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.Dd March 29, 2012
.Dt CK_HT_SET_SPMC 3
.Sh NAME
.Nm ck_ht_hash
.Nd generate a hash value for a hash table
.Sh LIBRARY
Concurrency Kit (libck, \-lck)
.Sh SYNOPSIS
.In ck_ht.h
.Ft bool
.Fn ck_ht_set_spmc "ck_ht_t *ht" "ck_ht_hash_t h" "ck_ht_entry_t *entry"
.Sh DESCRIPTION
The 
.Fn ck_ht_set_spmc
function will store the key-value pair specified in the
.Fa entry
argument in the hash table pointed to by the
.Fa ht
argument. The key specified in
.Fa entry
is expected to have the hash value specified by the
.Fa h
argument.
.Pp
If
.Fa ht
was created with CK_HT_MODE_BYTESTRING then
.Fa entry
must have been initialized with the
.Xr ck_ht_entry_set 3
function. If
.Fa ht
was created with CK_HT_MODE_DIRECT then
.Fa entry
must have been initialized with the
.Xr ck_ht_entry_set_direct 3
function.
.Pp
It is expected that
.Fa h
was initialized with
.Xr ck_ht_hash 3
if
.Fa ht
was created with CK_HT_MODE_BYTESTRING. If
.Fa ht
was initialized with CK_HT_MODE_DIRECT then it is
expected that 
.Fa h
was initialized with the
.Xr ck_ht_hash_direct 3
function.
.Pp
If the call to
.Fn ck_ht_set_spmc
was successful then the key-value pair in
.Fa entry
will contain the previous key-value pair associated
with the key originally contained in the
.Fa entry
argument. If the operation was unsuccessful then
.Fa entry
is unmodified.
.Pp
This function is safe to call in the presence of concurrent
.Xr ck_ht_get_spmc
operations.
.Sh RETURN VALUES
Upon successful completion
.Fn ck_ht_set_spmc
returns
.Dv true
and otherwise returns
.Dv false
on failure.
.Sh ERRORS
.Bl -tag -width Er
Behavior is undefined if
.Fa entry
or
.Fa ht
are uninitialized. The function will return
.Dv false
if the hash table required to be grown but failed
while attempting to grow.
.El
.Sh SEE ALSO
.Xr ck_ht_init 3 ,
.Xr ck_ht_destroy 3 ,
.Xr ck_ht_allocator_set 3 ,
.Xr ck_ht_hash 3 ,
.Xr ck_ht_hash_direct 3 ,
.Xr ck_ht_put_spmc 3 ,
.Xr ck_ht_get_spmc 3 ,
.Xr ck_ht_grow_spmc 3 ,
.Xr ck_ht_remove_spmc 3 ,
.Xr ck_ht_reset_spmc 3 ,
.Xr ck_ht_count 3 ,
.Xr ck_ht_entry_empty 3 ,
.Xr ck_ht_entry_key_set 3 ,
.Xr ck_ht_entry_key_set_direct 3 ,
.Xr ck_ht_entry_key 3 ,
.Xr ck_ht_entry_key_length 3 ,
.Xr ck_ht_entry_value 3 ,
.Xr ck_ht_entry_set 3 ,
.Xr ck_ht_entry_set_direct 3 ,
.Xr ck_ht_entry_key_direct 3 ,
.Xr ck_ht_entry_value_direct 3 ,
.Xr ck_ht_iterator_init 3 ,
.Xr ck_ht_next 3
.Pp
Additional information available at http://concurrencykit.org/