forking(true),
        noDaemon(true),
        parallel(true, true),
        configCache(true),
        isolatedProjects(true);

        final public boolean forks;
        final public boolean executeParallel;

        Executer(boolean forks) {
            this(forks, false);
        }

        Executer(boolean forks, boolean parallel) {
            this.forks = forks;

func path(file string) string {
	return filepath.Join("testdata", file)
}

func check(t *testing.T, file string) {
	t.Run(file, func(t *testing.T) {
		testenv.MustHaveGoBuild(t)
		testenv.MustHaveCGO(t)
		t.Parallel()

		contents, err := os.ReadFile(path(file))
		if err != nil {
			t.Fatal(err)
		}
		var errors []*regexp.Regexp
		for i, line := range bytes.Split(contents, []byte("\n")) {

//go:build unix

package os_test

import (
	"errors"
	"internal/testenv"
	"math"
	. "os"
	"runtime"
	"syscall"
	"testing"
)

func TestErrProcessDone(t *testing.T) {
	testenv.MustHaveGoBuild(t)
	t.Parallel()

	p, err := StartProcess(testenv.GoToolPath(t), []string{"go"}, &ProcAttr{})
	if err != nil {
		t.Fatalf("starting test process: %v", err)
	}
	p.Wait()
	if got := p.Signal(Kill); got != ErrProcessDone {

class ScalaConcurrencyIntegrationTest extends AbstractIntegrationSpec {
    @Rule BlockingHttpServer httpServer = new BlockingHttpServer()

    @Issue("https://github.com/gradle/gradle/issues/14434")
    def "can run tests in parallel with project dependencies"() {
        given:
        httpServer.expectConcurrent(':a:test', ':b:test', ':c:test', ':d:test')
        httpServer.start()

        settingsFile << """
            include 'a', 'b', 'c', 'd'

    CompositeConfiguration compositeBuild

    String daemonMemory
    String compilerMemory
    String testRunnerMemory
    Map<String, String> systemProperties
    String[] featurePreviews
    boolean parallel
    int maxWorkers
    int maxParallelForks
    int testForkEvery
    boolean useTestNG
    Map<String, String> fileToChangeByScenario
}

@Builder(prefix = "with",
    builderStrategy = ExternalStrategy,

import org.gradle.test.fixtures.file.TestFile

class IsolatedProjectsJavaPluginIntegrationTest extends AbstractIsolatedProjectsToolingApiIntegrationTest {

    def "java projects can be configured in a parallel"() {
        given:
        withSomeToolingModelBuilderPluginInBuildSrc()
        settingsFile << """
            include("a")
            include("b")
        """
        javaProject(file("a"))

	}
	// The msan tests require support for the -msan option.
	if !compilerRequiredTsanVersion(goos, goarch) {
		t.Skipf("skipping on %s/%s; compiler version for -tsan option is too old.", goos, goarch)
	}

	t.Parallel()
	requireOvercommit(t)
	config := configure("thread")
	config.skipIfCSanitizerBroken(t)

	mustRun(t, config.goCmd("build", "std"))

	cases := []struct {
		src          string
		needsRuntime bool
	}{

    )
    def "clean assemble with local cache"() {
        given:
        setupTestProject(runner)
        runner.args += "--parallel"
        pushToRemote = false

        when:
        def result = runner.run()

        then:
        result.assertCurrentVersionHasNotRegressed()
    }

    @RunFor([

	// specific algorithm (in this case, sorting) in parallel.
	testing.Benchmark(func(b *testing.B) {
		var compares atomic.Int64
		b.RunParallel(func(pb *testing.PB) {
			for pb.Next() {
				s := []int{5, 4, 3, 2, 1}
				slices.SortFunc(s, func(a, b int) int {
					// Because RunParallel runs the function many
					// times in parallel, we must increment the
					// counter atomically to avoid racing writes.

class ParallelCompilerDaemonIntegrationTest extends AbstractIntegrationSpec {
    @Rule TestResources resources = new TestResources(temporaryFolder)

    def "daemon compiler can handle --parallel"() {
        generateProjects(10, 10, 10)

        args("--parallel")

        expect:
        succeeds("classes")
    }

    private generateProjects(int numProjects, int numJavaSources, int numGroovySources) {
        def settingsText = ""