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require 'test/unit'
require_relative "envutil"
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
1.upto(10000) {
tmp = [0,1,2,3,4,5,6,7,8,9]
}
tmp = nil
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 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_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_slot])
assert_equal(count[:FREE], stat[:heap_free_slot])
# measure again without GC.start
1000.times{ "a" + "b" }
GC.stat(stat)
ObjectSpace.count_objects(count)
assert_equal(count[:FREE], stat[:heap_free_slot])
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]")
# 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/, "")
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
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'
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_page_length]
(base_length * 500).times{ 'a'; nil }
GC.start
assert_equal base_length, GC.stat[:heap_eden_page_length], "invalid heap expanding"
a = []
(base_length * 500).times{ a << 'a'; nil }
GC.start
assert base_length < GC.stat[:heap_eden_page_length]
eom
end
def test_gc_internals
assert_not_nil GC::INTERNAL_CONSTANTS[:HEAP_OBJ_LIMIT]
assert_not_nil GC::INTERNAL_CONSTANTS[:RVALUE_SIZE]
end
end
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