eio_readahead

eio_readahead

Perform file readahead into page cache

resource **eio_readahead** mixed $fd int $offset int $length int $pri callable $callback mixed $data

populates the page cache with data from a file so that subsequent reads from that file will not block on disk I/O. See man page for details. eio_readahead``READAHEAD(2)

fdStream, Socket resource, or numeric file descriptor

offsetStarting point from which data is to be read.

lengthNumber of bytes to be read.

pri``callback``data Arbitrary variable passed to . callback

returns request resource on success,return.falseforfailure.

eio_readahead