1 /*
   2  * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "utilities/macros.hpp"
  27 #if INCLUDE_ALL_GCS
  28 #include "gc_implementation/shared/immutableSpace.hpp"
  29 #include "memory/universe.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #endif // INCLUDE_ALL_GCS
  32 
  33 void ImmutableSpace::initialize(MemRegion mr) {
  34   HeapWord* bottom = mr.start();
  35   HeapWord* end    = mr.end();
  36 
  37   assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end),
  38          "invalid space boundaries");
  39 
  40   _bottom = bottom;
  41   _end = end;
  42 }
  43 
  44 void ImmutableSpace::oop_iterate(ExtendedOopClosure* cl) {
  45   HeapWord* obj_addr = bottom();
  46   HeapWord* t = end();
  47   // Could call objects iterate, but this is easier.
  48   while (obj_addr < t) {

   1 /*
   2  * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "utilities/macros.hpp"
  27 #if INCLUDE_ALL_GCS
  28 #include "gc/shared/immutableSpace.hpp"
  29 #include "memory/universe.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #endif // INCLUDE_ALL_GCS
  32 
  33 void ImmutableSpace::initialize(MemRegion mr) {
  34   HeapWord* bottom = mr.start();
  35   HeapWord* end    = mr.end();
  36 
  37   assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end),
  38          "invalid space boundaries");
  39 
  40   _bottom = bottom;
  41   _end = end;
  42 }
  43 
  44 void ImmutableSpace::oop_iterate(ExtendedOopClosure* cl) {
  45   HeapWord* obj_addr = bottom();
  46   HeapWord* t = end();
  47   // Could call objects iterate, but this is easier.
  48   while (obj_addr < t) {