Function hts_tpool_dispatch2 

pub unsafe extern "C" fn hts_tpool_dispatch2(
    p: *mut hts_tpool,
    q: *mut hts_tpool_process,
    func: Option<unsafe extern "C" fn(*mut c_void) -> *mut c_void>,
    arg: *mut c_void,
    nonblock: i32,
) -> i32