AcTools.Utils.Helpers.ProcessWrapper.GetProcessHandle C# (CSharp) Метод

        IntPtr GetProcessHandle(Kernel32.ProcessAccessFlags access, bool throwIfExited) {
            if (_haveProcessHandle) {
                if (throwIfExited) {
                    // Since haveProcessHandle is true, we know we have the process handle
                    // open with at least SYNCHRONIZE access, so we can wait on it with 
                    // zero timeout to see if the process has exited.
                    ProcessWaitHandle waitHandle = null;
                    try {
                        waitHandle = new ProcessWaitHandle(_processHandle);
                        if (waitHandle.WaitOne(0, false)) {
                            throw new InvalidOperationException("Process has exited");
                        }
                    } finally {
                        waitHandle?.Close();
                    }
                }
                return _processHandle;
            }

            var handle = Kernel32.OpenProcess(access, false, _inner.Id);
            if (throwIfExited && (access & Kernel32.ProcessAccessFlags.QueryInformation) != 0) {
                int exitCode;
                if (Kernel32.GetExitCodeProcess(handle, out exitCode) && exitCode != Kernel32.STILL_ACTIVE) {
                    throw new InvalidOperationException("Process has exited");
                }
            }

            return handle;
        }