X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Utils%2FException.cc;h=8b2f2802c6e88020f79a9469ffa284fd0516b9e3;hb=62da0fc2f859a98e105b45859c346750a1435ebb;hp=cc87f615d59d9a89546b123d16f2498a0b7ee47f;hpb=553781d9e9bce316dca24ac4f0c42e5613e849e0;p=senf.git

diff --git a/Utils/Exception.cc b/Utils/Exception.cc
index cc87f61..8b2f280 100644
--- a/Utils/Exception.cc
+++ b/Utils/Exception.cc
@@ -1,9 +1,9 @@
 // $Id$
 //
-// Copyright (C) 2006 
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
-//     Stefan Bund <stefan.bund@fokus.fraunhofer.de>
+// Copyright (C) 2006
+// 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
@@ -27,28 +27,42 @@
 //#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////////////////////////////////////////
@@ -57,5 +71,10 @@ prefix_ char const * senf::SystemException::what()
 
 // Local Variables:
 // mode: c++
+// fill-column: 100
 // c-file-style: "senf"
+// indent-tabs-mode: nil
+// ispell-local-dictionary: "american"
+// compile-command: "scons -u test"
+// comment-column: 40
 // End: