[GitHub] [skywalking] wu-sheng commented on a change in pull request #4325: Close leaked I/O stream and remove unused codes

[GitBox <gi...@apache.org>]

wu-sheng commented on a change in pull request #4325: Close leaked I/O stream and remove unused codes
URL: https://github.com/apache/skywalking/pull/4325#discussion_r376367341
 
 

 ##########
 File path: apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/plugin/loader/AgentClassLoader.java
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 @@ -62,34 +61,22 @@
     private ReentrantLock jarScanLock = new ReentrantLock();
 
     /**
-     * Functional Description: solve the classloader dead lock when jvm start
-     * only support JDK7+, since ParallelCapable appears in JDK7+
+     * Try to solve the classloader dead lock.
+     *
+     * @see <a href="https://github.com/apache/skywalking/pull/2016">#2016</a>
      */
     private static void tryRegisterAsParallelCapable() {
-        Method[] methods = ClassLoader.class.getDeclaredMethods();
-        for (int i = 0; i < methods.length; i++) {
-            Method method = methods[i];
-            String methodName = method.getName();
-            if ("registerAsParallelCapable".equalsIgnoreCase(methodName)) {
-                try {
-                    method.setAccessible(true);
-                    method.invoke(null);
-                } catch (Exception e) {
-                    logger.warn(e, "can not invoke ClassLoader.registerAsParallelCapable()");
-                }
-                return;
-            }
-        }
+        registerAsParallelCapable();
 
 Review comment:
   You should delete this method, and move `registerAsParallelCapable` to the static initial block.

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