int session_send_io_evt_to_thread_custom (void *data, u32 thread_index,
session_evt_type_t evt_type);
void session_send_rpc_evt_to_thread (u32 thread_index, void *fp,
int session_send_io_evt_to_thread_custom (void *data, u32 thread_index,
session_evt_type_t evt_type);
void session_send_rpc_evt_to_thread (u32 thread_index, void *fp,