1*86d7f5d3SJohn Marino /* Memory allocation aligned to system page boundaries. 2*86d7f5d3SJohn Marino 3*86d7f5d3SJohn Marino Copyright (C) 2005 Free Software Foundation, Inc. 4*86d7f5d3SJohn Marino 5*86d7f5d3SJohn Marino This program is free software; you can redistribute it and/or modify it 6*86d7f5d3SJohn Marino under the terms of the GNU General Public License as published 7*86d7f5d3SJohn Marino by the Free Software Foundation; either version 2, or (at your option) 8*86d7f5d3SJohn Marino any later version. 9*86d7f5d3SJohn Marino 10*86d7f5d3SJohn Marino This program is distributed in the hope that it will be useful, 11*86d7f5d3SJohn Marino but WITHOUT ANY WARRANTY; without even the implied warranty of 12*86d7f5d3SJohn Marino MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13*86d7f5d3SJohn Marino General Public License for more details. 14*86d7f5d3SJohn Marino 15*86d7f5d3SJohn Marino You should have received a copy of the GNU General Public 16*86d7f5d3SJohn Marino License along with this program; if not, write to the Free Software 17*86d7f5d3SJohn Marino Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 18*86d7f5d3SJohn Marino USA. */ 19*86d7f5d3SJohn Marino 20*86d7f5d3SJohn Marino #ifndef _PAGEALIGN_ALLOC_H 21*86d7f5d3SJohn Marino # define _PAGEALIGN_ALLOC_H 22*86d7f5d3SJohn Marino 23*86d7f5d3SJohn Marino # include <stddef.h> 24*86d7f5d3SJohn Marino 25*86d7f5d3SJohn Marino /* Allocate a block of memory of SIZE bytes, aligned on a system page 26*86d7f5d3SJohn Marino boundary. 27*86d7f5d3SJohn Marino If SIZE is not a multiple of the system page size, it will be rounded up 28*86d7f5d3SJohn Marino to the next multiple. 29*86d7f5d3SJohn Marino Return a pointer to the start of the memory block. Upon allocation failure, 30*86d7f5d3SJohn Marino return NULL and set errno. */ 31*86d7f5d3SJohn Marino extern void *pagealign_alloc (size_t size); 32*86d7f5d3SJohn Marino 33*86d7f5d3SJohn Marino /* Like pagealign_alloc, except it exits the program if the allocation 34*86d7f5d3SJohn Marino fails. */ 35*86d7f5d3SJohn Marino extern void *pagealign_xalloc (size_t size); 36*86d7f5d3SJohn Marino 37*86d7f5d3SJohn Marino /* Free a memory block. 38*86d7f5d3SJohn Marino PTR must be a non-NULL pointer returned by pagealign_alloc or 39*86d7f5d3SJohn Marino pagealign_xalloc. */ 40*86d7f5d3SJohn Marino extern void pagealign_free (void *ptr); 41*86d7f5d3SJohn Marino 42*86d7f5d3SJohn Marino #endif /* _PAGEALIGN_ALLOC_H */ 43