Bug 318158

Description Kent Tong 2010-06-28 06:28:27 EDT

Build Identifier: I20070621-1340

Please run the Java program in Eclipse. Even though the JVM is terminated (as shown in the process list in the OS) and the shutdown hook is called, the red button will still be on in the Console window, meaning that Eclipse thinks that something is still running. This happens only if the Java program launches another process.

If I end that child process, Eclipse will note the termination. So, somehow Eclipse is waiting for the whole process tree to terminate, not the JVM.

public class Launcher {
	boolean isDone = false;

	public static void main(String[] args) throws InterruptedException {
		new Launcher().run();
	}

	private void run() throws InterruptedException {
		final Runtime runtime = Runtime.getRuntime();
		Thread thread = new Thread(new Runnable() {

			@Override
			public void run() {
				try {
					Process process = runtime.exec("cmd.exe /c start");
					process.getErrorStream().close();
					process.getOutputStream().close();
					System.out.println("Done!");
					isDone = true;
				} catch (Exception e) {
					throw new RuntimeException(e);
				}
			}

		});
		thread.setDaemon(true);
		thread.start();
		runtime.addShutdownHook(new Thread() {
			@Override
			public void run() {
				System.out.println("Shutdown hook called.");
			}
		});
		while (!isDone) {
			Thread.sleep(1000);
		}
		runtime.exit(0);
	}
}

Reproducible: Always

Steps to Reproduce:
1. Run the above program in Eclipse
2. Note the red button is on, even though the shutdown hook is called
3. End the child process (the command prompt), note that the red button is now off.