ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libeio/eio.h
(Generate patch)

Comparing libeio/eio.h (file contents):
Revision 1.8 by root, Tue May 13 18:50:27 2008 UTC vs.
Revision 1.11 by root, Tue May 13 19:34:11 2008 UTC

… …
6 6
7typedef struct eio_req eio_req; 7typedef struct eio_req eio_req;
8 8
9typedef int (*eio_cb)(eio_req *req); 9typedef int (*eio_cb)(eio_req *req);
10 10
11#ifndef EIO_COMMON 11#ifndef EIO_REQ_MEMBERS
12# define EIO_COMMON 12# define EIO_REQ_MEMBERS
13#endif 13#endif
14 14
15#ifndef EIO_STRUCT_STAT 15#ifndef EIO_STRUCT_STAT
16# define EIO_STRUCT_STAT struct stat 16# define EIO_STRUCT_STAT struct stat
17#endif 17#endif
… …
111unsigned int eio_nready (void); /* number of not-yet handled requests */ 111unsigned int eio_nready (void); /* number of not-yet handled requests */
112unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */ 112unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */
113unsigned int eio_nthreads (void); /* number of worker threads in use currently */ 113unsigned int eio_nthreads (void); /* number of worker threads in use currently */
114 114
115/*****************************************************************************/ 115/*****************************************************************************/
116/* high-level request API */ 116/* convinience wrappers */
117 117
118#ifndef EIO_NO_WRAPPERS
118eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ 119eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */
119eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ 120eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */
120eio_req *eio_sync (int pri, eio_cb cb, void *data); 121eio_req *eio_sync (int pri, eio_cb cb, void *data);
121eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); 122eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data);
122eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); 123eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data);
… …
145eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 146eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
146eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); 147eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data);
147eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 148eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
148eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 149eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
149eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 150eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
151#endif
150 152
153/*****************************************************************************/
151/* for groups */ 154/* groups */
155
152eio_req *eio_grp (eio_cb cb, void *data); 156eio_req *eio_grp (eio_cb cb, void *data);
153void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit); 157void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit);
154void eio_grp_limit (eio_req *grp, int limit); 158void eio_grp_limit (eio_req *grp, int limit);
155void eio_grp_add (eio_req *grp, eio_req *req); 159void eio_grp_add (eio_req *grp, eio_req *req);
156void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */ 160void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */
157 161
158/* cancel a request as soon fast as possible */ 162/*****************************************************************************/
159void eio_cancel (eio_req *req); 163/* request api */
160/* destroy a request that has never been submitted */
161void eio_destroy (eio_req *req);
162 164
163/* true if the request was cancelled, useful in the invoke callback */ 165/* true if the request was cancelled, useful in the invoke callback */
164#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED) 166#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED)
165 167
166#define EIO_RESULT(req) ((req)->result) 168#define EIO_RESULT(req) ((req)->result)
167/* returns a pointer to the result buffer allocated by eio */ 169/* returns a pointer to the result buffer allocated by eio */
168#define EIO_BUF(req) ((req)->ptr2) 170#define EIO_BUF(req) ((req)->ptr2)
169#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req)) 171#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req))
170#define EIO_PATH(req) ((char *)(req)->ptr1) 172#define EIO_PATH(req) ((char *)(req)->ptr1)
171 173
172/*****************************************************************************/
173/* low-level request API */
174
175/* must be used to initialise eio_req's */
176#define EIO_INIT(req,prio,finish_cb, destroy_cb) \
177 memset ((req), 0, sizeof (eio_req)); \
178 (req)->pri = (prio) + EIO_PRI_BIAS; \
179 (req)->finish = (finish_cb); \
180 (req)->destroy = (destroy_cb)
181
182/* submit a request for execution */ 174/* submit a request for execution */
183void eio_submit (eio_req *req); 175void eio_submit (eio_req *req);
176/* cancel a request as soon fast as possible, if possible */
177void eio_cancel (eio_req *req);
178/* destroy a request that has never been submitted */
179void eio_destroy (eio_req *req);
184 180
185/*****************************************************************************/ 181/*****************************************************************************/
186/* convinience functions */ 182/* convinience functions */
187 183
188ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); 184ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count);

Diff Legend

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