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Old static class Cpu replaced to interface ICpuInfo.

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XMRig 2018-09-23 17:51:56 +03:00
parent 1f609c7ebd
commit ee4d980955
18 changed files with 406 additions and 281 deletions
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128
src/Cpu.cpp
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/* 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 2016-2018 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 <libcpuid.h>
#include <math.h>
#include <string.h>
#include "Cpu.h"
bool Cpu::m_l2_exclusive = false;
char Cpu::m_brand[64] = { 0 };
int Cpu::m_flags = 0;
int Cpu::m_l2_cache = 0;
int Cpu::m_l3_cache = 0;
int Cpu::m_sockets = 1;
int Cpu::m_totalCores = 0;
size_t Cpu::m_totalThreads = 0;
size_t Cpu::optimalThreadsCount(size_t size, int maxCpuUsage)
{
if (m_totalThreads == 1) {
return 1;
}
size_t cache = 0;
if (m_l3_cache) {
cache = m_l2_exclusive ? (m_l2_cache + m_l3_cache) : m_l3_cache;
}
else {
cache = m_l2_cache;
}
size_t count = 0;
if (cache) {
count = cache / size;
if (cache % size >= size / 2) {
count++;
}
}
else {
count = m_totalThreads / 2;
}
if (count > m_totalThreads) {
count = m_totalThreads;
}
if (((float) count / m_totalThreads * 100) > maxCpuUsage) {
count = (int) ceil((float) m_totalThreads * (maxCpuUsage / 100.0));
}
return count < 1 ? 1 : count;
}
void Cpu::initCommon()
{
struct cpu_raw_data_t raw = { 0 };
struct cpu_id_t data = { 0 };
cpuid_get_raw_data(&raw);
cpu_identify(&raw, &data);
strncpy(m_brand, data.brand_str, sizeof(m_brand) - 1);
m_totalThreads = data.total_logical_cpus;
m_sockets = m_totalThreads / data.num_logical_cpus;
if (m_sockets == 0) {
m_sockets = 1;
}
m_totalCores = data.num_cores * m_sockets;
m_l3_cache = data.l3_cache > 0 ? data.l3_cache * m_sockets : 0;
// Workaround for AMD CPUs https://github.com/anrieff/libcpuid/issues/97
if (data.vendor == VENDOR_AMD && data.ext_family >= 0x15 && data.ext_family < 0x17) {
m_l2_cache = data.l2_cache * (m_totalCores / 2) * m_sockets;
m_l2_exclusive = true;
}
// Workaround for Intel Pentium Dual-Core, Core Duo, Core 2 Duo, Core 2 Quad and their Xeon homologue
// These processors have L2 cache shared by 2 cores.
else if (data.vendor == VENDOR_INTEL && data.ext_family == 0x06 && (data.ext_model == 0x0E || data.ext_model == 0x0F || data.ext_model == 0x17)) {
int l2_count_per_socket = m_totalCores > 1 ? m_totalCores / 2 : 1;
m_l2_cache = data.l2_cache > 0 ? data.l2_cache * l2_count_per_socket * m_sockets : 0;
}
else{
m_l2_cache = data.l2_cache > 0 ? data.l2_cache * m_totalCores * m_sockets : 0;
}
# if defined(__x86_64__) || defined(_M_AMD64)
m_flags |= X86_64;
# endif
if (data.flags[CPU_FEATURE_AES]) {
m_flags |= AES;
}
if (data.flags[CPU_FEATURE_BMI2]) {
m_flags |= BMI2;
}
}