Title: jruby-gc-stats

Description:

This is a set of GC-monitoring methods for JRuby that mimic behavior of Ruby
Enterprise Edition's GC methods. In our case, these are all implemented in
Ruby, using the JVM's built-in monitoring and management APIs.

Example Usage:

require 'jruby/gc_stats'

require 'pp'
puts "Enabling stats..."
GC.enable_stats
puts "allocation size: #GC.allocation_size"
puts "Running loop..."
1_000.times ary = []
1_000.times {ary << 'foo' + 'bar'
}
puts "collections: #GC.collections"
puts "time: #"bytes since last GC: #{GC.growth"
puts "size change: #GC.allocation_size"
puts "Dumping..."
GC.dump

puts "Dumping caller for all threads..."
2.times {sleep}
pp caller_for_all_threads