AutoScalingUtilizationMetric Class — netty Architecture

Source Code

common/src/main/java/io/netty/util/concurrent/AutoScalingEventExecutorChooserFactory.java lines 54–82

    public static final class AutoScalingUtilizationMetric {
        private final EventExecutor executor;
        private final AtomicLong utilizationBits = new AtomicLong();

        AutoScalingUtilizationMetric(EventExecutor executor) {
            this.executor = executor;
        }

        /**
         * Returns the most recently calculated utilization for the associated executor.
         * @return a value from 0.0 to 1.0.
         */
        public double utilization() {
            return Double.longBitsToDouble(utilizationBits.get());
        }

        /**
         * Returns the {@link EventExecutor} this metric belongs too.
         * @return the executor.
         */
        public EventExecutor executor() {
            return executor;
        }

        void setUtilization(double utilization) {
            long bits = Double.doubleToRawLongBits(utilization);
            utilizationBits.lazySet(bits);
        }
    }