1CK_PR_FENCE_STORE_LOA... BSD Library Functions Manual CK_PR_FENCE_STORE_LOA...
2

NAME

4     ck_pr_fence_store_load — 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_load(void);
15
16     void
17     ck_pr_fence_strict_store_load(void);
18

DESCRIPTION

20     The ck_pr_fence_store_load() function enforces the ordering of any memory
21     store, ck_pr_store() and atomic read-modify-write operations to load
22     operations relative to the invocation of the function. This function
23     always serve as an implicit compiler barrier.  A fence will currently
24     always be emitted for this operation, including for TSO memory model tar‐
25     gets.
26

EXAMPLE

28           #include <ck_pr.h>
29
30           static int a = 0;
31           static int b = 0;
32
33           void
34           function(void)
35           {
36                   unsigned int snapshot_b;
37
38                   ck_pr_store_int(&a, 1);
39
40                   /*
41                    * Guarantee that the store to a is completed
42                    * with respect to load from b.
43                    */
44                   ck_pr_fence_store_load();
45                   snapshot_b = ck_pr_load_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_atomic(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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