1/* xmalloc.c -- safe versions of malloc and realloc */ 2 3/* Copyright (C) 1991-2003 Free Software Foundation, Inc. 4 5 This file is part of GNU Readline, a library for reading lines 6 of text with interactive input and history editing. 7 8 Readline is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published by the 10 Free Software Foundation; either version 2, or (at your option) any 11 later version. 12 13 Readline is distributed in the hope that it will be useful, but 14 WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with Readline; see the file COPYING. If not, write to the Free 20 Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ 21 22#if defined (HAVE_CONFIG_H) 23#include <config.h> 24#endif 25 26#include <stdio.h> 27 28#if defined (HAVE_STDLIB_H) 29# include <stdlib.h> 30#else 31# include "ansi_stdlib.h" 32#endif /* HAVE_STDLIB_H */ 33 34/* Generic pointer type. */ 35#ifndef PTR_T 36 37#if defined (__STDC__) 38# define PTR_T void * 39#else 40# define PTR_T char * 41#endif 42 43#endif /* PTR_T */ 44 45/* **************************************************************** */ 46/* */ 47/* Memory Allocation and Deallocation. */ 48/* */ 49/* **************************************************************** */ 50 51static void 52memory_error_and_abort (fname) 53 char *fname; 54{ 55 fprintf (stderr, "%s: out of virtual memory\n", fname); 56 exit (2); 57} 58 59/* Return a pointer to free()able block of memory large enough 60 to hold BYTES number of bytes. If the memory cannot be allocated, 61 print an error message and abort. */ 62PTR_T 63xmalloc (bytes) 64 size_t bytes; 65{ 66 PTR_T temp; 67 68 temp = malloc (bytes); 69 if (temp == 0) 70 memory_error_and_abort ("xmalloc"); 71 return (temp); 72} 73 74PTR_T 75xrealloc (pointer, bytes) 76 PTR_T pointer; 77 size_t bytes; 78{ 79 PTR_T temp; 80 81 temp = pointer ? realloc (pointer, bytes) : malloc (bytes); 82 83 if (temp == 0) 84 memory_error_and_abort ("xrealloc"); 85 return (temp); 86} 87 88void 89xfree (string) 90 PTR_T string; 91{ 92 if (string) 93 free (string); 94} 95