pool[addr] = req selector.register(client_socket, EVENT_READ, req) def echo_server(address): sock = socket(AF_INET, SOCK_STREAM) sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) sock.bind(address) sock.listen(5) selector.register(sock, EVENT_READ, recv_client) try: while True: events =...
@Import(AsyncConfigurationSelector.class)public @interface EnableAsync {}复制代码点开AsyncConfigurationSelector，可以看到此次引入的是ProxyAsyncConfiguration配置类 public String[] selectImports(AdviceMode adviceMode) { switch (adviceMode) { case PROXY: return new String[] {ProxyAsyncConfiguration.c...
@Target(ElementType.TYPE)@Retention(RetentionPolicy.RUNTIME)@Documented// 这里是重点,导入了一个ImportSelector@Import(AsyncConfigurationSelector.class)public@interfaceEnableAsync {// 这个配置可以让程序员配置需要被检查的注解,默认情况下检查的就是@Async注解Class<?extendsAnnotation> annotation()defaultAnnotation....
其中,SelectSelector对应select()机制,EpollSelector对应epoll()机制,而DefaultSelector对应当前操作系统支持的效率最高的机制。 下面一起来看看如何使用selectors库。首先,创建一个选择器: sel = selectors.DefaultSelector() 然后调用register()方法,传入 socket 、监听的事件(socket可读写)以及辅加数据,注册监听: sel...
@Target(ElementType.TYPE)@Retention(RetentionPolicy.RUNTIME)@Documented// 这里是重点,导入了一个ImportSelector@Import(AsyncConfigurationSelector.class)public@interfaceEnableAsync{// 这个配置可以让程序员配置需要被检查的注解,默认情况下检查的就是@Async注解Class<?extendsAnnotation>annotation()defaultAnnotation.clas...
selector.register(client_socket, EVENT_READ, req)defecho_server(address): sock=socket(AF_INET, SOCK_STREAM) sock.setsockopt(SOL_SOCKET, SO_REUSEADDR,1) sock.bind(address) sock.listen(5) selector.register(sock, EVENT_READ, recv_client)try:whileTrue: ...
Instead of just returning a value from a recoil selector, you can return any promise, which means that you can do asynchronous functions in recoil selectors (this is a little like a redux thunk). The huge bonus is that you don't have to do anything different when actually calling the se...
但是在步骤12时messenger由于@Async注解被AsyncAnnotationBeanPostProcessor后置处理器进行代理增强,且与二级缓存中的messenger代理增强不相等,若将步骤12产生的messenger代理增强作为最终版本,则ServiceA的messenger不是最终版本,此时在spring容器中存在messenger的两个版本。 二、源码分析 接下来针对关键步骤进行源码分析,需要...
一个是父类AdviceModeImportSelector 二是导入配置类ProxyAsyncConfiguration 大家在源码分析的时候这样去看源码,当你打开一个类的时候,里面有很多个方法,你不知道你应该从哪个方法看起,你第一时间可以先去看继承关系,就比如这AsyncConfigurationSelector类,他继承了AdviceModeImportSelector,但AdviceModeImportSelector其实...
上面这个注解做的最重要的事情就是导入了一个AsyncConfigurationSelector,这个类的源码如下: public class AsyncConfigurationSelector extends AdviceModeImportSelector<EnableAsync> { private static final String ASYNC_EXECUTION_ASPECT_CONFIGURATION_CLASS_NAME = ...