1 /* Memory allocation aligned to system page boundaries. 2 3 Copyright (C) 2005, 2008, 2010-2021 Free Software Foundation, Inc. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) 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 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #ifndef _PAGEALIGN_ALLOC_H 19 # define _PAGEALIGN_ALLOC_H 20 21 # include <stddef.h> 22 23 /* Free a memory block. 24 PTR must be a non-NULL pointer returned by pagealign_alloc or 25 pagealign_xalloc. */ 26 extern void pagealign_free (void *ptr) 27 _GL_ATTRIBUTE_NONNULL ((1)); 28 29 /* Allocate a block of memory of SIZE bytes, aligned on a system page 30 boundary. 31 If SIZE is not a multiple of the system page size, it will be rounded up 32 to the next multiple. 33 Return a pointer to the start of the memory block. Upon allocation failure, 34 return NULL and set errno. */ 35 extern void *pagealign_alloc (size_t size) 36 _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (pagealign_free, 1) 37 _GL_ATTRIBUTE_ALLOC_SIZE ((1)); 38 39 /* Like pagealign_alloc, except it exits the program if the allocation 40 fails. */ 41 extern void *pagealign_xalloc (size_t size) 42 _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (pagealign_free, 1) 43 _GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL; 44 45 #endif /* _PAGEALIGN_ALLOC_H */