From 4afa356104af67957a2353d0adaf8373f518b46d Mon Sep 17 00:00:00 2001
From: aclement <aclement>
Date: Wed, 29 Apr 2009 00:56:32 +0000
Subject: [PATCH] 271840: deadlock in ltw with terracotta

---
 .../src/org/aspectj/weaver/loadtime/Aj.java   | 30 ++++++++++---------
 .../loadtime/ClassLoaderWeavingAdaptor.java   |  5 ++--
 2 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/loadtime/src/org/aspectj/weaver/loadtime/Aj.java b/loadtime/src/org/aspectj/weaver/loadtime/Aj.java
index 668622589..db5337e38 100644
--- a/loadtime/src/org/aspectj/weaver/loadtime/Aj.java
+++ b/loadtime/src/org/aspectj/weaver/loadtime/Aj.java
@@ -63,6 +63,8 @@ public class Aj implements ClassPreProcessor {
 
 	}
 
+	private final static String deleLoader = "sun.reflect.DelegatingClassLoader";
+
 	/**
 	 * Weave
 	 * 
@@ -72,10 +74,9 @@ public class Aj implements ClassPreProcessor {
 	 * @return weaved bytes
 	 */
 	public byte[] preProcess(String className, byte[] bytes, ClassLoader loader) {
-
 		// TODO AV needs to doc that
-		if (loader == null || className == null) {
-			// skip boot loader or null classes (hibernate)
+		if (loader == null || className == null || loader.getClass().getName().equals(deleLoader)) {
+			// skip boot loader, null classes (hibernate), or those from a reflection loader
 			return bytes;
 		}
 
@@ -220,6 +221,11 @@ public class Aj implements ClassPreProcessor {
 		}
 	}
 
+	static {
+		// pr271840 - touch the types early and outside the locks
+		new ExplicitlyInitializedClassLoaderWeavingAdaptor(new ClassLoaderWeavingAdaptor());
+	}
+
 	/**
 	 * Cache of weaver There is one weaver per classloader
 	 */
@@ -231,21 +237,17 @@ public class Aj implements ClassPreProcessor {
 			ExplicitlyInitializedClassLoaderWeavingAdaptor adaptor = null;
 			AdaptorKey adaptorKey = new AdaptorKey(loader);
 
+			String loaderClassName = loader.getClass().getName();
+
 			synchronized (weavingAdaptors) {
 				checkQ();
 				adaptor = (ExplicitlyInitializedClassLoaderWeavingAdaptor) weavingAdaptors.get(adaptorKey);
 				if (adaptor == null) {
-					String loaderClassName = loader.getClass().getName();
-					if (loaderClassName.equals("sun.reflect.DelegatingClassLoader")) {
-						// we don't weave reflection generated types at all!
-						return null;
-					} else {
-						// create it and put it back in the weavingAdaptors map but avoid any kind of instantiation
-						// within the synchronized block
-						ClassLoaderWeavingAdaptor weavingAdaptor = new ClassLoaderWeavingAdaptor();
-						adaptor = new ExplicitlyInitializedClassLoaderWeavingAdaptor(weavingAdaptor);
-						weavingAdaptors.put(adaptorKey, adaptor);
-					}
+					// create it and put it back in the weavingAdaptors map but avoid any kind of instantiation
+					// within the synchronized block
+					ClassLoaderWeavingAdaptor weavingAdaptor = new ClassLoaderWeavingAdaptor();
+					adaptor = new ExplicitlyInitializedClassLoaderWeavingAdaptor(weavingAdaptor);
+					weavingAdaptors.put(adaptorKey, adaptor);
 				}
 			}
 			// perform the initialization
diff --git a/loadtime/src/org/aspectj/weaver/loadtime/ClassLoaderWeavingAdaptor.java b/loadtime/src/org/aspectj/weaver/loadtime/ClassLoaderWeavingAdaptor.java
index f821cb224..b4824c83c 100644
--- a/loadtime/src/org/aspectj/weaver/loadtime/ClassLoaderWeavingAdaptor.java
+++ b/loadtime/src/org/aspectj/weaver/loadtime/ClassLoaderWeavingAdaptor.java
@@ -37,10 +37,10 @@ import org.aspectj.weaver.ResolvedType;
 import org.aspectj.weaver.UnresolvedType;
 import org.aspectj.weaver.World;
 import org.aspectj.weaver.Lint.Kind;
+import org.aspectj.weaver.bcel.BcelWeakClassLoaderReference;
 import org.aspectj.weaver.bcel.BcelWeaver;
 import org.aspectj.weaver.bcel.BcelWorld;
 import org.aspectj.weaver.bcel.Utility;
-import org.aspectj.weaver.bcel.BcelWeakClassLoaderReference;
 import org.aspectj.weaver.loadtime.definition.Definition;
 import org.aspectj.weaver.loadtime.definition.DocumentParser;
 import org.aspectj.weaver.ltw.LTWWorld;
@@ -741,12 +741,11 @@ public class ClassLoaderWeavingAdaptor extends WeavingAdaptor {
 			return super.getDumpDir();
 		}
 	}
-	
+
 	/*
 	 * shared classes methods
 	 */
 
-
 	/**
 	 * @return Returns the key.
 	 */
-- 
2.39.5