1 /* 2 LZ4conf.h - compile-time parameters 3 Copyright (C) Yann Collet 2011-2024 4 GPL v2 License 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License along 17 with this program; if not, write to the Free Software Foundation, Inc., 18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19 20 You can contact the author at : 21 - LZ4 source repository : https://github.com/lz4/lz4 22 - LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c 23 */ 24 25 #ifndef LZ4CONF_H_32432 26 #define LZ4CONF_H_32432 27 28 29 /* Default compression level. 30 * Can be overridden by environment variable LZ4_CLEVEL. 31 * Can be overridden at runtime using -# command */ 32 #ifndef LZ4_CLEVEL_DEFAULT 33 # define LZ4_CLEVEL_DEFAULT 1 34 #endif 35 36 /* Determines if multithreading is enabled or not 37 * Default: disabled */ 38 #ifndef LZ4IO_MULTITHREAD 39 # ifdef _WIN32 40 /* Windows support Completion Ports */ 41 # define LZ4IO_MULTITHREAD 1 42 # else 43 /* Requires <pthread> support. 44 * Can't be reliably and portably tested at source code level */ 45 # define LZ4IO_MULTITHREAD 0 46 # endif 47 #endif 48 49 /* Determines default nb of threads for compression 50 * Default value is 0, which means "auto" : 51 * nb of threads is determined from detected local cpu. 52 * Can be overriden by Environment Variable LZ4_NBWORKERS. 53 * Can be overridden at runtime using -T# command */ 54 #ifndef LZ4_NBWORKERS_DEFAULT 55 # define LZ4_NBWORKERS_DEFAULT 0 56 #endif 57 58 /* Maximum nb of compression threads selectable at runtime */ 59 #ifndef LZ4_NBWORKERS_MAX 60 # define LZ4_NBWORKERS_MAX 200 61 #endif 62 63 /* Determines default lz4 block size when none provided. 64 * Default value is 7, which represents 4 MB. 65 * Can be overridden at runtime using -B# command */ 66 #ifndef LZ4_BLOCKSIZEID_DEFAULT 67 # define LZ4_BLOCKSIZEID_DEFAULT 7 68 #endif 69 70 71 #endif /* LZ4CONF_H_32432 */ 72