// $Id$
//
// Copyright (C) 2006
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
-// Stefan Bund <stefan.bund@fokus.fraunhofer.de>
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
+// Stefan Bund <g0dil@berlios.de>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
//#include "Exception.ih"
// Custom includes
-#include <cstring>
-#include <sstream>
#define prefix_
///////////////////////////////cc.p////////////////////////////////////////
-prefix_ void senf::SystemException::init()
+prefix_ void senf::throwErrno(std::string const & where, int code)
{
- // We normallyl don't want to consume memory in an exception,
- // however all other solutions to format the message are terribly
- // ugly (since thay must use a static and shared buffer ...)
- std::stringstream s;
- if (where)
- s << where << ": ";
- s << "(" << err << ") " << std::strerror(err);
- buffer_ = s.str();
-}
+#ifndef SENF_NO_ERRNOEXC
+ switch (code) {
-prefix_ char const * senf::SystemException::what()
- const throw()
-{
- return buffer_.c_str();
+ // BOOST_PP_REPEAT is limited to 256 repetitions. The max errno value I found in any header file
+ // was somewhere around 530 or so. I assume going to 1024 will be good enough. This explicit
+ // code will be optimized into a jump table by g++ (which is more efficient than trying to do
+ // the table oneself)
+
+# define ExceptionCase(z, n, data) case n: throw ErrnoException<n>(where);
+ BOOST_PP_REPEAT(256, ExceptionCase, _) ;
+# undef ExceptionCase
+
+# define ExceptionCase(z, n, data) case 256+n: throw ErrnoException<256+n>(where);
+ BOOST_PP_REPEAT(256, ExceptionCase, _) ;
+# undef ExceptionCase
+
+# define ExceptionCase(z, n, data) case 512+n: throw ErrnoException<512+n>(where);
+ BOOST_PP_REPEAT(256, ExceptionCase, _) ;
+# undef ExceptionCase
+
+# define ExceptionCase(z, n, data) case 768+n: throw ErrnoException<768+n>(where);
+ BOOST_PP_REPEAT(256, ExceptionCase, _) ;
+# undef ExceptionCase
+
+ default:
+ throw SystemException(where, code);
+ }
+#else
+ throw SystemException(where, code);
+#endif
}
///////////////////////////////cc.e////////////////////////////////////////
// indent-tabs-mode: nil
// ispell-local-dictionary: "american"
// compile-command: "scons -u test"
+// comment-column: 40
// End: