qpid/cpp/src/qpid/client/Bounds.h

#ifndef QPID_CLIENT_BOUNDSCHECKING_H
#define QPID_CLIENT_BOUNDSCHECKING_H
/*
 *
 * 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 "qpid/sys/Waitable.h"
#include "qpid/client/ClientImportExport.h"

namespace qpid{
namespace client{

class QPID_CLIENT_CLASS_EXTERN Bounds
{
  public:
    Bounds(size_t maxSize);
    bool expand(size_t, bool block);
    void reduce(size_t);
    size_t getCurrentSize();
    void setException(const sys::ExceptionHolder&);

  private:
    friend std::ostream& operator<<(std::ostream&, const Bounds&);
    sys::Waitable lock;
    const size_t max;
    size_t current;
};

std::ostream& operator<<(std::ostream&, const Bounds&);


}}

#endif