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src/share/vm/gc/parallel/mutableSpace.cpp

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  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 "gc/parallel/mutableSpace.hpp"
  27 #include "gc/shared/spaceDecorator.hpp"
  28 #include "oops/oop.inline.hpp"
  29 #include "runtime/atomic.hpp"
  30 #include "runtime/safepoint.hpp"
  31 #include "runtime/thread.hpp"

  32 #include "utilities/macros.hpp"
  33 
  34 MutableSpace::MutableSpace(size_t alignment): ImmutableSpace(), _top(NULL), _alignment(alignment) {
  35   assert(MutableSpace::alignment() % os::vm_page_size() == 0,
  36          "Space should be aligned");
  37   _mangler = new MutableSpaceMangler(this);
  38 }
  39 
  40 MutableSpace::~MutableSpace() {
  41   delete _mangler;
  42 }
  43 
  44 void MutableSpace::numa_setup_pages(MemRegion mr, bool clear_space) {
  45   if (!mr.is_empty()) {
  46     size_t page_size = UseLargePages ? alignment() : os::vm_page_size();
  47     HeapWord *start = align_up(mr.start(), page_size);
  48     HeapWord *end =   align_down(mr.end(), page_size);
  49     if (end > start) {
  50       size_t size = pointer_delta(end, start, sizeof(char));
  51       if (clear_space) {




  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 "gc/parallel/mutableSpace.hpp"
  27 #include "gc/shared/spaceDecorator.hpp"
  28 #include "oops/oop.inline.hpp"
  29 #include "runtime/atomic.hpp"
  30 #include "runtime/safepoint.hpp"
  31 #include "runtime/thread.hpp"
  32 #include "utilities/align.hpp"
  33 #include "utilities/macros.hpp"
  34 
  35 MutableSpace::MutableSpace(size_t alignment): ImmutableSpace(), _top(NULL), _alignment(alignment) {
  36   assert(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 = align_up(mr.start(), page_size);
  49     HeapWord *end =   align_down(mr.end(), page_size);
  50     if (end > start) {
  51       size_t size = pointer_delta(end, start, sizeof(char));
  52       if (clear_space) {


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