This article describes the usage of php swoole multi-process/multi-threading. Share it for your reference, as follows:
Swoole's multi-threading is actually multi-process. The overhead of creating too many switching processes is very high. If you can use pthreads, it is recommended to use pthreads, because I am using the php7nts version and cannot use pthreads.
Swoole examples are as follows:
<?php
/**
* Create multi-process
*/
$worker_num = 6; // Default number of processes$workers = []; // Process saving$redirect_stdout = false; // Redirect output; we will see the effect of this parameter usage.for($i = 0; $i < $worker_num; $i++){
$process = new swoole_process('callback_function', $redirect_stdout);
// Enable message queue int $msgkey = 0, int $mode = 2 $process->useQueue(0, 2);
$pid = $process->start();
// Pipeline write content $process->write('index:'.$i);
$process->push('Message Queue Contents of the Process');
// Save the handle of each process $workers[$pid] = $process;
}
/**
* Subprocess callback
* @param swoole_process $worker [description]
* @return [type] [description]
*/
function callback_function(swoole_process $worker)
{
$recv = $worker->pop();
echo "Sub-output main content: {$recv}".PHP_EOL;
//get guandao content
$recv = $worker->read();
$result = doTask();
echo PHP_EOL.$result.'==='.$worker->pid.'==='.$recv;
$worker->exit(0);
}
/**
* Monitor/recycle child processes
*/
while(1){
$ret = swoole_process::wait();
if ($ret){// $ret is an array code is the process exit status code, $pid = $ret['pid'];
echo PHP_EOL."Worker Exit, PID=" . $pid . PHP_EOL;
}else{
break;
}
}
/**
* doTask
* @return [type] [description]
*/
function doTask()
{
sleep(2);
return true;
}
For more information about PHP related content, please check out the topic of this site:Summary of PHP process and thread operation skills》、《Summary of PHP network programming skills》、《Introduction to PHP basic syntax》、《Complete collection of PHP array (Array) operation techniques》、《Summary of usage of php strings》、《PHP+mysql database operation tutorial"and"Summary of common database operation techniques for php》
I hope this article will be helpful to everyone's PHP programming.