ck_pr_fence_store_load(3)
enforce ordering of store operations to load operations
LIBRARY
Concurrency Kit (libck, -lck)
SYNOPSIS
In ck_pr.h
Ft void
Fn ck_pr_fence_store_load void
Ft void
Fn ck_pr_fence_strict_store_load void
DESCRIPTION
The
Fn ck_pr_fence_store_load
function enfores the ordering of any memory store,
Fn ck_pr_store
and atomic read-modify-write operations to load
operations relative to the invocation of the function. This function
always serve as an implicit compiler barrier.
A fence will currently always be emitted for this
operation, including for TSO memory model targets.
EXAMPLE
#include <ck_pr.h>
static int a = 0;
static int b = 0;
void
function(void)
{
unsigned int snapshot_b;
ck_pr_store_int(&a, 1);
/*
* Guarantee that the store to a is completed
* with respect to load from b.
*/
ck_pr_fence_store_load();
snapshot_b = ck_pr_load_int(&b, 2);
return;
}
RETURN VALUES
This function has no return value.