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# frozen_string_literal: false
require 'envutil'
mn_supported_p = -> do
out, *_ = EnvUtil.invoke_ruby([{'RUBY_MN_THREADS' => '1'}, '-v'], '', true)
return /\+MN/ =~ out
end
if mn_supported_p.call
# test only on MN threads
else
return
end
class TestThreadLockNativeThread < Test::Unit::TestCase
def test_lock_native_thread
assert_separately([{'RUBY_MN_THREADS' => '1'}], <<-RUBY)
require '-test-/thread/lock_native_thread'
Thread.new{
assert_equal true, Thread.current.lock_native_thread
}.join
# main thread already has DNT
assert_equal false, Thread.current.lock_native_thread
RUBY
end
def test_lock_native_thread_tls
assert_separately([{'RUBY_MN_THREADS' => '1'}], <<-RUBY)
require '-test-/thread/lock_native_thread'
tn = 10
ln = 1_000
ts = tn.times.map{|i|
Thread.new(i){|i|
Thread.current.set_tls i
assert_equal true, Thread.current.lock_native_thread
ln.times{
assert_equal i, Thread.current.get_tls
Thread.pass
}
}
}
ts.each(&:join)
RUBY
end
end
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