initial commit, 4.5 stable

thirdparty/jolt_physics/Jolt/Core/TickCounter.h

@@ -0,0 +1,47 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+// Include for __rdtsc
+#if defined(JPH_PLATFORM_WINDOWS)
+	#include <intrin.h>
+#elif defined(JPH_CPU_X86) && defined(JPH_COMPILER_GCC)
+	#include <x86intrin.h>
+#elif defined(JPH_CPU_E2K)
+	#include <x86intrin.h>
+#endif
+
+JPH_NAMESPACE_BEGIN
+
+#if defined(JPH_PLATFORM_WINDOWS_UWP) || (defined(JPH_PLATFORM_WINDOWS) && defined(JPH_CPU_ARM))
+
+/// Functionality to get the processors cycle counter
+uint64 GetProcessorTickCount(); // Not inline to avoid having to include Windows.h
+
+#else
+
+/// Functionality to get the processors cycle counter
+JPH_INLINE uint64 GetProcessorTickCount()
+{
+#if defined(JPH_PLATFORM_BLUE)
+	return JPH_PLATFORM_BLUE_GET_TICKS();
+#elif defined(JPH_CPU_X86)
+	return __rdtsc();
+#elif defined(JPH_CPU_E2K)
+	return __rdtsc();
+#elif defined(JPH_CPU_ARM) && defined(JPH_USE_NEON)
+	uint64 val;
+	asm volatile("mrs %0, cntvct_el0" : "=r" (val));
+	return val;
+#elif defined(JPH_CPU_ARM) || defined(JPH_CPU_RISCV) || defined(JPH_CPU_WASM) || defined(JPH_CPU_PPC) || defined(JPH_CPU_LOONGARCH)
+	return 0; // Not supported
+#else
+	#error Undefined
+#endif
+}
+
+#endif // JPH_PLATFORM_WINDOWS_UWP || (JPH_PLATFORM_WINDOWS && JPH_CPU_ARM)
+
+JPH_NAMESPACE_END