2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
6 * The Java Pathfinder core (jpf-core) platform is licensed under the
7 * Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0.
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 package gov.nasa.jpf.jvm.bytecode;
20 import gov.nasa.jpf.vm.Instruction;
21 import gov.nasa.jpf.vm.MJIEnv;
25 * common root for MONITORENTER/EXIT
27 public abstract class LockInstruction extends Instruction implements JVMInstruction {
28 int lastLockRef = MJIEnv.NULL;
31 * only useful post-execution (in an instructionExecuted() notification)
33 public int getLastLockRef () {
38 public String toPostExecString(){
39 StringBuilder sb = new StringBuilder();
40 sb.append(getMnemonic());
42 sb.append( Integer.toHexString(lastLockRef));
48 public void accept(JVMInstructionVisitor insVisitor) {
49 insVisitor.visit(this);