xmrig/src/backend/common/Hashrate.cpp
2019-07-19 05:03:14 +07:00

177 lines
4.5 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 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
* 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 <assert.h>
#include <cmath>
#include <memory.h>
#include <stdio.h>
#include "backend/common/Hashrate.h"
#include "base/tools/Chrono.h"
#include "base/tools/Handle.h"
#include "rapidjson/document.h"
inline static const char *format(double h, char *buf, size_t size)
{
if (std::isnormal(h)) {
snprintf(buf, size, "%03.1f", h);
return buf;
}
return "n/a";
}
xmrig::Hashrate::Hashrate(size_t threads) :
m_highest(0.0),
m_threads(threads)
{
m_counts = new uint64_t*[threads];
m_timestamps = new uint64_t*[threads];
m_top = new uint32_t[threads];
for (size_t i = 0; i < threads; i++) {
m_counts[i] = new uint64_t[kBucketSize]();
m_timestamps[i] = new uint64_t[kBucketSize]();
m_top[i] = 0;
}
}
xmrig::Hashrate::~Hashrate()
{
for (size_t i = 0; i < m_threads; i++) {
delete [] m_counts[i];
delete [] m_timestamps[i];
}
delete [] m_counts;
delete [] m_timestamps;
delete [] m_top;
}
double xmrig::Hashrate::calc(size_t ms) const
{
double result = 0.0;
double data;
for (size_t i = 0; i < m_threads; ++i) {
data = calc(i, ms);
if (std::isnormal(data)) {
result += data;
}
}
return result;
}
double xmrig::Hashrate::calc(size_t threadId, size_t ms) const
{
assert(threadId < m_threads);
if (threadId >= m_threads) {
return nan("");
}
uint64_t earliestHashCount = 0;
uint64_t earliestStamp = 0;
uint64_t lastestStamp = 0;
uint64_t lastestHashCnt = 0;
bool haveFullSet = false;
for (size_t i = 1; i < kBucketSize; i++) {
const size_t idx = (m_top[threadId] - i) & kBucketMask;
if (m_timestamps[threadId][idx] == 0) {
break;
}
if (lastestStamp == 0) {
lastestStamp = m_timestamps[threadId][idx];
lastestHashCnt = m_counts[threadId][idx];
}
if (xmrig::Chrono::highResolutionMSecs() - m_timestamps[threadId][idx] > ms) {
haveFullSet = true;
break;
}
earliestStamp = m_timestamps[threadId][idx];
earliestHashCount = m_counts[threadId][idx];
}
if (!haveFullSet || earliestStamp == 0 || lastestStamp == 0) {
return nan("");
}
if (lastestStamp - earliestStamp == 0) {
return nan("");
}
const double hashes = static_cast<double>(lastestHashCnt - earliestHashCount);
const double time = static_cast<double>(lastestStamp - earliestStamp) / 1000.0;
return hashes / time;
}
void xmrig::Hashrate::add(size_t threadId, uint64_t count, uint64_t timestamp)
{
const size_t top = m_top[threadId];
m_counts[threadId][top] = count;
m_timestamps[threadId][top] = timestamp;
m_top[threadId] = (top + 1) & kBucketMask;
}
void xmrig::Hashrate::updateHighest()
{
double highest = calc(ShortInterval);
if (std::isnormal(highest) && highest > m_highest) {
m_highest = highest;
}
}
const char *xmrig::Hashrate::format(double h, char *buf, size_t size)
{
return ::format(h, buf, size);
}
rapidjson::Value xmrig::Hashrate::normalize(double d)
{
using namespace rapidjson;
if (!std::isnormal(d)) {
return Value(kNullType);
}
return Value(floor(d * 100.0) / 100.0);
}