Boost C++ Libraries

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This is an older version of Boost and was released in 2022. The current version is 1.90.0.

Class template exception_handler

Class template exception_handler

boost::log::exception_handler

Synopsis

// In header: <boost/log/utility/exception_handler.hpp>

template<typename SequenceT, typename HandlerT> 
class exception_handler {
public:
  // types
  typedef HandlerT handler_type;  // The exception handler type. 
  typedef void     result_type;   // The handler result type. 

  // construct/copy/destruct
  explicit exception_handler(handler_type const &);

  // public member functions
  void operator()() const;
};

Description

An exception handler functional object. The handler aggregates a user-defined functional object that will be called when one of the specified exception types is caught.

`exception_handler` public construct/copy/destruct

```
explicit exception_handler(handler_type const & handler);
```
Initializing constructor. Creates an exception handler with the specified function object that will receive the exception.

`exception_handler` public member functions

```
void operator()() const;
```
Exception launcher. Rethrows the current exception in order to detect its type and pass it to the aggregated function object.

Note

Must be called from within a catch statement.