X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;ds=inline;f=silo%2Fthird-party%2Flz4%2Fxxhash.c;fp=silo%2Fthird-party%2Flz4%2Fxxhash.c;h=6dacdcbc87b834f348c653a0710db50fb7473edb;hb=19b84c667216ff74f1b747e18b5542444dc54716;hp=0000000000000000000000000000000000000000;hpb=72045f68e6d1ad46133bdc507b409b676ce64957;p=c11concurrency-benchmarks.git diff --git a/silo/third-party/lz4/xxhash.c b/silo/third-party/lz4/xxhash.c new file mode 100644 index 0000000..6dacdcb --- /dev/null +++ b/silo/third-party/lz4/xxhash.c @@ -0,0 +1,477 @@ +/* +xxHash - Fast Hash algorithm +Copyright (C) 2012-2013, 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 : http://code.google.com/p/xxhash/ +*/ + + + +//************************************** +// Tuning parameters +//************************************** +// Unaligned memory access is automatically enabled for "common" CPU, such as x86. +// For others CPU, the compiler will be more cautious, and insert extra code to ensure aligned access is respected. +// If you know your target CPU supports unaligned memory access, you want to force this option manually to improve performance. +// You can also enable this parameter if you know your input data will always be aligned (boundaries of 4, for U32). +#if defined(__ARM_FEATURE_UNALIGNED) || defined(__i386) || defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64) +# define XXH_USE_UNALIGNED_ACCESS 1 +#endif + +// XXH_ACCEPT_NULL_INPUT_POINTER : +// If the input pointer is a null pointer, xxHash default behavior is to crash, since it is a bad input. +// If this option is enabled, xxHash output for null input pointers will be the same as a null-length input. +// This option has a very small performance cost (only measurable on small inputs). +// By default, this option is disabled. To enable it, uncomment below define : +//#define XXH_ACCEPT_NULL_INPUT_POINTER 1 + +// XXH_FORCE_NATIVE_FORMAT : +// By default, xxHash library provides endian-independant Hash values, based on little-endian convention. +// Results are therefore identical for little-endian and big-endian CPU. +// This comes at a performance cost for big-endian CPU, since some swapping is required to emulate little-endian format. +// Should endian-independance be of no importance for your application, you may uncomment the #define below. +// It will improve speed for Big-endian CPU. +// This option has no impact on Little_Endian CPU. +//#define XXH_FORCE_NATIVE_FORMAT 1 + + +//************************************** +// Compiler Options +//************************************** +#if defined(_MSC_VER) && !defined(__cplusplus) // Visual Studio +# define inline __inline // Visual C is not C99, but supports some kind of inline +#endif + + +//************************************** +// Includes & Memory related functions +//************************************** +#include "xxhash.h" +// Modify the local functions below should you wish to use some other memory related routines +// for malloc(), free() +#include +static inline void* XXH_malloc(size_t s) { return malloc(s); } +static inline void XXH_free (void* p) { free(p); } +// for memcpy() +#include +static inline void* XXH_memcpy(void* dest, const void* src, size_t size) { return memcpy(dest,src,size); } + + +//************************************** +// CPU Feature Detection +//************************************** +// Little Endian or Big Endian ? +// You can overwrite the #define below if you know your architecture endianess +#if defined(XXH_FORCE_NATIVE_FORMAT) && (XXH_FORCE_NATIVE_FORMAT==1) +// Force native format. The result will be endian dependant. +# define XXH_BIG_ENDIAN 0 +#elif defined (__GLIBC__) +# include +# if (__BYTE_ORDER == __BIG_ENDIAN) +# define XXH_BIG_ENDIAN 1 +# endif +#elif (defined(__BIG_ENDIAN__) || defined(__BIG_ENDIAN) || defined(_BIG_ENDIAN)) && !(defined(__LITTLE_ENDIAN__) || defined(__LITTLE_ENDIAN) || defined(_LITTLE_ENDIAN)) +# define XXH_BIG_ENDIAN 1 +#elif defined(__sparc) || defined(__sparc__) \ + || defined(__powerpc__) || defined(__ppc__) || defined(__PPC__) \ + || defined(__hpux) || defined(__hppa) \ + || defined(_MIPSEB) || defined(__s390__) +# define XXH_BIG_ENDIAN 1 +#endif + +#if !defined(XXH_BIG_ENDIAN) +// Little Endian assumed. PDP Endian and other very rare endian format are unsupported. +# define XXH_BIG_ENDIAN 0 +#endif + + +//************************************** +// Basic Types +//************************************** +#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L // C99 +# include + typedef uint8_t BYTE; + typedef uint16_t U16; + typedef uint32_t U32; + typedef int32_t S32; + typedef uint64_t U64; +#else + typedef unsigned char BYTE; + typedef unsigned short U16; + typedef unsigned int U32; + typedef signed int S32; + typedef unsigned long long U64; +#endif + +#if defined(__GNUC__) && !defined(XXH_USE_UNALIGNED_ACCESS) +# define _PACKED __attribute__ ((packed)) +#else +# define _PACKED +#endif + +#if !defined(XXH_USE_UNALIGNED_ACCESS) && !defined(__GNUC__) +# pragma pack(push, 1) +#endif + +typedef struct _U32_S { U32 v; } _PACKED U32_S; + +#if !defined(XXH_USE_UNALIGNED_ACCESS) && !defined(__GNUC__) +# pragma pack(pop) +#endif + +#define A32(x) (((U32_S *)(x))->v) + + +//*************************************** +// Compiler-specific Functions and Macros +//*************************************** +#define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) + +// Note : although _rotl exists for minGW (GCC under windows), performance seems poor +#if defined(_MSC_VER) +# define XXH_rotl32(x,r) _rotl(x,r) +#else +# define XXH_rotl32(x,r) ((x << r) | (x >> (32 - r))) +#endif + +#if defined(_MSC_VER) // Visual Studio +# define XXH_swap32 _byteswap_ulong +#elif GCC_VERSION >= 403 +# define XXH_swap32 __builtin_bswap32 +#else +static inline U32 XXH_swap32 (U32 x) { + return ((x << 24) & 0xff000000 ) | + ((x << 8) & 0x00ff0000 ) | + ((x >> 8) & 0x0000ff00 ) | + ((x >> 24) & 0x000000ff );} +#endif + + +//************************************** +// Constants +//************************************** +#define PRIME32_1 2654435761U +#define PRIME32_2 2246822519U +#define PRIME32_3 3266489917U +#define PRIME32_4 668265263U +#define PRIME32_5 374761393U + + +//************************************** +// Macros +//************************************** +#define XXH_STATIC_ASSERT(c) { enum { XXH_static_assert = 1/(!!(c)) }; } // use only *after* variable declarations +#define XXH_LE32(p) (XXH_BIG_ENDIAN ? XXH_swap32(A32(p)) : A32(p)) +#define XXH_alignedLE32(p) (XXH_BIG_ENDIAN ? XXH_swap32(*(U32*)(p)) : *(U32*)(p)) + + + +//**************************** +// Simple Hash Functions +//**************************** + +#if !defined(XXH_USE_UNALIGNED_ACCESS) +// Specific version, for aligned 32-bits input. Useless for CPU supporting unaligned access. +static U32 XXH32_alignedInput(const void* input, int len, U32 seed) +{ + const BYTE* p = (const BYTE*)input; + const BYTE* const bEnd = p + len; + U32 h32; + + if (len>=16) + { + const BYTE* const limit = bEnd - 16; + U32 v1 = seed + PRIME32_1 + PRIME32_2; + U32 v2 = seed + PRIME32_2; + U32 v3 = seed + 0; + U32 v4 = seed - PRIME32_1; + do + { + v1 += XXH_alignedLE32(p) * PRIME32_2; v1 = XXH_rotl32(v1, 13); v1 *= PRIME32_1; p+=4; + v2 += XXH_alignedLE32(p) * PRIME32_2; v2 = XXH_rotl32(v2, 13); v2 *= PRIME32_1; p+=4; + v3 += XXH_alignedLE32(p) * PRIME32_2; v3 = XXH_rotl32(v3, 13); v3 *= PRIME32_1; p+=4; + v4 += XXH_alignedLE32(p) * PRIME32_2; v4 = XXH_rotl32(v4, 13); v4 *= PRIME32_1; p+=4; + } while (p<=limit); + h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7) + XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18); + } + else { h32 = seed + PRIME32_5; } + h32 += (U32) len; + while (p<=bEnd-4) + { + h32 += XXH_alignedLE32(p) * PRIME32_3; + h32 = XXH_rotl32(h32, 17) * PRIME32_4 ; + p+=4; + } + while (p> 15; + h32 *= PRIME32_2; + h32 ^= h32 >> 13; + h32 *= PRIME32_3; + h32 ^= h32 >> 16; + return h32; +} +#endif + +U32 XXH32(const void* input, int len, U32 seed) +{ +#if 0 + // Simple version, good for code maintenance, but unfortunately slow for small inputs + void* state = XXH32_init(seed); + XXH32_update(state, input, len); + return XXH32_digest(state); +#else + + const BYTE* p = (const BYTE*)input; + const BYTE* const bEnd = p + len; + U32 h32; + +#ifdef XXH_ACCEPT_NULL_INPUT_POINTER + if (p==NULL) { len=0; p=(const BYTE*)16; } +#endif + +#if !defined(XXH_USE_UNALIGNED_ACCESS) + if ((((U32)p) & 3) == 0) return XXH32_alignedInput(input, len, seed); // Input is aligned, let's leverage the speed advantage +#endif + + if (len>=16) + { + const BYTE* const limit = bEnd - 16; + U32 v1 = seed + PRIME32_1 + PRIME32_2; + U32 v2 = seed + PRIME32_2; + U32 v3 = seed + 0; + U32 v4 = seed - PRIME32_1; + + do + { + v1 += XXH_LE32(p) * PRIME32_2; v1 = XXH_rotl32(v1, 13); v1 *= PRIME32_1; p+=4; + v2 += XXH_LE32(p) * PRIME32_2; v2 = XXH_rotl32(v2, 13); v2 *= PRIME32_1; p+=4; + v3 += XXH_LE32(p) * PRIME32_2; v3 = XXH_rotl32(v3, 13); v3 *= PRIME32_1; p+=4; + v4 += XXH_LE32(p) * PRIME32_2; v4 = XXH_rotl32(v4, 13); v4 *= PRIME32_1; p+=4; + } while (p<=limit); + + h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7) + XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18); + } + else + { + h32 = seed + PRIME32_5; + } + + h32 += (U32) len; + + while (p<=bEnd-4) + { + h32 += XXH_LE32(p) * PRIME32_3; + h32 = XXH_rotl32(h32, 17) * PRIME32_4 ; + p+=4; + } + + while (p> 15; + h32 *= PRIME32_2; + h32 ^= h32 >> 13; + h32 *= PRIME32_3; + h32 ^= h32 >> 16; + + return h32; + +#endif +} + + +//**************************** +// Advanced Hash Functions +//**************************** + +struct XXH_state32_t +{ + U64 total_len; + U32 seed; + U32 v1; + U32 v2; + U32 v3; + U32 v4; + int memsize; + char memory[16]; +}; + + +int XXH32_sizeofState() +{ + XXH_STATIC_ASSERT(XXH32_SIZEOFSTATE >= sizeof(struct XXH_state32_t)); // A compilation error here means XXH32_SIZEOFSTATE is not large enough + return sizeof(struct XXH_state32_t); +} + + +XXH_errorcode XXH32_resetState(void* state_in, U32 seed) +{ + struct XXH_state32_t * state = (struct XXH_state32_t *) state_in; + state->seed = seed; + state->v1 = seed + PRIME32_1 + PRIME32_2; + state->v2 = seed + PRIME32_2; + state->v3 = seed + 0; + state->v4 = seed - PRIME32_1; + state->total_len = 0; + state->memsize = 0; + return XXH_OK; +} + + +void* XXH32_init (U32 seed) +{ + void* state = XXH_malloc (sizeof(struct XXH_state32_t)); + XXH32_resetState(state, seed); + return state; +} + + +XXH_errorcode XXH32_update (void* state_in, const void* input, int len) +{ + struct XXH_state32_t * state = (struct XXH_state32_t *) state_in; + const BYTE* p = (const BYTE*)input; + const BYTE* const bEnd = p + len; + +#ifdef XXH_ACCEPT_NULL_INPUT_POINTER + if (input==NULL) return XXH_ERROR; +#endif + + state->total_len += len; + + if (state->memsize + len < 16) // fill in tmp buffer + { + XXH_memcpy(state->memory + state->memsize, input, len); + state->memsize += len; + return XXH_OK; + } + + if (state->memsize) // some data left from previous update + { + XXH_memcpy(state->memory + state->memsize, input, 16-state->memsize); + { + const U32* p32 = (const U32*)state->memory; + state->v1 += XXH_LE32(p32) * PRIME32_2; state->v1 = XXH_rotl32(state->v1, 13); state->v1 *= PRIME32_1; p32++; + state->v2 += XXH_LE32(p32) * PRIME32_2; state->v2 = XXH_rotl32(state->v2, 13); state->v2 *= PRIME32_1; p32++; + state->v3 += XXH_LE32(p32) * PRIME32_2; state->v3 = XXH_rotl32(state->v3, 13); state->v3 *= PRIME32_1; p32++; + state->v4 += XXH_LE32(p32) * PRIME32_2; state->v4 = XXH_rotl32(state->v4, 13); state->v4 *= PRIME32_1; p32++; + } + p += 16-state->memsize; + state->memsize = 0; + } + + if (p <= bEnd-16) + { + const BYTE* const limit = bEnd - 16; + U32 v1 = state->v1; + U32 v2 = state->v2; + U32 v3 = state->v3; + U32 v4 = state->v4; + + do + { + v1 += XXH_LE32(p) * PRIME32_2; v1 = XXH_rotl32(v1, 13); v1 *= PRIME32_1; p+=4; + v2 += XXH_LE32(p) * PRIME32_2; v2 = XXH_rotl32(v2, 13); v2 *= PRIME32_1; p+=4; + v3 += XXH_LE32(p) * PRIME32_2; v3 = XXH_rotl32(v3, 13); v3 *= PRIME32_1; p+=4; + v4 += XXH_LE32(p) * PRIME32_2; v4 = XXH_rotl32(v4, 13); v4 *= PRIME32_1; p+=4; + } while (p<=limit); + + state->v1 = v1; + state->v2 = v2; + state->v3 = v3; + state->v4 = v4; + } + + if (p < bEnd) + { + XXH_memcpy(state->memory, p, bEnd-p); + state->memsize = (int)(bEnd-p); + } + + return XXH_OK; +} + + +U32 XXH32_intermediateDigest (void* state_in) +{ + struct XXH_state32_t * state = (struct XXH_state32_t *) state_in; + BYTE * p = (BYTE*)state->memory; + BYTE* bEnd = (BYTE*)state->memory + state->memsize; + U32 h32; + + if (state->total_len >= 16) + { + h32 = XXH_rotl32(state->v1, 1) + XXH_rotl32(state->v2, 7) + XXH_rotl32(state->v3, 12) + XXH_rotl32(state->v4, 18); + } + else + { + h32 = state->seed + PRIME32_5; + } + + h32 += (U32) state->total_len; + + while (p<=bEnd-4) + { + h32 += XXH_LE32(p) * PRIME32_3; + h32 = XXH_rotl32(h32, 17) * PRIME32_4; + p+=4; + } + + while (p> 15; + h32 *= PRIME32_2; + h32 ^= h32 >> 13; + h32 *= PRIME32_3; + h32 ^= h32 >> 16; + + return h32; +} + + +U32 XXH32_digest (void* state_in) +{ + U32 h32 = XXH32_intermediateDigest(state_in); + + XXH_free(state_in); + + return h32; +}