| /* |
| * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "utilities/debug.hpp" |
| |
| #include <new> |
| |
| //-------------------------------------------------------------------------------------- |
| // Non-product code |
| |
| #ifndef PRODUCT |
| // The global operator new should never be called since it will usually indicate |
| // a memory leak. Use CHeapObj as the base class of such objects to make it explicit |
| // that they're allocated on the C heap. |
| // Commented out in product version to avoid conflicts with third-party C++ native code. |
| // |
| // In C++98/03 the throwing new operators are defined with the following signature: |
| // |
| // void* operator new(std::size_tsize) throw(std::bad_alloc); |
| // void* operator new[](std::size_tsize) throw(std::bad_alloc); |
| // |
| // while all the other (non-throwing) new and delete operators are defined with an empty |
| // throw clause (i.e. "operator delete(void* p) throw()") which means that they do not |
| // throw any exceptions (see section 18.4 of the C++ standard). |
| // |
| // In the new C++11/14 standard, the signature of the throwing new operators was changed |
| // by completely omitting the throw clause (which effectively means they could throw any |
| // exception) while all the other new/delete operators where changed to have a 'nothrow' |
| // clause instead of an empty throw clause. |
| // |
| // Unfortunately, the support for exception specifications among C++ compilers is still |
| // very fragile. While some more strict compilers like AIX xlC or HP aCC reject to |
| // override the default throwing new operator with a user operator with an empty throw() |
| // clause, the MS Visual C++ compiler warns for every non-empty throw clause like |
| // throw(std::bad_alloc) that it will ignore the exception specification. The following |
| // operator definitions have been checked to correctly work with all currently supported |
| // compilers and they should be upwards compatible with C++11/14. Therefore |
| // PLEASE BE CAREFUL if you change the signature of the following operators! |
| |
| static void * zero = (void *) 0; |
| |
| void* operator new(size_t size) /* throw(std::bad_alloc) */ { |
| fatal("Should not call global operator new"); |
| return zero; |
| } |
| |
| void* operator new [](size_t size) /* throw(std::bad_alloc) */ { |
| fatal("Should not call global operator new[]"); |
| return zero; |
| } |
| |
| void* operator new(size_t size, const std::nothrow_t& nothrow_constant) throw() { |
| fatal("Should not call global operator new"); |
| return 0; |
| } |
| |
| void* operator new [](size_t size, std::nothrow_t& nothrow_constant) throw() { |
| fatal("Should not call global operator new[]"); |
| return 0; |
| } |
| |
| void operator delete(void* p) throw() { |
| fatal("Should not call global delete"); |
| } |
| |
| void operator delete [](void* p) throw() { |
| fatal("Should not call global delete []"); |
| } |
| |
| #endif // Non-product |