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__rdtsc
_AcquireSpinLock
__addfsbyte, __addfsword, __addfsdword
__addgsbyte, __addgsword, __addgsdword, __addgsqword
_AddressOfReturnAddress
__assume
_BitScanForward, _BitScanForward64
_BitScanReverse, _BitScanReverse64
_bittest, _bittest64
_bittestandcomplement, _bittestandcomplement64
_bittestandreset, _bittestandreset64
_bittestandset, _bittestandset64
__break
__cpuid
__debugbreak
_disable
__dsrlz
__emul, __emulu
_enable
__faststorefence
__fc
__fci
__fclrf
__flushrs
__fsetc
__fwb
__getcallerseflags
__getPSP
__getCFS
__getReg
_InterlockedAdd Intrinsic Functions
_InterlockedAddLargeStatistic
_InterlockedAnd, _InterlockedAnd64
_interlockedbittestandreset, _interlockedbittestandreset64
_interlockedbittestandset, _interlockedbittestandset64
_InterlockedCompareExchange Intrinsic Functions
_InterlockedCompare64Exchange128, _InterlockedCompare64Exchange128_acq, _InterlockedCompare64Exchange128_rel
_InterlockedCompareExchangePointer Intrinsic Functions
_InterlockedDecrement Intrinsic Functions
_InterlockedExchange Intrinsic Functions
_InterlockedExchangeAdd Intrinsic Functions
_InterlockedExchangePointer Intrinsic Functions
_InterlockedIncrement Intrinsic Functions
_InterlockedOr, _InterlockedOr64
_InterlockedXor, _InterlockedXor64
__inbyte
__inbytestring
__incfsbyte, __incfsword, __incfsdword
__incgsbyte, __incgsword, __incgsdword, __incgsqword
__indword
__indwordstring
__int2c
__invalat
__invlpg
__inword
__inwordstring
__isNat
__isrlz
__lfetch, __lfetch_excl, __lfetchfault, __lfetchfault_excl
__ll_lshift
__ll_rshift
__load128, __load128_acq
__m64_czx1l, __m64_czx1r, __m64_czx2l, __m64_czx2r
__m64_dep_mi
__m64_dep_mr
__m64_dep_zi
__m64_dep_zr
__m64_extr, __m64_extru
__m64_mix1l, __m64_mix1r, __m64_mix2l, __m64_mix2r, __m64_mix4l, __m64_mix4r
__m64_muladd64hi, __m64_muladd64hi_u
__m64_muladd64lo
__m64_mux1
__m64_mux2
__m64_padd1uus
__m64_padd2uus
__m64_pavg1_nraz
__m64_pavg2_nraz
__m64_pavgsub1
__m64_pavgsub2
__m64_pmpy2l, __m64_pmpy2r
__m64_pmpyshr2, __m64_pmpyshr2u
__m64_popcnt
__m64_pshladd2
__m64_pshradd2
__m64_psub1uus
__m64_psub2uus
__m64_shladd
__m64_shrp
__mf
__mfa
_mm_addsub_pd
_mm_addsub_ps
_mm_cvt_pi2ps
_mm_cvt_ps2pi
_mm_cvt_si2ss
_mm_cvt_ss2si
_mm_cvtsd_si64x
_mm_cvtsi128_si64x
_mm_cvtsi64x_sd
_mm_cvtsi64x_si128
_mm_cvtsi64x_ss
_mm_cvtss_si64x
_mm_cvtt_ps2pi
_mm_cvtt_ss2si
_mm_cvttsd_si64x
_mm_cvttss_si64x
_mm_hadd_pd
_mm_hadd_ps
_mm_hsub_pd
_mm_hsub_ps
_mm_lddqu_si128
_mm_loaddup_pd
_mm_monitor
_mm_movedup_pd
_mm_movehdup_ps
_mm_moveldup_ps
_mm_set_epi64x
_mm_set1_epi64x
_mm_setl_epi64
_mm_stream_si64x
_mm_mwait
__movsb
__movsd
__movsq
__movsw
__mul128
__mulh
__noop
__outbyte
__outbytestring
__outdword
__outdwordstring
__outword
__outwordstring
__ptcg, __ptcga
__ptcl
__ptrd, __ptri
_rdteb
__rdtsc
__readcr0
__readcr2
__readcr3
__readcr4
__readcr8
__readfsbyte, __readfsdword, __readfsqword, __readfsword
__readgsbyte, __readgsdword, __readgsqword, __readgsword
_ReadBarrier
__readmsr
__readpmc
_ReadWriteBarrier
_ReleaseSpinLock
_ReturnAddress
_rotl8, _rotl16
_rotr8, _rotr16
__rsm
__rum
__setReg
__segmentlimit
__shiftleft128
__shiftright128
__ssm
__store128, __store128_rel
__stosb
__stosd
__stosq
__stosw
__sum
__synci
__thash
__ttag
__ull_rshift
_umul128
__UMULH, __umulh
__wbinvd
_WriteBarrier
__writecr0
__writecr3
__writecr4
__writecr8
__writefsbyte, __writefsdword, __writefsqword, __writefsword
__writegsbyte, __writegsdword, __writegsqword, __writegsword
__writemsr
__yield
__writedr
__readdr
__writeeflags
__readeflags
__svm_vmrun
__svm_vmsave
__svm_vmload
__svm_stgi
__svm_skinit
__svm_invlpga
__svm_clgi
__nop
__ud2
__lidt
__sidt
__halt
__vmx_vmptrst
__vmx_vmptrld
__vmx_vmlaunch
__vmx_vmwrite
__vmx_off
__vmx_on
__vmx_vmread
__vmx_vmresume
__vmx_vmclear
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__rdtsc

Visual Studio 2005

Microsoft Specific

Generates the rdtsc instruction, which returns the processor time stamp. The processor time stamp records the number of clock cycles since the last reset.

Copy 

unsigned __int64 __rdtsc(void);

A 64-bit unsigned integer representing a tick count.

Intrinsic Architecture

__rdtsc

x86, x64

Header file <intrin.h>

This routine is only available as an intrinsic.

Copy 
// rdtsc.cpp
// processor: x86, x64
#include <stdio.h>
#include <intrin.h>

#pragma intrinsic(__rdtsc)

int main()
{
    unsigned __int64 i;
    i = __rdtsc();
    printf_s("%I64d ticks\n", i);
}

Sample Output

3363423610155519 ticks
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