| # Gaudi Framework, version v21r7 |

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# Guards.h

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    00001 // $Id: Guards.h,v 1.2 2008/04/03 14:40:19 marcocle Exp $
    00002 // ============================================================================
    00003 #ifndef GAUDIKERNEL_GUARDS_H
    00004 #define GAUDIKERNEL_GUARDS_H 1
    00005 // ============================================================================
    00006 // Include files
    00007 // ============================================================================
    00008 // STD & STL
    00009 // ============================================================================
    00010 #include <exception>
    00011 // ============================================================================
    00012 // GaudiKernel
    00013 // ============================================================================
    00014 #include "GaudiKernel/INamedInterface.h"
    00015 #include "GaudiKernel/IExceptionSvc.h"
    00016 #include "GaudiKernel/IAuditor.h"
    00017 // ============================================================================
    00018 // forward declaration
    00019 // ============================================================================
    00020 class GaudiException ;
    00021 // ============================================================================
    00022 namespace Gaudi
    00023 {
    00074   namespace Guards
    00075   {
    00108     class GAUDI_API ExceptionGuard
    00109     {
    00110     public:
    00111       /* constructor form the object/scope, function and log-stream
    00112        * @param obj the object/scope
    00113        * @param fun function to be used
    00114        * @param log output log-stream
    00115        */
    00116       template <class OBJECT, class FUNCTION>
    00117       ExceptionGuard
    00118       ( OBJECT         obj     ,
    00119         FUNCTION       fun     ,
    00120         MsgStream&     log     ,
    00121         IExceptionSvc* svc = 0 )
    00122         : m_sc  ( StatusCode::FAILURE )
    00123       {
    00124         try
    00125         {
    00126           // execute the functor:
    00127           m_sc = fun ( obj ) ;
    00128           // in the case of error try use Exception Service
    00129           if ( 0 != svc && m_sc.isFailure() ) { m_sc = svc->handleErr ( *obj , m_sc ) ; }
    00130         }
    00131         catch ( const GaudiException& e )
    00132         {
    00133           // Use the local handler and then (if possible) the Exception Service
    00134           handle ( e  , log ) ;
    00135           if ( 0 != svc ) { m_sc = svc -> handle ( *obj , e ) ; }
    00136         }
    00137         catch ( const std::exception& e )
    00138         {
    00139           // Use the local handler and then (if possible) the Exception Service
    00140           handle ( e  , log ) ;
    00141           if ( 0 != svc ) { m_sc = svc -> handle ( *obj , e ) ; }
    00142         }
    00143         catch ( ...  )
    00144         {
    00145           // Use the local handler and then (if possible) the Exception Service
    00146           handle (      log ) ;
    00147           if ( 0 != svc ) { m_sc = svc -> handle ( *obj     ) ; }
    00148         }
    00149       }
    00151       ~ExceptionGuard() ;
    00152     public:
    00154       const StatusCode&    code () const { return m_sc   ; }
    00156       operator const StatusCode&() const { return code() ; }
    00157     private:
    00158       // default constructor is disabled
    00159       ExceptionGuard() ;
    00160       // copy constructor is disabled
    00161       ExceptionGuard           ( const ExceptionGuard& ) ;
    00162       // assignment operator is disabled
    00163       ExceptionGuard& operator=( const ExceptionGuard& ) ;
    00164     protected:
    00166       void handle ( const GaudiException& e , MsgStream& s ) ;
    00168       void handle ( const std::exception& e , MsgStream& s ) ;
    00170       void handle (                           MsgStream& s ) ;
    00171     private:
    00172       // status code: result of the function evaluation
    00173       StatusCode m_sc    ;
    00174     } ;
    00175     // ========================================================================
    00218     class GAUDI_API AuditorGuard
    00219     {
    00220     public:
    00222       AuditorGuard ( INamedInterface*                      obj      ,
    00223                      IAuditor*                    svc      ,
    00224                      IAuditor::StandardEventType  evt      ) ;
    00226       AuditorGuard ( INamedInterface*                      obj      ,
    00227                      IAuditor*                    svc      ,
    00228                      IAuditor::CustomEventTypeRef evt      ) ;
    00229
    00231       AuditorGuard ( INamedInterface*                      obj      ,
    00232                      IAuditor*                    svc      ,
    00233                      IAuditor::StandardEventType  evt      ,
    00234                      const StatusCode            &sc       ) ;
    00236       AuditorGuard ( INamedInterface*                      obj      ,
    00237                      IAuditor*                    svc      ,
    00238                      IAuditor::CustomEventTypeRef evt      ,
    00239                      const StatusCode            &sc       ) ;
    00241       AuditorGuard ( const std::string           &name     ,
    00242                      IAuditor*                    svc      ,
    00243                      IAuditor::StandardEventType  evt      ) ;
    00245       AuditorGuard ( const std::string           &name     ,
    00246                      IAuditor*                    svc      ,
    00247                      IAuditor::CustomEventTypeRef evt      ) ;
    00248
    00250       AuditorGuard ( const std::string           &name     ,
    00251                      IAuditor*                    svc      ,
    00252                      IAuditor::StandardEventType  evt      ,
    00253                      const StatusCode            &sc       ) ;
    00255       AuditorGuard ( const std::string           &name     ,
    00256                      IAuditor*                    svc      ,
    00257                      IAuditor::CustomEventTypeRef evt      ,
    00258                      const StatusCode            &sc       ) ;
    00259
    00261       ~AuditorGuard() ;
    00262     public:
    00263       // get the status code
    00264       const StatusCode &code () const { return *m_sc ; }
    00265     private:
    00266       // the default constructor is disabled
    00267       AuditorGuard () ;
    00268       // the copy constructor is disabled
    00269       AuditorGuard           ( const AuditorGuard& right ) ;
    00270       // assignement operator is disabled
    00271       AuditorGuard& operator=( const AuditorGuard& right ) ;
    00272     private :
    00274       INamedInterface*                     m_obj   ;
    00276       std::string                 m_objName;
    00278       IAuditor*                   m_svc   ;
    00280       IAuditor::StandardEventType m_evt   ;
    00282       IAuditor::CustomEventType   m_cevt  ;
    00286       const StatusCode           *m_sc    ;
    00288       bool                        m_customEvtType;
    00289
    00290       inline void i_before() {
    00291         if ( 0 != m_svc ) { // if the service is not available, we cannot do anything
    00292           m_svc->addRef(); // increase the reference counting
    00293           if (0 != m_obj) {
    00294             if (m_customEvtType) {
    00295               m_svc->before(m_cevt,m_obj);
    00296             } else {
    00297               m_svc->before(m_evt,m_obj);
    00298             }
    00299           } else { // use object name
    00300             if (m_customEvtType) {
    00301               m_svc->before(m_cevt,m_objName);
    00302             } else {
    00303               m_svc->before(m_evt,m_objName);
    00304             }
    00305           }
    00306         }
    00307       }
    00308
    00309       inline void i_after() {
    00310         if ( 0 != m_svc ) { // if the service is not available, we cannot do anything
    00311           if (0 != m_obj) {
    00312             if (m_customEvtType) {
    00313               if (0 != m_sc) {
    00314                 m_svc->after(m_cevt,m_obj,*m_sc);
    00315               } else {
    00316                 m_svc->after(m_cevt,m_obj);
    00317               }
    00318             } else {
    00319               if (0 != m_sc) {
    00320                 m_svc->after(m_evt,m_obj,*m_sc);
    00321               } else {
    00322                 m_svc->after(m_evt,m_obj);
    00323               }
    00324             }
    00325           } else { // use object name
    00326             if (m_customEvtType) {
    00327               if (0 != m_sc) {
    00328                 m_svc->after(m_cevt,m_objName,*m_sc);
    00329               } else {
    00330                 m_svc->after(m_cevt,m_objName);
    00331               }
    00332             } else {
    00333               if (0 != m_sc) {
    00334                 m_svc->after(m_evt,m_objName,*m_sc);
    00335               } else {
    00336                 m_svc->after(m_evt,m_objName);
    00337               }
    00338             }
    00339           }
    00340           m_svc->release(); // we do not need the service anymore
    00341           m_svc = 0 ;
    00342         }
    00343       }
    00344     } ;
    00345   } // end of namespace Gaudi::Guards
    00346 } //end of namespace Gaudi
    00347
    00348
    00349 // ============================================================================
    00350 // The END
    00351 // ============================================================================
    00352 #endif // GAUDIKERNEL_GUARDS_H
    00353 // ============================================================================