---
name: "gnutls_global_set_mutex"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_global_set_mutex"
---

# gnutls\_global\_set\_mutex(3)

API function

## NAME

gnutls\_global\_set\_mutex - API function

## SYNOPSIS

**#include \<gnutls/gnutls.h\>**

**void gnutls\_global\_set\_mutex(mutex\_init\_func** *init***, mutex\_deinit\_func** *deinit***, mutex\_lock\_func** *lock***, mutex\_unlock\_func** *unlock***);**

## ARGUMENTS

- mutex\_init\_func init

  mutex initialization function

- mutex\_deinit\_func deinit

  mutex deinitialization function

- mutex\_lock\_func lock

  mutex locking function

- mutex\_unlock\_func unlock

  mutex unlocking function

## DESCRIPTION

With this function you are allowed to override the default mutex locks used in some parts of gnutls and dependent libraries. This function should be used if you have complete control of your program and libraries. Do not call this function from a library, or preferably from any application unless really needed to. GnuTLS will use the appropriate locks for the running system.

This function must be called prior to any other GnuTLS function; otherwise the behavior is undefined.

## DEPRECATED

This function is discouraged on GnuTLS 3.7.3 or later.

## SINCE

2\.12.0

## REPORTING BUGS

Report bugs to \<bugs@gnutls.org\>.\
 Home page: https://www.gnutls.org

## COPYRIGHT

Copyright © 2001-2023 Free Software Foundation, Inc., and others.\
 Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

## SEE ALSO

The full documentation for **gnutls** is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

- https://www.gnutls.org/manual/