Added new class Msr.

src/hw/msr/Msr.cpp

@@ -0,0 +1,70 @@
+/* XMRig
+ * Copyright (c) 2018-2021 SChernykh   <https://github.com/SChernykh>
+ * Copyright (c) 2016-2021 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 "hw/msr/Msr.h"
+#include "base/io/log/Log.h"
+
+
+namespace xmrig {
+
+
+static const char *kTag = YELLOW_BG_BOLD(WHITE_BOLD_S " msr     ");
+static std::weak_ptr<Msr> instance;
+
+
+} // namespace xmrig
+
+
+
+const char *xmrig::Msr::tag()
+{
+    return kTag;
+}
+
+
+
+std::shared_ptr<xmrig::Msr> xmrig::Msr::get()
+{
+    auto msr = instance.lock();
+    if (!msr) {
+        msr      = std::make_shared<Msr>();
+        instance = msr;
+    }
+
+    if (msr->isAvailable()) {
+        return msr;
+    }
+
+    return {};
+}
+
+
+xmrig::MsrItem xmrig::Msr::read(uint32_t reg, int32_t cpu, bool verbose) const
+{
+    uint64_t value = 0;
+    if (rdmsr(reg, cpu, value)) {
+        return { reg, value };
+    }
+
+    if (verbose) {
+        LOG_WARN("%s " YELLOW_BOLD("cannot read MSR 0x%08" PRIx32), tag(), reg);
+    }
+
+    return {};
+}