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/* Chrysalide - Outil d'analyse de fichiers binaires
* nproc.h - prototypes pour la détermination du volume de traitements parallèles idéal
*
* Copyright (C) 2018 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Chrysalide 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Chrysalide. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CORE_NPROC_H
#define _CORE_NPROC_H
#include <glib.h>
/* Indique le nombre idéal de tâches pour bien occuper le CPU. */
guint get_max_online_threads(void);
/**
* Calcul de tranches de travaux, avec prise en compte des cas particuliers.
*/
#define compute_run_size(qty, cpus) \
({ \
if (qty == 0) \
*(cpus) = 0; \
else \
{ \
*(cpus) = get_max_online_threads(); \
if (qty < *(cpus)) \
*(cpus) = qty; \
} \
*(cpus) > 0 ? qty / *(cpus) : 0; \
})
#endif /* _CORE_NPROC_H */
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