Doesn't work on Mac OS (Re: Making System.in interruptible, how?)

From:

Jan Burse <janburse@fastmail.fm>

Newsgroups:

comp.lang.java.programmer

Date:

Fri, 09 Mar 2012 01:34:06 +0100

Message-ID:

<jjbj5v$cu9$1@news.albasani.net>

Dear All,

Just checking it on Mac OS. The exception is different
between version 1.6 and 1.7 of the JDK:

java -jar interpreter.jar
test1: abc
test2: Exception in thread "main" java.nio.channels.ClosedChannelException
    at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:88)
    at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:132)

/Library/Java/JavaVirtualMachines/1.7.0u.jdk/Contents/Home/bin/java
test1:
Exception in thread "main" java.nio.channels.ClosedByInterruptException
    at
java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202)
    at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:148)

And there is a glitch, the interrupt is only recognized
after pressing return.

Jan Burse schrieb:

Maybe I can get the channel without reflection from
the file descriptor? Actually this is possible:

FileInputStream fi = new FileInputStream(FileDescriptor.in);
final Thread thread = Thread.currentThread();
new Thread() {
public void run() {
try {
Thread.sleep(2000);
} catch (InterruptedException x) {
throw new RuntimeException(x);
}
thread.interrupt();
}
}.start();
System.out.print("test: ");
System.out.flush();
ByteBuffer buf = ByteBuffer.allocate(1024);
try {
fi.getChannel().read(buf);
} catch (IOException x) {
throw new RuntimeException(x);
}

If run it I get:

test:
...
Caused by: java.nio.channels.ClosedByInterruptException
at
java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202)

at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:148)
... 5 more

Bye