124 lines
2.9 KiB
C++
124 lines
2.9 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2011 Danny Robson <danny@nerdcruft.net>
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*/
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#include "except.hpp"
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#include "../debug.hpp"
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#include "../types/casts.hpp"
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//-----------------------------------------------------------------------------
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using namespace std;
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using namespace net;
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//-----------------------------------------------------------------------------
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net::error::error (const std::string &_what):
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runtime_error (_what)
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{ ; }
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net::error::error (int _code):
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runtime_error (strerror (_code))
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{ CHECK (_code != 0); }
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//-----------------------------------------------------------------------------
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std::string
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net::error::code_to_string (int code) {
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#ifdef __WIN32
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char message[256];
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// It should be fine to signcast the code here as Windows guarantees all
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// error messages are positive but appears to use int for compatibility
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DWORD output = FormatMessage (0, NULL, sign_cast<unsigned> (code), 0, message, sizeof (message), NULL);
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CHECK_NEQ (output, 0);
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return std::string (message);
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#else
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return strerror (code);
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#endif
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}
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//-----------------------------------------------------------------------------
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void
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net::error::throw_code (int code) {
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#ifdef __WIN32
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throw net::error (code);
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#else
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CHECK (code != 0);
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switch (code) {
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#define ERROR_CODE(c) \
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case c: \
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throw net::error_code<c> (); \
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break;
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ERROR_CODE(ECONNREFUSED);
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ERROR_CODE(ECONNRESET);
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ERROR_CODE(EINVAL);
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ERROR_CODE(ENOTCONN);
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default:
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unreachable ();
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#undef ERROR_CODE
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}
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#endif
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}
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void
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net::error::throw_code (void)
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{ throw_code (last_code ()); }
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//-----------------------------------------------------------------------------
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void
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net::error::try_code (int err) {
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if (__builtin_expect (err != 0, false))
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throw_code (err);
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}
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void
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net::error::try_code (void)
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{ try_code (last_code ()); }
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//-----------------------------------------------------------------------------
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int
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net::error::last_code (void) {
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#ifdef __WIN32
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return WSAGetLastError ();
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#else
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return errno;
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#endif
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}
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//-----------------------------------------------------------------------------
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template <int CODE>
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net::error_code<CODE>::error_code (void):
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net::error (CODE)
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{ ; }
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template <int CODE>
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int
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net::error_code<CODE>::code (void) const
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{ return CODE; }
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