diff options
Diffstat (limited to 'test/ruby/test_gc.rb')
| -rw-r--r-- | test/ruby/test_gc.rb | 525 |
1 files changed, 410 insertions, 115 deletions
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb index 4251321119..09199c34b1 100644 --- a/test/ruby/test_gc.rb +++ b/test/ruby/test_gc.rb @@ -40,16 +40,91 @@ class TestGc < Test::Unit::TestCase end def test_enable_disable + EnvUtil.without_gc do + 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) + end + end + + def test_gc_config_full_mark_by_default + config = GC.config + assert_not_empty(config) + assert_true(config[:rgengc_allow_full_mark]) + end + + def test_gc_config_invalid_args + assert_raise(ArgumentError) { GC.config(0) } + end + + def test_gc_config_setting_returns_updated_config_hash + old_value = GC.config[:rgengc_allow_full_mark] + assert_true(old_value) + + new_value = GC.config(rgengc_allow_full_mark: false)[:rgengc_allow_full_mark] + assert_false(new_value) + new_value = GC.config(rgengc_allow_full_mark: nil)[:rgengc_allow_full_mark] + assert_false(new_value) + ensure + GC.config(rgengc_allow_full_mark: old_value) + GC.start + end + + def test_gc_config_setting_returns_config_hash + hash = GC.config(no_such_key: true) + assert_equal(GC.config, hash) + end + + def test_gc_config_disable_major GC.enable - assert_equal(false, GC.enable) - assert_equal(false, GC.disable) - assert_equal(true, GC.disable) - assert_equal(true, GC.disable) + GC.start + + GC.config(rgengc_allow_full_mark: false) + major_count = GC.stat[:major_gc_count] + minor_count = GC.stat[:minor_gc_count] + + arr = [] + (GC.stat_heap[0][:heap_eden_slots] * 2).times do + arr << Object.new + Object.new + end + + assert_equal(major_count, GC.stat[:major_gc_count]) + assert_operator(minor_count, :<=, GC.stat[:minor_gc_count]) assert_nil(GC.start) - assert_equal(true, GC.enable) - assert_equal(false, GC.enable) ensure - GC.enable + GC.config(rgengc_allow_full_mark: true) + GC.start + end + + def test_gc_config_disable_major_gc_start_always_works + GC.config(full_mark: false) + + major_count = GC.stat[:major_gc_count] + GC.start + + assert_operator(major_count, :<, GC.stat[:major_gc_count]) + ensure + GC.config(full_mark: true) + GC.start + end + + def test_gc_config_implementation + omit unless /darwin|linux/.match(RUBY_PLATFORM) + + gc_name = (ENV['RUBY_GC_LIBRARY'] || "default") + assert_equal gc_name, GC.config[:implementation] + end + + def test_gc_config_implementation_is_readonly + omit unless /darwin|linux/.match(RUBY_PLATFORM) + + assert_raise(ArgumentError) { GC.config(implementation: "somethingelse") } end def test_start_full_mark @@ -128,11 +203,12 @@ class TestGc < Test::Unit::TestCase omit 'stress' if GC.stress stat = GC.stat + # marking_time + sweeping_time could differ from time by 1 because they're stored in nanoseconds + assert_in_delta stat[:time], stat[:marking_time] + stat[:sweeping_time], 1 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] + assert_equal stat[:heap_allocated_pages], stat[:heap_eden_pages] + stat[:heap_empty_pages] if use_rgengc? assert_equal stat[:count], stat[:major_gc_count] + stat[:minor_gc_count] @@ -148,19 +224,24 @@ class TestGc < Test::Unit::TestCase GC.stat_heap(0, stat_heap) GC.stat(stat) - GC::INTERNAL_CONSTANTS[:SIZE_POOL_COUNT].times do |i| - GC.stat_heap(i, stat_heap) - GC.stat(stat) + GC::INTERNAL_CONSTANTS[:HEAP_COUNT].times do |i| + EnvUtil.without_gc do + GC.stat_heap(i, stat_heap) + GC.stat(stat) + end - assert_equal GC::INTERNAL_CONSTANTS[:RVALUE_SIZE] * (2**i), stat_heap[:slot_size] - assert_operator stat_heap[:heap_allocatable_pages], :<=, stat[:heap_allocatable_pages] + assert_equal (GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE] + GC::INTERNAL_CONSTANTS[:RVALUE_OVERHEAD]) * (2**i), stat_heap[:slot_size] + assert_operator stat_heap[:heap_live_slots], :<=, stat[:heap_live_slots] + assert_operator stat_heap[:heap_free_slots], :<=, stat[:heap_free_slots] + assert_operator stat_heap[:heap_final_slots], :<=, stat[:heap_final_slots] assert_operator stat_heap[:heap_eden_pages], :<=, stat[:heap_eden_pages] assert_operator stat_heap[:heap_eden_slots], :>=, 0 - assert_operator stat_heap[:heap_tomb_pages], :<=, stat[:heap_tomb_pages] - assert_operator stat_heap[:heap_tomb_slots], :>=, 0 assert_operator stat_heap[:total_allocated_pages], :>=, 0 - assert_operator stat_heap[:total_freed_pages], :>=, 0 assert_operator stat_heap[:force_major_gc_count], :>=, 0 + assert_operator stat_heap[:force_incremental_marking_finish_count], :>=, 0 + assert_operator stat_heap[:total_allocated_objects], :>=, 0 + assert_operator stat_heap[:total_freed_objects], :>=, 0 + assert_operator stat_heap[:total_freed_objects], :<=, stat_heap[:total_allocated_objects] end GC.stat_heap(0, stat_heap) @@ -168,21 +249,25 @@ class TestGc < Test::Unit::TestCase assert_equal stat_heap[:slot_size], GC.stat_heap(0)[:slot_size] assert_raise(ArgumentError) { GC.stat_heap(-1) } - assert_raise(ArgumentError) { GC.stat_heap(GC::INTERNAL_CONSTANTS[:SIZE_POOL_COUNT]) } + assert_raise(ArgumentError) { GC.stat_heap(GC::INTERNAL_CONSTANTS[:HEAP_COUNT]) } end def test_stat_heap_all stat_heap_all = {} stat_heap = {} + # Initialize to prevent GC in future calls + GC.stat_heap(0, stat_heap) + GC.stat_heap(nil, stat_heap_all) - 2.times do - GC.stat_heap(0, stat_heap) + GC::INTERNAL_CONSTANTS[:HEAP_COUNT].times do |i| GC.stat_heap(nil, stat_heap_all) - end - - GC::INTERNAL_CONSTANTS[:SIZE_POOL_COUNT].times do |i| GC.stat_heap(i, stat_heap) + # Remove keys that can vary between invocations + %i(total_allocated_objects heap_live_slots heap_free_slots).each do |sym| + stat_heap[sym] = stat_heap_all[i][sym] = 0 + end + assert_equal stat_heap, stat_heap_all[i] end @@ -194,31 +279,51 @@ class TestGc < Test::Unit::TestCase stat = GC.stat stat_heap = GC.stat_heap - GC.stat(stat) - GC.stat_heap(nil, stat_heap) + 2.times do + GC.stat(stat) + GC.stat_heap(nil, stat_heap) + end stat_heap_sum = Hash.new(0) stat_heap.values.each do |hash| hash.each { |k, v| stat_heap_sum[k] += v } end - assert_equal stat[:heap_allocatable_pages], stat_heap_sum[:heap_allocatable_pages] + assert_equal stat[:heap_live_slots], stat_heap_sum[:heap_live_slots] + assert_equal stat[:heap_free_slots], stat_heap_sum[:heap_free_slots] + assert_equal stat[:heap_final_slots], stat_heap_sum[:heap_final_slots] assert_equal stat[:heap_eden_pages], stat_heap_sum[:heap_eden_pages] - assert_equal stat[:heap_tomb_pages], stat_heap_sum[:heap_tomb_pages] - assert_equal stat[:heap_available_slots], stat_heap_sum[:heap_eden_slots] + stat_heap_sum[:heap_tomb_slots] - assert_equal stat[:total_allocated_pages], stat_heap_sum[:total_allocated_pages] - assert_equal stat[:total_freed_pages], stat_heap_sum[:total_freed_pages] + assert_equal stat[:heap_available_slots], stat_heap_sum[:heap_eden_slots] + assert_equal stat[:total_allocated_objects], stat_heap_sum[:total_allocated_objects] + assert_equal stat[:total_freed_objects], stat_heap_sum[:total_freed_objects] + end + + def test_measure_total_time + assert_separately([], __FILE__, __LINE__, <<~RUBY, timeout: 60) + GC.measure_total_time = false + + time_before = GC.stat(:time) + + # Generate some garbage + Random.new.bytes(100 * 1024 * 1024) + GC.start + + time_after = GC.stat(:time) + + # If time measurement is disabled, the time stat should not change + assert_equal time_before, time_after + RUBY end def test_latest_gc_info omit 'stress' if GC.stress - 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_PAGE_OBJ_LIMIT] - count.times{ "a" + "b" } - assert_equal :newobj, GC.latest_gc_info[:gc_by] - eom + assert_separately([], __FILE__, __LINE__, <<-'RUBY') + GC.start + count = GC.stat(:heap_free_slots) + GC.stat(:heap_allocatable_slots) + count.times{ "a" + "b" } + assert_equal :newobj, GC.latest_gc_info[:gc_by] + RUBY GC.latest_gc_info(h = {}) # allocate hash and rehearsal GC.start @@ -254,20 +359,64 @@ class TestGc < Test::Unit::TestCase 3.times { GC.start } assert_nil GC.latest_gc_info(:need_major_by) - # allocate objects until need_major_by is set or major GC happens - major_count = GC.stat(:major_gc_count) - objects = [] - while GC.stat(:major_gc_count) == major_count && GC.latest_gc_info(:need_major_by).nil? - objects.append(100.times.map { '*' }) + EnvUtil.without_gc do + # allocate objects until need_major_by is set or major GC happens + objects = [] + while GC.latest_gc_info(:need_major_by).nil? + objects.append(100.times.map { '*' }) + GC.start(full_mark: false) + end + + # We need to ensure that no GC gets ran before the call to GC.start since + # it would trigger a major GC. Assertions could allocate objects and + # trigger a GC so we don't run assertions until we perform the major GC. + need_major_by = GC.latest_gc_info(:need_major_by) + GC.start(full_mark: false) # should be upgraded to major + major_by = GC.latest_gc_info(:major_by) + + assert_not_nil(need_major_by) + assert_not_nil(major_by) end + end - assert_not_nil GC.latest_gc_info(:need_major_by) - GC.start(full_mark: false) # should be upgraded to major - assert_not_nil GC.latest_gc_info(:major_by) + def test_latest_gc_info_weak_references_count + assert_separately([], __FILE__, __LINE__, <<~RUBY) + GC.disable + COUNT = 10_000 + # Some weak references may be created, so allow some margin of error + error_tolerance = 100 + + # Run full GC to collect stats about weak references + GC.start + + before_weak_references_count = GC.latest_gc_info(:weak_references_count) + + # Create some WeakMaps + ary = Array.new(COUNT) + COUNT.times.with_index do |i| + ary[i] = ObjectSpace::WeakMap.new + end + + # Run full GC to collect stats about weak references + GC.start + + assert_operator(GC.latest_gc_info(:weak_references_count), :>=, before_weak_references_count + COUNT - error_tolerance) + + before_weak_references_count = GC.latest_gc_info(:weak_references_count) + + # Clear ary, so if ary itself is somewhere on the stack, it won't hold all references + ary.clear + ary = nil + + # Free ary, which should GC all the WeakMaps + GC.start + + assert_operator(GC.latest_gc_info(:weak_references_count), :<=, before_weak_references_count - COUNT + error_tolerance) + RUBY end def test_stress_compile_send - assert_in_out_err(%w[--disable-gems], <<-EOS, [], [], "") + assert_in_out_err([], <<-EOS, [], [], "") GC.stress = true begin eval("A::B.c(1, 1, d: 234)") @@ -277,7 +426,7 @@ class TestGc < Test::Unit::TestCase end def test_singleton_method - assert_in_out_err(%w[--disable-gems], <<-EOS, [], [], "[ruby-dev:42832]") + assert_in_out_err([], <<-EOS, [], [], "[ruby-dev:42832]") GC.stress = true 10.times do obj = Object.new @@ -289,7 +438,7 @@ class TestGc < Test::Unit::TestCase end def test_singleton_method_added - assert_in_out_err(%w[--disable-gems], <<-EOS, [], [], "[ruby-dev:44436]") + assert_in_out_err([], <<-EOS, [], [], "[ruby-dev:44436]", timeout: 30) class BasicObject undef singleton_method_added def singleton_method_added(mid) @@ -304,25 +453,17 @@ class TestGc < Test::Unit::TestCase end def test_gc_parameter - env = { - "RUBY_GC_HEAP_INIT_SLOTS" => "100" - } - assert_in_out_err([env, "-W0", "-e", "exit"], "", [], [], "[Bug #19284]") - - env = { - "RUBY_GC_MALLOC_LIMIT" => "60000000", - "RUBY_GC_HEAP_INIT_SLOTS" => "100000" - } - assert_normal_exit("exit", "[ruby-core:39777]", :child_env => env) + env = {} + GC.stat_heap.keys.each do |heap| + env["RUBY_GC_HEAP_#{heap}_INIT_SLOTS"] = "200000" + end + assert_normal_exit("exit", "", :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 = {} + GC.stat_heap.keys.each do |heap| + env["RUBY_GC_HEAP_#{heap}_INIT_SLOTS"] = "0" + end + assert_normal_exit("exit", "", :child_env => env) env = { "RUBY_GC_HEAP_GROWTH_FACTOR" => "2.0", @@ -332,16 +473,13 @@ class TestGc < Test::Unit::TestCase 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? + if use_rgengc? + env = { + "RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR" => "0.4", + } + # always full GC when RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR < 1.0 + assert_in_out_err([env, "-e", "GC.start; 1000_000.times{Object.new}; p(GC.stat[:minor_gc_count] < GC.stat[:major_gc_count])"], "", ['true'], //, "") + end env = { "RUBY_GC_MALLOC_LIMIT" => "60000000", @@ -364,6 +502,55 @@ class TestGc < Test::Unit::TestCase 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 + + ["0.01", "0.1", "1.0"].each do |i| + env = {"RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR" => "0", "RUBY_GC_HEAP_REMEMBERED_WB_UNPROTECTED_OBJECTS_LIMIT_RATIO" => i} + assert_separately([env, "-W0"], __FILE__, __LINE__, <<~RUBY) + GC.disable + GC.start + assert_equal((GC.stat[:old_objects] * #{i}).to_i, GC.stat[:remembered_wb_unprotected_objects_limit]) + RUBY + end + end + + def test_gc_parameter_init_slots + omit "[Bug #21203] This test is flaky and intermittently failing now" + + assert_separately([], __FILE__, __LINE__, <<~RUBY, timeout: 60) + # Constant from gc.c. + GC_HEAP_INIT_SLOTS = 10_000 + + gc_count = GC.stat(:count) + # Fill up all of the size pools to the init slots + GC::INTERNAL_CONSTANTS[:HEAP_COUNT].times do |i| + capa = (GC.stat_heap(i, :slot_size) - GC::INTERNAL_CONSTANTS[:RVALUE_OVERHEAD] - (2 * RbConfig::SIZEOF["void*"])) / RbConfig::SIZEOF["void*"] + while GC.stat_heap(i, :heap_eden_slots) < GC_HEAP_INIT_SLOTS + Array.new(capa) + end + end + + assert_equal gc_count, GC.stat(:count) + RUBY + + env = {} + sizes = GC.stat_heap.keys.reverse.map { 20_000 } + GC.stat_heap.keys.each do |heap| + env["RUBY_GC_HEAP_#{heap}_INIT_SLOTS"] = sizes[heap].to_s + end + assert_separately([env, "-W0"], __FILE__, __LINE__, <<~RUBY, timeout: 60) + SIZES = #{sizes} + + gc_count = GC.stat(:count) + # Fill up all of the size pools to the init slots + GC::INTERNAL_CONSTANTS[:HEAP_COUNT].times do |i| + capa = (GC.stat_heap(i, :slot_size) - GC::INTERNAL_CONSTANTS[:RVALUE_OVERHEAD] - (2 * RbConfig::SIZEOF["void*"])) / RbConfig::SIZEOF["void*"] + while GC.stat_heap(i, :heap_eden_slots) < SIZES[i] + Array.new(capa) + end + end + + assert_equal gc_count, GC.stat(:count) + RUBY end def test_profiler_enabled @@ -377,19 +564,27 @@ class TestGc < Test::Unit::TestCase def test_profiler_clear omit "for now" - assert_separately %w[--disable-gem], __FILE__, __LINE__, <<-'eom', timeout: 30 - GC::Profiler.enable + assert_separately([], __FILE__, __LINE__, <<-'RUBY', 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) + 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) + RUBY + end - 200.times{ GC.start } - assert_equal(200, GC::Profiler.raw_data.size) - GC::Profiler.clear - assert_equal(0, GC::Profiler.raw_data.size) - eom + def test_profiler_raw_data + GC::Profiler.enable + GC.start + assert GC::Profiler.raw_data + ensure + GC::Profiler.disable end def test_profiler_total_time @@ -403,42 +598,53 @@ class TestGc < Test::Unit::TestCase end def test_finalizing_main_thread - assert_in_out_err(%w[--disable-gems], <<-EOS, ["\"finalize\""], [], "[ruby-dev:46647]") + assert_in_out_err([], <<-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 - base_length = GC.stat[:heap_eden_pages] - (base_length * 500).times{ 'a' } - GC.start - assert_in_epsilon base_length, (v = GC.stat[:heap_eden_pages]), 1/8r, - "invalid heap expanding (base_length: #{base_length}, GC.stat[:heap_eden_pages]: #{v})" + assert_separately([], __FILE__, __LINE__, <<~'RUBY') + GC.start + base_length = GC.stat[:heap_eden_pages] + (base_length * 500).times{ 'a' } + GC.start + base_length = GC.stat[:heap_eden_pages] + (base_length * 500).times{ 'a' } + GC.start + assert_in_epsilon base_length, (v = GC.stat[:heap_eden_pages]), 1/8r, + "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 + a = [] + (base_length * 500).times{ a << 'a'; nil } + GC.start + assert_operator base_length, :<, GC.stat[:heap_eden_pages] + 1 + RUBY end def test_thrashing_for_young_objects # This test prevents bugs like [Bug #18929] - assert_separately %w[--disable-gem], __FILE__, __LINE__, <<-'RUBY' + assert_separately([], __FILE__, __LINE__, <<-'RUBY', timeout: 60) # Grow the heap @ary = 100_000.times.map { Object.new } # Warmup to make sure heap stabilizes 1_000_000.times { Object.new } - before_stats = GC.stat + # We need to pre-allocate all the hashes for GC.stat calls, because + # otherwise the call to GC.stat/GC.stat_heap itself could cause a new + # page to be allocated and the before/after assertions will fail + before_stats = {} + after_stats = {} + # stat_heap needs a hash of hashes for each heap; easiest way to get the + # right shape for that is just to call stat_heap with no argument before_stat_heap = GC.stat_heap + after_stat_heap = GC.stat_heap + + # Now collect the actual stats + GC.stat before_stats + GC.stat_heap nil, before_stat_heap 1_000_000.times { Object.new } @@ -446,24 +652,50 @@ class TestGc < Test::Unit::TestCase # running a minor GC here will guarantee that GC will be complete GC.start(full_mark: false) - after_stats = GC.stat - after_stat_heap = GC.stat_heap + GC.stat after_stats + GC.stat_heap nil, after_stat_heap # Debugging output to for failures in trunk-repeat50@phosphorus-docker debug_msg = "before_stats: #{before_stats}\nbefore_stat_heap: #{before_stat_heap}\nafter_stats: #{after_stats}\nafter_stat_heap: #{after_stat_heap}" # Should not be thrashing in page creation assert_equal before_stats[:heap_allocated_pages], after_stats[:heap_allocated_pages], debug_msg - assert_equal 0, after_stats[:heap_tomb_pages], debug_msg assert_equal 0, after_stats[:total_freed_pages], debug_msg # Only young objects, so should not trigger major GC assert_equal before_stats[:major_gc_count], after_stats[:major_gc_count], debug_msg RUBY end + def test_heaps_grow_independently + # [Bug #21214] + + assert_separately([], __FILE__, __LINE__, <<-'RUBY', timeout: 60) + COUNT = 1_000_000 + + def allocate_small_object = [] + def allocate_large_object = Array.new(10) + + @arys = Array.new(COUNT) do + # Allocate 10 small transient objects + 10.times { allocate_small_object } + # Allocate 1 large object that is persistent + allocate_large_object + end + + # Running GC here is required to prevent this test from being flaky because + # the heap for the small transient objects may not have been cleared by the + # GC causing heap_available_slots to be slightly over 2 * COUNT. + GC.start + + heap_available_slots = GC.stat(:heap_available_slots) + + assert_operator(heap_available_slots, :<, COUNT * 2, "GC.stat: #{GC.stat}\nGC.stat_heap: #{GC.stat_heap}") + RUBY + end + def test_gc_internals assert_not_nil GC::INTERNAL_CONSTANTS[:HEAP_PAGE_OBJ_LIMIT] - assert_not_nil GC::INTERNAL_CONSTANTS[:RVALUE_SIZE] + assert_not_nil GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE] end def test_sweep_in_finalizer @@ -494,6 +726,7 @@ class TestGc < Test::Unit::TestCase end def test_interrupt_in_finalizer + omit 'randomly hangs on many platforms' if ENV.key?('GITHUB_ACTIONS') bug10595 = '[ruby-core:66825] [Bug #10595]' src = <<-'end;' Signal.trap(:INT, 'DEFAULT') @@ -509,7 +742,7 @@ class TestGc < Test::Unit::TestCase ObjectSpace.define_finalizer(Object.new, f) end end; - out, err, status = assert_in_out_err(["-e", src], "", [], [], bug10595, signal: :SEGV) do |*result| + out, err, status = assert_in_out_err(["-e", src], "", [], [], bug10595, signal: :SEGV, timeout: 100) do |*result| break result end unless /mswin|mingw/ =~ RUBY_PLATFORM @@ -520,11 +753,11 @@ class TestGc < Test::Unit::TestCase end def test_finalizer_passed_object_id - assert_in_out_err(%w[--disable-gems], <<-EOS, ["true"], []) + assert_in_out_err([], <<~RUBY, ["true"], []) o = Object.new obj_id = o.object_id ObjectSpace.define_finalizer(o, ->(id){ p id == obj_id }) - EOS + RUBY end def test_verify_internal_consistency @@ -554,13 +787,17 @@ class TestGc < Test::Unit::TestCase end def test_gc_disabled_start - begin - disabled = GC.disable + EnvUtil.without_gc do c = GC.count GC.start assert_equal 1, GC.count - c - ensure - GC.enable unless disabled + end + + EnvUtil.without_gc do + c = GC.count + GC.start(immediate_mark: false, immediate_sweep: false) + 10_000.times { Object.new } + assert_equal 1, GC.count - c end end @@ -572,6 +809,8 @@ class TestGc < Test::Unit::TestCase end def test_exception_in_finalizer_procs + require '-test-/stack' + omit 'failing with ASAN' if Thread.asan? assert_in_out_err(["-W0"], "#{<<~"begin;"}\n#{<<~'end;'}", %w[c1 c2]) c1 = proc do puts "c1" @@ -592,6 +831,8 @@ class TestGc < Test::Unit::TestCase end def test_exception_in_finalizer_method + require '-test-/stack' + omit 'failing with ASAN' if Thread.asan? assert_in_out_err(["-W0"], "#{<<~"begin;"}\n#{<<~'end;'}", %w[c1 c2]) def self.c1(x) puts "c1" @@ -609,6 +850,15 @@ class TestGc < Test::Unit::TestCase obj = nil end end; + + assert_normal_exit "#{<<~"begin;"}\n#{<<~'end;'}", '[Bug #20042]' + begin; + def (f = Object.new).call = nil # missing ID + o = Object.new + ObjectSpace.define_finalizer(o, f) + o = nil + GC.start + end; end def test_object_ids_never_repeat @@ -624,4 +874,49 @@ class TestGc < Test::Unit::TestCase Module.new.class_eval( (["# shareable_constant_value: literal"] + (0..100000).map {|i| "M#{ i } = {}" }).join("\n")) end + + def test_old_to_young_reference + EnvUtil.without_gc do + require "objspace" + + old_obj = Object.new + 4.times { GC.start } + + assert_include ObjectSpace.dump(old_obj), '"old":true' + + young_obj = Object.new + old_obj.instance_variable_set(:@test, young_obj) + + # Not immediately promoted to old generation + 3.times do + assert_not_include ObjectSpace.dump(young_obj), '"old":true' + GC.start + end + + # Takes 4 GC to promote to old generation + GC.start + assert_include ObjectSpace.dump(young_obj), '"old":true' + end + end + + def test_finalizer_not_run_with_vm_lock + assert_ractor(<<~'RUBY') + Thread.new do + loop do + Encoding.list.each do |enc| + enc.names + end + end + end + + o = Object.new + ObjectSpace.define_finalizer(o, proc do + sleep 0.5 # finalizer shouldn't be run with VM lock, otherwise this context switch will crash + end) + o = nil + 4.times do + GC.start + end + RUBY + end end |