src/journal/lookup3.h

   1 #pragma once
   2
   3 #include <inttypes.h>
   4 #include <sys/types.h>
   5
   6 #include "macro.h"
   7
   8 uint32_t jenkins_hashword(const uint32_t *k, size_t length, uint32_t initval) _pure_;
   9 void jenkins_hashword2(const uint32_t *k, size_t length, uint32_t *pc, uint32_t *pb);
  10
  11 uint32_t jenkins_hashlittle(const void *key, size_t length, uint32_t initval) _pure_;
  12 void jenkins_hashlittle2(const void *key, size_t length, uint32_t *pc, uint32_t *pb);
  13
  14 uint32_t jenkins_hashbig(const void *key, size_t length, uint32_t initval) _pure_;
  15
  16 static inline uint64_t hash64(const void *data, size_t length) {
  17         uint32_t a = 0, b = 0;
  18
  19         jenkins_hashlittle2(data, length, &a, &b);
  20
  21         return ((uint64_t) a << 32ULL) | (uint64_t) b;
  22 }