--- libeio/eio.h 2008/05/10 23:33:40 1.2 +++ libeio/eio.h 2008/05/13 18:50:27 1.8 @@ -2,17 +2,18 @@ #define EIO_H_ #include -#include +#include typedef struct eio_req eio_req; typedef int (*eio_cb)(eio_req *req); #ifndef EIO_COMMON -# define EIO_COMMON \ - eio_cb finish; \ - void (*destroy)(eio_req *req);\ - void *data +# define EIO_COMMON +#endif + +#ifndef EIO_STRUCT_STAT +# define EIO_STRUCT_STAT struct stat #endif enum { @@ -56,27 +57,31 @@ int errorno; /* errno value on syscall return */ unsigned char flags; /* private */ - unsigned char pri; /* the priority */ + signed char pri; /* the priority */ - void (*feed)(eio_req *req); + void *data; + eio_cb finish; + void (*destroy)(eio_req *req); /* called when requets no longer needed */ + void (*feed)(eio_req *req); /* only used for group requests */ - EIO_COMMON; + EIO_REQ_MEMBERS eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ }; enum { EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */ - EIO_FLAG_PTR2_FREE = 0x02, /* need to free(ptr2) */ + EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */ + EIO_FLAG_PTR2_FREE = 0x04 /* need to free(ptr2) */ }; enum { EIO_PRI_MIN = -4, EIO_PRI_MAX = 4, - EIO_DEFAULT_PRI = 0, + EIO_PRI_DEFAULT = 0, EIO_PRI_BIAS = -EIO_PRI_MIN, - EIO_NUM_PRI = EIO_PRI_MAX + EIO_PRI_BIAS + 1, + EIO_NUM_PRI = EIO_PRI_MAX + EIO_PRI_BIAS + 1 }; /* returns < 0 on error, errno set @@ -94,10 +99,6 @@ void eio_set_max_poll_time (eio_tstamp nseconds); /* do not handle more then count requests in one call to eio_poll_cb */ void eio_set_max_poll_reqs (unsigned int nreqs); -/* when != 0, then eio_submit blocks as long as nready > count */ -void eio_set_max_outstanding (unsigned int maxreqs); -/* set maxinum number of idle threads */ -void eio_set_max_idle (unsigned int nthreads); /* set minimum required number * maximum wanted number @@ -114,42 +115,60 @@ /*****************************************************************************/ /* high-level request API */ -eio_req *eio_fsync (int fd, eio_cb cb); -eio_req *eio_fdatasync (int fd, eio_cb cb); -eio_req *eio_dupclose (int fd, eio_cb cb); -eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb); -eio_req *eio_read (int fd, off_t offs, size_t length, char *data, eio_cb cb); -eio_req *eio_write (int fd, off_t offs, size_t length, char *data, eio_cb cb); -eio_req *eio_fstat (int fd, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */ -eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, eio_cb cb); -eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb); -eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb); -eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb); -eio_req *eio_dup2 (int fd, int fd2, eio_cb cb); -eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb); -eio_req *eio_open (const char *path, int flags, mode_t mode, eio_cb cb); -eio_req *eio_readlink (const char *path, eio_cb cb); /* result=ptr2 allocated dynamically */ -eio_req *eio_stat (const char *path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */ -eio_req *eio_lstat (const char *path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */ -eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, eio_cb cb); -eio_req *eio_truncate (const char *path, off_t offset, eio_cb cb); -eio_req *eio_chmod (const char *path, mode_t mode, eio_cb cb); -eio_req *eio_mkdir (const char *path, mode_t mode, eio_cb cb); -eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, eio_cb cb); -eio_req *eio_unlink (const char *path, eio_cb cb); -eio_req *eio_rmdir (const char *path, eio_cb cb); -eio_req *eio_readdir (const char *path, eio_cb cb); /* result=ptr2 allocated dynamically */ -eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, eio_cb cb); -eio_req *eio_busy (eio_tstamp delay, eio_cb cb); /* ties a thread for this long, simulating busyness */ -eio_req *eio_nop (eio_cb cb); /* does nothing except go through the whole process */ +eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */ +eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */ +eio_req *eio_sync (int pri, eio_cb cb, void *data); +eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data); +eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data); +eio_req *eio_close (int fd, int pri, eio_cb cb, void *data); +eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data); +eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); +eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data); +eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ +eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); +eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data); +eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data); +eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); +eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data); +eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data); +eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data); +eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data); +eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data); +eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data); +eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data); +eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data); +eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ +eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data); +eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data); +eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */ +eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ +eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */ +eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data); +eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data); +eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data); +eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data); /* for groups */ -eio_req *eio_grp (eio_cb cb); +eio_req *eio_grp (eio_cb cb, void *data); void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit); void eio_grp_limit (eio_req *grp, int limit); void eio_grp_add (eio_req *grp, eio_req *req); void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */ +/* cancel a request as soon fast as possible */ +void eio_cancel (eio_req *req); +/* destroy a request that has never been submitted */ +void eio_destroy (eio_req *req); + +/* true if the request was cancelled, useful in the invoke callback */ +#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED) + +#define EIO_RESULT(req) ((req)->result) +/* returns a pointer to the result buffer allocated by eio */ +#define EIO_BUF(req) ((req)->ptr2) +#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req)) +#define EIO_PATH(req) ((char *)(req)->ptr1) + /*****************************************************************************/ /* low-level request API */ @@ -160,15 +179,13 @@ (req)->finish = (finish_cb); \ (req)->destroy = (destroy_cb) -/* true if the request was cancelled, useful in the invoke callback */ -#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED) - /* submit a request for execution */ void eio_submit (eio_req *req); -/* cancel a request as soon fast as possible */ -void eio_cancel (eio_req *req); -/* destroy a request that has never been submitted */ -void eio_destroy (eio_req *req); + +/*****************************************************************************/ +/* convinience functions */ + +ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); #endif