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---
date: 2022-01-07T08:00:00Z
title: Function MAKE-CONDITION-VARIABLE
weight: 3
---
#### Syntax:
**make-condition-variable** *&key* name => condition-variable
#### Arguments and values:
*name* -> a string or nil.\
*condition-variable* -> a [**condition-variable**](../condition-variable) object.
#### Description:
Creates a condition variable named `name`.
#### Exceptional situations:
Signals a condition of type
[**type-error**](http://www.lispworks.com/documentation/HyperSpec/Body/e_tp_err.htm#type-error)
if `name` is neither a string nor nil.
#### See also:
[**condition-variable**](../condition-variable)
#### Notes:
On some implementations the library exposes the native type directly,
while on others there is a custom implementations using semaphores and
locks.
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