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CK_HS_PUT_UNIQUE(3) BSD Library Functions Manual CK_HS_PUT_UNIQUE(3)
ck_hs_put_unique -- unconditionally store unique key into a hash set
Concurrency Kit (libck, -lck)
ck_hs_put_unique(ck_hs_t *hs, unsigned long hash, const void *key);
The ck_hs_put_unique(3) function will store the key specified by the key
argument in the hash set pointed to by the hs argument. The key specified
by key is expected to have the hash value specified by the hash argument
(which was previously generated using the CK_HS_HASH(3) macro).
If the call to ck_hs_put(3) was successful then the key specified by key
was successfully stored in the hash set pointed to by hs. The function
will cause undefined behavior if a key with an equivalent value is
already present in the hash set. For replacement semantics, please see
the ck_hs_set(3) function.
Upon successful completion, ck_hs_put_unique(3) returns true and other-
wise returns false on failure.
Behavior is undefined if key or hs are uninitialized. The function will
also return false if the hash set could not be enlarged to accomodate key
insertion. The function will result in undefined behavior if called for
an already inserted key value.
ck_hs_init(3), ck_hs_move(3), ck_hs_destroy(3), CK_HS_HASH(3),
ck_hs_iterator_init(3), ck_hs_next(3), ck_hs_get(3), ck_hs_put(3),
ck_hs_set(3), ck_hs_fas(3), ck_hs_remove(3), ck_hs_grow(3),
ck_hs_rebuild(3), ck_hs_gc(3), ck_hs_count(3), ck_hs_reset(3),
Additional information available at http://concurrencykit.org/
December 7, 2013