[#OPENSSL_atexit]
= OPENSSL_atexit
:mrdocs:

Register a handler to run during OPENSSL_cleanup().

== Synopsis

Declared in `<openssl/crypto.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OPENSSL_atexit(void(* handler)());
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *handler*
| Function invoked once when OpenSSL is deinitialized.
|===


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