xmalloc.c

早期freebsd实现

/* xmalloc.c - get memory or bust
   Copyright (C) 1987 Free Software Foundation, Inc.

This file is part of GAS, the GNU Assembler.

GAS 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 1, or (at your option)
any later version.

GAS 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 GAS; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

/*
NAME
	xmalloc() - get memory or bust
INDEX
	xmalloc() uses malloc()

SYNOPSIS
	char *	my_memory;

	my_memory = xmalloc(42); / * my_memory gets address of 42 chars * /

DESCRIPTION

	Use xmalloc() as an "error-free" malloc(). It does almost the same job.
	When it cannot honour your request for memory it BOMBS your program
	with a "virtual memory exceeded" message. Malloc() returns NULL and
	does not bomb your program.

SEE ALSO
	malloc()

*/
#ifdef USG
#include <malloc.h>
#endif

char * xmalloc(n)
     long n;
{
  char *	retval;
  char *	malloc();
  void	error();

  if ( ! (retval = malloc ((unsigned)n)) )
    {
      error("virtual memory exceeded");
    }
  return (retval);
}

/* end: xmalloc.c */