gc profiler/logger and oobgc for rgengc in ruby 2.1
built on new apis and events offered in ruby 2.1:
- rb_gc_stat()
- rb_gc_latest_gc_info()
- RUBY_INTERNAL_EVENT_GC_START
- RUBY_INTERNAL_EVENT_GC_END_MARK
- RUBY_INTERNAL_EVENT_GC_END_SWEEP
require 'gctools/logger'require 'gctools/oobgc'
GC::OOB.run # after every request
use(GC::OOB::UnicornMiddleware) # in config.ru for unicorn