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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Tango.Core;
using Tango.Core.DI;
using Tango.Integration.ExternalBridge;
using Tango.PPC.Common.ExternalBridge;
using Tango.PPC.Shared.Performance;
namespace Tango.PPC.Common.Performance
{
[TangoCreateWhenRegistered]
public class DefaultPerformanceService : ExtendedObject, IPerformanceService
{
#region Nested Classes
public static class PerformanceInfo
{
[DllImport("psapi.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetPerformanceInfo([Out] out PerformanceInformation PerformanceInformation, [In] int Size);
[StructLayout(LayoutKind.Sequential)]
public struct PerformanceInformation
{
public int Size;
public IntPtr CommitTotal;
public IntPtr CommitLimit;
public IntPtr CommitPeak;
public IntPtr PhysicalTotal;
public IntPtr PhysicalAvailable;
public IntPtr SystemCache;
public IntPtr KernelTotal;
public IntPtr KernelPaged;
public IntPtr KernelNonPaged;
public IntPtr PageSize;
public int HandlesCount;
public int ProcessCount;
public int ThreadCount;
}
public static Int64 GetPhysicalAvailableMemoryInMiB()
{
PerformanceInformation pi = new PerformanceInformation();
if (GetPerformanceInfo(out pi, Marshal.SizeOf(pi)))
{
return Convert.ToInt64((pi.PhysicalAvailable.ToInt64() * pi.PageSize.ToInt64() / 1048576));
}
else
{
return -1;
}
}
public static Int64 GetTotalMemoryInMiB()
{
PerformanceInformation pi = new PerformanceInformation();
if (GetPerformanceInfo(out pi, Marshal.SizeOf(pi)))
{
return Convert.ToInt64((pi.PhysicalTotal.ToInt64() * pi.PageSize.ToInt64() / 1048576));
}
else
{
return -1;
}
}
}
#endregion
private class PerformanceClient
{
public ExternalBridgeReceiver Receiver { get; set; }
public String Token { get; set; }
}
private List<PerformanceClient> _clients;
private PerformancePackage _package;
private bool _isStarted;
private Thread _performanceThread;
public bool Enabled { get; set; } = true;
public DefaultPerformanceService(IPPCExternalBridgeService externalBridge)
{
_package = new PerformancePackage();
_clients = new List<PerformanceClient>();
externalBridge.RegisterRequestHandler(this);
}
[ExternalBridgeRequestHandlerMethod(typeof(StartPerformanceUpdatesRequest), RequestHandlerLoggingMode.LogRequestNameAndContent)]
public async Task OnStartPerformanceUpdatesRequest(StartPerformanceUpdatesRequest request, String token, ExternalBridgeReceiver receiver)
{
this.ThrowIfDisabled();
if (!_clients.Exists(x => x.Receiver == receiver))
{
_clients.Add(new PerformanceClient() { Receiver = receiver, Token = token });
OnReceiversChanged();
}
await receiver.SendGenericResponse(new StartPerformanceUpdatesResponse() { Package = _package }, token);
}
public void OnReceiverDisconnected(ExternalBridgeReceiver receiver)
{
_clients.RemoveAll(x => x.Receiver == receiver);
OnReceiversChanged();
}
private void OnReceiversChanged()
{
if (_clients.Count > 0 && !_isStarted)
{
_isStarted = true;
_performanceThread = new Thread(PerformanceThreadMethod);
_performanceThread.IsBackground = true;
_performanceThread.Start();
}
else if (_clients.Count == 0 && _isStarted)
{
_isStarted = false;
}
}
private async void PerformanceThreadMethod()
{
while (_isStarted)
{
try
{
_package.ApplicationCPU = (int)GetAppCPU();
_package.CPU = (int)GetTotalCPU();
_package.ApplicationRAM = (int)BytesToMegaBytes(GetAppRam());
_package.MaxRAM = (int)BytesToMegaBytes((long)new Microsoft.VisualBasic.Devices.ComputerInfo().TotalPhysicalMemory);
_package.RAM = _package.MaxRAM - (int)PerformanceInfo.GetPhysicalAvailableMemoryInMiB();
DriveInfo info = new DriveInfo("C");
_package.DiskCapacity = (int)BytesToMegaBytes(info.TotalSize);
_package.AvailableDiskSpace = (int)BytesToMegaBytes(info.AvailableFreeSpace);
_package.DateTime = DateTime.Now;
foreach (var client in _clients.ToList().Where(x => x.Receiver.State == Transport.TransportComponentState.Connected))
{
try
{
await client.Receiver.SendGenericResponse(new StartPerformanceUpdatesResponse() { Package = _package }, client.Token);
}
catch (Exception ex)
{
LogManager.Log(ex, "Error sending performance package.");
}
}
}
catch (Exception ex)
{
LogManager.Log(ex, "Error creating performance package.");
}
Thread.Sleep(200);
}
}
#region Helpers
private float BytesToMegaBytes(long bytes)
{
return bytes / 1024f / 1024f;
}
public float GetAppCPU()
{
PerformanceCounter cpuCounter = new PerformanceCounter();
cpuCounter.CategoryName = "Process";
cpuCounter.CounterName = "% Processor Time";
cpuCounter.InstanceName = Process.GetCurrentProcess().ProcessName;
// will always start at 0
float firstValue = cpuCounter.NextValue();
System.Threading.Thread.Sleep(1000);
// now matches task manager reading
float secondValue = cpuCounter.NextValue();
return secondValue / Environment.ProcessorCount;
}
public float GetTotalCPU()
{
PerformanceCounter cpuCounter = new PerformanceCounter();
cpuCounter.CategoryName = "Processor";
cpuCounter.CounterName = "% Processor Time";
cpuCounter.InstanceName = "_Total";
// will always start at 0
float firstValue = cpuCounter.NextValue();
System.Threading.Thread.Sleep(1000);
// now matches task manager reading
float secondValue = cpuCounter.NextValue();
return secondValue;
}
public long GetAppRam()
{
Process proc = Process.GetCurrentProcess();
return proc.PrivateMemorySize64;
}
#endregion
}
}
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