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src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/z/ZGranuleMapForPageTable.java

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  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 package sun.jvm.hotspot.gc.z;
  26 
  27 import sun.jvm.hotspot.debugger.Address;
  28 import sun.jvm.hotspot.runtime.VM;
  29 import sun.jvm.hotspot.runtime.VMObject;
  30 import sun.jvm.hotspot.types.AddressField;
  31 import sun.jvm.hotspot.types.Type;
  32 import sun.jvm.hotspot.types.TypeDataBase;
  33 
  34 public class ZAddressRangeMapForPageTable  extends VMObject {
  35     private static AddressField mapField;
  36 
  37     static {
  38         VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase()));
  39     }
  40 
  41     static private synchronized void initialize(TypeDataBase db) {
  42         Type type = db.lookupType("ZAddressRangeMapForPageTable");
  43 
  44         mapField = type.getAddressField("_map");
  45     }
  46 
  47     public ZAddressRangeMapForPageTable(Address addr) {
  48         super(addr);
  49     }
  50 
  51     private Address map() {
  52         return mapField.getValue(addr);
  53     }
  54 
  55     public long size() {
  56         return ZGlobals.ZAddressOffsetMax >> ZGlobals.ZGranuleSizeShift;
  57     }
  58 
  59     private long index_for_addr(Address addr) {
  60         long index = ZAddress.offset(addr) >> ZGlobals.ZGranuleSizeShift;
  61 
  62         return index;
  63     }
  64 
  65     Address at(long index) {
  66         return map().getAddressAt(index * VM.getVM().getBytesPerLong());
  67     }




  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 package sun.jvm.hotspot.gc.z;
  26 
  27 import sun.jvm.hotspot.debugger.Address;
  28 import sun.jvm.hotspot.runtime.VM;
  29 import sun.jvm.hotspot.runtime.VMObject;
  30 import sun.jvm.hotspot.types.AddressField;
  31 import sun.jvm.hotspot.types.Type;
  32 import sun.jvm.hotspot.types.TypeDataBase;
  33 
  34 public class ZGranuleMapForPageTable  extends VMObject {
  35     private static AddressField mapField;
  36 
  37     static {
  38         VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase()));
  39     }
  40 
  41     static private synchronized void initialize(TypeDataBase db) {
  42         Type type = db.lookupType("ZGranuleMapForPageTable");
  43 
  44         mapField = type.getAddressField("_map");
  45     }
  46 
  47     public ZGranuleMapForPageTable(Address addr) {
  48         super(addr);
  49     }
  50 
  51     private Address map() {
  52         return mapField.getValue(addr);
  53     }
  54 
  55     public long size() {
  56         return ZGlobals.ZAddressOffsetMax >> ZGlobals.ZGranuleSizeShift;
  57     }
  58 
  59     private long index_for_addr(Address addr) {
  60         long index = ZAddress.offset(addr) >> ZGlobals.ZGranuleSizeShift;
  61 
  62         return index;
  63     }
  64 
  65     Address at(long index) {
  66         return map().getAddressAt(index * VM.getVM().getBytesPerLong());
  67     }


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