/*

 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. 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.

 *

 *

 */

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.*;

public abstract class ProfileData {

  // This is a pointer to a section of profiling data.

  private DataLayout _data;

  public DataLayout data() { return _data; }

  // How many cells are in this?

  public abstract int cellCount();

  // Return the size of this data.

  public int sizeInBytes() {

    return DataLayout.computeSizeInBytes(cellCount());

  }

  public int dp() {

    return data().dp();

  }

  // Low-level accessors for underlying data

  int intptrAt(int index) {

    //assert(0 <= index && index < cellCount(), "oob");

    return data().cellAt(index);

  }

  int intAt(int index) {

    return (int)intptrAt(index);

  }

  int uintAt(int index) {

    return (int)intptrAt(index);

  }

  public Address addressAt(int index) {

    return data().addressAt(index);

  }

  boolean flagAt(int flagNumber) {

    return data().flagAt(flagNumber);

  }

  // two convenient imports for use by subclasses:

  public static int cellOffset(int index) {

    return DataLayout.cellOffset(index);

  }

  public ProfileData(DataLayout data) {

    _data = data;

  }

  // Constructor for invalid ProfileData.

  ProfileData() {

    _data = null;

  }

  int bci() {

    return data().bci();

  }

  int trapState() {

    return data().trapState();

  }

  public abstract void printDataOn(PrintStream st);

  void tab(PrintStream st) {

    st.print("\t");

  }

  void printShared(PrintStream st, String name) {

    st.print("bci: " + bci());

    // st.fillTo(tabWidthOne);

    st.print(" " +  name + " ");

    tab(st);

    int trap = trapState();

    if (trap != 0) {

      st.print("trap(" + MethodData.formatTrapState(trap) + ") ");

    }

    int flags = data().flags();

    if (flags != 0)

      st.print("flags(" + flags + ") ");

  }

  public String toString() {

    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    PrintStream ps = new PrintStream(baos);

    try {

      printDataOn(ps);

    } finally {

      ps.close();

    }

    return baos.toString();

  }

}