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/*
* Copyright (c) 2016-2020, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#include "config.h"
/* Define a config for each fast level we want to test with. */
#define FAST_LEVEL(x) \
param_value_t const level_fast##x##_param_values[] = { \
{.param = ZSTD_c_compressionLevel, .value = -x}, \
}; \
config_t const level_fast##x = { \
.name = "level -" #x, \
.cli_args = "--fast=" #x, \
.param_values = PARAM_VALUES(level_fast##x##_param_values), \
}; \
config_t const level_fast##x##_dict = { \
.name = "level -" #x " with dict", \
.cli_args = "--fast=" #x, \
.param_values = PARAM_VALUES(level_fast##x##_param_values), \
.use_dictionary = 1, \
};
/* Define a config for each level we want to test with. */
#define LEVEL(x) \
param_value_t const level_##x##_param_values[] = { \
{.param = ZSTD_c_compressionLevel, .value = x}, \
}; \
config_t const level_##x = { \
.name = "level " #x, \
.cli_args = "-" #x, \
.param_values = PARAM_VALUES(level_##x##_param_values), \
}; \
config_t const level_##x##_dict = { \
.name = "level " #x " with dict", \
.cli_args = "-" #x, \
.param_values = PARAM_VALUES(level_##x##_param_values), \
.use_dictionary = 1, \
};
#define PARAM_VALUES(pv) \
{ .data = pv, .size = sizeof(pv) / sizeof((pv)[0]) }
#include "levels.h"
#undef LEVEL
#undef FAST_LEVEL
static config_t no_pledged_src_size = {
.name = "no source size",
.cli_args = "",
.param_values = PARAM_VALUES(level_0_param_values),
.no_pledged_src_size = 1,
};
static param_value_t const ldm_param_values[] = {
{.param = ZSTD_c_enableLongDistanceMatching, .value = 1},
};
static config_t ldm = {
.name = "long distance mode",
.cli_args = "--long",
.param_values = PARAM_VALUES(ldm_param_values),
};
static param_value_t const mt_param_values[] = {
{.param = ZSTD_c_nbWorkers, .value = 2},
};
static config_t mt = {
.name = "multithreaded",
.cli_args = "-T2",
.param_values = PARAM_VALUES(mt_param_values),
};
static param_value_t const mt_ldm_param_values[] = {
{.param = ZSTD_c_nbWorkers, .value = 2},
{.param = ZSTD_c_enableLongDistanceMatching, .value = 1},
};
static config_t mt_ldm = {
.name = "multithreaded long distance mode",
.cli_args = "-T2 --long",
.param_values = PARAM_VALUES(mt_ldm_param_values),
};
static param_value_t mt_advanced_param_values[] = {
{.param = ZSTD_c_nbWorkers, .value = 2},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
};
static config_t mt_advanced = {
.name = "multithreaded with advanced params",
.cli_args = "-T2 --no-compress-literals",
.param_values = PARAM_VALUES(mt_advanced_param_values),
};
static param_value_t const small_wlog_param_values[] = {
{.param = ZSTD_c_windowLog, .value = 10},
};
static config_t small_wlog = {
.name = "small window log",
.cli_args = "--zstd=wlog=10",
.param_values = PARAM_VALUES(small_wlog_param_values),
};
static param_value_t const small_hlog_param_values[] = {
{.param = ZSTD_c_hashLog, .value = 6},
{.param = ZSTD_c_strategy, .value = (int)ZSTD_btopt},
};
static config_t small_hlog = {
.name = "small hash log",
.cli_args = "--zstd=hlog=6,strat=7",
.param_values = PARAM_VALUES(small_hlog_param_values),
};
static param_value_t const small_clog_param_values[] = {
{.param = ZSTD_c_chainLog, .value = 6},
{.param = ZSTD_c_strategy, .value = (int)ZSTD_btopt},
};
static config_t small_clog = {
.name = "small chain log",
.cli_args = "--zstd=clog=6,strat=7",
.param_values = PARAM_VALUES(small_clog_param_values),
};
static param_value_t const uncompressed_literals_param_values[] = {
{.param = ZSTD_c_compressionLevel, .value = 3},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
};
static config_t uncompressed_literals = {
.name = "uncompressed literals",
.cli_args = "-3 --no-compress-literals",
.param_values = PARAM_VALUES(uncompressed_literals_param_values),
};
static param_value_t const uncompressed_literals_opt_param_values[] = {
{.param = ZSTD_c_compressionLevel, .value = 19},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
};
static config_t uncompressed_literals_opt = {
.name = "uncompressed literals optimal",
.cli_args = "-19 --no-compress-literals",
.param_values = PARAM_VALUES(uncompressed_literals_opt_param_values),
};
static param_value_t const huffman_literals_param_values[] = {
{.param = ZSTD_c_compressionLevel, .value = -1},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_huffman},
};
static config_t huffman_literals = {
.name = "huffman literals",
.cli_args = "--fast=1 --compress-literals",
.param_values = PARAM_VALUES(huffman_literals_param_values),
};
static param_value_t const explicit_params_param_values[] = {
{.param = ZSTD_c_checksumFlag, .value = 1},
{.param = ZSTD_c_contentSizeFlag, .value = 0},
{.param = ZSTD_c_dictIDFlag, .value = 0},
{.param = ZSTD_c_strategy, .value = (int)ZSTD_greedy},
{.param = ZSTD_c_windowLog, .value = 18},
{.param = ZSTD_c_hashLog, .value = 21},
{.param = ZSTD_c_chainLog, .value = 21},
{.param = ZSTD_c_targetLength, .value = 100},
};
static config_t explicit_params = {
.name = "explicit params",
.cli_args = "--no-check --no-dictID --zstd=strategy=3,wlog=18,hlog=21,clog=21,tlen=100",
.param_values = PARAM_VALUES(explicit_params_param_values),
};
static config_t const* g_configs[] = {
#define FAST_LEVEL(x) &level_fast##x, &level_fast##x##_dict,
#define LEVEL(x) &level_##x, &level_##x##_dict,
#include "levels.h"
#undef LEVEL
#undef FAST_LEVEL
&no_pledged_src_size,
&ldm,
&mt,
&mt_ldm,
&small_wlog,
&small_hlog,
&small_clog,
&explicit_params,
&uncompressed_literals,
&uncompressed_literals_opt,
&huffman_literals,
&mt_advanced,
NULL,
};
config_t const* const* configs = g_configs;
int config_skip_data(config_t const* config, data_t const* data) {
return config->use_dictionary && !data_has_dict(data);
}
int config_get_level(config_t const* config)
{
param_values_t const params = config->param_values;
size_t i;
for (i = 0; i < params.size; ++i) {
if (params.data[i].param == ZSTD_c_compressionLevel)
return (int)params.data[i].value;
}
return CONFIG_NO_LEVEL;
}
ZSTD_parameters config_get_zstd_params(
config_t const* config,
uint64_t srcSize,
size_t dictSize)
{
ZSTD_parameters zparams = {};
param_values_t const params = config->param_values;
int level = config_get_level(config);
if (level == CONFIG_NO_LEVEL)
level = 3;
zparams = ZSTD_getParams(
level,
config->no_pledged_src_size ? ZSTD_CONTENTSIZE_UNKNOWN : srcSize,
dictSize);
for (size_t i = 0; i < params.size; ++i) {
unsigned const value = params.data[i].value;
switch (params.data[i].param) {
case ZSTD_c_contentSizeFlag:
zparams.fParams.contentSizeFlag = value;
break;
case ZSTD_c_checksumFlag:
zparams.fParams.checksumFlag = value;
break;
case ZSTD_c_dictIDFlag:
zparams.fParams.noDictIDFlag = !value;
break;
case ZSTD_c_windowLog:
zparams.cParams.windowLog = value;
break;
case ZSTD_c_chainLog:
zparams.cParams.chainLog = value;
break;
case ZSTD_c_hashLog:
zparams.cParams.hashLog = value;
break;
case ZSTD_c_searchLog:
zparams.cParams.searchLog = value;
break;
case ZSTD_c_minMatch:
zparams.cParams.minMatch = value;
break;
case ZSTD_c_targetLength:
zparams.cParams.targetLength = value;
break;
case ZSTD_c_strategy:
zparams.cParams.strategy = (ZSTD_strategy)value;
break;
default:
break;
}
}
return zparams;
}
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