.\" .\" Copyright 2012-2013 Samy Al Bahra. .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" .Dd September 17, 2012 .Dt CK_HS_GET 3 .Sh NAME .Nm ck_hs_get .Nd load a key from a hash set .Sh LIBRARY Concurrency Kit (libck, \-lck) .Sh SYNOPSIS .In ck_hs.h .Ft void * .Fn ck_hs_get "ck_hs_t *hs" "unsigned long hash" "const void *key" .Sh DESCRIPTION The .Fn ck_hs_get 3 will return a pointer to a key in the hash set .Fa hs that is of equivalent value to the object pointed to by .Fa key . The key specified by .Fa key is expected to have the hash value specified by the .Fa hash argument (which is to have been previously generated using the .Xr CK_HS_HASH 3 macro). .Sh RETURN VALUES If the provided key is a member of .Fa hs then a pointer to the key as stored in .Fa hs is returned. If the key was not found in .Fa hs then a value of .Dv NULL is returned. .Sh ERRORS Behavior is undefined if .Fa entry or .Fa hs are uninitialized. .Sh SEE ALSO .Xr ck_hs_init 3 , .Xr ck_hs_move 3 , .Xr ck_hs_destroy 3 , .Xr CK_HS_HASH 3 , .Xr ck_hs_iterator_init 3 , .Xr ck_hs_next 3 , .Xr ck_hs_put 3 , .Xr ck_hs_set 3 , .Xr ck_hs_fas 3 , .Xr ck_hs_remove 3 , .Xr ck_hs_grow 3 , .Xr ck_hs_count 3 , .Xr ck_hs_reset 3 , .Xr ck_hs_reset_size 3 , .Xr ck_hs_stat 3 .Pp Additional information available at http://concurrencykit.org/