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communication_buffer.hh
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/**
* @file communication_buffer.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Wed Nov 08 2017
*
* @brief Buffer for packing and unpacking data
*
* @section LICENSE
*
* Copyright (©) 2010-2018 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_array.hh"
#include "aka_common.hh"
#include "element.hh"
#ifndef __AKANTU_COMMUNICATION_BUFFER_HH__
#define __AKANTU_COMMUNICATION_BUFFER_HH__
namespace akantu {
template <bool is_static = true> class CommunicationBufferTemplated {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
explicit CommunicationBufferTemplated(UInt size) : buffer(size, 1) {
ptr_pack = buffer.storage();
ptr_unpack = buffer.storage();
};
CommunicationBufferTemplated() : CommunicationBufferTemplated(0) {}
CommunicationBufferTemplated(const CommunicationBufferTemplated & other) {
buffer = other.buffer;
ptr_pack = buffer.storage();
ptr_unpack = buffer.storage();
}
CommunicationBufferTemplated &
operator=(const CommunicationBufferTemplated & other) {
if (this != &other) {
buffer = other.buffer;
ptr_pack = buffer.storage();
ptr_unpack = buffer.storage();
}
return *this;
}
virtual ~CommunicationBufferTemplated() = default;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// reset to "empty"
inline void reset();
/// resize the internal buffer do not allocate on dynamic buffers
inline void resize(UInt size);
/// resize the internal buffer allocate always
inline void reserve(UInt size);
/// clear buffer context
inline void clear();
private:
inline void packResize(UInt size);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
inline char * storage() { return buffer.storage(); };
inline const char * storage() const { return buffer.storage(); };
/* ------------------------------------------------------------------------ */
/* Operators */
/* ------------------------------------------------------------------------ */
public:
/// printing tool
template <typename T> inline std::string extractStream(UInt packet_size);
/// packing data
template <typename T>
inline CommunicationBufferTemplated & operator<<(const T & to_pack);
template <typename T>
inline CommunicationBufferTemplated & operator<<(const Vector<T> & to_pack);
template <typename T>
inline CommunicationBufferTemplated & operator<<(const Matrix<T> & to_pack);
template <typename T>
inline CommunicationBufferTemplated &
operator<<(const std::vector<T> & to_pack);
/// unpacking data
template <typename T>
inline CommunicationBufferTemplated & operator>>(T & to_unpack);
template <typename T>
inline CommunicationBufferTemplated & operator>>(Vector<T> & to_unpack);
template <typename T>
inline CommunicationBufferTemplated & operator>>(Matrix<T> & to_unpack);
template <typename T>
inline CommunicationBufferTemplated & operator>>(std::vector<T> & to_unpack);
inline CommunicationBufferTemplated & operator<<(const std::string & to_pack);
inline CommunicationBufferTemplated & operator>>(std::string & to_unpack);
private:
template <typename T> inline void packIterable(T & to_pack);
template <typename T> inline void unpackIterable(T & to_pack);
/* ------------------------------------------------------------------------ */
/* Accessor */
/* ------------------------------------------------------------------------ */
public:
template <typename T> static inline UInt sizeInBuffer(const T & data);
template <typename T> static inline UInt sizeInBuffer(const Vector<T> & data);
template <typename T> static inline UInt sizeInBuffer(const Matrix<T> & data);
template <typename T>
static inline UInt sizeInBuffer(const std::vector<T> & data);
static inline UInt sizeInBuffer(const std::string & data);
/// return the size in bytes of the stored values
inline UInt getPackedSize() const { return ptr_pack - buffer.storage(); };
/// return the size in bytes of data left to be unpacked
inline UInt getLeftToUnpack() const {
return buffer.size() - (ptr_unpack - buffer.storage());
};
/// return the global size allocated
inline UInt size() const { return buffer.size(); };
/// is the buffer empty
inline bool empty() const {
return (getPackedSize() == 0) and (getLeftToUnpack() == 0);
}
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
/// current position for packing
char * ptr_pack;
/// current position for unpacking
char * ptr_unpack;
/// storing buffer
Array<char> buffer;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#if defined(AKANTU_INCLUDE_INLINE_IMPL)
#include "communication_buffer_inline_impl.cc"
#endif
using CommunicationBuffer = CommunicationBufferTemplated<true>;
using DynamicCommunicationBuffer = CommunicationBufferTemplated<false>;
} // namespace akantu
#endif /* __AKANTU_COMMUNICATION_BUFFER_HH__ */

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