[tomcat] 06/06: Align with 10.1.x - remove unnecessary synchronization

[markt]

This is an automated email from the ASF dual-hosted git repository.

markt pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git

commit 436b5d302c00a1fc797db09681f45a72e1e594aa
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Wed Nov 24 12:25:50 2021 +0000

    Align with 10.1.x - remove unnecessary synchronization
---
 .../catalina/core/DefaultInstanceManager.java      | 42 +++++++++-------------
 1 file changed, 16 insertions(+), 26 deletions(-)

diff --git a/java/org/apache/catalina/core/DefaultInstanceManager.java 
b/java/org/apache/catalina/core/DefaultInstanceManager.java
index ee966de..588c367 100644
--- a/java/org/apache/catalina/core/DefaultInstanceManager.java
+++ b/java/org/apache/catalina/core/DefaultInstanceManager.java
@@ -224,13 +224,11 @@ public class DefaultInstanceManager implements 
InstanceManager {
         AnnotationCacheEntry[] annotations = annotationCache.get(clazz);
         for (AnnotationCacheEntry entry : annotations) {
             if (entry.getType() == AnnotationCacheEntryType.POST_CONSTRUCT) {
+                // This will always return a new Method instance
+                // Making this instance accessible does not affect other 
instances
                 Method postConstruct = getMethod(clazz, entry);
-                synchronized (postConstruct) {
-                    boolean accessibility = postConstruct.isAccessible();
-                    postConstruct.setAccessible(true);
-                    postConstruct.invoke(instance);
-                    postConstruct.setAccessible(accessibility);
-                }
+                postConstruct.setAccessible(true);
+                postConstruct.invoke(instance);
             }
         }
     }
@@ -262,13 +260,11 @@ public class DefaultInstanceManager implements 
InstanceManager {
         }
         for (AnnotationCacheEntry entry : annotations) {
             if (entry.getType() == AnnotationCacheEntryType.PRE_DESTROY) {
+                // This will always return a new Method instance
+                // Making this instance accessible does not affect other 
instances
                 Method preDestroy = getMethod(clazz, entry);
-                synchronized (preDestroy) {
-                    boolean accessibility = preDestroy.isAccessible();
-                    preDestroy.setAccessible(true);
-                    preDestroy.invoke(instance);
-                    preDestroy.setAccessible(accessibility);
-                }
+                preDestroy.setAccessible(true);
+                preDestroy.invoke(instance);
             }
         }
     }
@@ -571,7 +567,6 @@ public class DefaultInstanceManager implements 
InstanceManager {
             throws NamingException, IllegalAccessException {
 
         Object lookedupResource;
-        boolean accessibility;
 
         String normalizedName = normalize(name);
 
@@ -582,12 +577,10 @@ public class DefaultInstanceManager implements 
InstanceManager {
                 context.lookup(clazz.getName() + "/" + field.getName());
         }
 
-        synchronized (field) {
-            accessibility = field.isAccessible();
-            field.setAccessible(true);
-            field.set(instance, lookedupResource);
-            field.setAccessible(accessibility);
-        }
+        // This will always be a new Field instance
+        // Making this instance accessible does not affect other instances
+        field.setAccessible(true);
+        field.set(instance, lookedupResource);
     }
 
     /**
@@ -613,7 +606,6 @@ public class DefaultInstanceManager implements 
InstanceManager {
         }
 
         Object lookedupResource;
-        boolean accessibility;
 
         String normalizedName = normalize(name);
 
@@ -624,12 +616,10 @@ public class DefaultInstanceManager implements 
InstanceManager {
                     clazz.getName() + "/" + 
Introspection.getPropertyName(method));
         }
 
-        synchronized (method) {
-            accessibility = method.isAccessible();
-            method.setAccessible(true);
-            method.invoke(instance, lookedupResource);
-            method.setAccessible(accessibility);
-        }
+        // This will always be a new Method instance
+        // Making this instance accessible does not affect other instances
+        method.setAccessible(true);
+        method.invoke(instance, lookedupResource);
     }
 
     private static void loadProperties(Set<String> classNames, String 
resourceName,

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