Bug 6859 - Binding generator v1 refactoring

[controller.git] / opendaylight / config / config-manager / src / main / java / org / opendaylight / controller / config / manager / impl / DeadlockMonitor.java

diff --git a/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/DeadlockMonitor.java b/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/DeadlockMonitor.java
index f25dce89e8f536e84e979b9aaee6887d28236a1d..20e5fe658411f2b694885496b948217a4e59ef48 100644 (file)
--- a/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/DeadlockMonitor.java
+++ b/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/DeadlockMonitor.java
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
 package org.opendaylight.controller.config.manager.impl;
 
 import java.util.Deque;
@@ -19,7 +27,7 @@ public class DeadlockMonitor implements AutoCloseable {
     @GuardedBy("this")
     private final Deque<ModuleIdentifierWithNanos> moduleIdentifierWithNanosStack = new LinkedList<>();
     @GuardedBy("this")
-    private ModuleIdentifierWithNanos top = ModuleIdentifierWithNanos.EMPTY;
+    private ModuleIdentifierWithNanos top = ModuleIdentifierWithNanos.empty;
 
     public DeadlockMonitor(TransactionIdentifier transactionIdentifier) {
         this.transactionIdentifier = transactionIdentifier;
@@ -33,7 +41,7 @@ public class DeadlockMonitor implements AutoCloseable {
         if (popping) {
             moduleIdentifierWithNanosStack.pop();
             if (moduleIdentifierWithNanosStack.isEmpty()) {
-                top = ModuleIdentifierWithNanos.EMPTY;
+                top = ModuleIdentifierWithNanos.empty;
             } else {
                 top = moduleIdentifierWithNanosStack.peekLast();
             }
@@ -67,10 +75,15 @@ public class DeadlockMonitor implements AutoCloseable {
 
         @Override
         public void run() {
-            ModuleIdentifierWithNanos old = new ModuleIdentifierWithNanos(); // null moduleId
-            while (this.isInterrupted() == false) {
-                ModuleIdentifierWithNanos copy = new ModuleIdentifierWithNanos(DeadlockMonitor.this.top);
-                if (old.moduleIdentifier == null || old.equals(copy) == false) {
+            // null moduleId
+            ModuleIdentifierWithNanos old = new ModuleIdentifierWithNanos();
+            while (!this.isInterrupted()) {
+                ModuleIdentifierWithNanos copy;
+                synchronized(this) {
+                    copy = new ModuleIdentifierWithNanos(DeadlockMonitor.this.top);
+                }
+
+                if (old.moduleIdentifier == null || !old.equals(copy)) {
                     // started
                     old = copy;
                 } else {
@@ -81,7 +94,7 @@ public class DeadlockMonitor implements AutoCloseable {
                     }
                 }
                 try {
-                    sleep(1000);
+                    sleep(WARN_AFTER_MILLIS);
                 } catch (InterruptedException e) {
                     interrupt();
                 }
@@ -95,11 +108,8 @@ public class DeadlockMonitor implements AutoCloseable {
         }
     }
 
-
-
-
     private static class ModuleIdentifierWithNanos {
-        private static ModuleIdentifierWithNanos EMPTY = new ModuleIdentifierWithNanos();
+        private static ModuleIdentifierWithNanos empty = new ModuleIdentifierWithNanos();
         @Nullable
         private final ModuleIdentifier moduleIdentifier;