krakjoe

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

/* usage php crawler.php [http://example.com] [workers=8] [limit=500] */

$page    = $argv[1] ?: "https://blog.krakjoe.ninja"; # start crawling this page
$workers = $argv[2] ?: 8;                            # start this number of threads
$limit   = $argv[3] ?: 500;                          # stop at this number of unique pages
$timeout = $argv[4] ?: 3;                            # socket timeout for producers

krakjoe

Multi-Threading in PHP with pthreads

A Brief Introduction to Multi-Threading in PHP

• Foreword
• Execution
• Sharing
• Synchronization
• Pitfalls

krakjoe

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

class ExecutorService {

    public function __construct(int $workers, string $channel = __CLASS__, int $backlog = Channel::Infinite) {
        if ($backlog == 0) {
            /*
            * execute() will block until a worker is ready
            */

krakjoe

<?php
/*
 usage: php document.php --ext name [--output document.txt]
*/
function prototype(Reflector $reflector) {
	$elements = [];

	switch (get_class($reflector)) {
		case "ReflectionClass":
			if ($reflector->isFinal()) {

krakjoe

--- pcov.log	2019-01-20 14:28:58.444851609 +0100
+++ xdebug.log	2019-01-20 14:25:27.607884120 +0100
@@ -1,8 +1,8 @@
-time php vendor/bin/phpunit --coverage-text --colors=never 2>&1 > pcov.log
+time php vendor/bin/phpunit --coverage-text --colors=never 2>&1 >xdebug.log
 
 PHPUnit 7.5.2 by Sebastian Bergmann and contributors.
 
-Runtime:       PHP 7.2.15-dev
+Runtime:       PHP 7.2.15-dev with Xdebug 2.7.0beta2-dev

krakjoe

string(12) "Oh Exception"
Finally Foo::bar
Finally Foo::qux

Fatal error: Uncaught RuntimeException: Oh qux! in /opt/src/php-src/try-finally-auto.php:22
Stack trace:
#0 /opt/src/php-src/try-finally-auto.php(30): Foo->qux()
#1 {main}
  thrown in /opt/src/php-src/try-finally-auto.php on line 22

krakjoe

diff --git a/config.m4 b/config.m4
index 90bbe66..e3ffe7c 100644
--- a/config.m4
+++ b/config.m4
@@ -1,47 +1,10 @@
 dnl $Id$
 dnl config.m4 for extension xz
 
-dnl Comments in this file start with the string 'dnl'.
-dnl Remove where necessary. This file will not work

krakjoe

Arrayof Performance

<?php
function arrayof_foo(Foo[] $fooze) {
    foreach ($fooze as $foo) {
    	$foo->bar();
    }
}

krakjoe

This extension wraps the very excellent libui to provide PHP 7 with an API for the creation of cross platform native look-and-feel interfaces.

TODO

• queue for pthreads

krakjoe

Easy pthreads Pools

The final solution !!

Since the first version of pthreads, PHP has had the ability to initialize Worker threads for users. Onto those Worker threads are stacked objects of class Stackable for execution concurrently.

The objects stacked onto workers do not have their reference counts changed, pthreads forces the user to maintain the reference counts in userland, for the extremely good reason that this enables the programmer to keep control of memory usage; and so, execute indefinitely.

This is the cause of much heartache for newcomers to pthreads; if you do not maintain references properly you will, definitely, experience segmentation faults.