I know that in Java writing of int (32bit) is an atomic operation. What about Go? Can go-routine be aborted in the middle when writing to int32, e.g. after writing first 16 bits?
The only way to guarantee atomicity is to use the atomic package, which is great for int32, and many other basic types. For more complex data types, you'll have to use other synchronization mechanisms, because atomicity may not be possible.