| /* Memory allocation aligned to system page boundaries. |
| |
| Copyright (C) 2005, 2008, 2010-2020 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| #ifndef _PAGEALIGN_ALLOC_H |
| # define _PAGEALIGN_ALLOC_H |
| |
| # include <stddef.h> |
| |
| #if ! defined __clang__ && \ |
| (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) |
| # define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args)) |
| #else |
| # define _GL_ATTRIBUTE_ALLOC_SIZE(args) |
| #endif |
| |
| /* Allocate a block of memory of SIZE bytes, aligned on a system page |
| boundary. |
| If SIZE is not a multiple of the system page size, it will be rounded up |
| to the next multiple. |
| Return a pointer to the start of the memory block. Upon allocation failure, |
| return NULL and set errno. */ |
| extern void *pagealign_alloc (size_t size) |
| _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1)); |
| |
| /* Like pagealign_alloc, except it exits the program if the allocation |
| fails. */ |
| extern void *pagealign_xalloc (size_t size) |
| _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((1)); |
| |
| /* Free a memory block. |
| PTR must be a non-NULL pointer returned by pagealign_alloc or |
| pagealign_xalloc. */ |
| extern void pagealign_free (void *ptr); |
| |
| #endif /* _PAGEALIGN_ALLOC_H */ |