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https://github.com/Microsoft/napajs
Napa.js: a multi-threaded JavaScript runtime
https://github.com/Microsoft/napajs
javascript multi-core multithreading napajs nodejs parallel runtime
Last synced: 3 months ago
JSON representation
Napa.js: a multi-threaded JavaScript runtime
- Host: GitHub
- URL: https://github.com/Microsoft/napajs
- Owner: microsoft
- License: other
- Archived: true
- Created: 2017-07-18T21:41:10.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2022-08-29T14:03:08.000Z (about 2 years ago)
- Last Synced: 2024-07-31T03:41:05.878Z (3 months ago)
- Topics: javascript, multi-core, multithreading, napajs, nodejs, parallel, runtime
- Language: C++
- Homepage:
- Size: 12.4 MB
- Stars: 9,244
- Watchers: 211
- Forks: 341
- Open Issues: 67
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
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- awesome-npm - napajs - 基于 V8 多线程运行时环境 (6. 其他 / 6.2 并行计算)
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README
[](https://travis-ci.org/Microsoft/napajs)
[](https://ci.appveyor.com/project/napajs/napajs)
[](https://www.npmjs.com/package/napajs)
[](https://www.npmjs.com/package/napajs)
# Napa.js
Napa.js is a multi-threaded JavaScript runtime built on [V8](https://github.com/v8/v8), which was originally designed to develop highly iterative services with non-compromised performance in Bing. As it evolves, we find it useful to complement [Node.js](https://nodejs.org) in CPU-bound tasks, with the capability of executing JavaScript in multiple V8 isolates and communicating between them. Napa.js is exposed as a Node.js module, while it can also be embedded in a host process without Node.js dependency.
## Installation
Install the latest stable version:
```
npm install napajs
```
Other options can be found in [Build Napa.js](https://github.com/Microsoft/napajs/wiki/build-napa.js).
## Quick Start
```js
const napa = require('napajs');
const zone1 = napa.zone.create('zone1', { workers: 4 });
// Broadcast code to all 4 workers in 'zone1'.
zone1.broadcast('console.log("hello world");');
// Execute an anonymous function in any worker thread in 'zone1'.
zone1.execute(
(text) => text,
['hello napa'])
.then((result) => {
console.log(result.value);
});
```
More examples:
* [Estimate PI in parallel](./examples/tutorial/estimate-pi-in-parallel)
* [Max sub-matrix of 1s with layered parallelism](./examples/tutorial/max-square-sub-matrix)
* [Parallel Quick Sort](./examples/tutorial/parallel-quick-sort)
* [Recursive Fibonacci with multiple JavaScript threads](./examples/tutorial/recursive-fibonacci)
* [Synchronized loading](./examples/tutorial/synchronized-loading)
## Features
- Multi-threaded JavaScript runtime.
- Node.js compatible module architecture with NPM support.
- API for object transportation, object sharing and synchronization across JavaScript threads.
- API for pluggable logging, metric and memory allocator.
- Distributed as a Node.js module, as well as supporting embed scenarios.
## Documentation
- [Napa.js Home](https://github.com/Microsoft/napajs/wiki)
- [API Reference](./docs/api/index.md)
- [FAQ](https://github.com/Microsoft/napajs/wiki/FAQ)
# Contribute
You can contribute to Napa.js in following ways:
* [Report issues](https://github.com/Microsoft/napajs/issues) and help us verify fixes as they are checked in.
* Review the [source code changes](https://github.com/Microsoft/napajs/pulls).
* Contribute to core module compatibility with Node.
* Contribute bug fixes.
This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [email protected] with any additional questions or comments.
# License
Copyright (c) Microsoft Corporation. All rights reserved.
Licensed under the [MIT](https://github.com/Microsoft/napajs/blob/master/LICENSE.txt) License.