Gradle源码八续

补充上次的runBuildInProcessbuilder() ->new 了一个ServiceRegistryBuilderbuild()->new 一个前文多次提到的DefaultServiceRegistry, 返回,同时把传入的GlobalScopeServices类attach了上去找configure方法的时候,会找到例如void configure(ServiceRegistration registration, ClassLoaderRegistry classLoaderRegistry)ServiceRegistryBuild.java    public ServiceRegistry build() {        DefaultServiceRegistry registry = new DefaultServiceRegistry(displayName, parents);        for (Object provider : providers) {            registry.addProvider(provider);        }        return registry;    }    这个provider就是GlobalScopeServicesDefaultServiceRegistry.java    private void findProviderMethods(Object target) {        Set<String> methods = new HashSet<String>();        for (Class<?> type = target.getClass(); type != Object.class; type = type.getSuperclass()) {            findDecoratorMethods(target, type, methods, ownServices);            findFactoryMethods(target, type, methods, ownServices);        }        findConfigureMethod(target);    }    //findConfigureMethod(target);   这个target也是GlobalScopeServices    在private void findConfigureMethod(Object target)中    invoke(method, target, params);    //method就是void org.gradle.internal.service.scopes.GlobalScopeServices.configure(org.gradle.internal.service.ServiceRegistration,org.gradle.initialization.ClassLoaderRegistry)    //target => org.gradle.internal.service.scopes.GlobalScopeServices@1c9eaf8    //params[0]=>org.gradle.internal.service.DefaultServiceRegistry$1,也就是ServiceRegistration, 它是一个接口定义,在    //DefaultServiceRegistry.java中重新定义    private ServiceRegistration newRegistration() {        return new ServiceRegistration(){            public <T> void add(Class<T> serviceType, T serviceInstance) {                DefaultServiceRegistry.this.add(serviceType, serviceInstance);            }            public void add(Class<?> serviceType) {                ownServices.add(new ConstructorService(serviceType));            }            public void addProvider(Object provider) {                DefaultServiceRegistry.this.addProvider(provider);            }        };    }    而在GlobalScopeService.java中 (从上面的invoke调入)    void configure(ServiceRegistration registration, ClassLoaderRegistry classLoaderRegistry) {        final List<PluginServiceRegistry> pluginServiceFactories = new ServiceLocator(classLoaderRegistry.getRuntimeClassLoader(), classLoaderRegistry.getPluginsClassLoader()).getAll(PluginServiceRegistry.class);        for (PluginServiceRegistry pluginServiceRegistry : pluginServiceFactories) {            registration.add(PluginServiceRegistry.class, pluginServiceRegistry);            pluginServiceRegistry.registerGlobalServices(registration);        }    }    它会走进override的registration.add , 它会把item加到DefaultServiceRegistry.ownServices列表中    这也是ownService列表里面items的来源之一.    堆栈如图: