NAME

       ck_pr_fence_atomic_load — enforce ordering of atomic read-modify-write operations to load operations

LIBRARY

       Concurrency Kit (libck, -lck)

SYNOPSIS

       #include <ck_pr.h>

       void
       ck_pr_fence_atomic_load(void);

       void
       ck_pr_fence_strict_atomic_load(void);

DESCRIPTION

       The  ck_pr_fence_atomic_load()  function enforces the ordering of any atomic read-modify-write operations
       relative to any load operations following the function invocation.  This  function  always  serve  as  an
       implicit  compiler  barrier.  On  architectures  implementing  CK_MD_TSO, this operation only serves as a
       compiler barrier and no fences are  emitted.  To  force  the  unconditional  emission  of  a  fence,  use
       ck_pr_fence_strict_atomic_load().

EXAMPLE

             #include <ck_pr.h>

             static int a = 0;
             static int b = 0;

             void
             function(void)
             {
                     int c;

                     ck_pr_fas_int(&a, 1);

                     /*
                      * Guarantee that the update to a is completed
                      * with respect to the load of *b.
                      */
                     ck_pr_fence_atomic_load();
                     c = ck_pr_load_int(&b);

                     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_store(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_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 16, 2013                        CK_PR_FENCE_ATOMIC_LOAD(3)