com.fillumina.performance.producer.suite.ParametrizedRunnableSink Maven / Gradle / Ivy

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Configurable tool to easily compare performances of different code snippets and to take performance telemetry of a running application.

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package com.fillumina.performance.producer.suite;

/**
 * It's a {@link ParametrizedRunnable} that avoids dead code eviction.
 *
 * @author Francesco Illuminati
 */
public abstract class ParametrizedRunnableSink
        extends ParametrizedRunnable {
    private static final Object REFERENCE = new Object();

    /**
     * Override this method to provide the test's code.
     * The returned value is managed so the code used to get it is not
     * removed by the optimizations of the JVM.
     */
    public abstract Object sink(final P param);

    @Override
    public void call(final P param) {
        final Object obj = sink(param);
        // force obj to be evaluated and so the code returning it
        // will not be evicted
        if (obj == REFERENCE) {
            throw new AssertionError();
        }
    }
}