learn-js-engine

记录自己学习JavaScript引擎的一些知识总结

主要是关于v8的内容，后续可能会涉及到v8和其他引擎之间的对比

获取v8源码&编译

按照v8官方文档的步骤即可

遇到的问题

1. 运行gclient sync时遇到下面的错误：

NOTICE: You have PROXY values set in your environment, but gsutil in depot_tools does not (yet) obey them. Also, --no_auth prevents the normal BOTO_CONFIG environment variable from being used. To use a proxy in this situation, please supply those settings in a .boto file pointed to by the NO_AUTH_BOTO_CONFIG environment var.

这是因为gclient工具不识别环境变量设置的代理，所以按照提示配置.boto文件即可。 参照这里

编译

1. 进入v8源码目录

cd /path/to/v8

2. 更新代码与依赖

git pull && gclient sync

3. 编译

tools/dev/gm.py x64.debug

查看编译工具gm.py的更多介绍

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个人总结

1. Config d8 tools for debug javascript code
2. JavaScript engine fundamentals: Shapes and Inline Caches(翻译)