1/* xmalloc.c -- safe versions of malloc and realloc */ 2 3/* Copyright (C) 1991 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#define READLINE_LIBRARY 22 23#if defined (HAVE_CONFIG_H) 24#include <config.h> 25#endif 26 27#include <stdio.h> 28 29#if defined (HAVE_STDLIB_H) 30# include <stdlib.h> 31#else 32# include "ansi_stdlib.h" 33#endif /* HAVE_STDLIB_H */ 34 35#include "xmalloc.h" 36 37/* **************************************************************** */ 38/* */ 39/* Memory Allocation and Deallocation. */ 40/* */ 41/* **************************************************************** */ 42 43static void 44memory_error_and_abort (fname) 45 char *fname; 46{ 47 fprintf (stderr, "%s: out of virtual memory\n", fname); 48 exit (2); 49} 50 51/* Return a pointer to free()able block of memory large enough 52 to hold BYTES number of bytes. If the memory cannot be allocated, 53 print an error message and abort. */ 54PTR_T 55xmalloc (bytes) 56 size_t bytes; 57{ 58 PTR_T temp; 59 60 temp = malloc (bytes); 61 if (temp == 0) 62 memory_error_and_abort ("xmalloc"); 63 return (temp); 64} 65 66PTR_T 67xrealloc (pointer, bytes) 68 PTR_T pointer; 69 size_t bytes; 70{ 71 PTR_T temp; 72 73 temp = pointer ? realloc (pointer, bytes) : malloc (bytes); 74 75 if (temp == 0) 76 memory_error_and_abort ("xrealloc"); 77 return (temp); 78} 79 80/* Use this as the function to call when adding unwind protects so we 81 don't need to know what free() returns. */ 82void 83xfree (string) 84 PTR_T string; 85{ 86 if (string) 87 free (string); 88} 89