ApprovalTests.Utilities.ParentProcessUtils.ParentProcess C# (CSharp) Method

        private static Process ParentProcess(this Process process)
        {
            if (OsUtils.IsUnixOs())
            {
                // TODO: find a way to implement this in mono on a mac/linux machine
                return null;
            }
            var parentPid = 0;
            var processPid = process.Id;
            const uint TH32_CS_SNAPPROCESS = 2;
            // Take snapshot of processes
            var hSnapshot = CreateToolhelp32Snapshot(TH32_CS_SNAPPROCESS, 0);
            if (hSnapshot == IntPtr.Zero)
            {
                return null;
            }

            var procInfo = new PROCESSENTRY32 {dwSize = (uint) Marshal.SizeOf(typeof (PROCESSENTRY32))};


            // Read first
            if (Process32First(hSnapshot, ref procInfo) == false)
            {
                return null;
            }

            // Loop through the snapshot
            do
            {
                // If it's me, then ask for my parent.
                if (processPid == procInfo.th32ProcessID)
                {
                    parentPid = (int) procInfo.th32ParentProcessID;
                }
            } while (parentPid == 0 && Process32Next(hSnapshot, ref procInfo)); // Read next

            if (parentPid <= 0)
            {
                return null;
            }

            try
            {
                return Process.GetProcessById(parentPid);
            }
            catch (ArgumentException)
            {
                //Process with an Id of X is not running
                return null;
            }
        }