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annotate src/main/gov/nasa/jpf/jvm/bytecode/EXECUTENATIVE.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.jvm.bytecode;
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20
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21 import gov.nasa.jpf.vm.Instruction;
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22 import gov.nasa.jpf.vm.MethodInfo;
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23 import gov.nasa.jpf.vm.NativeMethodInfo;
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24 import gov.nasa.jpf.vm.ThreadInfo;
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25
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26 import java.lang.reflect.Method;
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27
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28 /**
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29 * this is a synthetic instruction to (re-)execute native methods
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30 *
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31 * Note that StackFrame and lock handling has to occur from within
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32 * the corresponding NativeMethodInfo
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33 */
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34 public class EXECUTENATIVE extends Instruction implements JVMInstruction {
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35
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36 // unfortunately we can't null this in cleanupTransients(), but it is
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37 // a potential leak for stored traces
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38 protected NativeMethodInfo executedMethod;
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39
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40 @Override
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41 public boolean isExtendedInstruction() {
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42 return true;
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43 }
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44
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45 public static final int OPCODE = 259;
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46
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47 @Override
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48 public int getByteCode () {
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49 return OPCODE;
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50 }
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51
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52 public EXECUTENATIVE (){}
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53
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54 public EXECUTENATIVE (NativeMethodInfo mi){
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55 executedMethod = mi;
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56 }
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57
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58 public void setExecutedMethod (NativeMethodInfo mi){
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59 executedMethod = mi;
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60 }
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61
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62 @Override
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63 public void accept(JVMInstructionVisitor insVisitor) {
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64 insVisitor.visit(this);
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65 }
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66
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67 @Override
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68 public Instruction execute (ThreadInfo ti) {
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69
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70 // we don't have to enter/leave or push/pop a frame, that's all done
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71 // in NativeMethodInfo.execute()
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72 // !! don't re-enter if this is reexecuted !!
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73 return executedMethod.executeNative(ti);
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74 }
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75
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76 public MethodInfo getExecutedMethod() {
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77 return executedMethod;
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78 }
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79
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80 public String getExecutedMethodName(){
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81 return executedMethod.getName();
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82 }
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83
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84 @Override
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85 public String toString() {
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86 StringBuilder sb = new StringBuilder();
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87 sb.append("executenative");
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88
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89 if (executedMethod != null){
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90 Method m = executedMethod.getMethod();
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91 sb.append(' ');
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92 sb.append( m.getDeclaringClass().getSimpleName());
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93 sb.append('.');
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94 sb.append( m.getName());
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95 }
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96
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97 return sb.toString();
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98 }
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99 }