NeoFT/Win32Util/GlobalMemoryInfo.cs

using System;
using System.Runtime.InteropServices;

namespace nft.win32util
{
        /// <summary>
        /// Get global memory informations.
        /// each values are obtained when the object created. 
        /// </summary>
        public class GlobalMemoryInfo
        {

                [DllImport("kernel32.dll")]
                extern static void GlobalMemoryStatus(ref MemoryStatus lpBuffer) ;

                struct MemoryStatus
                {               
                        public int dwLength ;
                        public int dwMemoryLoad ;
                        public int dwTotalPhys ; // physical memory total
                        public int dwAvailPhys ; // physical memory available
                        public int dwTotalPageFile ; // page files total
                        public int dwAvailPageFile ; // page files available
                        public int dwTotalVirtual ; // virtual memory total
                        public int dwAvailVirtual ; // virtual memory available
                }
                
                private readonly MemoryStatus msinfo;

                public GlobalMemoryInfo()
                {
                        msinfo = new MemoryStatus();
                        msinfo.dwLength = Marshal.SizeOf(msinfo);                       
                        GlobalMemoryStatus(ref msinfo);
                }

                public int PhysicalMemTotal     { get { return msinfo.dwTotalPhys; } }
                public int PhysicalMemAvailable { get { return msinfo.dwAvailPhys; } }
                public int PageFileTotal { get { return msinfo.dwTotalPageFile; } }
                public int PageFileAvailable { get { return msinfo.dwAvailPageFile; } }
                public int VirtualMemTotal      { get { return msinfo.dwTotalVirtual; } }
                public int VirtualMemAvailable  { get { return msinfo.dwAvailVirtual; } }
        }
}