1 /* Memory allocation aligned to system page boundaries. 2 3 Copyright (C) 2005 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify it 6 under the terms of the GNU General Public License as published 7 by the Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 General Public License for more details. 14 15 You should have received a copy of the GNU General Public 16 License along with this program; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 18 USA. */ 19 20 #ifndef _PAGEALIGN_ALLOC_H 21 # define _PAGEALIGN_ALLOC_H 22 23 # include <stddef.h> 24 25 /* Allocate a block of memory of SIZE bytes, aligned on a system page 26 boundary. 27 If SIZE is not a multiple of the system page size, it will be rounded up 28 to the next multiple. 29 Return a pointer to the start of the memory block. Upon allocation failure, 30 return NULL and set errno. */ 31 extern void *pagealign_alloc (size_t size); 32 33 /* Like pagealign_alloc, except it exits the program if the allocation 34 fails. */ 35 extern void *pagealign_xalloc (size_t size); 36 37 /* Free a memory block. 38 PTR must be a non-NULL pointer returned by pagealign_alloc or 39 pagealign_xalloc. */ 40 extern void pagealign_free (void *ptr); 41 42 #endif /* _PAGEALIGN_ALLOC_H */ 43