Function librocksdbsys::crocksdb_get_pinned

pub unsafe extern "C" fn crocksdb_get_pinned(
    db: *mut DBInstance, 
    readopts: *const DBReadOptions, 
    k: *const u8, 
    kLen: size_t, 
    err: *mut *mut c_char
) -> *mut DBPinnableSlice