132 lines
3.8 KiB
Java
132 lines
3.8 KiB
Java
/*
|
|
* Copyright (c) 2015, 2017, 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. Oracle designates this
|
|
* particular file as subject to the "Classpath" exception as provided
|
|
* by Oracle in the LICENSE file that accompanied this code.
|
|
*
|
|
* 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 java.lang;
|
|
|
|
final class LiveStackFrameInfo extends StackFrameInfo implements LiveStackFrame {
|
|
private static Object[] EMPTY_ARRAY = new Object[0];
|
|
|
|
// These flags must match the values maintained in the VM
|
|
private static final int MODE_INTERPRETED = 0x01;
|
|
private static final int MODE_COMPILED = 0x02;
|
|
|
|
LiveStackFrameInfo(StackWalker walker) {
|
|
super(walker);
|
|
}
|
|
|
|
// These fields are initialized by the VM if ExtendedOption.LOCALS_AND_OPERANDS is set
|
|
private Object[] monitors = EMPTY_ARRAY;
|
|
private Object[] locals = EMPTY_ARRAY;
|
|
private Object[] operands = EMPTY_ARRAY;
|
|
private int mode = 0;
|
|
|
|
@Override
|
|
public Object[] getMonitors() {
|
|
return monitors;
|
|
}
|
|
|
|
@Override
|
|
public Object[] getLocals() {
|
|
return locals;
|
|
}
|
|
|
|
@Override
|
|
public Object[] getStack() {
|
|
return operands;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
StringBuilder retVal = new StringBuilder(super.toString());
|
|
if (mode != 0) {
|
|
retVal.append("(");
|
|
if ((mode & MODE_INTERPRETED) == MODE_INTERPRETED) {
|
|
retVal.append(" interpreted ");
|
|
}
|
|
if ((mode & MODE_COMPILED) == MODE_COMPILED) {
|
|
retVal.append(" compiled ");
|
|
}
|
|
retVal.append(")");
|
|
}
|
|
return retVal.toString();
|
|
}
|
|
|
|
/*
|
|
* Convert primitive value to {@code PrimitiveSlot} object to represent
|
|
* a local variable or an element on the operand stack of primitive type.
|
|
*/
|
|
|
|
static PrimitiveSlot asPrimitive(int value) {
|
|
return new PrimitiveSlot32(value);
|
|
}
|
|
|
|
static PrimitiveSlot asPrimitive(long value) {
|
|
return new PrimitiveSlot64(value);
|
|
}
|
|
|
|
private static class PrimitiveSlot32 extends PrimitiveSlot {
|
|
final int value;
|
|
PrimitiveSlot32(int value) {
|
|
this.value = value;
|
|
}
|
|
|
|
@Override
|
|
public int size() {
|
|
return 4;
|
|
}
|
|
|
|
@Override
|
|
public int intValue() {
|
|
return value;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return String.valueOf(value);
|
|
}
|
|
}
|
|
|
|
private static class PrimitiveSlot64 extends PrimitiveSlot {
|
|
final long value;
|
|
PrimitiveSlot64(long value) {
|
|
this.value = value;
|
|
}
|
|
|
|
@Override
|
|
public int size() {
|
|
return 8;
|
|
}
|
|
|
|
@Override
|
|
public long longValue() {
|
|
return value;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return String.valueOf(value);
|
|
}
|
|
}
|
|
}
|