|
|
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_REQ_MEMBERS |
56 | #ifndef EIO_REQ_MEMBERS |
12 | # define EIO_REQ_MEMBERS |
57 | # define EIO_REQ_MEMBERS |
13 | #endif |
58 | #endif |
14 | |
59 | |
15 | #ifndef EIO_STRUCT_STAT |
60 | #ifndef EIO_STRUCT_STAT |
|
|
61 | # ifdef _WIN32 |
|
|
62 | # define EIO_STRUCT_STAT struct _stati64 |
|
|
63 | # define EIO_STRUCT_STATI64 |
|
|
64 | # else |
16 | # define EIO_STRUCT_STAT struct stat |
65 | # define EIO_STRUCT_STAT struct stat |
17 | #endif |
66 | # endif |
|
|
67 | #endif |
18 | |
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 void *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 */ |
19 | 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 | { |
20 | EIO_QUIT, |
182 | EIO_CUSTOM, |
|
|
183 | EIO_WD_OPEN, EIO_WD_CLOSE, |
|
|
184 | |
21 | EIO_OPEN, EIO_CLOSE, EIO_DUP2, |
185 | EIO_CLOSE, EIO_DUP2, |
22 | EIO_READ, EIO_WRITE, |
186 | EIO_READ, EIO_WRITE, |
23 | EIO_READAHEAD, EIO_SENDFILE, |
187 | EIO_READAHEAD, EIO_SENDFILE, |
24 | EIO_STAT, EIO_LSTAT, EIO_FSTAT, |
188 | EIO_FSTAT, EIO_FSTATVFS, |
25 | EIO_TRUNCATE, EIO_FTRUNCATE, |
189 | EIO_FTRUNCATE, EIO_FUTIME, EIO_FCHMOD, EIO_FCHOWN, |
26 | EIO_UTIME, EIO_FUTIME, |
|
|
27 | EIO_CHMOD, EIO_FCHMOD, |
|
|
28 | EIO_CHOWN, EIO_FCHOWN, |
|
|
29 | EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, |
190 | EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_SYNCFS, |
30 | EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, |
191 | EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE, |
31 | EIO_MKNOD, EIO_READDIR, |
192 | EIO_MLOCK, EIO_MLOCKALL, |
32 | EIO_LINK, EIO_SYMLINK, EIO_READLINK, |
|
|
33 | EIO_GROUP, EIO_NOP, |
193 | EIO_GROUP, EIO_NOP, |
34 | EIO_BUSY, |
194 | EIO_BUSY, |
35 | }; |
|
|
36 | |
195 | |
37 | 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, |
38 | |
200 | |
39 | /* eio request structure */ |
201 | /* all the following requests use wd + ptr1 as path in xxxat functions */ |
40 | /* this structure is mostly read-only */ |
202 | EIO_OPEN, |
41 | struct eio_req |
203 | EIO_STAT, EIO_LSTAT, |
42 | { |
204 | EIO_TRUNCATE, |
43 | 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, |
44 | |
211 | |
45 | ssize_t result; /* result of syscall, e.g. result = read (... */ |
212 | EIO_REQ_TYPE_NUM |
46 | off_t offs; /* read, write, truncate, readahead: file offset; mknod: dev_t */ |
|
|
47 | size_t size; /* read, write, readahead, sendfile: length */ |
|
|
48 | void *ptr1; /* all applicable requests: pathname, old name */ |
|
|
49 | void *ptr2; /* all applicable requests: new name or memory buffer */ |
|
|
50 | eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ |
|
|
51 | eio_tstamp nv2; /* utime, futime: mtime */ |
|
|
52 | |
|
|
53 | int type; /* EIO_xxx constant */ |
|
|
54 | int int1; /* all applicable requests: file descriptor; sendfile: output fd; open: flags */ |
|
|
55 | long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode */ |
|
|
56 | long int3; /* chown, fchown: gid */ |
|
|
57 | int errorno; /* errno value on syscall return */ |
|
|
58 | |
|
|
59 | unsigned char flags; /* private */ |
|
|
60 | signed char pri; /* the priority */ |
|
|
61 | |
|
|
62 | void *data; |
|
|
63 | eio_cb finish; |
|
|
64 | void (*destroy)(eio_req *req); /* called when requets no longer needed */ |
|
|
65 | void (*feed)(eio_req *req); /* only used for group requests */ |
|
|
66 | |
|
|
67 | EIO_REQ_MEMBERS |
|
|
68 | |
|
|
69 | eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ |
|
|
70 | }; |
213 | }; |
71 | |
214 | |
|
|
215 | /* mlockall constants */ |
72 | enum { |
216 | enum |
73 | EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */ |
217 | { |
74 | EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */ |
218 | EIO_MCL_CURRENT = 1, |
75 | EIO_FLAG_PTR2_FREE = 0x04 /* need to free(ptr2) */ |
219 | EIO_MCL_FUTURE = 2, |
76 | }; |
220 | }; |
|
|
221 | |
|
|
222 | /* request priorities */ |
77 | |
223 | |
78 | enum { |
224 | enum { |
79 | EIO_PRI_MIN = -4, |
225 | EIO_PRI_MIN = -4, |
80 | EIO_PRI_MAX = 4, |
226 | EIO_PRI_MAX = 4, |
81 | |
|
|
82 | EIO_PRI_DEFAULT = 0, |
227 | EIO_PRI_DEFAULT = 0, |
83 | EIO_PRI_BIAS = -EIO_PRI_MIN, |
|
|
84 | EIO_NUM_PRI = EIO_PRI_MAX + EIO_PRI_BIAS + 1 |
|
|
85 | }; |
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);*/ |
86 | |
281 | |
87 | /* returns < 0 on error, errno set |
282 | /* returns < 0 on error, errno set |
88 | * 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 |
89 | * 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). |
90 | * done_poll is called when the need to poll is gone. |
285 | * done_poll is called when the need to poll is gone. |
… | |
… | |
104 | * maximum wanted number |
299 | * maximum wanted number |
105 | * or maximum idle number of threads */ |
300 | * or maximum idle number of threads */ |
106 | void eio_set_min_parallel (unsigned int nthreads); |
301 | void eio_set_min_parallel (unsigned int nthreads); |
107 | void eio_set_max_parallel (unsigned int nthreads); |
302 | void eio_set_max_parallel (unsigned int nthreads); |
108 | 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); |
109 | |
305 | |
110 | unsigned int eio_nreqs (void); /* number of requests in-flight */ |
306 | unsigned int eio_nreqs (void); /* number of requests in-flight */ |
111 | unsigned int eio_nready (void); /* number of not-yet handled requests */ |
307 | unsigned int eio_nready (void); /* number of not-yet handled requests */ |
112 | unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */ |
308 | unsigned int eio_npending (void); /* number of finished but unhandled requests */ |
113 | 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 */ |
114 | |
310 | |
115 | /*****************************************************************************/ |
311 | /*****************************************************************************/ |
116 | /* high-level request API */ |
312 | /* convenience wrappers */ |
117 | |
313 | |
118 | #ifndef EIO_NO_WRAPPERS |
314 | #ifndef EIO_NO_WRAPPERS |
119 | eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ |
315 | eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ |
120 | eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ |
316 | eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ |
121 | eio_req *eio_sync (int pri, eio_cb cb, void *data); |
317 | eio_req *eio_sync (int pri, eio_cb cb, void *data); |
122 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); |
318 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); |
123 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); |
319 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); |
|
|
320 | eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data); |
|
|
321 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); |
|
|
322 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); |
|
|
323 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data); |
|
|
324 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data); |
|
|
325 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data); |
|
|
326 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data); |
124 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); |
327 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); |
125 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); |
328 | eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); |
126 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); |
329 | eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); |
127 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); |
330 | eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); |
128 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
331 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
|
|
332 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
129 | eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); |
333 | eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); |
130 | eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data); |
334 | eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data); |
131 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data); |
335 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data); |
132 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); |
336 | eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data); |
133 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data); |
337 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data); |
134 | eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data); |
338 | eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data); |
135 | eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data); |
339 | eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data); |
136 | eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); |
340 | eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); |
137 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data); |
341 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data); |
138 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); |
342 | eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data); |
139 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data); |
343 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data); |
140 | eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data); |
344 | eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data); |
141 | eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ |
345 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ |
142 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data); |
346 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data); |
143 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data); |
347 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data); |
144 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ |
348 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ |
|
|
349 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ |
145 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
350 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
146 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
351 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
|
|
352 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
147 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); |
353 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); |
148 | eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
354 | eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
149 | eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
355 | eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
150 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
356 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
|
|
357 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data); |
151 | #endif |
358 | #endif |
152 | |
359 | |
|
|
360 | /*****************************************************************************/ |
153 | /* for groups */ |
361 | /* groups */ |
|
|
362 | |
154 | eio_req *eio_grp (eio_cb cb, void *data); |
363 | eio_req *eio_grp (eio_cb cb, void *data); |
155 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit); |
364 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit); |
156 | void eio_grp_limit (eio_req *grp, int limit); |
365 | void eio_grp_limit (eio_req *grp, int limit); |
157 | void eio_grp_add (eio_req *grp, eio_req *req); |
366 | void eio_grp_add (eio_req *grp, eio_req *req); |
158 | void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */ |
367 | void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */ |
159 | |
368 | |
160 | /* cancel a request as soon fast as possible */ |
369 | /*****************************************************************************/ |
161 | void eio_cancel (eio_req *req); |
370 | /* request api */ |
162 | /* destroy a request that has never been submitted */ |
|
|
163 | void eio_destroy (eio_req *req); |
|
|
164 | |
371 | |
165 | /* true if the request was cancelled, useful in the invoke callback */ |
372 | /* true if the request was cancelled, useful in the invoke callback */ |
166 | #define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED) |
373 | #define EIO_CANCELLED(req) ((req)->cancelled) |
167 | |
374 | |
168 | #define EIO_RESULT(req) ((req)->result) |
375 | #define EIO_RESULT(req) ((req)->result) |
169 | /* returns a pointer to the result buffer allocated by eio */ |
376 | /* returns a pointer to the result buffer allocated by eio */ |
170 | #define EIO_BUF(req) ((req)->ptr2) |
377 | #define EIO_BUF(req) ((req)->ptr2) |
171 | #define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req)) |
378 | #define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req)) |
|
|
379 | #define EIO_STATVFS_BUF(req) ((EIO_STRUCT_STATVFS *)EIO_BUF(req)) |
172 | #define EIO_PATH(req) ((char *)(req)->ptr1) |
380 | #define EIO_PATH(req) ((char *)(req)->ptr1) |
173 | |
|
|
174 | /*****************************************************************************/ |
|
|
175 | /* low-level request API */ |
|
|
176 | |
|
|
177 | /* must be used to initialise eio_req's */ |
|
|
178 | #define EIO_INIT(req,prio,finish_cb, destroy_cb) \ |
|
|
179 | memset ((req), 0, sizeof (eio_req)); \ |
|
|
180 | (req)->pri = (prio) + EIO_PRI_BIAS; \ |
|
|
181 | (req)->finish = (finish_cb); \ |
|
|
182 | (req)->destroy = (destroy_cb) |
|
|
183 | |
381 | |
184 | /* submit a request for execution */ |
382 | /* submit a request for execution */ |
185 | void eio_submit (eio_req *req); |
383 | void eio_submit (eio_req *req); |
|
|
384 | /* cancel a request as soon fast as possible, if possible */ |
|
|
385 | void eio_cancel (eio_req *req); |
186 | |
386 | |
187 | /*****************************************************************************/ |
387 | /*****************************************************************************/ |
188 | /* convinience functions */ |
388 | /* convenience functions */ |
189 | |
389 | |
190 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); |
390 | eio_ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); |
191 | |
391 | |
|
|
392 | #ifdef __cplusplus |
|
|
393 | } |
192 | #endif |
394 | #endif |
193 | |
395 | |
|
|
396 | #endif |
|
|
397 | |