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CK_HS_FAS(3)	       FreeBSD Library Functions Manual		  CK_HS_FAS(3)

NAME
     ck_hs_fas -- fetch	and store key in hash set

LIBRARY
     Concurrency Kit (libck, -lck)

SYNOPSIS
     #include <ck_hs.h>

     bool
     ck_hs_fas(ck_hs_t *hs, unsigned long hash,	const void *key,
	 void **previous);

DESCRIPTION
     The ck_hs_fas(3) function will fetch and store the	key specified by the
     key argument in the hash set pointed to by	the hs argument. The key spec-
     ified by key is expected to have the hash value specified by the hash ar-
     gument (which was previously generated using the CK_HS_HASH(3) macro).

     If	the call to ck_hs_fas(3) was successful	then the key specified by key
     was successfully stored in	the hash set pointed to	by hs.	The key	must
     already exist in the hash set, and	is replaced by key and the previous
     value is stored into the void pointer pointed to by the previous argu-
     ment. If the key does not exist in	the hash set then the function will
     return false and the hash set is unchanged. This function is guaranteed
     to	be stable with respect to memory usage.

RETURN VALUES
     Upon successful completion, ck_hs_fas(3) returns true and otherwise re-
     turns false on failure.

ERRORS
     Behavior is undefined if key or hs	are uninitialized.

SEE ALSO
     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_put_unique(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), ck_hs_reset_size(3),
     ck_hs_stat(3)

     Additional	information available at http://concurrencykit.org/

				 June 20, 2013

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO

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