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diff agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java @ 989:148e5441d916

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6863023: need non-perm oops in code cache for JSR 292 Summary: Make a special root-list for those few nmethods which might contain non-perm oops. Reviewed-by: twisti, kvn, never, jmasa, ysr
author jrose
date Tue, 15 Sep 2009 21:53:47 -0700
parents a61af66fc99e
children 873ec3787992
line wrap: on
line diff
--- a/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Tue Sep 15 11:09:34 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Tue Sep 15 21:53:47 2009 -0700
@@ -33,6 +33,7 @@
 
 public class CodeCache {
   private static AddressField       heapField;
+  private static AddressField       scavengeRootNMethodsField;
   private static VirtualConstructor virtualConstructor;
 
   private CodeHeap heap;
@@ -49,6 +50,7 @@
     Type type = db.lookupType("CodeCache");
 
     heapField = type.getAddressField("_heap");
+    scavengeRootNMethodsField = type.getAddressField("_scavenge_root_nmethods");
 
     virtualConstructor = new VirtualConstructor(db);
     // Add mappings for all possible CodeBlob subclasses
@@ -67,6 +69,10 @@
     heap = (CodeHeap) VMObjectFactory.newObject(CodeHeap.class, heapField.getValue());
   }
 
+  public NMethod scavengeRootMethods() {
+    return (NMethod) VMObjectFactory.newObject(NMethod.class, scavengeRootNMethodsField.getValue());
+  }
+
   public boolean contains(Address p) {
     return getHeap().contains(p);
   }