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.listener;
20 import gov.nasa.jpf.ListenerAdapter;
21 import gov.nasa.jpf.jvm.bytecode.JVMInvokeInstruction;
22 import gov.nasa.jpf.vm.ClassInfo;
23 import gov.nasa.jpf.vm.Instruction;
24 import gov.nasa.jpf.vm.VM;
25 import gov.nasa.jpf.vm.MethodInfo;
26 import gov.nasa.jpf.vm.ThreadInfo;
29 * this isn't yet a useful tool, but it shows how to track method calls with
30 * their corresponding argument values
32 public class CallMonitor extends ListenerAdapter {
35 public void instructionExecuted (VM vm, ThreadInfo ti, Instruction nextInsn, Instruction executedInsn) {
37 if (executedInsn instanceof JVMInvokeInstruction) {
38 if (executedInsn.isCompleted(ti) && !ti.isInstructionSkipped()) {
39 JVMInvokeInstruction call = (JVMInvokeInstruction)executedInsn;
40 MethodInfo mi = call.getInvokedMethod();
41 Object[] args = call.getArgumentValues(ti);
42 ClassInfo ci = mi.getClassInfo();
44 StringBuilder sb = new StringBuilder();
46 sb.append(ti.getId());
49 int d = ti.getStackDepth();
50 for (int i=0; i<d; i++){
55 sb.append(ci.getName());
58 sb.append(mi.getName());
61 int n = args.length-1;
62 for (int i=0; i<=n; i++) {
63 if (args[i] != null) {
64 sb.append(args[i].toString());
74 System.out.println(sb);