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ck_pr_stall(3)		 BSD Library Functions Manual		ck_pr_stall(3)

NAME
     ck_pr_stall -- busy-wait primitive

LIBRARY
     Concurrency Kit (libck, -lck)

SYNOPSIS
     #include <ck_pr.h>

     void
     ck_pr_stall(void);

DESCRIPTION
     The ck_pr_stall(3)	function should	be used	inside retry paths of busy-
     wait loops.  It not only serves as	a compiler barrier, but	on some	archi-
     tectures it emits cycle-saving instructions.

EXAMPLE
	   #include <ck_pr.h>

	   static int ready = 0;

	   void
	   function(void)
	   {

		   /* Busy-wait	until ready is non-zero. */
		   while (ck_pr_load_int(&ready) == 0)
			   ck_pr_stall();

		   return;
	   }

SEE ALSO
     ck_pr_fence_load(3), ck_pr_fence_load_depends(3), ck_pr_fence_store(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/

				 April 7, 2013

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

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