Category: call sequence
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Distribution of method chains in Java and Python
Some languages support three different ways of organizing a sequence of functions/methods, with calls taking as their first argument the value returned by the immediately prior call. For instance, Java supports the following possibilities: r1=f1(val); r2=f2(r1); r3=f3(r2); // Sequential calls r3=f3(f2(f1(val))); // Nested calls, read right to left r3=val.f1().f2().f3(); // Method chain, read left to…
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Measuring non-determinism in the Linux kernel
Developers often assume that it’s possible to predict the execution path a program will take, for a given set of input values, i.e., program behavior is deterministic. The execution path may be very complicated, and may depend on the contents of certain files (e.g., database…), but it’s deterministic. There is one kind of program where…