eio_sync_file_range
(PECL eio >= 0.0.1dev)
eio_sync_file_range — Sync a file segment with disk
Beschreibung
mixed
$fd,int
$offset,int
$nbytes,int
$flags,int
$pri = EIO_PRI_DEFAULT,callable
$callback = NULL,mixed
$data = NULL): resource
eio_sync_file_range() permits fine control when synchronizing the open file referred to by the file
descriptor fd with disk.
Parameter-Liste
-
fd -
File descriptor
-
offset -
The starting byte of the file range to be synchronized
-
nbytes -
Specifies the length of the range to be synchronized, in bytes. If
nbytesis zero, then all bytes fromoffsetthrough to the end of file are synchronized. -
flags -
A bit-mask. Can include any of the following values:
EIO_SYNC_FILE_RANGE_WAIT_BEFORE,EIO_SYNC_FILE_RANGE_WRITE,EIO_SYNC_FILE_RANGE_WAIT_AFTER. These flags have the same meaning as their SYNC_FILE_RANGE_* counterparts(seeSYNC_FILE_RANGE(2)man page). -
pri -
The request priority:
EIO_PRI_DEFAULT,EIO_PRI_MIN,EIO_PRI_MAX, ornull. Ifnullpassed,priinternally is set toEIO_PRI_DEFAULT. -
callback -
callbackfunction is called when the request is done. It should match the following prototype:void callback(mixed $data, int $result[, resource $req]);-
data -
is custom data passed to the request.
-
result -
request-specific result value; basically, the value returned by corresponding system call.
-
req -
is optional request resource which can be used with functions like eio_get_last_error()
-
-
data -
Arbitrary variable passed to
callback.
Rückgabewerte
eio_sync_file_range() returns request resource on success,Bei einem Fehler wird false zurückgegeben..
