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Posted to commits@quickstep.apache.org by ji...@apache.org on 2017/01/29 17:58:37 UTC
[45/54] [abbrv] [partial] incubator-quickstep git commit: Make the
third party directory leaner.
http://git-wip-us.apache.org/repos/asf/incubator-quickstep/blob/9661f956/third_party/farmhash/farmhash.cc
----------------------------------------------------------------------
diff --git a/third_party/farmhash/farmhash.cc b/third_party/farmhash/farmhash.cc
deleted file mode 100644
index f4d90bd..0000000
--- a/third_party/farmhash/farmhash.cc
+++ /dev/null
@@ -1,11854 +0,0 @@
-// Copyright (c) 2014 Google, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-//
-// FarmHash, by Geoff Pike
-
-#include "farmhash.h"
-// FARMHASH ASSUMPTIONS: Modify as needed, or use -DFARMHASH_ASSUME_SSE42 etc.
-// Note that if you use -DFARMHASH_ASSUME_SSE42 you likely need -msse42
-// (or its equivalent for your compiler); if you use -DFARMHASH_ASSUME_AESNI
-// you likely need -maes (or its equivalent for your compiler).
-
-#ifdef FARMHASH_ASSUME_SSSE3
-#undef FARMHASH_ASSUME_SSSE3
-#define FARMHASH_ASSUME_SSSE3 1
-#endif
-
-#ifdef FARMHASH_ASSUME_SSE41
-#undef FARMHASH_ASSUME_SSE41
-#define FARMHASH_ASSUME_SSE41 1
-#endif
-
-#ifdef FARMHASH_ASSUME_SSE42
-#undef FARMHASH_ASSUME_SSE42
-#define FARMHASH_ASSUME_SSE42 1
-#endif
-
-#ifdef FARMHASH_ASSUME_AESNI
-#undef FARMHASH_ASSUME_AESNI
-#define FARMHASH_ASSUME_AESNI 1
-#endif
-
-#ifdef FARMHASH_ASSUME_AVX
-#undef FARMHASH_ASSUME_AVX
-#define FARMHASH_ASSUME_AVX 1
-#endif
-
-#if !defined(FARMHASH_CAN_USE_CXX11) && defined(LANG_CXX11)
-#define FARMHASH_CAN_USE_CXX11 1
-#else
-#undef FARMHASH_CAN_USE_CXX11
-#define FARMHASH_CAN_USE_CXX11 0
-#endif
-
-// FARMHASH PORTABILITY LAYER: Runtime error if misconfigured
-
-#ifndef FARMHASH_DIE_IF_MISCONFIGURED
-#define FARMHASH_DIE_IF_MISCONFIGURED do { *(char*)(len % 17) = 0; } while (0)
-#endif
-
-// FARMHASH PORTABILITY LAYER: "static inline" or similar
-
-#ifndef STATIC_INLINE
-#define STATIC_INLINE static inline
-#endif
-
-// FARMHASH PORTABILITY LAYER: LIKELY and UNLIKELY
-
-#if !defined(LIKELY)
-#if defined(FARMHASH_NO_BUILTIN_EXPECT) || (defined(FARMHASH_OPTIONAL_BUILTIN_EXPECT) && !defined(HAVE_BUILTIN_EXPECT))
-#define LIKELY(x) (x)
-#else
-#define LIKELY(x) (__builtin_expect(!!(x), 1))
-#endif
-#endif
-
-#undef UNLIKELY
-#define UNLIKELY(x) !LIKELY(!(x))
-
-// FARMHASH PORTABILITY LAYER: endianness and byteswapping functions
-
-#ifdef WORDS_BIGENDIAN
-#undef FARMHASH_BIG_ENDIAN
-#define FARMHASH_BIG_ENDIAN 1
-#endif
-
-#if defined(FARMHASH_LITTLE_ENDIAN) && defined(FARMHASH_BIG_ENDIAN)
-#error
-#endif
-
-#if !defined(FARMHASH_LITTLE_ENDIAN) && !defined(FARMHASH_BIG_ENDIAN)
-#define FARMHASH_UNKNOWN_ENDIAN 1
-#endif
-
-#if !defined(bswap_32) || !defined(bswap_64)
-#undef bswap_32
-#undef bswap_64
-
-#if defined(HAVE_BUILTIN_BSWAP) || defined(__clang__) || \
- (defined(__GNUC__) && ((__GNUC__ == 4 && __GNUC_MINOR__ >= 8) || \
- __GNUC__ >= 5))
-// Easy case for bswap: no header file needed.
-#define bswap_32(x) __builtin_bswap32(x)
-#define bswap_64(x) __builtin_bswap64(x)
-#endif
-
-#endif
-
-#if defined(FARMHASH_UNKNOWN_ENDIAN) || !defined(bswap_64)
-
-#ifdef _MSC_VER
-
-#undef bswap_32
-#undef bswap_64
-#define bswap_32(x) _byteswap_ulong(x)
-#define bswap_64(x) _byteswap_uint64(x)
-
-#elif defined(__APPLE__)
-
-// Mac OS X / Darwin features
-#include <libkern/OSByteOrder.h>
-#undef bswap_32
-#undef bswap_64
-#define bswap_32(x) OSSwapInt32(x)
-#define bswap_64(x) OSSwapInt64(x)
-
-#elif defined(__sun) || defined(sun)
-
-#include <sys/byteorder.h>
-#undef bswap_32
-#undef bswap_64
-#define bswap_32(x) BSWAP_32(x)
-#define bswap_64(x) BSWAP_64(x)
-
-#elif defined(__FreeBSD__)
-
-#include <sys/endian.h>
-#undef bswap_32
-#undef bswap_64
-#define bswap_32(x) bswap32(x)
-#define bswap_64(x) bswap64(x)
-
-#elif defined(__OpenBSD__)
-
-#include <sys/types.h>
-#undef bswap_32
-#undef bswap_64
-#define bswap_32(x) swap32(x)
-#define bswap_64(x) swap64(x)
-
-#elif defined(__NetBSD__)
-
-#include <sys/types.h>
-#include <machine/bswap.h>
-#if defined(__BSWAP_RENAME) && !defined(__bswap_32)
-#undef bswap_32
-#undef bswap_64
-#define bswap_32(x) bswap32(x)
-#define bswap_64(x) bswap64(x)
-#endif
-
-#else
-
-#undef bswap_32
-#undef bswap_64
-#include <byteswap.h>
-
-#endif
-
-#ifdef WORDS_BIGENDIAN
-#define FARMHASH_BIG_ENDIAN 1
-#endif
-
-#endif
-
-#ifdef FARMHASH_BIG_ENDIAN
-#define uint32_in_expected_order(x) (bswap_32(x))
-#define uint64_in_expected_order(x) (bswap_64(x))
-#else
-#define uint32_in_expected_order(x) (x)
-#define uint64_in_expected_order(x) (x)
-#endif
-
-namespace NAMESPACE_FOR_HASH_FUNCTIONS {
-
-STATIC_INLINE uint64_t Fetch64(const char *p) {
- uint64_t result;
- memcpy(&result, p, sizeof(result));
- return uint64_in_expected_order(result);
-}
-
-STATIC_INLINE uint32_t Fetch32(const char *p) {
- uint32_t result;
- memcpy(&result, p, sizeof(result));
- return uint32_in_expected_order(result);
-}
-
-STATIC_INLINE uint32_t Bswap32(uint32_t val) { return bswap_32(val); }
-STATIC_INLINE uint64_t Bswap64(uint64_t val) { return bswap_64(val); }
-
-// FARMHASH PORTABILITY LAYER: bitwise rot
-
-STATIC_INLINE uint32_t BasicRotate32(uint32_t val, int shift) {
- // Avoid shifting by 32: doing so yields an undefined result.
- return shift == 0 ? val : ((val >> shift) | (val << (32 - shift)));
-}
-
-STATIC_INLINE uint64_t BasicRotate64(uint64_t val, int shift) {
- // Avoid shifting by 64: doing so yields an undefined result.
- return shift == 0 ? val : ((val >> shift) | (val << (64 - shift)));
-}
-
-#if defined(_MSC_VER) && defined(FARMHASH_ROTR)
-
-STATIC_INLINE uint32_t Rotate32(uint32_t val, int shift) {
- return sizeof(unsigned long) == sizeof(val) ?
- _lrotr(val, shift) :
- BasicRotate32(val, shift);
-}
-
-STATIC_INLINE uint64_t Rotate64(uint64_t val, int shift) {
- return sizeof(unsigned long) == sizeof(val) ?
- _lrotr(val, shift) :
- BasicRotate64(val, shift);
-}
-
-#else
-
-STATIC_INLINE uint32_t Rotate32(uint32_t val, int shift) {
- return BasicRotate32(val, shift);
-}
-STATIC_INLINE uint64_t Rotate64(uint64_t val, int shift) {
- return BasicRotate64(val, shift);
-}
-
-#endif
-
-} // namespace NAMESPACE_FOR_HASH_FUNCTIONS
-
-// FARMHASH PORTABILITY LAYER: debug mode or max speed?
-// One may use -DFARMHASH_DEBUG=1 or -DFARMHASH_DEBUG=0 to force the issue.
-
-#if !defined(FARMHASH_DEBUG) && (!defined(NDEBUG) || defined(_DEBUG))
-#define FARMHASH_DEBUG 1
-#endif
-
-#undef debug_mode
-#if FARMHASH_DEBUG
-#define debug_mode 1
-#else
-#define debug_mode 0
-#endif
-
-// PLATFORM-SPECIFIC FUNCTIONS AND MACROS
-
-#undef x86_64
-#if defined (__x86_64) || defined (__x86_64__) || defined(_M_X64)
-#define x86_64 1
-#else
-#define x86_64 0
-#endif
-
-#undef x86
-#if defined(__i386__) || defined(__i386) || defined(__X86__) || defined(_M_IX86)
-#define x86 1
-#else
-#define x86 x86_64
-#endif
-
-#if !defined(is_64bit)
-#define is_64bit (x86_64 || (sizeof(void*) == 8))
-#endif
-
-#undef can_use_ssse3
-#if defined(__SSSE3__) || defined(FARMHASH_ASSUME_SSSE3)
-
-#include <immintrin.h>
-#define can_use_ssse3 1
-// Now we can use _mm_hsub_epi16 and so on.
-
-#else
-#define can_use_ssse3 0
-#endif
-
-#undef can_use_sse41
-#if defined(__SSE4_1__) || defined(FARMHASH_ASSUME_SSE41)
-
-#include <immintrin.h>
-#define can_use_sse41 1
-// Now we can use _mm_insert_epi64 and so on.
-
-#else
-#define can_use_sse41 0
-#endif
-
-#undef can_use_sse42
-#if defined(__SSE4_2__) || defined(FARMHASH_ASSUME_SSE42)
-
-#include <nmmintrin.h>
-#define can_use_sse42 1
-// Now we can use _mm_crc32_u{32,16,8}. And on 64-bit platforms, _mm_crc32_u64.
-
-#else
-#define can_use_sse42 0
-#endif
-
-#undef can_use_aesni
-#if defined(__AES__) || defined(FARMHASH_ASSUME_AESNI)
-
-#include <wmmintrin.h>
-#define can_use_aesni 1
-// Now we can use _mm_aesimc_si128 and so on.
-
-#else
-#define can_use_aesni 0
-#endif
-
-#undef can_use_avx
-#if defined(__AVX__) || defined(FARMHASH_ASSUME_AVX)
-
-#include <immintrin.h>
-#define can_use_avx 1
-
-#else
-#define can_use_avx 0
-#endif
-
-#if can_use_ssse3 || can_use_sse41 || can_use_sse42 || can_use_aesni || can_use_avx
-STATIC_INLINE __m128i Fetch128(const char* s) {
- return _mm_loadu_si128(reinterpret_cast<const __m128i*>(s));
-}
-#endif
-// Building blocks for hash functions
-
-// std::swap() was in <algorithm> but is in <utility> from C++11 on.
-#if !FARMHASH_CAN_USE_CXX11
-#include <algorithm>
-#endif
-
-#undef PERMUTE3
-#define PERMUTE3(a, b, c) do { std::swap(a, b); std::swap(a, c); } while (0)
-
-namespace NAMESPACE_FOR_HASH_FUNCTIONS {
-
-// Some primes between 2^63 and 2^64 for various uses.
-static const uint64_t k0 = 0xc3a5c85c97cb3127ULL;
-static const uint64_t k1 = 0xb492b66fbe98f273ULL;
-static const uint64_t k2 = 0x9ae16a3b2f90404fULL;
-
-// Magic numbers for 32-bit hashing. Copied from Murmur3.
-static const uint32_t c1 = 0xcc9e2d51;
-static const uint32_t c2 = 0x1b873593;
-
-// A 32-bit to 32-bit integer hash copied from Murmur3.
-STATIC_INLINE uint32_t fmix(uint32_t h)
-{
- h ^= h >> 16;
- h *= 0x85ebca6b;
- h ^= h >> 13;
- h *= 0xc2b2ae35;
- h ^= h >> 16;
- return h;
-}
-
-STATIC_INLINE uint32_t Mur(uint32_t a, uint32_t h) {
- // Helper from Murmur3 for combining two 32-bit values.
- a *= c1;
- a = Rotate32(a, 17);
- a *= c2;
- h ^= a;
- h = Rotate32(h, 19);
- return h * 5 + 0xe6546b64;
-}
-
-template <typename T> STATIC_INLINE T DebugTweak(T x) {
- if (debug_mode) {
- if (sizeof(x) == 4) {
- x = ~Bswap32(x * c1);
- } else {
- x = ~Bswap64(x * k1);
- }
- }
- return x;
-}
-
-template <> uint128_t DebugTweak(uint128_t x) {
- if (debug_mode) {
- uint64_t y = DebugTweak(Uint128Low64(x));
- uint64_t z = DebugTweak(Uint128High64(x));
- y += z;
- z += y;
- x = Uint128(y, z * k1);
- }
- return x;
-}
-
-} // namespace NAMESPACE_FOR_HASH_FUNCTIONS
-
-using namespace std;
-using namespace NAMESPACE_FOR_HASH_FUNCTIONS;
-namespace farmhashna {
-#undef Fetch
-#define Fetch Fetch64
-
-#undef Rotate
-#define Rotate Rotate64
-
-#undef Bswap
-#define Bswap Bswap64
-
-STATIC_INLINE uint64_t ShiftMix(uint64_t val) {
- return val ^ (val >> 47);
-}
-
-STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v) {
- return Hash128to64(Uint128(u, v));
-}
-
-STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v, uint64_t mul) {
- // Murmur-inspired hashing.
- uint64_t a = (u ^ v) * mul;
- a ^= (a >> 47);
- uint64_t b = (v ^ a) * mul;
- b ^= (b >> 47);
- b *= mul;
- return b;
-}
-
-STATIC_INLINE uint64_t HashLen0to16(const char *s, size_t len) {
- if (len >= 8) {
- uint64_t mul = k2 + len * 2;
- uint64_t a = Fetch(s) + k2;
- uint64_t b = Fetch(s + len - 8);
- uint64_t c = Rotate(b, 37) * mul + a;
- uint64_t d = (Rotate(a, 25) + b) * mul;
- return HashLen16(c, d, mul);
- }
- if (len >= 4) {
- uint64_t mul = k2 + len * 2;
- uint64_t a = Fetch32(s);
- return HashLen16(len + (a << 3), Fetch32(s + len - 4), mul);
- }
- if (len > 0) {
- uint8_t a = s[0];
- uint8_t b = s[len >> 1];
- uint8_t c = s[len - 1];
- uint32_t y = static_cast<uint32_t>(a) + (static_cast<uint32_t>(b) << 8);
- uint32_t z = len + (static_cast<uint32_t>(c) << 2);
- return ShiftMix(y * k2 ^ z * k0) * k2;
- }
- return k2;
-}
-
-// This probably works well for 16-byte strings as well, but it may be overkill
-// in that case.
-STATIC_INLINE uint64_t HashLen17to32(const char *s, size_t len) {
- uint64_t mul = k2 + len * 2;
- uint64_t a = Fetch(s) * k1;
- uint64_t b = Fetch(s + 8);
- uint64_t c = Fetch(s + len - 8) * mul;
- uint64_t d = Fetch(s + len - 16) * k2;
- return HashLen16(Rotate(a + b, 43) + Rotate(c, 30) + d,
- a + Rotate(b + k2, 18) + c, mul);
-}
-
-// Return a 16-byte hash for 48 bytes. Quick and dirty.
-// Callers do best to use "random-looking" values for a and b.
-STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
- uint64_t w, uint64_t x, uint64_t y, uint64_t z, uint64_t a, uint64_t b) {
- a += w;
- b = Rotate(b + a + z, 21);
- uint64_t c = a;
- a += x;
- a += y;
- b += Rotate(a, 44);
- return make_pair(a + z, b + c);
-}
-
-// Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty.
-STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
- const char* s, uint64_t a, uint64_t b) {
- return WeakHashLen32WithSeeds(Fetch(s),
- Fetch(s + 8),
- Fetch(s + 16),
- Fetch(s + 24),
- a,
- b);
-}
-
-// Return an 8-byte hash for 33 to 64 bytes.
-STATIC_INLINE uint64_t HashLen33to64(const char *s, size_t len) {
- uint64_t mul = k2 + len * 2;
- uint64_t a = Fetch(s) * k2;
- uint64_t b = Fetch(s + 8);
- uint64_t c = Fetch(s + len - 8) * mul;
- uint64_t d = Fetch(s + len - 16) * k2;
- uint64_t y = Rotate(a + b, 43) + Rotate(c, 30) + d;
- uint64_t z = HashLen16(y, a + Rotate(b + k2, 18) + c, mul);
- uint64_t e = Fetch(s + 16) * mul;
- uint64_t f = Fetch(s + 24);
- uint64_t g = (y + Fetch(s + len - 32)) * mul;
- uint64_t h = (z + Fetch(s + len - 24)) * mul;
- return HashLen16(Rotate(e + f, 43) + Rotate(g, 30) + h,
- e + Rotate(f + a, 18) + g, mul);
-}
-
-uint64_t Hash64(const char *s, size_t len) {
- const uint64_t seed = 81;
- if (len <= 32) {
- if (len <= 16) {
- return HashLen0to16(s, len);
- } else {
- return HashLen17to32(s, len);
- }
- } else if (len <= 64) {
- return HashLen33to64(s, len);
- }
-
- // For strings over 64 bytes we loop. Internal state consists of
- // 56 bytes: v, w, x, y, and z.
- uint64_t x = seed;
- uint64_t y = seed * k1 + 113;
- uint64_t z = ShiftMix(y * k2 + 113) * k2;
- pair<uint64_t, uint64_t> v = make_pair(0, 0);
- pair<uint64_t, uint64_t> w = make_pair(0, 0);
- x = x * k2 + Fetch(s);
-
- // Set end so that after the loop we have 1 to 64 bytes left to process.
- const char* end = s + ((len - 1) / 64) * 64;
- const char* last64 = end + ((len - 1) & 63) - 63;
- assert(s + len - 64 == last64);
- do {
- x = Rotate(x + y + v.first + Fetch(s + 8), 37) * k1;
- y = Rotate(y + v.second + Fetch(s + 48), 42) * k1;
- x ^= w.second;
- y += v.first + Fetch(s + 40);
- z = Rotate(z + w.first, 33) * k1;
- v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first);
- w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
- std::swap(z, x);
- s += 64;
- } while (s != end);
- uint64_t mul = k1 + ((z & 0xff) << 1);
- // Make s point to the last 64 bytes of input.
- s = last64;
- w.first += ((len - 1) & 63);
- v.first += w.first;
- w.first += v.first;
- x = Rotate(x + y + v.first + Fetch(s + 8), 37) * mul;
- y = Rotate(y + v.second + Fetch(s + 48), 42) * mul;
- x ^= w.second * 9;
- y += v.first * 9 + Fetch(s + 40);
- z = Rotate(z + w.first, 33) * mul;
- v = WeakHashLen32WithSeeds(s, v.second * mul, x + w.first);
- w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
- std::swap(z, x);
- return HashLen16(HashLen16(v.first, w.first, mul) + ShiftMix(y) * k0 + z,
- HashLen16(v.second, w.second, mul) + x,
- mul);
-}
-
-uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1);
-
-uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
- return Hash64WithSeeds(s, len, k2, seed);
-}
-
-uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1) {
- return HashLen16(Hash64(s, len) - seed0, seed1);
-}
-} // namespace farmhashna
-namespace farmhashuo {
-#undef Fetch
-#define Fetch Fetch64
-
-#undef Rotate
-#define Rotate Rotate64
-
-STATIC_INLINE uint64_t H(uint64_t x, uint64_t y, uint64_t mul, int r) {
- uint64_t a = (x ^ y) * mul;
- a ^= (a >> 47);
- uint64_t b = (y ^ a) * mul;
- return Rotate(b, r) * mul;
-}
-
-uint64_t Hash64WithSeeds(const char *s, size_t len,
- uint64_t seed0, uint64_t seed1) {
- if (len <= 64) {
- return farmhashna::Hash64WithSeeds(s, len, seed0, seed1);
- }
-
- // For strings over 64 bytes we loop. Internal state consists of
- // 64 bytes: u, v, w, x, y, and z.
- uint64_t x = seed0;
- uint64_t y = seed1 * k2 + 113;
- uint64_t z = farmhashna::ShiftMix(y * k2) * k2;
- pair<uint64_t, uint64_t> v = make_pair(seed0, seed1);
- pair<uint64_t, uint64_t> w = make_pair(0, 0);
- uint64_t u = x - z;
- x *= k2;
- uint64_t mul = k2 + (u & 0x82);
-
- // Set end so that after the loop we have 1 to 64 bytes left to process.
- const char* end = s + ((len - 1) / 64) * 64;
- const char* last64 = end + ((len - 1) & 63) - 63;
- assert(s + len - 64 == last64);
- do {
- uint64_t a0 = Fetch(s);
- uint64_t a1 = Fetch(s + 8);
- uint64_t a2 = Fetch(s + 16);
- uint64_t a3 = Fetch(s + 24);
- uint64_t a4 = Fetch(s + 32);
- uint64_t a5 = Fetch(s + 40);
- uint64_t a6 = Fetch(s + 48);
- uint64_t a7 = Fetch(s + 56);
- x += a0 + a1;
- y += a2;
- z += a3;
- v.first += a4;
- v.second += a5 + a1;
- w.first += a6;
- w.second += a7;
-
- x = Rotate(x, 26);
- x *= 9;
- y = Rotate(y, 29);
- z *= mul;
- v.first = Rotate(v.first, 33);
- v.second = Rotate(v.second, 30);
- w.first ^= x;
- w.first *= 9;
- z = Rotate(z, 32);
- z += w.second;
- w.second += z;
- z *= 9;
- std::swap(u, y);
-
- z += a0 + a6;
- v.first += a2;
- v.second += a3;
- w.first += a4;
- w.second += a5 + a6;
- x += a1;
- y += a7;
-
- y += v.first;
- v.first += x - y;
- v.second += w.first;
- w.first += v.second;
- w.second += x - y;
- x += w.second;
- w.second = Rotate(w.second, 34);
- std::swap(u, z);
- s += 64;
- } while (s != end);
- // Make s point to the last 64 bytes of input.
- s = last64;
- u *= 9;
- v.second = Rotate(v.second, 28);
- v.first = Rotate(v.first, 20);
- w.first += ((len - 1) & 63);
- u += y;
- y += u;
- x = Rotate(y - x + v.first + Fetch(s + 8), 37) * mul;
- y = Rotate(y ^ v.second ^ Fetch(s + 48), 42) * mul;
- x ^= w.second * 9;
- y += v.first + Fetch(s + 40);
- z = Rotate(z + w.first, 33) * mul;
- v = farmhashna::WeakHashLen32WithSeeds(s, v.second * mul, x + w.first);
- w = farmhashna::WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
- return H(farmhashna::HashLen16(v.first + x, w.first ^ y, mul) + z - u,
- H(v.second + y, w.second + z, k2, 30) ^ x,
- k2,
- 31);
-}
-
-uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
- return len <= 64 ? farmhashna::Hash64WithSeed(s, len, seed) :
- Hash64WithSeeds(s, len, 0, seed);
-}
-
-uint64_t Hash64(const char *s, size_t len) {
- return len <= 64 ? farmhashna::Hash64(s, len) :
- Hash64WithSeeds(s, len, 81, 0);
-}
-} // namespace farmhashuo
-namespace farmhashxo {
-#undef Fetch
-#define Fetch Fetch64
-
-#undef Rotate
-#define Rotate Rotate64
-
-STATIC_INLINE uint64_t H32(const char *s, size_t len, uint64_t mul,
- uint64_t seed0 = 0, uint64_t seed1 = 0) {
- uint64_t a = Fetch(s) * k1;
- uint64_t b = Fetch(s + 8);
- uint64_t c = Fetch(s + len - 8) * mul;
- uint64_t d = Fetch(s + len - 16) * k2;
- uint64_t u = Rotate(a + b, 43) + Rotate(c, 30) + d + seed0;
- uint64_t v = a + Rotate(b + k2, 18) + c + seed1;
- a = farmhashna::ShiftMix((u ^ v) * mul);
- b = farmhashna::ShiftMix((v ^ a) * mul);
- return b;
-}
-
-// Return an 8-byte hash for 33 to 64 bytes.
-STATIC_INLINE uint64_t HashLen33to64(const char *s, size_t len) {
- uint64_t mul0 = k2 - 30;
- uint64_t mul1 = k2 - 30 + 2 * len;
- uint64_t h0 = H32(s, 32, mul0);
- uint64_t h1 = H32(s + len - 32, 32, mul1);
- return ((h1 * mul1) + h0) * mul1;
-}
-
-// Return an 8-byte hash for 65 to 96 bytes.
-STATIC_INLINE uint64_t HashLen65to96(const char *s, size_t len) {
- uint64_t mul0 = k2 - 114;
- uint64_t mul1 = k2 - 114 + 2 * len;
- uint64_t h0 = H32(s, 32, mul0);
- uint64_t h1 = H32(s + 32, 32, mul1);
- uint64_t h2 = H32(s + len - 32, 32, mul1, h0, h1);
- return (h2 * 9 + (h0 >> 17) + (h1 >> 21)) * mul1;
-}
-
-uint64_t Hash64(const char *s, size_t len) {
- if (len <= 32) {
- if (len <= 16) {
- return farmhashna::HashLen0to16(s, len);
- } else {
- return farmhashna::HashLen17to32(s, len);
- }
- } else if (len <= 64) {
- return HashLen33to64(s, len);
- } else if (len <= 96) {
- return HashLen65to96(s, len);
- } else if (len <= 256) {
- return farmhashna::Hash64(s, len);
- } else {
- return farmhashuo::Hash64(s, len);
- }
-}
-
-uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1) {
- return farmhashuo::Hash64WithSeeds(s, len, seed0, seed1);
-}
-
-uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
- return farmhashuo::Hash64WithSeed(s, len, seed);
-}
-} // namespace farmhashxo
-namespace farmhashte {
-#if !can_use_sse41 || !x86_64
-
-uint64_t Hash64(const char *s, size_t len) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return s == NULL ? 0 : len;
-}
-
-uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return seed + Hash64(s, len);
-}
-
-uint64_t Hash64WithSeeds(const char *s, size_t len,
- uint64_t seed0, uint64_t seed1) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return seed0 + seed1 + Hash64(s, len);
-}
-
-#else
-
-#undef Fetch
-#define Fetch Fetch64
-
-#undef Rotate
-#define Rotate Rotate64
-
-#undef Bswap
-#define Bswap Bswap64
-
-// Helpers for data-parallel operations (1x 128 bits or 2x 64 or 4x 32).
-STATIC_INLINE __m128i Add(__m128i x, __m128i y) { return _mm_add_epi64(x, y); }
-STATIC_INLINE __m128i Xor(__m128i x, __m128i y) { return _mm_xor_si128(x, y); }
-STATIC_INLINE __m128i Mul(__m128i x, __m128i y) { return _mm_mullo_epi32(x, y); }
-STATIC_INLINE __m128i Shuf(__m128i x, __m128i y) { return _mm_shuffle_epi8(y, x); }
-
-// Requires n >= 256. Requires SSE4.1. Should be slightly faster if the
-// compiler uses AVX instructions (e.g., use the -mavx flag with GCC).
-STATIC_INLINE uint64_t Hash64Long(const char* s, size_t n,
- uint64_t seed0, uint64_t seed1) {
- const __m128i kShuf =
- _mm_set_epi8(4, 11, 10, 5, 8, 15, 6, 9, 12, 2, 14, 13, 0, 7, 3, 1);
- const __m128i kMult =
- _mm_set_epi8(0xbd, 0xd6, 0x33, 0x39, 0x45, 0x54, 0xfa, 0x03,
- 0x34, 0x3e, 0x33, 0xed, 0xcc, 0x9e, 0x2d, 0x51);
- uint64_t seed2 = (seed0 + 113) * (seed1 + 9);
- uint64_t seed3 = (Rotate(seed0, 23) + 27) * (Rotate(seed1, 30) + 111);
- __m128i d0 = _mm_cvtsi64_si128(seed0);
- __m128i d1 = _mm_cvtsi64_si128(seed1);
- __m128i d2 = Shuf(kShuf, d0);
- __m128i d3 = Shuf(kShuf, d1);
- __m128i d4 = Xor(d0, d1);
- __m128i d5 = Xor(d1, d2);
- __m128i d6 = Xor(d2, d4);
- __m128i d7 = _mm_set1_epi32(seed2 >> 32);
- __m128i d8 = Mul(kMult, d2);
- __m128i d9 = _mm_set1_epi32(seed3 >> 32);
- __m128i d10 = _mm_set1_epi32(seed3);
- __m128i d11 = Add(d2, _mm_set1_epi32(seed2));
- const char* end = s + (n & ~static_cast<size_t>(255));
- do {
- __m128i z;
- z = Fetch128(s);
- d0 = Add(d0, z);
- d1 = Shuf(kShuf, d1);
- d2 = Xor(d2, d0);
- d4 = Xor(d4, z);
- d4 = Xor(d4, d1);
- std::swap(d0, d6);
- z = Fetch128(s + 16);
- d5 = Add(d5, z);
- d6 = Shuf(kShuf, d6);
- d8 = Shuf(kShuf, d8);
- d7 = Xor(d7, d5);
- d0 = Xor(d0, z);
- d0 = Xor(d0, d6);
- std::swap(d5, d11);
- z = Fetch128(s + 32);
- d1 = Add(d1, z);
- d2 = Shuf(kShuf, d2);
- d4 = Shuf(kShuf, d4);
- d5 = Xor(d5, z);
- d5 = Xor(d5, d2);
- std::swap(d10, d4);
- z = Fetch128(s + 48);
- d6 = Add(d6, z);
- d7 = Shuf(kShuf, d7);
- d0 = Shuf(kShuf, d0);
- d8 = Xor(d8, d6);
- d1 = Xor(d1, z);
- d1 = Add(d1, d7);
- z = Fetch128(s + 64);
- d2 = Add(d2, z);
- d5 = Shuf(kShuf, d5);
- d4 = Add(d4, d2);
- d6 = Xor(d6, z);
- d6 = Xor(d6, d11);
- std::swap(d8, d2);
- z = Fetch128(s + 80);
- d7 = Xor(d7, z);
- d8 = Shuf(kShuf, d8);
- d1 = Shuf(kShuf, d1);
- d0 = Add(d0, d7);
- d2 = Add(d2, z);
- d2 = Add(d2, d8);
- std::swap(d1, d7);
- z = Fetch128(s + 96);
- d4 = Shuf(kShuf, d4);
- d6 = Shuf(kShuf, d6);
- d8 = Mul(kMult, d8);
- d5 = Xor(d5, d11);
- d7 = Xor(d7, z);
- d7 = Add(d7, d4);
- std::swap(d6, d0);
- z = Fetch128(s + 112);
- d8 = Add(d8, z);
- d0 = Shuf(kShuf, d0);
- d2 = Shuf(kShuf, d2);
- d1 = Xor(d1, d8);
- d10 = Xor(d10, z);
- d10 = Xor(d10, d0);
- std::swap(d11, d5);
- z = Fetch128(s + 128);
- d4 = Add(d4, z);
- d5 = Shuf(kShuf, d5);
- d7 = Shuf(kShuf, d7);
- d6 = Add(d6, d4);
- d8 = Xor(d8, z);
- d8 = Xor(d8, d5);
- std::swap(d4, d10);
- z = Fetch128(s + 144);
- d0 = Add(d0, z);
- d1 = Shuf(kShuf, d1);
- d2 = Add(d2, d0);
- d4 = Xor(d4, z);
- d4 = Xor(d4, d1);
- z = Fetch128(s + 160);
- d5 = Add(d5, z);
- d6 = Shuf(kShuf, d6);
- d8 = Shuf(kShuf, d8);
- d7 = Xor(d7, d5);
- d0 = Xor(d0, z);
- d0 = Xor(d0, d6);
- std::swap(d2, d8);
- z = Fetch128(s + 176);
- d1 = Add(d1, z);
- d2 = Shuf(kShuf, d2);
- d4 = Shuf(kShuf, d4);
- d5 = Mul(kMult, d5);
- d5 = Xor(d5, z);
- d5 = Xor(d5, d2);
- std::swap(d7, d1);
- z = Fetch128(s + 192);
- d6 = Add(d6, z);
- d7 = Shuf(kShuf, d7);
- d0 = Shuf(kShuf, d0);
- d8 = Add(d8, d6);
- d1 = Xor(d1, z);
- d1 = Xor(d1, d7);
- std::swap(d0, d6);
- z = Fetch128(s + 208);
- d2 = Add(d2, z);
- d5 = Shuf(kShuf, d5);
- d4 = Xor(d4, d2);
- d6 = Xor(d6, z);
- d6 = Xor(d6, d9);
- std::swap(d5, d11);
- z = Fetch128(s + 224);
- d7 = Add(d7, z);
- d8 = Shuf(kShuf, d8);
- d1 = Shuf(kShuf, d1);
- d0 = Xor(d0, d7);
- d2 = Xor(d2, z);
- d2 = Xor(d2, d8);
- std::swap(d10, d4);
- z = Fetch128(s + 240);
- d3 = Add(d3, z);
- d4 = Shuf(kShuf, d4);
- d6 = Shuf(kShuf, d6);
- d7 = Mul(kMult, d7);
- d5 = Add(d5, d3);
- d7 = Xor(d7, z);
- d7 = Xor(d7, d4);
- std::swap(d3, d9);
- s += 256;
- } while (s != end);
- d6 = Add(Mul(kMult, d6), _mm_cvtsi64_si128(n));
- if (n % 256 != 0) {
- d7 = Add(_mm_shuffle_epi32(d8, (0 << 6) + (3 << 4) + (2 << 2) + (1 << 0)), d7);
- d8 = Add(Mul(kMult, d8), _mm_cvtsi64_si128(farmhashxo::Hash64(s, n % 256)));
- }
- __m128i t[8];
- d0 = Mul(kMult, Shuf(kShuf, Mul(kMult, d0)));
- d3 = Mul(kMult, Shuf(kShuf, Mul(kMult, d3)));
- d9 = Mul(kMult, Shuf(kShuf, Mul(kMult, d9)));
- d1 = Mul(kMult, Shuf(kShuf, Mul(kMult, d1)));
- d0 = Add(d11, d0);
- d3 = Xor(d7, d3);
- d9 = Add(d8, d9);
- d1 = Add(d10, d1);
- d4 = Add(d3, d4);
- d5 = Add(d9, d5);
- d6 = Xor(d1, d6);
- d2 = Add(d0, d2);
- t[0] = d0;
- t[1] = d3;
- t[2] = d9;
- t[3] = d1;
- t[4] = d4;
- t[5] = d5;
- t[6] = d6;
- t[7] = d2;
- return farmhashxo::Hash64(reinterpret_cast<const char*>(t), sizeof(t));
-}
-
-uint64_t Hash64(const char *s, size_t len) {
- // Empirically, farmhashxo seems faster until length 512.
- return len >= 512 ? Hash64Long(s, len, k2, k1) : farmhashxo::Hash64(s, len);
-}
-
-uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
- return len >= 512 ? Hash64Long(s, len, k1, seed) :
- farmhashxo::Hash64WithSeed(s, len, seed);
-}
-
-uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1) {
- return len >= 512 ? Hash64Long(s, len, seed0, seed1) :
- farmhashxo::Hash64WithSeeds(s, len, seed0, seed1);
-}
-
-#endif
-} // namespace farmhashte
-namespace farmhashnt {
-#if !can_use_sse41 || !x86_64
-
-uint32_t Hash32(const char *s, size_t len) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return s == NULL ? 0 : len;
-}
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return seed + Hash32(s, len);
-}
-
-#else
-
-uint32_t Hash32(const char *s, size_t len) {
- return static_cast<uint32_t>(farmhashte::Hash64(s, len));
-}
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- return static_cast<uint32_t>(farmhashte::Hash64WithSeed(s, len, seed));
-}
-
-#endif
-} // namespace farmhashnt
-namespace farmhashmk {
-#undef Fetch
-#define Fetch Fetch32
-
-#undef Rotate
-#define Rotate Rotate32
-
-#undef Bswap
-#define Bswap Bswap32
-
-STATIC_INLINE uint32_t Hash32Len13to24(const char *s, size_t len, uint32_t seed = 0) {
- uint32_t a = Fetch(s - 4 + (len >> 1));
- uint32_t b = Fetch(s + 4);
- uint32_t c = Fetch(s + len - 8);
- uint32_t d = Fetch(s + (len >> 1));
- uint32_t e = Fetch(s);
- uint32_t f = Fetch(s + len - 4);
- uint32_t h = d * c1 + len + seed;
- a = Rotate(a, 12) + f;
- h = Mur(c, h) + a;
- a = Rotate(a, 3) + c;
- h = Mur(e, h) + a;
- a = Rotate(a + f, 12) + d;
- h = Mur(b ^ seed, h) + a;
- return fmix(h);
-}
-
-STATIC_INLINE uint32_t Hash32Len0to4(const char *s, size_t len, uint32_t seed = 0) {
- uint32_t b = seed;
- uint32_t c = 9;
- for (size_t i = 0; i < len; i++) {
- signed char v = s[i];
- b = b * c1 + v;
- c ^= b;
- }
- return fmix(Mur(b, Mur(len, c)));
-}
-
-STATIC_INLINE uint32_t Hash32Len5to12(const char *s, size_t len, uint32_t seed = 0) {
- uint32_t a = len, b = len * 5, c = 9, d = b + seed;
- a += Fetch(s);
- b += Fetch(s + len - 4);
- c += Fetch(s + ((len >> 1) & 4));
- return fmix(seed ^ Mur(c, Mur(b, Mur(a, d))));
-}
-
-uint32_t Hash32(const char *s, size_t len) {
- if (len <= 24) {
- return len <= 12 ?
- (len <= 4 ? Hash32Len0to4(s, len) : Hash32Len5to12(s, len)) :
- Hash32Len13to24(s, len);
- }
-
- // len > 24
- uint32_t h = len, g = c1 * len, f = g;
- uint32_t a0 = Rotate(Fetch(s + len - 4) * c1, 17) * c2;
- uint32_t a1 = Rotate(Fetch(s + len - 8) * c1, 17) * c2;
- uint32_t a2 = Rotate(Fetch(s + len - 16) * c1, 17) * c2;
- uint32_t a3 = Rotate(Fetch(s + len - 12) * c1, 17) * c2;
- uint32_t a4 = Rotate(Fetch(s + len - 20) * c1, 17) * c2;
- h ^= a0;
- h = Rotate(h, 19);
- h = h * 5 + 0xe6546b64;
- h ^= a2;
- h = Rotate(h, 19);
- h = h * 5 + 0xe6546b64;
- g ^= a1;
- g = Rotate(g, 19);
- g = g * 5 + 0xe6546b64;
- g ^= a3;
- g = Rotate(g, 19);
- g = g * 5 + 0xe6546b64;
- f += a4;
- f = Rotate(f, 19) + 113;
- size_t iters = (len - 1) / 20;
- do {
- uint32_t a = Fetch(s);
- uint32_t b = Fetch(s + 4);
- uint32_t c = Fetch(s + 8);
- uint32_t d = Fetch(s + 12);
- uint32_t e = Fetch(s + 16);
- h += a;
- g += b;
- f += c;
- h = Mur(d, h) + e;
- g = Mur(c, g) + a;
- f = Mur(b + e * c1, f) + d;
- f += g;
- g += f;
- s += 20;
- } while (--iters != 0);
- g = Rotate(g, 11) * c1;
- g = Rotate(g, 17) * c1;
- f = Rotate(f, 11) * c1;
- f = Rotate(f, 17) * c1;
- h = Rotate(h + g, 19);
- h = h * 5 + 0xe6546b64;
- h = Rotate(h, 17) * c1;
- h = Rotate(h + f, 19);
- h = h * 5 + 0xe6546b64;
- h = Rotate(h, 17) * c1;
- return h;
-}
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- if (len <= 24) {
- if (len >= 13) return Hash32Len13to24(s, len, seed * c1);
- else if (len >= 5) return Hash32Len5to12(s, len, seed);
- else return Hash32Len0to4(s, len, seed);
- }
- uint32_t h = Hash32Len13to24(s, 24, seed ^ len);
- return Mur(Hash32(s + 24, len - 24) + seed, h);
-}
-} // namespace farmhashmk
-namespace farmhashsu {
-#if !can_use_sse42 || !can_use_aesni
-
-uint32_t Hash32(const char *s, size_t len) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return s == NULL ? 0 : len;
-}
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return seed + Hash32(s, len);
-}
-
-#else
-
-#undef Fetch
-#define Fetch Fetch32
-
-#undef Rotate
-#define Rotate Rotate32
-
-#undef Bswap
-#define Bswap Bswap32
-
-// Helpers for data-parallel operations (4x 32-bits).
-STATIC_INLINE __m128i Add(__m128i x, __m128i y) { return _mm_add_epi32(x, y); }
-STATIC_INLINE __m128i Xor(__m128i x, __m128i y) { return _mm_xor_si128(x, y); }
-STATIC_INLINE __m128i Or(__m128i x, __m128i y) { return _mm_or_si128(x, y); }
-STATIC_INLINE __m128i Mul(__m128i x, __m128i y) { return _mm_mullo_epi32(x, y); }
-STATIC_INLINE __m128i Mul5(__m128i x) { return Add(x, _mm_slli_epi32(x, 2)); }
-STATIC_INLINE __m128i RotateLeft(__m128i x, int c) {
- return Or(_mm_slli_epi32(x, c),
- _mm_srli_epi32(x, 32 - c));
-}
-STATIC_INLINE __m128i Rol17(__m128i x) { return RotateLeft(x, 17); }
-STATIC_INLINE __m128i Rol19(__m128i x) { return RotateLeft(x, 19); }
-STATIC_INLINE __m128i Shuffle0321(__m128i x) {
- return _mm_shuffle_epi32(x, (0 << 6) + (3 << 4) + (2 << 2) + (1 << 0));
-}
-
-uint32_t Hash32(const char *s, size_t len) {
- const uint32_t seed = 81;
- if (len <= 24) {
- return len <= 12 ?
- (len <= 4 ?
- farmhashmk::Hash32Len0to4(s, len) :
- farmhashmk::Hash32Len5to12(s, len)) :
- farmhashmk::Hash32Len13to24(s, len);
- }
-
- if (len < 40) {
- uint32_t a = len, b = seed * c2, c = a + b;
- a += Fetch(s + len - 4);
- b += Fetch(s + len - 20);
- c += Fetch(s + len - 16);
- uint32_t d = a;
- a = NAMESPACE_FOR_HASH_FUNCTIONS::Rotate32(a, 21);
- a = Mur(a, Mur(b, _mm_crc32_u32(c, d)));
- a += Fetch(s + len - 12);
- b += Fetch(s + len - 8);
- d += a;
- a += d;
- b = Mur(b, d) * c2;
- a = _mm_crc32_u32(a, b + c);
- return farmhashmk::Hash32Len13to24(s, (len + 1) / 2, a) + b;
- }
-
-#undef Mulc1
-#define Mulc1(x) Mul((x), cc1)
-
-#undef Mulc2
-#define Mulc2(x) Mul((x), cc2)
-
-#undef Murk
-#define Murk(a, h) \
- Add(k, \
- Mul5( \
- Rol19( \
- Xor( \
- Mulc2( \
- Rol17( \
- Mulc1(a))), \
- (h)))))
-
- const __m128i cc1 = _mm_set1_epi32(c1);
- const __m128i cc2 = _mm_set1_epi32(c2);
- __m128i h = _mm_set1_epi32(seed);
- __m128i g = _mm_set1_epi32(c1 * seed);
- __m128i f = g;
- __m128i k = _mm_set1_epi32(0xe6546b64);
- __m128i q;
- if (len < 80) {
- __m128i a = Fetch128(s);
- __m128i b = Fetch128(s + 16);
- __m128i c = Fetch128(s + (len - 15) / 2);
- __m128i d = Fetch128(s + len - 32);
- __m128i e = Fetch128(s + len - 16);
- h = Add(h, a);
- g = Add(g, b);
- q = g;
- g = Shuffle0321(g);
- f = Add(f, c);
- __m128i be = Add(b, Mulc1(e));
- h = Add(h, f);
- f = Add(f, h);
- h = Add(Murk(d, h), e);
- k = Xor(k, _mm_shuffle_epi8(g, f));
- g = Add(Xor(c, g), a);
- f = Add(Xor(be, f), d);
- k = Add(k, be);
- k = Add(k, _mm_shuffle_epi8(f, h));
- f = Add(f, g);
- g = Add(g, f);
- g = Add(_mm_set1_epi32(len), Mulc1(g));
- } else {
- // len >= 80
- // The following is loosely modelled after farmhashmk::Hash32.
- size_t iters = (len - 1) / 80;
- len -= iters * 80;
-
-#undef Chunk
-#define Chunk() do { \
- __m128i a = Fetch128(s); \
- __m128i b = Fetch128(s + 16); \
- __m128i c = Fetch128(s + 32); \
- __m128i d = Fetch128(s + 48); \
- __m128i e = Fetch128(s + 64); \
- h = Add(h, a); \
- g = Add(g, b); \
- g = Shuffle0321(g); \
- f = Add(f, c); \
- __m128i be = Add(b, Mulc1(e)); \
- h = Add(h, f); \
- f = Add(f, h); \
- h = Add(h, d); \
- q = Add(q, e); \
- h = Rol17(h); \
- h = Mulc1(h); \
- k = Xor(k, _mm_shuffle_epi8(g, f)); \
- g = Add(Xor(c, g), a); \
- f = Add(Xor(be, f), d); \
- std::swap(f, q); \
- q = _mm_aesimc_si128(q); \
- k = Add(k, be); \
- k = Add(k, _mm_shuffle_epi8(f, h)); \
- f = Add(f, g); \
- g = Add(g, f); \
- f = Mulc1(f); \
-} while (0)
-
- q = g;
- while (iters-- != 0) {
- Chunk();
- s += 80;
- }
-
- if (len != 0) {
- h = Add(h, _mm_set1_epi32(len));
- s = s + len - 80;
- Chunk();
- }
- }
-
- g = Shuffle0321(g);
- k = Xor(k, g);
- k = Xor(k, q);
- h = Xor(h, q);
- f = Mulc1(f);
- k = Mulc2(k);
- g = Mulc1(g);
- h = Mulc2(h);
- k = Add(k, _mm_shuffle_epi8(g, f));
- h = Add(h, f);
- f = Add(f, h);
- g = Add(g, k);
- k = Add(k, g);
- k = Xor(k, _mm_shuffle_epi8(f, h));
- __m128i buf[4];
- buf[0] = f;
- buf[1] = g;
- buf[2] = k;
- buf[3] = h;
- s = reinterpret_cast<char*>(buf);
- uint32_t x = Fetch(s);
- uint32_t y = Fetch(s+4);
- uint32_t z = Fetch(s+8);
- x = _mm_crc32_u32(x, Fetch(s+12));
- y = _mm_crc32_u32(y, Fetch(s+16));
- z = _mm_crc32_u32(z * c1, Fetch(s+20));
- x = _mm_crc32_u32(x, Fetch(s+24));
- y = _mm_crc32_u32(y * c1, Fetch(s+28));
- uint32_t o = y;
- z = _mm_crc32_u32(z, Fetch(s+32));
- x = _mm_crc32_u32(x * c1, Fetch(s+36));
- y = _mm_crc32_u32(y, Fetch(s+40));
- z = _mm_crc32_u32(z * c1, Fetch(s+44));
- x = _mm_crc32_u32(x, Fetch(s+48));
- y = _mm_crc32_u32(y * c1, Fetch(s+52));
- z = _mm_crc32_u32(z, Fetch(s+56));
- x = _mm_crc32_u32(x, Fetch(s+60));
- return (o - x + y - z) * c1;
-}
-
-#undef Chunk
-#undef Murk
-#undef Mulc2
-#undef Mulc1
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- if (len <= 24) {
- if (len >= 13) return farmhashmk::Hash32Len13to24(s, len, seed * c1);
- else if (len >= 5) return farmhashmk::Hash32Len5to12(s, len, seed);
- else return farmhashmk::Hash32Len0to4(s, len, seed);
- }
- uint32_t h = farmhashmk::Hash32Len13to24(s, 24, seed ^ len);
- return _mm_crc32_u32(Hash32(s + 24, len - 24) + seed, h);
-}
-
-#endif
-} // namespace farmhashsu
-namespace farmhashsa {
-#if !can_use_sse42
-
-uint32_t Hash32(const char *s, size_t len) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return s == NULL ? 0 : len;
-}
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- FARMHASH_DIE_IF_MISCONFIGURED;
- return seed + Hash32(s, len);
-}
-
-#else
-
-#undef Fetch
-#define Fetch Fetch32
-
-#undef Rotate
-#define Rotate Rotate32
-
-#undef Bswap
-#define Bswap Bswap32
-
-// Helpers for data-parallel operations (4x 32-bits).
-STATIC_INLINE __m128i Add(__m128i x, __m128i y) { return _mm_add_epi32(x, y); }
-STATIC_INLINE __m128i Xor(__m128i x, __m128i y) { return _mm_xor_si128(x, y); }
-STATIC_INLINE __m128i Or(__m128i x, __m128i y) { return _mm_or_si128(x, y); }
-STATIC_INLINE __m128i Mul(__m128i x, __m128i y) { return _mm_mullo_epi32(x, y); }
-STATIC_INLINE __m128i Mul5(__m128i x) { return Add(x, _mm_slli_epi32(x, 2)); }
-STATIC_INLINE __m128i Rotate(__m128i x, int c) {
- return Or(_mm_slli_epi32(x, c),
- _mm_srli_epi32(x, 32 - c));
-}
-STATIC_INLINE __m128i Rot17(__m128i x) { return Rotate(x, 17); }
-STATIC_INLINE __m128i Rot19(__m128i x) { return Rotate(x, 19); }
-STATIC_INLINE __m128i Shuffle0321(__m128i x) {
- return _mm_shuffle_epi32(x, (0 << 6) + (3 << 4) + (2 << 2) + (1 << 0));
-}
-
-uint32_t Hash32(const char *s, size_t len) {
- const uint32_t seed = 81;
- if (len <= 24) {
- return len <= 12 ?
- (len <= 4 ?
- farmhashmk::Hash32Len0to4(s, len) :
- farmhashmk::Hash32Len5to12(s, len)) :
- farmhashmk::Hash32Len13to24(s, len);
- }
-
- if (len < 40) {
- uint32_t a = len, b = seed * c2, c = a + b;
- a += Fetch(s + len - 4);
- b += Fetch(s + len - 20);
- c += Fetch(s + len - 16);
- uint32_t d = a;
- a = NAMESPACE_FOR_HASH_FUNCTIONS::Rotate32(a, 21);
- a = Mur(a, Mur(b, Mur(c, d)));
- a += Fetch(s + len - 12);
- b += Fetch(s + len - 8);
- d += a;
- a += d;
- b = Mur(b, d) * c2;
- a = _mm_crc32_u32(a, b + c);
- return farmhashmk::Hash32Len13to24(s, (len + 1) / 2, a) + b;
- }
-
-#undef Mulc1
-#define Mulc1(x) Mul((x), cc1)
-
-#undef Mulc2
-#define Mulc2(x) Mul((x), cc2)
-
-#undef Murk
-#define Murk(a, h) \
- Add(k, \
- Mul5( \
- Rot19( \
- Xor( \
- Mulc2( \
- Rot17( \
- Mulc1(a))), \
- (h)))))
-
- const __m128i cc1 = _mm_set1_epi32(c1);
- const __m128i cc2 = _mm_set1_epi32(c2);
- __m128i h = _mm_set1_epi32(seed);
- __m128i g = _mm_set1_epi32(c1 * seed);
- __m128i f = g;
- __m128i k = _mm_set1_epi32(0xe6546b64);
- if (len < 80) {
- __m128i a = Fetch128(s);
- __m128i b = Fetch128(s + 16);
- __m128i c = Fetch128(s + (len - 15) / 2);
- __m128i d = Fetch128(s + len - 32);
- __m128i e = Fetch128(s + len - 16);
- h = Add(h, a);
- g = Add(g, b);
- g = Shuffle0321(g);
- f = Add(f, c);
- __m128i be = Add(b, Mulc1(e));
- h = Add(h, f);
- f = Add(f, h);
- h = Add(Murk(d, h), e);
- k = Xor(k, _mm_shuffle_epi8(g, f));
- g = Add(Xor(c, g), a);
- f = Add(Xor(be, f), d);
- k = Add(k, be);
- k = Add(k, _mm_shuffle_epi8(f, h));
- f = Add(f, g);
- g = Add(g, f);
- g = Add(_mm_set1_epi32(len), Mulc1(g));
- } else {
- // len >= 80
- // The following is loosely modelled after farmhashmk::Hash32.
- size_t iters = (len - 1) / 80;
- len -= iters * 80;
-
-#undef Chunk
-#define Chunk() do { \
- __m128i a = Fetch128(s); \
- __m128i b = Fetch128(s + 16); \
- __m128i c = Fetch128(s + 32); \
- __m128i d = Fetch128(s + 48); \
- __m128i e = Fetch128(s + 64); \
- h = Add(h, a); \
- g = Add(g, b); \
- g = Shuffle0321(g); \
- f = Add(f, c); \
- __m128i be = Add(b, Mulc1(e)); \
- h = Add(h, f); \
- f = Add(f, h); \
- h = Add(Murk(d, h), e); \
- k = Xor(k, _mm_shuffle_epi8(g, f)); \
- g = Add(Xor(c, g), a); \
- f = Add(Xor(be, f), d); \
- k = Add(k, be); \
- k = Add(k, _mm_shuffle_epi8(f, h)); \
- f = Add(f, g); \
- g = Add(g, f); \
- f = Mulc1(f); \
-} while (0)
-
- while (iters-- != 0) {
- Chunk();
- s += 80;
- }
-
- if (len != 0) {
- h = Add(h, _mm_set1_epi32(len));
- s = s + len - 80;
- Chunk();
- }
- }
-
- g = Shuffle0321(g);
- k = Xor(k, g);
- f = Mulc1(f);
- k = Mulc2(k);
- g = Mulc1(g);
- h = Mulc2(h);
- k = Add(k, _mm_shuffle_epi8(g, f));
- h = Add(h, f);
- f = Add(f, h);
- g = Add(g, k);
- k = Add(k, g);
- k = Xor(k, _mm_shuffle_epi8(f, h));
- __m128i buf[4];
- buf[0] = f;
- buf[1] = g;
- buf[2] = k;
- buf[3] = h;
- s = reinterpret_cast<char*>(buf);
- uint32_t x = Fetch(s);
- uint32_t y = Fetch(s+4);
- uint32_t z = Fetch(s+8);
- x = _mm_crc32_u32(x, Fetch(s+12));
- y = _mm_crc32_u32(y, Fetch(s+16));
- z = _mm_crc32_u32(z * c1, Fetch(s+20));
- x = _mm_crc32_u32(x, Fetch(s+24));
- y = _mm_crc32_u32(y * c1, Fetch(s+28));
- uint32_t o = y;
- z = _mm_crc32_u32(z, Fetch(s+32));
- x = _mm_crc32_u32(x * c1, Fetch(s+36));
- y = _mm_crc32_u32(y, Fetch(s+40));
- z = _mm_crc32_u32(z * c1, Fetch(s+44));
- x = _mm_crc32_u32(x, Fetch(s+48));
- y = _mm_crc32_u32(y * c1, Fetch(s+52));
- z = _mm_crc32_u32(z, Fetch(s+56));
- x = _mm_crc32_u32(x, Fetch(s+60));
- return (o - x + y - z) * c1;
-}
-
-#undef Chunk
-#undef Murk
-#undef Mulc2
-#undef Mulc1
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- if (len <= 24) {
- if (len >= 13) return farmhashmk::Hash32Len13to24(s, len, seed * c1);
- else if (len >= 5) return farmhashmk::Hash32Len5to12(s, len, seed);
- else return farmhashmk::Hash32Len0to4(s, len, seed);
- }
- uint32_t h = farmhashmk::Hash32Len13to24(s, 24, seed ^ len);
- return _mm_crc32_u32(Hash32(s + 24, len - 24) + seed, h);
-}
-
-#endif
-} // namespace farmhashsa
-namespace farmhashcc {
-// This file provides a 32-bit hash equivalent to CityHash32 (v1.1.1)
-// and a 128-bit hash equivalent to CityHash128 (v1.1.1). It also provides
-// a seeded 32-bit hash function similar to CityHash32.
-
-#undef Fetch
-#define Fetch Fetch32
-
-#undef Rotate
-#define Rotate Rotate32
-
-#undef Bswap
-#define Bswap Bswap32
-
-STATIC_INLINE uint32_t Hash32Len13to24(const char *s, size_t len) {
- uint32_t a = Fetch(s - 4 + (len >> 1));
- uint32_t b = Fetch(s + 4);
- uint32_t c = Fetch(s + len - 8);
- uint32_t d = Fetch(s + (len >> 1));
- uint32_t e = Fetch(s);
- uint32_t f = Fetch(s + len - 4);
- uint32_t h = len;
-
- return fmix(Mur(f, Mur(e, Mur(d, Mur(c, Mur(b, Mur(a, h)))))));
-}
-
-STATIC_INLINE uint32_t Hash32Len0to4(const char *s, size_t len) {
- uint32_t b = 0;
- uint32_t c = 9;
- for (size_t i = 0; i < len; i++) {
- signed char v = s[i];
- b = b * c1 + v;
- c ^= b;
- }
- return fmix(Mur(b, Mur(len, c)));
-}
-
-STATIC_INLINE uint32_t Hash32Len5to12(const char *s, size_t len) {
- uint32_t a = len, b = len * 5, c = 9, d = b;
- a += Fetch(s);
- b += Fetch(s + len - 4);
- c += Fetch(s + ((len >> 1) & 4));
- return fmix(Mur(c, Mur(b, Mur(a, d))));
-}
-
-uint32_t Hash32(const char *s, size_t len) {
- if (len <= 24) {
- return len <= 12 ?
- (len <= 4 ? Hash32Len0to4(s, len) : Hash32Len5to12(s, len)) :
- Hash32Len13to24(s, len);
- }
-
- // len > 24
- uint32_t h = len, g = c1 * len, f = g;
- uint32_t a0 = Rotate(Fetch(s + len - 4) * c1, 17) * c2;
- uint32_t a1 = Rotate(Fetch(s + len - 8) * c1, 17) * c2;
- uint32_t a2 = Rotate(Fetch(s + len - 16) * c1, 17) * c2;
- uint32_t a3 = Rotate(Fetch(s + len - 12) * c1, 17) * c2;
- uint32_t a4 = Rotate(Fetch(s + len - 20) * c1, 17) * c2;
- h ^= a0;
- h = Rotate(h, 19);
- h = h * 5 + 0xe6546b64;
- h ^= a2;
- h = Rotate(h, 19);
- h = h * 5 + 0xe6546b64;
- g ^= a1;
- g = Rotate(g, 19);
- g = g * 5 + 0xe6546b64;
- g ^= a3;
- g = Rotate(g, 19);
- g = g * 5 + 0xe6546b64;
- f += a4;
- f = Rotate(f, 19);
- f = f * 5 + 0xe6546b64;
- size_t iters = (len - 1) / 20;
- do {
- uint32_t a0 = Rotate(Fetch(s) * c1, 17) * c2;
- uint32_t a1 = Fetch(s + 4);
- uint32_t a2 = Rotate(Fetch(s + 8) * c1, 17) * c2;
- uint32_t a3 = Rotate(Fetch(s + 12) * c1, 17) * c2;
- uint32_t a4 = Fetch(s + 16);
- h ^= a0;
- h = Rotate(h, 18);
- h = h * 5 + 0xe6546b64;
- f += a1;
- f = Rotate(f, 19);
- f = f * c1;
- g += a2;
- g = Rotate(g, 18);
- g = g * 5 + 0xe6546b64;
- h ^= a3 + a1;
- h = Rotate(h, 19);
- h = h * 5 + 0xe6546b64;
- g ^= a4;
- g = Bswap(g) * 5;
- h += a4 * 5;
- h = Bswap(h);
- f += a0;
- PERMUTE3(f, h, g);
- s += 20;
- } while (--iters != 0);
- g = Rotate(g, 11) * c1;
- g = Rotate(g, 17) * c1;
- f = Rotate(f, 11) * c1;
- f = Rotate(f, 17) * c1;
- h = Rotate(h + g, 19);
- h = h * 5 + 0xe6546b64;
- h = Rotate(h, 17) * c1;
- h = Rotate(h + f, 19);
- h = h * 5 + 0xe6546b64;
- h = Rotate(h, 17) * c1;
- return h;
-}
-
-uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
- if (len <= 24) {
- if (len >= 13) return farmhashmk::Hash32Len13to24(s, len, seed * c1);
- else if (len >= 5) return farmhashmk::Hash32Len5to12(s, len, seed);
- else return farmhashmk::Hash32Len0to4(s, len, seed);
- }
- uint32_t h = farmhashmk::Hash32Len13to24(s, 24, seed ^ len);
- return Mur(Hash32(s + 24, len - 24) + seed, h);
-}
-
-#undef Fetch
-#define Fetch Fetch64
-
-#undef Rotate
-#define Rotate Rotate64
-
-#undef Bswap
-#define Bswap Bswap64
-
-STATIC_INLINE uint64_t ShiftMix(uint64_t val) {
- return val ^ (val >> 47);
-}
-
-STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v) {
- return Hash128to64(Uint128(u, v));
-}
-
-STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v, uint64_t mul) {
- // Murmur-inspired hashing.
- uint64_t a = (u ^ v) * mul;
- a ^= (a >> 47);
- uint64_t b = (v ^ a) * mul;
- b ^= (b >> 47);
- b *= mul;
- return b;
-}
-
-STATIC_INLINE uint64_t HashLen0to16(const char *s, size_t len) {
- if (len >= 8) {
- uint64_t mul = k2 + len * 2;
- uint64_t a = Fetch(s) + k2;
- uint64_t b = Fetch(s + len - 8);
- uint64_t c = Rotate(b, 37) * mul + a;
- uint64_t d = (Rotate(a, 25) + b) * mul;
- return HashLen16(c, d, mul);
- }
- if (len >= 4) {
- uint64_t mul = k2 + len * 2;
- uint64_t a = Fetch32(s);
- return HashLen16(len + (a << 3), Fetch32(s + len - 4), mul);
- }
- if (len > 0) {
- uint8_t a = s[0];
- uint8_t b = s[len >> 1];
- uint8_t c = s[len - 1];
- uint32_t y = static_cast<uint32_t>(a) + (static_cast<uint32_t>(b) << 8);
- uint32_t z = len + (static_cast<uint32_t>(c) << 2);
- return ShiftMix(y * k2 ^ z * k0) * k2;
- }
- return k2;
-}
-
-// Return a 16-byte hash for 48 bytes. Quick and dirty.
-// Callers do best to use "random-looking" values for a and b.
-STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
- uint64_t w, uint64_t x, uint64_t y, uint64_t z, uint64_t a, uint64_t b) {
- a += w;
- b = Rotate(b + a + z, 21);
- uint64_t c = a;
- a += x;
- a += y;
- b += Rotate(a, 44);
- return make_pair(a + z, b + c);
-}
-
-// Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty.
-STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
- const char* s, uint64_t a, uint64_t b) {
- return WeakHashLen32WithSeeds(Fetch(s),
- Fetch(s + 8),
- Fetch(s + 16),
- Fetch(s + 24),
- a,
- b);
-}
-
-
-
-// A subroutine for CityHash128(). Returns a decent 128-bit hash for strings
-// of any length representable in signed long. Based on City and Murmur.
-STATIC_INLINE uint128_t CityMurmur(const char *s, size_t len, uint128_t seed) {
- uint64_t a = Uint128Low64(seed);
- uint64_t b = Uint128High64(seed);
- uint64_t c = 0;
- uint64_t d = 0;
- signed long l = len - 16;
- if (l <= 0) { // len <= 16
- a = ShiftMix(a * k1) * k1;
- c = b * k1 + HashLen0to16(s, len);
- d = ShiftMix(a + (len >= 8 ? Fetch(s) : c));
- } else { // len > 16
- c = HashLen16(Fetch(s + len - 8) + k1, a);
- d = HashLen16(b + len, c + Fetch(s + len - 16));
- a += d;
- do {
- a ^= ShiftMix(Fetch(s) * k1) * k1;
- a *= k1;
- b ^= a;
- c ^= ShiftMix(Fetch(s + 8) * k1) * k1;
- c *= k1;
- d ^= c;
- s += 16;
- l -= 16;
- } while (l > 0);
- }
- a = HashLen16(a, c);
- b = HashLen16(d, b);
- return uint128_t(a ^ b, HashLen16(b, a));
-}
-
-uint128_t CityHash128WithSeed(const char *s, size_t len, uint128_t seed) {
- if (len < 128) {
- return CityMurmur(s, len, seed);
- }
-
- // We expect len >= 128 to be the common case. Keep 56 bytes of state:
- // v, w, x, y, and z.
- pair<uint64_t, uint64_t> v, w;
- uint64_t x = Uint128Low64(seed);
- uint64_t y = Uint128High64(seed);
- uint64_t z = len * k1;
- v.first = Rotate(y ^ k1, 49) * k1 + Fetch(s);
- v.second = Rotate(v.first, 42) * k1 + Fetch(s + 8);
- w.first = Rotate(y + z, 35) * k1 + x;
- w.second = Rotate(x + Fetch(s + 88), 53) * k1;
-
- // This is the same inner loop as CityHash64(), manually unrolled.
- do {
- x = Rotate(x + y + v.first + Fetch(s + 8), 37) * k1;
- y = Rotate(y + v.second + Fetch(s + 48), 42) * k1;
- x ^= w.second;
- y += v.first + Fetch(s + 40);
- z = Rotate(z + w.first, 33) * k1;
- v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first);
- w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
- std::swap(z, x);
- s += 64;
- x = Rotate(x + y + v.first + Fetch(s + 8), 37) * k1;
- y = Rotate(y + v.second + Fetch(s + 48), 42) * k1;
- x ^= w.second;
- y += v.first + Fetch(s + 40);
- z = Rotate(z + w.first, 33) * k1;
- v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first);
- w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
- std::swap(z, x);
- s += 64;
- len -= 128;
- } while (LIKELY(len >= 128));
- x += Rotate(v.first + z, 49) * k0;
- y = y * k0 + Rotate(w.second, 37);
- z = z * k0 + Rotate(w.first, 27);
- w.first *= 9;
- v.first *= k0;
- // If 0 < len < 128, hash up to 4 chunks of 32 bytes each from the end of s.
- for (size_t tail_done = 0; tail_done < len; ) {
- tail_done += 32;
- y = Rotate(x + y, 42) * k0 + v.second;
- w.first += Fetch(s + len - tail_done + 16);
- x = x * k0 + w.first;
- z += w.second + Fetch(s + len - tail_done);
- w.second += v.first;
- v = WeakHashLen32WithSeeds(s + len - tail_done, v.first + z, v.second);
- v.first *= k0;
- }
- // At this point our 56 bytes of state should contain more than
- // enough information for a strong 128-bit hash. We use two
- // different 56-byte-to-8-byte hashes to get a 16-byte final result.
- x = HashLen16(x, v.first);
- y = HashLen16(y + z, w.first);
- return uint128_t(HashLen16(x + v.second, w.second) + y,
- HashLen16(x + w.second, y + v.second));
-}
-
-STATIC_INLINE uint128_t CityHash128(const char *s, size_t len) {
- return len >= 16 ?
- CityHash128WithSeed(s + 16, len - 16,
- uint128_t(Fetch(s), Fetch(s + 8) + k0)) :
- CityHash128WithSeed(s, len, uint128_t(k0, k1));
-}
-
-uint128_t Fingerprint128(const char* s, size_t len) {
- return CityHash128(s, len);
-}
-} // namespace farmhashcc
-namespace NAMESPACE_FOR_HASH_FUNCTIONS {
-
-// BASIC STRING HASHING
-
-// Hash function for a byte array. See also Hash(), below.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-uint32_t Hash32(const char* s, size_t len) {
- return DebugTweak(
- (can_use_sse41 & x86_64) ? farmhashnt::Hash32(s, len) :
- (can_use_sse42 & can_use_aesni) ? farmhashsu::Hash32(s, len) :
- can_use_sse42 ? farmhashsa::Hash32(s, len) :
- farmhashmk::Hash32(s, len));
-}
-
-// Hash function for a byte array. For convenience, a 32-bit seed is also
-// hashed into the result.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-uint32_t Hash32WithSeed(const char* s, size_t len, uint32_t seed) {
- return DebugTweak(
- (can_use_sse41 & x86_64) ? farmhashnt::Hash32WithSeed(s, len, seed) :
- (can_use_sse42 & can_use_aesni) ? farmhashsu::Hash32WithSeed(s, len, seed) :
- can_use_sse42 ? farmhashsa::Hash32WithSeed(s, len, seed) :
- farmhashmk::Hash32WithSeed(s, len, seed));
-}
-
-// Hash function for a byte array. For convenience, a 64-bit seed is also
-// hashed into the result. See also Hash(), below.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-uint64_t Hash64(const char* s, size_t len) {
- return DebugTweak(
- (can_use_sse42 & x86_64) ?
- farmhashte::Hash64(s, len) :
- farmhashxo::Hash64(s, len));
-}
-
-// Hash function for a byte array.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-size_t Hash(const char* s, size_t len) {
- return sizeof(size_t) == 8 ? Hash64(s, len) : Hash32(s, len);
-}
-
-// Hash function for a byte array. For convenience, a 64-bit seed is also
-// hashed into the result.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-uint64_t Hash64WithSeed(const char* s, size_t len, uint64_t seed) {
- return DebugTweak(farmhashna::Hash64WithSeed(s, len, seed));
-}
-
-// Hash function for a byte array. For convenience, two seeds are also
-// hashed into the result.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-uint64_t Hash64WithSeeds(const char* s, size_t len, uint64_t seed0, uint64_t seed1) {
- return DebugTweak(farmhashna::Hash64WithSeeds(s, len, seed0, seed1));
-}
-
-// Hash function for a byte array.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-uint128_t Hash128(const char* s, size_t len) {
- return DebugTweak(farmhashcc::Fingerprint128(s, len));
-}
-
-// Hash function for a byte array. For convenience, a 128-bit seed is also
-// hashed into the result.
-// May change from time to time, may differ on different platforms, may differ
-// depending on NDEBUG.
-uint128_t Hash128WithSeed(const char* s, size_t len, uint128_t seed) {
- return DebugTweak(farmhashcc::CityHash128WithSeed(s, len, seed));
-}
-
-// BASIC NON-STRING HASHING
-
-// FINGERPRINTING (i.e., good, portable, forever-fixed hash functions)
-
-// Fingerprint function for a byte array. Most useful in 32-bit binaries.
-uint32_t Fingerprint32(const char* s, size_t len) {
- return farmhashmk::Hash32(s, len);
-}
-
-// Fingerprint function for a byte array.
-uint64_t Fingerprint64(const char* s, size_t len) {
- return farmhashna::Hash64(s, len);
-}
-
-// Fingerprint function for a byte array.
-uint128_t Fingerprint128(const char* s, size_t len) {
- return farmhashcc::Fingerprint128(s, len);
-}
-
-// Older and still available but perhaps not as fast as the above:
-// farmhashns::Hash32{,WithSeed}()
-
-} // namespace NAMESPACE_FOR_HASH_FUNCTIONS
-
-#if FARMHASHSELFTEST
-
-#ifndef FARMHASH_SELF_TEST_GUARD
-#define FARMHASH_SELF_TEST_GUARD
-#include <cstdio>
-#include <iostream>
-#include <string.h>
-
-using std::cout;
-using std::cerr;
-using std::endl;
-using std::hex;
-
-static const uint64_t kSeed0 = 1234567;
-static const uint64_t kSeed1 = k0;
-static const int kDataSize = 1 << 20;
-static const int kTestSize = 300;
-#define kSeed128 Uint128(kSeed0, kSeed1)
-
-static char data[kDataSize];
-
-static int completed_self_tests = 0;
-static int errors = 0;
-
-// Initialize data to pseudorandom values.
-void Setup() {
- if (completed_self_tests == 0) {
- uint64_t a = 9;
- uint64_t b = 777;
- for (int i = 0; i < kDataSize; i++) {
- a += b;
- b += a;
- a = (a ^ (a >> 41)) * k0;
- b = (b ^ (b >> 41)) * k0 + i;
- uint8_t u = b >> 37;
- memcpy(data + i, &u, 1); // uint8_t -> char
- }
- }
-}
-
-int NoteErrors() {
-#define NUM_SELF_TESTS 9
- if (++completed_self_tests == NUM_SELF_TESTS)
- std::exit(errors > 0);
- return errors;
-}
-
-template <typename T> inline bool IsNonZero(T x) {
- return x != 0;
-}
-
-template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
- return x != Uint128(0, 0);
-}
-
-#endif // FARMHASH_SELF_TEST_GUARD
-
-namespace farmhashccTest {
-
-uint32_t CreateSeed(int offset, int salt) {
- uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
- h = h * c1;
- h ^= (h >> 17);
- h = h * c1;
- h ^= (h >> 17);
- h = h * c1;
- h ^= (h >> 17);
- h += static_cast<uint32_t>(offset & 0xffffffff);
- h = h * c1;
- h ^= (h >> 17);
- h = h * c1;
- h ^= (h >> 17);
- h = h * c1;
- h ^= (h >> 17);
- return h;
-}
-
-#undef SEED
-#undef SEED1
-#undef SEED0
-#define SEED CreateSeed(offset, -1)
-#define SEED0 CreateSeed(offset, 0)
-#define SEED1 CreateSeed(offset, 1)
-
-#undef TESTING
-#define TESTING 1
-#if TESTING
-uint32_t expected[] = {
-4223616069u,
-3696677242u,
-1039179260u, 1690343979u, 1018511555u, 2464489001u,
-20368522u, 2663783964u, 175201532u, 1619210592u,
-4081014168u,
-2576519988u,
-3285042206u, 502478099u, 739479538u, 1500332790u,
-13754768u, 3789353455u, 3473868058u, 1909255088u,
-2212771159u,
-1112731063u,
-826915357u, 2893489933u, 118369799u, 1848668220u,
-1308219822u, 249416982u, 64306364u, 4221800195u,
-1020067935u,
-3955445564u,
-563346294u, 550236731u, 2339016688u, 1826259714u,
-3872358639u, 2295981050u, 1870005390u, 4015628802u,
-1451961420u,
-653440099u,
-1292493871u, 164377749u, 1717712483u, 463414587u,
-3924343675u, 1050492084u, 3566618804u, 2046983362u,
-31917516u,
-2957164615u,
-230718965u, 999595115u, 3534822176u, 2175709186u,
-965707431u, 441796222u, 2481718051u, 1827777486u,
-2590087362u,
-3879448744u,
-3515079898u, 1601433082u, 982764532u, 254808716u,
-1293372530u, 4205605817u, 947001462u, 1138890052u,
-176305566u,
-2447367541u,
-2973802542u, 4123621138u, 3083865840u, 1706367795u,
-792114347u, 2880110657u, 440613768u, 195054868u,
-1359016305u,
-3363804638u,
-649488537u, 1624045597u, 1441938215u, 3147758996u,
-3199173578u, 2597283203u, 2191333609u, 3763129144u,
-1117290165u,
-1062549743u,
-2565615889u, 1046361554u, 1581968261u, 1058773671u,
-1123053168u, 3807622275u, 1486749916u, 3900816089u,
-2437877004u,
-1894455839u,
-1912520953u, 1914997013u, 561048608u, 1643267444u,
-3671572006u, 194811086u, 1468911468u, 2179206286u,
-673206794u,
-3486923651u,
-3741426466u, 3292160512u, 697001377u, 1900763774u,
-3726097344u, 629282039u, 3578723715u, 2868028489u,
-3269862919u,
-2303349487u,
-3643953525u, 2307255916u, 849996280u, 732080434u,
-909961480u, 3542445214u, 2628347095u, 4236856917u,
-1380660650u,
-2631821908u,
-2007289004u, 3509705198u, 3788541675u, 789457322u,
-3090670546u, 638977894u, 3503881773u, 947102987u,
-1525325287u,
-1816697045u,
-2706647405u, 288763142u, 3505438495u, 481308609u,
-2882636782u, 3745162621u, 3503467033u, 428247823u,
-176408838u,
-333551502u,
-1001068721u, 1681483651u, 75380831u, 4191469679u,
-3627361839u, 2736617386u, 3120737438u, 1297502456u,
-864896482u,
-85674920u,
-2886047255u, 4119881331u, 2496990525u, 3442502055u,
-1806582817u, 3186345024u, 4099591287u, 2560171465u,
-3489229104u,
-3065015872u,
-2755089808u, 3098442882u, 378524719u, 2664097023u,
-1771960725u, 2901182183u, 55258521u, 1266621443u,
-581644891u,
-37790450u,
-1800731704u, 3601350920u, 53428754u, 2759476837u,
-3391093099u, 1496510311u, 2511119507u, 2636877410u,
-631613207u,
-1573846064u,
-260484875u, 1088212603u, 2369525206u, 322522428u,
-3191396600u, 2076543340u, 1552496658u, 2739811558u,
-3867875546u,
-2051584261u,
-2126250818u, 901517871u, 3651631165u, 1323139145u,
-1521111765u, 477802997u, 3508559783u, 383954241u,
-3804516756u,
-4250206331u,
-2655954340u, 2484996477u, 1417544845u, 1520282298u,
-2745204366u, 2869345147u, 1872738335u, 2592877343u,
-1619744564u,
-1804962124u,
-3458679890u, 423948620u, 273645618u, 4187865426u,
-376057175u, 2943431463u, 3581950599u, 1035398331u,
-1088213445u,
-861988903u,
-1323370244u, 777069428u, 506235917u, 369720851u,
-2789995854u, 230915180u, 1505086948u, 940361236u,
-3727873235u,
-1159167499u,
-1860302871u, 3456858862u, 3923555152u, 2131072714u,
-2910461068u, 3671950363u, 2010742682u, 4088068851u,
-3616470388u,
-2087714788u,
-221675509u, 1230154072u, 3450704646u, 1463226695u,
-1998357699u, 266026801u, 619568740u, 3560427266u,
-4148162586u,
-3150417316u,
-1356375822u, 2056097622u, 627905802u, 3881675638u,
-2309738053u, 971916703u, 3447805361u, 1673575328u,
-673084328u,
-3317849401u,
-2836362782u, 2377208890u, 3275350588u, 158350552u,
-2553241779u, 2497264995u, 3262882649u, 3897937187u,
-1598963653u,
-3068514414u,
-601541505u, 374517071u, 3380795976u, 235752573u,
-284670003u, 2990192160u, 904937105u, 2306579150u,
-2117362589u,
-1635274830u,
-3355572906u, 170799903u, 1226685528u, 664567688u,
-413219134u, 878324258u, 4026159448u, 3620649295u,
-1823625377u,
-3175888439u,
-1759344347u, 2640637095u, 3549558u, 2192984935u,
-978623493u, 804017880u, 3877562323u, 3843116489u,
-1641748342u,
-1853539444u,
-3001178468u, 3443560727u, 2685426077u, 1653064722u,
-349231508u, 2726789654u, 3136215581u, 768402830u,
-269384321u,
-531936536u,
-2592883487u, 1343156334u, 3628619802u, 1477143570u,
-4269458419u, 3285611028u, 959104925u, 2712290710u,
-3480237248u,
-835796333u,
-2020636251u, 1191914589u, 126521603u, 4288023938u,
-3731699932u, 2136758855u, 985780142u, 193807575u,
-1850544433u,
-653947619u,
-3929316796u, 381871169u, 950486363u, 1787262279u,
-360480382u, 1800636585u, 1039258631u, 3682073259u,
-1262819303u,
-1786000319u,
-1570627191u, 893065837u, 301304916u, 1478469809u,
-623018819u, 2742232545u, 2058913014u, 1706060059u,
-2421125401u,
-1315829592u,
-3208766775u, 1805586156u, 575853086u, 3085025513u,
-4010908260u, 2344058256u, 3814407434u, 1458485673u,
-2474514786u,
-3581895658u,
-2710719679u, 190812706u, 2135454262u, 2620080728u,
-3400757986u, 1669914857u, 1559978393u, 1629811331u,
-3096616493u,
-1391424435u,
-4158376003u, 1015657076u, 794783832u, 479952178u,
-1150290207u, 2497437906u, 231815090u, 755078067u,
-3832053281u,
-63649475u,
-2415822606u, 4105027719u, 1706992318u, 1106598740u,
-3941945667u, 1271300761u, 505882259u, 760186809u,
-2657183368u,
-1925422058u,
-1039773764u, 880219458u, 4275949176u, 1556833823u,
-925882132u, 4216310340u, 757497522u, 461833914u,
-3884002070u,
-2790957660u,
-2100050089u, 651959176u, 1380301291u, 1289124125u,
-452314403u, 226156280u, 3306924715u, 1750807758u,
-2290180542u,
-1953760569u,
-2253069096u, 3960924806u, 1786291620u, 60736185u,
-2569018293u, 3870479674u, 2247005661u, 2239850953u,
-4261808536u,
-3282975782u,
-780945879u, 3349849383u, 1579362556u, 2265045884u,
-905088740u, 725212379u, 3156479246u, 2501620391u,
-3062836263u,
-4070422690u,
-996797869u, 4082582315u, 976105756u, 303983602u,
-1862104804u, 3864508254u, 3383979677u, 2835500286u,
-2798364010u,
-519359476u,
-3447342725u, 194373889u, 3313466630u, 232399983u,
-2841787856u, 1672751454u, 3345183154u, 1805381384u,
-2226129336u,
-2847829057u,
-2350774567u, 2838540121u, 2757948482u, 1017002062u,
-2329150951u, 2171488196u, 3668619047u, 3874977844u,
-3287966998u,
-262346753u,
-2493054715u, 2298644430u, 2926101182u, 1528457638u,
-598656233u, 2615845874u, 989110727u, 820441411u,
-253617372u,
-2201077208u,
-2047569338u, 3114356329u, 3335563734u, 2967673540u,
-768438341u, 1417708203u, 3873718246u, 1538441843u,
-1279167650u,
-3917966776u,
-2218481734u, 1015935150u, 1957845042u, 1318150213u,
-3146423971u, 4218994877u, 1162470863u, 1519718292u,
-2594658906u,
-665870414u,
-3430347817u, 3933868731u, 1597041394u, 3138684682u,
-3398212027u, 1064647658u, 1576321132u, 14792918u,
-224938029u,
-3706456050u,
-847274786u, 2645698692u, 1743374687u, 2343133224u,
-3066596790u, 2857270120u, 200596308u, 452055528u,
-2319312082u,
-3488655402u,
-4146865894u, 608206438u, 2699777051u, 3687240713u,
-327957508u, 3664730153u, 568134564u, 2993484554u,
-4159860363u,
-4274533921u,
-1079994063u, 2360220210u, 3609597760u, 3639708902u,
-2836180437u, 1069910270u, 1892427666u, 1874729790u,
-1267712826u,
-121886940u,
-3572289214u, 2475945610u, 783779452u, 588827737u,
-1531395014u, 2085084212u, 2219189792u, 3981444548u,
-2218885336u,
-1691622694u,
-2053232885u, 1386558530u, 2182946189u, 2365247285u,
-1871081313u, 2935751853u, 38413723u, 543465863u,
-900691890u,
-2899905665u,
-575120562u, 93133904u, 457154948u, 2983705792u,
-4232229200u, 2038565963u, 614693984u, 3405328302u,
-4083090010u,
-2088004171u,
-244031209u, 1861889294u, 2417109253u, 3299562328u,
-4158642443u, 4199064449u, 3161611046u, 885015950u,
-3677904099u,
-2969861785u,
-772348805u, 1712263832u, 3219357614u, 484271305u,
-3645706114u, 2059620251u, 409557488u, 2278896731u,
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<TRUNCATED>