Added GpuWorker class.

src/backend/common/GpuWorker.cpp

@@ -0,0 +1,52 @@
+/* XMRig
+ * Copyright (c) 2018-2020 SChernykh   <https://github.com/SChernykh>
+ * Copyright (c) 2016-2020 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 "backend/common/GpuWorker.h"
+#include "base/tools/Chrono.h"
+
+
+xmrig::GpuWorker::GpuWorker(size_t id, int64_t affinity, int priority, uint32_t deviceIndex) : Worker(id, affinity, priority),
+    m_deviceIndex(deviceIndex)
+{
+}
+
+
+void xmrig::GpuWorker::storeStats()
+{
+    // Get index which is unused now
+    const uint32_t index = m_index.load(std::memory_order_relaxed) ^ 1;
+
+    // Fill in the data for that index
+    m_hashCount[index] = m_count;
+    m_timestamp[index] = Chrono::steadyMSecs();
+
+    // Switch to that index
+    // All data will be in memory by the time it completes thanks to std::memory_order_seq_cst
+    m_index.fetch_xor(1, std::memory_order_seq_cst);
+}
+
+
+void xmrig::GpuWorker::hashrateData(uint64_t &hashCount, uint64_t &timeStamp, uint64_t &rawHashes) const
+{
+    const uint32_t index = m_index.load(std::memory_order_relaxed);
+
+    rawHashes = m_hashrateData.interpolate(timeStamp);
+    hashCount = m_hashCount[index];
+    timeStamp = m_timestamp[index];
+}