Thread-control Routines

The library routines for controlling threads can be used to implement threads that wait for another thread to terminate and then pick up a return value.

You should terminate any thread created using these library routines by one of the following methods:

A thread might not have been created by the thread-control routines. However, such a thread might still be known to the run-time system by the thread's use of run-time system services. Such a thread can be accessed via the thread-control library routines; it can use:

In a mixed-language environment, any thread known to the run-time system from its use of the run-time system, but not created by the run-time system or any of the thread control routines, must do one of the following:

An application can check that the run-time system used by a program supports the thread-control routines by calling either CBL_GET_OS_INFO or CBL_THREAD_SELF.

Example - Checking Which Run-time System a Program Supports

     call "CBL_THREAD_SELF" using thread-id
      on exeception
*       no cbl_thread routines support
     if  return-code = 1008
*       running in a single-threaded-only rts