目前主要看的是GC相关的一块，以及从GC引申出去的一些方法。
GC相关的目录：src/share/vm/gc_implementation 和src/share/vm/gc_interface。后者主要是定义了接口，前者里面有各种具体实现。
笔记1:http://blog.csdn.net/foolishandstupid/article/details/77430875
笔记2:http://blog.csdn.net/foolishandstupid/article/details/77596050
笔记3:http://blog.csdn.net/FoolishAndStupid/article/details/77822827
笔记4:http://blog.csdn.net/foolishandstupid/article/details/77826099
笔记5:http://blog.csdn.net/foolishandstupid/article/details/77915227
笔记6:http://blog.csdn.net/foolishandstupid/article/details/78067913
笔记7:http://blog.csdn.net/foolishandstupid/article/details/78078238