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171
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1 /* xmalloc.c -- safe versions of malloc and realloc */ |
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2 |
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3 /* This file is part of GNU Info, a program for reading online documentation |
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4 stored in Info format. |
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5 |
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6 This file has appeared in prior works by the Free Software Foundation; |
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7 thus it carries copyright dates from 1988 through 1993. |
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8 |
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9 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993 Free Software |
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10 Foundation, Inc. |
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11 |
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12 This program is free software; you can redistribute it and/or modify |
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13 it under the terms of the GNU General Public License as published by |
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14 the Free Software Foundation; either version 2, or (at your option) |
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15 any later version. |
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16 |
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17 This program is distributed in the hope that it will be useful, |
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18 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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20 GNU General Public License for more details. |
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21 |
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22 You should have received a copy of the GNU General Public License |
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23 along with this program; if not, write to the Free Software |
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24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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25 |
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26 Written by Brian Fox (bfox@ai.mit.edu). */ |
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27 |
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1242
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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171
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32 #if !defined (ALREADY_HAVE_XMALLOC) |
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33 #include <stdio.h> |
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34 |
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35 static void memory_error_and_abort (); |
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36 |
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37 /* **************************************************************** */ |
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38 /* */ |
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39 /* Memory Allocation and Deallocation. */ |
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40 /* */ |
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41 /* **************************************************************** */ |
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42 |
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43 /* Return a pointer to free()able block of memory large enough |
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44 to hold BYTES number of bytes. If the memory cannot be allocated, |
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45 print an error message and abort. */ |
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46 void * |
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47 xmalloc (bytes) |
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48 int bytes; |
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49 { |
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50 void *temp = (void *)malloc (bytes); |
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51 |
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52 if (!temp) |
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53 memory_error_and_abort ("xmalloc"); |
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54 return (temp); |
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55 } |
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56 |
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57 void * |
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58 xrealloc (pointer, bytes) |
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59 void *pointer; |
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60 int bytes; |
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61 { |
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62 void *temp; |
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63 |
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64 if (!pointer) |
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65 temp = (void *)malloc (bytes); |
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66 else |
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67 temp = (void *)realloc (pointer, bytes); |
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68 |
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69 if (!temp) |
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70 memory_error_and_abort ("xrealloc"); |
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71 |
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72 return (temp); |
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73 } |
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74 |
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75 static void |
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76 memory_error_and_abort (fname) |
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77 char *fname; |
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78 { |
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79 fprintf (stderr, "%s: Out of virtual memory!\n", fname); |
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80 abort (); |
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81 } |
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82 #endif /* !ALREADY_HAVE_XMALLOC */ |
