src/hotspot/share/runtime/vm_version.hpp

rev 52689 : 8213224: Move code related to GC threads calculation out of AdaptiveSizePolicy
Summary: Consolidate code related to GC threads calculation into a single class

*** 54,69 ****
    static int          _vm_major_version;
    static int          _vm_minor_version;
    static int          _vm_security_version;
    static int          _vm_patch_version;
    static int          _vm_build_number;
-   static unsigned int _parallel_worker_threads;
-   static bool         _parallel_worker_threads_initialized;
  
-   static unsigned int nof_parallel_worker_threads(unsigned int num,
-                                                   unsigned int dem,
-                                                   unsigned int switch_pt);
   public:
    // Called as part of the runtime services initialization which is
    // called from the management module initialization (via init_globals())
    // after argument parsing and attaching of the main thread has
    // occurred.  Examines a variety of the hardware capabilities of
--- 54,64 ----
*** 151,163 ****
    // Returns the number of parallel threads to be used for VM
    // work.  If that number has not been calculated, do so and
    // save it.  Returns ParallelGCThreads if it is set on the
    // command line.
    static unsigned int parallel_worker_threads();
!   // Calculates and returns the number of parallel threads.  May
!   // be VM version specific.
!   static unsigned int calc_parallel_worker_threads();
  
    // Does this CPU support spin wait instruction?
    static bool supports_on_spin_wait() { return false; }
  };
  
--- 146,159 ----
    // Returns the number of parallel threads to be used for VM
    // work.  If that number has not been calculated, do so and
    // save it.  Returns ParallelGCThreads if it is set on the
    // command line.
    static unsigned int parallel_worker_threads();
! 
!   // Denominator for computing default ParallelGCThreads for machines with
!   // a large number of cores.
!   static uint parallel_worker_threads_denominator() { return 8; }
  
    // Does this CPU support spin wait instruction?
    static bool supports_on_spin_wait() { return false; }
  };