if fetcher != nil {
		p, src, err = fetcher.Fetch(source, duration, timeout)
		if err != nil {
			return
		}
	}
	if err != nil || p == nil {
		// Fetch the profile over HTTP or from a file.
		p, src, err = fetch(source, duration, timeout, ui, tr)
		if err != nil {
			return
		}
	}

	if err = p.CheckValid(); err != nil {

	"istio.io/istio/pkg/slices"
)

func FetchOne[T any](ctx HandlerContext, c Collection[T], opts ...FetchOption) *T {
	res := Fetch[T](ctx, c, opts...)
	switch len(res) {
	case 0:
		return nil
	case 1:
		return &res[0]
	default:
		panic("FetchOne found for more than 1 item")
	}
}

func Fetch[T any](ctx HandlerContext, cc Collection[T], opts ...FetchOption) []T {
	h := ctx.(registerDependency)
	c := cc.(internalCollection[T])

	// so that pass 2 won't stomp on an fd it needs later.
	if pipe < nextfd {
		_, _, err1 = RawSyscall(SYS_FCNTL, uintptr(pipe), F_DUP2FD_CLOEXEC, uintptr(nextfd))
		if err1 != 0 {
			goto childerror
		}
		pipe = nextfd
		nextfd++
	}
	for i = 0; i < len(fd); i++ {
		if fd[i] >= 0 && fd[i] < i {
			if nextfd == pipe { // don't stomp on pipe
				nextfd++
			}

		pipe = nextfd
		nextfd++
	}
	for i = 0; i < len(fd); i++ {
		if fd[i] >= 0 && fd[i] < i {
			if nextfd == pipe { // don't stomp on pipe
				nextfd++
			}
			switch runtime.GOOS {
			case "illumos", "solaris":
				_, err1 = fcntl1(uintptr(fd[i]), _F_DUP2FD_CLOEXEC, uintptr(nextfd))
			default:
				_, err1 = dup2child(uintptr(fd[i]), uintptr(nextfd))
				if err1 != 0 {
					goto childerror
				}

			if err1 != 0 {
				goto childerror
			}
			_, _, err1 = RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)
		}
		if err1 != 0 {
			goto childerror
		}
		pipe = nextfd
		nextfd++
	}
	for i = 0; i < len(fd); i++ {
		if fd[i] >= 0 && fd[i] < i {
			if nextfd == pipe { // don't stomp on pipe
				nextfd++
			}
			if runtime.GOOS == "netbsd" || (runtime.GOOS == "openbsd" && runtime.GOARCH == "mips64") {

			// Zip may have partially written to f before failing.
			// (Perhaps the server crashed while sending the file?)
			// Since we allow fallback on error in some cases, we need to fix up the
			// file to be empty again for the next attempt.
			if _, err := f.Seek(0, io.SeekStart); err != nil {
				unrecoverableErr = err
				return err
			}
			if err := f.Truncate(0); err != nil {
				unrecoverableErr = err
				return err
			}
		}

public class DefaultBuildOperationIdFactory implements BuildOperationIdFactory {
    public static final long ROOT_BUILD_OPERATION_ID_VALUE = 1L;

    private final AtomicLong nextId = new AtomicLong(ROOT_BUILD_OPERATION_ID_VALUE);

    @Override
    public long nextId() {
        return nextId.getAndIncrement();
    }

package org.gradle.internal.id;

import java.util.concurrent.atomic.AtomicLong;

public class LongIdGenerator implements IdGenerator<Long> {
    private final AtomicLong nextId = new AtomicLong(1);

    @Override
    public Long generateId() {
        return nextId.getAndIncrement();
    }

        ) {
            int id = nextId++;
            return new ArtifactsForNode(id, new VariantResolvingArtifactSet(variantResolver, component, variant, dependency, graphVariantSelector, consumerSchema));
        }

        return artifactsByNodeId.computeIfAbsent(toNode.getNodeId(), (LongFunction<ArtifactsForNode>) value -> {
            int id = nextId++;

@ServiceScope(Scope.BuildTree.class)
public class ComponentIdGenerator {
    private final AtomicLong nextId = new AtomicLong();

    public long nextComponentId() {
        return nextId.getAndIncrement();
    }

    public long nextVariantId() {
        return nextId.getAndIncrement();
    }

    public long nextGraphNodeId() {
        return nextId.getAndIncrement();
    }