java 停止执行 Groovy 脚本
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Stopping the execution of a Groovy script
提问by Clueless
I am embeding Groovy runtime in my code and I would like to have the ability to interrupt it. I don't have control of the scripts that are going to run. I read about groovy.transform.ThreadInterrupt to handle thread interruptions but for some reason this code below isn't working as intended. It's actually waiting 10000 ms instead of the 1000 where it should get interrupted.
我在我的代码中嵌入了 Groovy 运行时，我希望能够中断它。我无法控制将要运行的脚本。我阅读了关于 groovy.transform.ThreadInterrupt 来处理线程中断的信息，但由于某种原因，下面的代码没有按预期工作。它实际上等待了 10000 毫秒，而不是它应该被中断的 1000 毫秒。
Any ideas? Thank you.
有任何想法吗？谢谢你。
import groovy.lang.Binding;
import groovy.lang.GroovyShell;
import groovy.transform.ThreadInterrupt;
import org.codehaus.groovy.control.CompilerConfiguration;
import org.codehaus.groovy.control.customizers.ASTTransformationCustomizer;
public class GroovyTest extends Thread {
private Binding binding;
private GroovyShell shell;
public GroovyTest() {
CompilerConfiguration compilerConfig = new CompilerConfiguration();
compilerConfig.addCompilationCustomizers(
new ASTTransformationCustomizer(ThreadInterrupt.class));
binding = new Binding();
shell = new GroovyShell(this.getClass().getClassLoader(), binding, compilerConfig);
}
@Override
public void run() {
System.out.println("Started");
shell.run("for(int i = 0; i < 10; i++) {sleep(1000)}", "test", new String[] {});
System.out.println("Finished");
}
public static void main(String args[]) throws InterruptedException {
GroovyTest test = new GroovyTest();
test.start();
System.out.println("Sleeping: " + System.currentTimeMillis());
Thread.sleep(1000);
System.out.println("Interrupting: " + System.currentTimeMillis());
test.interrupt();
test.join();
System.out.println("Interrupted?: " + System.currentTimeMillis());
}
}
回答by Clueless
Answering my own question. Groovy's static method sleep doesn't interrupt even if you try to if there isn't a closure. Pretty weird default if you ask me. Recomended way is to call Thread.sleep(ms)
回答我自己的问题。即使没有闭包，Groovy 的静态方法 sleep 也不会中断。如果你问我，很奇怪的默认设置。推荐的方法是调用 Thread.sleep(ms)
private static void sleepImpl(long millis, Closure closure) {
long start = System.currentTimeMillis();
long rest = millis;
long current;
while (rest > 0) {
try {
Thread.sleep(rest);
rest = 0;
} catch (InterruptedException e) {
if (closure != null) {
if (DefaultTypeTransformation.castToBoolean(closure.call(e))) {
return;
}
}
current = System.currentTimeMillis(); // compensate for closure's time
rest = millis + start - current;
}
}
}
