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37 lines
1.2 KiB
37 lines
1.2 KiB
1 year ago
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2021 Jérémie Dumas <jeremie.dumas@ens-lyon.org>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_DEFAULT_NUM_THREADS_H
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#define IGL_DEFAULT_NUM_THREADS_H
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#include "igl_inline.h"
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namespace igl
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{
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///
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/// Returns the default number of threads used in libigl. The value returned by the first call to
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/// this function is cached. The following strategy is used to determine the default number of
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/// threads:
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/// 1. User-provided argument force_num_threads if != 0.
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/// 2. Environment variable IGL_NUM_THREADS if > 0.
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/// 3. Hardware concurrency if != 0.
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/// 4. A fallback value of 8 is used otherwise.
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///
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/// @note It is safe to call this method from multiple threads.
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///
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/// @param[in] force_num_threads User-provided default value.
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///
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/// @return Default number of threads.
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///
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IGL_INLINE unsigned int default_num_threads(unsigned int force_num_threads = 0);
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}
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#ifndef IGL_STATIC_LIBRARY
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#include "default_num_threads.cpp"
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#endif
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#endif
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