HP OpenVMS Systems

Identifying and counting threads?

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The Question is:

 
Is there a way to now how many threads a process has running at one time ?
I'm developing a multithread server and want to know if I'm destroying all
threads when the client disconnects. But I havent found a way to see the
number of threads currently act
ive.
 
Thanks for the time.
 
 

The Answer is :

 
  If you as the developer are wondering if your application is working as
  expected, then the OpenVMS Wizard would recommend running your application
  under the debugger and using the SHOW TASK or SHOW THREAD commands
  (depending on which version of the debugger you are using).
 
  If you seek some way for your application to determine programmatically
  (i.e., at run-time) what threads exist, the OpenVMS Wizard would recommend
  your application track what threads have been created; any thread which
  has not yet joined (or detached) can be considered to still exist.  As
  for threads created by subsystems of your application, those subsystems
  should keep track of them and provide a mechanism for the calling code
  to request their termination.  Beyond that, there is no way for any single
  component of an application to see all threads in the process, as that
  runs counter to the notion of modular software construction.
 
  You could of course simply exit and restart the application (via a call
  to LIB$DO_COMMAND or otherwise) if the application environment becomes
  hopelessly snarled and confused.
 

  

     

     
answer written or last revised on ( 4-FEB-2000 )
     
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