THREAD_START, /**< First action in each thread */
THREAD_YIELD, /**< A thread yield action */
THREAD_JOIN, /**< A thread join action */
+ THREAD_FINISH, /**< A thread completion action */
ATOMIC_READ, /**< An atomic read action */
ATOMIC_WRITE, /**< An atomic write action */
ATOMIC_RMWR, /**< The read part of an atomic RMW action */