SystemException Class Reference

This is the base class for exceptions that depend on system events, like exceptions on file or network I/O, on database access and so on. More...

#include <Exception.h>

Inheritance diagram for SystemException:

ContextException Exception FileException List of all members.

Public Member Functions

 SystemException (int code, const std::string &context) throw ()
virtual const char * type () const throw ()
 Get a string tag identifying the exception type.
virtual int code () const throw ()
 Get the system error code associated to the exception.
virtual std::string system_desc () const throw ()
 Get the description of the error code.
virtual std::string desc () const throw ()
 Get a string describing what happened that threw the exception.

Protected Attributes

int _code

Detailed Description

This is the base class for exceptions that depend on system events, like exceptions on file or network I/O, on database access and so on.

SystemExceptions introduces the keeping of an error code with an associated string description, and by defaults provides the textual description for Unix errno error codes. The exception context should be phrased like "doing X".

Example:

        const char* fname = "foo.bar";
        if ((fd = open(fname, O_RDONLY)) == -1)
            // Should not throw SystemException, but a more specialized derived
            // class like FileException
            throw SystemException(errno, stringf::fmt("opening %s read-only", fname));


Constructor & Destructor Documentation

SystemException::SystemException int  code,
const std::string &  context
throw () [inline]
 


Member Function Documentation

virtual int SystemException::code  )  const throw () [inline, virtual]
 

Get the system error code associated to the exception.

virtual std::string SystemException::desc  )  const throw () [inline, virtual]
 

Get a string describing what happened that threw the exception.

Reimplemented from ContextException.

string SystemException::system_desc  )  const throw () [virtual]
 

Get the description of the error code.

virtual const char* SystemException::type  )  const throw () [inline, virtual]
 

Get a string tag identifying the exception type.

Reimplemented from ContextException.

Reimplemented in FileException.


Member Data Documentation

int SystemException::_code [protected]
 


The documentation for this class was generated from the following files:
Generated on Wed Nov 30 18:18:30 2005 for libbuffy by  doxygen 1.4.5