execution: FAILED
main: has priority: 2
main: attempt read lock
main: acquired read lock
main: create wr_thread, with priority: 1
wr_thread: attempt write lock
main: create rd_thread, with priority: 0
rd_thread: attempt read lock
rd_thread: acquired read lock
rd_thread: unlock read lock
Test FAILED: rd_thread did not block on read lock, when a reader owns the lock, and a higher priority writer is waiting for the lock