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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*/
#pragma once
#include <sal/config.h>
#include <tools/toolsdllapi.h>
#include <o3tl/typed_flags_set.hxx>
#include <rtl/ustring.hxx>
/*
Do NOT include this header in source files compiled with CPU-specific code.
TODO: For the header to be safe that way, it should be free of any templates
or inline functions, otherwise their possibly emitted copies compiled
with the CPU-specific instructions might be chosen by the linker as the copy
to keep.
Also see the note at the top of simdsupport.hxx .
*/
namespace cpuid {
enum class InstructionSetFlags
{
NONE = 0x00,
HYPER = 0x01,
SSE2 = 0x02,
SSSE3 = 0x04,
SSE41 = 0x08,
SSE42 = 0x10,
AVX = 0x20,
AVX2 = 0x40,
AVX512F = 0x80
};
} // end cpuid
namespace o3tl {
template<> struct typed_flags<cpuid::InstructionSetFlags> : is_typed_flags<cpuid::InstructionSetFlags, 0x0ff> {};
}
namespace cpuid {
/** Get supported instruction set flags determined at runtime by probing the CPU.
*/
TOOLS_DLLPUBLIC InstructionSetFlags getCpuInstructionSetFlags();
/** Check if a certain instruction set is supported by the CPU at runtime.
*/
TOOLS_DLLPUBLIC bool isCpuInstructionSetSupported(InstructionSetFlags eInstructions);
/** Returns a string of supported instructions.
*/
TOOLS_DLLPUBLIC OUString instructionSetSupportedString();
/** Check if SSE2 is supported by the CPU
*/
inline bool hasSSE2()
{
return isCpuInstructionSetSupported(InstructionSetFlags::SSE2);
}
/** Check if SSSE3 is supported by the CPU
*/
inline bool hasSSSE3()
{
return isCpuInstructionSetSupported(InstructionSetFlags::SSSE3);
}
/** Check if AVX is supported by the CPU
*/
inline bool hasAVX()
{
return isCpuInstructionSetSupported(InstructionSetFlags::AVX);
}
/** Check if AVX2 is supported by the CPU
*/
inline bool hasAVX2()
{
return isCpuInstructionSetSupported(InstructionSetFlags::AVX2);
}
/** Check if AVX512F is supported by the CPU
*/
inline bool hasAVX512F()
{
return isCpuInstructionSetSupported(InstructionSetFlags::AVX512F);
}
/** Check if Hyper Threading is supported
*/
inline bool hasHyperThreading()
{
return isCpuInstructionSetSupported(InstructionSetFlags::HYPER);
}
} // end cpuid
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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