Control flow methods

There are some helper methods which might be useful when writing code using ox’s concurrency operators:

• forever { ... } repeatedly evaluates the given code block forever

• repeatWhile { ... } repeatedly evaluates the given code block, as long as it returns true

• repeatUntil { ... } repeatedly evaluates the given code block, until it returns true

• never blocks the current thread indefinitely, until it is interrupted

• checkInterrupt() checks if the current thread is interrupted, and if so, throws an InterruptedException. Useful in compute-intensive code, which wants to cooperate in the cancellation protocol

• cede() yields the current (virtual) thread back to the scheduler, allowing other threads to run, and checks for interruption (as checkInterrupt() does). Useful in compute-intensive code, which doesn’t otherwise call any blocking operations: virtual threads are not preempted, so without yielding, a CPU-bound loop can starve other virtual threads. As a rule of thumb, call cede() about once every millisecond of computation (a single call costs about 1µs). For long-running computations, or code which can’t be instrumented with yields, see CPU-intensive operations.

All of these are inline methods, imposing no runtime overhead.