diff options
-rw-r--r-- | test/ruby/test_thread.rb | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb index 6557f881fc..c3ebaf34d5 100644 --- a/test/ruby/test_thread.rb +++ b/test/ruby/test_thread.rb @@ -1241,23 +1241,44 @@ q.pop def test_fork_while_parent_locked skip 'needs fork' unless Process.respond_to?(:fork) + require 'tempfile' m = Thread::Mutex.new failures = 0 run = true - thrs = 50.times.map do - Thread.new do + errs = '' + nr = 50 + tmps = nr.times.map { Tempfile.new('Bug.15430.diagnosis') } + thrs = nr.times.map do |_i| + Thread.new(_i) do |i| + t = tmps[i] + t.sync = true while run - pid = fork { m.synchronize {} } + pid = fork do + STDERR.reopen(t.path) + tmps.each(&:close) + m.synchronize {} + end m.synchronize {} _, st = Process.waitpid2(pid) - m.synchronize { failures += 1 } unless st.success? + unless st.success? + m.synchronize do + failures += 1 + if errs.empty? + errs = st.inspect << t.read + t.rewind + end + end + end end end end sleep 0.5 run = false thrs.each(&:join) + assert_empty errs assert_equal 0, failures, '[ruby-core:90312] [Bug #15383]' + ensure + tmps&.each(&:close!) end def test_fork_while_mutex_locked_by_forker |