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88ed0b630e
LZ4F_getMaxNbWorkers() (static linking only, experimental like nbWorkers) : 0 when liblz4 is built without LZ4F_MULTITHREAD, otherwise the cap of nbWorkers, now 1024 on 64-bit systems and 128 on 32-bit ones (was 200). lz4 : build macro LZ4_NBWORKERS_MAX removed ; worker threads of frame and legacy formats are capped by LZ4F_getMaxNbWorkers(), 1 without liblz4 multi-threading (restores a cap for the legacy format on POSIX). lz4 -V reports "multithread" only when both lz4 and liblz4 support it ; -T# warning and -v note accordingly. VS2022 _test.bat checks the version line, catching a CLI built without LZ4F_MULTITHREAD (same output, so no other observable difference). frameMT : validateMaxNbWorkers ; test builds use LZ4F_NBWORKERS_MAX=128.
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*
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LZ4conf.h - compile-time parameters
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Copyright (c) Yann Collet. All rights reserved.
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GPL v2 License
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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You can contact the author at :
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- LZ4 source repository : https://github.com/lz4/lz4
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- LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
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*/
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#ifndef LZ4CONF_H_32432
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#define LZ4CONF_H_32432
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/* Default compression level.
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* Can be overridden by environment variable LZ4_CLEVEL.
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* Is overridden at runtime by command -# */
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#ifndef LZ4_CLEVEL_DEFAULT
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# define LZ4_CLEVEL_DEFAULT 1
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#endif
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/* Determines if multithreading is enabled or not
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* Default: enabled on Windows, disabled on other platforms */
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#ifndef LZ4IO_MULTITHREAD
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# ifdef _WIN32
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/* Windows supports Completion Ports */
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# define LZ4IO_MULTITHREAD 1
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# else
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/* Requires <pthread> support.
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* Can't be reliably and portably tested at source code level
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* so must be set a build level */
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# define LZ4IO_MULTITHREAD 0
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# endif
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#endif
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/* Determines default nb of threads for compression
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* Default value is 0, which means "auto" :
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* nb of threads is determined from detected local cpu.
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* Can be overridden by Environment Variable LZ4_NBWORKERS.
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* Can be overridden at runtime using -T# command */
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#ifndef LZ4_NBWORKERS_DEFAULT
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# define LZ4_NBWORKERS_DEFAULT 0
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#endif
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/* Determines default lz4 block size when none provided.
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* Default value is 7, which represents 4 MB.
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* Can be overridden at runtime using -B# command */
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#ifndef LZ4_BLOCKSIZEID_DEFAULT
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# define LZ4_BLOCKSIZEID_DEFAULT 7
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#endif
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#endif /* LZ4CONF_H_32432 */
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