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ck_pr_fence_memory(3)	 BSD Library Functions Manual	 ck_pr_fence_memory(3)

NAME
     ck_pr_fence_memory	-- enforce partial ordering of all memory operations

LIBRARY
     Concurrency Kit (libck, -lck)

SYNOPSIS
     #include <ck_pr.h>

     void
     ck_pr_fence_memory();

     void
     ck_pr_fence_strict_memory();

DESCRIPTION
     The ck_pr_fence_memory(3) function	enforces the ordering of any memory
     operations	with respect to	the invocation of the function.	This function
     always serves as an implicit compiler barrier.  Achitectures implementing
     CK_MD_TSO do not emit a barrier, but compiler barrier semantics remain.
     Architectures implementing	CK_MD_PSO and CK_MD_RMO	always emit an in-
     structions	which provides the specified ordering guarantees. To force the
     unconditional emission of a memory	fence, use
     ck_pr_fence_strict_memory().

EXAMPLE
	   #include <ck_pr.h>

	   static int a	= 0;
	   static int b;
	   static int c;
	   static int d;

	   void
	   function(void)
	   {
		   int snapshot_a;

		   ck_pr_store_int(&b, 1);
		   snapshot_a =	ck_pr_load_int(&a);

		   /*
		    * Make sure	previous memory	operations are
		    * ordered with respect to memory operations
		    * following	the ck_pr_fence_memory.
		    */
		   ck_pr_fence_memory();

		   ck_pr_store_int(&d, 3);
		   ck_pr_store_int(&c, 2);

		   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_atomic_load(3), ck_pr_fence_load(3),
     ck_pr_fence_load_depends(3), ck_pr_fence_store(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/

				 April 7, 2013

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

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