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MONITORENTER.java

00001 package gov.nasa.arc.ase.jpf.jvm.bytecode;
00002 
00003 import de.fub.bytecode.classfile.ConstantPool;
00004 import gov.nasa.arc.ase.jpf.jvm.SystemState;
00005 import gov.nasa.arc.ase.jpf.jvm.KernelState;
00006 import gov.nasa.arc.ase.jpf.jvm.ThreadInfo;
00007 import gov.nasa.arc.ase.util.Debug;
00008 
00009 public class MONITORENTER extends Instruction {
00010   public Instruction execute(SystemState ss, KernelState ks, ThreadInfo th) {
00011     int objref = th.pop();
00012 
00013     ks.da.get(objref).lock(th);
00014 
00015     return th.getPC().getNext();
00016   }  
00017   public boolean isExecutable(SystemState ss, KernelState ks, ThreadInfo th) {
00018     return ks.da.get(th.peek()).canLock(th);
00019   }  
00020   public void setPeer(de.fub.bytecode.generic.Instruction i, ConstantPool cp) {
00021   }  
00022 }

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