PosixSignalDispatcher.h

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//
// C++ Interface: %{MODULE}
//
// Description:
//
//
// Author: %{AUTHOR} <%{EMAIL}>, (C) %{YEAR}
//
// Copyright: See COPYING file that comes with this distribution
//
//
#ifndef _PosixSignalDispatcher_h_
#define _PosixSignalDispatcher_h_

#include <stdexcept>

/*
 * Forward declarations.
 */
class PosixSignalHandler ;

class PosixSignalDispatcher
{
public:
    static PosixSignalDispatcher& Instance() ;

    class CannotAttachHandler : public std::runtime_error
    {
    public:
        CannotAttachHandler( const std::string& whatArg ) :
            runtime_error(whatArg) { }
    } ;

    class CannotDetachHandler : public std::runtime_error
    {
    public:
        CannotDetachHandler( const std::string& whatArg ) :
            runtime_error(whatArg) { }
    } ;

    void AttachHandler( const int           posixSignalNumber,
                        PosixSignalHandler& signalHandler )
        throw( CannotAttachHandler ) ;

    void DetachHandler( const int                 posixSignalNumber,
                        const PosixSignalHandler& signalHandler )
        throw( CannotDetachHandler,
               std::logic_error ) ;
private:
    PosixSignalDispatcher() ;

    ~PosixSignalDispatcher() ;

    PosixSignalDispatcher( const PosixSignalDispatcher& otherInstance ) ;

    const PosixSignalDispatcher&
    operator=( const PosixSignalDispatcher& otherInstance ) ;
} ;

#endif