require 'test/unit' class TestGc < Test::Unit::TestCase class S def initialize(a) @a = a end end def test_gc prev_stress = GC.stress GC.stress = false assert_nothing_raised do tmp = nil 1.upto(10000) { tmp = [0,1,2,3,4,5,6,7,8,9] } end l=nil 100000.times { l = S.new(l) } GC.start assert true # reach here or dumps core l = [] 100000.times { l.push([l]) } GC.start assert true # reach here or dumps core GC.stress = prev_stress end def use_rgengc? GC::OPTS.include? 'USE_RGENGC'.freeze end def test_enable_disable GC.enable assert_equal(false, GC.enable) assert_equal(false, GC.disable) assert_equal(true, GC.disable) assert_equal(true, GC.disable) assert_nil(GC.start) assert_equal(true, GC.enable) assert_equal(false, GC.enable) ensure GC.enable end def test_start_full_mark return unless use_rgengc? GC.start(full_mark: false) assert_nil GC.latest_gc_info(:major_by) GC.start(full_mark: true) assert_not_nil GC.latest_gc_info(:major_by) end def test_start_immediate_sweep GC.start(immediate_sweep: false) assert_equal false, GC.latest_gc_info(:immediate_sweep) GC.start(immediate_sweep: true) assert_equal true, GC.latest_gc_info(:immediate_sweep) end def test_count c = GC.count GC.start assert_operator(c, :<, GC.count) end def test_stat res = GC.stat assert_equal(false, res.empty?) assert_kind_of(Integer, res[:count]) arg = Hash.new res = GC.stat(arg) assert_equal(arg, res) assert_equal(false, res.empty?) assert_kind_of(Integer, res[:count]) stat, count = {}, {} GC.start GC.stat(stat) ObjectSpace.count_objects(count) assert_equal(count[:TOTAL]-count[:FREE], stat[:heap_live_slots]) assert_equal(count[:FREE], stat[:heap_free_slots]) # measure again without GC.start 1000.times{ "a" + "b" } GC.stat(stat) ObjectSpace.count_objects(count) assert_equal(count[:FREE], stat[:heap_free_slots]) end def test_stat_argument assert_raise_with_message(ArgumentError, /\u{30eb 30d3 30fc}/) {GC.stat(:"\u{30eb 30d3 30fc}")} end def test_stat_single stat = GC.stat assert_equal stat[:count], GC.stat(:count) assert_raise(ArgumentError){ GC.stat(:invalid) } end def test_stat_constraints stat = GC.stat assert_equal stat[:total_allocated_pages], stat[:heap_allocated_pages] + stat[:total_freed_pages] assert_operator stat[:heap_sorted_length], :>=, stat[:heap_eden_pages] + stat[:heap_allocatable_pages], "stat is: " + stat.inspect assert_equal stat[:heap_available_slots], stat[:heap_live_slots] + stat[:heap_free_slots] + stat[:heap_final_slots] assert_equal stat[:heap_live_slots], stat[:total_allocated_objects] - stat[:total_freed_objects] - stat[:heap_final_slots] assert_equal stat[:heap_allocated_pages], stat[:heap_eden_pages] + stat[:heap_tomb_pages] if use_rgengc? assert_equal stat[:count], stat[:major_gc_count] + stat[:minor_gc_count] end end def test_latest_gc_info assert_separately %w[--disable-gem], __FILE__, __LINE__, <<-'eom' GC.start count = GC.stat(:heap_free_slots) + GC.stat(:heap_allocatable_pages) * GC::INTERNAL_CONSTANTS[:HEAP_OBJ_LIMIT] count.times{ "a" + "b" } assert_equal :newobj, GC.latest_gc_info[:gc_by] eom GC.start assert_equal :force, GC.latest_gc_info[:major_by] if use_rgengc? assert_equal :method, GC.latest_gc_info[:gc_by] assert_equal true, GC.latest_gc_info[:immediate_sweep] GC.stress = true assert_equal :force, GC.latest_gc_info[:major_by] ensure GC.stress = false end def test_latest_gc_info_argument info = {} GC.latest_gc_info(info) assert_not_empty info assert_equal info[:gc_by], GC.latest_gc_info(:gc_by) assert_raise(ArgumentError){ GC.latest_gc_info(:invalid) } assert_raise_with_message(ArgumentError, /\u{30eb 30d3 30fc}/) {GC.latest_gc_info(:"\u{30eb 30d3 30fc}")} end def test_singleton_method assert_in_out_err(%w[--disable-gems], <<-EOS, [], [], "[ruby-dev:42832]") GC.stress = true 10.times do obj = Object.new def obj.foo() end def obj.bar() raise "obj.foo is called, but this is obj.bar" end obj.foo end EOS end def test_singleton_method_added assert_in_out_err(%w[--disable-gems], <<-EOS, [], [], "[ruby-dev:44436]") class BasicObject undef singleton_method_added def singleton_method_added(mid) raise end end b = proc {} class << b; end b.clone rescue nil GC.start EOS end def test_gc_parameter env = { "RUBY_GC_MALLOC_LIMIT" => "60000000", "RUBY_GC_HEAP_INIT_SLOTS" => "100000" } assert_normal_exit("exit", "[ruby-core:39777]", :child_env => env) env = { "RUBYOPT" => "", "RUBY_GC_HEAP_INIT_SLOTS" => "100000" } assert_in_out_err([env, "-e", "exit"], "", [], [], "[ruby-core:39795]") assert_in_out_err([env, "-W0", "-e", "exit"], "", [], [], "[ruby-core:39795]") assert_in_out_err([env, "-W1", "-e", "exit"], "", [], [], "[ruby-core:39795]") assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_HEAP_INIT_SLOTS=100000/, "[ruby-core:39795]") env = { "RUBY_GC_HEAP_GROWTH_FACTOR" => "2.0", "RUBY_GC_HEAP_GROWTH_MAX_SLOTS" => "10000" } assert_normal_exit("exit", "", :child_env => env) assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_HEAP_GROWTH_FACTOR=2.0/, "") assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_HEAP_GROWTH_MAX_SLOTS=10000/, "[ruby-core:57928]") env = { "RUBY_GC_HEAP_INIT_SLOTS" => "100000", "RUBY_GC_HEAP_FREE_SLOTS" => "10000", "RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR" => "0.9", } assert_normal_exit("exit", "", :child_env => env) assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR=0\.9/, "") # always full GC when RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR < 1.0 assert_in_out_err([env, "-e", "1000_000.times{Object.new}; p(GC.stat[:minor_gc_count] < GC.stat[:major_gc_count])"], "", ['true'], //, "") if use_rgengc? # check obsolete assert_in_out_err([{'RUBY_FREE_MIN' => '100'}, '-w', '-eexit'], '', [], /RUBY_FREE_MIN is obsolete. Use RUBY_GC_HEAP_FREE_SLOTS instead/) assert_in_out_err([{'RUBY_HEAP_MIN_SLOTS' => '100'}, '-w', '-eexit'], '', [], /RUBY_HEAP_MIN_SLOTS is obsolete. Use RUBY_GC_HEAP_INIT_SLOTS instead/) env = { "RUBY_GC_MALLOC_LIMIT" => "60000000", "RUBY_GC_MALLOC_LIMIT_MAX" => "160000000", "RUBY_GC_MALLOC_LIMIT_GROWTH_FACTOR" => "2.0" } assert_normal_exit("exit", "", :child_env => env) assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_MALLOC_LIMIT=6000000/, "") assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_MALLOC_LIMIT_MAX=16000000/, "") assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_MALLOC_LIMIT_GROWTH_FACTOR=2.0/, "") if use_rgengc? env = { "RUBY_GC_OLDMALLOC_LIMIT" => "60000000", "RUBY_GC_OLDMALLOC_LIMIT_MAX" => "160000000", "RUBY_GC_OLDMALLOC_LIMIT_GROWTH_FACTOR" => "2.0" } assert_normal_exit("exit", "", :child_env => env) assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_OLDMALLOC_LIMIT=6000000/, "") assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_OLDMALLOC_LIMIT_MAX=16000000/, "") assert_in_out_err([env, "-w", "-e", "exit"], "", [], /RUBY_GC_OLDMALLOC_LIMIT_GROWTH_FACTOR=2.0/, "") end end def test_profiler_enabled GC::Profiler.enable assert_equal(true, GC::Profiler.enabled?) GC::Profiler.disable assert_equal(false, GC::Profiler.enabled?) ensure GC::Profiler.disable end def test_profiler_clear assert_separately %w[--disable-gem], __FILE__, __LINE__, <<-'eom', timeout: 30 GC::Profiler.enable GC.start assert_equal(1, GC::Profiler.raw_data.size) GC::Profiler.clear assert_equal(0, GC::Profiler.raw_data.size) 200.times{ GC.start } assert_equal(200, GC::Profiler.raw_data.size) GC::Profiler.clear assert_equal(0, GC::Profiler.raw_data.size) eom end def test_profiler_total_time GC::Profiler.enable GC::Profiler.clear GC.start assert_operator(GC::Profiler.total_time, :>=, 0) ensure GC::Profiler.disable end def test_finalizing_main_thread assert_in_out_err(%w[--disable-gems], <<-EOS, ["\"finalize\""], [], "[ruby-dev:46647]") ObjectSpace.define_finalizer(Thread.main) { p 'finalize' } EOS end def test_expand_heap assert_separately %w[--disable-gem], __FILE__, __LINE__, <<-'eom' GC.start base_length = GC.stat[:heap_eden_pages] (base_length * 500).times{ 'a' } GC.start assert_in_delta base_length, (v = GC.stat[:heap_eden_pages]), 1, "invalid heap expanding (base_length: #{base_length}, GC.stat[:heap_eden_pages]: #{v})" a = [] (base_length * 500).times{ a << 'a'; nil } GC.start assert_operator base_length, :<, GC.stat[:heap_eden_pages] + 1 eom end def test_gc_internals assert_not_nil GC::INTERNAL_CONSTANTS[:HEAP_OBJ_LIMIT] assert_not_nil GC::INTERNAL_CONSTANTS[:RVALUE_SIZE] end def test_sweep_in_finalizer bug9205 = '[ruby-core:58833] [Bug #9205]' 2.times do assert_ruby_status([], <<-'end;', bug9205, timeout: 60) raise_proc = proc do |id| GC.start end 1000.times do ObjectSpace.define_finalizer(Object.new, raise_proc) end end; end end def test_exception_in_finalizer bug9168 = '[ruby-core:58652] [Bug #9168]' assert_normal_exit(<<-'end;', bug9168, encoding: Encoding::ASCII_8BIT) raise_proc = proc {raise} 10000.times do ObjectSpace.define_finalizer(Object.new, raise_proc) Thread.handle_interrupt(RuntimeError => :immediate) {break} Thread.handle_interrupt(RuntimeError => :on_blocking) {break} Thread.handle_interrupt(RuntimeError => :never) {break} end end; end def test_interrupt_in_finalizer bug10595 = '[ruby-core:66825] [Bug #10595]' src = <<-'end;' Signal.trap(:INT, 'DEFAULT') pid = $$ Thread.start do 10.times { sleep 0.1 Process.kill("INT", pid) rescue break } if RUBY_PLATFORM.include?('solaris') $stderr.puts `/usr/bin/psig #{$$}` $stderr.puts `/usr/bin/psig #{Process.ppid}` elsif File.exist?('/proc/self/status') $stderr.puts IO.read('/proc/self/status') $stderr.puts IO.read("/proc/#{Process.ppid}/status") end end f = proc {1000.times {}} loop do ObjectSpace.define_finalizer(Object.new, f) end end; out, err, status = assert_in_out_err(["-e", src], "", [], [], bug10595, signal: :SEGV) do |*result| break result end unless /mswin|mingw/ =~ RUBY_PLATFORM assert_equal("INT", Signal.signame(status.termsig), bug10595) end assert_match(/Interrupt/, err.first, proc {err.join("\n")}) assert_empty(out) end def test_verify_internal_consistency assert_nil(GC.verify_internal_consistency) end def test_gc_stress_on_realloc assert_normal_exit(<<-'end;', '[Bug #9859]') class C def initialize @a = nil @b = nil @c = nil @d = nil @e = nil @f = nil end end GC.stress = true C.new end; end def test_gc_disabled_start begin disabled = GC.disable c = GC.count GC.start assert_equal 1, GC.count - c ensure GC.enable unless disabled end end end