The function void pthread_exit(void *value_ptr); terminates the calling thread and makes the value 'value_ptr' available to any successful join with the terminating thread. Any cancelation cleanup handlers that have been pushed and not yet popped shall be popped and executed in the reverse order that they were pushed. After all cancelation cleanup handlers have been executed, if the thread has any thread-specific data, appriopriate destructor functions shall be called in an unspecified order. Thread termination does not release any application visible process resources include, but not limited to, mutexes and file descriptors, nor does it perform any process-level cleanup actions, including but not limited to, calling any atexit() routines that may exist. An implicit call to pthread_exit() is made when a thread other than the thread in which main() was first invoked returns from the start routine that was used to create it. The function's return value shall serve as the thread's exit status. The process shall exit with an exit status of 0 after the last thread has been terminated. The behavior shall be as if the implemenation called exit() with a zero argument at thread termination time. The pthread_exit() function cannot return to its called.