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src/share/vm/oops/objArrayOop.hpp

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  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 #ifndef SHARE_VM_OOPS_OBJARRAYOOP_HPP
  26 #define SHARE_VM_OOPS_OBJARRAYOOP_HPP
  27 
  28 #include "gc/shared/specialized_oop_closures.hpp"
  29 #include "oops/arrayOop.hpp"

  30 
  31 // An objArrayOop is an array containing oops.
  32 // Evaluating "String arg[10]" will create an objArrayOop.
  33 
  34 class objArrayOopDesc : public arrayOopDesc {
  35   friend class ObjArrayKlass;
  36   friend class Runtime1;
  37   friend class psPromotionManager;
  38   friend class CSetMarkOopClosure;
  39   friend class G1ParScanPartialArrayClosure;
  40 
  41   template <class T> T* obj_at_addr(int index) const {
  42     assert(is_within_bounds(index), "index out of bounds");
  43     return &((T*)base())[index];
  44   }
  45 
  46 private:
  47   // Give size of objArrayOop in HeapWords minus the header
  48   static int array_size(int length) {
  49     const uint OopsPerHeapWord = HeapWordSize/heapOopSize;




  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 #ifndef SHARE_VM_OOPS_OBJARRAYOOP_HPP
  26 #define SHARE_VM_OOPS_OBJARRAYOOP_HPP
  27 
  28 #include "gc/shared/specialized_oop_closures.hpp"
  29 #include "oops/arrayOop.hpp"
  30 #include "utilities/align.hpp"
  31 
  32 // An objArrayOop is an array containing oops.
  33 // Evaluating "String arg[10]" will create an objArrayOop.
  34 
  35 class objArrayOopDesc : public arrayOopDesc {
  36   friend class ObjArrayKlass;
  37   friend class Runtime1;
  38   friend class psPromotionManager;
  39   friend class CSetMarkOopClosure;
  40   friend class G1ParScanPartialArrayClosure;
  41 
  42   template <class T> T* obj_at_addr(int index) const {
  43     assert(is_within_bounds(index), "index out of bounds");
  44     return &((T*)base())[index];
  45   }
  46 
  47 private:
  48   // Give size of objArrayOop in HeapWords minus the header
  49   static int array_size(int length) {
  50     const uint OopsPerHeapWord = HeapWordSize/heapOopSize;


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