class RSpec::Memory::Trace
Attributes
allocated[R]
ignored[R]
retained[R]
total[R]
Public Class Methods
capture(*args, &block)
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# File lib/rspec/memory/trace.rb, line 49 def self.capture(*args, &block) self.new(*args).tap do |trace| trace.capture(&block) end end
new(klasses)
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# File lib/rspec/memory/trace.rb, line 62 def initialize(klasses) @klasses = klasses @allocated = Allocation.default_hash @retained = Allocation.default_hash @ignored = Allocation.default_hash @total = Allocation.new(0, 0) end
supported?()
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# File lib/rspec/memory/trace.rb, line 41 def self.supported? # There are issues on truffleruby-1.0.0rc9 return false if RUBY_ENGINE == "truffleruby" ObjectSpace.respond_to?(:trace_object_allocations) end
Public Instance Methods
capture(&block)
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# File lib/rspec/memory/trace.rb, line 96 def capture(&block) GC.start begin GC.disable generation = GC.count ObjectSpace.trace_object_allocations(&block) allocated = current_objects(generation) ensure GC.enable end GC.start retained = current_objects(generation) # All allocated objects, including those freed in the last GC: allocated.each do |object| if klass = find_base(object) @allocated[klass] << object else # If the user specified classes, but we can't pin this allocation to a specific class, we issue a warning. if @klasses.any? warn "Ignoring allocation of #{object.class} at #{ObjectSpace.allocation_sourcefile(object)}:#{ObjectSpace.allocation_sourceline(object)}" end @ignored[object.class] << object end @total << object end # Retained objects are still alive after a final GC: retained.each do |object| if klass = find_base(object) @retained[klass] << object end end end
current_objects(generation)
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# File lib/rspec/memory/trace.rb, line 80 def current_objects(generation) allocations = [] ObjectSpace.each_object do |object| if ObjectSpace.allocation_generation(object) == generation allocations << object end end return allocations end
find_base(object)
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# File lib/rspec/memory/trace.rb, line 92 def find_base(object) @klasses.find{|klass| object.is_a? klass} end