X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=lib%2Fbloom.c;fp=lib%2Fbloom.c;h=33d093a33f6984cf7adc05b4e9092bb4d339300d;hp=8059a65b29a5915c6eeee11ef3096566e19a6107;hb=78583f91bc1df864f2d8e270e08ddd386f379172;hpb=951984d8c1171b03718600a26e4666601d27bb91 diff --git a/lib/bloom.c b/lib/bloom.c index 8059a65b..33d093a3 100644 --- a/lib/bloom.c +++ b/lib/bloom.c @@ -6,6 +6,8 @@ #include "../minmax.h" #include "../crc/xxhash.h" #include "../crc/murmur3.h" +#include "../crc/crc32c.h" +#include "../crc/fnv.h" struct bloom { uint64_t nentries; @@ -21,22 +23,42 @@ struct bloom_hash { uint32_t (*fn)(const void *, uint32_t, uint32_t); }; +static uint32_t bloom_crc32c(const void *buf, uint32_t len, uint32_t seed) +{ + return fio_crc32c(buf, len); +} + +static uint32_t bloom_fnv(const void *buf, uint32_t len, uint32_t seed) +{ + return fnv(buf, len, seed); +} + +#define BLOOM_SEED 0x8989 + struct bloom_hash hashes[] = { { - .seed = 0x8989, + .seed = BLOOM_SEED, .fn = jhash, }, { - .seed = 0x8989, + .seed = BLOOM_SEED, .fn = XXH32, }, { - .seed = 0x8989, + .seed = BLOOM_SEED, .fn = murmurhash3, }, + { + .seed = BLOOM_SEED, + .fn = bloom_crc32c, + }, + { + .seed = BLOOM_SEED, + .fn = bloom_fnv, + }, }; -#define N_HASHES 3 +#define N_HASHES 5 #define MIN_ENTRIES 1073741824UL @@ -45,6 +67,8 @@ struct bloom *bloom_new(uint64_t entries) struct bloom *b; size_t no_uints; + crc32c_intel_probe(); + b = malloc(sizeof(*b)); b->nentries = entries; no_uints = (entries + BITS_PER_INDEX - 1) / BITS_PER_INDEX;