1.1 --- a/PR.c	Wed Jun 12 14:12:06 2013 -0700
     1.2 +++ b/PR.c	Wed Jul 10 14:49:04 2013 -0700
     1.3 @@ -232,9 +232,11 @@
     1.4        process->executionIsComplete = TRUE;
     1.5      }
     1.6    #else
     1.7 -      //First get the "ACK" lock, then do normal wait for signal, then release
     1.8 -      // ACK lock, to let end-process know it can free the process struct
     1.9 -   pthread_mutex_lock( &(process->doneAckLock) );   
    1.10 +      //This is called from main thread, so must use OS thread constructs to
    1.11 +      // force the main thread to block (suspend) until it is signalled that
    1.12 +      // the process is complete.  One issue is that the mutex and cond variable
    1.13 +      // are inside the process data struct, which is freed when the process
    1.14 +      // ends!
    1.15     pthread_mutex_lock( &(process->doneLock) );
    1.16     while( process->executionIsComplete != TRUE )
    1.17      {