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48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
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// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
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// SPDX-License-Identifier: MIT
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#pragma once
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// Include for __rdtsc
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#if defined(JPH_PLATFORM_WINDOWS)
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#include <intrin.h>
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#elif defined(JPH_CPU_X86) && defined(JPH_COMPILER_GCC)
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#include <x86intrin.h>
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#elif defined(JPH_CPU_E2K)
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#include <x86intrin.h>
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#endif
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JPH_NAMESPACE_BEGIN
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#if defined(JPH_PLATFORM_WINDOWS_UWP) || (defined(JPH_PLATFORM_WINDOWS) && defined(JPH_CPU_ARM))
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/// Functionality to get the processors cycle counter
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uint64 GetProcessorTickCount(); // Not inline to avoid having to include Windows.h
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#else
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/// Functionality to get the processors cycle counter
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JPH_INLINE uint64 GetProcessorTickCount()
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{
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#if defined(JPH_PLATFORM_BLUE)
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return JPH_PLATFORM_BLUE_GET_TICKS();
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#elif defined(JPH_CPU_X86)
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return __rdtsc();
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#elif defined(JPH_CPU_E2K)
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return __rdtsc();
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#elif defined(JPH_CPU_ARM) && defined(JPH_USE_NEON)
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uint64 val;
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asm volatile("mrs %0, cntvct_el0" : "=r" (val));
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return val;
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#elif defined(JPH_CPU_ARM) || defined(JPH_CPU_RISCV) || defined(JPH_CPU_WASM) || defined(JPH_CPU_PPC) || defined(JPH_CPU_LOONGARCH)
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return 0; // Not supported
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#else
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#error Undefined
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#endif
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}
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#endif // JPH_PLATFORM_WINDOWS_UWP || (JPH_PLATFORM_WINDOWS && JPH_CPU_ARM)
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JPH_NAMESPACE_END
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