REDACTED-rig/src/crypto/rx/RxDataset.cpp

185 lines
4.7 KiB
C++

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