Function s2n_tls_sys::s2n_disable_atexit

pub unsafe extern "C" fn s2n_disable_atexit() -> c_int

Prevents S2N from installing an atexit handler, which allows safe shutdown of S2N from within a re-entrant shared library

@warning This function must be called BEFORE s2n_init() to have any effect. It will return an error if s2n is already initialized.

@note This will cause s2n_cleanup to do complete cleanup of s2n-tls when called from the main thread (the thread s2n_init was called from).

@returns S2N_SUCCESS on success. S2N_FAILURE on failure