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  4. Getting free physical Memory ?

Getting free physical Memory ?

Scheduled Pinned Locked Moved C#
performancehelpquestion
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  • B Bhupi Bhai

    Yes, I guess it's possible using SDK Memory related API's. Can't recall the exact API's though (had used them some 5yrs back :doh:), try finding them on MSDN. Hummm .... can recall of one called "GetSystemInfo" which returns info about current system. Good luck !! Regards, Bhupi Bhai.

    M Offline
    M Offline
    Martin 0
    wrote on last edited by
    #6

    Thanks very much in advance! I'll give it a try (GetSystemInfo in kernel32.dll)! Martin

    1 Reply Last reply
    0
    • A Anton Afanasyev

      gaaaah whats with people and no sense of humour. hmm, maybe its due to me having to be in bed by now... anyways, what i mean was that you were asking where you could get free RAM, and searching in google didnt help. as in, nobody willing to give you free ram. /me holds up "LAUGH NOW" sign...


      :badger:

      M Offline
      M Offline
      Martin 0
      wrote on last edited by
      #7

      If it makes youre day better, I send you: :laugh::laugh:

      Anton Afanasyev wrote:

      whats with people and no sense of humour

      Maybe humor like that makes more fun if it is posted togetter with a real answer! All the best, Martin

      A 1 Reply Last reply
      0
      • B Bhupi Bhai

        Yes, I guess it's possible using SDK Memory related API's. Can't recall the exact API's though (had used them some 5yrs back :doh:), try finding them on MSDN. Hummm .... can recall of one called "GetSystemInfo" which returns info about current system. Good luck !! Regards, Bhupi Bhai.

        M Offline
        M Offline
        Martin 0
        wrote on last edited by
        #8

        Hello, Had no luck with that. GetSystemInfo returns a:

        	\[StructLayout(LayoutKind.Sequential)\]
        	class SYSTEM\_INFO
        	{
        		public ushort wProcessorArchitecture;
        		public ushort wReserved;
        		public uint dwPageSize;
        		public IntPtr lpMinimumApplicationAddress;
        		public IntPtr lpMaximumApplicationAddress;
        		public IntPtr dwActiveProcessorMask;
        		public uint dwNumberOfProcessors;
        		public uint dwProcessorType;
        		public uint dwAllocationGranularity;
        		public ushort wProcessorLevel;
        		public ushort wProcessorRevision;
        	}
        

        I implemented it like that:

        	\[DllImport("kernel32.dll", CharSet = CharSet.Unicode,CallingConvention = CallingConvention.Winapi, EntryPoint = "GetSystemInfo")\]
        	private static extern void GetSystemInfo(\[In,MarshalAs(UnmanagedType.LPStruct)\]SYSTEM\_INFO pSysInfo);
        

        And called it like that:

        		SYSTEM\_INFO sysinfo = new SYSTEM\_INFO();
        		GetSystemInfo(sysinfo);
        

        But I didn't found a member that fits me needs:~ If I made something wrong, please let me know. But again thanks for youre time. Martin

        B 1 Reply Last reply
        0
        • M Martin 0

          Hello, Had no luck with that. GetSystemInfo returns a:

          	\[StructLayout(LayoutKind.Sequential)\]
          	class SYSTEM\_INFO
          	{
          		public ushort wProcessorArchitecture;
          		public ushort wReserved;
          		public uint dwPageSize;
          		public IntPtr lpMinimumApplicationAddress;
          		public IntPtr lpMaximumApplicationAddress;
          		public IntPtr dwActiveProcessorMask;
          		public uint dwNumberOfProcessors;
          		public uint dwProcessorType;
          		public uint dwAllocationGranularity;
          		public ushort wProcessorLevel;
          		public ushort wProcessorRevision;
          	}
          

          I implemented it like that:

          	\[DllImport("kernel32.dll", CharSet = CharSet.Unicode,CallingConvention = CallingConvention.Winapi, EntryPoint = "GetSystemInfo")\]
          	private static extern void GetSystemInfo(\[In,MarshalAs(UnmanagedType.LPStruct)\]SYSTEM\_INFO pSysInfo);
          

          And called it like that:

          		SYSTEM\_INFO sysinfo = new SYSTEM\_INFO();
          		GetSystemInfo(sysinfo);
          

          But I didn't found a member that fits me needs:~ If I made something wrong, please let me know. But again thanks for youre time. Martin

          B Offline
          B Offline
          Bhupi Bhai
          wrote on last edited by
          #9

          Yes, ur on the right track. But I am sorry can't recall the exact API for it. You will have to do some more rnd on this. Regards, Bhupi Bhai.

          M 1 Reply Last reply
          0
          • M Martin 0

            Hello, I would like to know if it's possible (and how) to get the free memory (RAM). I searched in google and here on the forum but had no luck so far. (It's also quit difficult to search for "free memory" ) Thanks for youre time and help, Martin

            L Offline
            L Offline
            lmoelleb
            wrote on last edited by
            #10

            I would suspect you can get the info though WMI. Using WMI from C# is fairly simple - you should be able to get a sample from Google. I would probably try to split the search into two: 1) How to use WMI from C# 2) How to get the free memory though WMI (in any language) just in case you can't easily find an example getting the free memory from C#.

            M 1 Reply Last reply
            0
            • L lmoelleb

              I would suspect you can get the info though WMI. Using WMI from C# is fairly simple - you should be able to get a sample from Google. I would probably try to split the search into two: 1) How to use WMI from C# 2) How to get the free memory though WMI (in any language) just in case you can't easily find an example getting the free memory from C#.

              M Offline
              M Offline
              Martin 0
              wrote on last edited by
              #11

              Hello, I think I found it 5minutes ago. But I will need it in future. Thank you. All the best, Martin

              B 1 Reply Last reply
              0
              • M Martin 0

                Hello, I would like to know if it's possible (and how) to get the free memory (RAM). I searched in google and here on the forum but had no luck so far. (It's also quit difficult to search for "free memory" ) Thanks for youre time and help, Martin

                M Offline
                M Offline
                Martin 0
                wrote on last edited by
                #12

                Got it now!:-> Here is what I'm using now:

                	\[StructLayout(LayoutKind.Sequential)\]
                	class MEMORYSTATUS
                	{
                		public IntPtr dwLength;
                		public IntPtr dwMemoryLoad;
                		public IntPtr dwTotalPhys;
                		public IntPtr dwAvailPhys;
                		public IntPtr dwTotalPageFile;
                		public IntPtr dwAvailPageFile;
                		public IntPtr dwTotalVirtual;
                		public IntPtr dwAvailVirtual;
                	}
                
                	\[DllImport("kernel32.dll", CharSet = CharSet.Unicode,CallingConvention = CallingConvention.Winapi, EntryPoint = "GlobalMemoryStatus")\]
                	private static extern void GlobalMemoryStatus(\[In,MarshalAs(UnmanagedType.LPStruct)\]MEMORYSTATUS lpBuffer);
                

                Maybe somebody needs it. Thanks for the replies. All the best, Martin

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                • B Bhupi Bhai

                  Yes, ur on the right track. But I am sorry can't recall the exact API for it. You will have to do some more rnd on this. Regards, Bhupi Bhai.

                  M Offline
                  M Offline
                  Martin 0
                  wrote on last edited by
                  #13

                  Found it! GlobalMemoryStatus from kernel32.dll Thanks again!

                  1 Reply Last reply
                  0
                  • M Martin 0

                    Hello, I think I found it 5minutes ago. But I will need it in future. Thank you. All the best, Martin

                    B Offline
                    B Offline
                    Bhupi Bhai
                    wrote on last edited by
                    #14

                    Yes, lmoelleb (is that ur name) is right. Using WMI in C# you can get Free Physical Memory. ManagementObjectSearcher query = new ManagementObjectSearcher("SELECT * FROM Win32_OperatingSystem"); ManagementObjectCollection queryCollection1 = query.Get(); foreach(ManagementObject mo in queryCollection1 ) { Console.WriteLine("Free Physical Memory : " + mo["freephysicalmemory"].ToString()); } Regards, Bhupi Bhai.

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                    • M Martin 0

                      If it makes youre day better, I send you: :laugh::laugh:

                      Anton Afanasyev wrote:

                      whats with people and no sense of humour

                      Maybe humor like that makes more fun if it is posted togetter with a real answer! All the best, Martin

                      A Offline
                      A Offline
                      Anton Afanasyev
                      wrote on last edited by
                      #15

                      The sad thing is, I replied to what I thought he meant...then later, adapted that answer to the situation. heh.I guess I deserved those 1 votes.


                      :badger:

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