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Man Pages


Manual Reference Pages  -  CK_PR_STALL (3)

NAME

ck_pr_stall - busy-wait primitive

CONTENTS

Library
Synopsis
Description
Example
See Also

LIBRARY

Concurrency Kit (libck, -lck)

SYNOPSIS


.In 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 architectures 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/

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