185 lines
4.7 KiB
C++
185 lines
4.7 KiB
C++
/* XMRig
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* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
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* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
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* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
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* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2017-2019 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
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* Copyright 2018 Lee Clagett <https://github.com/vtnerd>
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* Copyright 2018-2019 tevador <tevador@gmail.com>
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* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
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* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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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 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "crypto/rx/RxDataset.h"
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#include "backend/common/Tags.h"
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#include "base/io/log/Log.h"
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#include "crypto/common/VirtualMemory.h"
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#include "crypto/randomx/randomx.h"
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#include "crypto/rx/RxAlgo.h"
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#include "crypto/rx/RxCache.h"
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#include <thread>
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#include <uv.h>
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static_assert(RANDOMX_FLAG_LARGE_PAGES == 1, "RANDOMX_FLAG_LARGE_PAGES flag mismatch");
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xmrig::RxDataset::RxDataset(bool hugePages, bool cache, RxConfig::Mode mode) :
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m_mode(mode)
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{
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allocate(hugePages);
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if (cache) {
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m_cache = new RxCache(hugePages);
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}
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}
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xmrig::RxDataset::RxDataset(RxCache *cache) :
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m_cache(cache)
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{
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}
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xmrig::RxDataset::~RxDataset()
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{
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if (m_dataset) {
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randomx_release_dataset(m_dataset);
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}
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delete m_cache;
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}
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bool xmrig::RxDataset::init(const Buffer &seed, uint32_t numThreads)
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{
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if (!m_cache) {
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return false;
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}
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m_cache->init(seed);
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if (!get()) {
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return true;
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}
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const uint64_t datasetItemCount = randomx_dataset_item_count();
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if (numThreads > 1) {
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std::vector<std::thread> threads;
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threads.reserve(numThreads);
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for (uint64_t i = 0; i < numThreads; ++i) {
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const uint32_t a = (datasetItemCount * i) / numThreads;
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const uint32_t b = (datasetItemCount * (i + 1)) / numThreads;
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threads.emplace_back(randomx_init_dataset, m_dataset, m_cache->get(), a, b - a);
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}
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for (uint32_t i = 0; i < numThreads; ++i) {
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threads[i].join();
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}
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}
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else {
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randomx_init_dataset(m_dataset, m_cache->get(), 0, datasetItemCount);
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}
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return true;
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}
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size_t xmrig::RxDataset::size(bool cache) const
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{
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size_t size = 0;
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if (m_dataset) {
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size += maxSize();
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}
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if (cache && m_cache) {
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size += RxCache::maxSize();
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}
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return size;
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}
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std::pair<uint32_t, uint32_t> xmrig::RxDataset::hugePages(bool cache) const
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{
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constexpr size_t twoMiB = 2U * 1024U * 1024U;
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constexpr size_t cacheSize = VirtualMemory::align(RxCache::maxSize(), twoMiB) / twoMiB;
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size_t total = VirtualMemory::align(maxSize(), twoMiB) / twoMiB;
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uint32_t count = 0;
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if (isHugePages()) {
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count += total;
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}
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if (cache && m_cache) {
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total += cacheSize;
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if (m_cache->isHugePages()) {
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count += cacheSize;
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}
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}
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return { count, total };
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}
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void *xmrig::RxDataset::raw() const
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{
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return m_dataset ? randomx_get_dataset_memory(m_dataset) : nullptr;
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}
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void xmrig::RxDataset::setRaw(const void *raw)
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{
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if (!m_dataset) {
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return;
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}
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memcpy(randomx_get_dataset_memory(m_dataset), raw, maxSize());
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}
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void xmrig::RxDataset::allocate(bool hugePages)
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{
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if (m_mode == RxConfig::LightMode) {
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LOG_ERR(CLEAR "%s" RED_BOLD_S "fast RandomX mode disabled by config", rx_tag());
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return;
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}
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if (m_mode == RxConfig::AutoMode && uv_get_total_memory() < (maxSize() + RxCache::maxSize())) {
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LOG_ERR(CLEAR "%s" RED_BOLD_S "not enough memory for RandomX dataset", rx_tag());
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return;
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}
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if (hugePages) {
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m_flags = RANDOMX_FLAG_LARGE_PAGES;
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m_dataset = randomx_alloc_dataset(static_cast<randomx_flags>(m_flags));
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}
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if (!m_dataset) {
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m_flags = RANDOMX_FLAG_DEFAULT;
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m_dataset = randomx_alloc_dataset(static_cast<randomx_flags>(m_flags));
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}
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}
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