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CK_RHS_PUT_UNIQUE(3)     BSD Library Functions Manual     CK_RHS_PUT_UNIQUE(3)

     ck_rhs_put_unique -- unconditionally store unique key into a hash set

     Concurrency Kit (libck, -lck)

     #include <ck_rhs.h>

     ck_rhs_put_unique(ck_rhs_t *hs, unsigned long hash, const void *key);

     The ck_rhs_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_RHS_HASH(3) macro).

     If the call to ck_rhs_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_rhs_set(3) function.

     Upon successful completion, ck_rhs_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_rhs_init(3), ck_rhs_move(3), ck_rhs_destroy(3), CK_RHS_HASH(3),
     ck_rhs_iterator_init(3), ck_rhs_next(3), ck_rhs_get(3), ck_rhs_put(3),
     ck_rhs_set(3), ck_rhs_fas(3), ck_rhs_remove(3), ck_rhs_grow(3),
     ck_rhs_rebuild(3), ck_rhs_gc(3), ck_rhs_count(3), ck_rhs_reset(3),
     ck_rhs_reset_size(3), ck_rhs_stat(3)

     Additional information available at

                               December 7, 2013