1 /*
   2  * Copyright (c) 2001, 2009, 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 "incls/_precompiled.incl"
  26 # include "incls/_mutableSpace.cpp.incl"






  27 
  28 MutableSpace::MutableSpace(size_t alignment): ImmutableSpace(), _top(NULL), _alignment(alignment) {
  29   assert(MutableSpace::alignment() >= 0 &&
  30          MutableSpace::alignment() % os::vm_page_size() == 0,
  31          "Space should be aligned");
  32   _mangler = new MutableSpaceMangler(this);
  33 }
  34 
  35 MutableSpace::~MutableSpace() {
  36   delete _mangler;
  37 }
  38 
  39 void MutableSpace::numa_setup_pages(MemRegion mr, bool clear_space) {
  40   if (!mr.is_empty()) {
  41     size_t page_size = UseLargePages ? alignment() : os::vm_page_size();
  42     HeapWord *start = (HeapWord*)round_to((intptr_t) mr.start(), page_size);
  43     HeapWord *end =  (HeapWord*)round_down((intptr_t) mr.end(), page_size);
  44     if (end > start) {
  45       size_t size = pointer_delta(end, start, sizeof(char));
  46       if (clear_space) {

   1 /*
   2  * Copyright (c) 2001, 2010, 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 #ifndef SERIALGC
  27 #include "gc_implementation/shared/mutableSpace.hpp"
  28 #include "gc_implementation/shared/spaceDecorator.hpp"
  29 #include "oops/oop.inline.hpp"
  30 #include "runtime/safepoint.hpp"
  31 #include "runtime/thread.hpp"
  32 #endif
  33 
  34 MutableSpace::MutableSpace(size_t alignment): ImmutableSpace(), _top(NULL), _alignment(alignment) {
  35   assert(MutableSpace::alignment() >= 0 &&
  36          MutableSpace::alignment() % os::vm_page_size() == 0,
  37          "Space should be aligned");
  38   _mangler = new MutableSpaceMangler(this);
  39 }
  40 
  41 MutableSpace::~MutableSpace() {
  42   delete _mangler;
  43 }
  44 
  45 void MutableSpace::numa_setup_pages(MemRegion mr, bool clear_space) {
  46   if (!mr.is_empty()) {
  47     size_t page_size = UseLargePages ? alignment() : os::vm_page_size();
  48     HeapWord *start = (HeapWord*)round_to((intptr_t) mr.start(), page_size);
  49     HeapWord *end =  (HeapWord*)round_down((intptr_t) mr.end(), page_size);
  50     if (end > start) {
  51       size_t size = pointer_delta(end, start, sizeof(char));
  52       if (clear_space) {