1 /* 2 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #ifndef __SAFE_ALLOC_H__ 27 #define __SAFE_ALLOC_H__ 28 29 #include "j2d_md.h" 30 31 /* 32 * Macroses defined below are wrappers for alloc functions 33 * that perform buffer size calculation with integer overflow 34 * check. 35 */ 36 #define SAFE_TO_ALLOC_2(c, sz) \ 37 (((c) > 0) && ((sz) > 0) && \ 38 ((0xffffffffu / ((juint)(c))) > ((juint)(sz)))) 39 40 #define SAFE_TO_ALLOC_3(w, h, sz) \ 41 (((w) > 0) && ((h) > 0) && ((sz) > 0) && \ 42 (((0xffffffffu / ((juint)(w))) / ((juint)(h))) > ((juint)(sz)))) 43 44 45 #endif // __SAFE_ALLOC_H__