btcsignals Namespace Reference

btcsignals is a simple mechanism for signaling events to multiple subscribers. More...

Namespaces
namespace	detail

Classes
class	any_of
	A combiner, which checks if at least one callback returned true. More...
class	connection
class	null_value
	The default combiner, which only returns void. More...
class	scoped_connection
class	signal

Detailed Description

btcsignals is a simple mechanism for signaling events to multiple subscribers.

It is api-compatible with a minimal subset of boost::signals2.

Rather than using a custom slot type, and the features/complexity that they imply, std::function is used to store the callbacks. There is no automatic tracking of objects the callbacks refer to, so callers need to disconnect callbacks before those objects are destroyed.

Like boost::signals2, disconnecting a connection destroys its callback object, or if the callback is running at the time, destroys it when the call returns. Callbacks that are never disconnected are destroyed with the signal.

All usage is thread-safe except for interacting with a connection while copying/moving it on another thread.