/usr/include/trilinos/Teko_RequestHandler.hpp is in libtrilinos-teko-dev 12.12.1-5.
This file is owned by root:root, with mode 0o644.
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//
// Teko: A package for block and physics based preconditioning
// Copyright 2010 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
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// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// documentation and/or other materials provided with the distribution.
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// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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*/
#ifndef __Teko_RequestHandler_hpp__
#define __Teko_RequestHandler_hpp__
#include <vector>
#include "Teko_RequestCallback.hpp"
#include "Teuchos_RCP.hpp"
namespace Teko {
/** Classes that handles and distrubutes requests.
* This has two types of users. Those that register
* callbacks to handle the requests, and those that
* make requests.
*
* This class is passive-aggressive. It calls required
* data a "request", however it actually requires
* a handler to satisfy the request.
*
* \note The implementation is based on the listener pattern.
*/
class RequestHandler {
public:
explicit RequestHandler();
/** Add a call back object to handle requests
*
* \param[in] callback Ref-count-pointer to a call back object.
*/
void addRequestCallback(const Teuchos::RCP<RequestCallbackBase> & callback);
/** Get the data for a particular request.
*
* \param[in] rm The message describing the request.
*/
template <typename DataT>
DataT request(const RequestMesg & rm) const;
/** Get the data for a particular request. Short hand version.
*
* \param[in] rm The message describing the request.
*/
template <typename DataT>
inline DataT request(const std::string & rm) const
{ return request<DataT>(RequestMesg(rm)); }
/** Send a pre-request message to the callback
* allowing them to do some work up front and
* ahead of time. This is meant to be called
* at construction/initialization.
*
* \param[in] rm The message describing the request.
*/
template <typename DataT>
void preRequest(const RequestMesg & rm) const;
/** Send a pre-request message to the callback
* allowing them to do some work up front and
* ahead of time. This is meant to be called
* at construction/initialization. Short hand version.
*
* \param[in] rm The message describing the request.
*/
template <typename DataT>
inline void preRequest(const std::string & rm) const
{ preRequest<DataT>(RequestMesg(rm)); }
private:
// stores the callbacks to be used by this handler.
mutable std::vector<Teuchos::RCP<RequestCallbackBase> > callbacks_;
// hidden from the user
RequestHandler(const RequestHandler & rh);
RequestHandler & operator=(const RequestHandler &);
const RequestHandler & operator=(const RequestHandler &) const;
};
#include "Teko_RequestHandler_impl.hpp"
}
#endif
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