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require "test/unit"
class TestObjSpaceRactor < Test::Unit::TestCase
def test_tracing_does_not_crash
assert_ractor(<<~RUBY, require: 'objspace')
ObjectSpace.trace_object_allocations do
r = Ractor.new do
_obj = 'a' * 1024
end
r.join
end
RUBY
end
def test_undefine_finalizer
assert_ractor(<<~'RUBY', require: 'objspace')
def fin
->(id) { }
end
ractors = 5.times.map do
Ractor.new do
10_000.times do
o = Object.new
ObjectSpace.define_finalizer(o, fin)
ObjectSpace.undefine_finalizer(o)
end
end
end
ractors.each(&:join)
RUBY
end
def test_copy_finalizer
assert_ractor(<<~'RUBY', require: 'objspace')
def fin
->(id) { }
end
OBJ = Object.new
ObjectSpace.define_finalizer(OBJ, fin)
OBJ.freeze
ractors = 5.times.map do
Ractor.new do
10_000.times do
OBJ.clone
end
end
end
ractors.each(&:join)
RUBY
end
def test_trace_object_allocations_with_ractor_tracepoint
# Test that ObjectSpace.trace_object_allocations works globally across all Ractors
assert_ractor(<<~'RUBY', require: 'objspace')
ObjectSpace.trace_object_allocations do
obj1 = Object.new; line1 = __LINE__
assert_equal __FILE__, ObjectSpace.allocation_sourcefile(obj1)
assert_equal line1, ObjectSpace.allocation_sourceline(obj1)
r = Ractor.new {
obj = Object.new; line = __LINE__
[line, obj]
}
obj2 = Object.new; line2 = __LINE__
assert_equal __FILE__, ObjectSpace.allocation_sourcefile(obj2)
assert_equal line2, ObjectSpace.allocation_sourceline(obj2)
expected_line, ractor_obj = r.value
assert_equal __FILE__, ObjectSpace.allocation_sourcefile(ractor_obj)
assert_equal expected_line, ObjectSpace.allocation_sourceline(ractor_obj)
obj3 = Object.new; line3 = __LINE__
assert_equal __FILE__, ObjectSpace.allocation_sourcefile(obj3)
assert_equal line3, ObjectSpace.allocation_sourceline(obj3)
end
RUBY
end
end
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