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4 Commits
a4f96a435a
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add-xxhash
| Author | SHA1 | Date | |
|---|---|---|---|
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eea4e75759 | ||
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301296dcd5 | ||
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3c3afa3c51 | ||
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38dc265806 |
@@ -31,7 +31,6 @@ target_sources (xrpl_core PRIVATE
|
||||
src/ripple/beast/clock/basic_seconds_clock.cpp
|
||||
src/ripple/beast/core/CurrentThreadName.cpp
|
||||
src/ripple/beast/core/SemanticVersion.cpp
|
||||
src/ripple/beast/hash/impl/xxhash.cpp
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||||
src/ripple/beast/insight/impl/Collector.cpp
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||||
src/ripple/beast/insight/impl/Groups.cpp
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src/ripple/beast/insight/impl/Hook.cpp
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||||
@@ -149,7 +148,8 @@ target_link_libraries (xrpl_core
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NIH::secp256k1
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NIH::ed25519-donna
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date::date
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||||
Ripple::opts)
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||||
Ripple::opts
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NIH::xxhash)
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||||
#[=================================[
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||||
main/core headers installation
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#]=================================]
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@@ -283,9 +283,6 @@ install (
|
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src/ripple/beast/hash/uhash.h
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src/ripple/beast/hash/xxhasher.h
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||||
DESTINATION include/ripple/beast/hash)
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install (
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||||
FILES src/ripple/beast/hash/impl/xxhash.h
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||||
DESTINATION include/ripple/beast/hash/impl)
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||||
install (
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FILES
|
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src/ripple/beast/rfc2616.h
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||||
|
||||
51
Builds/CMake/deps/xxHash.cmake
Normal file
51
Builds/CMake/deps/xxHash.cmake
Normal file
@@ -0,0 +1,51 @@
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||||
#[===================================================================[
|
||||
NIH dep: xxhash:
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||||
#]===================================================================]
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||||
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||||
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||||
# find_package(xxHash 0.8.2 CONFIG REQUIRED)
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# target_link_libraries(ripple_libs INTERFACE xxHash::xxhash)
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# add_library(NIH::xxhash ALIAS xxHash::xxhash)
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||||
|
||||
include(FetchContent)
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||||
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||||
ExternalProject_Add(
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||||
xxhash_src
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||||
PREFIX ${nih_cache_path}
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GIT_REPOSITORY https://github.com/Cyan4973/xxHash.git
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GIT_TAG v0.8.2
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SOURCE_SUBDIR cmake_unofficial
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||||
CMAKE_ARGS
|
||||
-DBUILD_SHARED_LIBS=OFF
|
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-DXXHASH_BUILD_XXHSUM=ON
|
||||
LOG_BUILD ON
|
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LOG_CONFIGURE ON
|
||||
BUILD_COMMAND
|
||||
${CMAKE_COMMAND}
|
||||
--build .
|
||||
--config $<CONFIG>
|
||||
$<$<VERSION_GREATER_EQUAL:${CMAKE_VERSION},3.12>:--parallel ${ep_procs}>
|
||||
INSTALL_COMMAND ""
|
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BUILD_BYPRODUCTS
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<BINARY_DIR>/libxxhash.a
|
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<BINARY_DIR>/xxhsum
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)
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add_library(xxHash::xxhash STATIC IMPORTED GLOBAL)
|
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|
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ExternalProject_Get_Property (xxhash_src BINARY_DIR)
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ExternalProject_Get_Property (xxhash_src SOURCE_DIR)
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set (xxhash_src_SOURCE_DIR "${SOURCE_DIR}")
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set (xxhash_src_BINARY_DIR "${BINARY_DIR}")
|
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|
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add_dependencies(xxHash::xxhash xxhash_src)
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set_target_properties (xxHash::xxhash PROPERTIES
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IMPORTED_LOCATION_DEBUG
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"${xxhash_src_BINARY_DIR}/libxxhash.a"
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IMPORTED_LOCATION_RELEASE
|
||||
"${xxhash_src_BINARY_DIR}/libxxhash.a"
|
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INTERFACE_INCLUDE_DIRECTORIES
|
||||
"${xxhash_src_SOURCE_DIR}"
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)
|
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|
||||
target_link_libraries(ripple_libs INTERFACE xxHash::xxhash)
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add_library(NIH::xxhash ALIAS xxHash::xxhash)
|
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@@ -75,6 +75,7 @@ include(deps/gRPC)
|
||||
include(deps/cassandra)
|
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include(deps/Postgres)
|
||||
include(deps/WasmEdge)
|
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include(deps/xxHash)
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||||
|
||||
###
|
||||
|
||||
|
||||
@@ -1,996 +0,0 @@
|
||||
/*
|
||||
xxHash - Fast Hash algorithm
|
||||
Copyright (C) 2012-2014, 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/
|
||||
- public discussion board : https://groups.google.com/forum/#!forum/lz4c
|
||||
*/
|
||||
|
||||
#include <ripple/beast/hash/impl/xxhash.h>
|
||||
|
||||
//**************************************
|
||||
// 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 trigger
|
||||
// a memory access error, since it is a bad pointer. When 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 set the
|
||||
// #define below to 1. It will improve speed for Big-endian CPU. This option has
|
||||
// no impact on Little_Endian CPU.
|
||||
#define XXH_FORCE_NATIVE_FORMAT 0
|
||||
|
||||
//**************************************
|
||||
// Compiler Specific Options
|
||||
//**************************************
|
||||
// Disable some Visual warning messages
|
||||
#ifdef _MSC_VER // Visual Studio
|
||||
#pragma warning( \
|
||||
disable : 4127) // disable: C4127: conditional expression is constant
|
||||
#endif
|
||||
|
||||
#ifdef _MSC_VER // Visual Studio
|
||||
#define FORCE_INLINE static __forceinline
|
||||
#else
|
||||
#ifdef __GNUC__
|
||||
#define FORCE_INLINE static inline __attribute__((always_inline))
|
||||
#else
|
||||
#define FORCE_INLINE static inline
|
||||
#endif
|
||||
#endif
|
||||
|
||||
//**************************************
|
||||
// Includes & Memory related functions
|
||||
//**************************************
|
||||
//#include "xxhash.h"
|
||||
// Modify the local functions below should you wish to use some other memory
|
||||
// routines for malloc(), free()
|
||||
#include <stdlib.h>
|
||||
static void*
|
||||
XXH_malloc(size_t s)
|
||||
{
|
||||
return malloc(s);
|
||||
}
|
||||
static void
|
||||
XXH_free(void* p)
|
||||
{
|
||||
free(p);
|
||||
}
|
||||
// for memcpy()
|
||||
#include <string.h>
|
||||
static void*
|
||||
XXH_memcpy(void* dest, const void* src, size_t size)
|
||||
{
|
||||
return memcpy(dest, src, size);
|
||||
}
|
||||
|
||||
//**************************************
|
||||
// Basic Types
|
||||
//**************************************
|
||||
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L // C99
|
||||
#include <stdint.h>
|
||||
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__)
|
||||
#ifdef __IBMC__
|
||||
#pragma pack(1)
|
||||
#else
|
||||
#pragma pack(push, 1)
|
||||
#endif
|
||||
#endif
|
||||
|
||||
namespace beast {
|
||||
namespace detail {
|
||||
|
||||
typedef struct _U32_S
|
||||
{
|
||||
U32 v;
|
||||
} _PACKED U32_S;
|
||||
typedef struct _U64_S
|
||||
{
|
||||
U64 v;
|
||||
} _PACKED U64_S;
|
||||
|
||||
#if !defined(XXH_USE_UNALIGNED_ACCESS) && !defined(__GNUC__)
|
||||
#pragma pack(pop)
|
||||
#endif
|
||||
|
||||
#define A32(x) (((U32_S*)(x))->v)
|
||||
#define A64(x) (((U64_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)
|
||||
#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
|
||||
#define XXH_swap64 _byteswap_uint64
|
||||
#elif GCC_VERSION >= 403
|
||||
#define XXH_swap32 __builtin_bswap32
|
||||
#define XXH_swap64 __builtin_bswap64
|
||||
#else
|
||||
static inline U32
|
||||
XXH_swap32(U32 x)
|
||||
{
|
||||
return ((x << 24) & 0xff000000) | ((x << 8) & 0x00ff0000) |
|
||||
((x >> 8) & 0x0000ff00) | ((x >> 24) & 0x000000ff);
|
||||
}
|
||||
static inline U64
|
||||
XXH_swap64(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
|
||||
|
||||
//**************************************
|
||||
// Constants
|
||||
//**************************************
|
||||
#define PRIME32_1 2654435761U
|
||||
#define PRIME32_2 2246822519U
|
||||
#define PRIME32_3 3266489917U
|
||||
#define PRIME32_4 668265263U
|
||||
#define PRIME32_5 374761393U
|
||||
|
||||
#define PRIME64_1 11400714785074694791ULL
|
||||
#define PRIME64_2 14029467366897019727ULL
|
||||
#define PRIME64_3 1609587929392839161ULL
|
||||
#define PRIME64_4 9650029242287828579ULL
|
||||
#define PRIME64_5 2870177450012600261ULL
|
||||
|
||||
//**************************************
|
||||
// Architecture Macros
|
||||
//**************************************
|
||||
typedef enum { XXH_bigEndian = 0, XXH_littleEndian = 1 } XXH_endianess;
|
||||
#ifndef XXH_CPU_LITTLE_ENDIAN // It is possible to define XXH_CPU_LITTLE_ENDIAN
|
||||
// externally, for example using a compiler
|
||||
// switch
|
||||
static const int one = 1;
|
||||
#define XXH_CPU_LITTLE_ENDIAN (*(char*)(&one))
|
||||
#endif
|
||||
|
||||
//**************************************
|
||||
// Macros
|
||||
//**************************************
|
||||
#define XXH_STATIC_ASSERT(c) \
|
||||
{ \
|
||||
enum { XXH_static_assert = 1 / (!!(c)) }; \
|
||||
} // use only *after* variable declarations
|
||||
|
||||
//****************************
|
||||
// Memory reads
|
||||
//****************************
|
||||
typedef enum { XXH_aligned, XXH_unaligned } XXH_alignment;
|
||||
|
||||
FORCE_INLINE U32
|
||||
XXH_readLE32_align(const void* ptr, XXH_endianess endian, XXH_alignment align)
|
||||
{
|
||||
if (align == XXH_unaligned)
|
||||
return endian == XXH_littleEndian ? A32(ptr) : XXH_swap32(A32(ptr));
|
||||
else
|
||||
return endian == XXH_littleEndian ? *(U32*)ptr : XXH_swap32(*(U32*)ptr);
|
||||
}
|
||||
|
||||
FORCE_INLINE U32
|
||||
XXH_readLE32(const void* ptr, XXH_endianess endian)
|
||||
{
|
||||
return XXH_readLE32_align(ptr, endian, XXH_unaligned);
|
||||
}
|
||||
|
||||
FORCE_INLINE U64
|
||||
XXH_readLE64_align(const void* ptr, XXH_endianess endian, XXH_alignment align)
|
||||
{
|
||||
if (align == XXH_unaligned)
|
||||
return endian == XXH_littleEndian ? A64(ptr) : XXH_swap64(A64(ptr));
|
||||
else
|
||||
return endian == XXH_littleEndian ? *(U64*)ptr : XXH_swap64(*(U64*)ptr);
|
||||
}
|
||||
|
||||
FORCE_INLINE U64
|
||||
XXH_readLE64(const void* ptr, XXH_endianess endian)
|
||||
{
|
||||
return XXH_readLE64_align(ptr, endian, XXH_unaligned);
|
||||
}
|
||||
|
||||
//****************************
|
||||
// Simple Hash Functions
|
||||
//****************************
|
||||
FORCE_INLINE U32
|
||||
XXH32_endian_align(
|
||||
const void* input,
|
||||
size_t len,
|
||||
U32 seed,
|
||||
XXH_endianess endian,
|
||||
XXH_alignment align)
|
||||
{
|
||||
const BYTE* p = (const BYTE*)input;
|
||||
const BYTE* bEnd = p + len;
|
||||
U32 h32;
|
||||
#define XXH_get32bits(p) XXH_readLE32_align(p, endian, align)
|
||||
|
||||
#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
|
||||
if (p == NULL)
|
||||
{
|
||||
len = 0;
|
||||
bEnd = p = (const BYTE*)(size_t)16;
|
||||
}
|
||||
#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_get32bits(p) * PRIME32_2;
|
||||
v1 = XXH_rotl32(v1, 13);
|
||||
v1 *= PRIME32_1;
|
||||
p += 4;
|
||||
v2 += XXH_get32bits(p) * PRIME32_2;
|
||||
v2 = XXH_rotl32(v2, 13);
|
||||
v2 *= PRIME32_1;
|
||||
p += 4;
|
||||
v3 += XXH_get32bits(p) * PRIME32_2;
|
||||
v3 = XXH_rotl32(v3, 13);
|
||||
v3 *= PRIME32_1;
|
||||
p += 4;
|
||||
v4 += XXH_get32bits(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 + 4 <= bEnd)
|
||||
{
|
||||
h32 += XXH_get32bits(p) * PRIME32_3;
|
||||
h32 = XXH_rotl32(h32, 17) * PRIME32_4;
|
||||
p += 4;
|
||||
}
|
||||
|
||||
while (p < bEnd)
|
||||
{
|
||||
h32 += (*p) * PRIME32_5;
|
||||
h32 = XXH_rotl32(h32, 11) * PRIME32_1;
|
||||
p++;
|
||||
}
|
||||
|
||||
h32 ^= h32 >> 15;
|
||||
h32 *= PRIME32_2;
|
||||
h32 ^= h32 >> 13;
|
||||
h32 *= PRIME32_3;
|
||||
h32 ^= h32 >> 16;
|
||||
|
||||
return h32;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
XXH32(const void* input, size_t len, unsigned 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, input, len);
|
||||
return XXH32_digest(&state);
|
||||
#else
|
||||
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
|
||||
|
||||
#if !defined(XXH_USE_UNALIGNED_ACCESS)
|
||||
if ((((size_t)input) & 3) ==
|
||||
0) // Input is aligned, let's leverage the speed advantage
|
||||
{
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH32_endian_align(
|
||||
input, len, seed, XXH_littleEndian, XXH_aligned);
|
||||
else
|
||||
return XXH32_endian_align(
|
||||
input, len, seed, XXH_bigEndian, XXH_aligned);
|
||||
}
|
||||
#endif
|
||||
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH32_endian_align(
|
||||
input, len, seed, XXH_littleEndian, XXH_unaligned);
|
||||
else
|
||||
return XXH32_endian_align(
|
||||
input, len, seed, XXH_bigEndian, XXH_unaligned);
|
||||
#endif
|
||||
}
|
||||
|
||||
FORCE_INLINE U64
|
||||
XXH64_endian_align(
|
||||
const void* input,
|
||||
size_t len,
|
||||
U64 seed,
|
||||
XXH_endianess endian,
|
||||
XXH_alignment align)
|
||||
{
|
||||
const BYTE* p = (const BYTE*)input;
|
||||
const BYTE* bEnd = p + len;
|
||||
U64 h64;
|
||||
#define XXH_get64bits(p) XXH_readLE64_align(p, endian, align)
|
||||
|
||||
#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
|
||||
if (p == NULL)
|
||||
{
|
||||
len = 0;
|
||||
bEnd = p = (const BYTE*)(size_t)32;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (len >= 32)
|
||||
{
|
||||
const BYTE* const limit = bEnd - 32;
|
||||
U64 v1 = seed + PRIME64_1 + PRIME64_2;
|
||||
U64 v2 = seed + PRIME64_2;
|
||||
U64 v3 = seed + 0;
|
||||
U64 v4 = seed - PRIME64_1;
|
||||
|
||||
do
|
||||
{
|
||||
v1 += XXH_get64bits(p) * PRIME64_2;
|
||||
p += 8;
|
||||
v1 = XXH_rotl64(v1, 31);
|
||||
v1 *= PRIME64_1;
|
||||
v2 += XXH_get64bits(p) * PRIME64_2;
|
||||
p += 8;
|
||||
v2 = XXH_rotl64(v2, 31);
|
||||
v2 *= PRIME64_1;
|
||||
v3 += XXH_get64bits(p) * PRIME64_2;
|
||||
p += 8;
|
||||
v3 = XXH_rotl64(v3, 31);
|
||||
v3 *= PRIME64_1;
|
||||
v4 += XXH_get64bits(p) * PRIME64_2;
|
||||
p += 8;
|
||||
v4 = XXH_rotl64(v4, 31);
|
||||
v4 *= PRIME64_1;
|
||||
} while (p <= limit);
|
||||
|
||||
h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) +
|
||||
XXH_rotl64(v4, 18);
|
||||
|
||||
v1 *= PRIME64_2;
|
||||
v1 = XXH_rotl64(v1, 31);
|
||||
v1 *= PRIME64_1;
|
||||
h64 ^= v1;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
|
||||
v2 *= PRIME64_2;
|
||||
v2 = XXH_rotl64(v2, 31);
|
||||
v2 *= PRIME64_1;
|
||||
h64 ^= v2;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
|
||||
v3 *= PRIME64_2;
|
||||
v3 = XXH_rotl64(v3, 31);
|
||||
v3 *= PRIME64_1;
|
||||
h64 ^= v3;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
|
||||
v4 *= PRIME64_2;
|
||||
v4 = XXH_rotl64(v4, 31);
|
||||
v4 *= PRIME64_1;
|
||||
h64 ^= v4;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
}
|
||||
else
|
||||
{
|
||||
h64 = seed + PRIME64_5;
|
||||
}
|
||||
|
||||
h64 += (U64)len;
|
||||
|
||||
while (p + 8 <= bEnd)
|
||||
{
|
||||
U64 k1 = XXH_get64bits(p);
|
||||
k1 *= PRIME64_2;
|
||||
k1 = XXH_rotl64(k1, 31);
|
||||
k1 *= PRIME64_1;
|
||||
h64 ^= k1;
|
||||
h64 = XXH_rotl64(h64, 27) * PRIME64_1 + PRIME64_4;
|
||||
p += 8;
|
||||
}
|
||||
|
||||
if (p + 4 <= bEnd)
|
||||
{
|
||||
h64 ^= (U64)(XXH_get32bits(p)) * PRIME64_1;
|
||||
h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
|
||||
p += 4;
|
||||
}
|
||||
|
||||
while (p < bEnd)
|
||||
{
|
||||
h64 ^= (*p) * PRIME64_5;
|
||||
h64 = XXH_rotl64(h64, 11) * PRIME64_1;
|
||||
p++;
|
||||
}
|
||||
|
||||
h64 ^= h64 >> 33;
|
||||
h64 *= PRIME64_2;
|
||||
h64 ^= h64 >> 29;
|
||||
h64 *= PRIME64_3;
|
||||
h64 ^= h64 >> 32;
|
||||
|
||||
return h64;
|
||||
}
|
||||
|
||||
unsigned long long
|
||||
XXH64(const void* input, size_t len, unsigned long long 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, input, len);
|
||||
return XXH64_digest(&state);
|
||||
#else
|
||||
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
|
||||
|
||||
#if !defined(XXH_USE_UNALIGNED_ACCESS)
|
||||
if ((((size_t)input) & 7) ==
|
||||
0) // Input is aligned, let's leverage the speed advantage
|
||||
{
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH64_endian_align(
|
||||
input, len, seed, XXH_littleEndian, XXH_aligned);
|
||||
else
|
||||
return XXH64_endian_align(
|
||||
input, len, seed, XXH_bigEndian, XXH_aligned);
|
||||
}
|
||||
#endif
|
||||
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH64_endian_align(
|
||||
input, len, seed, XXH_littleEndian, XXH_unaligned);
|
||||
else
|
||||
return XXH64_endian_align(
|
||||
input, len, seed, XXH_bigEndian, XXH_unaligned);
|
||||
#endif
|
||||
}
|
||||
|
||||
/****************************************************
|
||||
* Advanced Hash Functions
|
||||
****************************************************/
|
||||
|
||||
/*** Allocation ***/
|
||||
typedef struct
|
||||
{
|
||||
U64 total_len;
|
||||
U32 seed;
|
||||
U32 v1;
|
||||
U32 v2;
|
||||
U32 v3;
|
||||
U32 v4;
|
||||
U32 mem32[4]; /* defined as U32 for alignment */
|
||||
U32 memsize;
|
||||
} XXH_istate32_t;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
U64 total_len;
|
||||
U64 seed;
|
||||
U64 v1;
|
||||
U64 v2;
|
||||
U64 v3;
|
||||
U64 v4;
|
||||
U64 mem64[4]; /* defined as U64 for alignment */
|
||||
U32 memsize;
|
||||
} XXH_istate64_t;
|
||||
|
||||
XXH32_state_t*
|
||||
XXH32_createState(void)
|
||||
{
|
||||
static_assert(
|
||||
sizeof(XXH32_state_t) >= sizeof(XXH_istate32_t),
|
||||
""); // A compilation error here means XXH32_state_t is not large
|
||||
// enough
|
||||
return (XXH32_state_t*)XXH_malloc(sizeof(XXH32_state_t));
|
||||
}
|
||||
XXH_errorcode
|
||||
XXH32_freeState(XXH32_state_t* statePtr)
|
||||
{
|
||||
XXH_free(statePtr);
|
||||
return XXH_OK;
|
||||
};
|
||||
|
||||
XXH64_state_t*
|
||||
XXH64_createState(void)
|
||||
{
|
||||
static_assert(
|
||||
sizeof(XXH64_state_t) >= sizeof(XXH_istate64_t),
|
||||
""); // A compilation error here means XXH64_state_t is not large
|
||||
// enough
|
||||
return (XXH64_state_t*)XXH_malloc(sizeof(XXH64_state_t));
|
||||
}
|
||||
XXH_errorcode
|
||||
XXH64_freeState(XXH64_state_t* statePtr)
|
||||
{
|
||||
XXH_free(statePtr);
|
||||
return XXH_OK;
|
||||
};
|
||||
|
||||
/*** Hash feed ***/
|
||||
|
||||
XXH_errorcode
|
||||
XXH32_reset(XXH32_state_t* state_in, U32 seed)
|
||||
{
|
||||
XXH_istate32_t* state = (XXH_istate32_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;
|
||||
}
|
||||
|
||||
XXH_errorcode
|
||||
XXH64_reset(XXH64_state_t* state_in, unsigned long long seed)
|
||||
{
|
||||
XXH_istate64_t* state = (XXH_istate64_t*)state_in;
|
||||
state->seed = seed;
|
||||
state->v1 = seed + PRIME64_1 + PRIME64_2;
|
||||
state->v2 = seed + PRIME64_2;
|
||||
state->v3 = seed + 0;
|
||||
state->v4 = seed - PRIME64_1;
|
||||
state->total_len = 0;
|
||||
state->memsize = 0;
|
||||
return XXH_OK;
|
||||
}
|
||||
|
||||
FORCE_INLINE XXH_errorcode
|
||||
XXH32_update_endian(
|
||||
XXH32_state_t* state_in,
|
||||
const void* input,
|
||||
size_t len,
|
||||
XXH_endianess endian)
|
||||
{
|
||||
XXH_istate32_t* state = (XXH_istate32_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((BYTE*)(state->mem32) + state->memsize, input, len);
|
||||
state->memsize += (U32)len;
|
||||
return XXH_OK;
|
||||
}
|
||||
|
||||
if (state->memsize) // some data left from previous update
|
||||
{
|
||||
XXH_memcpy(
|
||||
(BYTE*)(state->mem32) + state->memsize, input, 16 - state->memsize);
|
||||
{
|
||||
const U32* p32 = state->mem32;
|
||||
state->v1 += XXH_readLE32(p32, endian) * PRIME32_2;
|
||||
state->v1 = XXH_rotl32(state->v1, 13);
|
||||
state->v1 *= PRIME32_1;
|
||||
p32++;
|
||||
state->v2 += XXH_readLE32(p32, endian) * PRIME32_2;
|
||||
state->v2 = XXH_rotl32(state->v2, 13);
|
||||
state->v2 *= PRIME32_1;
|
||||
p32++;
|
||||
state->v3 += XXH_readLE32(p32, endian) * PRIME32_2;
|
||||
state->v3 = XXH_rotl32(state->v3, 13);
|
||||
state->v3 *= PRIME32_1;
|
||||
p32++;
|
||||
state->v4 += XXH_readLE32(p32, endian) * 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_readLE32(p, endian) * PRIME32_2;
|
||||
v1 = XXH_rotl32(v1, 13);
|
||||
v1 *= PRIME32_1;
|
||||
p += 4;
|
||||
v2 += XXH_readLE32(p, endian) * PRIME32_2;
|
||||
v2 = XXH_rotl32(v2, 13);
|
||||
v2 *= PRIME32_1;
|
||||
p += 4;
|
||||
v3 += XXH_readLE32(p, endian) * PRIME32_2;
|
||||
v3 = XXH_rotl32(v3, 13);
|
||||
v3 *= PRIME32_1;
|
||||
p += 4;
|
||||
v4 += XXH_readLE32(p, endian) * 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->mem32, p, bEnd - p);
|
||||
state->memsize = (int)(bEnd - p);
|
||||
}
|
||||
|
||||
return XXH_OK;
|
||||
}
|
||||
|
||||
XXH_errorcode
|
||||
XXH32_update(XXH32_state_t* state_in, const void* input, size_t len)
|
||||
{
|
||||
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
|
||||
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH32_update_endian(state_in, input, len, XXH_littleEndian);
|
||||
else
|
||||
return XXH32_update_endian(state_in, input, len, XXH_bigEndian);
|
||||
}
|
||||
|
||||
FORCE_INLINE U32
|
||||
XXH32_digest_endian(const XXH32_state_t* state_in, XXH_endianess endian)
|
||||
{
|
||||
XXH_istate32_t* state = (XXH_istate32_t*)state_in;
|
||||
const BYTE* p = (const BYTE*)state->mem32;
|
||||
BYTE* bEnd = (BYTE*)(state->mem32) + 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 + 4 <= bEnd)
|
||||
{
|
||||
h32 += XXH_readLE32(p, endian) * PRIME32_3;
|
||||
h32 = XXH_rotl32(h32, 17) * PRIME32_4;
|
||||
p += 4;
|
||||
}
|
||||
|
||||
while (p < bEnd)
|
||||
{
|
||||
h32 += (*p) * PRIME32_5;
|
||||
h32 = XXH_rotl32(h32, 11) * PRIME32_1;
|
||||
p++;
|
||||
}
|
||||
|
||||
h32 ^= h32 >> 15;
|
||||
h32 *= PRIME32_2;
|
||||
h32 ^= h32 >> 13;
|
||||
h32 *= PRIME32_3;
|
||||
h32 ^= h32 >> 16;
|
||||
|
||||
return h32;
|
||||
}
|
||||
|
||||
U32
|
||||
XXH32_digest(const XXH32_state_t* state_in)
|
||||
{
|
||||
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
|
||||
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH32_digest_endian(state_in, XXH_littleEndian);
|
||||
else
|
||||
return XXH32_digest_endian(state_in, XXH_bigEndian);
|
||||
}
|
||||
|
||||
FORCE_INLINE XXH_errorcode
|
||||
XXH64_update_endian(
|
||||
XXH64_state_t* state_in,
|
||||
const void* input,
|
||||
size_t len,
|
||||
XXH_endianess endian)
|
||||
{
|
||||
XXH_istate64_t* state = (XXH_istate64_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 < 32) // fill in tmp buffer
|
||||
{
|
||||
XXH_memcpy(((BYTE*)state->mem64) + state->memsize, input, len);
|
||||
state->memsize += (U32)len;
|
||||
return XXH_OK;
|
||||
}
|
||||
|
||||
if (state->memsize) // some data left from previous update
|
||||
{
|
||||
XXH_memcpy(
|
||||
((BYTE*)state->mem64) + state->memsize, input, 32 - state->memsize);
|
||||
{
|
||||
const U64* p64 = state->mem64;
|
||||
state->v1 += XXH_readLE64(p64, endian) * PRIME64_2;
|
||||
state->v1 = XXH_rotl64(state->v1, 31);
|
||||
state->v1 *= PRIME64_1;
|
||||
p64++;
|
||||
state->v2 += XXH_readLE64(p64, endian) * PRIME64_2;
|
||||
state->v2 = XXH_rotl64(state->v2, 31);
|
||||
state->v2 *= PRIME64_1;
|
||||
p64++;
|
||||
state->v3 += XXH_readLE64(p64, endian) * PRIME64_2;
|
||||
state->v3 = XXH_rotl64(state->v3, 31);
|
||||
state->v3 *= PRIME64_1;
|
||||
p64++;
|
||||
state->v4 += XXH_readLE64(p64, endian) * PRIME64_2;
|
||||
state->v4 = XXH_rotl64(state->v4, 31);
|
||||
state->v4 *= PRIME64_1;
|
||||
p64++;
|
||||
}
|
||||
p += 32 - state->memsize;
|
||||
state->memsize = 0;
|
||||
}
|
||||
|
||||
if (p + 32 <= bEnd)
|
||||
{
|
||||
const BYTE* const limit = bEnd - 32;
|
||||
U64 v1 = state->v1;
|
||||
U64 v2 = state->v2;
|
||||
U64 v3 = state->v3;
|
||||
U64 v4 = state->v4;
|
||||
|
||||
do
|
||||
{
|
||||
v1 += XXH_readLE64(p, endian) * PRIME64_2;
|
||||
v1 = XXH_rotl64(v1, 31);
|
||||
v1 *= PRIME64_1;
|
||||
p += 8;
|
||||
v2 += XXH_readLE64(p, endian) * PRIME64_2;
|
||||
v2 = XXH_rotl64(v2, 31);
|
||||
v2 *= PRIME64_1;
|
||||
p += 8;
|
||||
v3 += XXH_readLE64(p, endian) * PRIME64_2;
|
||||
v3 = XXH_rotl64(v3, 31);
|
||||
v3 *= PRIME64_1;
|
||||
p += 8;
|
||||
v4 += XXH_readLE64(p, endian) * PRIME64_2;
|
||||
v4 = XXH_rotl64(v4, 31);
|
||||
v4 *= PRIME64_1;
|
||||
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, bEnd - p);
|
||||
state->memsize = (int)(bEnd - p);
|
||||
}
|
||||
|
||||
return XXH_OK;
|
||||
}
|
||||
|
||||
XXH_errorcode
|
||||
XXH64_update(XXH64_state_t* state_in, const void* input, size_t len)
|
||||
{
|
||||
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
|
||||
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH64_update_endian(state_in, input, len, XXH_littleEndian);
|
||||
else
|
||||
return XXH64_update_endian(state_in, input, len, XXH_bigEndian);
|
||||
}
|
||||
|
||||
FORCE_INLINE U64
|
||||
XXH64_digest_endian(const XXH64_state_t* state_in, XXH_endianess endian)
|
||||
{
|
||||
XXH_istate64_t* state = (XXH_istate64_t*)state_in;
|
||||
const BYTE* p = (const BYTE*)state->mem64;
|
||||
BYTE* bEnd = (BYTE*)state->mem64 + state->memsize;
|
||||
U64 h64;
|
||||
|
||||
if (state->total_len >= 32)
|
||||
{
|
||||
U64 v1 = state->v1;
|
||||
U64 v2 = state->v2;
|
||||
U64 v3 = state->v3;
|
||||
U64 v4 = state->v4;
|
||||
|
||||
h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) +
|
||||
XXH_rotl64(v4, 18);
|
||||
|
||||
v1 *= PRIME64_2;
|
||||
v1 = XXH_rotl64(v1, 31);
|
||||
v1 *= PRIME64_1;
|
||||
h64 ^= v1;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
|
||||
v2 *= PRIME64_2;
|
||||
v2 = XXH_rotl64(v2, 31);
|
||||
v2 *= PRIME64_1;
|
||||
h64 ^= v2;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
|
||||
v3 *= PRIME64_2;
|
||||
v3 = XXH_rotl64(v3, 31);
|
||||
v3 *= PRIME64_1;
|
||||
h64 ^= v3;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
|
||||
v4 *= PRIME64_2;
|
||||
v4 = XXH_rotl64(v4, 31);
|
||||
v4 *= PRIME64_1;
|
||||
h64 ^= v4;
|
||||
h64 = h64 * PRIME64_1 + PRIME64_4;
|
||||
}
|
||||
else
|
||||
{
|
||||
h64 = state->seed + PRIME64_5;
|
||||
}
|
||||
|
||||
h64 += (U64)state->total_len;
|
||||
|
||||
while (p + 8 <= bEnd)
|
||||
{
|
||||
U64 k1 = XXH_readLE64(p, endian);
|
||||
k1 *= PRIME64_2;
|
||||
k1 = XXH_rotl64(k1, 31);
|
||||
k1 *= PRIME64_1;
|
||||
h64 ^= k1;
|
||||
h64 = XXH_rotl64(h64, 27) * PRIME64_1 + PRIME64_4;
|
||||
p += 8;
|
||||
}
|
||||
|
||||
if (p + 4 <= bEnd)
|
||||
{
|
||||
h64 ^= (U64)(XXH_readLE32(p, endian)) * PRIME64_1;
|
||||
h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
|
||||
p += 4;
|
||||
}
|
||||
|
||||
while (p < bEnd)
|
||||
{
|
||||
h64 ^= (*p) * PRIME64_5;
|
||||
h64 = XXH_rotl64(h64, 11) * PRIME64_1;
|
||||
p++;
|
||||
}
|
||||
|
||||
h64 ^= h64 >> 33;
|
||||
h64 *= PRIME64_2;
|
||||
h64 ^= h64 >> 29;
|
||||
h64 *= PRIME64_3;
|
||||
h64 ^= h64 >> 32;
|
||||
|
||||
return h64;
|
||||
}
|
||||
|
||||
unsigned long long
|
||||
XXH64_digest(const XXH64_state_t* state_in)
|
||||
{
|
||||
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
|
||||
|
||||
if ((endian_detected == XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
|
||||
return XXH64_digest_endian(state_in, XXH_littleEndian);
|
||||
else
|
||||
return XXH64_digest_endian(state_in, XXH_bigEndian);
|
||||
}
|
||||
|
||||
} // namespace detail
|
||||
} // namespace beast
|
||||
@@ -1,170 +0,0 @@
|
||||
/*
|
||||
xxHash - Extremely Fast Hash algorithm
|
||||
Header File
|
||||
Copyright (C) 2012-2014, 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/
|
||||
*/
|
||||
|
||||
/* 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
|
||||
|
||||
Q.Score is a measure of quality of the hash function.
|
||||
It depends on successfully passing SMHasher test set.
|
||||
10 is a perfect score.
|
||||
*/
|
||||
|
||||
#ifndef BEAST_HASH_XXHASH_H_INCLUDED
|
||||
#define BEAST_HASH_XXHASH_H_INCLUDED
|
||||
|
||||
/*****************************
|
||||
Includes
|
||||
*****************************/
|
||||
#include <stddef.h> /* size_t */
|
||||
|
||||
namespace beast {
|
||||
namespace detail {
|
||||
|
||||
/*****************************
|
||||
Type
|
||||
*****************************/
|
||||
typedef enum { XXH_OK = 0, XXH_ERROR } XXH_errorcode;
|
||||
|
||||
/*****************************
|
||||
Simple Hash Functions
|
||||
*****************************/
|
||||
|
||||
unsigned int
|
||||
XXH32(const void* input, size_t length, unsigned seed);
|
||||
unsigned long long
|
||||
XXH64(const void* input, size_t length, unsigned long long seed);
|
||||
|
||||
/*
|
||||
XXH32() :
|
||||
Calculate the 32-bits 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. This function successfully passes all SMHasher tests. Speed on Core
|
||||
2 Duo @ 3 GHz (single thread, SMHasher benchmark) : 5.4 GB/s XXH64() : Calculate
|
||||
the 64-bits hash of sequence of length "len" stored at memory address "input".
|
||||
*/
|
||||
|
||||
/*****************************
|
||||
Advanced Hash Functions
|
||||
*****************************/
|
||||
typedef struct
|
||||
{
|
||||
long long ll[6];
|
||||
} XXH32_state_t;
|
||||
typedef struct
|
||||
{
|
||||
long long ll[11];
|
||||
} XXH64_state_t;
|
||||
|
||||
/*
|
||||
These structures allow static allocation of XXH states.
|
||||
States must then be initialized using XXHnn_reset() before first use.
|
||||
|
||||
If you prefer dynamic allocation, please refer to functions below.
|
||||
*/
|
||||
|
||||
XXH32_state_t*
|
||||
XXH32_createState(void);
|
||||
XXH_errorcode
|
||||
XXH32_freeState(XXH32_state_t* statePtr);
|
||||
|
||||
XXH64_state_t*
|
||||
XXH64_createState(void);
|
||||
XXH_errorcode
|
||||
XXH64_freeState(XXH64_state_t* statePtr);
|
||||
|
||||
/*
|
||||
These functions create and release memory for XXH state.
|
||||
States must then be initialized using XXHnn_reset() before first use.
|
||||
*/
|
||||
|
||||
XXH_errorcode
|
||||
XXH32_reset(XXH32_state_t* statePtr, unsigned seed);
|
||||
XXH_errorcode
|
||||
XXH32_update(XXH32_state_t* statePtr, const void* input, size_t length);
|
||||
unsigned int
|
||||
XXH32_digest(const XXH32_state_t* statePtr);
|
||||
|
||||
XXH_errorcode
|
||||
XXH64_reset(XXH64_state_t* statePtr, unsigned long long seed);
|
||||
XXH_errorcode
|
||||
XXH64_update(XXH64_state_t* statePtr, const void* input, size_t length);
|
||||
unsigned long long
|
||||
XXH64_digest(const XXH64_state_t* statePtr);
|
||||
|
||||
/*
|
||||
These functions calculate the xxHash of an input provided in multiple smaller
|
||||
packets, as opposed to an input provided as a single block.
|
||||
|
||||
XXH state space must first be allocated, using either static or dynamic method
|
||||
provided above.
|
||||
|
||||
Start a new hash by initializing state with a seed, using XXHnn_reset().
|
||||
|
||||
Then, feed the hash state by calling XXHnn_update() as many times as necessary.
|
||||
Obviously, input must be valid, meaning allocated and read accessible.
|
||||
The function returns an error code, with 0 meaning OK, and any other value
|
||||
meaning there is an error.
|
||||
|
||||
Finally, you can produce a hash anytime, by using XXHnn_digest().
|
||||
This function returns the final nn-bits hash.
|
||||
You can nonetheless continue feeding the hash state with more input,
|
||||
and therefore get some new hashes, by calling again XXHnn_digest().
|
||||
|
||||
When you are done, don't forget to free XXH state space, using typically
|
||||
XXHnn_freeState().
|
||||
*/
|
||||
|
||||
} // namespace detail
|
||||
} // namespace beast
|
||||
|
||||
#endif
|
||||
@@ -20,9 +20,11 @@
|
||||
#ifndef BEAST_HASH_XXHASHER_H_INCLUDED
|
||||
#define BEAST_HASH_XXHASHER_H_INCLUDED
|
||||
|
||||
#include <ripple/beast/hash/impl/xxhash.h>
|
||||
#include <boost/endian/conversion.hpp>
|
||||
#include <xxhash.h>
|
||||
|
||||
#include <cstddef>
|
||||
#include <new>
|
||||
#include <type_traits>
|
||||
|
||||
namespace beast {
|
||||
@@ -33,16 +35,35 @@ private:
|
||||
// requires 64-bit std::size_t
|
||||
static_assert(sizeof(std::size_t) == 8, "");
|
||||
|
||||
detail::XXH64_state_t state_;
|
||||
XXH3_state_t* state_;
|
||||
|
||||
static XXH3_state_t*
|
||||
allocState()
|
||||
{
|
||||
auto ret = XXH3_createState();
|
||||
if (ret == nullptr)
|
||||
throw std::bad_alloc();
|
||||
return ret;
|
||||
}
|
||||
|
||||
public:
|
||||
using result_type = std::size_t;
|
||||
|
||||
static constexpr auto const endian = boost::endian::order::native;
|
||||
|
||||
xxhasher() noexcept
|
||||
xxhasher(xxhasher const&) = delete;
|
||||
xxhasher&
|
||||
operator=(xxhasher const&) = delete;
|
||||
|
||||
xxhasher()
|
||||
{
|
||||
detail::XXH64_reset(&state_, 1);
|
||||
state_ = allocState();
|
||||
XXH3_64bits_reset(state_);
|
||||
}
|
||||
|
||||
~xxhasher() noexcept
|
||||
{
|
||||
XXH3_freeState(state_);
|
||||
}
|
||||
|
||||
template <
|
||||
@@ -50,7 +71,8 @@ public:
|
||||
std::enable_if_t<std::is_unsigned<Seed>::value>* = nullptr>
|
||||
explicit xxhasher(Seed seed)
|
||||
{
|
||||
detail::XXH64_reset(&state_, seed);
|
||||
state_ = allocState();
|
||||
XXH3_64bits_reset_withSeed(state_, seed);
|
||||
}
|
||||
|
||||
template <
|
||||
@@ -58,18 +80,19 @@ public:
|
||||
std::enable_if_t<std::is_unsigned<Seed>::value>* = nullptr>
|
||||
xxhasher(Seed seed, Seed)
|
||||
{
|
||||
detail::XXH64_reset(&state_, seed);
|
||||
state_ = allocState();
|
||||
XXH3_64bits_reset_withSeed(state_, seed);
|
||||
}
|
||||
|
||||
void
|
||||
operator()(void const* key, std::size_t len) noexcept
|
||||
{
|
||||
detail::XXH64_update(&state_, key, len);
|
||||
XXH3_64bits_update(state_, key, len);
|
||||
}
|
||||
|
||||
explicit operator std::size_t() noexcept
|
||||
{
|
||||
return detail::XXH64_digest(&state_);
|
||||
return XXH3_64bits_digest(state_);
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
Reference in New Issue
Block a user