/* * Copyright (c) 2018 Jaroslav Jindrak * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <cstdlib> #include <new> namespace std { const char* bad_alloc::what() const noexcept { return "std::bad_alloc"; } const nothrow_t nothrow{}; static new_handler handler = nullptr; new_handler set_new_handler(new_handler h) { auto old = handler; handler = h; return old; } new_handler get_new_handler() noexcept { return handler; } } void* operator new(std::size_t size) { if (size == 0) size = 1; void *ptr = std::malloc(size); while (!ptr) { auto h = std::get_new_handler(); if (h) h(); else { // TODO: For this we need stack unwinding support. /* throw std::bad_alloc{}; */ } } return ptr; } void* operator new(std::size_t ignored, void* ptr) { // Placement new. return ptr; } void* operator new(std::size_t size, const std::nothrow_t& nt) noexcept { void* ptr{nullptr}; try { ptr = ::operator new(size); } catch(...) { /* DUMMY BODY */ } return ptr; } void* operator new[](std::size_t size) { return ::operator new(size); } void* operator new[](std::size_t size, const std::nothrow_t& nt) noexcept { return ::operator new(size, nt); } void operator delete(void* ptr) noexcept { if (ptr) std::free(ptr); } void operator delete(void* ptr, std::size_t ignored) noexcept { ::operator delete(ptr); } void operator delete[](void* ptr) noexcept { ::operator delete(ptr); } void operator delete[](void* ptr, std::size_t ignored) noexcept { ::operator delete(ptr); }