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//
// Copyright (C) 2015-2018 Greg Landrum
//
// @@ All Rights Reserved @@
// This file is part of the RDKit.
// The contents are covered by the terms of the BSD license
// which is included in the file license.txt, found at the root
// of the RDKit source tree.
//
#include <RDGeneral/export.h>
#ifndef RDTHREADS_H_2015
#define RDTHREADS_H_2015
#include <RDGeneral/Invariant.h>
#ifdef RDK_THREADSAFE_SSS
#include <thread>
namespace RDKit {
inline unsigned int getNumThreadsToUse(int target) {
if (target >= 1) {
return static_cast<unsigned int>(target);
}
unsigned int res = std::thread::hardware_concurrency();
if (res > rdcast<unsigned int>(-target)) {
return res + target;
} else {
return 1;
}
}
} // namespace RDKit
#else
namespace RDKit {
inline unsigned int getNumThreadsToUse(int target) {
RDUNUSED_PARAM(target);
return 1;
}
} // namespace RDKit
#endif
#endif
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