59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/* Allocate memory on a page boundary.
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Copyright (C) 1991 Free Software Foundation, Inc.
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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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/* IGNORE(@ */
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#include <ansidecl.h>
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#include <stdlib.h>
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/* @) */
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#include <malloc.h>
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#ifdef __GNU_LIBRARY__
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extern size_t EXFUN(__getpagesize, (NOARGS));
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#else
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#ifndef USG
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extern size_t EXFUN(getpagesize, (NOARGS));
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#define __getpagesize() getpagesize()
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#else
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#include <sys/param.h>
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#ifdef EXEC_PAGESIZE
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#define __getpagesize() EXEC_PAGESIZE
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#else /* No EXEC_PAGESIZE. */
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#ifdef NBPG
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#ifndef CLSIZE
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#define CLSIZE 1
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#endif /* No CLSIZE. */
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#define __getpagesize() (NBPG * CLSIZE)
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#else /* No NBPG. */
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#define __getpagesize() NBPC
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#endif /* NBPG. */
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#endif /* EXEC_PAGESIZE. */
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#endif /* USG. */
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#endif
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static size_t pagesize;
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PTR
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DEFUN(valloc, (size), size_t size)
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{
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if (pagesize == 0)
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pagesize = __getpagesize();
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return memalign (pagesize, size);
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}
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