src/share/vm/gc_implementation/g1/concurrentMark.hpp

rev 3952 : 8005875: G1: Kitchensink fails with ParallelGCThreads=0
Summary: Check that the concurrent marking worker gang exists in ConcurrentMark::print_worker_threads_on().
Reviewed-by:

*** 497,507 ****
    bool cleanup_list_is_empty() {
      return _cleanup_list.is_empty();
    }
  
    // accessor methods
!   uint parallel_marking_threads() { return _parallel_marking_threads; }
    uint max_parallel_marking_threads() { return _max_parallel_marking_threads;}
    double sleep_factor()             { return _sleep_factor; }
    double marking_task_overhead()    { return _marking_task_overhead;}
    double cleanup_sleep_factor()     { return _cleanup_sleep_factor; }
    double cleanup_task_overhead()    { return _cleanup_task_overhead;}
--- 497,507 ----
    bool cleanup_list_is_empty() {
      return _cleanup_list.is_empty();
    }
  
    // accessor methods
!   uint parallel_marking_threads() const   { return _parallel_marking_threads; }
    uint max_parallel_marking_threads()     { return _max_parallel_marking_threads;}
    double sleep_factor()                   { return _sleep_factor; }
    double marking_task_overhead()          { return _marking_task_overhead;}
    double cleanup_sleep_factor()           { return _cleanup_sleep_factor; }
    double cleanup_task_overhead()          { return _cleanup_task_overhead;}