| 1 | /* Allocate memory on a page boundary. |
| 2 | Copyright (C) 1991 Free Software Foundation, Inc. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Library General Public License as |
| 6 | published by the Free Software Foundation; either version 2 of the |
| 7 | License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Library General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Library General Public |
| 15 | License along with the GNU C Library; see the file COPYING.LIB. If |
| 16 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 17 | Boston, MA 02111-1307, USA. */ |
| 18 | |
| 19 | #include "mmprivate.h" |
| 20 | |
| 21 | /* Cache the pagesize for the current host machine. Note that if the host |
| 22 | does not readily provide a getpagesize() function, we need to emulate it |
| 23 | elsewhere, not clutter up this file with lots of kluges to try to figure |
| 24 | it out. */ |
| 25 | |
| 26 | static size_t cache_pagesize; |
| 27 | #if NEED_DECLARATION_GETPAGESIZE |
| 28 | extern int getpagesize PARAMS ((void)); |
| 29 | #endif |
| 30 | |
| 31 | PTR |
| 32 | mvalloc (md, size) |
| 33 | PTR md; |
| 34 | size_t size; |
| 35 | { |
| 36 | if (cache_pagesize == 0) |
| 37 | { |
| 38 | cache_pagesize = getpagesize (); |
| 39 | } |
| 40 | |
| 41 | return (mmemalign (md, cache_pagesize, size)); |
| 42 | } |
| 43 | |
| 44 | |
| 45 | PTR |
| 46 | valloc (size) |
| 47 | size_t size; |
| 48 | { |
| 49 | return mvalloc ((PTR) NULL, size); |
| 50 | } |