95a0a4664f
- We will now be building a 64-bit version of the awips2-notification rpm - Updated qpid-devel in nativeLib to match the version of qpid we are using - Added 64-bit libraries to thrift and qpid in nativeLib - The notification executables are now built from source out of nativeLib Former-commit-id:c3da463f39[formerlya210f08acc] [formerlyc3da463f39[formerlya210f08acc] [formerly0970259114[formerly 3205e61aaeba7ec7bccb0a4bd2ed8a6e83a77951]]] Former-commit-id:0970259114Former-commit-id:bad53d1b7f[formerly9490652103] Former-commit-id:83e1f8cc0a
71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
#ifndef QPID_MESSAGING_HANDLE_H
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#define QPID_MESSAGING_HANDLE_H
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/*
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include "qpid/messaging/ImportExport.h"
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namespace qpid {
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namespace messaging {
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template <class> class PrivateImplRef;
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/** \ingroup messaging
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* A handle is like a pointer: refers to an underlying implementation object.
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* Copying the handle does not copy the object.
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*
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* Handles can be null, like a 0 pointer. Use isValid(), isNull() or the
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* conversion to bool to test for a null handle.
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*/
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template <class T> class Handle {
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public:
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/**@return true if handle is valid, i.e. not null. */
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QPID_MESSAGING_EXTERN bool isValid() const { return impl; }
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/**@return true if handle is null. It is an error to call any function on a null handle. */
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QPID_MESSAGING_EXTERN bool isNull() const { return !impl; }
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/** Conversion to bool supports idiom if (handle) { handle->... } */
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QPID_MESSAGING_EXTERN operator bool() const { return impl; }
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/** Operator ! supports idiom if (!handle) { do_if_handle_is_null(); } */
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QPID_MESSAGING_EXTERN bool operator !() const { return !impl; }
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void swap(Handle<T>& h) { T* t = h.impl; h.impl = impl; impl = t; }
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protected:
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typedef T Impl;
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QPID_MESSAGING_EXTERN Handle() :impl() {}
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// Not implemented,subclasses must implement.
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QPID_MESSAGING_EXTERN Handle(const Handle&);
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QPID_MESSAGING_EXTERN Handle& operator=(const Handle&);
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Impl* impl;
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friend class PrivateImplRef<T>;
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};
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}} // namespace qpid::messaging
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#endif /*!QPID_MESSAGING_HANDLE_H*/
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