private State doRescale()

in core/src/main/java/com/spotify/metrics/core/LockFreeExponentiallyDecayingReservoir.java [195:205]

• 7 lines of code
• 2 McCabe index (conditional complexity)

    private State doRescale(long currentTick, State stateSnapshot) {
        State newState = stateSnapshot.rescale(currentTick);
        if (stateUpdater.compareAndSet(this, stateSnapshot, newState)) {
            // newState successfully installed
            return newState;
        }
        // Otherwise another thread has won the race and we can return the result of a volatile read.
        // It's possible this has taken so long that another update is required, however that's unlikely
        // and no worse than the standard race between a rescale and update.
        return this.state;
    }