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A cancellation signal with a single slot.
class cancellation_signal
| Name | Description | 
|---|---|
| cancellation_signal [constructor] | |
| Emits the signal and causes invocation of the slot's handler, if any. | |
| Returns the single slot associated with the signal. | |
| ~cancellation_signal [destructor] | 
        Header: boost/asio/cancellation_signal.hpp
      
        Convenience header: boost/asio.hpp