1 | /* |
1 | /* |
2 | * libeio API header |
2 | * libeio API header |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 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 | * |
… | |
… | |
180 | struct eio_req |
180 | struct eio_req |
181 | { |
181 | { |
182 | eio_req volatile *next; /* private ETP */ |
182 | eio_req volatile *next; /* private ETP */ |
183 | |
183 | |
184 | ssize_t result; /* result of syscall, e.g. result = read (... */ |
184 | ssize_t result; /* result of syscall, e.g. result = read (... */ |
185 | off_t offs; /* read, write, truncate, readahead, sync_file_range: file offset */ |
185 | off_t offs; /* read, write, truncate, readahead, sync_file_range: file offset, mknod: dev_t */ |
186 | size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range: length */ |
186 | size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range: length */ |
187 | void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ |
187 | void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ |
188 | void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */ |
188 | void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */ |
189 | eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ |
189 | eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ |
190 | eio_tstamp nv2; /* utime, futime: mtime */ |
190 | eio_tstamp nv2; /* utime, futime: mtime */ |
191 | |
191 | |
192 | int type; /* EIO_xxx constant ETP */ |
192 | int type; /* EIO_xxx constant ETP */ |
193 | int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ |
193 | int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ |
194 | long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range: flags */ |
194 | long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range: flags */ |
195 | long int3; /* chown, fchown: gid; mknod: dev_t */ |
195 | long int3; /* chown, fchown: gid */ |
196 | int errorno; /* errno value on syscall return */ |
196 | int errorno; /* errno value on syscall return */ |
197 | |
197 | |
198 | unsigned char flags; /* private */ |
198 | unsigned char flags; /* private */ |
199 | signed char pri; /* the priority */ |
199 | signed char pri; /* the priority */ |
200 | |
200 | |
201 | void *data; |
201 | void *data; |
202 | eio_cb finish; |
202 | eio_cb finish; |
203 | void (*destroy)(eio_req *req); /* called when requets no longer needed */ |
203 | void (*destroy)(eio_req *req); /* called when request no longer needed */ |
204 | void (*feed)(eio_req *req); /* only used for group requests */ |
204 | void (*feed)(eio_req *req); /* only used for group requests */ |
205 | |
205 | |
206 | EIO_REQ_MEMBERS |
206 | EIO_REQ_MEMBERS |
207 | |
207 | |
208 | eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ |
208 | eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ |
… | |
… | |
239 | * maximum wanted number |
239 | * maximum wanted number |
240 | * or maximum idle number of threads */ |
240 | * or maximum idle number of threads */ |
241 | void eio_set_min_parallel (unsigned int nthreads); |
241 | void eio_set_min_parallel (unsigned int nthreads); |
242 | void eio_set_max_parallel (unsigned int nthreads); |
242 | void eio_set_max_parallel (unsigned int nthreads); |
243 | void eio_set_max_idle (unsigned int nthreads); |
243 | void eio_set_max_idle (unsigned int nthreads); |
|
|
244 | void eio_set_idle_timeout (unsigned int seconds); |
244 | |
245 | |
245 | unsigned int eio_nreqs (void); /* number of requests in-flight */ |
246 | unsigned int eio_nreqs (void); /* number of requests in-flight */ |
246 | unsigned int eio_nready (void); /* number of not-yet handled requests */ |
247 | unsigned int eio_nready (void); /* number of not-yet handled requests */ |
247 | unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */ |
248 | unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */ |
248 | unsigned int eio_nthreads (void); /* number of worker threads in use currently */ |
249 | unsigned int eio_nthreads (void); /* number of worker threads in use currently */ |
249 | |
250 | |
250 | /*****************************************************************************/ |
251 | /*****************************************************************************/ |
251 | /* convinience wrappers */ |
252 | /* convenience wrappers */ |
252 | |
253 | |
253 | #ifndef EIO_NO_WRAPPERS |
254 | #ifndef EIO_NO_WRAPPERS |
254 | eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ |
255 | eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ |
255 | eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ |
256 | eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ |
256 | eio_req *eio_sync (int pri, eio_cb cb, void *data); |
257 | eio_req *eio_sync (int pri, eio_cb cb, void *data); |
… | |
… | |
288 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
289 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ |
289 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); |
290 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); |
290 | eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
291 | eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
291 | eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
292 | eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
292 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
293 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); |
293 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data); |
294 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data); |
294 | #endif |
295 | #endif |
295 | |
296 | |
296 | /*****************************************************************************/ |
297 | /*****************************************************************************/ |
297 | /* groups */ |
298 | /* groups */ |
298 | |
299 | |