"We saw that allocating memory and retain release calls where dominating when profiling. So why not just do the same bare bone thing that C does. Write a bunch

"We saw that allocating memory and retain release calls where dominating when profiling. So why not just do the same bare bone thing that C does. Write a bunch of functions which read data from a byte array without allocating any objects." Good, but this can become a problem if you are not properly clearing the buffer and suddenly start leaking data. OpenSSL is the current big example.