gnutls_global_init(3) — Linux manual page


gnutls_global_init(3)            gnutls            gnutls_global_init(3)

NAME         top

       gnutls_global_init - API function

SYNOPSIS         top

       #include <gnutls/gnutls.h>

       int gnutls_global_init( void);

ARGUMENTS         top


DESCRIPTION         top

       Since GnuTLS 3.3.0 this function is no longer necessary to be
       explicitly called. To disable the implicit call (in a library
       constructor) of this function set the environment variable

       This function performs any required precalculations, detects the
       supported CPU capabilities and initializes the underlying
       cryptographic backend. In order to free any resources taken by
       this call you should gnutls_global_deinit() when gnutls usage is
       no longer needed.

       This function increments a global counter, so that
       gnutls_global_deinit() only releases resources when it has been
       called as many times as gnutls_global_init().  This is useful
       when GnuTLS is used by more than one library in an application.
       This function can be called many times, but will only do
       something the first time. It is thread safe since GnuTLS 3.3.0.

       A subsequent call of this function if the initial has failed will
       return the same error code.

RETURNS         top

       On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a
       negative error code is returned.

REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001- 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         top

       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 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at
       ⟨⟩.  If you have a bug report for this
       manual page, send it to  This page was obtained
       from the tarball gnutls-3.7.2.tar.xz fetched from
       ⟨⟩ on 2021-08-27.  If you
       discover any rendering problems in this HTML version of the page,
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gnutls                            3.7.2            gnutls_global_init(3)