ext/threads/shared/t/sv_simple.t thread shared variables
ext/threads/shared/typemap thread::shared types
ext/threads/t/basic.t ithreads
+ext/threads/t/libc.t testing libc functions for threadsafetyness
ext/threads/t/stress_cv.t Test with multiple threads, coderef cv argument.
ext/threads/t/stress_re.t Test with multiple threads, string cv argument and regexes.
ext/threads/t/stress_string.t Test with multiple threads, string cv argument.