End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

GC.latest_gc_info

GC.latest_gc_info → {:gc_by=>:newobj}

GC.latest_gc_info(hash) → hash

GC.latest_gc_info(:major_by) → :malloc

# File tmp/rubies/ruby-3.0.5/gc.rb, line 183
def self.latest_gc_info hash_or_key = nil
  Primitive.gc_latest_gc_info hash_or_key
end

Returns information about the most recent garbage collection.

If the optional argument, hash, is given, it is overwritten and returned. This is intended to avoid probe effect.

See also .latest_compact_info .malloc_allocated_size .enable .malloc_allocations also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1