share/gc/g1/heapRegionManager.hpp

rev 1 : G1GC+POGC+NVDIMM Patch with latest comments incorporated from all.

*** 1,7 ****
  /*
!  * Copyright (c) 2001, 2017, 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.
*** 166,177 ****
    void insert_list_into_free_list(FreeRegionList* list) {
      _free_list.add_ordered(list);
    }
  
    HeapRegion* allocate_free_region(bool is_old) {
!     HeapRegion* hr = _free_list.remove_region(is_old);
! 
      if (hr != NULL) {
        assert(hr->next() == NULL, "Single region should not have next");
        assert(is_available(hr->hrm_index()), "Must be committed");
      }
      return hr;
--- 166,183 ----
    void insert_list_into_free_list(FreeRegionList* list) {
      _free_list.add_ordered(list);
    }
  
    HeapRegion* allocate_free_region(bool is_old) {
!     HeapRegion* hr = NULL;
!     if (os::has_nvdimm() && !is_old) {
!       hr = _free_list.show_tail();
!       if ((address)(hr->top()) < os::dram_heapbase()) {
!         return NULL;
!       }
!     }
!     hr = _free_list.remove_region(is_old);
      if (hr != NULL) {
        assert(hr->next() == NULL, "Single region should not have next");
        assert(is_available(hr->hrm_index()), "Must be committed");
      }
      return hr;