/usr/include/qpid/sys/ConnectionOutputHandlerPtr.h is in libqpidcommon2-dev 0.16-7ubuntu5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | #ifndef QPID_SYS_CONNECTIONOUTPUTHANDLERPTR_H
#define QPID_SYS_CONNECTIONOUTPUTHANDLERPTR_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/ConnectionOutputHandler.h"
namespace qpid {
namespace sys {
/**
 * A ConnectionOutputHandler that delegates to another
 * ConnectionOutputHandler.  Allows the "real" ConnectionOutputHandler
 * to be changed without updating all the pointers/references
 * using the ConnectionOutputHandlerPtr
 */
class ConnectionOutputHandlerPtr : public ConnectionOutputHandler
{
  public:
    ConnectionOutputHandlerPtr(ConnectionOutputHandler* p) : next(p) { assert(next); }
    void set(ConnectionOutputHandler* p) { next = p; assert(next); }
    ConnectionOutputHandler* get() { return next; }
    const ConnectionOutputHandler* get() const { return next; }
    void close() { next->close(); }
    size_t getBuffered() const { return next->getBuffered(); }
    void abort() { next->abort(); }
    void activateOutput() { next->activateOutput(); }
    void giveReadCredit(int32_t credit) { next->giveReadCredit(credit); }
    void send(framing::AMQFrame& f) { next->send(f); }
  private:
    ConnectionOutputHandler* next;
};
}} // namespace qpid::sys
#endif  /*!QPID_SYS_CONNECTIONOUTPUTHANDLERPTR_H*/
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