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Diffstat (limited to 'ace/CORBA_macros.h')
| -rw-r--r-- | ace/CORBA_macros.h | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/ace/CORBA_macros.h b/ace/CORBA_macros.h deleted file mode 100644 index bbaefe15128..00000000000 --- a/ace/CORBA_macros.h +++ /dev/null @@ -1,288 +0,0 @@ -// $Id$ - -// ============================================================================ -// -// = LIBRARY -// ace -// -// = FILENAME -// CORBA_macros.h -// -// = DESCRIPTION -// Writing code that is portable between platforms with or without -// native C++ exceptions is hard. The following macros offer some -// help on this task, mostly oriented to making the ORB code and the -// IDL generated code portable. -// -// = AUTHOR -// Nanbor Wang <nanbor@cs.wustl.edu> -// Based on the original <tao/try_macros.h> implementation by -// Aniruddha Gokhale <gokhale@sahyadri.research.bell-labs.com> -// Carlos O'Ryan <coryan@cs.wustl.edu>, et al. -// ============================================================================ - -// Macros for handling CORBA exceptions. - -// All these macros assume the CORBA::Environment variable used to pass -// in/out the exception is call ACE_TRY_ENV. Below is the name we use -// in TAO (The ACE ORB.) Most other ORB's have their own naming -// convention. You can redefine ACE_TRY_ENV to change the default name -// ACE_ADOPT_CORBA_ENV allows the use of non-standard name within a -// scope. -#if !defined (ACE_TRY_ENV) -# define ACE_TRY_ENV _ACE_CORBA_Environment_variable -#endif /* ACE_TRY_ENV */ - -// By default, if the compiler support native exception handling, assume -// CORBA also support native exception handling. But it can be disabled -// by defining ACE_CORBA_HAS_EXCEPTIONS=0. -// If the compiler does not support exceptions handling, make sure native -// exception handling is disabled. -#if defined (ACE_HAS_EXCEPTIONS) -# if defined (ACE_CORBA_HAS_EXCEPTIONS) -# if (ACE_CORBA_HAS_EXCEPTIONS == 0) -# undef ACE_CORBA_HAS_EXCEPTIONS -# endif /* ACE_CORBA_HAS_EXCEPTIONS == 0 */ -# else /* !ACE_CORBA_HAS_EXCEPTIONS */ -# define ACE_CORBA_HAS_EXCEPTIONS -# endif /* ACE_CORBA_HAS_EXCEPTIONS */ -#else -# if defined (ACE_CORBA_HAS_EXCEPTIONS) -# undef ACE_CORBA_HAS_EXCEPTIONS -# endif /* ACE_CORBA_HAS_EXCEPTIONS */ -#endif /* ACE_HAS_EXCEPTIONS */ - -#if defined (ACE_CORBA_HAS_EXCEPTIONS) -// ----------------------------------------------------------------- -# define ACE_ADOPT_CORBA_ENV(ENV) ACE_UNUSED_ARG(ENV) - -// No need to check. Native exceptions handle the control -// flow automatically when an exception occurs. -# define ACE_CHECK -// Used then the function requires a return value. -# define ACE_CHECK_RETURN(RETV) - -// Throwing an exception is easy. These two macros should _NOT_ be -// used within try blocks. -# define ACE_THROW(EXCEPTION) throw EXCEPTION -// Throwing an exception when the function reqires a return value. -# if defined (WIN32) -# define ACE_THROW_RETURN(EXCEPTION, RETV) \ - do \ - { \ - throw EXCEPTION; \ - return RETV; \ - } while (0) -# else /* WIN32 */ -# define ACE_THROW_RETURN(EXCEPTION) throw EXCEPTION -# endif /* WIN32 */ - -// For compilers with native exceptions, we can simply use -// try to try. ;-) do {} while (0) is required to avoid -// compilation warnings. -# define ACE_TRY \ - do \ - { \ - try \ - { -# define ACE_TRY_NEW_ENV \ - do \ - { \ - try \ - { -# define ACE_TRY_EX(LABEL) \ - do \ - { \ - try \ - { - -// No need to check for exceptions within try block for compilers with -// native exceptions. -# define ACE_TRY_CHECK -# define ACE_TRY_CHECK_EX(LABEL) - -// Likewise, throwing exceptions within try blocks is easy. -# define ACE_TRY_THROW(EXCEPTION) throw EXCEPTION -# define ACE_TRY_THROW_EX(EXCEPTION,LABEL) throw EXCEPTION - -// Same thing for catch. -# define ACE_CATCH(EXCEPTION,VAR) \ - } \ - catch (EXCEPTION & VAR) \ - { -# define ACE_CATCHANY \ - ACE_CATCH(CORBA::Exception, ex) \ - ACE_UNUSED_ARG (ex); -# define ACE_CATCHALL \ - } \ - catch (...) \ - { - -// Rethrowing the exception from catch blocks. -# define ACE_RETHROW throw - -// Close the catch block. -# define ACE_ENDTRY \ - } \ - } while (0) - -#else /* ! ACE_CORBA_HAS_EXCEPTIONS */ -// ----------------------------------------------------------------- -// To handle compilers without native exceptions, things get a bit -// hairy. Exceptions are simulated using CORBA::Environment. -// The trick here is to make sure the flow-of-control can simulate -// the case when native exceptions occur... - -# define ACE_ADOPT_CORBA_ENV(ENV) CORBA::Environment &ACE_TRY_ENV = ENV - -// Follow every statement that could throw exceptions with ACE_CHECK -// or ACE_CHECK_ENV. These two macros should _NOT_ be used within -// try blocks. Use ACE_TRY_CHECK or ACE_TRY_CHECK_EX instead. -# define ACE_CHECK \ - if (ACE_TRY_ENV . exception () != 0) \ - return -// When function requires a return value -# define ACE_CHECK_RETURN(RETV) \ - if (ACE_TRY_ENV . exception () != 0) \ - return RETV - -// Throwing exceptions will inevitably cause an return from the current -// function. These two macros should _NOT_ be used within try blocks. -// Use ACE_TRY_THROW or ACE_TRY_THROW_EX instead. -# define ACE_THROW(EXCEPTION) \ - do \ - { \ - ACE_TRY_ENV.exception (new EXCEPTION); \ - return; \ - } while (0) - -# define ACE_THROW_RETURN(EXCEPTION,RETV) \ - do \ - { \ - ACE_TRY_ENV.exception (new EXCEPTION); \ - return RETV; \ - } while (0) - -// ACE_TRY sets up flags to control program flow. ACE_TRY_FLAG acts -// like a one-shot flip-flop. When an exception occured (detect it -// using ACE_TRY_CHECK,) ACE_TRY_FLAG will be reset and the control -// goes back into ACE_TRY_LABEL. Since ACE_TRY_FLAG is reset, the try -// block won't get executed again and the control proceeds to the following -// catch blocks. ACE_EXECTION_NOT_CAUGHT flag is used to prevent -// catching an exception twice. This macro assumes there's already an -// CORBA:;Environment variable ACE_TRY_ENV defined (which, should be -// the most usual case.) -# define ACE_TRY \ - do { \ - int ACE_TRY_FLAG = 1; \ - int ACE_EXCEPTION_NOT_CAUGHT = 1; \ - ACE_TRY_LABEL: \ - if (ACE_TRY_FLAG) \ - do { - -// ACE_TRY_NEW_ENV functions like the macro ACE_TRY but defines a -// new CORBA::Environment variable ACE_TRY_ENV. It is most often -// used in the outer most function where no ACE_TRY_ENV is available. -# define ACE_TRY_NEW_ENV \ - do { \ - CORBA::Environment ACE_TRY_ENV;\ - int ACE_TRY_FLAG = 1; \ - int ACE_EXCEPTION_NOT_CAUGHT = 1; \ - ACE_TRY_LABEL: \ - if (ACE_TRY_FLAG) \ - do { - -// ACE_TRY_EX works exactly like ACE_TRY macro except the lable used -// in the try block is customizable to avoid name clashing. It should -// be used when, nested try blocks or, multiple try blocks are required -// in the same function. -# define ACE_TRY_EX(LABEL) \ - do { \ - int ACE_TRY_FLAG = 1; \ - int ACE_EXCEPTION_NOT_CAUGHT = 1; \ - ACE_TRY_LABEL ## LABEL: \ - if (ACE_TRY_FLAG) \ - do { - -// Check for exceptions within try blocks. -# define ACE_TRY_CHECK \ - { \ - if (ACE_TRY_ENV.exception () != 0) \ - { \ - ACE_TRY_FLAG = 0; \ - goto ACE_TRY_LABEL; \ - } \ - } - -// Checking exception within EX try blocks. -# define ACE_TRY_CHECK_EX(LABEL) \ - { \ - if (ACE_TRY_ENV.exception () != 0) \ - { \ - ACE_TRY_FLAG = 0; \ - goto ACE_TRY_LABEL ## LABEL; \ - } \ - } - -// Throwing exception within TRY blocks. -# define ACE_TRY_THROW(EXCEPTION) \ - { \ - ACE_TRY_ENV.exception (new EXCEPTION); \ - ACE_TRY_FLAG = 0; \ - goto ACE_TRY_LABEL; \ - } - -# define ACE_TRY_THROW_EX(EXCEPTION,LABEL) \ - { \ - ACE_TRY_ENV.exception (new EXCEPTION); \ - ACE_TRY_FLAG = 0; \ - goto ACE_TRY_LABEL ## LABEL; \ - } - -// When exceptions occur or try block finishes execution without -// exception, control will continue in the catch block. This macro -// first check if there's non-caught exception we are waiting for -// left. It all the conditions met, we have caught an exception. -// It then reset the ACE_EXCEPTION_NOT_CAUGHT to prevent subsequent -// catch blocks catch the same exception again and extract out the -// underlying exception in the ACE_TRY_ENV. We also make a copy -// of ACE_TRY_ENV in ACE_CAUGHT_ENV in case we want to rethrow the -// exception. ACE_TRY_ENV is cleared out after the exception is -// caught so you should not use ACE_TRY_ENV within the catch block. -// (In fact, you should use the exception directly.) -# define ACE_CATCH(TYPE,VAR) \ - } while (0); \ - do \ - if (ACE_TRY_ENV.exception () != 0 && ACE_EXCEPTION_NOT_CAUGHT && \ - TYPE::_narrow(ACE_TRY_ENV.exception ()) != 0) \ - { \ - CORBA::Environment ACE_CAUGHT_ENV = ACE_TRY_ENV;\ - ACE_EXCEPTION_NOT_CAUGHT = 0; \ - TYPE &VAR = *TYPE::_narrow (ACE_CAUGHT_ENV.exception ()); \ - ACE_UNUSED_ARG (VAR); \ - ACE_TRY_ENV.clear (); - -// ACE_CATCHANY uses ACE_CATCH to catch all CORBA exceptions. -# define ACE_CATCHANY ACE_CATCH (CORBA::Exception, ex) - -// Since there's no other exception for compilers without exception -// support, we simply catch all CORBA exceptions for ACE_CATCHALL. -# define ACE_CATCHALL ACE_CATCHANY - -// Rethrowing exception within catch blocks. Notice that we depends -// on the ACE_CHECK/ACE_CHECK_RETURN following the ACE_ENDTRY to -// do the "Right Thing[TM]." -# define ACE_RETHROW \ - do \ - ACE_TRY_ENV = ACE_CAUGHT_ENV; \ - while (0) - -// Close the try block. Notice that since exception may not get -// caught, and exceptions can also be rethrown from the catch block, -// it's always a good idea to follow ACE_ENDTRY with ACE_CHECK or -// ACE_TRY_CHECK (depending on the context.) -# define ACE_ENDTRY \ - } while (0); \ - } while (0) - -#endif /* ! ACE_CORBA_HAS_EXCEPTIONS */ |