1 /* 2 * This code is (c) 2012 Johannes Thoma 3 * 4 * This file is free software: you can redistribute it and/or modify 5 * it under the terms of the GNU Lesser General Public License as published by 6 * the Free Software Foundation, either version 3 of the License, or 7 * (at your option) any later version. 8 * 9 * This file 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 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this file. If not, see <http://www.gnu.org/licenses/>. 16 * 17 * You can download original source from https://github.com/johannesthoma/mmap_allocator.git 18 */ 19 20 #ifndef _MMAP_ACCESS_MODE 21 #define _MMAP_ACCESS_MODE 22 23 #include <stdio.h> 24 25 #define ALIGN_TO_PAGE(x) ((x) & ~(getpagesize() - 1)) 26 #define UPPER_ALIGN_TO_PAGE(x) ALIGN_TO_PAGE((x)+(getpagesize()-1)) 27 #define OFFSET_INTO_PAGE(x) ((x) & (getpagesize() - 1)) 28 29 namespace mmap_allocator_namespace 30 { 31 enum access_mode { 32 DEFAULT_STL_ALLOCATOR, /* Default STL allocator (malloc based). Reason is to have containers that do both and are compatible */ 33 READ_ONLY, /* Readonly modus. Segfaults when vector content is written to */ 34 READ_WRITE_PRIVATE, /* Read/write access, writes are not propagated to disk */ 35 READ_WRITE_SHARED /* Read/write access, writes are propagated to disk (file is modified) */ 36 }; 37 38 enum allocator_flags { 39 MAP_WHOLE_FILE = 1, 40 ALLOW_REMAP = 2, 41 BYPASS_FILE_POOL = 4, 42 KEEP_FOREVER = 8 43 }; 44 45 void set_verbosity(int v); 46 int get_verbosity(void); 47 } 48 49 #endif 50