This file and its contents are supplied under the terms of the
Common Development and Distribution License ("CDDL"), version 1.0.
You may only use this file in accordance with the terms of version
1.0 of the CDDL.

A full copy of the text of the CDDL should have accompanied this
source. A copy of the CDDL is also available via the Internet at
http://www.illumos.org/license/CDDL.


Copyright (c) 2014, Joyent, Inc.

.Dd "Dec 22, 2014" .Dt SMT_PAUSE 3C .Os .Sh NAME .Nm smt_pause .Nd hardware-aware busy wait .Sh SYNOPSIS n synch.h .Ft void .Fo smt_pause .Fa void .Fc .Sh DESCRIPTION The .Fn smt_pause function performs a busy-wait for an implementation defined period of time. On hardware platforms that support it, it notifies the hardware that this is occurring in an effort to minimize resource usage. This is commonly used in the implementation of spin loops. .Sh INTERFACE STABILITY .Sy Committed .Sh MT-LEVEL .Sy MT-Safe .Sh SEE ALSO .Xr attributes 5