ck_pr_fence_store_atomic man page on DragonFly
[printable version]
CK_PR_FENCE_STORE_ATO... BSD Library Functions Manual CK_PR_FENCE_STORE_ATO...
NAME
ck_pr_fence_store_atomic — enforce ordering of store operations to load
operations
LIBRARY
Concurrency Kit (libck, -lck)
SYNOPSIS
#include <ck_pr.h>
void
ck_pr_fence_store_atomic(void);
void
ck_pr_fence_strict_store_atomic(void);
DESCRIPTION
The ck_pr_fence_store_atomic() function enfores the ordering of any mem‐
ory store, ck_pr_store() and atomic read-modify-write operations to
atomic read-modify-write operations relative to the invocation of the
function. This function always serve as an implicit compiler barrier.
This functions will emit a fence for PSO and RMO targets. In order to
force the emission of a fence use the ck_pr_fence_strict_store_atomic()
function.
EXAMPLE
#include <ck_pr.h>
static int a = 0;
static int b = 0;
void
function(void)
{
ck_pr_store_int(&a, 1);
/*
* Guarantee that the store to a is completed
* with respect to the update of b.
*/
ck_pr_fence_store_atomic();
ck_pr_add_int(&b, 2);
return;
}
RETURN VALUES
This function has no return value.
SEE ALSO
ck_pr_stall(3), ck_pr_fence_atomic(3), ck_pr_fence_atomic_store(3),
ck_pr_fence_atomic_load(3), ck_pr_fence_load(3),
ck_pr_fence_load_atomic(3), ck_pr_fence_load_store(3),
ck_pr_fence_load_depends(3), ck_pr_fence_store(3),
ck_pr_fence_store_load(3), ck_pr_fence_memory(3), ck_pr_barrier(3),
ck_pr_fas(3), ck_pr_load(3), ck_pr_store(3), ck_pr_faa(3), ck_pr_inc(3),
ck_pr_dec(3), ck_pr_neg(3), ck_pr_not(3), ck_pr_add(3), ck_pr_sub(3),
ck_pr_and(3), ck_pr_or(3), ck_pr_xor(3), ck_pr_cas(3), ck_pr_btc(3),
ck_pr_bts(3), ck_pr_btr(3)
Additional information available at http://concurrencykit.org/
May 18, 2013
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