1/* Safe automatic memory allocation with out of memory checking. 2 Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2003. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18#ifndef _XMALLOCA_H 19#define _XMALLOCA_H 20 21#include "malloca.h" 22 23 24#ifdef __cplusplus 25extern "C" { 26#endif 27 28 29/* xmalloca(N) is a checking safe variant of alloca(N). It allocates N bytes 30 of memory allocated on the stack, that must be freed using freea() before 31 the function returns. Upon failure, it exits with an error message. */ 32#if HAVE_ALLOCA 33# define xmalloca(N) \ 34 ((N) < 4032 - sa_increment \ 35 ? (void *) ((char *) alloca ((N) + sa_increment) + sa_increment) \ 36 : xmmalloca (N)) 37extern void * xmmalloca (size_t n); 38#else 39# define xmalloca(N) \ 40 xmalloc (N) 41#endif 42 43/* Maybe we should also define a variant 44 xnmalloca (size_t n, size_t s) - behaves like xmalloca (n * s) 45 If this would be useful in your application. please speak up. */ 46 47 48#ifdef __cplusplus 49} 50#endif 51 52 53#endif /* _XMALLOCA_H */ 54