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Merge pull request #2485 from Kloen/killing-warnings-computehash64

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Switch ComputeHash64 len param to size_t instead of int
This commit is contained in:
Yuri Kunde Schlesner 2017-01-28 10:37:40 -08:00 • committed by GitHub
commit ac4ea522cb
2 changed files with 7 additions and 6 deletions
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8
src/common/hash.cpp
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@ -16,7 +16,7 @@ namespace Common {
// Block read - if your platform needs to do endian-swapping or can only handle aligned reads, do // Block read - if your platform needs to do endian-swapping or can only handle aligned reads, do
// the conversion here // the conversion here
static FORCE_INLINE u64 getblock64(const u64* p, int i) { static FORCE_INLINE u64 getblock64(const u64* p, size_t i) {
return p[i]; return p[i];
} }
@ -34,9 +34,9 @@ static FORCE_INLINE u64 fmix64(u64 k) {
// This is the 128-bit variant of the MurmurHash3 hash function that is targeted for 64-bit // This is the 128-bit variant of the MurmurHash3 hash function that is targeted for 64-bit
// platforms (MurmurHash3_x64_128). It was taken from: // platforms (MurmurHash3_x64_128). It was taken from:
// https://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp // https://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp
void MurmurHash3_128(const void* key, int len, u32 seed, void* out) { void MurmurHash3_128(const void* key, size_t len, u32 seed, void* out) {
const u8* data = (const u8*)key; const u8* data = (const u8*)key;
const int nblocks = len / 16; const size_t nblocks = len / 16;
u64 h1 = seed; u64 h1 = seed;
u64 h2 = seed; u64 h2 = seed;
@ -48,7 +48,7 @@ void MurmurHash3_128(const void* key, int len, u32 seed, void* out) {
const u64* blocks = (const u64*)(data); const u64* blocks = (const u64*)(data);
for (int i = 0; i < nblocks; i++) { for (size_t i = 0; i < nblocks; i++) {
u64 k1 = getblock64(blocks, i * 2 + 0); u64 k1 = getblock64(blocks, i * 2 + 0);
u64 k2 = getblock64(blocks, i * 2 + 1); u64 k2 = getblock64(blocks, i * 2 + 1);

5
src/common/hash.h
View file

@ -4,11 +4,12 @@
#pragma once #pragma once
#include <cstddef>
#include "common/common_types.h" #include "common/common_types.h"
namespace Common { namespace Common {
void MurmurHash3_128(const void* key, int len, u32 seed, void* out); void MurmurHash3_128(const void* key, size_t len, u32 seed, void* out);
/** /**
* Computes a 64-bit hash over the specified block of data * Computes a 64-bit hash over the specified block of data
@ -16,7 +17,7 @@ void MurmurHash3_128(const void* key, int len, u32 seed, void* out);
* @param len Length of data (in bytes) to compute hash over * @param len Length of data (in bytes) to compute hash over
* @returns 64-bit hash value that was computed over the data block * @returns 64-bit hash value that was computed over the data block
*/ */
static inline u64 ComputeHash64(const void* data, int len) { static inline u64 ComputeHash64(const void* data, size_t len) {
u64 res[2]; u64 res[2];
MurmurHash3_128(data, len, 0, res); MurmurHash3_128(data, len, 0, res);
return res[0]; return res[0];