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communication_buffer.hh
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Wed, Jun 19, 03:04

communication_buffer.hh
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/**
* Copyright (©) 2010-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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 "element.hh"
/* -------------------------------------------------------------------------- */
#include <array>
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_COMMUNICATION_BUFFER_HH_
#define AKANTU_COMMUNICATION_BUFFER_HH_
namespace akantu {
template <bool is_static = true> class CommunicationBufferTemplated {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
// NOLINTNEXTLINE(cppcoreguidelines-narrowing-conversions)
CommunicationBufferTemplated(std::size_t size = 0) : buffer(size, 1, char()) {
ptr_pack = buffer.data();
ptr_unpack = buffer.data();
};
CommunicationBufferTemplated(const CommunicationBufferTemplated & other) =
delete;
CommunicationBufferTemplated &
operator=(const CommunicationBufferTemplated & other) = delete;
CommunicationBufferTemplated &
operator=(CommunicationBufferTemplated && other) = delete;
CommunicationBufferTemplated(CommunicationBufferTemplated && other) noexcept =
default;
virtual ~CommunicationBufferTemplated() = default;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// reset to "empty"
inline void reset();
/// resize the internal buffer do not allocate on dynamic buffers
inline void resize(std::size_t size);
/// resize the internal buffer allocate always
inline void reserve(std::size_t size);
/// clear buffer context
inline void zero();
private:
inline void packResize(std::size_t size);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
[[deprecated("use data instead to be stl compatible"),
nodiscard]] inline char *
storage() {
return buffer.data();
};
[[deprecated("use data instead to be stl compatible"),
nodiscard]] inline const char *
storage() const {
return buffer.data();
};
[[nodiscard]] inline char * data() { return buffer.data(); };
[[nodiscard]] inline const char * data() const { return buffer.data(); };
/* ------------------------------------------------------------------------ */
/* Operators */
/* ------------------------------------------------------------------------ */
public:
/// printing tool
template <typename T>
inline std::string extractStream(std::size_t block_size);
/// packing data
template <typename T, std::enable_if_t<std::is_standard_layout_v<T> and
not aka::is_tensor_v<T>> * = nullptr>
inline CommunicationBufferTemplated & operator<<(const T & to_pack);
template <typename T, std::enable_if_t<aka::is_tensor_v<T>> * = nullptr>
inline CommunicationBufferTemplated & operator<<(const T & to_pack);
template <typename T>
inline CommunicationBufferTemplated &
operator<<(const std::vector<T> & to_pack);
inline CommunicationBufferTemplated & operator<<(const std::string & to_pack);
/// unpacking data
template <typename T, std::enable_if_t<std::is_standard_layout_v<T> and
not aka::is_tensor_v<T>> * = nullptr>
inline CommunicationBufferTemplated & operator>>(T & to_unpack);
template <typename T, std::enable_if_t<aka::is_tensor_v<T>> * = nullptr>
inline CommunicationBufferTemplated & operator>>(T & to_unpack);
template <typename T>
inline CommunicationBufferTemplated & operator>>(std::vector<T> & to_unpack);
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_unpack);
/* ------------------------------------------------------------------------ */
/* Accessor */
/* ------------------------------------------------------------------------ */
public:
template <typename T, std::enable_if_t<std::is_standard_layout_v<T> and
not aka::is_tensor_v<T>> * = nullptr>
static inline std::size_t sizeInBuffer(const T & data);
template <typename T, std::enable_if_t<aka::is_tensor_v<T>> * = nullptr>
static inline std::size_t sizeInBuffer(const T & data);
template <typename T>
static inline std::size_t sizeInBuffer(const std::vector<T> & data);
static inline std::size_t sizeInBuffer(const std::string & data);
/// return the size in bytes of the stored values
[[nodiscard]] inline std::size_t getPackedSize() const {
return ptr_pack - buffer.data();
};
/// return the size in bytes of data left to be unpacked
[[nodiscard]] inline std::size_t getLeftToUnpack() const {
return buffer.size() - (ptr_unpack - buffer.data());
};
/// return the global size allocated
[[nodiscard]] inline std::size_t size() const { return buffer.size(); };
/// is the buffer empty
[[nodiscard]] inline bool empty() const {
return (getPackedSize() == 0) and (getLeftToUnpack() == 0);
}
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
/// current position for packing
char * ptr_pack{nullptr};
/// current position for unpacking
char * ptr_unpack{nullptr};
/// storing buffer
Array<char> buffer;
};
using CommunicationBuffer = CommunicationBufferTemplated<true>;
using DynamicCommunicationBuffer = CommunicationBufferTemplated<false>;
} // namespace akantu
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "communication_buffer_inline_impl.hh"
#endif /* AKANTU_COMMUNICATION_BUFFER_HH_ */

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