mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
663 lines
21 KiB
Ruby
663 lines
21 KiB
Ruby
# frozen_string_literal: false
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require "test/unit"
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require "objspace"
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begin
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require "json"
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rescue LoadError
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end
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class TestObjSpace < Test::Unit::TestCase
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def test_memsize_of
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assert_equal(0, ObjectSpace.memsize_of(true))
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assert_equal(0, ObjectSpace.memsize_of(nil))
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assert_equal(0, ObjectSpace.memsize_of(1))
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assert_kind_of(Integer, ObjectSpace.memsize_of(Object.new))
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assert_kind_of(Integer, ObjectSpace.memsize_of(Class))
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assert_kind_of(Integer, ObjectSpace.memsize_of(""))
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assert_kind_of(Integer, ObjectSpace.memsize_of([]))
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assert_kind_of(Integer, ObjectSpace.memsize_of({}))
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assert_kind_of(Integer, ObjectSpace.memsize_of(//))
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f = File.new(__FILE__)
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assert_kind_of(Integer, ObjectSpace.memsize_of(f))
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f.close
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assert_kind_of(Integer, ObjectSpace.memsize_of(/a/.match("a")))
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assert_kind_of(Integer, ObjectSpace.memsize_of(Struct.new(:a)))
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assert_operator(ObjectSpace.memsize_of(Regexp.new("(a)"*1000).match("a"*1000)),
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:>,
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ObjectSpace.memsize_of(//.match("")))
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end
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def test_memsize_of_root_shared_string
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a = "a" * GC::INTERNAL_CONSTANTS[:RVARGC_MAX_ALLOCATE_SIZE]
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b = a.dup
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c = nil
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ObjectSpace.each_object(String) {|x| break c = x if x == a and x.frozen?}
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rv_size = GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE]
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assert_equal([rv_size, rv_size, a.length + 1 + rv_size], [a, b, c].map {|x| ObjectSpace.memsize_of(x)})
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end
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def test_argf_memsize
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size = ObjectSpace.memsize_of(ARGF)
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assert_kind_of(Integer, size)
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assert_operator(size, :>, 0)
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argf = ARGF.dup
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argf.inplace_mode = nil
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size = ObjectSpace.memsize_of(argf)
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argf.inplace_mode = "inplace_mode_suffix"
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assert_equal(size, ObjectSpace.memsize_of(argf))
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end
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def test_memsize_of_all
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assert_kind_of(Integer, a = ObjectSpace.memsize_of_all)
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assert_kind_of(Integer, b = ObjectSpace.memsize_of_all(String))
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assert_operator(a, :>, b)
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assert_operator(a, :>, 0)
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assert_operator(b, :>, 0)
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assert_raise(TypeError) {ObjectSpace.memsize_of_all('error')}
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end
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def test_count_objects_size
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res = ObjectSpace.count_objects_size
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assert_not_empty(res)
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assert_operator(res[:TOTAL], :>, 0)
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end
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def test_count_objects_size_with_hash
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arg = {}
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ObjectSpace.count_objects_size(arg)
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assert_not_empty(arg)
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arg = {:TOTAL => 1 }
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ObjectSpace.count_objects_size(arg)
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assert_not_empty(arg)
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end
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def test_count_objects_size_with_wrong_type
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assert_raise(TypeError) { ObjectSpace.count_objects_size(0) }
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end
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def test_count_nodes
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res = ObjectSpace.count_nodes
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assert_not_empty(res)
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arg = {}
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ObjectSpace.count_nodes(arg)
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assert_not_empty(arg)
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bug8014 = '[ruby-core:53130] [Bug #8014]'
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assert_empty(arg.select {|k, v| !(Symbol === k && Integer === v)}, bug8014)
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end if false
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def test_count_tdata_objects
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res = ObjectSpace.count_tdata_objects
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assert_not_empty(res)
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arg = {}
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ObjectSpace.count_tdata_objects(arg)
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assert_not_empty(arg)
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end
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def test_count_imemo_objects
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res = ObjectSpace.count_imemo_objects
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assert_not_empty(res)
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assert_not_nil(res[:imemo_cref])
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assert_not_empty res.inspect
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arg = {}
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res = ObjectSpace.count_imemo_objects(arg)
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assert_not_empty(res)
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end
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def test_memsize_of_iseq
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iseqw = RubyVM::InstructionSequence.compile('def a; a = :b; a; end')
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# Use anonymous class as a basic object size because size of Object.new can be increased
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base_obj_size = ObjectSpace.memsize_of(Class.new.new)
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assert_operator(ObjectSpace.memsize_of(iseqw), :>, base_obj_size)
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end
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def test_reachable_objects_from
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opts = %w[--disable-gem --disable=frozen-string-literal -robjspace]
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assert_separately opts, "#{<<-"begin;"}\n#{<<-'end;'}"
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begin;
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assert_equal(nil, ObjectSpace.reachable_objects_from(nil))
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assert_equal([Array, 'a', 'b', 'c'], ObjectSpace.reachable_objects_from(['a', 'b', 'c']))
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assert_equal([Array, 'a', 'a', 'a'], ObjectSpace.reachable_objects_from(['a', 'a', 'a']))
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assert_equal([Array, 'a', 'a'], ObjectSpace.reachable_objects_from(['a', v = 'a', v]))
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assert_equal([Array, 'a'], ObjectSpace.reachable_objects_from([v = 'a', v, v]))
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long_ary = Array.new(1_000){''}
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max = 0
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ObjectSpace.each_object{|o|
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refs = ObjectSpace.reachable_objects_from(o)
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max = [refs.size, max].max
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unless refs.nil?
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refs.each_with_index {|ro, i|
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assert_not_nil(ro, "#{i}: this referenced object is internal object")
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}
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end
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}
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assert_operator(max, :>=, long_ary.size+1, "1000 elems + Array class")
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end;
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end
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def test_reachable_objects_from_root
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root_objects = ObjectSpace.reachable_objects_from_root
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assert_operator(root_objects.size, :>, 0)
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root_objects.each{|category, objects|
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assert_kind_of(String, category)
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assert_kind_of(Array, objects)
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assert_operator(objects.size, :>, 0)
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}
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end
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def test_reachable_objects_size
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assert_separately %w[--disable-gem -robjspace], "#{<<~"begin;"}\n#{<<~'end;'}"
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begin;
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ObjectSpace.each_object{|o|
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ObjectSpace.reachable_objects_from(o).each{|reached_obj|
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size = ObjectSpace.memsize_of(reached_obj)
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assert_kind_of(Integer, size)
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assert_operator(size, :>=, 0)
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}
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}
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end;
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end
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def test_trace_object_allocations_stop_first
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assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
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begin;
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require "objspace"
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# Make sure stopping before the tracepoints are initialized doesn't raise. See [Bug #17020]
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ObjectSpace.trace_object_allocations_stop
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end;
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end
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def test_trace_object_allocations
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ObjectSpace.trace_object_allocations_clear # clear object_table to get rid of erroneous detection for c0
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Class.name
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o0 = Object.new
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ObjectSpace.trace_object_allocations{
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o1 = Object.new; line1 = __LINE__; c1 = GC.count
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o2 = "xyzzy" ; line2 = __LINE__; c2 = GC.count
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o3 = [1, 2] ; line3 = __LINE__; c3 = GC.count
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assert_equal(nil, ObjectSpace.allocation_sourcefile(o0))
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assert_equal(nil, ObjectSpace.allocation_sourceline(o0))
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assert_equal(nil, ObjectSpace.allocation_generation(o0))
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assert_equal(line1, ObjectSpace.allocation_sourceline(o1))
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assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(o1))
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assert_equal(c1, ObjectSpace.allocation_generation(o1))
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assert_equal(Class.name, ObjectSpace.allocation_class_path(o1))
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assert_equal(:new, ObjectSpace.allocation_method_id(o1))
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assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(o2))
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assert_equal(line2, ObjectSpace.allocation_sourceline(o2))
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assert_equal(c2, ObjectSpace.allocation_generation(o2))
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assert_equal(self.class.name, ObjectSpace.allocation_class_path(o2))
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assert_equal(__method__, ObjectSpace.allocation_method_id(o2))
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assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(o3))
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assert_equal(line3, ObjectSpace.allocation_sourceline(o3))
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assert_equal(c3, ObjectSpace.allocation_generation(o3))
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assert_equal(self.class.name, ObjectSpace.allocation_class_path(o3))
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assert_equal(__method__, ObjectSpace.allocation_method_id(o3))
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}
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end
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def test_trace_object_allocations_start_stop_clear
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ObjectSpace.trace_object_allocations_clear # clear object_table to get rid of erroneous detection for obj3
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GC.disable # suppress potential object reuse. see [Bug #11271]
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begin
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ObjectSpace.trace_object_allocations_start
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begin
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ObjectSpace.trace_object_allocations_start
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begin
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ObjectSpace.trace_object_allocations_start
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obj0 = Object.new
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ensure
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ObjectSpace.trace_object_allocations_stop
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obj1 = Object.new
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end
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ensure
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ObjectSpace.trace_object_allocations_stop
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obj2 = Object.new
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end
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ensure
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ObjectSpace.trace_object_allocations_stop
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obj3 = Object.new
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end
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assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(obj0))
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assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(obj1))
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assert_equal(__FILE__, ObjectSpace.allocation_sourcefile(obj2))
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assert_equal(nil , ObjectSpace.allocation_sourcefile(obj3)) # after tracing
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ObjectSpace.trace_object_allocations_clear
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assert_equal(nil, ObjectSpace.allocation_sourcefile(obj0))
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assert_equal(nil, ObjectSpace.allocation_sourcefile(obj1))
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assert_equal(nil, ObjectSpace.allocation_sourcefile(obj2))
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assert_equal(nil, ObjectSpace.allocation_sourcefile(obj3))
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ensure
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GC.enable
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end
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def test_trace_object_allocations_gc_stress
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EnvUtil.under_gc_stress do
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ObjectSpace.trace_object_allocations{
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proc{}
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}
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end
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assert true # success
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end
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def test_dump_flags
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info = ObjectSpace.dump("foo".freeze)
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assert_match(/"wb_protected":true, "old":true/, info)
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assert_match(/"fstring":true/, info)
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JSON.parse(info) if defined?(JSON)
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end
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def test_dump_to_default
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line = nil
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info = nil
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ObjectSpace.trace_object_allocations do
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line = __LINE__ + 1
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str = "hello world"
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info = ObjectSpace.dump(str)
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end
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assert_dump_object(info, line)
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end
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def test_dump_to_io
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line = nil
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info = IO.pipe do |r, w|
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th = Thread.start {r.read}
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ObjectSpace.trace_object_allocations do
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line = __LINE__ + 1
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str = "hello world"
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ObjectSpace.dump(str, output: w)
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end
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w.close
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th.value
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end
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assert_dump_object(info, line)
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end
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def assert_dump_object(info, line)
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loc = caller_locations(1, 1)[0]
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assert_match(/"type":"STRING"/, info)
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assert_match(/"embedded":true, "bytesize":11, "value":"hello world", "encoding":"UTF-8"/, info)
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assert_match(/"file":"#{Regexp.escape __FILE__}", "line":#{line}/, info)
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assert_match(/"method":"#{loc.base_label}"/, info)
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JSON.parse(info) if defined?(JSON)
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end
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def test_dump_control_char
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assert_include(ObjectSpace.dump("\x0f"), '"value":"\u000f"')
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assert_include(ObjectSpace.dump("\C-?"), '"value":"\u007f"')
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end
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def test_dump_special_consts
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# [ruby-core:69692] [Bug #11291]
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assert_equal('null', ObjectSpace.dump(nil))
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assert_equal('true', ObjectSpace.dump(true))
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assert_equal('false', ObjectSpace.dump(false))
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assert_equal('0', ObjectSpace.dump(0))
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assert_equal('{"type":"SYMBOL", "value":"foo"}', ObjectSpace.dump(:foo))
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end
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def test_dump_singleton_class
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assert_include(ObjectSpace.dump(Object), '"name":"Object"')
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assert_include(ObjectSpace.dump(Kernel), '"name":"Kernel"')
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assert_include(ObjectSpace.dump(Object.new.singleton_class), '"real_class_name":"Object"')
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singleton = Object.new.singleton_class
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singleton_dump = ObjectSpace.dump(singleton)
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assert_include(singleton_dump, '"singleton":true')
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if defined?(JSON)
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assert_equal(Object, singleton.superclass)
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superclass_address = JSON.parse(ObjectSpace.dump(Object)).fetch('address')
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assert_equal(superclass_address, JSON.parse(singleton_dump).fetch('superclass'))
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end
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end
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def test_dump_special_floats
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assert_match(/"value":"NaN"/, ObjectSpace.dump(Float::NAN))
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assert_match(/"value":"Inf"/, ObjectSpace.dump(Float::INFINITY))
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assert_match(/"value":"\-Inf"/, ObjectSpace.dump(-Float::INFINITY))
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end
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def test_dump_dynamic_symbol
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dump = ObjectSpace.dump(("foobar%x" % rand(0x10000)).to_sym)
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assert_match(/"type":"SYMBOL"/, dump)
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assert_match(/"value":"foobar\h+"/, dump)
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end
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def test_dump_includes_imemo_type
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assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}\n#{<<-'end;'}") do |output, error|
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begin;
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def dump_my_heap_please
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ObjectSpace.dump_all(output: :stdout)
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end
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p dump_my_heap_please
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end;
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assert_equal 'nil', output.pop
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heap = output.find_all { |l|
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obj = JSON.parse(l)
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obj['type'] == "IMEMO" && obj['imemo_type']
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}
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assert_operator heap.length, :>, 0
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end
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end
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def test_dump_all_full
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assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}\n#{<<-'end;'}") do |output, error|
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begin;
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def dump_my_heap_please
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ObjectSpace.dump_all(output: :stdout, full: true)
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end
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p dump_my_heap_please
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end;
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assert_equal 'nil', output.pop
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heap = output.find_all { |l| JSON.parse(l)['type'] == "NONE" }
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assert_operator heap.length, :>, 0
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end
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end
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def test_dump_all_single_generation
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assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}\n#{<<-'end;'}") do |output, error|
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begin;
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def dump_my_heap_please
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GC.start
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ObjectSpace.trace_object_allocations_start
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gc_gen = GC.count
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puts gc_gen
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@obj1 = Object.new
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GC.start
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@obj2 = Object.new
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ObjectSpace.dump_all(output: :stdout, since: gc_gen)
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end
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p dump_my_heap_please
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end;
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assert_equal 'nil', output.pop
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since = output.shift.to_i
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assert_operator output.size, :>, 0
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generations = output.map { |l| JSON.parse(l)["generation"] }.uniq.sort
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assert_equal [since, since + 1], generations
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end
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end
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def test_dump_addresses_match_dump_all_addresses
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assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}\n#{<<-'end;'}") do |output, error|
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begin;
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def dump_my_heap_please
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obj = Object.new
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puts ObjectSpace.dump(obj)
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ObjectSpace.dump_all(output: $stdout)
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end
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p $stdout == dump_my_heap_please
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end;
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assert_equal 'true', output.pop
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needle = JSON.parse(output.first)
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addr = needle['address']
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found = output.drop(1).find { |l| JSON.parse(l)['address'] == addr }
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assert found, "object #{addr} should be findable in full heap dump"
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end
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end
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def test_dump_class_addresses_match_dump_all_addresses
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assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}\n#{<<-'end;'}") do |output, error|
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begin;
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def dump_my_heap_please
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obj = Object.new
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puts ObjectSpace.dump(obj)
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ObjectSpace.dump_all(output: $stdout)
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end
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p $stdout == dump_my_heap_please
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end;
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assert_equal 'true', output.pop
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needle = JSON.parse(output.first)
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addr = needle['class']
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found = output.drop(1).find { |l| JSON.parse(l)['address'] == addr }
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assert found, "object #{addr} should be findable in full heap dump"
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end
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end
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def test_dump_objects_dumps_page_slot_sizes
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assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}\n#{<<-'end;'}") do |output, error|
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begin;
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def dump_my_heap_please
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ObjectSpace.dump_all(output: $stdout)
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end
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p $stdout == dump_my_heap_please
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end;
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assert_equal 'true', output.pop
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assert(output.count > 1)
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output.each { |l|
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obj = JSON.parse(l)
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next if obj["type"] == "ROOT"
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assert(obj["slot_size"] != nil)
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assert(obj["slot_size"] % GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE] == 0)
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}
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end
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end
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def test_dump_escapes_method_name
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method_name = "foo\"bar"
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klass = Class.new do
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define_method(method_name) { "TEST STRING" }
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end
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ObjectSpace.trace_object_allocations_start
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obj = klass.new.send(method_name)
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dump = ObjectSpace.dump(obj)
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assert_includes dump, '"method":"foo\"bar"'
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parsed = JSON.parse(dump)
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assert_equal "foo\"bar", parsed["method"]
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ensure
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ObjectSpace.trace_object_allocations_stop
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end
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def test_dump_includes_slot_size
|
|
str = "TEST"
|
|
dump = ObjectSpace.dump(str)
|
|
|
|
assert_includes dump, "\"slot_size\":#{GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE]}"
|
|
end
|
|
|
|
def test_dump_reference_addresses_match_dump_all_addresses
|
|
assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}\n#{<<-'end;'}") do |output, error|
|
|
begin;
|
|
def dump_my_heap_please
|
|
obj = Object.new
|
|
obj2 = Object.new
|
|
obj2.instance_variable_set(:@ref, obj)
|
|
puts ObjectSpace.dump(obj)
|
|
ObjectSpace.dump_all(output: $stdout)
|
|
end
|
|
|
|
p $stdout == dump_my_heap_please
|
|
end;
|
|
assert_equal 'true', output.pop
|
|
needle = JSON.parse(output.first)
|
|
addr = needle['address']
|
|
found = output.drop(1).find { |l| (JSON.parse(l)['references'] || []).include? addr }
|
|
assert found, "object #{addr} should be findable in full heap dump"
|
|
end
|
|
end
|
|
|
|
def test_dump_all
|
|
entry = /"bytesize":11, "value":"TEST STRING", "encoding":"UTF-8", "file":"-", "line":4, "method":"dump_my_heap_please", "generation":/
|
|
opts = %w[--disable-gem --disable=frozen-string-literal -robjspace]
|
|
|
|
assert_in_out_err(opts, "#{<<-"begin;"}#{<<-'end;'}") do |output, error|
|
|
begin;
|
|
def dump_my_heap_please
|
|
ObjectSpace.trace_object_allocations_start
|
|
GC.start
|
|
str = "TEST STRING".force_encoding("UTF-8")
|
|
ObjectSpace.dump_all(output: :stdout)
|
|
end
|
|
|
|
p dump_my_heap_please
|
|
end;
|
|
assert_equal 'nil', output.pop
|
|
assert_match(entry, output.grep(/TEST STRING/).join("\n"))
|
|
end
|
|
|
|
assert_in_out_err(%w[-robjspace], "#{<<-"begin;"}#{<<-'end;'}") do |(output), (error)|
|
|
begin;
|
|
def dump_my_heap_please
|
|
ObjectSpace.trace_object_allocations_start
|
|
GC.start
|
|
(str = "TEST STRING").force_encoding("UTF-8")
|
|
ObjectSpace.dump_all().path
|
|
end
|
|
|
|
puts dump_my_heap_please
|
|
end;
|
|
assert_nil(error)
|
|
dump = File.readlines(output)
|
|
File.unlink(output)
|
|
assert_match(entry, dump.grep(/TEST STRING/).join("\n"))
|
|
end
|
|
|
|
if defined?(JSON)
|
|
args = [
|
|
"-rjson", "-",
|
|
EnvUtil.rubybin,
|
|
"--disable=gems", "-robjspace", "-eObjectSpace.dump_all(output: :stdout)",
|
|
]
|
|
assert_ruby_status(args, "#{<<~"begin;"}\n#{<<~"end;"}")
|
|
begin;
|
|
IO.popen(ARGV) do |f|
|
|
f.each_line.map { |x| JSON.load(x) }
|
|
end
|
|
end;
|
|
end
|
|
end
|
|
|
|
def test_dump_uninitialized_file
|
|
assert_in_out_err(%[-robjspace], <<-RUBY) do |(output), (error)|
|
|
puts ObjectSpace.dump(File.allocate)
|
|
RUBY
|
|
assert_nil error
|
|
assert_match(/"type":"FILE"/, output)
|
|
assert_not_match(/"fd":/, output)
|
|
end
|
|
end
|
|
|
|
def traverse_classes klass
|
|
h = {}
|
|
while klass && !h.has_key?(klass)
|
|
h[klass] = true
|
|
klass = ObjectSpace.internal_class_of(klass)
|
|
end
|
|
end
|
|
|
|
def test_internal_class_of
|
|
i = 0
|
|
ObjectSpace.each_object{|o|
|
|
traverse_classes ObjectSpace.internal_class_of(o)
|
|
i += 1
|
|
}
|
|
assert_operator i, :>, 0
|
|
end
|
|
|
|
def test_internal_class_of_on_ast
|
|
children = ObjectSpace.reachable_objects_from(RubyVM::AbstractSyntaxTree.parse("kadomatsu"))
|
|
children.each {|child| ObjectSpace.internal_class_of(child).itself} # this used to crash
|
|
end
|
|
|
|
def test_name_error_message
|
|
begin
|
|
bar
|
|
rescue => err
|
|
_, m = ObjectSpace.reachable_objects_from(err)
|
|
end
|
|
assert_equal(m, m.clone)
|
|
end
|
|
|
|
def traverse_super_classes klass
|
|
while klass
|
|
klass = ObjectSpace.internal_super_of(klass)
|
|
end
|
|
end
|
|
|
|
def all_super_classes klass
|
|
klasses = []
|
|
while klass
|
|
klasses << klass
|
|
klass = ObjectSpace.internal_super_of(klass)
|
|
end
|
|
klasses
|
|
end
|
|
|
|
def test_internal_super_of
|
|
klasses = all_super_classes(String)
|
|
String.ancestors.each{|k|
|
|
case k
|
|
when Class
|
|
assert_equal(true, klasses.include?(k), k.inspect)
|
|
when Module
|
|
assert_equal(false, klasses.include?(k), k.inspect) # Internal object (T_ICLASS)
|
|
end
|
|
}
|
|
|
|
i = 0
|
|
ObjectSpace.each_object(Module){|o|
|
|
traverse_super_classes ObjectSpace.internal_super_of(o)
|
|
i += 1
|
|
}
|
|
assert_operator i, :>, 0
|
|
end
|
|
|
|
def test_count_symbols
|
|
assert_separately(%w[-robjspace], "#{<<~';;;'}")
|
|
h0 = ObjectSpace.count_symbols
|
|
|
|
syms = (1..128).map{|i| ("xyzzy#{i}_#{Process.pid}_#{rand(1_000_000)}_" * 128).to_sym}
|
|
syms << Class.new{define_method(syms[-1]){}}
|
|
|
|
h = ObjectSpace.count_symbols
|
|
m = proc {h0.inspect + "\n" + h.inspect}
|
|
assert_equal 127, h[:mortal_dynamic_symbol] - h0[:mortal_dynamic_symbol], m
|
|
assert_equal 1, h[:immortal_dynamic_symbol] - h0[:immortal_dynamic_symbol], m
|
|
assert_operator h[:immortal_static_symbol], :>=, Object.methods.size, m
|
|
assert_equal h[:immortal_symbol], h[:immortal_dynamic_symbol] + h[:immortal_static_symbol], m
|
|
;;;
|
|
end
|
|
|
|
def test_anonymous_class_name
|
|
assert_not_include ObjectSpace.dump(Class.new), '"name"'
|
|
assert_not_include ObjectSpace.dump(Module.new), '"name"'
|
|
end
|
|
|
|
def test_objspace_trace
|
|
assert_in_out_err(%w[-robjspace/trace], "#{<<-"begin;"}\n#{<<-'end;'}") do |out, err|
|
|
begin;
|
|
a = "foo"
|
|
b = "b" + "a" + "r"
|
|
c = 42
|
|
p a, b, c
|
|
end;
|
|
assert_equal ["objspace/trace is enabled"], err
|
|
assert_equal 3, out.size
|
|
assert_equal '"foo" @ -:2', out[0]
|
|
assert_equal '"bar" @ -:3', out[1]
|
|
assert_equal '42', out[2]
|
|
end
|
|
end
|
|
end
|