view agent/src/share/classes/sun/jvm/hotspot/jdi/ArrayReferenceImpl.java @ 17716:cdb71841f4bc

6498581: ThreadInterruptTest3 produces wrong output on Windows Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set. Reviewed-by: acorn, kvn Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com
author minqi
date Wed, 26 Feb 2014 15:20:41 -0800
parents c18cbe5936b8
children
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/*
 * Copyright (c) 2002, 2004, 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

package sun.jvm.hotspot.jdi;

import com.sun.jdi.*;

import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;

import sun.jvm.hotspot.oops.Instance;
import sun.jvm.hotspot.oops.Array;
import sun.jvm.hotspot.runtime.BasicType;
import sun.jvm.hotspot.utilities.Assert;

public class ArrayReferenceImpl extends ObjectReferenceImpl
    implements ArrayReference
{
    private int length;
    ArrayReferenceImpl(VirtualMachine aVm, sun.jvm.hotspot.oops.Array aRef) {
        super(aVm, aRef);
        length = (int) aRef.getLength();
    }

    ArrayTypeImpl arrayType() {
        return (ArrayTypeImpl)type();
    }

    /**
     * Return array length.
     */
    public int length() {
        return length;
    }

    public Value getValue(int index) {
        List list = getValues(index, 1);
        return (Value)list.get(0);
    }

    public List getValues() {
        return getValues(0, -1);
    }

    /**
     * Validate that the range to set/get is valid.
     * length of -1 (meaning rest of array) has been converted
     * before entry.
     */
    private void validateArrayAccess(int index, int len) {
        // because length can be computed from index,
        // index must be tested first for correct error message
        if ((index < 0) || (index > length())) {
            throw new IndexOutOfBoundsException(
                        "Invalid array index: " + index);
        }
        if (len < 0) {
            throw new IndexOutOfBoundsException(
                        "Invalid array range length: " + len);
        }
        if (index + len > length()) {
            throw new IndexOutOfBoundsException(
                        "Invalid array range: " +
                        index + " to " + (index + len - 1));
        }
    }

    public List getValues(int index, int len) {
        if (len == -1) { // -1 means the rest of the array
           len = length() - index;
        }
        validateArrayAccess(index, len);
        List vals = new ArrayList();
        if (len == 0) {
            return vals;
        }

        sun.jvm.hotspot.oops.TypeArray typeArray = null;
        sun.jvm.hotspot.oops.ObjArray objArray = null;
        if (ref() instanceof sun.jvm.hotspot.oops.TypeArray) {
            typeArray = (sun.jvm.hotspot.oops.TypeArray)ref();
        } else if (ref() instanceof sun.jvm.hotspot.oops.ObjArray) {
            objArray = (sun.jvm.hotspot.oops.ObjArray)ref();
        } else {
            throw new RuntimeException("should not reach here");
        }

        char c = arrayType().componentSignature().charAt(0);
        BasicType variableType = BasicType.charToBasicType(c);

        final int limit = index + len;
        for (int ii = index; ii < limit; ii++) {
            ValueImpl valueImpl;
            if (variableType == BasicType.T_BOOLEAN) {
                valueImpl = (BooleanValueImpl) vm.mirrorOf(typeArray.getBooleanAt(ii));
            } else if (variableType == BasicType.T_CHAR) {
                valueImpl = (CharValueImpl) vm.mirrorOf(typeArray.getCharAt(ii));
            } else if (variableType == BasicType.T_FLOAT) {
                valueImpl = (FloatValueImpl) vm.mirrorOf(typeArray.getFloatAt(ii));
            } else if (variableType == BasicType.T_DOUBLE) {
                valueImpl =  (DoubleValueImpl) vm.mirrorOf(typeArray.getDoubleAt(ii));
            } else if (variableType == BasicType.T_BYTE) {
                valueImpl =  (ByteValueImpl) vm.mirrorOf(typeArray.getByteAt(ii));
            } else if (variableType == BasicType.T_SHORT) {
                valueImpl =  (ShortValueImpl) vm.mirrorOf(typeArray.getShortAt(ii));
            } else if (variableType == BasicType.T_INT) {
                valueImpl =  (IntegerValueImpl) vm.mirrorOf(typeArray.getIntAt(ii));
            } else if (variableType == BasicType.T_LONG) {
                valueImpl =  (LongValueImpl) vm.mirrorOf(typeArray.getLongAt(ii));
            } else if (variableType == BasicType.T_OBJECT) {
                // we may have an [Ljava/lang/Object; - i.e., Object[] with the
                // elements themselves may be arrays because every array is an Object.
                valueImpl = (ObjectReferenceImpl) vm.objectMirror(objArray.getObjAt(ii));
            } else if (variableType == BasicType.T_ARRAY) {
                valueImpl = (ArrayReferenceImpl) vm.arrayMirror((Array) objArray.getObjAt(ii));
            } else {
                throw new RuntimeException("should not reach here");
            }
            vals.add (valueImpl);
        }
        return vals;
    }

    public void setValue(int index, Value value)
            throws InvalidTypeException,
                   ClassNotLoadedException {
        vm.throwNotReadOnlyException("ArrayReference.setValue(...)");
    }

    public void setValues(List values)
            throws InvalidTypeException,
                   ClassNotLoadedException {
        setValues(0, values, 0, -1);
    }

    public void setValues(int index, List values,
                          int srcIndex, int length)
            throws InvalidTypeException,
                   ClassNotLoadedException {

        vm.throwNotReadOnlyException("ArrayReference.setValue(...)");

    }

    public String toString() {
        return "instance of " + arrayType().componentTypeName() +
               "[" + length() + "] (id=" + uniqueID() + ")";
    }
}