javaCompile.destinationDirectory.fileValue(new File('somewhere'))
        def invalidExecutable = temporaryFolder.file("invalidExecutable")

        when:
        javaCompile.options.fork = true
        javaCompile.options.forkOptions.executable = invalidExecutable
        javaCompile.createSpec()

        then:
        def e = thrown(AbstractProperty.PropertyQueryException)

     */
    @Input
    public boolean isFork() {
        return fork;
    }

    /**
     * Sets whether to run the compiler in its own process. Note that this does
     * not necessarily mean that a new process will be created for each compile task.
     * Defaults to {@code false}.
     */
    public void setFork(boolean fork) {
        this.fork = fork;
    }

    /**

func runtime_AfterFork()
func runtime_AfterForkInChild()

// Fork, dup fd onto 0..len(fd), and exec(argv0, argvv, envv) in child.
// If a dup or exec fails, write the errno error to pipe.
// (Pipe is close-on-exec so if exec succeeds, it will be closed.)
// In the child, this function must not acquire any locks, because
// they might have been locked at the time of the fork. This means
// no rescheduling, no malloc calls, and no new stack segments.

            compileJava {
                options.fork = true
                options.forkOptions.executable = "${TextUtil.normaliseFileSeparators(jdk.javacExecutable.absolutePath)}"
            }
        """
    }

    private TestFile configureForkOptionsJavaHome(Jvm jdk) {
        buildFile << """
            compileJava {
                options.fork = true

                <version>2.23.0</version>
              </path>
            </annotationProcessorPaths>
            <!-- Fork:

                 - for JDK8 because we use a javac9 bootclasspath

                 - for JDK9+ because we need args like add-exports
                 -->
            <fork>true</fork>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>

                <version>2.23.0</version>
              </path>
            </annotationProcessorPaths>
            <!-- Fork:

                 - for JDK8 because we use a javac9 bootclasspath

                 - for JDK9+ because we need args like add-exports
                 -->
            <fork>true</fork>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>

        buildFile << """
            apply plugin: 'java'
            ${mavenCentralRepository()}
            dependencies { ${testImplementationConfiguration} 'junit:junit:4.13' }
            compileTestJava.options.fork = true  // forked as 'Gradle Test Executor 1'
        """

        file("src/test/java/MyTest.java") << """
            package example;
            public class MyTest {

		// that delegated go command may think that it is itself a telemetry
		// child.
		//
		// On the other hand, if telemetryChildVar were simply unset, then the
		// delegated go commands would fork themselves recursively. Short-circuit
		// this recursion.
		os.Setenv(telemetryChildVar, "2")
		upload := os.Getenv(telemetryUploadVar) == "1"
		child(reportCrashes, upload, config.UploadStartTime, config.UploadURL)

}

// signalDuringFork is called if we receive a signal while doing a fork.
// We do not want signals at that time, as a signal sent to the process
// group may be delivered to the child process, causing confusion.
// This should never be called, because we block signals across the fork;
// this function is just a safety check. See issue 18600 for background.
func signalDuringFork(sig uint32) {

}

packageCycles {
    excludePatterns.add("org/gradle/**")
}

tasks.test {
    setForkEvery(200)
}

tasks.compileTestGroovy {
    groovyOptions.fork("memoryInitialSize" to "128M", "memoryMaximumSize" to "1G")
}

tasks.isolatedProjectsIntegTest {
    enabled = true
}

integTest.usesJavadocCodeSnippets = true