src/share/vm/gc/shared/workgroup.hpp

*** 388,403 ****
  // enumeration type.
  
  class SubTasksDone: public CHeapObj<mtInternal> {
    uint* _tasks;
    uint _n_tasks;
-   // _n_threads is used to determine when a sub task is done.
-   // It does not control how many threads will execute the subtask
-   // but must be initialized to the number that do execute the task
-   // in order to correctly decide when the subtask is done (all the
-   // threads working on the task have finished).
-   uint _n_threads;
    uint _threads_completed;
  #ifdef ASSERT
    volatile uint _claimed;
  #endif
  
--- 388,397 ----
*** 411,434 ****
    SubTasksDone(uint n);
  
    // True iff the object is in a valid state.
    bool valid();
  
-   // Get/set the number of parallel threads doing the tasks to "t".  Can only
-   // be called before tasks start or after they are complete.
-   uint n_threads() { return _n_threads; }
-   void set_n_threads(uint t);
- 
    // Returns "false" if the task "t" is unclaimed, and ensures that task is
    // claimed.  The task "t" is required to be within the range of "this".
    bool is_task_claimed(uint t);
  
    // The calling thread asserts that it has attempted to claim all the
    // tasks that it will try to claim.  Every thread in the parallel task
    // must execute this.  (When the last thread does so, the task array is
    // cleared.)
!   void all_tasks_completed();
  
    // Destructor.
    ~SubTasksDone();
  };
  
--- 405,425 ----
    SubTasksDone(uint n);
  
    // True iff the object is in a valid state.
    bool valid();
  
    // Returns "false" if the task "t" is unclaimed, and ensures that task is
    // claimed.  The task "t" is required to be within the range of "this".
    bool is_task_claimed(uint t);
  
    // The calling thread asserts that it has attempted to claim all the
    // tasks that it will try to claim.  Every thread in the parallel task
    // must execute this.  (When the last thread does so, the task array is
    // cleared.)
!   //
!   // n_threads - Number of threads executing the sub-tasks.
!   void all_tasks_completed(uint n_threads);
  
    // Destructor.
    ~SubTasksDone();
  };