ck_pr_fence_store_atomic (3) - Linux Manuals

ck_pr_fence_store_atomic: enforce ordering of store operations to load operations

NAME

ck_pr_fence_store_atomic - 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_atomic void Ft void Fn ck_pr_fence_strict_store_atomic void

DESCRIPTION

The Fn ck_pr_fence_store_atomic function enfores the ordering of any memory store, Fn 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 Fn 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.