Archie Cobbs wrote:
Paulex Yang wrote:
OK, this is nice and simple.. installing an interrupt action is a clean
and Java-centric way to make the handling of interrupts explicit. It
may
be technically unnecessary (if POSIX signals were available) but has
the advantage of being less tied to the O/S and VM internals.
Great, so may I assume you agree with the VMI modification to add
Thread.setInterruptAction()?
Yes, looks good.
Great! So if no one objects, I will raise JIRA and provide the patch for
AbstractInterruptibleChannel, but I have no idea how to patch the
VMI/kernel class(any committer kindly help?).
I'm still curious what mechanism will be used to wakeup blocked threads
though.
I thought I've described the solution in my first post triggering this
thread, but I'm sorry if it's confusable. Basically the thread is waken
up by closing the I/O channel in another thread. Please see below for
details:
The AbstractInterruptibleChannel's begin()/end() is probably like:
public void begin(){
interruptActionSetter.execute(Thread.currentThread(), new
Object[]{new Runnable(){
public void run(){
AbstractInterruptibleChannel.this.close();
}
}});
}
public void end(boolean complete) throws XXXXException{
interruptActionSetter.execute(Thread.currentThread(), new
Object[]{null});
if(interrupted) blabla
else if(closed && !completed) blabla
else blabla
}
And when Thread.interrupt() executes the interruptAction and closes the
channel, generally the blocking I/O operation will return with an error
code, and if Harmony user implements a subclass of
AbstractInterruptibleChannel, he is required by spec to implement
implCloseChannel(which is invoked by close()) in similar way, in both
cases, the thread is waken up as by product.
The blocking select is waken up in similar way by invoke wakeup() in
interruptAction.
-Archie
__________________________________________________________________________
Archie Cobbs * CTO, Awarix *
http://www.awarix.com
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--
Paulex Yang
China Software Development Lab
IBM
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