1/* 2 * Copyright (c) 2008 - 2010 Apple Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24#include "memory.hpp" 25#include "compiler.h" 26 27#include <cstdlib> 28#include <new> 29 30namespace platform { 31 32void 33invoke_new_handler(void) 34{ 35 std::new_handler handler; 36 37 // Get the curent new_handler by double-swapping. If multiple threads 38 // race over this, then we will end up aborting. Ce la vie. 39 handler = std::set_new_handler(::abort); 40 std::set_new_handler(handler); 41 42 handler(); 43} 44 45void * 46allocate( 47 void * buf, 48 std::size_t nbytes) 49{ 50retry: 51 if (buf == NULL) { 52 if (nbytes % platform::pagesize()) { 53 buf = ::malloc(nbytes); 54 } else { 55 buf = ::valloc(nbytes); 56 } 57 } else { 58 buf = ::realloc(buf, nbytes); 59 } 60 61 if (UNLIKELY(buf == NULL)) { 62 invoke_new_handler(); 63 goto retry; 64 } 65 66 return buf; 67} 68 69} // namespace platform 70/* vim: set ts=4 sw=4 tw=79 et cindent : */ 71