folly::CpuId Class Reference

#include <CpuId.h>

Public Member Functions
FOLLY_ALWAYS_INLINE	CpuId ()
FOLLY_ALWAYS_INLINE bool	sse3 () const
FOLLY_ALWAYS_INLINE bool	pclmuldq () const
FOLLY_ALWAYS_INLINE bool	dtes64 () const
FOLLY_ALWAYS_INLINE bool	monitor () const
FOLLY_ALWAYS_INLINE bool	dscpl () const
FOLLY_ALWAYS_INLINE bool	vmx () const
FOLLY_ALWAYS_INLINE bool	smx () const
FOLLY_ALWAYS_INLINE bool	eist () const
FOLLY_ALWAYS_INLINE bool	tm2 () const
FOLLY_ALWAYS_INLINE bool	ssse3 () const
FOLLY_ALWAYS_INLINE bool	cnxtid () const
FOLLY_ALWAYS_INLINE bool	fma () const
FOLLY_ALWAYS_INLINE bool	cx16 () const
FOLLY_ALWAYS_INLINE bool	xtpr () const
FOLLY_ALWAYS_INLINE bool	pdcm () const
FOLLY_ALWAYS_INLINE bool	pcid () const
FOLLY_ALWAYS_INLINE bool	dca () const
FOLLY_ALWAYS_INLINE bool	sse41 () const
FOLLY_ALWAYS_INLINE bool	sse42 () const
FOLLY_ALWAYS_INLINE bool	x2apic () const
FOLLY_ALWAYS_INLINE bool	movbe () const
FOLLY_ALWAYS_INLINE bool	popcnt () const
FOLLY_ALWAYS_INLINE bool	tscdeadline () const
FOLLY_ALWAYS_INLINE bool	aes () const
FOLLY_ALWAYS_INLINE bool	xsave () const
FOLLY_ALWAYS_INLINE bool	osxsave () const
FOLLY_ALWAYS_INLINE bool	avx () const
FOLLY_ALWAYS_INLINE bool	f16c () const
FOLLY_ALWAYS_INLINE bool	rdrand () const
FOLLY_ALWAYS_INLINE bool	fpu () const
FOLLY_ALWAYS_INLINE bool	vme () const
FOLLY_ALWAYS_INLINE bool	de () const
FOLLY_ALWAYS_INLINE bool	pse () const
FOLLY_ALWAYS_INLINE bool	tsc () const
FOLLY_ALWAYS_INLINE bool	msr () const
FOLLY_ALWAYS_INLINE bool	pae () const
FOLLY_ALWAYS_INLINE bool	mce () const
FOLLY_ALWAYS_INLINE bool	cx8 () const
FOLLY_ALWAYS_INLINE bool	apic () const
FOLLY_ALWAYS_INLINE bool	sep () const
FOLLY_ALWAYS_INLINE bool	mtrr () const
FOLLY_ALWAYS_INLINE bool	pge () const
FOLLY_ALWAYS_INLINE bool	mca () const
FOLLY_ALWAYS_INLINE bool	cmov () const
FOLLY_ALWAYS_INLINE bool	pat () const
FOLLY_ALWAYS_INLINE bool	pse36 () const
FOLLY_ALWAYS_INLINE bool	psn () const
FOLLY_ALWAYS_INLINE bool	clfsh () const
FOLLY_ALWAYS_INLINE bool	ds () const
FOLLY_ALWAYS_INLINE bool	acpi () const
FOLLY_ALWAYS_INLINE bool	mmx () const
FOLLY_ALWAYS_INLINE bool	fxsr () const
FOLLY_ALWAYS_INLINE bool	sse () const
FOLLY_ALWAYS_INLINE bool	sse2 () const
FOLLY_ALWAYS_INLINE bool	ss () const
FOLLY_ALWAYS_INLINE bool	htt () const
FOLLY_ALWAYS_INLINE bool	tm () const
FOLLY_ALWAYS_INLINE bool	pbe () const
FOLLY_ALWAYS_INLINE bool	bmi1 () const
FOLLY_ALWAYS_INLINE bool	hle () const
FOLLY_ALWAYS_INLINE bool	avx2 () const
FOLLY_ALWAYS_INLINE bool	smep () const
FOLLY_ALWAYS_INLINE bool	bmi2 () const
FOLLY_ALWAYS_INLINE bool	erms () const
FOLLY_ALWAYS_INLINE bool	invpcid () const
FOLLY_ALWAYS_INLINE bool	rtm () const
FOLLY_ALWAYS_INLINE bool	mpx () const
FOLLY_ALWAYS_INLINE bool	avx512f () const
FOLLY_ALWAYS_INLINE bool	avx512dq () const
FOLLY_ALWAYS_INLINE bool	rdseed () const
FOLLY_ALWAYS_INLINE bool	adx () const
FOLLY_ALWAYS_INLINE bool	smap () const
FOLLY_ALWAYS_INLINE bool	avx512ifma () const
FOLLY_ALWAYS_INLINE bool	pcommit () const
FOLLY_ALWAYS_INLINE bool	clflushopt () const
FOLLY_ALWAYS_INLINE bool	clwb () const
FOLLY_ALWAYS_INLINE bool	avx512pf () const
FOLLY_ALWAYS_INLINE bool	avx512er () const
FOLLY_ALWAYS_INLINE bool	avx512cd () const
FOLLY_ALWAYS_INLINE bool	sha () const
FOLLY_ALWAYS_INLINE bool	avx512bw () const
FOLLY_ALWAYS_INLINE bool	avx512vl () const
FOLLY_ALWAYS_INLINE bool	prefetchwt1 () const
FOLLY_ALWAYS_INLINE bool	avx512vbmi () const

Private Attributes
uint32_t	f1c_ = 0
uint32_t	f1d_ = 0
uint32_t	f7b_ = 0
uint32_t	f7c_ = 0

Detailed Description

Identification of an Intel CPU. Supports CPUID feature flags (EAX=1) and extended features (EAX=7, ECX=0). Values from http://www.intel.com/content/www/us/en/processors/processor-identification-cpuid-instruction-note.html

Definition at line 35 of file CpuId.h.

Constructor & Destructor Documentation

FOLLY_ALWAYS_INLINE folly::CpuId::CpuId ( )

inline

Definition at line 43 of file CpuId.h.

References f1c_, f1d_, f7b_, f7c_, and uint32_t.

                              {
#if defined(_MSC_VER) && (FOLLY_X64 || defined(_M_IX86))
    int reg[4];
    __cpuid(static_cast<int*>(reg), 0);
    const int n = reg[0];
    if (n >= 1) {
      __cpuid(static_cast<int*>(reg), 1);
      f1c_ = uint32_t(reg[2]);
      f1d_ = uint32_t(reg[3]);
    }
    if (n >= 7) {
      __cpuidex(static_cast<int*>(reg), 7, 0);
      f7b_ = uint32_t(reg[1]);
      f7c_ = uint32_t(reg[2]);
    }
#elif defined(__i386__) && defined(__PIC__) && !defined(__clang__) && \
    defined(__GNUC__)
    // The following block like the normal cpuid branch below, but gcc
    // reserves ebx for use of its pic register so we must specially
    // handle the save and restore to avoid clobbering the register
    uint32_t n;
    __asm__(
        "pushl %%ebx\n\t"
        "cpuid\n\t"
        "popl %%ebx\n\t"
        : "=a"(n)
        : "a"(0)
        : "ecx", "edx");
    if (n >= 1) {
      uint32_t f1a;
      __asm__(
          "pushl %%ebx\n\t"
          "cpuid\n\t"
          "popl %%ebx\n\t"
          : "=a"(f1a), "=c"(f1c_), "=d"(f1d_)
          : "a"(1)
          :);
    }
    if (n >= 7) {
      __asm__(
          "pushl %%ebx\n\t"
          "cpuid\n\t"
          "movl %%ebx, %%eax\n\r"
          "popl %%ebx"
          : "=a"(f7b_), "=c"(f7c_)
          : "a"(7), "c"(0)
          : "edx");
    }
#elif FOLLY_X64 || defined(__i386__)
    uint32_t n;
    __asm__("cpuid" : "=a"(n) : "a"(0) : "ebx", "ecx", "edx");
    if (n >= 1) {
      uint32_t f1a;
      __asm__("cpuid" : "=a"(f1a), "=c"(f1c_), "=d"(f1d_) : "a"(1) : "ebx");
    }
    if (n >= 7) {
      uint32_t f7a;
      __asm__("cpuid"
              : "=a"(f7a), "=b"(f7b_), "=c"(f7c_)
              : "a"(7), "c"(0)
              : "edx");
    }
#endif
  }

Member Function Documentation

FOLLY_ALWAYS_INLINE bool folly::CpuId::acpi ( ) const

inline

Definition at line 166 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::adx ( ) const

inline

Definition at line 191 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::aes ( ) const

inline

Definition at line 138 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::apic ( ) const

inline

Definition at line 155 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx ( ) const

inline

Definition at line 141 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx2 ( ) const

inline

Definition at line 181 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512bw ( ) const

inline

Definition at line 201 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512cd ( ) const

inline

Definition at line 199 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512dq ( ) const

inline

Definition at line 189 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512er ( ) const

inline

Definition at line 198 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512f ( ) const

inline

Definition at line 188 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512ifma ( ) const

inline

Definition at line 193 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512pf ( ) const

inline

Definition at line 197 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512vbmi ( ) const

inline

Definition at line 206 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::avx512vl ( ) const

inline

Definition at line 202 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::bmi1 ( ) const

inline

Definition at line 179 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::bmi2 ( ) const

inline

Definition at line 183 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::clflushopt ( ) const

inline

Definition at line 195 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::clfsh ( ) const

inline

Definition at line 164 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::clwb ( ) const

inline

Definition at line 196 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::cmov ( ) const

inline

Definition at line 160 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::cnxtid ( ) const

inline

Definition at line 125 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::cx16 ( ) const

inline

Definition at line 127 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::cx8 ( ) const

inline

Definition at line 154 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::dca ( ) const

inline

Definition at line 131 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::de ( ) const

inline

Definition at line 148 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::ds ( ) const

inline

Definition at line 165 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::dscpl ( ) const

inline

Definition at line 119 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::dtes64 ( ) const

inline

Definition at line 117 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::eist ( ) const

inline

Definition at line 122 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::erms ( ) const

inline

Definition at line 184 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::f16c ( ) const

inline

Definition at line 142 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::fma ( ) const

inline

Definition at line 126 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::fpu ( ) const

inline

Definition at line 146 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::fxsr ( ) const

inline

Definition at line 168 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::hle ( ) const

inline

Definition at line 180 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::htt ( ) const

inline

Definition at line 172 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::invpcid ( ) const

inline

Definition at line 185 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::mca ( ) const

inline

Definition at line 159 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::mce ( ) const

inline

Definition at line 153 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::mmx ( ) const

inline

Definition at line 167 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::monitor ( ) const

inline

Definition at line 118 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::movbe ( ) const

inline

Definition at line 135 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::mpx ( ) const

inline

Definition at line 187 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::msr ( ) const

inline

Definition at line 151 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::mtrr ( ) const

inline

Definition at line 157 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::osxsave ( ) const

inline

Definition at line 140 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pae ( ) const

inline

Definition at line 152 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pat ( ) const

inline

Definition at line 161 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pbe ( ) const

inline

Definition at line 174 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pcid ( ) const

inline

Definition at line 130 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pclmuldq ( ) const

inline

Definition at line 116 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pcommit ( ) const

inline

Definition at line 194 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pdcm ( ) const

inline

Definition at line 129 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pge ( ) const

inline

Definition at line 158 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::popcnt ( ) const

inline

Definition at line 136 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::prefetchwt1 ( ) const

inline

Definition at line 205 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pse ( ) const

inline

Definition at line 149 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::pse36 ( ) const

inline

Definition at line 162 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::psn ( ) const

inline

Definition at line 163 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::rdrand ( ) const

inline

Definition at line 143 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::rdseed ( ) const

inline

Definition at line 190 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::rtm ( ) const

inline

Definition at line 186 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::sep ( ) const

inline

Definition at line 156 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::sha ( ) const

inline

Definition at line 200 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::smap ( ) const

inline

Definition at line 192 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::smep ( ) const

inline

Definition at line 182 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::smx ( ) const

inline

Definition at line 121 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::ss ( ) const

inline

Definition at line 171 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::sse ( ) const

inline

Definition at line 169 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::sse2 ( ) const

inline

Definition at line 170 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::sse3 ( ) const

inline

Definition at line 115 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::sse41 ( ) const

inline

Definition at line 132 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::sse42 ( ) const

inline

Definition at line 133 of file CpuId.h.

Referenced by folly::detail::qfind_first_byte_of().

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::ssse3 ( ) const

inline

Definition at line 124 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::tm ( ) const

inline

Definition at line 173 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::tm2 ( ) const

inline

Definition at line 123 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::tsc ( ) const

inline

Definition at line 150 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::tscdeadline ( ) const

inline

Definition at line 137 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::vme ( ) const

inline

Definition at line 147 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::vmx ( ) const

inline

Definition at line 120 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::x2apic ( ) const

inline

Definition at line 134 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::xsave ( ) const

inline

Definition at line 139 of file CpuId.h.

:
  uint32_t f1c_ = 0;

FOLLY_ALWAYS_INLINE bool folly::CpuId::xtpr ( ) const

inline

Definition at line 128 of file CpuId.h.

:
  uint32_t f1c_ = 0;

Member Data Documentation

uint32_t folly::CpuId::f1c_ = 0

private

Definition at line 212 of file CpuId.h.

Referenced by CpuId().

uint32_t folly::CpuId::f1d_ = 0

private

Definition at line 213 of file CpuId.h.

Referenced by CpuId().

uint32_t folly::CpuId::f7b_ = 0

private

Definition at line 214 of file CpuId.h.

Referenced by CpuId().

uint32_t folly::CpuId::f7c_ = 0

private

Definition at line 215 of file CpuId.h.

Referenced by CpuId().

---

The documentation for this class was generated from the following file:

• proxygen/folly/folly/CpuId.h