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Changed: Use __rdtsc() intrinsics everywhere for Intel CPUs
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1 changed files with 6 additions and 14 deletions
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@ -38,6 +38,10 @@
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# include <sys/types.h>
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#endif
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#if defined(NL_CPU_INTEL) && defined(NL_COMP_GCC)
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#include "x86intrin.h"
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#endif
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#include "string_common.h"
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#ifdef NL_OS_WINDOWS
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@ -65,20 +69,8 @@ namespace NLMISC
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inline uint64 rdtsc()
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{
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uint64 ticks;
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# ifdef NL_OS_WINDOWS
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# ifdef NL_NO_ASM
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ticks = uint64(__rdtsc());
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# else
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// We should use the intrinsic code now. ticks = uint64(__rdtsc());
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__asm rdtsc
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__asm mov DWORD PTR [ticks], eax
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__asm mov DWORD PTR [ticks + 4], edx
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# endif // NL_NO_ASM
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# else
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__asm__ volatile(".byte 0x0f, 0x31" : "=a" (ticks.low), "=d" (ticks.high));
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# endif // NL_OS_WINDOWS
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return ticks;
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// __rdtsc() is defined under all platforms
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return uint64(__rdtsc());
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}
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#endif // NL_CPU_INTEL
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