gecko/xpcom/glue/functexcept.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=2 et :
 */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Code
 *
 * The Initial Developer of the Original Code is
 * The Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Chris Jones <jones.chris.g@gmail.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef mozilla_functexcept_h
#define mozilla_functexcept_h

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// For gcc, we define these inline to abort so that we're absolutely
// certain that (i) no exceptions are thrown from Gecko; (ii) these
// errors are always terminal and caught by breakpad.

// NB: It would be nice to #include "nsDebug.h" and use
// NS_RUNTIMEABORT(), but because this file is used within chromium,
// and nsDebug pulls in nscore, and nscore pulls in prtypes, and
// chromium can't build with prtypes being included before
// base/basictypes, then we have to roll our own aborting impl.

// Assume that if we're building with gcc, we're on a platform where
// abort() is fatal and triggers breakpad.
#define MOZ_FE_ABORT(_msg)                        \
  do {                                            \
    fputs(_msg, stderr);                          \
    fputs("\n", stderr);                          \
    abort();                                      \
  } while (0)

namespace std {

inline void NS_NORETURN
__throw_bad_exception(void)
{
  MOZ_FE_ABORT("fatal: STL threw bad_exception");
}

inline void NS_NORETURN
__throw_bad_alloc(void)
{
  MOZ_FE_ABORT("fatal: STL threw bad_alloc");
}

inline void NS_NORETURN
__throw_bad_cast(void)
{
  MOZ_FE_ABORT("fatal: STL threw bad_cast");
}

inline void NS_NORETURN
__throw_bad_typeid(void)
{
  MOZ_FE_ABORT("fatal: STL threw bad_typeid");
}

inline void NS_NORETURN
__throw_logic_error(const char* msg)
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_domain_error(const char* msg)
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_invalid_argument(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_length_error(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_out_of_range(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_runtime_error(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_range_error(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_overflow_error(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_underflow_error(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_ios_failure(const char* msg) 
{
  MOZ_FE_ABORT(msg);
}

inline void NS_NORETURN
__throw_system_error(int err) 
{
  char error[128];
  snprintf(error, sizeof(error)-1,
           "fatal: STL threw system_error: %s (%d)", strerror(err), err);
  MOZ_FE_ABORT(error);
}

} // namespace std

#endif  // mozilla_functexcept_h