Norman Feske 13d4108fea Unify 'Signal_dispatcher' interfaces ... Several users of the signal API used custom convenience classes to invoke signal-handling functions on the reception of incoming signals. The 'Signal_dispatcher' pattern turned out to be particularly useful. To avoid the duplication of this code across the code base, this patch adds the interface to 'base/signal.h'. Furthermore, the patch changes the 'Signal::num()' return type from int to unsigned because negative numbers are meaningless here. Fixes #511		2013-01-10 21:09:14 +01:00
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drivers/oss	Unify 'Signal_dispatcher' interfaces	2013-01-10 21:09:14 +01:00