/*
* Copyright ( c ) 2020 , Oracle and / or its affiliates . All rights reserved .
* Copyright ( c ) 2020 SAP SE . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*
*/
#include "precompiled.hpp"
#include "memory/metaspace/chunklevel.hpp"
#include "utilities/debug.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/ostream.hpp"
#include "utilities/powerOfTwo.hpp"
namespace metaspace {
using namespace chunklevel;
chunklevel_t chunklevel::level_fitting_word_size(size_t word_size) {
assert(MAX_CHUNK_WORD_SIZE >= word_size,
SIZE_FORMAT " - too large allocation size." , word_size * BytesPerWord);
if (word_size <= MIN_CHUNK_WORD_SIZE) {
return HIGHEST_CHUNK_LEVEL;
}
const size_t v_pow2 = round_up_power_of_2(word_size);
const chunklevel_t lvl = (chunklevel_t)(exact_log2(MAX_CHUNK_WORD_SIZE) - exact_log2(v_pow2));
return lvl;
}
void chunklevel::print_chunk_size(outputStream* st, chunklevel_t lvl) {
if (chunklevel::is_valid_level(lvl)) {
const size_t s = chunklevel::word_size_for_level(lvl) * BytesPerWord;
if (s < 1 * M) {
st->print("%3uk" , (unsigned )(s / K));
} else {
st->print("%3um" , (unsigned )(s / M));
}
} else {
st->print("?-?" );
}
}
} // namespace metaspace
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