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eio_grp_add

(PECL eio >= 0.0.1dev)

eio_grp_add — Adds a request to the request group

说明

eio_grp_add(resource $grp, resource $req): void

eio_grp_add() adds a request to the request group.

参数

grp
The request group resource returned by eio_grp()
req
The request resource

返回值

没有返回值。

示例

示例 #1 Grouping requests

<?php
/*
* Create a group request to open, read and close a file
*/

// Create temporary file and write some bytes to it
$temp_filename = dirname(__FILE__) ."/eio-file.tmp";
$fp = fopen($temp_filename, "w");
fwrite($fp, "some data");
fclose($fp);

/* Is called when the group requests are done */
function my_grp_done($data, $result) {
var_dump($result == 0);
@unlink($data);
}

/* Is called when eio_open() done */
function my_grp_file_opened_callback($data, $result) {
global $grp;

// $result should contain the file descriptor
var_dump($result > 0);

// Create eio_read() request and add it to the group
// Pass file descriptor to the callback
$req = eio_read($result, 4, 0,
EIO_PRI_DEFAULT, "my_grp_file_read_callback", $result);
eio_grp_add($grp, $req);
}

/* Is called when eio_read() done */
function my_grp_file_read_callback($data, $result) {
global $grp;

// Read bytes
var_dump($result);

// Create eio_close() request and add it to the group
// $data should contain the file descriptor
$req = eio_close($data);
eio_grp_add($grp, $req);
}

// Create request group
$grp = eio_grp("my_grp_done", $temp_filename);
var_dump($grp);

// Create eio_open() request and add it to the group
$req = eio_open($temp_filename, EIO_O_RDWR | EIO_O_APPEND , NULL,
EIO_PRI_DEFAULT, "my_grp_file_opened_callback", NULL);
eio_grp_add($grp, $req);

// Process requests
eio_event_loop();
?>

以上示例的输出类似于：

resource(6) of type (EIO Group Descriptor)
bool(true)
string(4) "some"
bool(true)

参见