| /* xmalloc.c -- safe versions of malloc and realloc */ |
| |
| /* Copyright (C) 1991 Free Software Foundation, Inc. |
| |
| This file is part of GNU Readline, a library for reading lines |
| of text with interactive input and history editing. |
| |
| Readline is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by the |
| Free Software Foundation; either version 2, or (at your option) any |
| later version. |
| |
| Readline is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with Readline; see the file COPYING. If not, write to the Free |
| Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| |
| #if defined (HAVE_CONFIG_H) |
| #include <config.h> |
| #endif |
| |
| #include <stdio.h> |
| |
| #if defined (HAVE_STDLIB_H) |
| # include <stdlib.h> |
| #else |
| # include "ansi_stdlib.h" |
| #endif /* HAVE_STDLIB_H */ |
| |
| /* Generic pointer type. */ |
| #ifndef PTR_T |
| |
| #if defined (__STDC__) |
| # define PTR_T void * |
| #else |
| # define PTR_T char * |
| #endif |
| |
| #endif /* PTR_T */ |
| |
| /* **************************************************************** */ |
| /* */ |
| /* Memory Allocation and Deallocation. */ |
| /* */ |
| /* **************************************************************** */ |
| |
| static void |
| memory_error_and_abort (fname) |
| char *fname; |
| { |
| fprintf (stderr, "%s: out of virtual memory\n", fname); |
| exit (2); |
| } |
| |
| /* Return a pointer to free()able block of memory large enough |
| to hold BYTES number of bytes. If the memory cannot be allocated, |
| print an error message and abort. */ |
| PTR_T |
| xmalloc (bytes) |
| size_t bytes; |
| { |
| PTR_T temp; |
| |
| temp = malloc (bytes); |
| if (temp == 0) |
| memory_error_and_abort ("xmalloc"); |
| return (temp); |
| } |
| |
| PTR_T |
| xrealloc (pointer, bytes) |
| PTR_T pointer; |
| size_t bytes; |
| { |
| PTR_T temp; |
| |
| temp = pointer ? realloc (pointer, bytes) : malloc (bytes); |
| |
| if (temp == 0) |
| memory_error_and_abort ("xrealloc"); |
| return (temp); |
| } |
| |
| void |
| xfree (string) |
| PTR_T string; |
| { |
| if (string) |
| free (string); |
| } |