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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., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
19 | #include "mmalloc.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 pagesize; | |
27 | ||
28 | PTR | |
29 | mvalloc (md, size) | |
30 | PTR md; | |
31 | size_t size; | |
32 | { | |
33 | if (pagesize == 0) | |
34 | { | |
35 | pagesize = getpagesize (); | |
36 | } | |
37 | ||
38 | return (mmemalign (md, pagesize, size)); | |
39 | } |