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/cvs/libeio/eio.h
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Comparing libeio/eio.h (file contents):
Revision 1.14 by root, Tue Jun 3 05:12:51 2008 UTC vs.
Revision 1.18 by root, Wed Oct 22 18:15:36 2008 UTC

… …
58#ifndef EIO_STRUCT_STAT 58#ifndef EIO_STRUCT_STAT
59# define EIO_STRUCT_STAT struct stat 59# define EIO_STRUCT_STAT struct stat
60#endif 60#endif
61 61
62enum { 62enum {
63 EIO_CUSTOM,
63 EIO_OPEN, EIO_CLOSE, EIO_DUP2, 64 EIO_OPEN, EIO_CLOSE, EIO_DUP2,
64 EIO_READ, EIO_WRITE, 65 EIO_READ, EIO_WRITE,
65 EIO_READAHEAD, EIO_SENDFILE, 66 EIO_READAHEAD, EIO_SENDFILE,
66 EIO_STAT, EIO_LSTAT, EIO_FSTAT, 67 EIO_STAT, EIO_LSTAT, EIO_FSTAT,
67 EIO_TRUNCATE, EIO_FTRUNCATE, 68 EIO_TRUNCATE, EIO_FTRUNCATE,
68 EIO_UTIME, EIO_FUTIME, 69 EIO_UTIME, EIO_FUTIME,
69 EIO_CHMOD, EIO_FCHMOD, 70 EIO_CHMOD, EIO_FCHMOD,
70 EIO_CHOWN, EIO_FCHOWN, 71 EIO_CHOWN, EIO_FCHOWN,
71 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, 72 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC,
73 EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE,
72 EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, 74 EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,
73 EIO_MKNOD, EIO_READDIR, 75 EIO_MKNOD, EIO_READDIR,
74 EIO_LINK, EIO_SYMLINK, EIO_READLINK, 76 EIO_LINK, EIO_SYMLINK, EIO_READLINK,
75 EIO_GROUP, EIO_NOP, 77 EIO_GROUP, EIO_NOP,
76 EIO_BUSY, EIO_CUSTOM 78 EIO_BUSY
79};
80
81/* eio_sync_file_range flags */
82
83enum {
84 EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1,
85 EIO_SYNC_FILE_RANGE_WRITE = 2,
86 EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4
77}; 87};
78 88
79typedef double eio_tstamp; /* feel free to use double in your code directly */ 89typedef double eio_tstamp; /* feel free to use double in your code directly */
80 90
81/* eio request structure */ 91/* eio request structure */
… …
83struct eio_req 93struct eio_req
84{ 94{
85 eio_req volatile *next; /* private ETP */ 95 eio_req volatile *next; /* private ETP */
86 96
87 ssize_t result; /* result of syscall, e.g. result = read (... */ 97 ssize_t result; /* result of syscall, e.g. result = read (... */
88 off_t offs; /* read, write, truncate, readahead: file offset; mknod: dev_t */ 98 off_t offs; /* read, write, truncate, readahead, sync_file_range: file offset */
89 size_t size; /* read, write, readahead, sendfile: length */ 99 size_t size; /* read, write, readahead, sendfile, msync, sync_file_range: length */
90 void *ptr1; /* all applicable requests: pathname, old name */ 100 void *ptr1; /* all applicable requests: pathname, old name */
91 void *ptr2; /* all applicable requests: new name or memory buffer */ 101 void *ptr2; /* all applicable requests: new name or memory buffer */
92 eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ 102 eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
93 eio_tstamp nv2; /* utime, futime: mtime */ 103 eio_tstamp nv2; /* utime, futime: mtime */
94 104
95 int type; /* EIO_xxx constant ETP */ 105 int type; /* EIO_xxx constant ETP */
96 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open: flags */ 106 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync: flags */
97 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode */ 107 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range: flags */
98 long int3; /* chown, fchown: gid */ 108 long int3; /* chown, fchown: gid; mknod: dev_t */
99 int errorno; /* errno value on syscall return */ 109 int errorno; /* errno value on syscall return */
100 110
101 unsigned char flags; /* private */ 111 unsigned char flags; /* private */
102 signed char pri; /* the priority */ 112 signed char pri; /* the priority */
103 113
… …
109 EIO_REQ_MEMBERS 119 EIO_REQ_MEMBERS
110 120
111 eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ 121 eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */
112}; 122};
113 123
124/* _private_ flags */
114enum { 125enum {
115 EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */ 126 EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */
116 EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */ 127 EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */
117 EIO_FLAG_PTR2_FREE = 0x04 /* need to free(ptr2) */ 128 EIO_FLAG_PTR2_FREE = 0x04, /* need to free(ptr2) */
129 EIO_FLAG_GROUPADD = 0x08 /* some request was added to the group */
118}; 130};
119 131
120enum { 132enum {
121 EIO_PRI_MIN = -4, 133 EIO_PRI_MIN = -4,
122 EIO_PRI_MAX = 4, 134 EIO_PRI_MAX = 4,
… …
158eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ 170eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */
159eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ 171eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */
160eio_req *eio_sync (int pri, eio_cb cb, void *data); 172eio_req *eio_sync (int pri, eio_cb cb, void *data);
161eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); 173eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data);
162eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); 174eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data);
175eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
176eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
177eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data);
163eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); 178eio_req *eio_close (int fd, int pri, eio_cb cb, void *data);
164eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); 179eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data);
165eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); 180eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
166eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); 181eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
167eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 182eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */

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