protected override IConsole CreateConsole(ScriptEngine engine, CommandLine commandLine, ConsoleOptions options)
{
IConsole console = base.CreateConsole(engine, commandLine, options);
Thread mainThread = Thread.CurrentThread;
RubyContext context = (RubyContext)HostingHelpers.GetLanguageContext(engine);
context.InterruptSignalHandler = delegate() { RubyUtils.RaiseAsyncException(mainThread, new Interrupt()); };
((BasicConsole)console).ConsoleCancelEventHandler = delegate(object sender, ConsoleCancelEventArgs e) {
OnCancelKey(sender, e, context, mainThread);
};
return(console);
}
private static void OnCancelKey(object sender, ConsoleCancelEventArgs ev, RubyContext context, Thread mainThread)
{
if (ev.SpecialKey == ConsoleSpecialKey.ControlC)
{
ev.Cancel = true;
Action handler = context.InterruptSignalHandler;
if (handler != null)
{
try {
handler();
} catch (Exception e) {
RubyUtils.RaiseAsyncException(mainThread, e);
}
}
}
}
private static void RaiseAsyncException(Thread thread, Exception exception)
{
RubyThreadStatus status = GetStatus(thread);
// rethrow semantics, preserves the backtrace associated with the exception:
RubyUtils.RaiseAsyncException(thread, exception);
if (status == RubyThreadStatus.Sleeping)
{
// Thread.Abort can interrupt a thread with ThreadState.WaitSleepJoin. However, Thread.Abort
// is deferred while the thread is in a catch block. If there is a Kernel.sleep in a catch block,
// then that sleep will not be interrupted.
// TODO: We should call Run to nudge the thread if its CurrentException is not-null, and
// ThreadOps.Stop should have a checkpoint to see whether an async exception needs to be thrown
// Run(thread);
}
}