/* Allocate memory on a page boundary. Copyright (C) 1991, 1992 Free Software Foundation, Inc. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. The author may be reached (Email) at the address mike@ai.mit.edu, or (US mail) as Mike Haertel c/o Free Software Foundation. */ #include <stdlib.h> #include "malloc.h" #ifdef emacs #include "config.h" #endif #ifdef __GNU_LIBRARY__ extern size_t __getpagesize __P ((void)); #else #ifndef USG extern size_t getpagesize __P ((void)); #define __getpagesize() getpagesize() #else #include <sys/param.h> #ifdef EXEC_PAGESIZE #define __getpagesize() EXEC_PAGESIZE #else /* No EXEC_PAGESIZE. */ #ifdef NBPG #ifndef CLSIZE #define CLSIZE 1 #endif /* No CLSIZE. */ #define __getpagesize() (NBPG * CLSIZE) #else /* No NBPG. */ #define __getpagesize() NBPC #endif /* NBPG. */ #endif /* EXEC_PAGESIZE. */ #endif /* USG. */ #endif static size_t pagesize; __ptr_t valloc (size) size_t size; { if (pagesize == 0) pagesize = __getpagesize (); return memalign (pagesize, size); }