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package de.lmu.ifi.dbs.elki.parallel.variables;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Shared variables storing a particular type.
*
* @author Erich Schubert
* @since 0.7.0
*
* @apiviz.has SharedVariable.Instance
*
* @param <I> Instance type
*/
public interface SharedVariable<I extends SharedVariable.Instance<?>> {
/**
* Instantiate for an execution thread.
*
* @return new Instance
*/
I instantiate();
/**
* Instance for a single execution thread.
*
* @author Erich Schubert
*
* @param <T> Payload type
*/
public static interface Instance<T> {
/**
* Get the current value
*
* @return Value
*/
T get();
/**
* Set a new value
*
* @param data Setter
*/
void set(T data);
}
}
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