public class HeapProportionalCacheSizer {
    public static final String CACHE_RESERVED_SYSTEM_PROPERTY = "org.gradle.cache.reserved.mb";
    private static final int DEFAULT_SIZES_MAX_HEAP_MB = 910; // when -Xmx1024m, Runtime.maxMemory() returns about 910
    private static final int ASSUMED_USED_HEAP = 150; // assume that Gradle itself uses about 150MB heap

    private static final double MIN_RATIO = 0.2d;

    private final int maxHeapMB;

import (
	"net/textproto"
	_ "unsafe" // for go:linkname
)

// readMIMEHeader is defined in package [net/textproto].
//
//go:linkname readMIMEHeader net/textproto.readMIMEHeader

    private ScalaDocOptions scalaDocOptions;
    private String title;
    private final Property<String> maxMemory;
    private final Property<JavaLauncher> javaLauncher;
    private final ConfigurableFileCollection compilationOutputs;

    public ScalaDoc() {
        ObjectFactory objectFactory = getObjectFactory();
        this.maxMemory = objectFactory.property(String.class);

        succeeds "clean"
        withBuildCache().run scaladoc

        then:
        skipped scaladoc
    }

    def "scaladoc uses maxMemory"() {
        classes.baseline()
        buildScript(classes.buildScript())
        buildFile << """
            scaladoc.maxMemory = '234M'
        """
        when:
        succeeds scaladoc, "-i"

        then:
        // Looks like

public class DefaultJvmMemoryInfo implements JvmMemoryInfo {
    private final long totalMemory; //this does not change

    public DefaultJvmMemoryInfo() {
        this.totalMemory = Runtime.getRuntime().maxMemory();
    }

    /**
     * Max memory that this process can commit in bytes. Always returns the same value because maximum memory is determined at jvm start.
     */
    long getMaxMemory() {

            <tr>
                <td>destinationDir</td>
                <td><literal><replaceable>${project.docsDir}</replaceable>/scaladoc</literal></td>
            </tr>
            <tr>
                <td>maxMemory</td>
                <td><literal>null</literal></td>
            </tr>
            <tr>
                <td>classpath</td>

        int nextBuildNum = runningStats.getBuildCount() + 1;
        if (nextBuildNum == 1) {
            return String.format("Starting build in new daemon [memory: %s]", NumberUtil.formatBytes(Runtime.getRuntime().maxMemory()));
        } else {
            return String.format("Starting %s build in daemon %s", NumberUtil.ordinal(nextBuildNum), stats.getHealthInfo());
        }
    }

Accessors for org.gradle.api.tasks.javadoc.Javadoc.destinationDir don't use symmetrical @Nullable
Accessors for org.gradle.api.tasks.javadoc.Javadoc.maxMemory don't use symmetrical @Nullable
Accessors for org.gradle.api.tasks.testing.Test.forkEvery don't use symmetrical @Nullable
Accessors for org.gradle.api.tasks.testing.testng.TestNGOptions.parallel don't use symmetrical @Nullable

        return effectiveJvmOptions;
    }

    public JavaInfo getJvm() {
        return jvm;
    }

    public boolean isLowMemoryProcess() {
        return Runtime.getRuntime().maxMemory() <= 64L * 1024 * 1024; // 64MB is our default for a launcher process
    }

    static JvmOptions inferJvmOptions(FileCollectionFactory fileCollectionFactory, List<String> arguments) {

    }

    public static String getMemoryUsageLog() {
        final Runtime runtime = Runtime.getRuntime();
        final long freeBytes = runtime.freeMemory();
        final long maxBytes = runtime.maxMemory();
        final long totalBytes = runtime.totalMemory();
        final long usedBytes = totalBytes - freeBytes;