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CK_PR_FENCE_ATOMIC_... FreeBSD Library Functions Manual	CK_PR_FENCE_ATOMIC_...

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 fol-
     lowing 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

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | EXAMPLE | RETURN VALUES | SEE ALSO

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