module MemoryLeakFinder

# File lib/memory_leak_finder.rb, line 4
def self.trace
  raise "Block required" unless block_given?

  gc_params = {full_mark: true, immediate_sweep: true}.freeze

  ObjectSpace.trace_object_allocations_clear
  ObjectSpace.trace_object_allocations do
    yield
  end

  GC.start(gc_params)

  leaks = false
  ObjectSpace.each_object do |o|
    next unless ObjectSpace.allocation_sourcefile(o)
    leaks = true
    puts "LEAK! #{o.class} #{o.inspect} allocated at #{ObjectSpace.allocation_sourcefile(o)}:#{ObjectSpace.allocation_sourceline(o)}: approx. #{ObjectSpace.memsize_of(o)} bytes"
  end
  leaks
end