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Merge pull request #15 from cos/cgnode-weakref-ir-defuse 

use WeakReference so that CGNode.getIR() doesn't hit the cache too often
This commit is contained in:
Manu Sridharan 2013-04-08 14:27:50 -07:00
parent 9549da9954 3b48685d1d
commit 0204a7fead
1 changed files with 16 additions and 2 deletions
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18
com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/impl/ExplicitCallGraph.java
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@ -10,6 +10,7 @@
*******************************************************************************/
package com.ibm.wala.ipa.callgraph.impl;
import java.lang.ref.WeakReference;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
@ -140,6 +141,9 @@ public class ExplicitCallGraph extends BasicCallGraph<SSAContextInterpreter> imp
protected final SparseVector<Object> targets = new SparseVector<Object>();
private final MutableSharedBitVectorIntSet allTargets = new MutableSharedBitVectorIntSet();
private WeakReference<IR> ir = new WeakReference<IR>(null);
private WeakReference<DefUse> du = new WeakReference<DefUse>(null);
/**
* @param method
@ -294,11 +298,21 @@ public class ExplicitCallGraph extends BasicCallGraph<SSAContextInterpreter> imp
}
public IR getIR() {
return getCallGraph().getInterpreter(this).getIR(this);
IR ir = this.ir.get();
if (ir == null) {
ir = getCallGraph().getInterpreter(this).getIR(this);
this.ir = new WeakReference<IR>(ir);
}
return ir;
}
public DefUse getDU() {
return getCallGraph().getInterpreter(this).getDU(this);
DefUse du = this.du.get();
if (du == null) {
du = getCallGraph().getInterpreter(this).getDU(this);
this.du = new WeakReference<DefUse>(du);
}
return du;
}
public ExplicitCallGraph getCallGraph() {