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 "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
  27 #include "gc_implementation/parallelScavenge/psPromotionLAB.hpp"
  28 #include "gc_implementation/shared/mutableSpace.hpp"
  29 #include "oops/oop.inline.hpp"
  30 
  31 size_t PSPromotionLAB::filler_header_size;
  32 
  33 // This is the shared initialization code. It sets up the basic pointers,
  34 // and allows enough extra space for a filler object. We call a virtual
  35 // method, "lab_is_valid()" to handle the different asserts the old/young
  36 // labs require.
  37 void PSPromotionLAB::initialize(MemRegion lab) {
  38   assert(lab_is_valid(lab), "Sanity");
  39 
  40   HeapWord* bottom = lab.start();
  41   HeapWord* end    = lab.end();
  42 
  43   set_bottom(bottom);
  44   set_end(end);
  45   set_top(bottom);
  46 
  47   // Initialize after VM starts up because header_size depends on compressed
  48   // oops.

   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 "gc/parallel/parallelScavengeHeap.hpp"
  27 #include "gc/parallel/psPromotionLAB.hpp"
  28 #include "gc/shared/mutableSpace.hpp"
  29 #include "oops/oop.inline.hpp"
  30 
  31 size_t PSPromotionLAB::filler_header_size;
  32 
  33 // This is the shared initialization code. It sets up the basic pointers,
  34 // and allows enough extra space for a filler object. We call a virtual
  35 // method, "lab_is_valid()" to handle the different asserts the old/young
  36 // labs require.
  37 void PSPromotionLAB::initialize(MemRegion lab) {
  38   assert(lab_is_valid(lab), "Sanity");
  39 
  40   HeapWord* bottom = lab.start();
  41   HeapWord* end    = lab.end();
  42 
  43   set_bottom(bottom);
  44   set_end(end);
  45   set_top(bottom);
  46 
  47   // Initialize after VM starts up because header_size depends on compressed
  48   // oops.