1 /* $NetBSD: valloc.c,v 1.2 2016/01/13 21:56:38 christos Exp $ */ 2 3 /* Allocate memory on a page boundary. 4 Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc. 5 6 This library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Library General Public License as 8 published by the Free Software Foundation; either version 2 of the 9 License, or (at your option) any later version. 10 11 This library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Library General Public License for more details. 15 16 You should have received a copy of the GNU Library General Public 17 License along with this library; see the file COPYING.LIB. If 18 not, write to the Free Software Foundation, Inc., 675 Mass Ave, 19 Cambridge, MA 02139, USA. 20 21 The author may be reached (Email) at the address mike@ai.mit.edu, 22 or (US mail) as Mike Haertel c/o Free Software Foundation. */ 23 24 #if defined (__GNU_LIBRARY__) || defined (_LIBC) 25 #include <stddef.h> 26 #include <unistd.h> 27 #include <sys/cdefs.h> 28 extern size_t __getpagesize __P ((void)); 29 #else 30 #include "getpagesize.h" 31 #define __getpagesize() getpagesize() 32 #endif 33 34 #ifndef _MALLOC_INTERNAL 35 #define _MALLOC_INTERNAL 36 #include <malloc.h> 37 #endif 38 39 static __malloc_size_t pagesize; 40 41 __ptr_t 42 valloc (size) 43 __malloc_size_t size; 44 { 45 if (pagesize == 0) 46 pagesize = __getpagesize (); 47 48 return memalign (pagesize, size); 49 } 50