Method attach_to

phx_percona/percona/sql/binlog.cc:265–280

Attach the POSIX thread to a session. */

    Attach the POSIX thread to a session.
   */
  int attach_to(THD *thd)
  {
#ifndef EMBEDDED_LIBRARY
    if (DBUG_EVALUATE_IF("simulate_session_attach_error", 1, 0)
        || unlikely(setup_thread_globals(thd)))
    {
      /*
        Indirectly uses pthread_setspecific, which can only return
        ENOMEM or EINVAL. Since store_globals are using correct keys,
        the only alternative is out of memory.
      */
      return ER_OUTOFMEMORY;
    }
#endif /* EMBEDDED_LIBRARY */
    return 0;
  }

  int setup_thread_globals(THD *thd) const {
    int error= 0;