X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fhashtable%2Futils.c;h=1ea699d6edb921364a30d3c92e31e9ee538571b4;hb=994ab360b3264e19fdf590178601fa1f9f6489d0;hp=850f9e5db3d905be2f83da28221fc18ab6e589cb;hpb=90e535ef0d0433d31e805775f85e4d187b1cf82c;p=lttng-tools.git diff --git a/src/common/hashtable/utils.c b/src/common/hashtable/utils.c index 850f9e5db..1ea699d6e 100644 --- a/src/common/hashtable/utils.c +++ b/src/common/hashtable/utils.c @@ -60,6 +60,7 @@ #include "utils.h" #include /* attempt to define endianness */ #include +#include /* * My best guess at if you are big-endian or little-endian. This may @@ -446,12 +447,8 @@ static uint32_t __attribute__((unused)) hashlittle(const void *key, return c; } -#if (CAA_BITS_PER_LONG == 64) -/* - * Hash function for number value. - */ LTTNG_HIDDEN -unsigned long hash_key_ulong(void *_key, unsigned long seed) +unsigned long hash_key_u64(void *_key, unsigned long seed) { union { uint64_t v64; @@ -463,10 +460,21 @@ unsigned long hash_key_ulong(void *_key, unsigned long seed) } key; v.v64 = (uint64_t) seed; - key.v64 = (uint64_t) _key; + key.v64 = *(uint64_t *) _key; hashword2(key.v32, 2, &v.v32[0], &v.v32[1]); return v.v64; } + +#if (CAA_BITS_PER_LONG == 64) +/* + * Hash function for number value. + */ +LTTNG_HIDDEN +unsigned long hash_key_ulong(void *_key, unsigned long seed) +{ + uint64_t __key = (uint64_t) _key; + return (unsigned long) hash_key_u64(&__key, seed); +} #else /* * Hash function for number value. @@ -489,6 +497,17 @@ unsigned long hash_key_str(void *key, unsigned long seed) return hashlittle(key, strlen((char *) key), seed); } +/* + * Hash function for two uint64_t. + */ +LTTNG_HIDDEN +unsigned long hash_key_two_u64(void *key, unsigned long seed) +{ + struct lttng_ht_two_u64 *k = (struct lttng_ht_two_u64 *) key; + + return hash_key_u64(&k->key1, seed) ^ hash_key_u64(&k->key2, seed); +} + /* * Hash function compare for number value. */ @@ -502,6 +521,19 @@ int hash_match_key_ulong(void *key1, void *key2) return 0; } +/* + * Hash function compare for number value. + */ +LTTNG_HIDDEN +int hash_match_key_u64(void *key1, void *key2) +{ + if (*(uint64_t *) key1 == *(uint64_t *) key2) { + return 1; + } + + return 0; +} + /* * Hash compare function for string. */ @@ -514,3 +546,20 @@ int hash_match_key_str(void *key1, void *key2) return 0; } + +/* + * Hash function compare two uint64_t. + */ +LTTNG_HIDDEN +int hash_match_key_two_u64(void *key1, void *key2) +{ + struct lttng_ht_two_u64 *k1 = (struct lttng_ht_two_u64 *) key1; + struct lttng_ht_two_u64 *k2 = (struct lttng_ht_two_u64 *) key2; + + if (hash_match_key_u64(&k1->key1, &k2->key1) && + hash_match_key_u64(&k1->key2, &k2->key2)) { + return 1; + } + + return 0; +}