id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	branch	branch_author	launchpad_bug
5153	Add an equivalent to `isInIOThread` as a reactor method	exarkun		"`twisted.python.threadable.isInIOThread` is usable to determine if the code calling it is executing in the same thread as the reactor.  This may be useful for making certain decisions (though Twisted doesn't currently use it anywhere outside of the test suite).

Notice the problem with that, however: '''the''' reactor.  This API gets in the way of supporting multiple reactors, since its behavior no longer makes any sense once you have reactors running in more than one thread.

It could be replaced by a new reactor method which determines if the calling code is running in the same thread as the reactor the method is called on is running.  This probably makes sense as a method on `IReactorThreads`, if we're allowed to add new methods to reactor interfaces (I forget if we are or not).

Once this is in place, we can deprecate `twisted.python.threadable.isInIOThread` and point at the reactor method to replace it.
"	enhancement	new	low		core