public override async Task <OSInfo> GetOSInfoAsync(CancellationToken cancellationToken)
{
OSInfo osInfo = default(OSInfo);
(int exitCode, List <string> outputLines) = await ExecuteProcessAsync("lsb_release", "-d");
if (exitCode == 0 && outputLines.Count == 1)
{
/*
** Example:
** Description:\tUbuntu 18.04.2 LTS
*/
osInfo.Name = outputLines[0].Split(':', count: 2)[1].Trim();
}
osInfo.Version = await File.ReadAllTextAsync("/proc/version");
osInfo.Language = string.Empty;
osInfo.Status = "OK";
osInfo.NumberOfProcesses = Process.GetProcesses().Length;
// Source code: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/fs/proc/meminfo.c
Dictionary <string, ulong> memInfo = LinuxProcFS.ReadMemInfo();
osInfo.TotalVisibleMemorySizeKB = memInfo[MemInfoConstants.MemTotal];
osInfo.FreePhysicalMemoryKB = memInfo[MemInfoConstants.MemFree];
osInfo.AvailableMemoryKB = memInfo[MemInfoConstants.MemAvailable];
// On Windows, TotalVirtualMemorySize = TotalVisibleMemorySize + SizeStoredInPagingFiles.
// SizeStoredInPagingFiles - Total number of kilobytes that can be stored in the operating system paging files—0 (zero)
// indicates that there are no paging files. Be aware that this number does not represent the actual physical size of the paging file on disk.
// https://docs.microsoft.com/en-us/windows/win32/cimwin32prov/win32-operatingsystem
osInfo.TotalVirtualMemorySizeKB = osInfo.TotalVisibleMemorySizeKB + memInfo[MemInfoConstants.SwapTotal];
osInfo.FreeVirtualMemoryKB = osInfo.FreePhysicalMemoryKB + memInfo[MemInfoConstants.SwapFree];
(float uptime, float idleTime) = await LinuxProcFS.ReadUptimeAsync();
osInfo.LastBootUpTime = DateTime.UtcNow.AddSeconds(-uptime).ToString("o");
try
{
osInfo.InstallDate = new DirectoryInfo("/var/log/installer").CreationTimeUtc.ToString("o");
}
catch (IOException)
{
osInfo.InstallDate = "N/A";
}
return(osInfo);
}
public override Task <OSInfo> GetOSInfoAsync(CancellationToken cancellationToken)
{
ManagementObjectSearcher win32OsInfo = null;
ManagementObjectCollection results = null;
OSInfo osInfo = default(OSInfo);
try
{
win32OsInfo = new ManagementObjectSearcher("SELECT Caption,Version,Status,OSLanguage,NumberOfProcesses,FreePhysicalMemory,FreeVirtualMemory,TotalVirtualMemorySize,TotalVisibleMemorySize,InstallDate,LastBootUpTime FROM Win32_OperatingSystem");
results = win32OsInfo.Get();
foreach (var prop in results)
{
cancellationToken.ThrowIfCancellationRequested();
foreach (var p in prop.Properties)
{
cancellationToken.ThrowIfCancellationRequested();
string name = p.Name;
string value = p.Value.ToString();
if (string.IsNullOrEmpty(name) || string.IsNullOrEmpty(value))
{
continue;
}
switch (name.ToLowerInvariant())
{
case "caption":
osInfo.Name = value;
break;
case "numberofprocesses":
if (int.TryParse(value, out int numProcesses))
{
osInfo.NumberOfProcesses = numProcesses;
}
else
{
osInfo.NumberOfProcesses = -1;
}
break;
case "status":
osInfo.Status = value;
break;
case "oslanguage":
osInfo.Language = value;
break;
case "version":
osInfo.Version = value;
break;
case "installdate":
osInfo.InstallDate = ManagementDateTimeConverter.ToDateTime(value).ToUniversalTime().ToString("o");
break;
case "lastbootuptime":
osInfo.LastBootUpTime = ManagementDateTimeConverter.ToDateTime(value).ToUniversalTime().ToString("o");
break;
case "freephysicalmemory":
osInfo.AvailableMemoryKB = ulong.Parse(value);
break;
case "freevirtualmemory":
osInfo.FreeVirtualMemoryKB = ulong.Parse(value);
break;
case "totalvirtualmemorysize":
osInfo.TotalVirtualMemorySizeKB = ulong.Parse(value);
break;
case "totalvisiblememorysize":
osInfo.TotalVisibleMemorySizeKB = ulong.Parse(value);
break;
}
}
}
}
catch (ManagementException)
{
}
finally
{
results?.Dispose();
win32OsInfo?.Dispose();
}
return(Task.FromResult(osInfo));
}