936298e2bd
that Chris created: this version of GNU malloc was obtained from prep.ai.mit.edu on 9/22/1993. There was no version noted.
133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
/* Includes for memory limit warnings.
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Copyright (C) 1990, 1993 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#if defined(__osf__) && (defined(__mips) || defined(mips))
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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#ifdef __bsdi__
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#define BSD4_2
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#endif
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#ifndef BSD4_2
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#ifndef USG
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#include <sys/vlimit.h>
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#endif /* not USG */
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#else /* if BSD4_2 */
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif /* BSD4_2 */
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#ifdef emacs
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/* The important properties of this type are that 1) it's a pointer, and
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2) arithmetic on it should work as if the size of the object pointed
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to has a size of 1. */
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#ifdef __STDC__
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typedef void *POINTER;
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#else
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typedef char *POINTER;
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#endif
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typedef unsigned long SIZE;
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#ifdef NULL
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#undef NULL
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#endif
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#define NULL ((POINTER) 0)
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extern POINTER start_of_data ();
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#ifdef DATA_SEG_BITS
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#define EXCEEDS_LISP_PTR(ptr) \
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(((unsigned int) (ptr) & ~DATA_SEG_BITS) >> VALBITS)
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#else
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#define EXCEEDS_LISP_PTR(ptr) ((unsigned int) (ptr) >> VALBITS)
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#endif
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#ifdef BSD
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#ifndef DATA_SEG_BITS
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extern char etext;
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#define start_of_data() &etext
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#endif
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#endif
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#else /* Not emacs */
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extern char etext;
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#define start_of_data() &etext
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#endif /* Not emacs */
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/* start of data space; can be changed by calling malloc_init */
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static POINTER data_space_start;
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/* Number of bytes of writable memory we can expect to be able to get */
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static unsigned int lim_data;
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#ifdef USG
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static void
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get_lim_data ()
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{
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extern long ulimit ();
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lim_data = -1;
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/* Use the ulimit call, if we seem to have it. */
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#if !defined (ULIMIT_BREAK_VALUE) || defined (LINUX)
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lim_data = ulimit (3, 0);
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#endif
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/* If that didn't work, just use the macro's value. */
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#ifdef ULIMIT_BREAK_VALUE
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if (lim_data == -1)
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lim_data = ULIMIT_BREAK_VALUE;
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#endif
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lim_data -= (long) data_space_start;
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}
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#else /* not USG */
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#if !defined(BSD4_2) && !defined(__osf__)
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static void
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get_lim_data ()
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{
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lim_data = vlimit (LIM_DATA, -1);
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}
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#else /* BSD4_2 */
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static void
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get_lim_data ()
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{
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struct rlimit XXrlimit;
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getrlimit (RLIMIT_DATA, &XXrlimit);
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#ifdef RLIM_INFINITY
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lim_data = XXrlimit.rlim_cur & RLIM_INFINITY; /* soft limit */
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#else
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lim_data = XXrlimit.rlim_cur; /* soft limit */
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#endif
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}
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#endif /* BSD4_2 */
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#endif /* not USG */
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