| /* |
| * Copyright (c) 2011, 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 jdk.vm.ci.code; |
| |
| /** |
| * Represents a compiled instance of a method. It may have been invalidated or removed in the |
| * meantime. |
| */ |
| public class InstalledCode { |
| |
| /** |
| * Raw address address of entity representing this installed code. |
| */ |
| protected long address; |
| |
| /** |
| * Raw address of entryPoint of this installed code. |
| */ |
| protected long entryPoint; |
| |
| /** |
| * Counts how often the address field was reassigned. |
| */ |
| protected long version; |
| |
| protected final String name; |
| |
| public InstalledCode(String name) { |
| this.name = name; |
| } |
| |
| /** |
| * @return the address of entity representing this installed code. |
| */ |
| public final long getAddress() { |
| return address; |
| } |
| |
| /** |
| * @return the address of the normal entry point of the installed code. |
| */ |
| public final long getEntryPoint() { |
| return entryPoint; |
| } |
| |
| /** |
| * @return the version number of this installed code |
| */ |
| public final long getVersion() { |
| return version; |
| } |
| |
| /** |
| * Returns the name of this installed code. |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Returns the start address of this installed code if it is {@linkplain #isValid() valid}, 0 |
| * otherwise. |
| */ |
| public long getStart() { |
| return 0; |
| } |
| |
| /** |
| * @return true if the code represented by this object is still valid for invocation, false |
| * otherwise (may happen due to deopt, etc.) |
| */ |
| public boolean isValid() { |
| return entryPoint != 0; |
| } |
| |
| /** |
| * @return true if the code represented by this object still exists and might have live |
| * activations, false otherwise (may happen due to deopt, etc.) |
| */ |
| public boolean isAlive() { |
| return address != 0; |
| } |
| |
| /** |
| * Returns a copy of this installed code if it is {@linkplain #isValid() valid}, null otherwise. |
| */ |
| public byte[] getCode() { |
| return null; |
| } |
| |
| /** |
| * Invalidates this installed code such that any subsequent |
| * {@linkplain #executeVarargs(Object...) invocation} will throw an |
| * {@link InvalidInstalledCodeException} and all existing invocations will be deoptimized. |
| */ |
| public void invalidate() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| /** |
| * Executes the installed code with a variable number of arguments. |
| * |
| * @param args the array of object arguments |
| * @return the value returned by the executed code |
| */ |
| @SuppressWarnings("unused") |
| public Object executeVarargs(Object... args) throws InvalidInstalledCodeException { |
| throw new UnsupportedOperationException(); |
| } |
| } |