(PECL eio >= 0.0.1dev)
eio_busy — Artificially increase load. Could be useful in tests, benchmarking
$delay
[, int $pri
= EIO_PRI_DEFAULT
[, callable $callback
= NULL
[, mixed $data
= NULL
]]] ) : resource
eio_busy() artificially increases load taking
delay
seconds to execute. May be used for debugging,
or benchmarking.
delay
Delay in seconds
pri
请求的优先级:EIO_PRI_DEFAULT
,EIO_PRI_MIN
,EIO_PRI_MAX
或 NULL
。如果是
NULL
,pri
将设为
EIO_PRI_DEFAULT
。
callback
This callback is called when all the group requests are done.
data
Arbitrary variable passed to callback
.
eio_busy() returns request resource on success or FALSE
on error.