Cluster-safe assertions.

Assert that replicated data structures are modified in a cluster-safe
context - in cluster delivery thread or during update.  Assertions
added to Queue.cpp and SemanticState.cpp.


git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@901282 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 47 insertions, 0 deletions

diff --git a/cpp/src/qpid/sys/ClusterSafe.cpp b/cpp/src/qpid/sys/ClusterSafe.cpp
new file mode 100644
index 0000000000..498a46d865
--- /dev/null
+++ b/cpp/src/qpid/sys/ClusterSafe.cpp
@@ -0,0 +1,47 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+#include "ClusterSafe.h"
+#include "qpid/log/Statement.h"
+#include "qpid/sys/Thread.h"
+#include <stdlib.h>
+
+namespace qpid {
+namespace sys {
+
+namespace {
+bool inCluster = false;
+QPID_TSS bool inContext = false;
+}
+
+void assertClusterSafe()  {
+    if (inCluster && !inContext) {
+        QPID_LOG(critical, "Modified cluster state outside of cluster context");
+        ::abort();
+    }
+}
+
+ClusterSafeScope::ClusterSafeScope() { inContext = true; }
+ClusterSafeScope::~ClusterSafeScope() { inContext = false; }
+
+void enableClusterSafe() { inCluster = true; }
+
+}} // namespace qpid::sys