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Java > Open Source Codes > soot > jimple > toolkits > pointer > nativemethods > JavaLangRuntimeNative


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2003 Feng Qian
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */
19
20 /**
21  * Simulates the native method side effects in class java.lang.Runtime
22  *
23  * @author Feng Qian
24  * @author <XXX>
25  */
26
27 package soot.jimple.toolkits.pointer.nativemethods;
28
29 import soot.*;
30 import soot.jimple.toolkits.pointer.representations.*;
31 import soot.jimple.toolkits.pointer.util.*;
32
33 public class JavaLangRuntimeNative extends NativeMethodClass {
34     public JavaLangRuntimeNative( NativeHelper helper ) { super(helper); }
35
36   /**
37    * Implements the abstract method simulateMethod.
38    * It distributes the request to the corresponding methods
39    * by signatures.
40    */
41   public void simulateMethod(SootMethod method,
42                  ReferenceVariable thisVar,
43                  ReferenceVariable returnVar,
44                  ReferenceVariable params[]){
45
46     String JavaDoc subSignature = method.getSubSignature();
47
48     if (subSignature.equals("java.lang.Process execInternal(java.lang.String[],java.lang.String[],java.lang.String)")) {
49       java_lang_Runtime_execInternal(method, thisVar, returnVar, params);
50       return;
51
52     } else {
53       defaultMethod(method, thisVar, returnVar, params);
54       return;
55     }
56   }
57
58   /************************ java.lang.Runtime *********************/
59   /**
60    * execInternal is called by all exec method.
61    * It return a Process object.
62    *
63    * NOTE: creates a Process object.
64    *
65    * private native
66    * java.lang.Process execInternal(java.lang.String[],
67    * java.lang.String[],
68    * java.lang.String)
69    * throws java.io.IOException;
70    */
71   public
72     void java_lang_Runtime_execInternal(SootMethod method,
73                     ReferenceVariable thisVar,
74                     ReferenceVariable returnVar,
75                     ReferenceVariable params[]){
76     helper.assignObjectTo(returnVar, Environment.v().getProcessObject());
77   }
78
79   /**
80    * Following methods have NO side effects.
81    *
82    * public native long freeMemory();
83    * public native long totalMemory();
84    * public native void gc();
85    * private static native void runFinalization0();
86    * public native void traceInstructions(boolean);
87    * public native void traceMethodCalls(boolean);
88    */
89 }
90
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