cpufeatures.h

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 **********************************************************************/
 
#pragma once
 
#include <cstdint>
#include <utility>
#include "sysconfig.h"
 
class QString;
 
namespace LC::Util
{
    class UTIL_SYS_API CpuFeatures
    {
        uint32_t Ecx1_ = 0;
        uint32_t Ebx7_ = 0;
    public:
        CpuFeatures ();
 
        enum class Feature
        {
            SSSE3,
            SSE41,
            AVX,
            XSave,
            AVX2,
 
            None
        };
 
        bool HasFeature (Feature) const;
 
        static QString GetFeatureName (Feature);
 
        template<typename T>
        static T Choose (std::initializer_list<std::pair<Feature, T>> funcs, T fallback)
        {
            const CpuFeatures features;
            for (const auto& pair : funcs)
                if (features.HasFeature (pair.first))
                    return pair.second;
 
            return fallback;
        }
    private:
        void DumpDetectedFeatures () const;
    };
}