Memory allocation refactoring.

src/crypto/common/HugePagesInfo.cpp

@@ -0,0 +1,50 @@
+/* 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 "crypto/common/HugePagesInfo.h"
+#include "crypto/common/VirtualMemory.h"
+
+
+namespace xmrig {
+
+constexpr size_t twoMiB = 2U * 1024U * 1024U;
+constexpr size_t oneGiB = 1024U * 1024U * 1024U;
+
+} // namespace xmrig
+
+
+xmrig::HugePagesInfo::HugePagesInfo(const VirtualMemory *memory)
+{
+    if (memory->isOneGbPages()) {
+        size        = VirtualMemory::align(memory->size(), oneGiB);
+        total       = size / oneGiB;
+        allocated   = size / oneGiB;
+    }
+    else {
+        size        = memory->size();
+        total       = size / twoMiB;
+        allocated   = memory->isHugePages() ? total : 0;
+    }
+}