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/cvs/libeio/eio.h
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Comparing libeio/eio.h (file contents):
Revision 1.12 by root, Sat May 17 12:17:25 2008 UTC vs.
Revision 1.17 by root, Sun Oct 12 22:30:33 2008 UTC

… …
38 */ 38 */
39 39
40#ifndef EIO_H_ 40#ifndef EIO_H_
41#define EIO_H_ 41#define EIO_H_
42 42
43#ifdef __cplusplus
44extern "C" {
45#endif
46
43#include <stddef.h> 47#include <stddef.h>
44#include <sys/types.h> 48#include <sys/types.h>
45 49
46typedef struct eio_req eio_req; 50typedef struct eio_req eio_req;
47 51
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54#ifndef EIO_STRUCT_STAT 58#ifndef EIO_STRUCT_STAT
55# define EIO_STRUCT_STAT struct stat 59# define EIO_STRUCT_STAT struct stat
56#endif 60#endif
57 61
58enum { 62enum {
63 EIO_CUSTOM,
59 EIO_OPEN, EIO_CLOSE, EIO_DUP2, 64 EIO_OPEN, EIO_CLOSE, EIO_DUP2,
60 EIO_READ, EIO_WRITE, 65 EIO_READ, EIO_WRITE,
61 EIO_READAHEAD, EIO_SENDFILE, 66 EIO_READAHEAD, EIO_SENDFILE,
62 EIO_STAT, EIO_LSTAT, EIO_FSTAT, 67 EIO_STAT, EIO_LSTAT, EIO_FSTAT,
63 EIO_TRUNCATE, EIO_FTRUNCATE, 68 EIO_TRUNCATE, EIO_FTRUNCATE,
64 EIO_UTIME, EIO_FUTIME, 69 EIO_UTIME, EIO_FUTIME,
65 EIO_CHMOD, EIO_FCHMOD, 70 EIO_CHMOD, EIO_FCHMOD,
66 EIO_CHOWN, EIO_FCHOWN, 71 EIO_CHOWN, EIO_FCHOWN,
67 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, 72 EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_MSYNC, EIO_MTOUCH,
68 EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, 73 EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,
69 EIO_MKNOD, EIO_READDIR, 74 EIO_MKNOD, EIO_READDIR,
70 EIO_LINK, EIO_SYMLINK, EIO_READLINK, 75 EIO_LINK, EIO_SYMLINK, EIO_READLINK,
71 EIO_GROUP, EIO_NOP, 76 EIO_GROUP, EIO_NOP,
72 EIO_BUSY, 77 EIO_BUSY,
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79struct eio_req 84struct eio_req
80{ 85{
81 eio_req volatile *next; /* private ETP */ 86 eio_req volatile *next; /* private ETP */
82 87
83 ssize_t result; /* result of syscall, e.g. result = read (... */ 88 ssize_t result; /* result of syscall, e.g. result = read (... */
84 off_t offs; /* read, write, truncate, readahead: file offset; mknod: dev_t */ 89 off_t offs; /* read, write, truncate, readahead: file offset */
85 size_t size; /* read, write, readahead, sendfile: length */ 90 size_t size; /* read, write, readahead, sendfile, msync: length */
86 void *ptr1; /* all applicable requests: pathname, old name */ 91 void *ptr1; /* all applicable requests: pathname, old name */
87 void *ptr2; /* all applicable requests: new name or memory buffer */ 92 void *ptr2; /* all applicable requests: new name or memory buffer */
88 eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ 93 eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
89 eio_tstamp nv2; /* utime, futime: mtime */ 94 eio_tstamp nv2; /* utime, futime: mtime */
90 95
91 int type; /* EIO_xxx constant ETP */ 96 int type; /* EIO_xxx constant ETP */
92 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open: flags */ 97 int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync: flags */
93 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode */ 98 long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode */
94 long int3; /* chown, fchown: gid */ 99 long int3; /* chown, fchown: gid; mknod: dev_t */
95 int errorno; /* errno value on syscall return */ 100 int errorno; /* errno value on syscall return */
96 101
97 unsigned char flags; /* private */ 102 unsigned char flags; /* private */
98 signed char pri; /* the priority */ 103 signed char pri; /* the priority */
99 104
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105 EIO_REQ_MEMBERS 110 EIO_REQ_MEMBERS
106 111
107 eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ 112 eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */
108}; 113};
109 114
115/* _private_ flags */
110enum { 116enum {
111 EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */ 117 EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */
112 EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */ 118 EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */
113 EIO_FLAG_PTR2_FREE = 0x04 /* need to free(ptr2) */ 119 EIO_FLAG_PTR2_FREE = 0x04, /* need to free(ptr2) */
120 EIO_FLAG_GROUPADD = 0x08 /* some request was added to the group */
114}; 121};
115 122
116enum { 123enum {
117 EIO_PRI_MIN = -4, 124 EIO_PRI_MIN = -4,
118 EIO_PRI_MAX = 4, 125 EIO_PRI_MAX = 4,
119
120 EIO_PRI_DEFAULT = 0, 126 EIO_PRI_DEFAULT = 0,
121}; 127};
122 128
123/* returns < 0 on error, errno set 129/* returns < 0 on error, errno set
124 * need_poll, if non-zero, will be called when results are available 130 * need_poll, if non-zero, will be called when results are available
125 * and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself). 131 * and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself).
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155eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ 161eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */
156eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ 162eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */
157eio_req *eio_sync (int pri, eio_cb cb, void *data); 163eio_req *eio_sync (int pri, eio_cb cb, void *data);
158eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); 164eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data);
159eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); 165eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data);
166eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
167eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
160eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); 168eio_req *eio_close (int fd, int pri, eio_cb cb, void *data);
161eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); 169eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data);
162eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); 170eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
163eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); 171eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
164eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 172eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
… …
182eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ 190eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
183eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); 191eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data);
184eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 192eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
185eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 193eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
186eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); 194eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
195eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data);
187#endif 196#endif
188 197
189/*****************************************************************************/ 198/*****************************************************************************/
190/* groups */ 199/* groups */
191 200
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217/*****************************************************************************/ 226/*****************************************************************************/
218/* convinience functions */ 227/* convinience functions */
219 228
220ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); 229ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count);
221 230
231#ifdef __cplusplus
232}
222#endif 233#endif
223 234
235#endif
236

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