mirror of
https://github.com/danog/parallel.git
synced 2024-11-26 20:34:40 +01:00
87 lines
3.6 KiB
Markdown
87 lines
3.6 KiB
Markdown
<p align="center">
|
|
<a href="https://amphp.org/parallel"><img src="https://raw.githubusercontent.com/amphp/logo/master/repos/parallel.png?v=12-07-2017" alt="parallel"/></a>
|
|
</p>
|
|
|
|
<p align="center">
|
|
<a href="https://travis-ci.org/amphp/parallel"><img src="https://img.shields.io/travis/amphp/parallel/master.svg?style=flat-square" alt="Build Status"/></a>
|
|
<a href="https://coveralls.io/github/amphp/parallel?branch=master"><img src="https://img.shields.io/coveralls/amphp/parallel/master.svg?style=flat-square" alt="Code Coverage"/></a>
|
|
<a href="https://github.com/amphp/parallel/releases"><img src="https://img.shields.io/github/release/amphp/parallel.svg?style=flat-square" alt="Release"/></a>
|
|
<a href="https://github.com/amphp/parallel/blob/master/LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square" alt="License"/></a>
|
|
</p>
|
|
|
|
`amphp/parallel` provides *true parallel processing* for PHP using multiple processes or native threads, *without blocking and no extensions required*.
|
|
|
|
To be as flexible as possible, this library comes with a collection of non-blocking concurrency tools that can be used independently as needed, as well as an "opinionated" worker API that allows you to assign units of work to a pool of worker threads or processes.
|
|
|
|
## Installation
|
|
|
|
This package can be installed as a [Composer](https://getcomposer.org/) dependency.
|
|
|
|
```bash
|
|
composer require amphp/parallel
|
|
```
|
|
|
|
## Usage
|
|
|
|
The basic usage of this library is to submit blocking tasks to be executed by a worker pool in order to avoid blocking the main event loop.
|
|
|
|
```php
|
|
<?php
|
|
|
|
require __DIR__ . '/../vendor/autoload.php';
|
|
|
|
use Amp\Parallel\Worker;
|
|
use Amp\Promise;
|
|
|
|
$urls = [
|
|
'https://secure.php.net',
|
|
'https://amphp.org',
|
|
'https://github.com',
|
|
];
|
|
|
|
$promises = [];
|
|
foreach ($urls as $url) {
|
|
$promises[$url] = Worker\enqueueCallable('file_get_contents', $url);
|
|
}
|
|
|
|
$responses = Promise\wait(Promise\all($promises));
|
|
|
|
foreach ($responses as $url => $response) {
|
|
\printf("Read %d bytes from %s\n", \strlen($response), $url);
|
|
}
|
|
```
|
|
|
|
[`file_get_contents`](https://secure.php.net/file_get_contents) is just used as an example for a blocking function here.
|
|
If you just want to fetch multiple HTTP resources concurrently, it's better to use [Artax](https://amphp.org/artax/), our non-blocking HTTP client.
|
|
|
|
The functions you call must be predefined or autoloadable by Composer so they also exist in the worker processes.
|
|
Instead of simple callables, you can also enqueue `Task` instances with `Amp\Parallel\Worker\enqueue()`.
|
|
|
|
## Documentation
|
|
|
|
Documentation can be found on [amphp.org/parallel](https://amphp.org/parallel/) as well as in the [`./docs`](./docs) directory.
|
|
|
|
## Versioning
|
|
|
|
`amphp/parallel` follows the [semver](http://semver.org/) semantic versioning specification like all other `amphp` packages.
|
|
|
|
## Security
|
|
|
|
If you discover any security related issues, please email [`me@kelunik.com`](mailto:me@kelunik.com) instead of using the issue tracker.
|
|
|
|
## License
|
|
|
|
The MIT License (MIT). Please see [`LICENSE`](./LICENSE) for more information.
|
|
|
|
## Development and Contributing
|
|
|
|
Want to hack on the source? A [Vagrant](http://vagrantup.com) box is provided with the repository to give a common development environment for running concurrent threads and processes, and comes with a bunch of handy tools and scripts for testing and experimentation.
|
|
|
|
Starting up and logging into the virtual machine is as simple as
|
|
|
|
```bash
|
|
vagrant up && vagrant ssh
|
|
```
|
|
|
|
Once inside the VM, you can install PHP extensions with [Pickle](https://github.com/FriendsOfPHP/pickle), switch versions with `newphp VERSION`, and test for memory leaks with [Valgrind](http://valgrind.org).
|