JDK 11 jdk.hotspot.agent.jmod - Hotspot Agent Module

JDK 11 jdk.hotspot.agent.jmod is the JMOD file for JDK 11 Hotspot Agent module.

JDK 11 Hotspot Agent module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.hotspot.agent.jmod.

JDK 11 Hotspot Agent module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 Hotspot Agent module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.hotspot.agent.

You can click and view the content of each source code file in the list below.

✍: FYIcenter

sun/jvm/hotspot/runtime/ObjectMonitor.java

/*
 * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package sun.jvm.hotspot.runtime;

import java.util.*;

import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.types.*;

public class ObjectMonitor extends VMObject {
  static {
    VM.registerVMInitializedObserver(new Observer() {
        public void update(Observable o, Object data) {
          initialize(VM.getVM().getTypeDataBase());
        }
      });
  }

  private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
    heap = VM.getVM().getObjectHeap();
    Type type  = db.lookupType("ObjectMonitor");
    sun.jvm.hotspot.types.Field f = type.getField("_header");
    headerFieldOffset = f.getOffset();
    f = type.getField("_object");
    objectFieldOffset = f.getOffset();
    f = type.getField("_owner");
    ownerFieldOffset = f.getOffset();
    f = type.getField("FreeNext");
    FreeNextFieldOffset = f.getOffset();
    countField  = type.getJIntField("_count");
    waitersField = type.getJIntField("_waiters");
    recursionsField = type.getCIntegerField("_recursions");
  }

  public ObjectMonitor(Address addr) {
    super(addr);
  }

  public Mark header() {
    return new Mark(addr.addOffsetTo(headerFieldOffset));
  }

  // FIXME
  //  void      set_header(markOop hdr);

  // FIXME: must implement and delegate to platform-dependent implementation
  //  public boolean isBusy();
  public boolean isEntered(sun.jvm.hotspot.runtime.Thread current) {
    Address o = owner();
    if (current.threadObjectAddress().equals(o) ||
        current.isLockOwned(o)) {
      return true;
    }
    return false;
  }

  public Address owner() { return addr.getAddressAt(ownerFieldOffset); }
  // FIXME
  //  void      set_owner(void* owner);

  public int    waiters() { return waitersField.getValue(addr); }

  public Address freeNext() { return addr.getAddressAt(FreeNextFieldOffset); }
  // FIXME
  //  void      set_queue(void* owner);

  public int count() { return countField.getValue(addr); }
  // FIXME
  //  void      set_count(int count);

  public long recursions() { return recursionsField.getValue(addr); }

  public OopHandle object() {
    return addr.getOopHandleAt(objectFieldOffset);
  }

  // contentions is always equal to count
  public int contentions() {
      return count();
  }

  // FIXME
  //  void*     object_addr();
  //  void      set_object(void* obj);

  // The following four either aren't expressed as typed fields in
  // vmStructs.cpp because they aren't strongly typed in the VM, or
  // would confuse the SA's type system.
  private static ObjectHeap    heap;
  private static long          headerFieldOffset;
  private static long          objectFieldOffset;
  private static long          ownerFieldOffset;
  private static long          FreeNextFieldOffset;
  private static JIntField     countField;
  private static JIntField     waitersField;
  private static CIntegerField recursionsField;
  // FIXME: expose platform-dependent stuff
}

sun/jvm/hotspot/runtime/ObjectMonitor.java

 

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