HPlogo System Debug Reference Manual: HP 3000 MPE/iX Computer Systems > Chapter 4 System Debug Command Specifications

TERM

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Debug only

Controls the synchronization of several debug processes on a single terminal.

Syntax

   TERM        

   TERM LIST   

   TERM NEXT   

Terminal locking allows multiple processes to use a single terminal for debugging without confusion.

TERM LIST shows information about processes waiting for the terminal semaphore.

TERM NEXT grants the terminal to the process at the head of the waiting list.

Exiting, continuing, and stepping from the debugger perform an implicit TERM NEXT command.

Parameters

TERM, TERM LIST

Lists information about processes waiting to enter the debugger for the current session.

TERM NEXT

If we own the terminal semaphore, release it and allow the next process waiting for it to enter the debugger. Our process is then queued at the end of the list for the semaphore.

Related environment variables: TERM_LOCKING.

Examples

   $(3b) nmdebug > = 2 + 2 

   $4



   PIN 4c is waiting to enter Debug



   $(3b) nmdebug > term list 

   Current term owner: 3b  Next pin: 1a  # Waiting pins: 2 

A processes has just notified us that it is waiting to enter Debug. We then list information about the waiting PINS. We see that there are two PINs waiting and the first PIN in the queue is 1a.

   $(3b) nmdebug > term next 



   PIN 3b is waiting to enter Debug



   $(1a) nmdebug > term list 

   Current term owner: 1a  Next pin: 4c  # Waiting pins: 2 

We gave away the semaphore and let the next PIN into Debug (PIN 1a). This placed us (PIN 3b) at the end of the queue. We next listed information about the waiting PINs and see that PIN 4c has moved to the front of the queue.

Limitations, Restrictions

Due to the implementation of semaphores, Debug cannot list all of the PINs in the queue, just the first one and a count.

CAUTION: The output format of all System Debug commands is subject to change without notice. Programs that are developed to postprocess System Debug output should not depend on the exact format (spacing, alignment, number of lines, uppercase or lowercase, or spelling) of any System Debug command output.
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