[deliverable/binutils-gdb.git] / readline / xmalloc.c

/* 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. */
#define READLINE_LIBRARY

#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 */

#include "xmalloc.h"

/* **************************************************************** */
/*								    */
/*		   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. */
char *
xmalloc (bytes)
     int bytes;
{
  char *temp;

  temp = (char *)malloc (bytes);
  if (temp == 0)
    memory_error_and_abort ("xmalloc");
  return (temp);
}

char *
xrealloc (pointer, bytes)
     PTR_T pointer;
     int bytes;
{
  char *temp;

  temp = pointer ? (char *)realloc (pointer, bytes) : (char *)malloc (bytes);

  if (temp == 0)
    memory_error_and_abort ("xrealloc");
  return (temp);
}

/* Use this as the function to call when adding unwind protects so we
   don't need to know what free() returns. */
void
xfree (string)
     PTR_T string;
{
  if (string)
    free (string);
}
Commit	Line	Data
	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
	43	static void
	44	memory_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. */
	54	char *
	55	xmalloc (bytes)
	56	int bytes;
	57	{
	58	char *temp;
	59
	60	temp = (char *)malloc (bytes);
	61	if (temp == 0)
	62	memory_error_and_abort ("xmalloc");
	63	return (temp);
	64	}
	65
	66	char *
	67	xrealloc (pointer, bytes)
	68	PTR_T pointer;
	69	int bytes;
	70	{
	71	char *temp;
	72
	73	temp = pointer ? (char )realloc (pointer, bytes) : (char )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. */
	82	void
	83	xfree (string)
	84	PTR_T string;
	85	{
	86	if (string)
	87	free (string);
	88	}