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synchronizer.hh
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/**
* @file synchronizer.hh
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @date Mon Aug 23 13:48:37 2010
*
* @brief interface for communicator and pbc synchronizers
*
* @section LICENSE
*
* Copyright (©) 2010-2011 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/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_SYNCHRONIZER_HH__
#define __AKANTU_SYNCHRONIZER_HH__
/* -------------------------------------------------------------------------- */
#include "aka_memory.hh"
#include "data_accessor.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
class GhostSynchronizer;
}
__BEGIN_AKANTU__
class Synchronizer : protected Memory {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
Synchronizer(SynchronizerID id = "synchronizer", MemoryID memory_id = 0);
virtual ~Synchronizer() { };
virtual void printself(__attribute__((unused)) std::ostream & stream,
__attribute__((unused)) int indent = 0) const {};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// synchronize ghosts
void synchronize(DataAccessor & data_accessor,SynchronizationTag tag);
/// asynchronous synchronization of ghosts
virtual void asynchronousSynchronize(DataAccessor & data_accessor,SynchronizationTag tag) = 0;
/// wait end of asynchronous synchronization of ghosts
virtual void waitEndSynchronize(DataAccessor & data_accessor,SynchronizationTag tag) = 0;
/// compute buffer size for a given tag and data accessor
virtual void computeBufferSize(DataAccessor & data_accessor, SynchronizationTag tag)=0;
/**
* tag = |__________20_________|___8____|_4_|
* | proc | num mes| ct|
*/
class Tag {
public:
operator int() { return int(tag); }
static inline Tag genTag(int proc, UInt msg_count, UInt tag) {
Tag t;
t.tag = (((proc & 0xFFFFF) << 12) + ((msg_count & 0xFF) << 4) + (tag & 0xF));
return t;
}
virtual void printself(std::ostream & stream, int indent = 0) const {
stream << (tag >> 12) << ":" << (tag >> 4 & 0xFF) << ":" << (tag & 0xF);
}
private:
UInt tag;
};
protected:
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// id of the synchronizer
SynchronizerID id;
};
/// standard output stream operator
inline std::ostream & operator <<(std::ostream & stream, const Synchronizer & _this)
{
_this.printself(stream);
return stream;
}
inline std::ostream & operator <<(std::ostream & stream, const Synchronizer::Tag & _this)
{
_this.printself(stream);
return stream;
}
__END_AKANTU__
#endif /* __AKANTU_SYNCHRONIZER_HH__ */
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