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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 ar- chitectures 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 ck_pr_stall(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | EXAMPLE | SEE ALSO
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