src/share/vm/gc/shared/adaptiveSizePolicy.cpp

rev 11036 : 6858051: Create GC worker threads dynamically
Reviewed-by:

*** 1,7 ****
  /*
!  * Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2004, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 128,141 ****
        MAX2((size_t) 2U, Universe::heap()->capacity() / HeapSizePerGCThread);
  
    uintx max_active_workers =
      MAX2(active_workers_by_JT, active_workers_by_heap_size);
  
!   // Limit the number of workers to the the number created,
!   // (workers()).
!   new_active_workers = MIN2(max_active_workers,
!                                 (uintx) total_workers);
  
    // Increase GC workers instantly but decrease them more
    // slowly.
    if (new_active_workers < prev_active_workers) {
      new_active_workers =
--- 128,138 ----
        MAX2((size_t) 2U, Universe::heap()->capacity() / HeapSizePerGCThread);
  
    uintx max_active_workers =
      MAX2(active_workers_by_JT, active_workers_by_heap_size);
  
!   new_active_workers = MIN2(max_active_workers, (uintx) total_workers);
  
    // Increase GC workers instantly but decrease them more
    // slowly.
    if (new_active_workers < prev_active_workers) {
      new_active_workers =