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comparison src/peers/gov/nasa/jpf/vm/JPF_gov_nasa_jpf_test_MemoryGoal.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 /*
2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
4 * All rights reserved.
5 *
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
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0.
11 *
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.
17 */
18
19 package gov.nasa.jpf.vm;
20
21 import gov.nasa.jpf.ListenerAdapter;
22 import gov.nasa.jpf.annotation.MJI;
23 import gov.nasa.jpf.jvm.bytecode.JVMReturnInstruction;
24 import gov.nasa.jpf.vm.ElementInfo;
25 import gov.nasa.jpf.vm.Instruction;
26 import gov.nasa.jpf.vm.VM;
27 import gov.nasa.jpf.vm.MJIEnv;
28 import gov.nasa.jpf.vm.MethodInfo;
29 import gov.nasa.jpf.vm.NativePeer;
30
31 /**
32 * native peer for MemoryGoal tests
33 */
34 public class JPF_gov_nasa_jpf_test_MemoryGoal extends NativePeer {
35
36 Listener listener;
37
38 // <2do> that's too simple, because we should only measure what is
39 // allocated from the invoked method, not the MethodTester. Needs a listener
40
41 static class Listener extends ListenerAdapter {
42
43 MethodInfo mi;
44 boolean active;
45
46 long nAllocBytes;
47 long nFreeBytes;
48 long nAlloc;
49 long nFree;
50
51 Listener (MethodInfo mi){
52 this.mi = mi;
53 }
54
55 @Override
56 public void objectCreated (VM vm, ThreadInfo ti, ElementInfo ei){
57 if (active){
58 nAlloc++;
59 nAllocBytes += ei.getHeapSize(); // just an approximation
60 }
61 }
62
63 @Override
64 public void objectReleased (VM vm, ThreadInfo ti, ElementInfo ei){
65 if (active){
66 nFree++;
67 nFreeBytes += ei.getHeapSize(); // just an approximation
68 }
69 }
70
71 @Override
72 public void instructionExecuted (VM vm, ThreadInfo ti, Instruction nextInsn, Instruction executedInsn){
73 if (!active) {
74 if (executedInsn.getMethodInfo() == mi){
75 active = true;
76 }
77 } else {
78 if ((executedInsn instanceof JVMReturnInstruction) && (executedInsn.getMethodInfo() == mi)){
79 active = false;
80 }
81 }
82 }
83
84 long totalAllocBytes() {
85 return nAllocBytes - nFreeBytes;
86 }
87 }
88
89 @MJI
90 public boolean preCheck__Lgov_nasa_jpf_test_TestContext_2Ljava_lang_reflect_Method_2__Z
91 (MJIEnv env, int objRef, int testContextRef, int methodRef){
92 MethodInfo mi = JPF_java_lang_reflect_Method.getMethodInfo(env, methodRef);
93
94 listener = new Listener(mi);
95 env.addListener(listener);
96 return true;
97 }
98
99 // what a terrible name!
100 @MJI
101 public boolean postCheck__Lgov_nasa_jpf_test_TestContext_2Ljava_lang_reflect_Method_2Ljava_lang_Object_2Ljava_lang_Throwable_2__Z
102 (MJIEnv env, int objRef, int testContextRef, int methdRef, int resultRef, int exRef){
103
104 long nMax = env.getLongField(objRef, "maxGrowth");
105
106 Listener l = listener;
107 env.removeListener(l);
108 listener = null;
109
110 return (l.totalAllocBytes() <= nMax);
111 }
112 }