Add SystemInfo class

openVulkanoCpp/Host/Windows/SystemInfo.cpp

@@ -0,0 +1,82 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include "Host/SystemInfo.hpp"
+#include "Base/Logger.hpp"
+#include <iostream>
+#include <Windows.h>
+#include <Psapi.h>
+
+namespace openVulkanoCpp
+{
+	namespace
+	{
+		enum class SYS_MEM_TYPE { TOTAL_PHYS, AVAIL_PHYS };
+
+		size_t ReadSystemMemInfo(SYS_MEM_TYPE type)
+		{
+			MEMORYSTATUSEX status;
+			status.dwLength = sizeof(status);
+			if (GlobalMemoryStatusEx(&status))
+			{
+				switch (type)
+				{
+					case SYS_MEM_TYPE::TOTAL_PHYS: return status.ullTotalPhys;
+					case SYS_MEM_TYPE::AVAIL_PHYS: return status.ullAvailPhys;
+				}
+			}
+			Logger::PERF->error("Failed to get system RAM info");
+			return 0;
+		}
+
+		enum class APP_MEM_TYPE { VM_MAX, USED };
+
+		size_t ReadAppMemInfo(APP_MEM_TYPE type)
+		{
+			PROCESS_MEMORY_COUNTERS_EX counters;
+			if (GetProcessMemoryInfo(GetCurrentProcess(), reinterpret_cast<PROCESS_MEMORY_COUNTERS*>(&counters), sizeof(counters)))
+			{
+				switch(type)
+				{
+					case APP_MEM_TYPE::VM_MAX return counters.PeakWorkingSetSize;
+					case APP_MEM_TYPE::USED: return counters.PrivateUsage;
+				}
+			}
+			Logger::PERF->error("Failed to get process memory info");
+			return 0;
+		}
+	}
+
+	size_t SystemInfo::GetSystemRam()
+	{
+		return ReadSystemMemInfo(MEM_TYPE::TOTAL_PHYS);
+	}
+
+	size_t SystemInfo::GetSystemRamAvailable()
+	{
+		return ReadSystemMemInfo(MEM_TYPE::AVAIL_PHYS);
+	}
+
+	size_t SystemInfo::GetAppRamMax()
+	{
+		return std::min(GetSystemRam(), GetAppVirtualMemoryMax());
+	}
+
+	size_t SystemInfo::GetAppRamAvailable()
+	{
+		return std::min(GetSystemRamAvailable(), GetAppVirtualMemoryMax() - GetAppRamUsed());
+	}
+
+	size_t SystemInfo::GetAppRamUsed()
+	{
+		return ReadAppMemInfo(APP_MEM_TYPE::USED);
+	}
+
+	size_t SystemInfo::GetAppVirtualMemoryMax()
+	{
+		return ReadAppMemInfo(APP_MEM_TYPE::VM_MAX);
+	}
+}