eio_cancel

(PECL eio >= 0.0.1dev)

eio_cancel — Cancels a request

설명

void eio_cancel ( resource $req )

eio_cancel() cancels a request specified by req

인수

req

The request resource

pri

The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or NULL. If NULL passed, pri internally is set to EIO_PRI_DEFAULT.

callback

callback function is called when the request is done. It should match the following prototype:


void callback($data, $result);

$data is custom data passed to the request. $result contains request-specific result value; basically, the value returned by corresponding system call.

data

Arbitrary variable passed to callback.

반환값

값을 반환하지 않습니다.

예제

Example #1 eio_cancel() example


<?php
 /* Is called when eio_nop() finished */
 function my_nop_cb($data, $result) {
  echo "my_nop ", $data, "\n";
 }

// This eio_nop() call will be cancelled
$req = eio_nop(EIO_PRI_DEFAULT, "my_nop_cb", "1");
var_dump($req);
eio_cancel($req);

// This time eio_nop() will be processed
eio_nop(EIO_PRI_DEFAULT, "my_nop_cb", "2");

// Process requests
eio_event_loop();
?>

위 예제의 출력 예시:

resource(4) of type (EIO Request Descriptor)
my_nop 2

참고

eio_grp_cancel

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