diff agent/src/share/classes/sun/jvm/hotspot/oops/ObjArrayKlass.java @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children c18cbe5936b8
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/oops/ObjArrayKlass.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2000-2004 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.oops;
+
+import java.io.*;
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.utilities.*;
+
+// ObjArrayKlass is the klass for ObjArrays
+
+public class ObjArrayKlass extends ArrayKlass {
+  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 {
+    Type type = db.lookupType("objArrayKlass");
+    elementKlass = new OopField(type.getOopField("_element_klass"), Oop.getHeaderSize());
+    bottomKlass  = new OopField(type.getOopField("_bottom_klass"), Oop.getHeaderSize());
+  }
+
+  ObjArrayKlass(OopHandle handle, ObjectHeap heap) {
+    super(handle, heap);
+  }
+
+  private static OopField elementKlass;
+  private static OopField bottomKlass;
+
+  public Klass getElementKlass() { return (Klass) elementKlass.getValue(this); }
+  public Klass getBottomKlass()  { return (Klass) bottomKlass.getValue(this); }
+
+  public long computeModifierFlags() {
+    long elementFlags = getElementKlass().computeModifierFlags();
+    long arrayFlags = 0L;
+    if ((elementFlags & (JVM_ACC_PUBLIC | JVM_ACC_PROTECTED)) != 0) {
+       // The array type is public if the component type is public or protected
+       arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
+    } else {
+       // The array type is private if the component type is private
+       arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL;
+    }
+    return arrayFlags;
+  }
+
+  public void iterateFields(OopVisitor visitor, boolean doVMFields) {
+    super.iterateFields(visitor, doVMFields);
+    if (doVMFields) {
+      visitor.doOop(elementKlass, true);
+      visitor.doOop(bottomKlass, true);
+    }
+  }
+
+  public Klass arrayKlassImpl(boolean orNull, int n) {
+    if (Assert.ASSERTS_ENABLED) {
+      Assert.that(getDimension() <= n, "check order of chain");
+    }
+    int dimension = (int) getDimension();
+    if (dimension == n) {
+      return this;
+    }
+    ObjArrayKlass ak = (ObjArrayKlass) getHigherDimension();
+    if (ak == null) {
+      if (orNull) return null;
+      // FIXME: would need to change in reflective system to actually
+      // allocate klass
+      throw new RuntimeException("Can not allocate array klasses in debugging system");
+    }
+
+    if (orNull) {
+      return ak.arrayKlassOrNull(n);
+    }
+    return ak.arrayKlass(n);
+  }
+
+  public Klass arrayKlassImpl(boolean orNull) {
+    return arrayKlassImpl(orNull, (int) (getDimension() + 1));
+  }
+
+  public void printValueOn(PrintStream tty) {
+    tty.print("ObjArrayKlass for ");
+    getElementKlass().printValueOn(tty);
+  }
+};