stasis-bLSM/bloomFilter.h
sears 3619e86271 initial checkin of bloom filter
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1232 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
2010-10-03 18:06:19 +00:00

28 lines
791 B
C

#ifndef BLOOM_FILTER_H
#define BLOOM_FILTER_H
#include <stasis/common.h>
BEGIN_C_DECLS
typedef struct bloom_filter_t bloom_filter_t;
/**
@return 0 if there is not enough memory, or some other error occurred; a pointer to the new bloom filter otherwise.
*/
bloom_filter_t * bloom_filter_create(uint64_t(*hash_func_a)(const char*,int), uint64_t(*hash_func_b)(const char*,int),
uint64_t num_expected_items, double false_positive_rate);
void bloom_filter_destroy(bloom_filter_t*);
void bloom_filter_insert(bloom_filter_t * bf, const char* key, int len);
/**
@return 1 if the value might be in the bloom filter, 0 otherwise
*/
int bloom_filter_lookup(bloom_filter_t * bf, const char* key, int len);
void bloom_filter_print_stats(bloom_filter_t * bf);
END_C_DECLS
#endif