I know it wouldn't be easy. But the goal could be to let users write simple programs that say what they mean. Since many programs do: while(!eof) { read(); wr

I know it wouldn't be easy. But the goal could be to let users write simple programs that say what they mean. Since many programs do: while(!eof) { read(); write(); } that could be optimized similar to the way a compiler optimizes known idioms. Perhaps it could notice a well know sequence of calls and avoid userspace/kernels space copies. But, yeah, very non-trivial.