costin 2002/08/22 10:19:48
Modified: src/main/org/apache/tools/ant Tag: ANT_15_BRANCH
AntClassLoader.java
Log:
Backport the 'synchronized' fix.
Revision Changes Path
No revision
No revision
1.52.2.4 +4 -1
jakarta-ant/src/main/org/apache/tools/ant/AntClassLoader.java
Index: AntClassLoader.java
===================================================================
RCS file:
/home/cvs/jakarta-ant/src/main/org/apache/tools/ant/AntClassLoader.java,v
retrieving revision 1.52.2.3
retrieving revision 1.52.2.4
diff -u -r1.52.2.3 -r1.52.2.4
--- AntClassLoader.java 17 Jun 2002 05:44:54 -0000 1.52.2.3
+++ AntClassLoader.java 22 Aug 2002 17:19:47 -0000 1.52.2.4
@@ -906,8 +906,11 @@
* on the system classpath (when not in isolated mode) or this loader's
* classpath.
*/
- protected Class loadClass(String classname, boolean resolve)
+ protected synchronized Class loadClass(String classname, boolean resolve)
throws ClassNotFoundException {
+ // 'sync' is needed - otherwise 2 threads can load the same class
+ // twice, resulting in LinkageError: duplicated class definition.
+ // findLoadedClass avoids that, but without sync it won't work.
Class theClass = findLoadedClass(classname);
if (theClass != null) {
--
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