cpp/src/qpid/sys/ClusterSafe.cpp

/*
 *
 * 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
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 */

#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;
}

bool isClusterSafe() { return !inCluster || inContext; }

void assertClusterSafe()  {
    if (!isClusterSafe()) {
        QPID_LOG(critical, "Modified cluster state outside of cluster context");
        ::abort();
    }
}

ClusterSafeScope::ClusterSafeScope()  {
    save = inContext;
    inContext = true;
}

ClusterSafeScope::~ClusterSafeScope() {
    assert(inContext);
    inContext = save;
}

ClusterUnsafeScope::ClusterUnsafeScope()  {
    save = inContext;
    inContext = false;
}

ClusterUnsafeScope::~ClusterUnsafeScope() {
    assert(!inContext);
    inContext = save;
}

void enableClusterSafe() { inCluster = true; }

}} // namespace qpid::sys