diff agent/src/share/classes/sun/jvm/hotspot/oops/TypeArrayKlass.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/TypeArrayKlass.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2000-2007 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.*;
+
+// TypeArrayKlass is a proxy for typeArrayKlass in the JVM
+
+public class TypeArrayKlass 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 t             = db.lookupType("typeArrayKlass");
+    maxLength          = new CIntField(t.getCIntegerField("_max_length"), Oop.getHeaderSize());
+  }
+
+  TypeArrayKlass(OopHandle handle, ObjectHeap heap) {
+    super(handle, heap);
+  }
+
+  private static CIntField  maxLength;
+
+  public long getMaxLength()          { return  maxLength.getValue(this); }
+
+  public static final int T_BOOLEAN = 4;
+  public static final int T_CHAR    = 5;
+  public static final int T_FLOAT   = 6;
+  public static final int T_DOUBLE  = 7;
+  public static final int T_BYTE    = 8;
+  public static final int T_SHORT   = 9;
+  public static final int T_INT     = 10;
+  public static final int T_LONG    = 11;
+
+  public String getTypeName() {
+    switch ((int) getElementType()) {
+      case T_BOOLEAN: return "[Z";
+      case T_CHAR:    return "[C";
+      case T_FLOAT:   return "[F";
+      case T_DOUBLE:  return "[D";
+      case T_BYTE:    return "[B";
+      case T_SHORT:   return "[S";
+      case T_INT:     return "[I";
+      case T_LONG:    return "[J";
+    }
+    return "Unknown TypeArray";
+  }
+
+  public String getElementTypeName() {
+    switch ((int) getElementType()) {
+      case T_BOOLEAN: return "boolean";
+      case T_CHAR:    return "char";
+      case T_FLOAT:   return "float";
+      case T_DOUBLE:  return "double";
+      case T_BYTE:    return "byte";
+      case T_SHORT:   return "short";
+      case T_INT:     return "int";
+      case T_LONG:    return "long";
+    }
+    throw new RuntimeException("should not reach here");
+  }
+
+  public void printValueOn(PrintStream tty) {
+    tty.print("TypeArrayKlass for " + getTypeName());
+  }
+
+  public void iterateFields(OopVisitor visitor, boolean doVMFields) {
+    super.iterateFields(visitor, doVMFields);
+    if (doVMFields) {
+      visitor.doCInt(maxLength, true);
+    }
+  }
+
+  public Klass arrayKlassImpl(boolean orNull, int n) {
+    int dimension = (int) getDimension();
+    if (Assert.ASSERTS_ENABLED) {
+      Assert.that(dimension <= n, "check order of chain");
+    }
+    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));
+  }
+}