If you're using a signal from two threads concurrently, you will most likely see random crashes and other bad behavior. Signals keep a lot of state, even when they are being invoked, so just about anything can trip it up.

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I am curious because, I am wondering in my ignorance, what are the components of the boost::signal library and how they can be multi-thread capable. This ofcourse is answered by reviewing the code.

Ideally, a thread-safe Signals would allow you to invoke in several threads at one, disconnect signals in several threads concurrently, etc.

Doug

Just to make sure I understand, this is only a problem if you are using the *same* signal from two threads concurrently. This is what I've thought, but the phrase *If you're using a signal* makes me want to check. Not trying to nit-pick, just trying to make sure there isn't some situation I don't understand. Thanks, Frank