A. Why want to separate the scanning in YoungGC and MixGC young generation to old s object references?
2. The root region scan stage is stem what of? (don't copy the official document)
3. What object marking? The object? Record object address?
4. The old s region have RSet used in which stage?
Five. Concurrent mark phase confirm most valuable area, but did not mark again, said mark incomplete at this time, how to identify the most valuable areas?

For a moment so much,
Thanks for good brothers, if any,