f4abba02ba
* Move all ZSTDMT parameter setting code to ZSTD_CCtxParams_*Parameter(). ZSTDMT now calls these functions, so we can keep all the logic in the same place. * Clean up `ZSTD_CCtx_setParameter()` to only add extra checks where needed. * Clean up `ZSTDMT_initJobCCtxParams()` by copying all parameters by default, and then zeroing the ones that need to be zeroed. We've missed adding several parameters here, and it makes more sense to only have to update it if you change something in ZSTDMT. * Add `ZSTDMT_cParam_clampBounds()` to clamp a parameter into its valid range. Use this to keep backwards compatibility when setting ZSTDMT parameters, which clamp into the valid range.
279 lines
9.2 KiB
C
279 lines
9.2 KiB
C
/*
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* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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#include "config.h"
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/* Define a config for each fast level we want to test with. */
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#define FAST_LEVEL(x) \
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param_value_t const level_fast##x##_param_values[] = { \
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{.param = ZSTD_c_compressionLevel, .value = -x}, \
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}; \
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config_t const level_fast##x = { \
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.name = "level -" #x, \
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.cli_args = "--fast=" #x, \
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.param_values = PARAM_VALUES(level_fast##x##_param_values), \
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}; \
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config_t const level_fast##x##_dict = { \
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.name = "level -" #x " with dict", \
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.cli_args = "--fast=" #x, \
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.param_values = PARAM_VALUES(level_fast##x##_param_values), \
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.use_dictionary = 1, \
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};
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/* Define a config for each level we want to test with. */
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#define LEVEL(x) \
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param_value_t const level_##x##_param_values[] = { \
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{.param = ZSTD_c_compressionLevel, .value = x}, \
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}; \
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config_t const level_##x = { \
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.name = "level " #x, \
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.cli_args = "-" #x, \
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.param_values = PARAM_VALUES(level_##x##_param_values), \
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}; \
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config_t const level_##x##_dict = { \
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.name = "level " #x " with dict", \
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.cli_args = "-" #x, \
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.param_values = PARAM_VALUES(level_##x##_param_values), \
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.use_dictionary = 1, \
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};
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#define PARAM_VALUES(pv) \
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{ .data = pv, .size = sizeof(pv) / sizeof((pv)[0]) }
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#include "levels.h"
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#undef LEVEL
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#undef FAST_LEVEL
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static config_t no_pledged_src_size = {
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.name = "no source size",
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.cli_args = "",
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.param_values = PARAM_VALUES(level_0_param_values),
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.no_pledged_src_size = 1,
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};
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static param_value_t const ldm_param_values[] = {
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{.param = ZSTD_c_enableLongDistanceMatching, .value = 1},
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};
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static config_t ldm = {
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.name = "long distance mode",
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.cli_args = "--long",
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.param_values = PARAM_VALUES(ldm_param_values),
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};
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static param_value_t const mt_param_values[] = {
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{.param = ZSTD_c_nbWorkers, .value = 2},
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};
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static config_t mt = {
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.name = "multithreaded",
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.cli_args = "-T2",
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.param_values = PARAM_VALUES(mt_param_values),
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};
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static param_value_t const mt_ldm_param_values[] = {
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{.param = ZSTD_c_nbWorkers, .value = 2},
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{.param = ZSTD_c_enableLongDistanceMatching, .value = 1},
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};
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static config_t mt_ldm = {
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.name = "multithreaded long distance mode",
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.cli_args = "-T2 --long",
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.param_values = PARAM_VALUES(mt_ldm_param_values),
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};
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static param_value_t mt_advanced_param_values[] = {
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{.param = ZSTD_c_nbWorkers, .value = 2},
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{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
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};
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static config_t mt_advanced = {
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.name = "multithreaded with advanced params",
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.cli_args = "-T2 --no-compressed-literals",
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.param_values = PARAM_VALUES(mt_advanced_param_values),
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};
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static param_value_t const small_wlog_param_values[] = {
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{.param = ZSTD_c_windowLog, .value = 10},
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};
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static config_t small_wlog = {
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.name = "small window log",
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.cli_args = "--zstd=wlog=10",
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.param_values = PARAM_VALUES(small_wlog_param_values),
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};
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static param_value_t const small_hlog_param_values[] = {
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{.param = ZSTD_c_hashLog, .value = 6},
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{.param = ZSTD_c_strategy, .value = (int)ZSTD_btopt},
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};
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static config_t small_hlog = {
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.name = "small hash log",
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.cli_args = "--zstd=hlog=6,strat=7",
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.param_values = PARAM_VALUES(small_hlog_param_values),
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};
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static param_value_t const small_clog_param_values[] = {
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{.param = ZSTD_c_chainLog, .value = 6},
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{.param = ZSTD_c_strategy, .value = (int)ZSTD_btopt},
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};
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static config_t small_clog = {
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.name = "small chain log",
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.cli_args = "--zstd=clog=6,strat=7",
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.param_values = PARAM_VALUES(small_clog_param_values),
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};
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static param_value_t const uncompressed_literals_param_values[] = {
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{.param = ZSTD_c_compressionLevel, .value = 3},
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{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
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};
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static config_t uncompressed_literals = {
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.name = "uncompressed literals",
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.cli_args = "-3 --no-compress-literals",
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.param_values = PARAM_VALUES(uncompressed_literals_param_values),
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};
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static param_value_t const uncompressed_literals_opt_param_values[] = {
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{.param = ZSTD_c_compressionLevel, .value = 19},
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{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
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};
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static config_t uncompressed_literals_opt = {
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.name = "uncompressed literals optimal",
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.cli_args = "-19 --no-compress-literals",
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.param_values = PARAM_VALUES(uncompressed_literals_opt_param_values),
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};
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static param_value_t const huffman_literals_param_values[] = {
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{.param = ZSTD_c_compressionLevel, .value = -1},
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{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_huffman},
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};
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static config_t huffman_literals = {
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.name = "huffman literals",
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.cli_args = "--fast=1 --compress-literals",
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.param_values = PARAM_VALUES(huffman_literals_param_values),
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};
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static param_value_t const explicit_params_param_values[] = {
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{.param = ZSTD_c_checksumFlag, .value = 1},
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{.param = ZSTD_c_contentSizeFlag, .value = 0},
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{.param = ZSTD_c_dictIDFlag, .value = 0},
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{.param = ZSTD_c_strategy, .value = (int)ZSTD_greedy},
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{.param = ZSTD_c_windowLog, .value = 18},
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{.param = ZSTD_c_hashLog, .value = 21},
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{.param = ZSTD_c_chainLog, .value = 21},
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{.param = ZSTD_c_targetLength, .value = 100},
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};
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static config_t explicit_params = {
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.name = "explicit params",
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.cli_args = "--no-check --no-dictID --zstd=strategy=3,wlog=18,hlog=21,clog=21,tlen=100",
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.param_values = PARAM_VALUES(explicit_params_param_values),
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};
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static config_t const* g_configs[] = {
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#define FAST_LEVEL(x) &level_fast##x, &level_fast##x##_dict,
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#define LEVEL(x) &level_##x, &level_##x##_dict,
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#include "levels.h"
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#undef LEVEL
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#undef FAST_LEVEL
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&no_pledged_src_size,
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&ldm,
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&mt,
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&mt_ldm,
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&small_wlog,
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&small_hlog,
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&small_clog,
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&explicit_params,
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&uncompressed_literals,
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&uncompressed_literals_opt,
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&huffman_literals,
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&mt_advanced,
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NULL,
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};
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config_t const* const* configs = g_configs;
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int config_skip_data(config_t const* config, data_t const* data) {
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return config->use_dictionary && !data_has_dict(data);
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}
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int config_get_level(config_t const* config)
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{
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param_values_t const params = config->param_values;
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size_t i;
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for (i = 0; i < params.size; ++i) {
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if (params.data[i].param == ZSTD_c_compressionLevel)
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return (int)params.data[i].value;
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}
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return CONFIG_NO_LEVEL;
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}
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ZSTD_parameters config_get_zstd_params(
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config_t const* config,
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uint64_t srcSize,
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size_t dictSize)
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{
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ZSTD_parameters zparams = {};
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param_values_t const params = config->param_values;
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int level = config_get_level(config);
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if (level == CONFIG_NO_LEVEL)
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level = 3;
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zparams = ZSTD_getParams(
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level,
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config->no_pledged_src_size ? ZSTD_CONTENTSIZE_UNKNOWN : srcSize,
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dictSize);
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for (size_t i = 0; i < params.size; ++i) {
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unsigned const value = params.data[i].value;
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switch (params.data[i].param) {
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case ZSTD_c_contentSizeFlag:
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zparams.fParams.contentSizeFlag = value;
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break;
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case ZSTD_c_checksumFlag:
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zparams.fParams.checksumFlag = value;
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break;
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case ZSTD_c_dictIDFlag:
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zparams.fParams.noDictIDFlag = !value;
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break;
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case ZSTD_c_windowLog:
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zparams.cParams.windowLog = value;
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break;
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case ZSTD_c_chainLog:
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zparams.cParams.chainLog = value;
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break;
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case ZSTD_c_hashLog:
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zparams.cParams.hashLog = value;
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break;
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case ZSTD_c_searchLog:
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zparams.cParams.searchLog = value;
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break;
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case ZSTD_c_minMatch:
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zparams.cParams.minMatch = value;
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break;
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case ZSTD_c_targetLength:
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zparams.cParams.targetLength = value;
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break;
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case ZSTD_c_strategy:
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zparams.cParams.strategy = (ZSTD_strategy)value;
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break;
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default:
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break;
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}
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}
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return zparams;
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}
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