src/hotspot/share/gc/g1/g1FromCardCache.cpp

rev 50098 : [mq]: 8202842-g1-footprint-regressions
rev 50099 : [mq]: 8202842-team-review

*** 1,7 ****
  /*
!  * Copyright (c) 2001, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2001, 2018, 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.
*** 45,55 ****
--- 45,57 ----
  #endif
    _cache = Padded2DArray<uintptr_t, mtGC>::create_unfreeable(_max_regions,
                                                               num_par_rem_sets,
                                                               &_static_mem_size);
  
+   if (AlwaysPreTouch) {
      invalidate(0, _max_regions);
+   }
  }
  
  void G1FromCardCache::invalidate(uint start_idx, size_t new_num_regions) {
    guarantee((size_t)start_idx + new_num_regions <= max_uintx,
              "Trying to invalidate beyond maximum region, from %u size " SIZE_FORMAT,