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Comparing libeio/eio.h (file contents):
Revision 1.16 by root, Sun Sep 21 00:23:45 2008 UTC vs.
Revision 1.50 by root, Sun Apr 1 17:22:42 2012 UTC

1/* 1/*
2 * libeio API header 2 * libeio API header
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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 *
… …
43#ifdef __cplusplus 43#ifdef __cplusplus
44extern "C" { 44extern "C" {
45#endif 45#endif
46 46
47#include <stddef.h> 47#include <stddef.h>
48#include <signal.h>
48#include <sys/types.h> 49#include <sys/types.h>
49 50
50typedef struct eio_req eio_req; 51typedef struct eio_req eio_req;
52typedef struct eio_dirent eio_dirent;
51 53
52typedef int (*eio_cb)(eio_req *req); 54typedef int (*eio_cb)(eio_req *req);
53 55
54#ifndef EIO_REQ_MEMBERS 56#ifndef EIO_REQ_MEMBERS
55# define EIO_REQ_MEMBERS 57# define EIO_REQ_MEMBERS
56#endif 58#endif
57 59
58#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
59# define EIO_STRUCT_STAT struct stat 65# define EIO_STRUCT_STAT struct stat
60#endif 66# endif
67#endif
61 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
95typedef 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
100eio_wd eio_wd_open_sync (eio_wd wd, const char *path);
101void eio_wd_close_sync (eio_wd wd);
102
103/* for readdir */
104
105/* eio_readdir flags */
62enum { 106enum
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 */
118enum 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
139struct 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 */
149enum
150{
151 EIO_MS_ASYNC = 1,
152 EIO_MS_INVALIDATE = 2,
153 EIO_MS_SYNC = 4
154};
155
156/* eio_mtouch flags */
157enum
158{
159 EIO_MT_MODIFY = 1
160};
161
162/* eio_sync_file_range flags */
163enum
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 */
171enum
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 */
177typedef double eio_tstamp;
178
179/* the eio request structure */
180enum
181{
63 EIO_CUSTOM, 182 EIO_CUSTOM,
183 EIO_WD_OPEN, EIO_WD_CLOSE,
184
64 EIO_OPEN, EIO_CLOSE, EIO_DUP2, 185 EIO_CLOSE, EIO_DUP2,
65 EIO_READ, EIO_WRITE, 186 EIO_SEEK, EIO_READ, EIO_WRITE,
66 EIO_READAHEAD, EIO_SENDFILE, 187 EIO_READAHEAD, EIO_SENDFILE,
67 EIO_STAT, EIO_LSTAT, EIO_FSTAT, 188 EIO_FSTAT, EIO_FSTATVFS,
68 EIO_TRUNCATE, EIO_FTRUNCATE, 189 EIO_FTRUNCATE, EIO_FUTIME, EIO_FCHMOD, EIO_FCHOWN,
69 EIO_UTIME, EIO_FUTIME,
70 EIO_CHMOD, EIO_FCHMOD,
71 EIO_CHOWN, EIO_FCHOWN,
72 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_MSYNC, EIO_MTOUCH, 190 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_SYNCFS,
73 EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, 191 EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE,
74 EIO_MKNOD, EIO_READDIR, 192 EIO_MLOCK, EIO_MLOCKALL,
75 EIO_LINK, EIO_SYMLINK, EIO_READLINK,
76 EIO_GROUP, EIO_NOP, 193 EIO_GROUP, EIO_NOP,
77 EIO_BUSY, 194 EIO_BUSY,
78};
79 195
80typedef 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,
81 200
82/* eio request structure */ 201 /* all the following requests use wd + ptr1 as path in xxxat functions */
83/* this structure is mostly read-only */ 202 EIO_OPEN,
84struct eio_req 203 EIO_STAT, EIO_LSTAT,
85{ 204 EIO_TRUNCATE,
86 eio_req volatile *next; /* private ETP */ 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,
87 211
88 ssize_t result; /* result of syscall, e.g. result = read (... */ 212 EIO_REQ_TYPE_NUM
89 off_t offs; /* read, write, truncate, readahead: file offset */
90 size_t size; /* read, write, readahead, sendfile, msync: length */
91 void *ptr1; /* all applicable requests: pathname, old name */
92 void *ptr2; /* all applicable requests: new name or memory buffer */
93 eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
94 eio_tstamp nv2; /* utime, futime: mtime */
95
96 int type; /* EIO_xxx constant ETP */
97 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync: flags */
98 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode */
99 long int3; /* chown, fchown: gid; mknod: dev_t */
100 int errorno; /* errno value on syscall return */
101
102 unsigned char flags; /* private */
103 signed char pri; /* the priority */
104
105 void *data;
106 eio_cb finish;
107 void (*destroy)(eio_req *req); /* called when requets no longer needed */
108 void (*feed)(eio_req *req); /* only used for group requests */
109
110 EIO_REQ_MEMBERS
111
112 eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */
113}; 213};
114 214
215/* seek whence modes */
216/* these are guaranteed to hasve the traditional 0, 1, 2 values, */
217/* so you might as wlel use those */
115enum { 218enum
116 EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */ 219{
117 EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */ 220 EIO_SEEK_SET = 0,
118 EIO_FLAG_PTR2_FREE = 0x04 /* need to free(ptr2) */ 221 EIO_SEEK_CUR = 1,
222 EIO_SEEK_END = 2
119}; 223};
224
225
226/* mlockall constants */
227enum
228{
229 EIO_MCL_CURRENT = 1,
230 EIO_MCL_FUTURE = 2
231};
232
233/* request priorities */
120 234
121enum { 235enum {
122 EIO_PRI_MIN = -4, 236 EIO_PRI_MIN = -4,
123 EIO_PRI_MAX = 4, 237 EIO_PRI_MAX = 4,
124 EIO_PRI_DEFAULT = 0, 238 EIO_PRI_DEFAULT = 0
125}; 239};
240
241/* eio request structure */
242/* this structure is mostly read-only */
243/* when initialising it, all members must be zero-initialised */
244struct eio_req
245{
246 eio_req volatile *next; /* private ETP */
247
248 eio_wd wd; /* all applicable requests: working directory of pathname, old name; wd_open: return wd */
249
250 eio_ssize_t result; /* result of syscall, e.g. result = read (... */
251 off_t offs; /* read, write, truncate, readahead, sync_file_range, fallocate: file offset, mknod: dev_t */
252 size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range, fallocate: length */
253 void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */
254 void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */
255 eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
256 eio_tstamp nv2; /* utime, futime: mtime */
257
258 int type; /* EIO_xxx constant ETP */
259 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */
260 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, seek: whence, sync_file_range, fallocate: flags */
261 long int3; /* chown, fchown: gid; rename, link: working directory of new name */
262 int errorno; /* errno value on syscall return */
263
264#if __i386 || __amd64
265 unsigned char cancelled;
266#else
267 sig_atomic_t cancelled;
268#endif
269
270 unsigned char flags; /* private */
271 signed char pri; /* the priority */
272
273 void *data;
274 eio_cb finish;
275 void (*destroy)(eio_req *req); /* called when request no longer needed */
276 void (*feed)(eio_req *req); /* only used for group requests */
277
278 EIO_REQ_MEMBERS
279
280 eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */
281};
282
283/* _private_ request flags */
284enum {
285 EIO_FLAG_PTR1_FREE = 0x01, /* need to free(ptr1) */
286 EIO_FLAG_PTR2_FREE = 0x02, /* need to free(ptr2) */
287 EIO_FLAG_GROUPADD = 0x04 /* some request was added to the group */
288};
289
290/* undocumented/unsupported/private helper */
291/*void eio_page_align (void **addr, size_t *length);*/
126 292
127/* returns < 0 on error, errno set 293/* returns < 0 on error, errno set
128 * need_poll, if non-zero, will be called when results are available 294 * need_poll, if non-zero, will be called when results are available
129 * and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself). 295 * and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself).
130 * done_poll is called when the need to poll is gone. 296 * done_poll is called when the need to poll is gone.
… …
144 * maximum wanted number 310 * maximum wanted number
145 * or maximum idle number of threads */ 311 * or maximum idle number of threads */
146void eio_set_min_parallel (unsigned int nthreads); 312void eio_set_min_parallel (unsigned int nthreads);
147void eio_set_max_parallel (unsigned int nthreads); 313void eio_set_max_parallel (unsigned int nthreads);
148void eio_set_max_idle (unsigned int nthreads); 314void eio_set_max_idle (unsigned int nthreads);
315void eio_set_idle_timeout (unsigned int seconds);
149 316
150unsigned int eio_nreqs (void); /* number of requests in-flight */ 317unsigned int eio_nreqs (void); /* number of requests in-flight */
151unsigned int eio_nready (void); /* number of not-yet handled requests */ 318unsigned int eio_nready (void); /* number of not-yet handled requests */
152unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */ 319unsigned int eio_npending (void); /* number of finished but unhandled requests */
153unsigned int eio_nthreads (void); /* number of worker threads in use currently */ 320unsigned int eio_nthreads (void); /* number of worker threads in use currently */
154 321
155/*****************************************************************************/ 322/*****************************************************************************/
156/* convinience wrappers */ 323/* convenience wrappers */
157 324
158#ifndef EIO_NO_WRAPPERS 325#ifndef EIO_NO_WRAPPERS
326eio_req *eio_wd_open (const char *path, int pri, eio_cb cb, void *data); /* result=wd */
327eio_req *eio_wd_close (eio_wd wd, int pri, eio_cb cb, void *data);
159eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ 328eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */
160eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ 329eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */
161eio_req *eio_sync (int pri, eio_cb cb, void *data); 330eio_req *eio_sync (int pri, eio_cb cb, void *data);
162eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); 331eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data);
163eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); 332eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data);
333eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data);
164eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); 334eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
165eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data); 335eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
336eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data);
337eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data);
338eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data);
339eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data);
166eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); 340eio_req *eio_close (int fd, int pri, eio_cb cb, void *data);
167eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); 341eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data);
342eio_req *eio_seek (int fd, off_t offset, int whence, int pri, eio_cb cb, void *data);
168eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); 343eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
169eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); 344eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
170eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 345eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
346eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
171eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); 347eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
172eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data); 348eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data);
173eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data); 349eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data);
174eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); 350eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data);
175eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data); 351eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data);
176eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data); 352eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data);
177eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data); 353eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data);
178eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); 354eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
179eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data); 355eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data);
180eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); 356eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data);
181eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data); 357eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data);
182eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data); 358eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data);
183eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ 359eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */
184eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data); 360eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data);
185eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data); 361eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data);
186eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ 362eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */
363eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */
187eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 364eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
188eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 365eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
366eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
189eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); 367eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data);
190eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 368eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
191eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 369eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
192eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 370eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
193eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data); 371eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data);
194#endif 372#endif
195 373
196/*****************************************************************************/ 374/*****************************************************************************/
197/* groups */ 375/* groups */
198 376
… …
204 382
205/*****************************************************************************/ 383/*****************************************************************************/
206/* request api */ 384/* request api */
207 385
208/* true if the request was cancelled, useful in the invoke callback */ 386/* true if the request was cancelled, useful in the invoke callback */
209#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED) 387#define EIO_CANCELLED(req) ((req)->cancelled)
210 388
211#define EIO_RESULT(req) ((req)->result) 389#define EIO_RESULT(req) ((req)->result)
212/* returns a pointer to the result buffer allocated by eio */ 390/* returns a pointer to the result buffer allocated by eio */
213#define EIO_BUF(req) ((req)->ptr2) 391#define EIO_BUF(req) ((req)->ptr2)
214#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req)) 392#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req))
393#define EIO_STATVFS_BUF(req) ((EIO_STRUCT_STATVFS *)EIO_BUF(req))
215#define EIO_PATH(req) ((char *)(req)->ptr1) 394#define EIO_PATH(req) ((char *)(req)->ptr1)
216 395
217/* submit a request for execution */ 396/* submit a request for execution */
218void eio_submit (eio_req *req); 397void eio_submit (eio_req *req);
219/* cancel a request as soon fast as possible, if possible */ 398/* cancel a request as soon fast as possible, if possible */
220void eio_cancel (eio_req *req); 399void eio_cancel (eio_req *req);
221/* destroy a request that has never been submitted */
222void eio_destroy (eio_req *req);
223 400
224/*****************************************************************************/ 401/*****************************************************************************/
225/* convinience functions */ 402/* convenience functions */
226 403
227ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); 404eio_ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count);
228 405
229#ifdef __cplusplus 406#ifdef __cplusplus
230} 407}
231#endif 408#endif
232 409

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