1CK_PR_FENCE_STORE_ATO... BSD Library Functions Manual CK_PR_FENCE_STORE_ATO...
2

NAME

4     ck_pr_fence_store_atomic — enforce ordering of store operations to load
5     operations
6

LIBRARY

8     Concurrency Kit (libck, -lck)
9

SYNOPSIS

11     #include <ck_pr.h>
12
13     void
14     ck_pr_fence_store_atomic(void);
15
16     void
17     ck_pr_fence_strict_store_atomic(void);
18

DESCRIPTION

20     The ck_pr_fence_store_atomic() function enforces the ordering of any mem‐
21     ory store, ck_pr_store() and atomic read-modify-write operations to
22     atomic read-modify-write operations relative to the invocation of the
23     function. This function always serve as an implicit compiler barrier.
24     This functions will emit a fence for PSO and RMO targets. In order to
25     force the emission of a fence use the ck_pr_fence_strict_store_atomic()
26     function.
27

EXAMPLE

29           #include <ck_pr.h>
30
31           static int a = 0;
32           static int b = 0;
33
34           void
35           function(void)
36           {
37
38                   ck_pr_store_int(&a, 1);
39
40                   /*
41                    * Guarantee that the store to a is completed
42                    * with respect to the update of b.
43                    */
44                   ck_pr_fence_store_atomic();
45                   ck_pr_add_int(&b, 2);
46                   return;
47           }
48

RETURN VALUES

50     This function has no return value.
51

SEE ALSO

53     ck_pr_stall(3), ck_pr_fence_atomic(3), ck_pr_fence_atomic_store(3),
54     ck_pr_fence_atomic_load(3), ck_pr_fence_load(3),
55     ck_pr_fence_load_atomic(3), ck_pr_fence_load_store(3),
56     ck_pr_fence_load_depends(3), ck_pr_fence_store(3),
57     ck_pr_fence_store_load(3), ck_pr_fence_memory(3), ck_pr_barrier(3),
58     ck_pr_fas(3), ck_pr_load(3), ck_pr_store(3), ck_pr_faa(3), ck_pr_inc(3),
59     ck_pr_dec(3), ck_pr_neg(3), ck_pr_not(3), ck_pr_add(3), ck_pr_sub(3),
60     ck_pr_and(3), ck_pr_or(3), ck_pr_xor(3), ck_pr_cas(3), ck_pr_btc(3),
61     ck_pr_bts(3), ck_pr_btr(3)
62
63     Additional information available at http://concurrencykit.org/
64
65                                 May 18, 2013
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