com.github.ferstl.jarscan.MaxMethodSizeMojo Maven / Gradle / Ivy

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A Maven plugin that scans the project artifact and its dependencies for methods that cannot be inlined by the JIT compiler. It uses the JarScan utility from the JITWatch project to do that. See https://github.com/AdoptOpenJDK/jitwatch .

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package com.github.ferstl.jarscan;

import org.adoptopenjdk.jitwatch.jarscan.IJarScanOperation;
import org.adoptopenjdk.jitwatch.jarscan.freqinlinesize.FreqInlineSizeOperation;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.plugins.annotations.ResolutionScope;


/**
 * List every method with bytecode larger than specified limit.
 *
 * @since 1.1
 */
@Mojo(
    name = "maxMethodSize",
    aggregator = false,
    defaultPhase = LifecyclePhase.VERIFY,
    requiresDependencyCollection = ResolutionScope.TEST,
    requiresDependencyResolution = ResolutionScope.TEST,
    requiresDirectInvocation = false,
    threadSafe = true)
public class MaxMethodSizeMojo extends AbstractJarScanMojo {

  /**
   * Report methods larger than the specified bytes. The default for {@code -XX:MaxInlineSize} is 35. The default for
   * {@code -XX:FreqInlineSize} is 325.
   *
   * @since 1.1
   */
  @Parameter(property = "limit", defaultValue = "1")
  private int limit;

  @Override
  protected String validateMojoParameters() {
    if (this.limit <= 0) {
      return "limit must be > 0.";
    }

    return null;
  }

  @Override
  protected IJarScanOperation createOperation() {
    return new FreqInlineSizeOperation(this.limit);
  }

}