def operation1 = Spy(TestRunnableBuildOperation)
        def operation2 = Spy(TestRunnableBuildOperation)
        def operation3 = Spy(TestRunnableBuildOperation)
        def parentId
        def child1Id
        def child2Id

        when:
        operationRunner.run(operation1)

        then:
        1 * listener.start(_, _) >> { BuildOperationDescriptor descriptor, BuildOperationState operation ->

                require(lookupParent != null) {
                    "Cannot find parent $parentId for child scope $childId"
                }
                lookupParent
            }

            val child = ClassLoaderScopeSpec(parent, childId.name, origin)
            scopeSpecs[childId] = child
        }
    }

                    case EDGE:
                        long parentId = decoder.readSmallLong();
                        long childId = decoder.readSmallLong();
                        DefaultResolvedDependency parent = allDependencies.get(parentId);
                        DefaultResolvedDependency child = allDependencies.get(childId);
                        if (parent == null) {

 * @see ClassLoaderScope
 */
@EventScope(Scope.UserHome.class)
public interface ClassLoaderScopeRegistryListener {

    void childScopeCreated(ClassLoaderScopeId parentId, ClassLoaderScopeId childId, @Nullable ClassLoaderScopeOrigin origin);

    void classloaderCreated(ClassLoaderScopeId scopeId, ClassLoaderId classLoaderId, ClassLoader classLoader, ClassPath classPath, @Nullable HashCode implementationHash);

        try {
            scripts.clear();
        } finally {
            lock.unlock();
        }
    }

    @Override
    public void childScopeCreated(ClassLoaderScopeId parentId, ClassLoaderScopeId childId, @javax.annotation.Nullable ClassLoaderScopeOrigin origin) {
        if (origin instanceof ClassLoaderScopeOrigin.Script) {
            ClassLoaderScopeOrigin.Script scriptOrigin = (ClassLoaderScopeOrigin.Script) origin;

// cloneArgs holds arguments for clone3 Linux syscall.
type cloneArgs struct {
	flags      uint64 // Flags bit mask
	pidFD      uint64 // Where to store PID file descriptor (int *)
	childTID   uint64 // Where to store child TID, in child's memory (pid_t *)
	parentTID  uint64 // Where to store child TID, in parent's memory (pid_t *)
	exitSignal uint64 // Signal to deliver to parent on child termination