From e24b1e8903b8948ab1c6abef3e8b8b5e534865ff Mon Sep 17 00:00:00 2001 From: Christoph Oelckers Date: Sat, 2 Nov 2019 22:52:13 +0100 Subject: [PATCH] - replaced all uses of xxhash with SuperFastHash. That's one more third party dependency down. Not only are two hashing algorithms redundant, there was also a large size discrepancy: SuperFastHash is 3 kb of source code while xxhash is 120kb and generally extremely awful code. It was easy to make a choice here. None of the use cases require this kind of performance tweaking, the longest hashed block of data is a 768 byte palette. --- source/CMakeLists.txt | 2 - source/build/src/osd.cpp | 26 +- source/build/src/palette.cpp | 42 +- source/common/filesystem/filesystem.cpp | 1 - source/common/utility/superfasthash.cpp | 14 - source/common/utility/superfasthash.h | 17 +- source/duke3d/src/menus.cpp | 6 +- source/rr/src/menus.cpp | 5 +- source/thirdparty/include/xxh3.h | 1613 ----------------------- source/thirdparty/include/xxhash.h | 587 --------- source/thirdparty/src/xxhash.c | 1110 ---------------- 11 files changed, 47 insertions(+), 3376 deletions(-) delete mode 100644 source/thirdparty/include/xxh3.h delete mode 100644 source/thirdparty/include/xxhash.h delete mode 100644 source/thirdparty/src/xxhash.c diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt index 0ce4ac8c9..b4fda37c1 100644 --- a/source/CMakeLists.txt +++ b/source/CMakeLists.txt @@ -680,8 +680,6 @@ set( FASTMATH_SOURCES # The rest is only here because it is C, not C++ glad/src/glad.c - thirdparty/src/xxhash.c - # Another bit of cruft just to make S(hit)DL happy... sdlappicon.cpp gitinfo.cpp diff --git a/source/build/src/osd.cpp b/source/build/src/osd.cpp index 1be60b600..f0a8a93b5 100644 --- a/source/build/src/osd.cpp +++ b/source/build/src/osd.cpp @@ -16,9 +16,6 @@ #include "gamecontrol.h" #include "m_crc32.h" -#define XXH_STATIC_LINKING_ONLY -#include "xxhash.h" - #include "vfs.h" int osdcmd_bind(osdcmdptr_t parm); @@ -245,32 +242,13 @@ static int osdfunc_fileinfo(osdcmdptr_t parm) crctime = timerGetHiTicks() - crctime; - h.Seek(0, FileReader::SeekSet); - - double xxhtime = timerGetHiTicks(); - - XXH32_state_t xxh; - XXH32_reset(&xxh, 0x1337); - - do - { - siz = h.Read(buf, ReadSize); - XXH32_update(&xxh, (uint8_t *)buf, siz); - } - while (siz == ReadSize); - - uint32_t const xxhash = XXH32_digest(&xxh); - xxhtime = timerGetHiTicks() - xxhtime; - Xfree(buf); OSD_Printf("fileinfo: %s\n" " File size: %d bytes\n" - " CRC-32: %08X (%.1fms)\n" - " xxHash: %08X (%.1fms)\n", + " CRC-32: %08X (%.1fms)\n", parm->parms[0], (int)h.GetLength(), - crcval, crctime, - xxhash, xxhtime); + crcval, crctime); return OSDCMD_OK; } diff --git a/source/build/src/palette.cpp b/source/build/src/palette.cpp index 7cde725a6..4b64771c0 100644 --- a/source/build/src/palette.cpp +++ b/source/build/src/palette.cpp @@ -14,7 +14,7 @@ #include "cache1d.h" #include "palette.h" #include "a.h" -#include "xxhash.h" +#include "superfasthash.h" #include "common.h" #include "../../glbackend/glbackend.h" @@ -798,17 +798,21 @@ void videoSetPalette(char dabrightness, uint8_t dapalid, uint8_t flags) if ((flags & 16) && palfadedelta) // keep the fade paletteSetFade(palfadedelta >> 2); - static uint32_t lastpalettesum = 0; - uint32_t newpalettesum = XXH32((uint8_t*)curpalettefaded, sizeof(curpalettefaded), sizeof(curpalettefaded)); - - palsumdidchange = (newpalettesum != lastpalettesum); - - if (palsumdidchange || newpalettesum != g_lastpalettesum) + // Don't waste time on this palette voodoo if we are hardware rendering. videoUpdatePalette is a strictly software rendering function. + if (videoGetRenderMode() < REND_POLYMOST) { - videoUpdatePalette(0, 256); - } + static uint32_t lastpalettesum = 0; + uint32_t newpalettesum = SuperFastHash((char*)curpalettefaded, sizeof(curpalettefaded)); - g_lastpalettesum = lastpalettesum = newpalettesum; + palsumdidchange = (newpalettesum != lastpalettesum); + + if (palsumdidchange || newpalettesum != g_lastpalettesum) + { + videoUpdatePalette(0, 256); + } + + g_lastpalettesum = lastpalettesum = newpalettesum; + } if ((flags & 16) == 0) { @@ -853,15 +857,19 @@ void videoFadePalette(uint8_t r, uint8_t g, uint8_t b, uint8_t offset) paletteSetFade(offset); - static uint32_t lastpalettesum=0; - uint32_t newpalettesum = XXH32((uint8_t *) curpalettefaded, sizeof(curpalettefaded), sizeof(curpalettefaded)); + // Don't waste time on this palette voodoo if we are hardware rendering. videoUpdatePalette is a strictly software rendering function. + if (videoGetRenderMode() < REND_POLYMOST) + { + static uint32_t lastpalettesum = 0; + uint32_t newpalettesum = SuperFastHash((char*)curpalettefaded, sizeof(curpalettefaded)); - if (newpalettesum != lastpalettesum || newpalettesum != g_lastpalettesum) - { - videoUpdatePalette(0, 256); - } + if (newpalettesum != lastpalettesum || newpalettesum != g_lastpalettesum) + { + videoUpdatePalette(0, 256); + } - g_lastpalettesum = lastpalettesum = newpalettesum; + g_lastpalettesum = lastpalettesum = newpalettesum; + } } #ifdef USE_OPENGL diff --git a/source/common/filesystem/filesystem.cpp b/source/common/filesystem/filesystem.cpp index fba88997f..9525f6081 100644 --- a/source/common/filesystem/filesystem.cpp +++ b/source/common/filesystem/filesystem.cpp @@ -46,7 +46,6 @@ #include "name.h" //#include "c_dispatch.h" #include "filesystem.h" -#include "superfasthash.h" #include "resourcefile.h" #include "v_text.h" //#include "md5.h" diff --git a/source/common/utility/superfasthash.cpp b/source/common/utility/superfasthash.cpp index 9e0820639..a443809f0 100644 --- a/source/common/utility/superfasthash.cpp +++ b/source/common/utility/superfasthash.cpp @@ -125,17 +125,3 @@ uint32_t SuperFastHashI (const char *data, size_t len) /* ======================================================================== */ -unsigned int MakeKey (const char *s) -{ - if (s == NULL) - { - return 0; - } - return SuperFastHashI (s, strlen (s)); -} - -unsigned int MakeKey (const char *s, size_t len) -{ - return SuperFastHashI (s, len); -} - diff --git a/source/common/utility/superfasthash.h b/source/common/utility/superfasthash.h index 1b831dbfd..972025202 100644 --- a/source/common/utility/superfasthash.h +++ b/source/common/utility/superfasthash.h @@ -3,5 +3,18 @@ uint32_t SuperFastHash (const char *data, size_t len); uint32_t SuperFastHashI (const char *data, size_t len); -unsigned int MakeKey (const char *s); -unsigned int MakeKey (const char *s, size_t len); + +inline unsigned int MakeKey(const char* s) +{ + if (s == NULL) + { + return 0; + } + return SuperFastHashI(s, strlen(s)); +} + +inline unsigned int MakeKey(const char* s, size_t len) +{ + return SuperFastHashI(s, len); +} + diff --git a/source/duke3d/src/menus.cpp b/source/duke3d/src/menus.cpp index 21aadd555..600857222 100644 --- a/source/duke3d/src/menus.cpp +++ b/source/duke3d/src/menus.cpp @@ -30,7 +30,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. #include "menus.h" #include "osdcmds.h" #include "savegame.h" -#include "xxhash.h" +#include "superfasthash.h" #include "gamecvars.h" #include "gamecontrol.h" #include "../../glbackend/glbackend.h" @@ -3464,7 +3464,7 @@ static void Menu_EntryStringActivate(/*MenuEntry_t *entry*/) { savebrief_t & sv = g_menusaves[M_SAVE.currentEntry-1].brief; if (!save_xxh) - save_xxh = XXH32((uint8_t *)sv.name, MAXSAVEGAMENAME, 0xDEADBEEF); + save_xxh = SuperFastHash(sv.name, MAXSAVEGAMENAME); if (sv.isValid()) Menu_Change(MENU_SAVEVERIFY); } @@ -3496,7 +3496,7 @@ static int32_t Menu_EntryStringSubmit(/*MenuEntry_t *entry, */char *input) #else if (input[0] == 0 || (sv.name[MAXSAVEGAMENAME] == 127 && strncmp(sv.name, input, MAXSAVEGAMENAME) == 0 && - save_xxh == XXH32((uint8_t *)sv.name, MAXSAVEGAMENAME, 0xDEADBEEF))) + save_xxh == SuperFastHash(sv.name, MAXSAVEGAMENAME))) #endif { strncpy(sv.name, g_mapInfo[ud.volume_number * MAXLEVELS + ud.level_number].name, MAXSAVEGAMENAME); diff --git a/source/rr/src/menus.cpp b/source/rr/src/menus.cpp index ead36da0c..2ae585a29 100644 --- a/source/rr/src/menus.cpp +++ b/source/rr/src/menus.cpp @@ -26,7 +26,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. #include "osdcmds.h" #include "savegame.h" #include "demo.h" -#include "xxhash.h" #include "input.h" #include "menus.h" #include "cheats.h" @@ -3848,7 +3847,7 @@ static void Menu_EntryStringActivate(/*MenuEntry_t *entry*/) { savebrief_t & sv = g_menusaves[M_SAVE.currentEntry-1].brief; if (!save_xxh) - save_xxh = XXH32((uint8_t *)sv.name, MAXSAVEGAMENAME, 0xDEADBEEF); + save_xxh = SuperFastHash(sv.name, MAXSAVEGAMENAME); if (sv.isValid()) Menu_Change(MENU_SAVEVERIFY); } @@ -3880,7 +3879,7 @@ static int32_t Menu_EntryStringSubmit(/*MenuEntry_t *entry, */char *input) #else if (input[0] == 0 || (sv.name[MAXSAVEGAMENAME] == 127 && strncmp(sv.name, input, MAXSAVEGAMENAME) == 0 && - save_xxh == XXH32((uint8_t *)sv.name, MAXSAVEGAMENAME, 0xDEADBEEF))) + save_xxh == SuperFastHash(sv.name, MAXSAVEGAMENAME))) #endif { strncpy(sv.name, g_mapInfo[ud.volume_number * MAXLEVELS + ud.level_number].name, MAXSAVEGAMENAME); diff --git a/source/thirdparty/include/xxh3.h b/source/thirdparty/include/xxh3.h deleted file mode 100644 index b3a829584..000000000 --- a/source/thirdparty/include/xxh3.h +++ /dev/null @@ -1,1613 +0,0 @@ -/* - xxHash - Extremely Fast Hash algorithm - Development source file for `xxh3` - Copyright (C) 2019-present, Yann Collet. - - BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php) - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are - met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following disclaimer - in the documentation and/or other materials provided with the - distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - - You can contact the author at : - - xxHash source repository : https://github.com/Cyan4973/xxHash -*/ - -/* Note : - This file is separated for development purposes. - It will be integrated into `xxhash.c` when development phase is complete. -*/ - -#ifndef XXH3_H -#define XXH3_H - - -/* === Dependencies === */ - -#undef XXH_INLINE_ALL /* in case it's already defined */ -#define XXH_INLINE_ALL -#include "xxhash.h" - - -/* === Compiler specifics === */ - -#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* >= C99 */ -# define XXH_RESTRICT restrict -#else -/* note : it might be useful to define __restrict or __restrict__ for some C++ compilers */ -# define XXH_RESTRICT /* disable */ -#endif - -#if defined(__GNUC__) -# if defined(__AVX2__) -# include -# elif defined(__SSE2__) -# include -# elif defined(__ARM_NEON__) || defined(__ARM_NEON) -# define inline __inline__ /* clang bug */ -# include -# undef inline -# endif -#elif defined(_MSC_VER) -# include -#endif - -/* - * Sanity check. - * - * XXH3 only requires these features to be efficient: - * - * - Usable unaligned access - * - A 32-bit or 64-bit ALU - * - If 32-bit, a decent ADC instruction - * - A 32 or 64-bit multiply with a 64-bit result - * - * Almost all 32-bit and 64-bit targets meet this, except for Thumb-1, the - * classic 16-bit only subset of ARM's instruction set. - * - * First of all, Thumb-1 lacks support for the UMULL instruction which - * performs the important long multiply. This means numerous __aeabi_lmul - * calls. - * - * Second of all, the 8 functional registers are just not enough. - * Setup for __aeabi_lmul, byteshift loads, pointers, and all arithmetic need - * Lo registers, and this shuffling results in thousands more MOVs than A32. - * - * A32 and T32 don't have this limitation. They can access all 14 registers, - * do a 32->64 multiply with UMULL, and the flexible operand is helpful too. - * - * If compiling Thumb-1 for a target which supports ARM instructions, we - * will give a warning. - * - * Usually, if this happens, it is because of an accident and you probably - * need to specify -march, as you probably meant to compileh for a newer - * architecture. - */ -#if defined(__thumb__) && !defined(__thumb2__) && defined(__ARM_ARCH_ISA_ARM) -# warning "XXH3 is highly inefficient without ARM or Thumb-2." -#endif - -/* ========================================== - * Vectorization detection - * ========================================== */ -#define XXH_SCALAR 0 -#define XXH_SSE2 1 -#define XXH_AVX2 2 -#define XXH_NEON 3 -#define XXH_VSX 4 - -#ifndef XXH_VECTOR /* can be defined on command line */ -# if defined(__AVX2__) -# define XXH_VECTOR XXH_AVX2 -# elif defined(__SSE2__) || defined(_M_AMD64) || defined(_M_X64) || (defined(_M_IX86_FP) && (_M_IX86_FP == 2)) -# define XXH_VECTOR XXH_SSE2 -# elif defined(__GNUC__) /* msvc support maybe later */ \ - && (defined(__ARM_NEON__) || defined(__ARM_NEON)) \ - && (defined(__LITTLE_ENDIAN__) /* We only support little endian NEON */ \ - || (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)) -# define XXH_VECTOR XXH_NEON -# elif defined(__PPC64__) && defined(__POWER8_VECTOR__) && defined(__GNUC__) -# define XXH_VECTOR XXH_VSX -# else -# define XXH_VECTOR XXH_SCALAR -# endif -#endif - -/* control alignment of accumulator, - * for compatibility with fast vector loads */ -#ifndef XXH_ACC_ALIGN -# if XXH_VECTOR == 0 /* scalar */ -# define XXH_ACC_ALIGN 8 -# elif XXH_VECTOR == 1 /* sse2 */ -# define XXH_ACC_ALIGN 16 -# elif XXH_VECTOR == 2 /* avx2 */ -# define XXH_ACC_ALIGN 32 -# elif XXH_VECTOR == 3 /* neon */ -# define XXH_ACC_ALIGN 16 -# elif XXH_VECTOR == 4 /* vsx */ -# define XXH_ACC_ALIGN 16 -# endif -#endif - -/* xxh_u64 XXH_mult32to64(xxh_u32 a, xxh_u64 b) { return (xxh_u64)a * (xxh_u64)b; } */ -#if defined(_MSC_VER) && defined(_M_IX86) -# include -# define XXH_mult32to64(x, y) __emulu(x, y) -#else -# define XXH_mult32to64(x, y) ((xxh_u64)((x) & 0xFFFFFFFF) * (xxh_u64)((y) & 0xFFFFFFFF)) -#endif - -/* VSX stuff. It's a lot because VSX support is mediocre across compilers and - * there is a lot of mischief with endianness. */ -#if XXH_VECTOR == XXH_VSX -# include -# undef vector -typedef __vector unsigned long long U64x2; -typedef __vector unsigned char U8x16; -typedef __vector unsigned U32x4; - -#ifndef XXH_VSX_BE -# if defined(__BIG_ENDIAN__) \ - || (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) -# define XXH_VSX_BE 1 -# elif defined(__VEC_ELEMENT_REG_ORDER__) && __VEC_ELEMENT_REG_ORDER__ == __ORDER_BIG_ENDIAN__ -# warning "-maltivec=be is not recommended. Please use native endianness." -# define XXH_VSX_BE 1 -# else -# define XXH_VSX_BE 0 -# endif -#endif - -/* We need some helpers for big endian mode. */ -#if XXH_VSX_BE -/* A wrapper for POWER9's vec_revb. */ -# ifdef __POWER9_VECTOR__ -# define XXH_vec_revb vec_revb -# else -XXH_FORCE_INLINE U64x2 XXH_vec_revb(U64x2 val) -{ - U8x16 const vByteSwap = { 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, - 0x0F, 0x0E, 0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08 }; - return vec_perm(val, val, vByteSwap); -} -# endif - -/* Power8 Crypto gives us vpermxor which is very handy for - * PPC64EB. - * - * U8x16 vpermxor(U8x16 a, U8x16 b, U8x16 mask) - * { - * U8x16 ret; - * for (int i = 0; i < 16; i++) { - * ret[i] = a[mask[i] & 0xF] ^ b[mask[i] >> 4]; - * } - * return ret; - * } - * - * Because both of the main loops load the key, swap, and xor it with input, - * we can combine the key swap into this instruction. - */ -# ifdef vec_permxor -# define XXH_vec_permxor vec_permxor -# else -# define XXH_vec_permxor __builtin_crypto_vpermxor -# endif -#endif -/* - * Because we reinterpret the multiply, there are endian memes: vec_mulo actually becomes - * vec_mule. - * - * Additionally, the intrinsic wasn't added until GCC 8, despite existing for a while. - * Clang has an easy way to control this, we can just use the builtin which doesn't swap. - * GCC needs inline assembly. */ -#if __has_builtin(__builtin_altivec_vmuleuw) -# define XXH_vec_mulo __builtin_altivec_vmulouw -# define XXH_vec_mule __builtin_altivec_vmuleuw -#else -/* Adapted from https://github.com/google/highwayhash/blob/master/highwayhash/hh_vsx.h. */ -XXH_FORCE_INLINE U64x2 XXH_vec_mulo(U32x4 a, U32x4 b) { - U64x2 result; - __asm__("vmulouw %0, %1, %2" : "=v" (result) : "v" (a), "v" (b)); - return result; -} -XXH_FORCE_INLINE U64x2 XXH_vec_mule(U32x4 a, U32x4 b) { - U64x2 result; - __asm__("vmuleuw %0, %1, %2" : "=v" (result) : "v" (a), "v" (b)); - return result; -} -#endif -#endif - - -/* ========================================== - * XXH3 default settings - * ========================================== */ - -#define XXH_SECRET_DEFAULT_SIZE 192 /* minimum XXH3_SECRET_SIZE_MIN */ - -#if (XXH_SECRET_DEFAULT_SIZE < XXH3_SECRET_SIZE_MIN) -# error "default keyset is not large enough" -#endif - -XXH_ALIGN(64) static const xxh_u8 kSecret[XXH_SECRET_DEFAULT_SIZE] = { - 0xb8, 0xfe, 0x6c, 0x39, 0x23, 0xa4, 0x4b, 0xbe, 0x7c, 0x01, 0x81, 0x2c, 0xf7, 0x21, 0xad, 0x1c, - 0xde, 0xd4, 0x6d, 0xe9, 0x83, 0x90, 0x97, 0xdb, 0x72, 0x40, 0xa4, 0xa4, 0xb7, 0xb3, 0x67, 0x1f, - 0xcb, 0x79, 0xe6, 0x4e, 0xcc, 0xc0, 0xe5, 0x78, 0x82, 0x5a, 0xd0, 0x7d, 0xcc, 0xff, 0x72, 0x21, - 0xb8, 0x08, 0x46, 0x74, 0xf7, 0x43, 0x24, 0x8e, 0xe0, 0x35, 0x90, 0xe6, 0x81, 0x3a, 0x26, 0x4c, - 0x3c, 0x28, 0x52, 0xbb, 0x91, 0xc3, 0x00, 0xcb, 0x88, 0xd0, 0x65, 0x8b, 0x1b, 0x53, 0x2e, 0xa3, - 0x71, 0x64, 0x48, 0x97, 0xa2, 0x0d, 0xf9, 0x4e, 0x38, 0x19, 0xef, 0x46, 0xa9, 0xde, 0xac, 0xd8, - 0xa8, 0xfa, 0x76, 0x3f, 0xe3, 0x9c, 0x34, 0x3f, 0xf9, 0xdc, 0xbb, 0xc7, 0xc7, 0x0b, 0x4f, 0x1d, - 0x8a, 0x51, 0xe0, 0x4b, 0xcd, 0xb4, 0x59, 0x31, 0xc8, 0x9f, 0x7e, 0xc9, 0xd9, 0x78, 0x73, 0x64, - - 0xea, 0xc5, 0xac, 0x83, 0x34, 0xd3, 0xeb, 0xc3, 0xc5, 0x81, 0xa0, 0xff, 0xfa, 0x13, 0x63, 0xeb, - 0x17, 0x0d, 0xdd, 0x51, 0xb7, 0xf0, 0xda, 0x49, 0xd3, 0x16, 0x55, 0x26, 0x29, 0xd4, 0x68, 0x9e, - 0x2b, 0x16, 0xbe, 0x58, 0x7d, 0x47, 0xa1, 0xfc, 0x8f, 0xf8, 0xb8, 0xd1, 0x7a, 0xd0, 0x31, 0xce, - 0x45, 0xcb, 0x3a, 0x8f, 0x95, 0x16, 0x04, 0x28, 0xaf, 0xd7, 0xfb, 0xca, 0xbb, 0x4b, 0x40, 0x7e, -}; - -/* - * GCC for x86 has a tendency to use SSE in this loop. While it - * successfully avoids swapping (as MUL overwrites EAX and EDX), it - * slows it down because instead of free register swap shifts, it - * must use pshufd and punpckl/hd. - * - * To prevent this, we use this attribute to shut off SSE. - */ -#if defined(__GNUC__) && !defined(__clang__) && defined(__i386__) -__attribute__((__target__("no-sse"))) -#endif -static XXH128_hash_t -XXH_mult64to128(xxh_u64 lhs, xxh_u64 rhs) -{ - /* - * GCC/Clang __uint128_t method. - * - * On most 64-bit targets, GCC and Clang define a __uint128_t type. - * This is usually the best way as it usually uses a native long 64-bit - * multiply, such as MULQ on x86_64 or MUL + UMULH on aarch64. - * - * Usually. - * - * Despite being a 32-bit platform, Clang (and emscripten) define this - * type despite not having the arithmetic for it. This results in a - * laggy compiler builtin call which calculates a full 128-bit multiply. - * In that case it is best to use the portable one. - * https://github.com/Cyan4973/xxHash/issues/211#issuecomment-515575677 - */ -#if defined(__GNUC__) && !defined(__wasm__) \ - && defined(__SIZEOF_INT128__) \ - || (defined(_INTEGRAL_MAX_BITS) && _INTEGRAL_MAX_BITS >= 128) - - __uint128_t product = (__uint128_t)lhs * (__uint128_t)rhs; - XXH128_hash_t const r128 = { (xxh_u64)(product), (xxh_u64)(product >> 64) }; - return r128; - - /* - * MSVC for x64's _umul128 method. - * - * xxh_u64 _umul128(xxh_u64 Multiplier, xxh_u64 Multiplicand, xxh_u64 *HighProduct); - * - * This compiles to single operand MUL on x64. - */ -#elif defined(_M_X64) || defined(_M_IA64) - -#ifndef _MSC_VER -# pragma intrinsic(_umul128) -#endif - xxh_u64 product_high; - xxh_u64 const product_low = _umul128(lhs, rhs, &product_high); - XXH128_hash_t const r128 = { product_low, product_high }; - return r128; - -#else - /* - * Portable scalar method. Optimized for 32-bit and 64-bit ALUs. - * - * This is a fast and simple grade school multiply, which is shown - * below with base 10 arithmetic instead of base 0x100000000. - * - * 9 3 // D2 lhs = 93 - * x 7 5 // D2 rhs = 75 - * ---------- - * 1 5 // D2 lo_lo = (93 % 10) * (75 % 10) - * 4 5 | // D2 hi_lo = (93 / 10) * (75 % 10) - * 2 1 | // D2 lo_hi = (93 % 10) * (75 / 10) - * + 6 3 | | // D2 hi_hi = (93 / 10) * (75 / 10) - * --------- - * 2 7 | // D2 cross = (15 / 10) + (45 % 10) + 21 - * + 6 7 | | // D2 upper = (27 / 10) + (45 / 10) + 63 - * --------- - * 6 9 7 5 - * - * The reasons for adding the products like this are: - * 1. It avoids manual carry tracking. Just like how - * (9 * 9) + 9 + 9 = 99, the same applies with this for - * UINT64_MAX. This avoids a lot of complexity. - * - * 2. It hints for, and on Clang, compiles to, the powerful UMAAL - * instruction available in ARMv6+ A32/T32, which is shown below: - * - * void UMAAL(xxh_u32 *RdLo, xxh_u32 *RdHi, xxh_u32 Rn, xxh_u32 Rm) - * { - * xxh_u64 product = (xxh_u64)*RdLo * (xxh_u64)*RdHi + Rn + Rm; - * *RdLo = (xxh_u32)(product & 0xFFFFFFFF); - * *RdHi = (xxh_u32)(product >> 32); - * } - * - * This instruction was designed for efficient long multiplication, - * and allows this to be calculated in only 4 instructions which - * is comparable to some 64-bit ALUs. - * - * 3. It isn't terrible on other platforms. Usually this will be - * a couple of 32-bit ADD/ADCs. - */ - - /* First calculate all of the cross products. */ - xxh_u64 const lo_lo = XXH_mult32to64(lhs & 0xFFFFFFFF, rhs & 0xFFFFFFFF); - xxh_u64 const hi_lo = XXH_mult32to64(lhs >> 32, rhs & 0xFFFFFFFF); - xxh_u64 const lo_hi = XXH_mult32to64(lhs & 0xFFFFFFFF, rhs >> 32); - xxh_u64 const hi_hi = XXH_mult32to64(lhs >> 32, rhs >> 32); - - /* Now add the products together. These will never overflow. */ - xxh_u64 const cross = (lo_lo >> 32) + (hi_lo & 0xFFFFFFFF) + lo_hi; - xxh_u64 const upper = (hi_lo >> 32) + (cross >> 32) + hi_hi; - xxh_u64 const lower = (cross << 32) | (lo_lo & 0xFFFFFFFF); - - XXH128_hash_t r128 = { lower, upper }; - return r128; -#endif -} - -/* - * We want to keep the attribute here because a target switch - * disables inlining. - * - * Does a 64-bit to 128-bit multiply, then XOR folds it. - * The reason for the separate function is to prevent passing - * too many structs around by value. This will hopefully inline - * the multiply, but we don't force it. - */ -#if defined(__GNUC__) && !defined(__clang__) && defined(__i386__) -__attribute__((__target__("no-sse"))) -#endif -static xxh_u64 -XXH3_mul128_fold64(xxh_u64 lhs, xxh_u64 rhs) -{ - XXH128_hash_t product = XXH_mult64to128(lhs, rhs); - return product.low64 ^ product.high64; -} - - -static XXH64_hash_t XXH3_avalanche(xxh_u64 h64) -{ - h64 ^= h64 >> 37; - h64 *= PRIME64_3; - h64 ^= h64 >> 32; - return h64; -} - - -/* ========================================== - * Short keys - * ========================================== */ - -XXH_FORCE_INLINE XXH64_hash_t -XXH3_len_1to3_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(input != NULL); - XXH_ASSERT(1 <= len && len <= 3); - XXH_ASSERT(secret != NULL); - { xxh_u8 const c1 = input[0]; - xxh_u8 const c2 = input[len >> 1]; - xxh_u8 const c3 = input[len - 1]; - xxh_u32 const combined = ((xxh_u32)c1) | (((xxh_u32)c2) << 8) | (((xxh_u32)c3) << 16) | (((xxh_u32)len) << 24); - xxh_u64 const keyed = (xxh_u64)combined ^ (XXH_readLE32(secret) + seed); - xxh_u64 const mixed = keyed * PRIME64_1; - return XXH3_avalanche(mixed); - } -} - -XXH_FORCE_INLINE XXH64_hash_t -XXH3_len_4to8_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(input != NULL); - XXH_ASSERT(secret != NULL); - XXH_ASSERT(4 <= len && len <= 8); - { xxh_u32 const input_lo = XXH_readLE32(input); - xxh_u32 const input_hi = XXH_readLE32(input + len - 4); - xxh_u64 const input_64 = input_lo | ((xxh_u64)input_hi << 32); - xxh_u64 const keyed = input_64 ^ (XXH_readLE64(secret) + seed); - xxh_u64 const mix64 = len + ((keyed ^ (keyed >> 51)) * PRIME32_1); - return XXH3_avalanche((mix64 ^ (mix64 >> 47)) * PRIME64_2); - } -} - -XXH_FORCE_INLINE XXH64_hash_t -XXH3_len_9to16_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(input != NULL); - XXH_ASSERT(secret != NULL); - XXH_ASSERT(9 <= len && len <= 16); - { xxh_u64 const input_lo = XXH_readLE64(input) ^ (XXH_readLE64(secret) + seed); - xxh_u64 const input_hi = XXH_readLE64(input + len - 8) ^ (XXH_readLE64(secret + 8) - seed); - xxh_u64 const acc = len + (input_lo + input_hi) + XXH3_mul128_fold64(input_lo, input_hi); - return XXH3_avalanche(acc); - } -} - -XXH_FORCE_INLINE XXH64_hash_t -XXH3_len_0to16_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(len <= 16); - { if (len > 8) return XXH3_len_9to16_64b(input, len, secret, seed); - if (len >= 4) return XXH3_len_4to8_64b(input, len, secret, seed); - if (len) return XXH3_len_1to3_64b(input, len, secret, seed); - return 0; - } -} - - -/* === Long Keys === */ - -#define STRIPE_LEN 64 -#define XXH_SECRET_CONSUME_RATE 8 /* nb of secret bytes consumed at each accumulation */ -#define ACC_NB (STRIPE_LEN / sizeof(xxh_u64)) - -typedef enum { XXH3_acc_64bits, XXH3_acc_128bits } XXH3_accWidth_e; - -XXH_FORCE_INLINE void -XXH3_accumulate_512( void* XXH_RESTRICT acc, - const void* XXH_RESTRICT input, - const void* XXH_RESTRICT secret, - XXH3_accWidth_e accWidth) -{ -#if (XXH_VECTOR == XXH_AVX2) - - XXH_ASSERT((((size_t)acc) & 31) == 0); - { XXH_ALIGN(32) __m256i* const xacc = (__m256i *) acc; - const __m256i* const xinput = (const __m256i *) input; /* not really aligned, just for ptr arithmetic, and because _mm256_loadu_si256() requires this type */ - const __m256i* const xsecret = (const __m256i *) secret; /* not really aligned, just for ptr arithmetic, and because _mm256_loadu_si256() requires this type */ - - size_t i; - for (i=0; i < STRIPE_LEN/sizeof(__m256i); i++) { - __m256i const data_vec = _mm256_loadu_si256 (xinput+i); - __m256i const key_vec = _mm256_loadu_si256 (xsecret+i); - __m256i const data_key = _mm256_xor_si256 (data_vec, key_vec); /* uint32 dk[8] = {d0+k0, d1+k1, d2+k2, d3+k3, ...} */ - __m256i const product = _mm256_mul_epu32 (data_key, _mm256_shuffle_epi32 (data_key, 0x31)); /* uint64 mul[4] = {dk0*dk1, dk2*dk3, ...} */ - if (accWidth == XXH3_acc_128bits) { - __m256i const data_swap = _mm256_shuffle_epi32(data_vec, _MM_SHUFFLE(1,0,3,2)); - __m256i const sum = _mm256_add_epi64(xacc[i], data_swap); - xacc[i] = _mm256_add_epi64(product, sum); - } else { /* XXH3_acc_64bits */ - __m256i const sum = _mm256_add_epi64(xacc[i], data_vec); - xacc[i] = _mm256_add_epi64(product, sum); - } - } } - -#elif (XXH_VECTOR == XXH_SSE2) - - XXH_ASSERT((((size_t)acc) & 15) == 0); - { XXH_ALIGN(16) __m128i* const xacc = (__m128i *) acc; - const __m128i* const xinput = (const __m128i *) input; /* not really aligned, just for ptr arithmetic, and because _mm_loadu_si128() requires this type */ - const __m128i* const xsecret = (const __m128i *) secret; /* not really aligned, just for ptr arithmetic, and because _mm_loadu_si128() requires this type */ - - size_t i; - for (i=0; i < STRIPE_LEN/sizeof(__m128i); i++) { - __m128i const data_vec = _mm_loadu_si128 (xinput+i); - __m128i const key_vec = _mm_loadu_si128 (xsecret+i); - __m128i const data_key = _mm_xor_si128 (data_vec, key_vec); /* uint32 dk[8] = {d0+k0, d1+k1, d2+k2, d3+k3, ...} */ - __m128i const product = _mm_mul_epu32 (data_key, _mm_shuffle_epi32 (data_key, 0x31)); /* uint64 mul[4] = {dk0*dk1, dk2*dk3, ...} */ - if (accWidth == XXH3_acc_128bits) { - __m128i const data_swap = _mm_shuffle_epi32(data_vec, _MM_SHUFFLE(1,0,3,2)); - __m128i const sum = _mm_add_epi64(xacc[i], data_swap); - xacc[i] = _mm_add_epi64(product, sum); - } else { /* XXH3_acc_64bits */ - __m128i const sum = _mm_add_epi64(xacc[i], data_vec); - xacc[i] = _mm_add_epi64(product, sum); - } - } } - -#elif (XXH_VECTOR == XXH_NEON) - - XXH_ASSERT((((size_t)acc) & 15) == 0); - { - XXH_ALIGN(16) uint64x2_t* const xacc = (uint64x2_t *) acc; - /* We don't use a uint32x4_t pointer because it causes bus errors on ARMv7. */ - uint8_t const* const xinput = (const uint8_t *) input; - uint8_t const* const xsecret = (const uint8_t *) secret; - - size_t i; - for (i=0; i < STRIPE_LEN / sizeof(uint64x2_t); i++) { -#if !defined(__aarch64__) && !defined(__arm64__) && defined(__GNUC__) /* ARM32-specific hack */ - /* vzip on ARMv7 Clang generates a lot of vmovs (technically vorrs) without this. - * vzip on 32-bit ARM NEON will overwrite the original register, and I think that Clang - * assumes I don't want to destroy it and tries to make a copy. This slows down the code - * a lot. - * aarch64 not only uses an entirely different syntax, but it requires three - * instructions... - * ext v1.16B, v0.16B, #8 // select high bits because aarch64 can't address them directly - * zip1 v3.2s, v0.2s, v1.2s // first zip - * zip2 v2.2s, v0.2s, v1.2s // second zip - * ...to do what ARM does in one: - * vzip.32 d0, d1 // Interleave high and low bits and overwrite. */ - - /* data_vec = xsecret[i]; */ - uint8x16_t const data_vec = vld1q_u8(xinput + (i * 16)); - /* key_vec = xsecret[i]; */ - uint8x16_t const key_vec = vld1q_u8(xsecret + (i * 16)); - /* data_key = data_vec ^ key_vec; */ - uint32x4_t data_key; - - if (accWidth == XXH3_acc_64bits) { - /* Add first to prevent register swaps */ - /* xacc[i] += data_vec; */ - xacc[i] = vaddq_u64 (xacc[i], vreinterpretq_u64_u8(data_vec)); - } else { /* XXH3_acc_128bits */ - /* xacc[i] += swap(data_vec); */ - /* can probably be optimized better */ - uint64x2_t const data64 = vreinterpretq_u64_u8(data_vec); - uint64x2_t const swapped= vextq_u64(data64, data64, 1); - xacc[i] = vaddq_u64 (xacc[i], swapped); - } - - data_key = vreinterpretq_u32_u8(veorq_u8(data_vec, key_vec)); - - /* Here's the magic. We use the quirkiness of vzip to shuffle data_key in place. - * shuffle: data_key[0, 1, 2, 3] = data_key[0, 2, 1, 3] */ - __asm__("vzip.32 %e0, %f0" : "+w" (data_key)); - /* xacc[i] += (uint64x2_t) data_key[0, 1] * (uint64x2_t) data_key[2, 3]; */ - xacc[i] = vmlal_u32(xacc[i], vget_low_u32(data_key), vget_high_u32(data_key)); - -#else - /* On aarch64, vshrn/vmovn seems to be equivalent to, if not faster than, the vzip method. */ - - /* data_vec = xsecret[i]; */ - uint8x16_t const data_vec = vld1q_u8(xinput + (i * 16)); - /* key_vec = xsecret[i]; */ - uint8x16_t const key_vec = vld1q_u8(xsecret + (i * 16)); - /* data_key = data_vec ^ key_vec; */ - uint64x2_t const data_key = vreinterpretq_u64_u8(veorq_u8(data_vec, key_vec)); - /* data_key_lo = (uint32x2_t) (data_key & 0xFFFFFFFF); */ - uint32x2_t const data_key_lo = vmovn_u64 (data_key); - /* data_key_hi = (uint32x2_t) (data_key >> 32); */ - uint32x2_t const data_key_hi = vshrn_n_u64 (data_key, 32); - if (accWidth == XXH3_acc_64bits) { - /* xacc[i] += data_vec; */ - xacc[i] = vaddq_u64 (xacc[i], vreinterpretq_u64_u8(data_vec)); - } else { /* XXH3_acc_128bits */ - /* xacc[i] += swap(data_vec); */ - uint64x2_t const data64 = vreinterpretq_u64_u8(data_vec); - uint64x2_t const swapped= vextq_u64(data64, data64, 1); - xacc[i] = vaddq_u64 (xacc[i], swapped); - } - /* xacc[i] += (uint64x2_t) data_key_lo * (uint64x2_t) data_key_hi; */ - xacc[i] = vmlal_u32 (xacc[i], data_key_lo, data_key_hi); - -#endif - } - } - -#elif (XXH_VECTOR == XXH_VSX) - U64x2* const xacc = (U64x2*) acc; /* presumed aligned */ - U64x2 const* const xinput = (U64x2 const*) input; /* no alignment restriction */ - U64x2 const* const xsecret = (U64x2 const*) secret; /* no alignment restriction */ - U64x2 const v32 = { 32, 32 }; -#if XXH_VSX_BE - U8x16 const vXorSwap = { 0x07, 0x16, 0x25, 0x34, 0x43, 0x52, 0x61, 0x70, - 0x8F, 0x9E, 0xAD, 0xBC, 0xCB, 0xDA, 0xE9, 0xF8 }; -#endif - size_t i; - for (i = 0; i < STRIPE_LEN / sizeof(U64x2); i++) { - /* data_vec = xinput[i]; */ - /* key_vec = xsecret[i]; */ -#if XXH_VSX_BE - /* byteswap */ - U64x2 const data_vec = XXH_vec_revb(vec_vsx_ld(0, xinput + i)); - U64x2 const key_raw = vec_vsx_ld(0, xsecret + i); - /* See comment above. data_key = data_vec ^ swap(xsecret[i]); */ - U64x2 const data_key = (U64x2)XXH_vec_permxor((U8x16)data_vec, (U8x16)key_raw, vXorSwap); -#else - U64x2 const data_vec = vec_vsx_ld(0, xinput + i); - U64x2 const key_vec = vec_vsx_ld(0, xsecret + i); - U64x2 const data_key = data_vec ^ key_vec; -#endif - /* shuffled = (data_key << 32) | (data_key >> 32); */ - U32x4 const shuffled = (U32x4)vec_rl(data_key, v32); - /* product = ((U64x2)data_key & 0xFFFFFFFF) * ((U64x2)shuffled & 0xFFFFFFFF); */ - U64x2 const product = XXH_vec_mulo((U32x4)data_key, shuffled); - xacc[i] += product; - - if (accWidth == XXH3_acc_64bits) { - xacc[i] += data_vec; - } else { /* XXH3_acc_128bits */ - /* swap high and low halves */ - U64x2 const data_swapped = vec_xxpermdi(data_vec, data_vec, 2); - xacc[i] += data_swapped; - } - } - -#else /* scalar variant of Accumulator - universal */ - - XXH_ALIGN(XXH_ACC_ALIGN) xxh_u64* const xacc = (xxh_u64*) acc; /* presumed aligned on 32-bytes boundaries, little hint for the auto-vectorizer */ - const xxh_u8* const xinput = (const xxh_u8*) input; /* no alignment restriction */ - const xxh_u8* const xsecret = (const xxh_u8*) secret; /* no alignment restriction */ - size_t i; - XXH_ASSERT(((size_t)acc & (XXH_ACC_ALIGN-1)) == 0); - for (i=0; i < ACC_NB; i++) { - xxh_u64 const data_val = XXH_readLE64(xinput + 8*i); - xxh_u64 const data_key = data_val ^ XXH_readLE64(xsecret + i*8); - - if (accWidth == XXH3_acc_64bits) { - xacc[i] += data_val; - } else { - xacc[i ^ 1] += data_val; /* swap adjacent lanes */ - } - xacc[i] += XXH_mult32to64(data_key & 0xFFFFFFFF, data_key >> 32); - } -#endif -} - -XXH_FORCE_INLINE void -XXH3_scrambleAcc(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret) -{ -#if (XXH_VECTOR == XXH_AVX2) - - XXH_ASSERT((((size_t)acc) & 31) == 0); - { XXH_ALIGN(32) __m256i* const xacc = (__m256i*) acc; - const __m256i* const xsecret = (const __m256i *) secret; /* not really aligned, just for ptr arithmetic, and because _mm256_loadu_si256() requires this argument type */ - const __m256i prime32 = _mm256_set1_epi32((int)PRIME32_1); - - size_t i; - for (i=0; i < STRIPE_LEN/sizeof(__m256i); i++) { - /* xacc[i] ^= (xacc[i] >> 47) */ - __m256i const acc_vec = xacc[i]; - __m256i const shifted = _mm256_srli_epi64 (acc_vec, 47); - __m256i const data_vec = _mm256_xor_si256 (acc_vec, shifted); - /* xacc[i] ^= xsecret; */ - __m256i const key_vec = _mm256_loadu_si256 (xsecret+i); - __m256i const data_key = _mm256_xor_si256 (data_vec, key_vec); - - /* xacc[i] *= PRIME32_1; */ - __m256i const data_key_hi = _mm256_shuffle_epi32 (data_key, 0x31); - __m256i const prod_lo = _mm256_mul_epu32 (data_key, prime32); - __m256i const prod_hi = _mm256_mul_epu32 (data_key_hi, prime32); - xacc[i] = _mm256_add_epi64(prod_lo, _mm256_slli_epi64(prod_hi, 32)); - } - } - -#elif (XXH_VECTOR == XXH_SSE2) - - XXH_ASSERT((((size_t)acc) & 15) == 0); - { XXH_ALIGN(16) __m128i* const xacc = (__m128i*) acc; - const __m128i* const xsecret = (const __m128i *) secret; /* not really aligned, just for ptr arithmetic, and because _mm_loadu_si128() requires this argument type */ - const __m128i prime32 = _mm_set1_epi32((int)PRIME32_1); - - size_t i; - for (i=0; i < STRIPE_LEN/sizeof(__m128i); i++) { - /* xacc[i] ^= (xacc[i] >> 47) */ - __m128i const acc_vec = xacc[i]; - __m128i const shifted = _mm_srli_epi64 (acc_vec, 47); - __m128i const data_vec = _mm_xor_si128 (acc_vec, shifted); - /* xacc[i] ^= xsecret; */ - __m128i const key_vec = _mm_loadu_si128 (xsecret+i); - __m128i const data_key = _mm_xor_si128 (data_vec, key_vec); - - /* xacc[i] *= PRIME32_1; */ - __m128i const data_key_hi = _mm_shuffle_epi32 (data_key, 0x31); - __m128i const prod_lo = _mm_mul_epu32 (data_key, prime32); - __m128i const prod_hi = _mm_mul_epu32 (data_key_hi, prime32); - xacc[i] = _mm_add_epi64(prod_lo, _mm_slli_epi64(prod_hi, 32)); - } - } - -#elif (XXH_VECTOR == XXH_NEON) - - XXH_ASSERT((((size_t)acc) & 15) == 0); - - { uint64x2_t* const xacc = (uint64x2_t*) acc; - uint8_t const* const xsecret = (uint8_t const*) secret; - uint32x2_t const prime = vdup_n_u32 (PRIME32_1); - - size_t i; - for (i=0; i < STRIPE_LEN/sizeof(uint64x2_t); i++) { - /* data_vec = xacc[i] ^ (xacc[i] >> 47); */ - uint64x2_t const acc_vec = xacc[i]; - uint64x2_t const shifted = vshrq_n_u64 (acc_vec, 47); - uint64x2_t const data_vec = veorq_u64 (acc_vec, shifted); - - /* key_vec = xsecret[i]; */ - uint32x4_t const key_vec = vreinterpretq_u32_u8(vld1q_u8(xsecret + (i * 16))); - /* data_key = data_vec ^ key_vec; */ - uint32x4_t const data_key = veorq_u32 (vreinterpretq_u32_u64(data_vec), key_vec); - /* shuffled = { data_key[0, 2], data_key[1, 3] }; */ - uint32x2x2_t const shuffled = vzip_u32 (vget_low_u32(data_key), vget_high_u32(data_key)); - - /* data_key *= PRIME32_1 */ - - /* prod_hi = (data_key >> 32) * PRIME32_1; */ - uint64x2_t const prod_hi = vmull_u32 (shuffled.val[1], prime); - /* xacc[i] = prod_hi << 32; */ - xacc[i] = vshlq_n_u64(prod_hi, 32); - /* xacc[i] += (prod_hi & 0xFFFFFFFF) * PRIME32_1; */ - xacc[i] = vmlal_u32(xacc[i], shuffled.val[0], prime); - } } - -#elif (XXH_VECTOR == XXH_VSX) - - U64x2* const xacc = (U64x2*) acc; - const U64x2* const xsecret = (const U64x2*) secret; - /* constants */ - U64x2 const v32 = { 32, 32 }; - U64x2 const v47 = { 47, 47 }; - U32x4 const prime = { PRIME32_1, PRIME32_1, PRIME32_1, PRIME32_1 }; - size_t i; -#if XXH_VSX_BE - /* endian swap */ - U8x16 const vXorSwap = { 0x07, 0x16, 0x25, 0x34, 0x43, 0x52, 0x61, 0x70, - 0x8F, 0x9E, 0xAD, 0xBC, 0xCB, 0xDA, 0xE9, 0xF8 }; -#endif - for (i = 0; i < STRIPE_LEN / sizeof(U64x2); i++) { - U64x2 const acc_vec = xacc[i]; - U64x2 const data_vec = acc_vec ^ (acc_vec >> v47); - /* key_vec = xsecret[i]; */ -#if XXH_VSX_BE - /* swap bytes words */ - U64x2 const key_raw = vec_vsx_ld(0, xsecret + i); - U64x2 const data_key = (U64x2)XXH_vec_permxor((U8x16)data_vec, (U8x16)key_raw, vXorSwap); -#else - U64x2 const key_vec = vec_vsx_ld(0, xsecret + i); - U64x2 const data_key = data_vec ^ key_vec; -#endif - - /* data_key *= PRIME32_1 */ - - /* prod_lo = ((U64x2)data_key & 0xFFFFFFFF) * ((U64x2)prime & 0xFFFFFFFF); */ - U64x2 const prod_even = XXH_vec_mule((U32x4)data_key, prime); - /* prod_hi = ((U64x2)data_key >> 32) * ((U64x2)prime >> 32); */ - U64x2 const prod_odd = XXH_vec_mulo((U32x4)data_key, prime); - xacc[i] = prod_odd + (prod_even << v32); - } - -#else /* scalar variant of Scrambler - universal */ - - XXH_ALIGN(XXH_ACC_ALIGN) xxh_u64* const xacc = (xxh_u64*) acc; /* presumed aligned on 32-bytes boundaries, little hint for the auto-vectorizer */ - const xxh_u8* const xsecret = (const xxh_u8*) secret; /* no alignment restriction */ - size_t i; - XXH_ASSERT((((size_t)acc) & (XXH_ACC_ALIGN-1)) == 0); - for (i=0; i < ACC_NB; i++) { - xxh_u64 const key64 = XXH_readLE64(xsecret + 8*i); - xxh_u64 acc64 = xacc[i]; - acc64 ^= acc64 >> 47; - acc64 ^= key64; - acc64 *= PRIME32_1; - xacc[i] = acc64; - } - -#endif -} - -/* assumption : nbStripes will not overflow secret size */ -XXH_FORCE_INLINE void -XXH3_accumulate( xxh_u64* XXH_RESTRICT acc, - const xxh_u8* XXH_RESTRICT input, - const xxh_u8* XXH_RESTRICT secret, - size_t nbStripes, - XXH3_accWidth_e accWidth) -{ - size_t n; - for (n = 0; n < nbStripes; n++ ) { - XXH3_accumulate_512(acc, - input + n*STRIPE_LEN, - secret + n*XXH_SECRET_CONSUME_RATE, - accWidth); - } -} - -/* note : clang auto-vectorizes well in SS2 mode _if_ this function is `static`, - * and doesn't auto-vectorize it at all if it is `FORCE_INLINE`. - * However, it auto-vectorizes better AVX2 if it is `FORCE_INLINE` - * Pretty much every other modes and compilers prefer `FORCE_INLINE`. - */ - -#if defined(__clang__) && (XXH_VECTOR==0) && !defined(__AVX2__) && !defined(__arm__) && !defined(__thumb__) -static void -#else -XXH_FORCE_INLINE void -#endif -XXH3_hashLong_internal_loop( xxh_u64* XXH_RESTRICT acc, - const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize, - XXH3_accWidth_e accWidth) -{ - size_t const nb_rounds = (secretSize - STRIPE_LEN) / XXH_SECRET_CONSUME_RATE; - size_t const block_len = STRIPE_LEN * nb_rounds; - size_t const nb_blocks = len / block_len; - - size_t n; - - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); - - for (n = 0; n < nb_blocks; n++) { - XXH3_accumulate(acc, input + n*block_len, secret, nb_rounds, accWidth); - XXH3_scrambleAcc(acc, secret + secretSize - STRIPE_LEN); - } - - /* last partial block */ - XXH_ASSERT(len > STRIPE_LEN); - { size_t const nbStripes = (len - (block_len * nb_blocks)) / STRIPE_LEN; - XXH_ASSERT(nbStripes <= (secretSize / XXH_SECRET_CONSUME_RATE)); - XXH3_accumulate(acc, input + nb_blocks*block_len, secret, nbStripes, accWidth); - - /* last stripe */ - if (len & (STRIPE_LEN - 1)) { - const xxh_u8* const p = input + len - STRIPE_LEN; -#define XXH_SECRET_LASTACC_START 7 /* do not align on 8, so that secret is different from scrambler */ - XXH3_accumulate_512(acc, p, secret + secretSize - STRIPE_LEN - XXH_SECRET_LASTACC_START, accWidth); - } } -} - -XXH_FORCE_INLINE xxh_u64 -XXH3_mix2Accs(const xxh_u64* XXH_RESTRICT acc, const xxh_u8* XXH_RESTRICT secret) -{ - return XXH3_mul128_fold64( - acc[0] ^ XXH_readLE64(secret), - acc[1] ^ XXH_readLE64(secret+8) ); -} - -static XXH64_hash_t -XXH3_mergeAccs(const xxh_u64* XXH_RESTRICT acc, const xxh_u8* XXH_RESTRICT secret, xxh_u64 start) -{ - xxh_u64 result64 = start; - - result64 += XXH3_mix2Accs(acc+0, secret + 0); - result64 += XXH3_mix2Accs(acc+2, secret + 16); - result64 += XXH3_mix2Accs(acc+4, secret + 32); - result64 += XXH3_mix2Accs(acc+6, secret + 48); - - return XXH3_avalanche(result64); -} - -#define XXH3_INIT_ACC { PRIME32_3, PRIME64_1, PRIME64_2, PRIME64_3, \ - PRIME64_4, PRIME32_2, PRIME64_5, PRIME32_1 }; - -XXH_FORCE_INLINE XXH64_hash_t -XXH3_hashLong_internal(const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize) -{ - XXH_ALIGN(XXH_ACC_ALIGN) xxh_u64 acc[ACC_NB] = XXH3_INIT_ACC; - - XXH3_hashLong_internal_loop(acc, input, len, secret, secretSize, XXH3_acc_64bits); - - /* converge into final hash */ - XXH_STATIC_ASSERT(sizeof(acc) == 64); -#define XXH_SECRET_MERGEACCS_START 11 /* do not align on 8, so that secret is different from accumulator */ - XXH_ASSERT(secretSize >= sizeof(acc) + XXH_SECRET_MERGEACCS_START); - return XXH3_mergeAccs(acc, secret + XXH_SECRET_MERGEACCS_START, (xxh_u64)len * PRIME64_1); -} - - -XXH_NO_INLINE XXH64_hash_t /* It's important for performance that XXH3_hashLong is not inlined. Not sure why (uop cache maybe ?), but difference is large and easily measurable */ -XXH3_hashLong_64b_defaultSecret(const xxh_u8* XXH_RESTRICT input, size_t len) -{ - return XXH3_hashLong_internal(input, len, kSecret, sizeof(kSecret)); -} - -XXH_NO_INLINE XXH64_hash_t /* It's important for performance that XXH3_hashLong is not inlined. Not sure why (uop cache maybe ?), but difference is large and easily measurable */ -XXH3_hashLong_64b_withSecret(const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize) -{ - return XXH3_hashLong_internal(input, len, secret, secretSize); -} - - -XXH_FORCE_INLINE void XXH_writeLE64(void* dst, xxh_u64 v64) -{ - if (!XXH_CPU_LITTLE_ENDIAN) v64 = XXH_swap64(v64); - memcpy(dst, &v64, sizeof(v64)); -} - -/* XXH3_initCustomSecret() : - * destination `customSecret` is presumed allocated and same size as `kSecret`. - */ -XXH_FORCE_INLINE void XXH3_initCustomSecret(xxh_u8* customSecret, xxh_u64 seed64) -{ - int const nbRounds = XXH_SECRET_DEFAULT_SIZE / 16; - int i; - - XXH_STATIC_ASSERT((XXH_SECRET_DEFAULT_SIZE & 15) == 0); - - for (i=0; i < nbRounds; i++) { - XXH_writeLE64(customSecret + 16*i, XXH_readLE64(kSecret + 16*i) + seed64); - XXH_writeLE64(customSecret + 16*i + 8, XXH_readLE64(kSecret + 16*i + 8) - seed64); - } -} - - -/* XXH3_hashLong_64b_withSeed() : - * Generate a custom key, - * based on alteration of default kSecret with the seed, - * and then use this key for long mode hashing. - * This operation is decently fast but nonetheless costs a little bit of time. - * Try to avoid it whenever possible (typically when seed==0). - */ -XXH_NO_INLINE XXH64_hash_t /* It's important for performance that XXH3_hashLong is not inlined. Not sure why (uop cache maybe ?), but difference is large and easily measurable */ -XXH3_hashLong_64b_withSeed(const xxh_u8* input, size_t len, XXH64_hash_t seed) -{ - XXH_ALIGN(8) xxh_u8 secret[XXH_SECRET_DEFAULT_SIZE]; - if (seed==0) return XXH3_hashLong_64b_defaultSecret(input, len); - XXH3_initCustomSecret(secret, seed); - return XXH3_hashLong_internal(input, len, secret, sizeof(secret)); -} - - -XXH_FORCE_INLINE xxh_u64 XXH3_mix16B(const xxh_u8* XXH_RESTRICT input, - const xxh_u8* XXH_RESTRICT secret, xxh_u64 seed64) -{ - xxh_u64 const input_lo = XXH_readLE64(input); - xxh_u64 const input_hi = XXH_readLE64(input+8); - return XXH3_mul128_fold64( - input_lo ^ (XXH_readLE64(secret) + seed64), - input_hi ^ (XXH_readLE64(secret+8) - seed64) ); -} - - -XXH_FORCE_INLINE XXH64_hash_t -XXH3_len_17to128_64b(const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize, - XXH64_hash_t seed) -{ - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize; - XXH_ASSERT(16 < len && len <= 128); - - { xxh_u64 acc = len * PRIME64_1; - if (len > 32) { - if (len > 64) { - if (len > 96) { - acc += XXH3_mix16B(input+48, secret+96, seed); - acc += XXH3_mix16B(input+len-64, secret+112, seed); - } - acc += XXH3_mix16B(input+32, secret+64, seed); - acc += XXH3_mix16B(input+len-48, secret+80, seed); - } - acc += XXH3_mix16B(input+16, secret+32, seed); - acc += XXH3_mix16B(input+len-32, secret+48, seed); - } - acc += XXH3_mix16B(input+0, secret+0, seed); - acc += XXH3_mix16B(input+len-16, secret+16, seed); - - return XXH3_avalanche(acc); - } -} - -#define XXH3_MIDSIZE_MAX 240 - -XXH_NO_INLINE XXH64_hash_t -XXH3_len_129to240_64b(const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize, - XXH64_hash_t seed) -{ - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize; - XXH_ASSERT(128 < len && len <= XXH3_MIDSIZE_MAX); - - #define XXH3_MIDSIZE_STARTOFFSET 3 - #define XXH3_MIDSIZE_LASTOFFSET 17 - - { xxh_u64 acc = len * PRIME64_1; - int const nbRounds = (int)len / 16; - int i; - for (i=0; i<8; i++) { - acc += XXH3_mix16B(input+(16*i), secret+(16*i), seed); - } - acc = XXH3_avalanche(acc); - XXH_ASSERT(nbRounds >= 8); - for (i=8 ; i < nbRounds; i++) { - acc += XXH3_mix16B(input+(16*i), secret+(16*(i-8)) + XXH3_MIDSIZE_STARTOFFSET, seed); - } - /* last bytes */ - acc += XXH3_mix16B(input + len - 16, secret + XXH3_SECRET_SIZE_MIN - XXH3_MIDSIZE_LASTOFFSET, seed); - return XXH3_avalanche(acc); - } -} - -/* === Public entry point === */ - -XXH_PUBLIC_API XXH64_hash_t XXH3_64bits(const void* input, size_t len) -{ - if (len <= 16) return XXH3_len_0to16_64b((const xxh_u8*)input, len, kSecret, 0); - if (len <= 128) return XXH3_len_17to128_64b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), 0); - if (len <= XXH3_MIDSIZE_MAX) return XXH3_len_129to240_64b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), 0); - return XXH3_hashLong_64b_defaultSecret((const xxh_u8*)input, len); -} - -XXH_PUBLIC_API XXH64_hash_t -XXH3_64bits_withSecret(const void* input, size_t len, const void* secret, size_t secretSize) -{ - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); - /* if an action must be taken should `secret` conditions not be respected, - * it should be done here. - * For now, it's a contract pre-condition. - * Adding a check and a branch here would cost performance at every hash */ - if (len <= 16) return XXH3_len_0to16_64b((const xxh_u8*)input, len, (const xxh_u8*)secret, 0); - if (len <= 128) return XXH3_len_17to128_64b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretSize, 0); - if (len <= XXH3_MIDSIZE_MAX) return XXH3_len_129to240_64b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretSize, 0); - return XXH3_hashLong_64b_withSecret((const xxh_u8*)input, len, (const xxh_u8*)secret, secretSize); -} - -XXH_PUBLIC_API XXH64_hash_t -XXH3_64bits_withSeed(const void* input, size_t len, XXH64_hash_t seed) -{ - if (len <= 16) return XXH3_len_0to16_64b((const xxh_u8*)input, len, kSecret, seed); - if (len <= 128) return XXH3_len_17to128_64b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), seed); - if (len <= XXH3_MIDSIZE_MAX) return XXH3_len_129to240_64b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), seed); - return XXH3_hashLong_64b_withSeed((const xxh_u8*)input, len, seed); -} - -/* === XXH3 streaming === */ - -XXH_PUBLIC_API XXH3_state_t* XXH3_createState(void) -{ - return (XXH3_state_t*)XXH_malloc(sizeof(XXH3_state_t)); -} - -XXH_PUBLIC_API XXH_errorcode XXH3_freeState(XXH3_state_t* statePtr) -{ - XXH_free(statePtr); - return XXH_OK; -} - -XXH_PUBLIC_API void -XXH3_copyState(XXH3_state_t* dst_state, const XXH3_state_t* src_state) -{ - memcpy(dst_state, src_state, sizeof(*dst_state)); -} - -static void -XXH3_64bits_reset_internal(XXH3_state_t* statePtr, - XXH64_hash_t seed, - const xxh_u8* secret, size_t secretSize) -{ - XXH_ASSERT(statePtr != NULL); - memset(statePtr, 0, sizeof(*statePtr)); - statePtr->acc[0] = PRIME32_3; - statePtr->acc[1] = PRIME64_1; - statePtr->acc[2] = PRIME64_2; - statePtr->acc[3] = PRIME64_3; - statePtr->acc[4] = PRIME64_4; - statePtr->acc[5] = PRIME32_2; - statePtr->acc[6] = PRIME64_5; - statePtr->acc[7] = PRIME32_1; - statePtr->seed = seed; - XXH_ASSERT(secret != NULL); - statePtr->secret = secret; - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); - statePtr->secretLimit = (XXH32_hash_t)(secretSize - STRIPE_LEN); - statePtr->nbStripesPerBlock = statePtr->secretLimit / XXH_SECRET_CONSUME_RATE; -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_64bits_reset(XXH3_state_t* statePtr) -{ - if (statePtr == NULL) return XXH_ERROR; - XXH3_64bits_reset_internal(statePtr, 0, kSecret, XXH_SECRET_DEFAULT_SIZE); - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_64bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize) -{ - if (statePtr == NULL) return XXH_ERROR; - XXH3_64bits_reset_internal(statePtr, 0, (const xxh_u8*)secret, secretSize); - if (secret == NULL) return XXH_ERROR; - if (secretSize < XXH3_SECRET_SIZE_MIN) return XXH_ERROR; - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_64bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed) -{ - if (statePtr == NULL) return XXH_ERROR; - XXH3_64bits_reset_internal(statePtr, seed, kSecret, XXH_SECRET_DEFAULT_SIZE); - XXH3_initCustomSecret(statePtr->customSecret, seed); - statePtr->secret = statePtr->customSecret; - return XXH_OK; -} - -XXH_FORCE_INLINE void -XXH3_consumeStripes( xxh_u64* acc, - XXH32_hash_t* nbStripesSoFarPtr, XXH32_hash_t nbStripesPerBlock, - const xxh_u8* input, size_t totalStripes, - const xxh_u8* secret, size_t secretLimit, - XXH3_accWidth_e accWidth) -{ - XXH_ASSERT(*nbStripesSoFarPtr < nbStripesPerBlock); - if (nbStripesPerBlock - *nbStripesSoFarPtr <= totalStripes) { - /* need a scrambling operation */ - size_t const nbStripes = nbStripesPerBlock - *nbStripesSoFarPtr; - XXH3_accumulate(acc, input, secret + nbStripesSoFarPtr[0] * XXH_SECRET_CONSUME_RATE, nbStripes, accWidth); - XXH3_scrambleAcc(acc, secret + secretLimit); - XXH3_accumulate(acc, input + nbStripes * STRIPE_LEN, secret, totalStripes - nbStripes, accWidth); - *nbStripesSoFarPtr = (XXH32_hash_t)(totalStripes - nbStripes); - } else { - XXH3_accumulate(acc, input, secret + nbStripesSoFarPtr[0] * XXH_SECRET_CONSUME_RATE, totalStripes, accWidth); - *nbStripesSoFarPtr += (XXH32_hash_t)totalStripes; - } -} - -XXH_FORCE_INLINE XXH_errorcode -XXH3_update(XXH3_state_t* state, const xxh_u8* input, size_t len, XXH3_accWidth_e accWidth) -{ - if (input==NULL) -#if defined(XXH_ACCEPT_NULL_INPUT_POINTER) && (XXH_ACCEPT_NULL_INPUT_POINTER>=1) - return XXH_OK; -#else - return XXH_ERROR; -#endif - - { const xxh_u8* const bEnd = input + len; - - state->totalLen += len; - - if (state->bufferedSize + len <= XXH3_INTERNALBUFFER_SIZE) { /* fill in tmp buffer */ - XXH_memcpy(state->buffer + state->bufferedSize, input, len); - state->bufferedSize += (XXH32_hash_t)len; - return XXH_OK; - } - /* input now > XXH3_INTERNALBUFFER_SIZE */ - - #define XXH3_INTERNALBUFFER_STRIPES (XXH3_INTERNALBUFFER_SIZE / STRIPE_LEN) - XXH_STATIC_ASSERT(XXH3_INTERNALBUFFER_SIZE % STRIPE_LEN == 0); /* clean multiple */ - - if (state->bufferedSize) { /* some input within internal buffer: fill then consume it */ - size_t const loadSize = XXH3_INTERNALBUFFER_SIZE - state->bufferedSize; - XXH_memcpy(state->buffer + state->bufferedSize, input, loadSize); - input += loadSize; - XXH3_consumeStripes(state->acc, - &state->nbStripesSoFar, state->nbStripesPerBlock, - state->buffer, XXH3_INTERNALBUFFER_STRIPES, - state->secret, state->secretLimit, - accWidth); - state->bufferedSize = 0; - } - - /* consume input by full buffer quantities */ - if (input+XXH3_INTERNALBUFFER_SIZE <= bEnd) { - const xxh_u8* const limit = bEnd - XXH3_INTERNALBUFFER_SIZE; - do { - XXH3_consumeStripes(state->acc, - &state->nbStripesSoFar, state->nbStripesPerBlock, - input, XXH3_INTERNALBUFFER_STRIPES, - state->secret, state->secretLimit, - accWidth); - input += XXH3_INTERNALBUFFER_SIZE; - } while (input<=limit); - } - - if (input < bEnd) { /* some remaining input input : buffer it */ - XXH_memcpy(state->buffer, input, (size_t)(bEnd-input)); - state->bufferedSize = (XXH32_hash_t)(bEnd-input); - } - } - - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_64bits_update(XXH3_state_t* state, const void* input, size_t len) -{ - return XXH3_update(state, (const xxh_u8*)input, len, XXH3_acc_64bits); -} - - -XXH_FORCE_INLINE void -XXH3_digest_long (XXH64_hash_t* acc, const XXH3_state_t* state, XXH3_accWidth_e accWidth) -{ - memcpy(acc, state->acc, sizeof(state->acc)); /* digest locally, state remains unaltered, and can continue ingesting more input afterwards */ - if (state->bufferedSize >= STRIPE_LEN) { - size_t const totalNbStripes = state->bufferedSize / STRIPE_LEN; - XXH32_hash_t nbStripesSoFar = state->nbStripesSoFar; - XXH3_consumeStripes(acc, - &nbStripesSoFar, state->nbStripesPerBlock, - state->buffer, totalNbStripes, - state->secret, state->secretLimit, - accWidth); - if (state->bufferedSize % STRIPE_LEN) { /* one last partial stripe */ - XXH3_accumulate_512(acc, - state->buffer + state->bufferedSize - STRIPE_LEN, - state->secret + state->secretLimit - XXH_SECRET_LASTACC_START, - accWidth); - } - } else { /* bufferedSize < STRIPE_LEN */ - if (state->bufferedSize) { /* one last stripe */ - xxh_u8 lastStripe[STRIPE_LEN]; - size_t const catchupSize = STRIPE_LEN - state->bufferedSize; - memcpy(lastStripe, state->buffer + sizeof(state->buffer) - catchupSize, catchupSize); - memcpy(lastStripe + catchupSize, state->buffer, state->bufferedSize); - XXH3_accumulate_512(acc, - lastStripe, - state->secret + state->secretLimit - XXH_SECRET_LASTACC_START, - accWidth); - } } -} - -XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_digest (const XXH3_state_t* state) -{ - if (state->totalLen > XXH3_MIDSIZE_MAX) { - XXH_ALIGN(XXH_ACC_ALIGN) XXH64_hash_t acc[ACC_NB]; - XXH3_digest_long(acc, state, XXH3_acc_64bits); - return XXH3_mergeAccs(acc, state->secret + XXH_SECRET_MERGEACCS_START, (xxh_u64)state->totalLen * PRIME64_1); - } - /* len <= XXH3_MIDSIZE_MAX : short code */ - if (state->seed) - return XXH3_64bits_withSeed(state->buffer, (size_t)state->totalLen, state->seed); - return XXH3_64bits_withSecret(state->buffer, (size_t)(state->totalLen), state->secret, state->secretLimit + STRIPE_LEN); -} - -/* ========================================== - * XXH3 128 bits (=> XXH128) - * ========================================== */ - -XXH_FORCE_INLINE XXH128_hash_t -XXH3_len_1to3_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(input != NULL); - XXH_ASSERT(1 <= len && len <= 3); - XXH_ASSERT(secret != NULL); - { xxh_u8 const c1 = input[0]; - xxh_u8 const c2 = input[len >> 1]; - xxh_u8 const c3 = input[len - 1]; - xxh_u32 const combinedl = ((xxh_u32)c1) + (((xxh_u32)c2) << 8) + (((xxh_u32)c3) << 16) + (((xxh_u32)len) << 24); - xxh_u32 const combinedh = XXH_swap32(combinedl); - xxh_u64 const keyed_lo = (xxh_u64)combinedl ^ (XXH_readLE32(secret) + seed); - xxh_u64 const keyed_hi = (xxh_u64)combinedh ^ (XXH_readLE32(secret+4) - seed); - xxh_u64 const mixedl = keyed_lo * PRIME64_1; - xxh_u64 const mixedh = keyed_hi * PRIME64_5; - XXH128_hash_t const h128 = { XXH3_avalanche(mixedl) /*low64*/, XXH3_avalanche(mixedh) /*high64*/ }; - return h128; - } -} - - -XXH_FORCE_INLINE XXH128_hash_t -XXH3_len_4to8_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(input != NULL); - XXH_ASSERT(secret != NULL); - XXH_ASSERT(4 <= len && len <= 8); - { xxh_u32 const input_lo = XXH_readLE32(input); - xxh_u32 const input_hi = XXH_readLE32(input + len - 4); - xxh_u64 const input_64_lo = input_lo + ((xxh_u64)input_hi << 32); - xxh_u64 const input_64_hi = XXH_swap64(input_64_lo); - xxh_u64 const keyed_lo = input_64_lo ^ (XXH_readLE64(secret) + seed); - xxh_u64 const keyed_hi = input_64_hi ^ (XXH_readLE64(secret + 8) - seed); - xxh_u64 const mix64l1 = len + ((keyed_lo ^ (keyed_lo >> 51)) * PRIME32_1); - xxh_u64 const mix64l2 = (mix64l1 ^ (mix64l1 >> 47)) * PRIME64_2; - xxh_u64 const mix64h1 = ((keyed_hi ^ (keyed_hi >> 47)) * PRIME64_1) - len; - xxh_u64 const mix64h2 = (mix64h1 ^ (mix64h1 >> 43)) * PRIME64_4; - { XXH128_hash_t const h128 = { XXH3_avalanche(mix64l2) /*low64*/, XXH3_avalanche(mix64h2) /*high64*/ }; - return h128; - } } -} - -XXH_FORCE_INLINE XXH128_hash_t -XXH3_len_9to16_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(input != NULL); - XXH_ASSERT(secret != NULL); - XXH_ASSERT(9 <= len && len <= 16); - { xxh_u64 const input_lo = XXH_readLE64(input) ^ (XXH_readLE64(secret) + seed); - xxh_u64 const input_hi = XXH_readLE64(input + len - 8) ^ (XXH_readLE64(secret+8) - seed); - XXH128_hash_t m128 = XXH_mult64to128(input_lo ^ input_hi, PRIME64_1); - xxh_u64 const lenContrib = XXH_mult32to64(len, PRIME32_5); - m128.low64 += lenContrib; - m128.high64 += input_hi * PRIME64_1; - m128.low64 ^= (m128.high64 >> 32); - { XXH128_hash_t h128 = XXH_mult64to128(m128.low64, PRIME64_2); - h128.high64 += m128.high64 * PRIME64_2; - h128.low64 = XXH3_avalanche(h128.low64); - h128.high64 = XXH3_avalanche(h128.high64); - return h128; - } } -} - -/* Assumption : `secret` size is >= 16 - * Note : it should be >= XXH3_SECRET_SIZE_MIN anyway */ -XXH_FORCE_INLINE XXH128_hash_t -XXH3_len_0to16_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed) -{ - XXH_ASSERT(len <= 16); - { if (len > 8) return XXH3_len_9to16_128b(input, len, secret, seed); - if (len >= 4) return XXH3_len_4to8_128b(input, len, secret, seed); - if (len) return XXH3_len_1to3_128b(input, len, secret, seed); - { XXH128_hash_t const h128 = { 0, 0 }; - return h128; - } } -} - -XXH_FORCE_INLINE XXH128_hash_t -XXH3_hashLong_128b_internal(const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize) -{ - XXH_ALIGN(XXH_ACC_ALIGN) xxh_u64 acc[ACC_NB] = XXH3_INIT_ACC; - - XXH3_hashLong_internal_loop(acc, input, len, secret, secretSize, XXH3_acc_128bits); - - /* converge into final hash */ - XXH_STATIC_ASSERT(sizeof(acc) == 64); - XXH_ASSERT(secretSize >= sizeof(acc) + XXH_SECRET_MERGEACCS_START); - { xxh_u64 const low64 = XXH3_mergeAccs(acc, secret + XXH_SECRET_MERGEACCS_START, (xxh_u64)len * PRIME64_1); - xxh_u64 const high64 = XXH3_mergeAccs(acc, secret + secretSize - sizeof(acc) - XXH_SECRET_MERGEACCS_START, ~((xxh_u64)len * PRIME64_2)); - XXH128_hash_t const h128 = { low64, high64 }; - return h128; - } -} - -XXH_NO_INLINE XXH128_hash_t /* It's important for performance that XXH3_hashLong is not inlined. Not sure why (uop cache maybe ?), but difference is large and easily measurable */ -XXH3_hashLong_128b_defaultSecret(const xxh_u8* input, size_t len) -{ - return XXH3_hashLong_128b_internal(input, len, kSecret, sizeof(kSecret)); -} - -XXH_NO_INLINE XXH128_hash_t /* It's important for performance that XXH3_hashLong is not inlined. Not sure why (uop cache maybe ?), but difference is large and easily measurable */ -XXH3_hashLong_128b_withSecret(const xxh_u8* input, size_t len, - const xxh_u8* secret, size_t secretSize) -{ - return XXH3_hashLong_128b_internal(input, len, secret, secretSize); -} - -XXH_NO_INLINE XXH128_hash_t /* It's important for performance that XXH3_hashLong is not inlined. Not sure why (uop cache maybe ?), but difference is large and easily measurable */ -XXH3_hashLong_128b_withSeed(const xxh_u8* input, size_t len, XXH64_hash_t seed) -{ - XXH_ALIGN(8) xxh_u8 secret[XXH_SECRET_DEFAULT_SIZE]; - if (seed == 0) return XXH3_hashLong_128b_defaultSecret(input, len); - XXH3_initCustomSecret(secret, seed); - return XXH3_hashLong_128b_internal(input, len, secret, sizeof(secret)); -} - - -XXH_FORCE_INLINE XXH128_hash_t -XXH128_mix32B(XXH128_hash_t acc, const xxh_u8* input_1, const xxh_u8* input_2, const xxh_u8* secret, XXH64_hash_t seed) -{ - acc.low64 += XXH3_mix16B (input_1, secret+0, seed); - acc.low64 ^= XXH_readLE64(input_2) + XXH_readLE64(input_2 + 8); - acc.high64 += XXH3_mix16B (input_2, secret+16, seed); - acc.high64 ^= XXH_readLE64(input_1) + XXH_readLE64(input_1 + 8); - return acc; -} - -XXH_NO_INLINE XXH128_hash_t -XXH3_len_129to240_128b(const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize, - XXH64_hash_t seed) -{ - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize; - XXH_ASSERT(128 < len && len <= XXH3_MIDSIZE_MAX); - - { XXH128_hash_t acc; - int const nbRounds = (int)len / 32; - int i; - acc.low64 = len * PRIME64_1; - acc.high64 = 0; - for (i=0; i<4; i++) { - acc = XXH128_mix32B(acc, input+(32*i), input+(32*i)+16, secret+(32*i), seed); - } - acc.low64 = XXH3_avalanche(acc.low64); - acc.high64 = XXH3_avalanche(acc.high64); - XXH_ASSERT(nbRounds >= 4); - for (i=4 ; i < nbRounds; i++) { - acc = XXH128_mix32B(acc, input+(32*i), input+(32*i)+16, secret+XXH3_MIDSIZE_STARTOFFSET+(32*(i-4)), seed); - } - /* last bytes */ - acc = XXH128_mix32B(acc, input + len - 16, input + len - 32, secret + XXH3_SECRET_SIZE_MIN - XXH3_MIDSIZE_LASTOFFSET - 16, 0ULL - seed); - - { xxh_u64 const low64 = acc.low64 + acc.high64; - xxh_u64 const high64 = (acc.low64 * PRIME64_1) + (acc.high64 * PRIME64_4) + ((len - seed) * PRIME64_2); - XXH128_hash_t const h128 = { XXH3_avalanche(low64), (XXH64_hash_t)0 - XXH3_avalanche(high64) }; - return h128; - } - } -} - - -XXH_FORCE_INLINE XXH128_hash_t -XXH3_len_17to128_128b(const xxh_u8* XXH_RESTRICT input, size_t len, - const xxh_u8* XXH_RESTRICT secret, size_t secretSize, - XXH64_hash_t seed) -{ - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize; - XXH_ASSERT(16 < len && len <= 128); - - { XXH128_hash_t acc; - acc.low64 = len * PRIME64_1; - acc.high64 = 0; - if (len > 32) { - if (len > 64) { - if (len > 96) { - acc = XXH128_mix32B(acc, input+48, input+len-64, secret+96, seed); - } - acc = XXH128_mix32B(acc, input+32, input+len-48, secret+64, seed); - } - acc = XXH128_mix32B(acc, input+16, input+len-32, secret+32, seed); - } - acc = XXH128_mix32B(acc, input, input+len-16, secret, seed); - { xxh_u64 const low64 = acc.low64 + acc.high64; - xxh_u64 const high64 = (acc.low64 * PRIME64_1) + (acc.high64 * PRIME64_4) + ((len - seed) * PRIME64_2); - XXH128_hash_t const h128 = { XXH3_avalanche(low64), (XXH64_hash_t)0 - XXH3_avalanche(high64) }; - return h128; - } - } -} - -XXH_PUBLIC_API XXH128_hash_t XXH3_128bits(const void* input, size_t len) -{ - if (len <= 16) return XXH3_len_0to16_128b((const xxh_u8*)input, len, kSecret, 0); - if (len <= 128) return XXH3_len_17to128_128b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), 0); - if (len <= XXH3_MIDSIZE_MAX) return XXH3_len_129to240_128b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), 0); - return XXH3_hashLong_128b_defaultSecret((const xxh_u8*)input, len); -} - -XXH_PUBLIC_API XXH128_hash_t -XXH3_128bits_withSecret(const void* input, size_t len, const void* secret, size_t secretSize) -{ - XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); - /* if an action must be taken should `secret` conditions not be respected, - * it should be done here. - * For now, it's a contract pre-condition. - * Adding a check and a branch here would cost performance at every hash */ - if (len <= 16) return XXH3_len_0to16_128b((const xxh_u8*)input, len, (const xxh_u8*)secret, 0); - if (len <= 128) return XXH3_len_17to128_128b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretSize, 0); - if (len <= XXH3_MIDSIZE_MAX) return XXH3_len_129to240_128b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretSize, 0); - return XXH3_hashLong_128b_withSecret((const xxh_u8*)input, len, (const xxh_u8*)secret, secretSize); -} - -XXH_PUBLIC_API XXH128_hash_t -XXH3_128bits_withSeed(const void* input, size_t len, XXH64_hash_t seed) -{ - if (len <= 16) return XXH3_len_0to16_128b((const xxh_u8*)input, len, kSecret, seed); - if (len <= 128) return XXH3_len_17to128_128b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), seed); - if (len <= XXH3_MIDSIZE_MAX) return XXH3_len_129to240_128b((const xxh_u8*)input, len, kSecret, sizeof(kSecret), seed); - return XXH3_hashLong_128b_withSeed((const xxh_u8*)input, len, seed); -} - -XXH_PUBLIC_API XXH128_hash_t -XXH128(const void* input, size_t len, XXH64_hash_t seed) -{ - return XXH3_128bits_withSeed(input, len, seed); -} - - -/* === XXH3 128-bit streaming === */ - -/* all the functions are actually the same as for 64-bit streaming variant, - just the reset one is different (different initial acc values for 0,5,6,7), - and near the end of the digest function */ - -static void -XXH3_128bits_reset_internal(XXH3_state_t* statePtr, - XXH64_hash_t seed, - const xxh_u8* secret, size_t secretSize) -{ - XXH3_64bits_reset_internal(statePtr, seed, secret, secretSize); -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_128bits_reset(XXH3_state_t* statePtr) -{ - if (statePtr == NULL) return XXH_ERROR; - XXH3_128bits_reset_internal(statePtr, 0, kSecret, XXH_SECRET_DEFAULT_SIZE); - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_128bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize) -{ - if (statePtr == NULL) return XXH_ERROR; - XXH3_128bits_reset_internal(statePtr, 0, (const xxh_u8*)secret, secretSize); - if (secret == NULL) return XXH_ERROR; - if (secretSize < XXH3_SECRET_SIZE_MIN) return XXH_ERROR; - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_128bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed) -{ - if (statePtr == NULL) return XXH_ERROR; - XXH3_128bits_reset_internal(statePtr, seed, kSecret, XXH_SECRET_DEFAULT_SIZE); - XXH3_initCustomSecret(statePtr->customSecret, seed); - statePtr->secret = statePtr->customSecret; - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode -XXH3_128bits_update(XXH3_state_t* state, const void* input, size_t len) -{ - return XXH3_update(state, (const xxh_u8*)input, len, XXH3_acc_128bits); -} - -XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_digest (const XXH3_state_t* state) -{ - if (state->totalLen > XXH3_MIDSIZE_MAX) { - XXH_ALIGN(XXH_ACC_ALIGN) XXH64_hash_t acc[ACC_NB]; - XXH3_digest_long(acc, state, XXH3_acc_128bits); - XXH_ASSERT(state->secretLimit + STRIPE_LEN >= sizeof(acc) + XXH_SECRET_MERGEACCS_START); - { xxh_u64 const low64 = XXH3_mergeAccs(acc, state->secret + XXH_SECRET_MERGEACCS_START, (xxh_u64)state->totalLen * PRIME64_1); - xxh_u64 const high64 = XXH3_mergeAccs(acc, state->secret + state->secretLimit + STRIPE_LEN - sizeof(acc) - XXH_SECRET_MERGEACCS_START, ~((xxh_u64)state->totalLen * PRIME64_2)); - XXH128_hash_t const h128 = { low64, high64 }; - return h128; - } - } - /* len <= XXH3_MIDSIZE_MAX : short code */ - if (state->seed) - return XXH3_128bits_withSeed(state->buffer, (size_t)state->totalLen, state->seed); - return XXH3_128bits_withSecret(state->buffer, (size_t)(state->totalLen), state->secret, state->secretLimit + STRIPE_LEN); -} - -/* 128-bit utility functions */ - -#include /* memcmp */ - -/* return : 1 is equal, 0 if different */ -XXH_PUBLIC_API int XXH128_isEqual(XXH128_hash_t h1, XXH128_hash_t h2) -{ - /* note : XXH128_hash_t is compact, it has no padding byte */ - return !(memcmp(&h1, &h2, sizeof(h1))); -} - -/* This prototype is compatible with stdlib's qsort(). - * return : >0 if *h128_1 > *h128_2 - * <0 if *h128_1 < *h128_2 - * =0 if *h128_1 == *h128_2 */ -XXH_PUBLIC_API int XXH128_cmp(const void* h128_1, const void* h128_2) -{ - XXH128_hash_t const h1 = *(const XXH128_hash_t*)h128_1; - XXH128_hash_t const h2 = *(const XXH128_hash_t*)h128_2; - int const hcmp = (h1.high64 > h2.high64) - (h2.high64 > h1.high64); - /* note : bets that, in most cases, hash values are different */ - if (hcmp) return hcmp; - return (h1.low64 > h2.low64) - (h2.low64 > h1.low64); -} - - -/*====== Canonical representation ======*/ -XXH_PUBLIC_API void -XXH128_canonicalFromHash(XXH128_canonical_t* dst, XXH128_hash_t hash) -{ - XXH_STATIC_ASSERT(sizeof(XXH128_canonical_t) == sizeof(XXH128_hash_t)); - if (XXH_CPU_LITTLE_ENDIAN) { - hash.high64 = XXH_swap64(hash.high64); - hash.low64 = XXH_swap64(hash.low64); - } - memcpy(dst, &hash.high64, sizeof(hash.high64)); - memcpy((char*)dst + sizeof(hash.high64), &hash.low64, sizeof(hash.low64)); -} - -XXH_PUBLIC_API XXH128_hash_t -XXH128_hashFromCanonical(const XXH128_canonical_t* src) -{ - XXH128_hash_t h; - h.high64 = XXH_readBE64(src); - h.low64 = XXH_readBE64(src->digest + 8); - return h; -} - - - -#endif /* XXH3_H */ diff --git a/source/thirdparty/include/xxhash.h b/source/thirdparty/include/xxhash.h deleted file mode 100644 index 60435bed1..000000000 --- a/source/thirdparty/include/xxhash.h +++ /dev/null @@ -1,587 +0,0 @@ -/* - xxHash - Extremely Fast Hash algorithm - Header File - Copyright (C) 2012-2016, Yann Collet. - - BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php) - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are - met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following disclaimer - in the documentation and/or other materials provided with the - distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - - You can contact the author at : - - xxHash source repository : https://github.com/Cyan4973/xxHash -*/ - -/* Notice extracted from xxHash homepage : - -xxHash is an extremely fast Hash algorithm, running at RAM speed limits. -It also successfully passes all tests from the SMHasher suite. - -Comparison (single thread, Windows Seven 32 bits, using SMHasher on a Core 2 Duo @3GHz) - -Name Speed Q.Score Author -xxHash 5.4 GB/s 10 -CrapWow 3.2 GB/s 2 Andrew -MumurHash 3a 2.7 GB/s 10 Austin Appleby -SpookyHash 2.0 GB/s 10 Bob Jenkins -SBox 1.4 GB/s 9 Bret Mulvey -Lookup3 1.2 GB/s 9 Bob Jenkins -SuperFastHash 1.2 GB/s 1 Paul Hsieh -CityHash64 1.05 GB/s 10 Pike & Alakuijala -FNV 0.55 GB/s 5 Fowler, Noll, Vo -CRC32 0.43 GB/s † 9 -MD5-32 0.33 GB/s 10 Ronald L. Rivest -SHA1-32 0.28 GB/s 10 - -Note †: other CRC32 implementations can be over 40x faster than SMHasher's: -http://fastcompression.blogspot.com/2019/03/presenting-xxh3.html?showComment=1552696407071#c3490092340461170735 - -Q.Score is a measure of quality of the hash function. -It depends on successfully passing SMHasher test set. -10 is a perfect score. - -A 64-bit version, named XXH64, is available since r35. -It offers much better speed, but for 64-bit applications only. -Name Speed on 64 bits Speed on 32 bits -XXH64 13.8 GB/s 1.9 GB/s -XXH32 6.8 GB/s 6.0 GB/s -*/ - -#ifndef XXHASH_H_5627135585666179 -#define XXHASH_H_5627135585666179 1 - -#if defined (__cplusplus) -extern "C" { -#endif - - -/* **************************** -* Definitions -******************************/ -#include /* size_t */ -typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode; - - -/* **************************** - * API modifier - ******************************/ -/** XXH_INLINE_ALL (and XXH_PRIVATE_API) - * This build macro includes xxhash functions in `static` mode - * in order to inline them, and remove their symbol from the public list. - * Inlining offers great performance improvement on small keys, - * and dramatic ones when length is expressed as a compile-time constant. - * See https://fastcompression.blogspot.com/2018/03/xxhash-for-small-keys-impressive-power.html . - * Methodology : - * #define XXH_INLINE_ALL - * #include "xxhash.h" - * `xxhash.c` is automatically included. - * It's not useful to compile and link it as a separate object. - */ -#if defined(XXH_INLINE_ALL) || defined(XXH_PRIVATE_API) -# ifndef XXH_STATIC_LINKING_ONLY -# define XXH_STATIC_LINKING_ONLY -# endif -# if defined(__GNUC__) -# define XXH_PUBLIC_API static __inline __attribute__((unused)) -# elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) -# define XXH_PUBLIC_API static inline -# elif defined(_MSC_VER) -# define XXH_PUBLIC_API static __inline -# else - /* this version may generate warnings for unused static functions */ -# define XXH_PUBLIC_API static -# endif -#else -# if defined(WIN32) && defined(_MSC_VER) && (defined(XXH_IMPORT) || defined(XXH_EXPORT)) -# ifdef XXH_EXPORT -# define XXH_PUBLIC_API __declspec(dllexport) -# elif XXH_IMPORT -# define XXH_PUBLIC_API __declspec(dllimport) -# endif -# else -# define XXH_PUBLIC_API /* do nothing */ -# endif -#endif /* XXH_INLINE_ALL || XXH_PRIVATE_API */ - -/*! XXH_NAMESPACE, aka Namespace Emulation : - * - * If you want to include _and expose_ xxHash functions from within your own library, - * but also want to avoid symbol collisions with other libraries which may also include xxHash, - * - * you can use XXH_NAMESPACE, to automatically prefix any public symbol from xxhash library - * with the value of XXH_NAMESPACE (therefore, avoid NULL and numeric values). - * - * Note that no change is required within the calling program as long as it includes `xxhash.h` : - * regular symbol name will be automatically translated by this header. - */ -#ifdef XXH_NAMESPACE -# define XXH_CAT(A,B) A##B -# define XXH_NAME2(A,B) XXH_CAT(A,B) -# define XXH_versionNumber XXH_NAME2(XXH_NAMESPACE, XXH_versionNumber) -# define XXH32 XXH_NAME2(XXH_NAMESPACE, XXH32) -# define XXH32_createState XXH_NAME2(XXH_NAMESPACE, XXH32_createState) -# define XXH32_freeState XXH_NAME2(XXH_NAMESPACE, XXH32_freeState) -# define XXH32_reset XXH_NAME2(XXH_NAMESPACE, XXH32_reset) -# define XXH32_update XXH_NAME2(XXH_NAMESPACE, XXH32_update) -# define XXH32_digest XXH_NAME2(XXH_NAMESPACE, XXH32_digest) -# define XXH32_copyState XXH_NAME2(XXH_NAMESPACE, XXH32_copyState) -# define XXH32_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH32_canonicalFromHash) -# define XXH32_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH32_hashFromCanonical) -# define XXH64 XXH_NAME2(XXH_NAMESPACE, XXH64) -# define XXH64_createState XXH_NAME2(XXH_NAMESPACE, XXH64_createState) -# define XXH64_freeState XXH_NAME2(XXH_NAMESPACE, XXH64_freeState) -# define XXH64_reset XXH_NAME2(XXH_NAMESPACE, XXH64_reset) -# define XXH64_update XXH_NAME2(XXH_NAMESPACE, XXH64_update) -# define XXH64_digest XXH_NAME2(XXH_NAMESPACE, XXH64_digest) -# define XXH64_copyState XXH_NAME2(XXH_NAMESPACE, XXH64_copyState) -# define XXH64_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH64_canonicalFromHash) -# define XXH64_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH64_hashFromCanonical) -#endif - - -/* ************************************* -* Version -***************************************/ -#define XXH_VERSION_MAJOR 0 -#define XXH_VERSION_MINOR 7 -#define XXH_VERSION_RELEASE 2 -#define XXH_VERSION_NUMBER (XXH_VERSION_MAJOR *100*100 + XXH_VERSION_MINOR *100 + XXH_VERSION_RELEASE) -XXH_PUBLIC_API unsigned XXH_versionNumber (void); - - -/*-********************************************************************** -* 32-bit hash -************************************************************************/ -#if !defined (__VMS) \ - && (defined (__cplusplus) \ - || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) ) -# include - typedef uint32_t XXH32_hash_t; -#else -# include -# if UINT_MAX == 0xFFFFFFFFUL - typedef unsigned int XXH32_hash_t; -# else -# if ULONG_MAX == 0xFFFFFFFFUL - typedef unsigned long XXH32_hash_t; -# else -# error "unsupported platform : need a 32-bit type" -# endif -# endif -#endif - -/*! XXH32() : - Calculate the 32-bit hash of sequence "length" bytes stored at memory address "input". - The memory between input & input+length must be valid (allocated and read-accessible). - "seed" can be used to alter the result predictably. - Speed on Core 2 Duo @ 3 GHz (single thread, SMHasher benchmark) : 5.4 GB/s */ -XXH_PUBLIC_API XXH32_hash_t XXH32 (const void* input, size_t length, XXH32_hash_t seed); - -/*====== Streaming ======*/ - -/* - * Streaming functions generate the xxHash value from an incrememtal input. - * This method is slower than single-call functions, due to state management. - * For small inputs, prefer `XXH32()` and `XXH64()`, which are better optimized. - * - * XXH state must first be allocated, using XXH*_createState() . - * - * Start a new hash by initializing state with a seed, using XXH*_reset(). - * - * Then, feed the hash state by calling XXH*_update() as many times as necessary. - * The function returns an error code, with 0 meaning OK, and any other value meaning there is an error. - * - * Finally, a hash value can be produced anytime, by using XXH*_digest(). - * This function returns the nn-bits hash as an int or long long. - * - * It's still possible to continue inserting input into the hash state after a digest, - * and generate some new hash values later on, by invoking again XXH*_digest(). - * - * When done, release the state, using XXH*_freeState(). - */ - -typedef struct XXH32_state_s XXH32_state_t; /* incomplete type */ -XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void); -XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr); -XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* dst_state, const XXH32_state_t* src_state); - -XXH_PUBLIC_API XXH_errorcode XXH32_reset (XXH32_state_t* statePtr, XXH32_hash_t seed); -XXH_PUBLIC_API XXH_errorcode XXH32_update (XXH32_state_t* statePtr, const void* input, size_t length); -XXH_PUBLIC_API XXH32_hash_t XXH32_digest (const XXH32_state_t* statePtr); - -/*====== Canonical representation ======*/ - -/* Default return values from XXH functions are basic unsigned 32 and 64 bits. - * This the simplest and fastest format for further post-processing. - * However, this leaves open the question of what is the order of bytes, - * since little and big endian conventions will write the same number differently. - * - * The canonical representation settles this issue, - * by mandating big-endian convention, - * aka, the same convention as human-readable numbers (large digits first). - * When writing hash values to storage, sending them over a network, or printing them, - * it's highly recommended to use the canonical representation, - * to ensure portability across a wider range of systems, present and future. - * - * The following functions allow transformation of hash values into and from canonical format. - */ - -typedef struct { unsigned char digest[4]; } XXH32_canonical_t; -XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash); -XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src); - - -#ifndef XXH_NO_LONG_LONG -/*-********************************************************************** -* 64-bit hash -************************************************************************/ -#if !defined (__VMS) \ - && (defined (__cplusplus) \ - || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) ) -# include - typedef uint64_t XXH64_hash_t; -#else - /* the following type must have a width of 64-bit */ - typedef unsigned long long XXH64_hash_t; -#endif - -/*! XXH64() : - Calculate the 64-bit hash of sequence of length "len" stored at memory address "input". - "seed" can be used to alter the result predictably. - This function runs faster on 64-bit systems, but slower on 32-bit systems (see benchmark). -*/ -XXH_PUBLIC_API XXH64_hash_t XXH64 (const void* input, size_t length, XXH64_hash_t seed); - -/*====== Streaming ======*/ -typedef struct XXH64_state_s XXH64_state_t; /* incomplete type */ -XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void); -XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr); -XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* dst_state, const XXH64_state_t* src_state); - -XXH_PUBLIC_API XXH_errorcode XXH64_reset (XXH64_state_t* statePtr, XXH64_hash_t seed); -XXH_PUBLIC_API XXH_errorcode XXH64_update (XXH64_state_t* statePtr, const void* input, size_t length); -XXH_PUBLIC_API XXH64_hash_t XXH64_digest (const XXH64_state_t* statePtr); - -/*====== Canonical representation ======*/ -typedef struct { unsigned char digest[8]; } XXH64_canonical_t; -XXH_PUBLIC_API void XXH64_canonicalFromHash(XXH64_canonical_t* dst, XXH64_hash_t hash); -XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src); - - -#endif /* XXH_NO_LONG_LONG */ - - - -#ifdef XXH_STATIC_LINKING_ONLY - -/* ================================================================================================ - This section contains declarations which are not guaranteed to remain stable. - They may change in future versions, becoming incompatible with a different version of the library. - These declarations should only be used with static linking. - Never use them in association with dynamic linking ! -=================================================================================================== */ - -/* These definitions are only present to allow - * static allocation of XXH state, on stack or in a struct for example. - * Never **ever** use members directly. */ - -struct XXH32_state_s { - XXH32_hash_t total_len_32; - XXH32_hash_t large_len; - XXH32_hash_t v1; - XXH32_hash_t v2; - XXH32_hash_t v3; - XXH32_hash_t v4; - XXH32_hash_t mem32[4]; - XXH32_hash_t memsize; - XXH32_hash_t reserved; /* never read nor write, might be removed in a future version */ -}; /* typedef'd to XXH32_state_t */ - -#ifndef XXH_NO_LONG_LONG /* remove 64-bit support */ -struct XXH64_state_s { - XXH64_hash_t total_len; - XXH64_hash_t v1; - XXH64_hash_t v2; - XXH64_hash_t v3; - XXH64_hash_t v4; - XXH64_hash_t mem64[4]; - XXH32_hash_t memsize; - XXH32_hash_t reserved32; /* required for padding anyway */ - XXH64_hash_t reserved64; /* never read nor write, might be removed in a future version */ -}; /* typedef'd to XXH64_state_t */ -#endif /* XXH_NO_LONG_LONG */ - - -/*-********************************************************************** -* XXH3 -* New experimental hash -************************************************************************/ -#ifndef XXH_NO_LONG_LONG - - -/* ============================================ - * XXH3 is a new hash algorithm, - * featuring improved speed performance for both small and large inputs. - * See full speed analysis at : http://fastcompression.blogspot.com/2019/03/presenting-xxh3.html - * In general, expect XXH3 to run about ~2x faster on large inputs, - * and >3x faster on small ones, though exact differences depend on platform. - * - * The algorithm is portable, will generate the same hash on all platforms. - * It benefits greatly from vectorization units, but does not require it. - * - * XXH3 offers 2 variants, _64bits and _128bits. - * When only 64 bits are needed, prefer calling the _64bits variant : - * it reduces the amount of mixing, resulting in faster speed on small inputs. - * It's also generally simpler to manipulate a scalar return type than a struct. - * - * The XXH3 algorithm is still considered experimental. - * Produced results can still change between versions. - * Results produced by v0.7.x are not comparable with results from v0.7.y . - * It's nonetheless possible to use XXH3 for ephemeral data (local sessions), - * but avoid storing values in long-term storage for later reads. - * - * The API supports one-shot hashing, streaming mode, and custom secrets. - * - * There are still a number of opened questions that community can influence during the experimental period. - * I'm trying to list a few of them below, though don't consider this list as complete. - * - * - 128-bits output type : currently defined as a structure of two 64-bits fields. - * That's because 128-bit values do not exist in C standard. - * Note that it means that, at byte level, result is not identical depending on endianess. - * However, at field level, they are identical on all platforms. - * The canonical representation solves the issue of identical byte-level representation across platforms, - * which is necessary for serialization. - * Q1 : Would there be a better representation for a 128-bit hash result ? - * Q2 : Are the names of the inner 64-bit fields important ? Should they be changed ? - * - * - Prototype XXH128() : XXH128() uses the same arguments as XXH64(), for consistency. - * It means it maps to XXH3_128bits_withSeed(). - * This variant is slightly slower than XXH3_128bits(), - * because the seed is now part of the algorithm, and can't be simplified. - * Is that a good idea ? - * - * - Seed type for XXH128() : currently, it's a single 64-bit value, like the 64-bit variant. - * It could be argued that it's more logical to offer a 128-bit seed input parameter for a 128-bit hash. - * But 128-bit seed is more difficult to use, since it requires to pass a structure instead of a scalar value. - * Such a variant could either replace current one, or become an additional one. - * Farmhash, for example, offers both variants (the 128-bits seed variant is called `doubleSeed`). - * Follow up question : if both 64-bit and 128-bit seeds are allowed, which variant should be called XXH128 ? - * - * - Result for len==0 : Currently, the result of hashing a zero-length input is always `0`. - * It seems okay as a return value when using "default" secret and seed. - * But is it still fine to return `0` when secret or seed are non-default ? - * Are there use cases which could depend on generating a different hash result for zero-length input when the secret is different ? - * - * - Consistency (1) : Streaming XXH128 uses an XXH3 state, which is the same state as XXH3_64bits(). - * It means a 128bit streaming loop must invoke the following symbols : - * XXH3_createState(), XXH3_128bits_reset(), XXH3_128bits_update() (loop), XXH3_128bits_digest(), XXH3_freeState(). - * Is that consistent enough ? - * - * - Consistency (2) : The canonical representation of `XXH3_64bits` is provided by existing functions - * XXH64_canonicalFromHash(), and reverse operation XXH64_hashFromCanonical(). - * As a mirror, canonical functions for XXH128_hash_t results generated by `XXH3_128bits` - * are XXH128_canonicalFromHash() and XXH128_hashFromCanonical(). - * Which means, `XXH3` doesn't appear in the names, because canonical functions operate on a type, - * independently of which algorithm was used to generate that type. - * Is that consistent enough ? - */ - -#ifdef XXH_NAMESPACE -# define XXH3_64bits XXH_NAME2(XXH_NAMESPACE, XXH3_64bits) -# define XXH3_64bits_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_withSecret) -# define XXH3_64bits_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_withSeed) - -# define XXH3_createState XXH_NAME2(XXH_NAMESPACE, XXH3_createState) -# define XXH3_freeState XXH_NAME2(XXH_NAMESPACE, XXH3_freeState) -# define XXH3_copyState XXH_NAME2(XXH_NAMESPACE, XXH3_copyState) - -# define XXH3_64bits_reset XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_reset) -# define XXH3_64bits_reset_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_reset_withSeed) -# define XXH3_64bits_reset_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_reset_withSecret) -# define XXH3_64bits_update XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_update) -# define XXH3_64bits_digest XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_digest) -#endif - -/* XXH3_64bits() : - * default 64-bit variant, using default secret and default seed of 0. - * It's the fastest variant. */ -XXH_PUBLIC_API XXH64_hash_t XXH3_64bits(const void* data, size_t len); - -/* XXH3_64bits_withSecret() : - * It's possible to provide any blob of bytes as a "secret" to generate the hash. - * This makes it more difficult for an external actor to prepare an intentional collision. - * The secret *must* be large enough (>= XXH3_SECRET_SIZE_MIN). - * It should consist of random bytes. - * Avoid repeating same character, or sequences of bytes, - * and especially avoid swathes of \0. - * Failure to respect these conditions will result in a poor quality hash. - */ -#define XXH3_SECRET_SIZE_MIN 136 -XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_withSecret(const void* data, size_t len, const void* secret, size_t secretSize); - -/* XXH3_64bits_withSeed() : - * This variant generates on the fly a custom secret, - * based on the default secret, altered using the `seed` value. - * While this operation is decently fast, note that it's not completely free. - * note : seed==0 produces same results as XXH3_64bits() */ -XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_withSeed(const void* data, size_t len, XXH64_hash_t seed); - - -/* streaming 64-bit */ - -#if defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11+ */ -# include -# define XXH_ALIGN(n) alignas(n) -#elif defined(__GNUC__) -# define XXH_ALIGN(n) __attribute__ ((aligned(n))) -#elif defined(_MSC_VER) -# define XXH_ALIGN(n) __declspec(align(n)) -#else -# define XXH_ALIGN(n) /* disabled */ -#endif - -typedef struct XXH3_state_s XXH3_state_t; - -#define XXH3_SECRET_DEFAULT_SIZE 192 /* minimum XXH3_SECRET_SIZE_MIN */ -#define XXH3_INTERNALBUFFER_SIZE 256 -struct XXH3_state_s { - XXH_ALIGN(64) XXH64_hash_t acc[8]; - XXH_ALIGN(64) unsigned char customSecret[XXH3_SECRET_DEFAULT_SIZE]; /* used to store a custom secret generated from the seed. Makes state larger. Design might change */ - XXH_ALIGN(64) unsigned char buffer[XXH3_INTERNALBUFFER_SIZE]; - XXH32_hash_t bufferedSize; - XXH32_hash_t nbStripesPerBlock; - XXH32_hash_t nbStripesSoFar; - XXH32_hash_t secretLimit; - XXH32_hash_t reserved32; - XXH32_hash_t reserved32_2; - XXH64_hash_t totalLen; - XXH64_hash_t seed; - XXH64_hash_t reserved64; - const unsigned char* secret; /* note : there is some padding after, due to alignment on 64 bytes */ -}; /* typedef'd to XXH3_state_t */ - -/* Streaming requires state maintenance. - * This operation costs memory and cpu. - * As a consequence, streaming is slower than one-shot hashing. - * For better performance, prefer using one-shot functions whenever possible. */ - -XXH_PUBLIC_API XXH3_state_t* XXH3_createState(void); -XXH_PUBLIC_API XXH_errorcode XXH3_freeState(XXH3_state_t* statePtr); -XXH_PUBLIC_API void XXH3_copyState(XXH3_state_t* dst_state, const XXH3_state_t* src_state); - - -/* XXH3_64bits_reset() : - * initialize with default parameters. - * result will be equivalent to `XXH3_64bits()`. */ -XXH_PUBLIC_API XXH_errorcode XXH3_64bits_reset(XXH3_state_t* statePtr); -/* XXH3_64bits_reset_withSeed() : - * generate a custom secret from `seed`, and store it into state. - * digest will be equivalent to `XXH3_64bits_withSeed()`. */ -XXH_PUBLIC_API XXH_errorcode XXH3_64bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed); -/* XXH3_64bits_reset_withSecret() : - * `secret` is referenced, and must outlive the hash streaming session. - * secretSize must be >= XXH3_SECRET_SIZE_MIN. - */ -XXH_PUBLIC_API XXH_errorcode XXH3_64bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize); - -XXH_PUBLIC_API XXH_errorcode XXH3_64bits_update (XXH3_state_t* statePtr, const void* input, size_t length); -XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_digest (const XXH3_state_t* statePtr); - - -/* 128-bit */ - -#ifdef XXH_NAMESPACE -# define XXH128 XXH_NAME2(XXH_NAMESPACE, XXH128) -# define XXH3_128bits XXH_NAME2(XXH_NAMESPACE, XXH3_128bits) -# define XXH3_128bits_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_withSeed) -# define XXH3_128bits_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_withSecret) - -# define XXH3_128bits_reset XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_reset) -# define XXH3_128bits_reset_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_reset_withSeed) -# define XXH3_128bits_reset_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_reset_withSecret) -# define XXH3_128bits_update XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_update) -# define XXH3_128bits_digest XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_digest) - -# define XXH128_isEqual XXH_NAME2(XXH_NAMESPACE, XXH128_isEqual) -# define XXH128_cmp XXH_NAME2(XXH_NAMESPACE, XXH128_cmp) -# define XXH128_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH128_canonicalFromHash) -# define XXH128_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH128_hashFromCanonical) -#endif - -typedef struct { - XXH64_hash_t low64; - XXH64_hash_t high64; -} XXH128_hash_t; - -XXH_PUBLIC_API XXH128_hash_t XXH128(const void* data, size_t len, XXH64_hash_t seed); -XXH_PUBLIC_API XXH128_hash_t XXH3_128bits(const void* data, size_t len); -XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_withSeed(const void* data, size_t len, XXH64_hash_t seed); /* == XXH128() */ -XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_withSecret(const void* data, size_t len, const void* secret, size_t secretSize); - -XXH_PUBLIC_API XXH_errorcode XXH3_128bits_reset(XXH3_state_t* statePtr); -XXH_PUBLIC_API XXH_errorcode XXH3_128bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed); -XXH_PUBLIC_API XXH_errorcode XXH3_128bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize); - -XXH_PUBLIC_API XXH_errorcode XXH3_128bits_update (XXH3_state_t* statePtr, const void* input, size_t length); -XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_digest (const XXH3_state_t* statePtr); - - -/* Note : for better performance, following functions can be inlined, - * using XXH_INLINE_ALL */ - -/* return : 1 is equal, 0 if different */ -XXH_PUBLIC_API int XXH128_isEqual(XXH128_hash_t h1, XXH128_hash_t h2); - -/* This comparator is compatible with stdlib's qsort(). - * return : >0 if *h128_1 > *h128_2 - * <0 if *h128_1 < *h128_2 - * =0 if *h128_1 == *h128_2 */ -XXH_PUBLIC_API int XXH128_cmp(const void* h128_1, const void* h128_2); - - -/*====== Canonical representation ======*/ -typedef struct { unsigned char digest[16]; } XXH128_canonical_t; -XXH_PUBLIC_API void XXH128_canonicalFromHash(XXH128_canonical_t* dst, XXH128_hash_t hash); -XXH_PUBLIC_API XXH128_hash_t XXH128_hashFromCanonical(const XXH128_canonical_t* src); - - -#endif /* XXH_NO_LONG_LONG */ - - -/*-********************************************************************** -* XXH_INLINE_ALL -************************************************************************/ -#if defined(XXH_INLINE_ALL) || defined(XXH_PRIVATE_API) -# include "xxhash.c" /* include xxhash function bodies as `static`, for inlining */ -#endif - - - -#endif /* XXH_STATIC_LINKING_ONLY */ - - -#if defined (__cplusplus) -} -#endif - -#endif /* XXHASH_H_5627135585666179 */ diff --git a/source/thirdparty/src/xxhash.c b/source/thirdparty/src/xxhash.c deleted file mode 100644 index 3f49b7d1d..000000000 --- a/source/thirdparty/src/xxhash.c +++ /dev/null @@ -1,1110 +0,0 @@ -/* -* xxHash - Fast Hash algorithm -* Copyright (C) 2012-2016, Yann Collet -* -* BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php) -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions are -* met: -* -* * Redistributions of source code must retain the above copyright -* notice, this list of conditions and the following disclaimer. -* * Redistributions in binary form must reproduce the above -* copyright notice, this list of conditions and the following disclaimer -* in the documentation and/or other materials provided with the -* distribution. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -* -* You can contact the author at : -* - xxHash homepage: http://www.xxhash.com -* - xxHash source repository : https://github.com/Cyan4973/xxHash -*/ - - -/* since xxhash.c can be included (via XXH_INLINE_ALL), - * it's good practice to protect it with guard - * in case of multiples inclusions */ -#ifndef XXHASH_C_01393879 -#define XXHASH_C_01393879 - -/* ************************************* -* Tuning parameters -***************************************/ -/*!XXH_FORCE_MEMORY_ACCESS : - * By default, access to unaligned memory is controlled by `memcpy()`, which is safe and portable. - * Unfortunately, on some target/compiler combinations, the generated assembly is sub-optimal. - * The below switch allow to select different access method for improved performance. - * Method 0 (default) : use `memcpy()`. Safe and portable. - * Method 1 : `__packed` statement. It depends on compiler extension (ie, not portable). - * This method is safe if your compiler supports it, and *generally* as fast or faster than `memcpy`. - * Method 2 : direct access. This method doesn't depend on compiler but violate C standard. - * It can generate buggy code on targets which do not support unaligned memory accesses. - * But in some circumstances, it's the only known way to get the most performance (ie GCC + ARMv6) - * See http://stackoverflow.com/a/32095106/646947 for details. - * Prefer these methods in priority order (0 > 1 > 2) - */ -#ifndef XXH_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */ -# if !defined(__clang__) && defined(__GNUC__) && defined(__ARM_FEATURE_UNALIGNED) && defined(__ARM_ARCH) && (__ARM_ARCH == 6) -# define XXH_FORCE_MEMORY_ACCESS 2 -# elif !defined(__clang__) && ((defined(__INTEL_COMPILER) && !defined(_WIN32)) || \ - (defined(__GNUC__) && (defined(__ARM_ARCH) && __ARM_ARCH >= 7))) -# define XXH_FORCE_MEMORY_ACCESS 1 -# endif -#endif - -/*!XXH_ACCEPT_NULL_INPUT_POINTER : - * If input pointer is NULL, xxHash default behavior is to dereference it, triggering a segfault. - * When this macro is enabled, xxHash actively checks input for null pointer. - * It it is, result for null input pointers is the same as a null-length input. - */ -#ifndef XXH_ACCEPT_NULL_INPUT_POINTER /* can be defined externally */ -# define XXH_ACCEPT_NULL_INPUT_POINTER 0 -#endif - -/*!XXH_FORCE_ALIGN_CHECK : - * This is a minor performance trick, only useful with lots of very small keys. - * It means : check for aligned/unaligned input. - * The check costs one initial branch per hash; - * set it to 0 when the input is guaranteed to be aligned, - * or when alignment doesn't matter for performance. - */ -#ifndef XXH_FORCE_ALIGN_CHECK /* can be defined externally */ -# if defined(__i386) || defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64) -# define XXH_FORCE_ALIGN_CHECK 0 -# else -# define XXH_FORCE_ALIGN_CHECK 1 -# endif -#endif - -/*!XXH_REROLL: - * Whether to reroll XXH32_finalize, and XXH64_finalize, - * instead of using an unrolled jump table/if statement loop. - * - * This is automatically defined on -Os/-Oz on GCC and Clang. */ -#ifndef XXH_REROLL -# if defined(__OPTIMIZE_SIZE__) -# define XXH_REROLL 1 -# else -# define XXH_REROLL 0 -# endif -#endif - -/* ************************************* -* Includes & Memory related functions -***************************************/ -/*! Modify the local functions below should you wish to use some other memory routines -* for malloc(), free() */ -#include -static void* XXH_malloc(size_t s) { return malloc(s); } -static void XXH_free (void* p) { free(p); } -/*! and for memcpy() */ -#include -static void* XXH_memcpy(void* dest, const void* src, size_t size) { return memcpy(dest,src,size); } - -#include /* ULLONG_MAX */ - -#define XXH_STATIC_LINKING_ONLY -#include "xxhash.h" - - -/* ************************************* -* Compiler Specific Options -***************************************/ -#ifdef _MSC_VER /* Visual Studio */ -# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */ -# define XXH_FORCE_INLINE static __forceinline -# define XXH_NO_INLINE static __declspec(noinline) -#else -# if defined (__cplusplus) || defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */ -# ifdef __GNUC__ -# define XXH_FORCE_INLINE static inline __attribute__((always_inline)) -# define XXH_NO_INLINE static __attribute__((noinline)) -# else -# define XXH_FORCE_INLINE static inline -# define XXH_NO_INLINE static -# endif -# else -# define XXH_FORCE_INLINE static -# define XXH_NO_INLINE static -# endif /* __STDC_VERSION__ */ -#endif - - - -/* ************************************* -* Debug -***************************************/ -/* DEBUGLEVEL is expected to be defined externally, - * typically through compiler command line. - * Value must be a number. */ -#ifndef DEBUGLEVEL -# define DEBUGLEVEL 0 -#endif - -#if (DEBUGLEVEL>=1) -# include /* note : can still be disabled with NDEBUG */ -# define XXH_ASSERT(c) assert(c) -#else -# define XXH_ASSERT(c) ((void)0) -#endif - -/* note : use after variable declarations */ -#define XXH_STATIC_ASSERT(c) { enum { XXH_sa = 1/(int)(!!(c)) }; } - - -/* ************************************* -* Basic Types -***************************************/ -#if !defined (__VMS) \ - && (defined (__cplusplus) \ - || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) ) -# include - typedef uint8_t xxh_u8; -#else - typedef unsigned char xxh_u8; -#endif -typedef XXH32_hash_t xxh_u32; - - -/* === Memory access === */ - -#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==2)) - -/* Force direct memory access. Only works on CPU which support unaligned memory access in hardware */ -static xxh_u32 XXH_read32(const void* memPtr) { return *(const xxh_u32*) memPtr; } - -#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==1)) - -/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */ -/* currently only defined for gcc and icc */ -typedef union { xxh_u32 u32; } __attribute__((packed)) unalign; -static xxh_u32 XXH_read32(const void* ptr) { return ((const unalign*)ptr)->u32; } - -#else - -/* portable and safe solution. Generally efficient. - * see : http://stackoverflow.com/a/32095106/646947 - */ -static xxh_u32 XXH_read32(const void* memPtr) -{ - xxh_u32 val; - memcpy(&val, memPtr, sizeof(val)); - return val; -} - -#endif /* XXH_FORCE_DIRECT_MEMORY_ACCESS */ - - -/* === Endianess === */ -typedef enum { XXH_bigEndian=0, XXH_littleEndian=1 } XXH_endianess; - -/* XXH_CPU_LITTLE_ENDIAN can be defined externally, for example on the compiler command line */ -#ifndef XXH_CPU_LITTLE_ENDIAN -# if defined(_WIN32) /* Windows is always little endian */ \ - || defined(__LITTLE_ENDIAN__) \ - || (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) -# define XXH_CPU_LITTLE_ENDIAN 1 -# elif defined(__BIG_ENDIAN__) \ - || (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) -# define XXH_CPU_LITTLE_ENDIAN 0 -# else -static int XXH_isLittleEndian(void) -{ - const union { xxh_u32 u; xxh_u8 c[4]; } one = { 1 }; /* don't use static : performance detrimental */ - return one.c[0]; -} -# define XXH_CPU_LITTLE_ENDIAN XXH_isLittleEndian() -# endif -#endif - - - - -/* **************************************** -* Compiler-specific Functions and Macros -******************************************/ -#define XXH_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) - -#ifndef __has_builtin -# define __has_builtin(x) 0 -#endif - -#if !defined(NO_CLANG_BUILTIN) && __has_builtin(__builtin_rotateleft32) && __has_builtin(__builtin_rotateleft64) -# define XXH_rotl32 __builtin_rotateleft32 -# define XXH_rotl64 __builtin_rotateleft64 -/* Note : although _rotl exists for minGW (GCC under windows), performance seems poor */ -#elif defined(_MSC_VER) -# define XXH_rotl32(x,r) _rotl(x,r) -# define XXH_rotl64(x,r) _rotl64(x,r) -#else -# define XXH_rotl32(x,r) (((x) << (r)) | ((x) >> (32 - (r)))) -# define XXH_rotl64(x,r) (((x) << (r)) | ((x) >> (64 - (r)))) -#endif - -#if defined(_MSC_VER) /* Visual Studio */ -# define XXH_swap32 _byteswap_ulong -#elif XXH_GCC_VERSION >= 403 -# define XXH_swap32 __builtin_bswap32 -#else -static xxh_u32 XXH_swap32 (xxh_u32 x) -{ - return ((x << 24) & 0xff000000 ) | - ((x << 8) & 0x00ff0000 ) | - ((x >> 8) & 0x0000ff00 ) | - ((x >> 24) & 0x000000ff ); -} -#endif - - -/* *************************** -* Memory reads -*****************************/ -typedef enum { XXH_aligned, XXH_unaligned } XXH_alignment; - -XXH_FORCE_INLINE xxh_u32 XXH_readLE32(const void* ptr) -{ - return XXH_CPU_LITTLE_ENDIAN ? XXH_read32(ptr) : XXH_swap32(XXH_read32(ptr)); -} - -static xxh_u32 XXH_readBE32(const void* ptr) -{ - return XXH_CPU_LITTLE_ENDIAN ? XXH_swap32(XXH_read32(ptr)) : XXH_read32(ptr); -} - -XXH_FORCE_INLINE xxh_u32 -XXH_readLE32_align(const void* ptr, XXH_alignment align) -{ - if (align==XXH_unaligned) { - return XXH_readLE32(ptr); - } else { - return XXH_CPU_LITTLE_ENDIAN ? *(const xxh_u32*)ptr : XXH_swap32(*(const xxh_u32*)ptr); - } -} - - -/* ************************************* -* Misc -***************************************/ -XXH_PUBLIC_API unsigned XXH_versionNumber (void) { return XXH_VERSION_NUMBER; } - - -/* ******************************************************************* -* 32-bit hash functions -*********************************************************************/ -static const xxh_u32 PRIME32_1 = 0x9E3779B1U; /* 0b10011110001101110111100110110001 */ -static const xxh_u32 PRIME32_2 = 0x85EBCA77U; /* 0b10000101111010111100101001110111 */ -static const xxh_u32 PRIME32_3 = 0xC2B2AE3DU; /* 0b11000010101100101010111000111101 */ -static const xxh_u32 PRIME32_4 = 0x27D4EB2FU; /* 0b00100111110101001110101100101111 */ -static const xxh_u32 PRIME32_5 = 0x165667B1U; /* 0b00010110010101100110011110110001 */ - -static xxh_u32 XXH32_round(xxh_u32 acc, xxh_u32 input) -{ - acc += input * PRIME32_2; - acc = XXH_rotl32(acc, 13); - acc *= PRIME32_1; -#if defined(__GNUC__) && defined(__SSE4_1__) && !defined(XXH_ENABLE_AUTOVECTORIZE) - /* UGLY HACK: - * This inline assembly hack forces acc into a normal register. This is the - * only thing that prevents GCC and Clang from autovectorizing the XXH32 loop - * (pragmas and attributes don't work for some resason) without globally - * disabling SSE4.1. - * - * The reason we want to avoid vectorization is because despite working on - * 4 integers at a time, there are multiple factors slowing XXH32 down on - * SSE4: - * - There's a ridiculous amount of lag from pmulld (10 cycles of latency on newer chips!) - * making it slightly slower to multiply four integers at once compared to four - * integers independently. Even when pmulld was fastest, Sandy/Ivy Bridge, it is - * still not worth it to go into SSE just to multiply unless doing a long operation. - * - * - Four instructions are required to rotate, - * movqda tmp, v // not required with VEX encoding - * pslld tmp, 13 // tmp <<= 13 - * psrld v, 19 // x >>= 19 - * por v, tmp // x |= tmp - * compared to one for scalar: - * roll v, 13 // reliably fast across the board - * shldl v, v, 13 // Sandy Bridge and later prefer this for some reason - * - * - Instruction level parallelism is actually more beneficial here because the - * SIMD actually serializes this operation: While v1 is rotating, v2 can load data, - * while v3 can multiply. SSE forces them to operate together. - * - * How this hack works: - * __asm__("" // Declare an assembly block but don't declare any instructions - * : // However, as an Input/Output Operand, - * "+r" // constrain a read/write operand (+) as a general purpose register (r). - * (acc) // and set acc as the operand - * ); - * - * Because of the 'r', the compiler has promised that seed will be in a - * general purpose register and the '+' says that it will be 'read/write', - * so it has to assume it has changed. It is like volatile without all the - * loads and stores. - * - * Since the argument has to be in a normal register (not an SSE register), - * each time XXH32_round is called, it is impossible to vectorize. */ - __asm__("" : "+r" (acc)); -#endif - return acc; -} - -/* mix all bits */ -static xxh_u32 XXH32_avalanche(xxh_u32 h32) -{ - h32 ^= h32 >> 15; - h32 *= PRIME32_2; - h32 ^= h32 >> 13; - h32 *= PRIME32_3; - h32 ^= h32 >> 16; - return(h32); -} - -#define XXH_get32bits(p) XXH_readLE32_align(p, align) - -static xxh_u32 -XXH32_finalize(xxh_u32 h32, const xxh_u8* ptr, size_t len, XXH_alignment align) -{ -#define PROCESS1 \ - h32 += (*ptr++) * PRIME32_5; \ - h32 = XXH_rotl32(h32, 11) * PRIME32_1 ; - -#define PROCESS4 \ - h32 += XXH_get32bits(ptr) * PRIME32_3; \ - ptr+=4; \ - h32 = XXH_rotl32(h32, 17) * PRIME32_4 ; - - /* Compact rerolled version */ - if (XXH_REROLL) { - len &= 15; - while (len >= 4) { - PROCESS4; - len -= 4; - } - while (len > 0) { - PROCESS1; - --len; - } - return XXH32_avalanche(h32); - } else { - switch(len&15) /* or switch(bEnd - p) */ { - case 12: PROCESS4; - /* fallthrough */ - case 8: PROCESS4; - /* fallthrough */ - case 4: PROCESS4; - return XXH32_avalanche(h32); - - case 13: PROCESS4; - /* fallthrough */ - case 9: PROCESS4; - /* fallthrough */ - case 5: PROCESS4; - PROCESS1; - return XXH32_avalanche(h32); - - case 14: PROCESS4; - /* fallthrough */ - case 10: PROCESS4; - /* fallthrough */ - case 6: PROCESS4; - PROCESS1; - PROCESS1; - return XXH32_avalanche(h32); - - case 15: PROCESS4; - /* fallthrough */ - case 11: PROCESS4; - /* fallthrough */ - case 7: PROCESS4; - /* fallthrough */ - case 3: PROCESS1; - /* fallthrough */ - case 2: PROCESS1; - /* fallthrough */ - case 1: PROCESS1; - /* fallthrough */ - case 0: return XXH32_avalanche(h32); - } - XXH_ASSERT(0); - return h32; /* reaching this point is deemed impossible */ - } -} - -XXH_FORCE_INLINE xxh_u32 -XXH32_endian_align(const xxh_u8* input, size_t len, xxh_u32 seed, XXH_alignment align) -{ - const xxh_u8* bEnd = input + len; - xxh_u32 h32; - -#if defined(XXH_ACCEPT_NULL_INPUT_POINTER) && (XXH_ACCEPT_NULL_INPUT_POINTER>=1) - if (input==NULL) { - len=0; - bEnd=input=(const xxh_u8*)(size_t)16; - } -#endif - - if (len>=16) { - const xxh_u8* const limit = bEnd - 15; - xxh_u32 v1 = seed + PRIME32_1 + PRIME32_2; - xxh_u32 v2 = seed + PRIME32_2; - xxh_u32 v3 = seed + 0; - xxh_u32 v4 = seed - PRIME32_1; - - do { - v1 = XXH32_round(v1, XXH_get32bits(input)); input += 4; - v2 = XXH32_round(v2, XXH_get32bits(input)); input += 4; - v3 = XXH32_round(v3, XXH_get32bits(input)); input += 4; - v4 = XXH32_round(v4, XXH_get32bits(input)); input += 4; - } while (input < limit); - - h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7) - + XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18); - } else { - h32 = seed + PRIME32_5; - } - - h32 += (xxh_u32)len; - - return XXH32_finalize(h32, input, len&15, align); -} - - -XXH_PUBLIC_API XXH32_hash_t XXH32 (const void* input, size_t len, XXH32_hash_t seed) -{ -#if 0 - /* Simple version, good for code maintenance, but unfortunately slow for small inputs */ - XXH32_state_t state; - XXH32_reset(&state, seed); - XXH32_update(&state, (const xxh_u8*)input, len); - return XXH32_digest(&state); - -#else - - if (XXH_FORCE_ALIGN_CHECK) { - if ((((size_t)input) & 3) == 0) { /* Input is 4-bytes aligned, leverage the speed benefit */ - return XXH32_endian_align((const xxh_u8*)input, len, seed, XXH_aligned); - } } - - return XXH32_endian_align((const xxh_u8*)input, len, seed, XXH_unaligned); -#endif -} - - - -/*====== Hash streaming ======*/ - -XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void) -{ - return (XXH32_state_t*)XXH_malloc(sizeof(XXH32_state_t)); -} -XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr) -{ - XXH_free(statePtr); - return XXH_OK; -} - -XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* dstState, const XXH32_state_t* srcState) -{ - memcpy(dstState, srcState, sizeof(*dstState)); -} - -XXH_PUBLIC_API XXH_errorcode XXH32_reset(XXH32_state_t* statePtr, XXH32_hash_t seed) -{ - XXH32_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */ - memset(&state, 0, sizeof(state)); - state.v1 = seed + PRIME32_1 + PRIME32_2; - state.v2 = seed + PRIME32_2; - state.v3 = seed + 0; - state.v4 = seed - PRIME32_1; - /* do not write into reserved, planned to be removed in a future version */ - memcpy(statePtr, &state, sizeof(state) - sizeof(state.reserved)); - return XXH_OK; -} - - -XXH_PUBLIC_API XXH_errorcode -XXH32_update(XXH32_state_t* state, const void* input, size_t len) -{ - if (input==NULL) -#if defined(XXH_ACCEPT_NULL_INPUT_POINTER) && (XXH_ACCEPT_NULL_INPUT_POINTER>=1) - return XXH_OK; -#else - return XXH_ERROR; -#endif - - { const xxh_u8* p = (const xxh_u8*)input; - const xxh_u8* const bEnd = p + len; - - state->total_len_32 += (XXH32_hash_t)len; - state->large_len |= (XXH32_hash_t)((len>=16) | (state->total_len_32>=16)); - - if (state->memsize + len < 16) { /* fill in tmp buffer */ - XXH_memcpy((xxh_u8*)(state->mem32) + state->memsize, input, len); - state->memsize += (XXH32_hash_t)len; - return XXH_OK; - } - - if (state->memsize) { /* some data left from previous update */ - XXH_memcpy((xxh_u8*)(state->mem32) + state->memsize, input, 16-state->memsize); - { const xxh_u32* p32 = state->mem32; - state->v1 = XXH32_round(state->v1, XXH_readLE32(p32)); p32++; - state->v2 = XXH32_round(state->v2, XXH_readLE32(p32)); p32++; - state->v3 = XXH32_round(state->v3, XXH_readLE32(p32)); p32++; - state->v4 = XXH32_round(state->v4, XXH_readLE32(p32)); - } - p += 16-state->memsize; - state->memsize = 0; - } - - if (p <= bEnd-16) { - const xxh_u8* const limit = bEnd - 16; - xxh_u32 v1 = state->v1; - xxh_u32 v2 = state->v2; - xxh_u32 v3 = state->v3; - xxh_u32 v4 = state->v4; - - do { - v1 = XXH32_round(v1, XXH_readLE32(p)); p+=4; - v2 = XXH32_round(v2, XXH_readLE32(p)); p+=4; - v3 = XXH32_round(v3, XXH_readLE32(p)); p+=4; - v4 = XXH32_round(v4, XXH_readLE32(p)); p+=4; - } while (p<=limit); - - state->v1 = v1; - state->v2 = v2; - state->v3 = v3; - state->v4 = v4; - } - - if (p < bEnd) { - XXH_memcpy(state->mem32, p, (size_t)(bEnd-p)); - state->memsize = (unsigned)(bEnd-p); - } - } - - return XXH_OK; -} - - -XXH_PUBLIC_API XXH32_hash_t XXH32_digest (const XXH32_state_t* state) -{ - xxh_u32 h32; - - if (state->large_len) { - h32 = XXH_rotl32(state->v1, 1) - + XXH_rotl32(state->v2, 7) - + XXH_rotl32(state->v3, 12) - + XXH_rotl32(state->v4, 18); - } else { - h32 = state->v3 /* == seed */ + PRIME32_5; - } - - h32 += state->total_len_32; - - return XXH32_finalize(h32, (const xxh_u8*)state->mem32, state->memsize, XXH_aligned); -} - - -/*====== Canonical representation ======*/ - -/*! Default XXH result types are basic unsigned 32 and 64 bits. -* The canonical representation follows human-readable write convention, aka big-endian (large digits first). -* These functions allow transformation of hash result into and from its canonical format. -* This way, hash values can be written into a file or buffer, remaining comparable across different systems. -*/ - -XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash) -{ - XXH_STATIC_ASSERT(sizeof(XXH32_canonical_t) == sizeof(XXH32_hash_t)); - if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap32(hash); - memcpy(dst, &hash, sizeof(*dst)); -} - -XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src) -{ - return XXH_readBE32(src); -} - - -#ifndef XXH_NO_LONG_LONG - -/* ******************************************************************* -* 64-bit hash functions -*********************************************************************/ - -/*====== Memory access ======*/ - -typedef XXH64_hash_t xxh_u64; - - -/*! XXH_REROLL_XXH64: - * Whether to reroll the XXH64_finalize() loop. - * - * Just like XXH32, we can unroll the XXH64_finalize() loop. This can be a performance gain - * on 64-bit hosts, as only one jump is required. - * - * However, on 32-bit hosts, because arithmetic needs to be done with two 32-bit registers, - * and 64-bit arithmetic needs to be simulated, it isn't beneficial to unroll. The code becomes - * ridiculously large (the largest function in the binary on i386!), and rerolling it saves - * anywhere from 3kB to 20kB. It is also slightly faster because it fits into cache better - * and is more likely to be inlined by the compiler. - * - * If XXH_REROLL is defined, this is ignored and the loop is always rerolled. */ -#ifndef XXH_REROLL_XXH64 -# if (defined(__ILP32__) || defined(_ILP32)) /* ILP32 is often defined on 32-bit GCC family */ \ - || !(defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64) /* x86-64 */ \ - || defined(_M_ARM64) || defined(__aarch64__) || defined(__arm64__) /* aarch64 */ \ - || defined(__PPC64__) || defined(__PPC64LE__) || defined(__ppc64__) || defined(__powerpc64__) /* ppc64 */ \ - || defined(__mips64__) || defined(__mips64)) /* mips64 */ \ - || (!defined(SIZE_MAX) || SIZE_MAX < ULLONG_MAX) /* check limits */ -# define XXH_REROLL_XXH64 1 -# else -# define XXH_REROLL_XXH64 0 -# endif -#endif /* !defined(XXH_REROLL_XXH64) */ - -#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==2)) - -/* Force direct memory access. Only works on CPU which support unaligned memory access in hardware */ -static xxh_u64 XXH_read64(const void* memPtr) { return *(const xxh_u64*) memPtr; } - -#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==1)) - -/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */ -/* currently only defined for gcc and icc */ -typedef union { xxh_u32 u32; xxh_u64 u64; } __attribute__((packed)) unalign64; -static xxh_u64 XXH_read64(const void* ptr) { return ((const unalign64*)ptr)->u64; } - -#else - -/* portable and safe solution. Generally efficient. - * see : http://stackoverflow.com/a/32095106/646947 - */ - -static xxh_u64 XXH_read64(const void* memPtr) -{ - xxh_u64 val; - memcpy(&val, memPtr, sizeof(val)); - return val; -} - -#endif /* XXH_FORCE_DIRECT_MEMORY_ACCESS */ - -#if defined(_MSC_VER) /* Visual Studio */ -# define XXH_swap64 _byteswap_uint64 -#elif XXH_GCC_VERSION >= 403 -# define XXH_swap64 __builtin_bswap64 -#else -static xxh_u64 XXH_swap64 (xxh_u64 x) -{ - return ((x << 56) & 0xff00000000000000ULL) | - ((x << 40) & 0x00ff000000000000ULL) | - ((x << 24) & 0x0000ff0000000000ULL) | - ((x << 8) & 0x000000ff00000000ULL) | - ((x >> 8) & 0x00000000ff000000ULL) | - ((x >> 24) & 0x0000000000ff0000ULL) | - ((x >> 40) & 0x000000000000ff00ULL) | - ((x >> 56) & 0x00000000000000ffULL); -} -#endif - -XXH_FORCE_INLINE xxh_u64 XXH_readLE64(const void* ptr) -{ - return XXH_CPU_LITTLE_ENDIAN ? XXH_read64(ptr) : XXH_swap64(XXH_read64(ptr)); -} - -static xxh_u64 XXH_readBE64(const void* ptr) -{ - return XXH_CPU_LITTLE_ENDIAN ? XXH_swap64(XXH_read64(ptr)) : XXH_read64(ptr); -} - -XXH_FORCE_INLINE xxh_u64 -XXH_readLE64_align(const void* ptr, XXH_alignment align) -{ - if (align==XXH_unaligned) - return XXH_readLE64(ptr); - else - return XXH_CPU_LITTLE_ENDIAN ? *(const xxh_u64*)ptr : XXH_swap64(*(const xxh_u64*)ptr); -} - - -/*====== xxh64 ======*/ - -static const xxh_u64 PRIME64_1 = 0x9E3779B185EBCA87ULL; /* 0b1001111000110111011110011011000110000101111010111100101010000111 */ -static const xxh_u64 PRIME64_2 = 0xC2B2AE3D27D4EB4FULL; /* 0b1100001010110010101011100011110100100111110101001110101101001111 */ -static const xxh_u64 PRIME64_3 = 0x165667B19E3779F9ULL; /* 0b0001011001010110011001111011000110011110001101110111100111111001 */ -static const xxh_u64 PRIME64_4 = 0x85EBCA77C2B2AE63ULL; /* 0b1000010111101011110010100111011111000010101100101010111001100011 */ -static const xxh_u64 PRIME64_5 = 0x27D4EB2F165667C5ULL; /* 0b0010011111010100111010110010111100010110010101100110011111000101 */ - -static xxh_u64 XXH64_round(xxh_u64 acc, xxh_u64 input) -{ - acc += input * PRIME64_2; - acc = XXH_rotl64(acc, 31); - acc *= PRIME64_1; - return acc; -} - -static xxh_u64 XXH64_mergeRound(xxh_u64 acc, xxh_u64 val) -{ - val = XXH64_round(0, val); - acc ^= val; - acc = acc * PRIME64_1 + PRIME64_4; - return acc; -} - -static xxh_u64 XXH64_avalanche(xxh_u64 h64) -{ - h64 ^= h64 >> 33; - h64 *= PRIME64_2; - h64 ^= h64 >> 29; - h64 *= PRIME64_3; - h64 ^= h64 >> 32; - return h64; -} - - -#define XXH_get64bits(p) XXH_readLE64_align(p, align) - -static xxh_u64 -XXH64_finalize(xxh_u64 h64, const xxh_u8* ptr, size_t len, XXH_alignment align) -{ -#define PROCESS1_64 \ - h64 ^= (*ptr++) * PRIME64_5; \ - h64 = XXH_rotl64(h64, 11) * PRIME64_1; - -#define PROCESS4_64 \ - h64 ^= (xxh_u64)(XXH_get32bits(ptr)) * PRIME64_1; \ - ptr+=4; \ - h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3; - -#define PROCESS8_64 { \ - xxh_u64 const k1 = XXH64_round(0, XXH_get64bits(ptr)); \ - ptr+=8; \ - h64 ^= k1; \ - h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4; \ -} - - /* Rerolled version for 32-bit targets is faster and much smaller. */ - if (XXH_REROLL || XXH_REROLL_XXH64) { - len &= 31; - while (len >= 8) { - PROCESS8_64; - len -= 8; - } - if (len >= 4) { - PROCESS4_64; - len -= 4; - } - while (len > 0) { - PROCESS1_64; - --len; - } - return XXH64_avalanche(h64); - } else { - switch(len & 31) { - case 24: PROCESS8_64; - /* fallthrough */ - case 16: PROCESS8_64; - /* fallthrough */ - case 8: PROCESS8_64; - return XXH64_avalanche(h64); - - case 28: PROCESS8_64; - /* fallthrough */ - case 20: PROCESS8_64; - /* fallthrough */ - case 12: PROCESS8_64; - /* fallthrough */ - case 4: PROCESS4_64; - return XXH64_avalanche(h64); - - case 25: PROCESS8_64; - /* fallthrough */ - case 17: PROCESS8_64; - /* fallthrough */ - case 9: PROCESS8_64; - PROCESS1_64; - return XXH64_avalanche(h64); - - case 29: PROCESS8_64; - /* fallthrough */ - case 21: PROCESS8_64; - /* fallthrough */ - case 13: PROCESS8_64; - /* fallthrough */ - case 5: PROCESS4_64; - PROCESS1_64; - return XXH64_avalanche(h64); - - case 26: PROCESS8_64; - /* fallthrough */ - case 18: PROCESS8_64; - /* fallthrough */ - case 10: PROCESS8_64; - PROCESS1_64; - PROCESS1_64; - return XXH64_avalanche(h64); - - case 30: PROCESS8_64; - /* fallthrough */ - case 22: PROCESS8_64; - /* fallthrough */ - case 14: PROCESS8_64; - /* fallthrough */ - case 6: PROCESS4_64; - PROCESS1_64; - PROCESS1_64; - return XXH64_avalanche(h64); - - case 27: PROCESS8_64; - /* fallthrough */ - case 19: PROCESS8_64; - /* fallthrough */ - case 11: PROCESS8_64; - PROCESS1_64; - PROCESS1_64; - PROCESS1_64; - return XXH64_avalanche(h64); - - case 31: PROCESS8_64; - /* fallthrough */ - case 23: PROCESS8_64; - /* fallthrough */ - case 15: PROCESS8_64; - /* fallthrough */ - case 7: PROCESS4_64; - /* fallthrough */ - case 3: PROCESS1_64; - /* fallthrough */ - case 2: PROCESS1_64; - /* fallthrough */ - case 1: PROCESS1_64; - /* fallthrough */ - case 0: return XXH64_avalanche(h64); - } - } - /* impossible to reach */ - XXH_ASSERT(0); - return 0; /* unreachable, but some compilers complain without it */ -} - -XXH_FORCE_INLINE xxh_u64 -XXH64_endian_align(const xxh_u8* input, size_t len, xxh_u64 seed, XXH_alignment align) -{ - const xxh_u8* bEnd = input + len; - xxh_u64 h64; - -#if defined(XXH_ACCEPT_NULL_INPUT_POINTER) && (XXH_ACCEPT_NULL_INPUT_POINTER>=1) - if (input==NULL) { - len=0; - bEnd=input=(const xxh_u8*)(size_t)32; - } -#endif - - if (len>=32) { - const xxh_u8* const limit = bEnd - 32; - xxh_u64 v1 = seed + PRIME64_1 + PRIME64_2; - xxh_u64 v2 = seed + PRIME64_2; - xxh_u64 v3 = seed + 0; - xxh_u64 v4 = seed - PRIME64_1; - - do { - v1 = XXH64_round(v1, XXH_get64bits(input)); input+=8; - v2 = XXH64_round(v2, XXH_get64bits(input)); input+=8; - v3 = XXH64_round(v3, XXH_get64bits(input)); input+=8; - v4 = XXH64_round(v4, XXH_get64bits(input)); input+=8; - } while (input<=limit); - - h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18); - h64 = XXH64_mergeRound(h64, v1); - h64 = XXH64_mergeRound(h64, v2); - h64 = XXH64_mergeRound(h64, v3); - h64 = XXH64_mergeRound(h64, v4); - - } else { - h64 = seed + PRIME64_5; - } - - h64 += (xxh_u64) len; - - return XXH64_finalize(h64, input, len, align); -} - - -XXH_PUBLIC_API XXH64_hash_t XXH64 (const void* input, size_t len, XXH64_hash_t seed) -{ -#if 0 - /* Simple version, good for code maintenance, but unfortunately slow for small inputs */ - XXH64_state_t state; - XXH64_reset(&state, seed); - XXH64_update(&state, (const xxh_u8*)input, len); - return XXH64_digest(&state); - -#else - - if (XXH_FORCE_ALIGN_CHECK) { - if ((((size_t)input) & 7)==0) { /* Input is aligned, let's leverage the speed advantage */ - return XXH64_endian_align((const xxh_u8*)input, len, seed, XXH_aligned); - } } - - return XXH64_endian_align((const xxh_u8*)input, len, seed, XXH_unaligned); - -#endif -} - -/*====== Hash Streaming ======*/ - -XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void) -{ - return (XXH64_state_t*)XXH_malloc(sizeof(XXH64_state_t)); -} -XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr) -{ - XXH_free(statePtr); - return XXH_OK; -} - -XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* dstState, const XXH64_state_t* srcState) -{ - memcpy(dstState, srcState, sizeof(*dstState)); -} - -XXH_PUBLIC_API XXH_errorcode XXH64_reset(XXH64_state_t* statePtr, XXH64_hash_t seed) -{ - XXH64_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */ - memset(&state, 0, sizeof(state)); - state.v1 = seed + PRIME64_1 + PRIME64_2; - state.v2 = seed + PRIME64_2; - state.v3 = seed + 0; - state.v4 = seed - PRIME64_1; - /* do not write into reserved64, might be removed in a future version */ - memcpy(statePtr, &state, sizeof(state) - sizeof(state.reserved64)); - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode -XXH64_update (XXH64_state_t* state, const void* input, size_t len) -{ - if (input==NULL) -#if defined(XXH_ACCEPT_NULL_INPUT_POINTER) && (XXH_ACCEPT_NULL_INPUT_POINTER>=1) - return XXH_OK; -#else - return XXH_ERROR; -#endif - - { const xxh_u8* p = (const xxh_u8*)input; - const xxh_u8* const bEnd = p + len; - - state->total_len += len; - - if (state->memsize + len < 32) { /* fill in tmp buffer */ - XXH_memcpy(((xxh_u8*)state->mem64) + state->memsize, input, len); - state->memsize += (xxh_u32)len; - return XXH_OK; - } - - if (state->memsize) { /* tmp buffer is full */ - XXH_memcpy(((xxh_u8*)state->mem64) + state->memsize, input, 32-state->memsize); - state->v1 = XXH64_round(state->v1, XXH_readLE64(state->mem64+0)); - state->v2 = XXH64_round(state->v2, XXH_readLE64(state->mem64+1)); - state->v3 = XXH64_round(state->v3, XXH_readLE64(state->mem64+2)); - state->v4 = XXH64_round(state->v4, XXH_readLE64(state->mem64+3)); - p += 32-state->memsize; - state->memsize = 0; - } - - if (p+32 <= bEnd) { - const xxh_u8* const limit = bEnd - 32; - xxh_u64 v1 = state->v1; - xxh_u64 v2 = state->v2; - xxh_u64 v3 = state->v3; - xxh_u64 v4 = state->v4; - - do { - v1 = XXH64_round(v1, XXH_readLE64(p)); p+=8; - v2 = XXH64_round(v2, XXH_readLE64(p)); p+=8; - v3 = XXH64_round(v3, XXH_readLE64(p)); p+=8; - v4 = XXH64_round(v4, XXH_readLE64(p)); p+=8; - } while (p<=limit); - - state->v1 = v1; - state->v2 = v2; - state->v3 = v3; - state->v4 = v4; - } - - if (p < bEnd) { - XXH_memcpy(state->mem64, p, (size_t)(bEnd-p)); - state->memsize = (unsigned)(bEnd-p); - } - } - - return XXH_OK; -} - - -XXH_PUBLIC_API XXH64_hash_t XXH64_digest (const XXH64_state_t* state) -{ - xxh_u64 h64; - - if (state->total_len >= 32) { - xxh_u64 const v1 = state->v1; - xxh_u64 const v2 = state->v2; - xxh_u64 const v3 = state->v3; - xxh_u64 const v4 = state->v4; - - h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18); - h64 = XXH64_mergeRound(h64, v1); - h64 = XXH64_mergeRound(h64, v2); - h64 = XXH64_mergeRound(h64, v3); - h64 = XXH64_mergeRound(h64, v4); - } else { - h64 = state->v3 /*seed*/ + PRIME64_5; - } - - h64 += (xxh_u64) state->total_len; - - return XXH64_finalize(h64, (const xxh_u8*)state->mem64, (size_t)state->total_len, XXH_aligned); -} - - -/*====== Canonical representation ======*/ - -XXH_PUBLIC_API void XXH64_canonicalFromHash(XXH64_canonical_t* dst, XXH64_hash_t hash) -{ - XXH_STATIC_ASSERT(sizeof(XXH64_canonical_t) == sizeof(XXH64_hash_t)); - if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap64(hash); - memcpy(dst, &hash, sizeof(*dst)); -} - -XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src) -{ - return XXH_readBE64(src); -} - - - -/* ********************************************************************* -* XXH3 -* New generation hash designed for speed on small keys and vectorization -************************************************************************ */ - -#include "xxh3.h" - - -#endif /* XXH_NO_LONG_LONG */ - -#endif /* XXHASH_C_01393879 */