parallel\Channel::__construct

(1.1.0)

parallel\Channel::__construct — Channel Construction

说明

public parallel\Channel::__construct()

Shall make an anonymous unbuffered channel

public parallel\Channel::__construct(int $capacity)

Shall make an anonymous buffered channel with the given capacity

参数

capacity: May be Channel::Infinite or a positive integer

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用户贡献的备注 2 notes

down

abolfazl dot ziaratban at gmail dot com ¶

3 years ago

$capacity is count of stack in buffer.

for example :

<?php
use parallel\{Channel,Runtime};

$test = function($ch){
var_dump($ch->Recv());
var_dump($ch->Recv());
var_dump($ch->Recv());
    echo 'Sleep'.PHP_EOL;
sleep(3);
    echo 'Call Recv()'.PHP_EOL;
var_dump($ch->Recv());
};

$t1 = new Runtime();
$ch = new Channel(3); //buffered channel 
$ch->Send('abc1');
$ch->Send('abc2');
$ch->Send('abc3');
$t1->Run($test,[$ch]);
sleep(1);
echo 'Wait for Recv()...'.PHP_EOL;
$ch->Send('abc4'); #php waits for only one stack of channel to be empty(by Recv() method)
?>

result:
string(4) "abc1"
string(4) "abc2"
string(4) "abc3"
Sleep
Wait for Recv()...
Call Recv()
string(4) "abc4"

down

frame86 at live dot com ¶

4 years ago

Please note $capacity unit is 1 MiB each, not bytes

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备份地址：http://www.lvesu.com/blog/php/parallel-channel.construct.php