mruby/mruby — pull request #1449 by Fleurer (2013-08-09 07:08:16+00:00)
Title: add comments for major GC

it seems that the designed behavior of mruby's major GC in generational mode is triggered incrementally like a regular tri-color GC cycle.

so we can conclude that it's necessary to finish the half baked GC in advance in `clear_all_old()` if it's a major GC.