/*
* __wt_bloom_open --
* Open a Bloom filter object for use by a single session. The filter must
* have been created and finalized.
*/
int
__wt_bloom_open(WT_SESSION_IMPL *session,
const char *uri, uint32_t factor, uint32_t k,
WT_CURSOR *owner, WT_BLOOM **bloomp)
{
WT_BLOOM *bloom;
WT_CURSOR *c;
WT_DECL_RET;
uint64_t size;
WT_RET(__bloom_init(session, uri, NULL, &bloom));
WT_ERR(__bloom_open_cursor(bloom, owner));
c = bloom->c;
/* Find the largest key, to get the size of the filter. */
WT_ERR(c->prev(c));
WT_ERR(c->get_key(c, &size));
WT_ERR(c->reset(c));
WT_ERR(__bloom_setup(bloom, 0, size, factor, k));
*bloomp = bloom;
return (0);
err: (void)__wt_bloom_close(bloom);
return (ret);
}
/*
* __wt_bloom_create --
*
* Creates and configures a WT_BLOOM handle, allocates a bitstring in memory to
* use while populating the bloom filter.
*
* count - is the expected number of inserted items
* factor - is the number of bits to use per inserted item
* k - is the number of hash values to set or test per item
*/
int
__wt_bloom_create(
WT_SESSION_IMPL *session, const char *uri, const char *config,
uint64_t count, uint32_t factor, uint32_t k, WT_BLOOM **bloomp)
{
WT_BLOOM *bloom;
WT_RET(__bloom_init(session, uri, config, &bloom));
WT_RET(__bloom_setup(bloom, count, 0, factor, k));
WT_RET(__bit_alloc(session, bloom->m, &bloom->bitstring));
*bloomp = bloom;
return (0);
}
*
* count - is the expected number of inserted items
* factor - is the number of bits to use per inserted item
* k - is the number of hash values to set or test per item
*/
int
__wt_bloom_create(
WT_SESSION_IMPL *session, const char *uri, const char *config,
uint64_t count, uint32_t factor, uint32_t k, WT_BLOOM **bloomp)
WT_GCC_FUNC_ATTRIBUTE((visibility("default")))
{
WT_BLOOM *bloom;
WT_DECL_RET;
WT_RET(__bloom_init(session, uri, config, &bloom));
WT_ERR(__bloom_setup(bloom, count, 0, factor, k));
WT_ERR(__bit_alloc(session, bloom->m, &bloom->bitstring));
*bloomp = bloom;
return (0);
err: WT_TRET(__wt_bloom_close(bloom));
return (ret);
}
/*
* __bloom_open_cursor --
* Open a cursor to read from a Bloom filter.
*/
static int
