	/* eio_fallocate flags */
		161	enum
		162	{
		163	EIO_FALLOC_FL_KEEP_SIZE = 1 /* MUST match the value in linux/falloc.h */
		164	};
		165
		166	/* timestamps and differences - feel free to use double in your code directly */
		167	typedef double eio_tstamp;
		168
		169	/* the eio request structure */
		170	enum
		171	{
16	EIO_QUIT,	172	EIO_CUSTOM,
17	EIO_OPEN, EIO_CLOSE, EIO_DUP2,	173	EIO_OPEN, EIO_CLOSE, EIO_DUP2,
18	EIO_READ, EIO_WRITE,	174	EIO_READ, EIO_WRITE,
19	EIO_READAHEAD, EIO_SENDFILE,	175	EIO_READAHEAD, EIO_SENDFILE,
20	EIO_STAT, EIO_LSTAT, EIO_FSTAT,	176	EIO_STAT, EIO_LSTAT, EIO_FSTAT,
		177	EIO_STATVFS, EIO_FSTATVFS,
21	EIO_TRUNCATE, EIO_FTRUNCATE,	178	EIO_TRUNCATE, EIO_FTRUNCATE,
22	EIO_UTIME, EIO_FUTIME,	179	EIO_UTIME, EIO_FUTIME,
23	EIO_CHMOD, EIO_FCHMOD,	180	EIO_CHMOD, EIO_FCHMOD,
24	EIO_CHOWN, EIO_FCHOWN,	181	EIO_CHOWN, EIO_FCHOWN,
25	EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC,	182	EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC,
		183	EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE,
		184	EIO_MLOCK, EIO_MLOCKALL,
26	EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,	185	EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,
27	EIO_MKNOD, EIO_READDIR,	186	EIO_MKNOD, EIO_READDIR,
28	EIO_LINK, EIO_SYMLINK, EIO_READLINK,	187	EIO_LINK, EIO_SYMLINK, EIO_READLINK, EIO_REALPATH,
29	EIO_GROUP, EIO_NOP,	188	EIO_GROUP, EIO_NOP,
30	EIO_BUSY,	189	EIO_BUSY
31	};	190	};
32		191
33	typedef double eio_tstamp; /* feel free to use double in your code directly */	192	/* mlockall constants */
34
35	/* eio request structure */
36	/* this structure is mostly read-only */
37	struct eio_req
38	{
39	eio_req volatile next; / private */
40
41	ssize_t result; /* result of syscall, e.g. result = read (... */
42	off_t offs; /* read, write, truncate, readahead: file offset; mknod: dev_t */
43	size_t size; /* read, write, readahead, sendfile: length */
44	void ptr1; / all applicable requests: pathname, old name */
45	void ptr2; / all applicable requests: new name or memory buffer */
46	eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
47	eio_tstamp nv2; /* utime, futime: mtime */
48
49	int type; /* EIO_xxx constant */
50	int int1; /* all applicable requests: file descriptor; sendfile: output fd; open: flags */
51	long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode */
52	long int3; /* chown, fchown: gid */
53	int errorno; /* errno value on syscall return */
54
55	unsigned char flags; /* private */
56	unsigned char pri; /* the priority */
57
58	eio_cb finish;
59	void (destroy)(eio_req req);
60	void (feed)(eio_req req);
61
62	EIO_COMMON;
63
64	eio_req grp, grp_prev, grp_next, grp_first; /* private */
65	};
66
67	enum {	193	enum
68	EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */	194	{
69	EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */	195	EIO_MCL_CURRENT = 1,
70	EIO_FLAG_PTR2_FREE = 0x04 /* need to free(ptr2) */	196	EIO_MCL_FUTURE = 2,
71	};	197	};
		198
		199	/* request priorities */
72		200
73	enum {	201	enum {
74	EIO_PRI_MIN = -4,	202	EIO_PRI_MIN = -4,
75	EIO_PRI_MAX = 4,	203	EIO_PRI_MAX = 4,
76
77	EIO_DEFAULT_PRI = 0,	204	EIO_PRI_DEFAULT = 0,
78	EIO_PRI_BIAS = -EIO_PRI_MIN,
79	EIO_NUM_PRI = EIO_PRI_MAX + EIO_PRI_BIAS + 1
80	};	205	};
		206
		207	/* eio request structure */
		208	/* this structure is mostly read-only */
		209	/* when initialising it, all members must be zero-initialised */
		210	struct eio_req
		211	{
		212	eio_req volatile next; / private ETP */
		213
		214	eio_ssize_t result; /* result of syscall, e.g. result = read (... */
		215	off_t offs; /* read, write, truncate, readahead, sync_file_range, fallocate: file offset, mknod: dev_t */
		216	size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range, fallocate: length */
		217	void ptr1; / all applicable requests: pathname, old name; readdir: optional eio_dirents */
		218	void ptr2; / all applicable requests: new name or memory buffer; readdir: name strings */
		219	eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
		220	eio_tstamp nv2; /* utime, futime: mtime */
		221
		222	int type; /* EIO_xxx constant ETP */
		223	int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */
		224	long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range, fallocate: flags */
		225	long int3; /* chown, fchown: gid */
		226	int errorno; /* errno value on syscall return */
		227
		228	#if __i386 \|\| __amd64
		229	unsigned char cancelled;
		230	#else
		231	sig_atomic_t cancelled;
		232	#endif
		233
		234	unsigned char flags; /* private */
		235	signed char pri; /* the priority */
		236
		237	void *data;
		238	eio_cb finish;
		239	void (destroy)(eio_req req); /* called when request no longer needed */
		240	void (feed)(eio_req req); /* only used for group requests */
		241
		242	EIO_REQ_MEMBERS
		243
		244	eio_req grp, grp_prev, grp_next, grp_first; /* private */
		245	};
		246
		247	/* _private_ request flags */
		248	enum {
		249	EIO_FLAG_PTR1_FREE = 0x01, /* need to free(ptr1) */
		250	EIO_FLAG_PTR2_FREE = 0x02, /* need to free(ptr2) */
		251	EIO_FLAG_GROUPADD = 0x04 /* some request was added to the group */
		252	};
		253
		254	/* undocumented/unsupported/private helper */
		255	/void eio_page_align (void addr, size_t length);*/
81		256
82	/* returns < 0 on error, errno set	257	/* returns < 0 on error, errno set
83	* need_poll, if non-zero, will be called when results are available	258	* 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).	259	* 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.	260	* done_poll is called when the need to poll is gone.
99	* maximum wanted number	274	* maximum wanted number
100	* or maximum idle number of threads */	275	* or maximum idle number of threads */
101	void eio_set_min_parallel (unsigned int nthreads);	276	void eio_set_min_parallel (unsigned int nthreads);
102	void eio_set_max_parallel (unsigned int nthreads);	277	void eio_set_max_parallel (unsigned int nthreads);
103	void eio_set_max_idle (unsigned int nthreads);	278	void eio_set_max_idle (unsigned int nthreads);
		279	void eio_set_idle_timeout (unsigned int seconds);
104		280
105	unsigned int eio_nreqs (void); /* number of requests in-flight */	281	unsigned int eio_nreqs (void); /* number of requests in-flight */
106	unsigned int eio_nready (void); /* number of not-yet handled requests */	282	unsigned int eio_nready (void); /* number of not-yet handled requests */
107	unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */	283	unsigned int eio_npending (void); /* number of finished but unhandled requests */
108	unsigned int eio_nthreads (void); /* number of worker threads in use currently */	284	unsigned int eio_nthreads (void); /* number of worker threads in use currently */
109		285
110	/*****************************************************************************/	286	/*****************************************************************************/
111	/* high-level request API */	287	/* convenience wrappers */
112		288
113	eio_req *eio_fsync (int fd, eio_cb cb);	289	#ifndef EIO_NO_WRAPPERS
114	eio_req *eio_fdatasync (int fd, eio_cb cb);	290	eio_req eio_nop (int pri, eio_cb cb, void data); /* does nothing except go through the whole process */
115	eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb);
116	eio_req eio_read (int fd, off_t offset, size_t length, void data, eio_cb cb);
117	eio_req eio_write (int fd, off_t offset, size_t length, void data, eio_cb cb);
118	eio_req eio_fstat (int fd, eio_cb cb); / stat buffer=ptr2 allocated dynamically */
119	eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, eio_cb cb);
120	eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb);
121	eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb);
122	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb);
123	eio_req *eio_dup2 (int fd, int fd2, eio_cb cb);
124	eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb);
125	eio_req eio_open (const char path, int flags, mode_t mode, eio_cb cb);
126	eio_req eio_readlink (const char path, eio_cb cb); /* result=ptr2 allocated dynamically */
127	eio_req eio_stat (const char path, eio_cb cb); /* stat buffer=ptr2 allocated dynamically */
128	eio_req eio_lstat (const char path, eio_cb cb); /* stat buffer=ptr2 allocated dynamically */
129	eio_req eio_utime (const char path, eio_tstamp atime, eio_tstamp mtime, eio_cb cb);
130	eio_req eio_truncate (const char path, off_t offset, eio_cb cb);
131	eio_req eio_chown (const char path, uid_t uid, gid_t gid, eio_cb cb);
132	eio_req eio_chmod (const char path, mode_t mode, eio_cb cb);
133	eio_req eio_mkdir (const char path, mode_t mode, eio_cb cb);
134	eio_req eio_unlink (const char path, eio_cb cb);
135	eio_req eio_rmdir (const char path, eio_cb cb);
136	eio_req eio_readdir (const char path, eio_cb cb); /* result=ptr2 allocated dynamically */
137	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, eio_cb cb);
138	eio_req eio_busy (eio_tstamp delay, eio_cb cb); / ties a thread for this long, simulating busyness */	291	eio_req eio_busy (eio_tstamp delay, int pri, eio_cb cb, void data); /* ties a thread for this long, simulating busyness */
139	eio_req eio_nop (eio_cb cb); / does nothing except go through the whole process */	292	eio_req eio_sync (int pri, eio_cb cb, void data);
		293	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data);
		294	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data);
		295	eio_req eio_msync (void addr, size_t length, int flags, int pri, eio_cb cb, void *data);
		296	eio_req eio_mtouch (void addr, size_t length, int flags, int pri, eio_cb cb, void *data);
		297	eio_req eio_mlock (void addr, size_t length, int pri, eio_cb cb, void *data);
		298	eio_req eio_mlockall (int flags, int pri, eio_cb cb, void data);
		299	eio_req eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void data);
		300	eio_req eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void data);
		301	eio_req eio_close (int fd, int pri, eio_cb cb, void data);
		302	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data);
		303	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
		304	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
		305	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data); /* stat buffer=ptr2 allocated dynamically */
		306	eio_req eio_fstatvfs (int fd, int pri, eio_cb cb, void data); /* stat buffer=ptr2 allocated dynamically */
		307	eio_req eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void data);
		308	eio_req eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void data);
		309	eio_req eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void data);
		310	eio_req eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void data);
		311	eio_req eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void data);
		312	eio_req eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void data);
		313	eio_req eio_open (const char path, int flags, mode_t mode, int pri, eio_cb cb, void *data);
		314	eio_req eio_utime (const char path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
		315	eio_req eio_truncate (const char path, off_t offset, int pri, eio_cb cb, void *data);
		316	eio_req eio_chown (const char path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data);
		317	eio_req eio_chmod (const char path, mode_t mode, int pri, eio_cb cb, void *data);
		318	eio_req eio_mkdir (const char path, mode_t mode, int pri, eio_cb cb, void *data);
		319	eio_req eio_readdir (const char path, int flags, int pri, eio_cb cb, void data); / result=ptr2 allocated dynamically */
		320	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data);
		321	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data);
		322	eio_req eio_readlink (const char path, int pri, eio_cb cb, void data); / result=ptr2 allocated dynamically */
		323	eio_req eio_realpath (const char path, int pri, eio_cb cb, void data); / result=ptr2 allocated dynamically */
		324	eio_req eio_stat (const char path, int pri, eio_cb cb, void data); / stat buffer=ptr2 allocated dynamically */
		325	eio_req eio_lstat (const char path, int pri, eio_cb cb, void data); / stat buffer=ptr2 allocated dynamically */
		326	eio_req eio_statvfs (const char path, int pri, eio_cb cb, void data); / stat buffer=ptr2 allocated dynamically */
		327	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data);
		328	eio_req eio_link (const char path, const char new_path, int pri, eio_cb cb, void data);
		329	eio_req eio_symlink (const char path, const char new_path, int pri, eio_cb cb, void data);
		330	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data);
		331	eio_req eio_custom (void (execute)(eio_req ), int pri, eio_cb cb, void data);
		332	#endif
140		333
		334	/*****************************************************************************/
141	/* for groups */	335	/* groups */
		336
142	eio_req *eio_grp (eio_cb cb);	337	eio_req eio_grp (eio_cb cb, void data);
143	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit);	338	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit);
144	void eio_grp_limit (eio_req *grp, int limit);	339	void eio_grp_limit (eio_req *grp, int limit);
145	void eio_grp_add (eio_req grp, eio_req req);	340	void eio_grp_add (eio_req grp, eio_req req);
146	void eio_grp_cancel (eio_req grp); / cancels all sub requests but not the group */	341	void eio_grp_cancel (eio_req grp); / cancels all sub requests but not the group */
147		342
148	/*****************************************************************************/	343	/*****************************************************************************/
149	/* low-level request API */	344	/* request api */
150
151	/* must be used to initialise eio_req's */
152	#define EIO_INIT(req,prio,finish_cb, destroy_cb) \
153	memset ((req), 0, sizeof (eio_req)); \
154	(req)->pri = (prio) + EIO_PRI_BIAS; \
155	(req)->finish = (finish_cb); \
156	(req)->destroy = (destroy_cb)
157		345
158	/* true if the request was cancelled, useful in the invoke callback */	346	/* true if the request was cancelled, useful in the invoke callback */
159	#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED)	347	#define EIO_CANCELLED(req) ((req)->cancelled)
		348
		349	#define EIO_RESULT(req) ((req)->result)
		350	/* returns a pointer to the result buffer allocated by eio */
		351	#define EIO_BUF(req) ((req)->ptr2)
		352	#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req))
		353	#define EIO_STATVFS_BUF(req) ((EIO_STRUCT_STATVFS *)EIO_BUF(req))
		354	#define EIO_PATH(req) ((char *)(req)->ptr1)
160		355
161	/* submit a request for execution */	356	/* submit a request for execution */
162	void eio_submit (eio_req *req);	357	void eio_submit (eio_req *req);
163	/* cancel a request as soon fast as possible */	358	/* cancel a request as soon fast as possible, if possible */
164	void eio_cancel (eio_req *req);	359	void eio_cancel (eio_req *req);
165	/* destroy a request that has never been submitted */
166	void eio_destroy (eio_req *req);
167		360
168	/*****************************************************************************/	361	/*****************************************************************************/
169	/* convinience functions */	362	/* convenience functions */
170		363
171	/ssize_t eio_sendfile (int ofd, int ifd, off_t offset, size_t count)/	364	eio_ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count);
172		365
		366	#ifdef __cplusplus
		367	}
173	#endif	368	#endif
174		369
		370	#endif
		371

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Comparing libeio/eio.h (file contents): Revision 1.5 by root, Sun May 11 19:11:05 2008 UTC vs. Revision 1.42 by root, Tue Jul 19 05:13:35 2011 UTC

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Comparing libeio/eio.h (file contents):
Revision 1.5 by root, Sun May 11 19:11:05 2008 UTC vs.
Revision 1.42 by root, Tue Jul 19 05:13:35 2011 UTC