Use OS provided xxhash.

6 files changed, 6 insertions, 1105 deletions

diff --git a/vespalib/CMakeLists.txt b/vespalib/CMakeLists.txt
index 24f7d6e9214..a9d10954a6f 100644
--- a/vespalib/CMakeLists.txt
+++ b/vespalib/CMakeLists.txt
@@ -6,6 +6,7 @@ vespa_define_module(
 
     EXTERNAL_DEPENDS
     lz4
+    xxhash
     zstd
 
     APPS
@@ -145,5 +146,4 @@ vespa_define_module(
     src/vespa/vespalib/trace
     src/vespa/vespalib/util
     src/vespa/vespalib/websocket
-    src/vespa/vespalib/xxhash
 )
diff --git a/vespalib/src/vespa/vespalib/CMakeLists.txt b/vespalib/src/vespa/vespalib/CMakeLists.txt
index 676362a7aef..bab9fa79947 100644
--- a/vespalib/src/vespa/vespalib/CMakeLists.txt
+++ b/vespalib/src/vespa/vespalib/CMakeLists.txt
@@ -21,7 +21,6 @@ vespa_add_library(vespalib
     $<TARGET_OBJECTS:vespalib_vespalib_trace>
     $<TARGET_OBJECTS:vespalib_vespalib_util>
     $<TARGET_OBJECTS:vespalib_vespalib_websocket>
-    $<TARGET_OBJECTS:vespalib_vespalib_xxhash>
     INSTALL lib64
     DEPENDS
     gcc
diff --git a/vespalib/src/vespa/vespalib/net/crypto_engine.cpp b/vespalib/src/vespa/vespalib/net/crypto_engine.cpp
index 6c2b60d15c1..bf875a70985 100644
--- a/vespalib/src/vespa/vespalib/net/crypto_engine.cpp
+++ b/vespalib/src/vespa/vespalib/net/crypto_engine.cpp
@@ -1,10 +1,6 @@
 // Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 
 #include "crypto_engine.h"
-#include <vector>
-#include <chrono>
-#include <thread>
-#include <vespa/vespalib/xxhash/xxhash.h>
 #include <vespa/vespalib/stllike/string.h>
 #include <vespa/vespalib/net/tls/authorization_mode.h>
 #include <vespa/vespalib/net/tls/auto_reloading_tls_crypto_engine.h>
@@ -14,7 +10,11 @@
 #include <vespa/vespalib/net/tls/tls_crypto_engine.h>
 #include <vespa/vespalib/net/tls/maybe_tls_crypto_engine.h>
 #include <vespa/vespalib/data/smart_buffer.h>
-#include <assert.h>
+#include <vector>
+#include <chrono>
+#include <thread>
+#include <xxhash.h>
+#include <cassert>
 
 #include <vespa/log/log.h>
 LOG_SETUP(".vespalib.net.crypto_engine");
diff --git a/vespalib/src/vespa/vespalib/xxhash/CMakeLists.txt b/vespalib/src/vespa/vespalib/xxhash/CMakeLists.txt
deleted file mode 100644
index 016cfe24325..00000000000
--- a/vespalib/src/vespa/vespalib/xxhash/CMakeLists.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-# Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-vespa_add_library(vespalib_vespalib_xxhash OBJECT
-    SOURCES
-    xxhash.c
-    DEPENDS
-)
diff --git a/vespalib/src/vespa/vespalib/xxhash/xxhash.c b/vespalib/src/vespa/vespalib/xxhash/xxhash.c
deleted file mode 100644
index 46b419795a2..00000000000
--- a/vespalib/src/vespa/vespalib/xxhash/xxhash.c
+++ /dev/null
@@ -1,935 +0,0 @@
-// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-/*
-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
-*/
-
-
-//**************************************
-// 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>
-FORCE_INLINE void* XXH_malloc(size_t s)
-{
-    return malloc(s);
-}
-FORCE_INLINE void  XXH_free  (void* p)
-{
-    free(p);
-}
-// for memcpy()
-#include <string.h>
-FORCE_INLINE 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
-
-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) (((const U32_S *)(x))->v)
-#define A64(x) (((const 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   (*(const 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 U32* 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 ? *ptr : XXH_swap32(*ptr);
-}
-
-FORCE_INLINE U32 XXH_readLE32(const U32* ptr, XXH_endianess endian)
-{
-    return XXH_readLE32_align(ptr, endian, XXH_unaligned);
-}
-
-FORCE_INLINE U64 XXH_readLE64_align(const U64* 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 ? *ptr : XXH_swap64(*ptr);
-}
-
-FORCE_INLINE U64 XXH_readLE64(const U64* 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((const U32*)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((const U64*)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 memsize;
-    char memory[16];
-} XXH_istate32_t;
-
-typedef struct
-{
-    U64 total_len;
-    U64 seed;
-    U64 v1;
-    U64 v2;
-    U64 v3;
-    U64 v4;
-    U32 memsize;
-    char memory[32];
-} XXH_istate64_t;
-
-
-XXH32_state_t* XXH32_createState(void)
-{
-    XXH_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*)malloc(sizeof(XXH32_state_t));
-}
-XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr)
-{
-    free(statePtr);
-    return XXH_OK;
-};
-
-XXH64_state_t* XXH64_createState(void)
-{
-    XXH_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*)malloc(sizeof(XXH64_state_t));
-}
-XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr)
-{
-    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(state->memory + state->memsize, input, len);
-        state->memsize += (U32)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_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((const U32*)p, endian) * PRIME32_2;
-            v1 = XXH_rotl32(v1, 13);
-            v1 *= PRIME32_1;
-            p+=4;
-            v2 += XXH_readLE32((const U32*)p, endian) * PRIME32_2;
-            v2 = XXH_rotl32(v2, 13);
-            v2 *= PRIME32_1;
-            p+=4;
-            v3 += XXH_readLE32((const U32*)p, endian) * PRIME32_2;
-            v3 = XXH_rotl32(v3, 13);
-            v3 *= PRIME32_1;
-            p+=4;
-            v4 += XXH_readLE32((const U32*)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->memory, 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)
-{
-    const XXH_istate32_t* state = (const XXH_istate32_t*) state_in;
-    const BYTE * p = (const BYTE*)state->memory;
-    const BYTE* bEnd = (const 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+4<=bEnd)
-    {
-        h32 += XXH_readLE32((const U32*)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(state->memory + state->memsize, input, len);
-        state->memsize += (U32)len;
-        return XXH_OK;
-    }
-
-    if (state->memsize)   // some data left from previous update
-    {
-        XXH_memcpy(state->memory + state->memsize, input, 32-state->memsize);
-        {
-            const U64* p64 = (const U64*)state->memory;
-            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((const U64*)p, endian) * PRIME64_2;
-            v1 = XXH_rotl64(v1, 31);
-            v1 *= PRIME64_1;
-            p+=8;
-            v2 += XXH_readLE64((const U64*)p, endian) * PRIME64_2;
-            v2 = XXH_rotl64(v2, 31);
-            v2 *= PRIME64_1;
-            p+=8;
-            v3 += XXH_readLE64((const U64*)p, endian) * PRIME64_2;
-            v3 = XXH_rotl64(v3, 31);
-            v3 *= PRIME64_1;
-            p+=8;
-            v4 += XXH_readLE64((const U64*)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->memory, 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)
-{
-    const XXH_istate64_t * state = (const XXH_istate64_t *) state_in;
-    const BYTE * p = (const BYTE*)state->memory;
-    const BYTE* bEnd = (const BYTE*)state->memory + 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((const U64*)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((const U32*)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);
-}
-
-
diff --git a/vespalib/src/vespa/vespalib/xxhash/xxhash.h b/vespalib/src/vespa/vespalib/xxhash/xxhash.h
deleted file mode 100644
index dfd17b76d77..00000000000
--- a/vespalib/src/vespa/vespalib/xxhash/xxhash.h
+++ /dev/null
@@ -1,157 +0,0 @@
-// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-/*
-   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.
-*/
-
-#pragma once
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
-
-/*****************************
-   Includes
-*****************************/
-#include <stddef.h>   /* size_t */
-
-
-/*****************************
-   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().
-*/
-
-
-#if defined (__cplusplus)
-}
-#endif