I wrote a small program in C# NET a while back to keep a Java process running. I am about to deploy it to a bunch of servers and I am working on fixing up some of the code now. As it stands, I don't think I have this setup right.
What would be the best way to keep the process running that I am creating in my LaunchMinecraft() function? I want to have it so as long as my process is running, it continues to restart this process if it crashes.
static void Main(string[] args)
{
// Launch the Application
LaunchMinecraft("minecraft_server.jar", "512");
}
public static void LaunchMinecraft(string file, string memory)
{
string memParams = "-Xms" + memory + "M" + " -Xmx" + memory + "M ";
string args = memParams + "-jar " + file + " nogui";
ProcessStartInfo processInfo = new ProcessStartInfo("java.exe", args);
processInfo.CreateNoWindow = true;
processInfo.UseShellExecute = false;
processInfo.RedirectStandardOutput = true;
processInfo.RedirectStandardInput = true;
processInfo.RedirectStandardError = true;
try
{
using (Process minecraftProcess = Process.Start(processInfo))
{
// Store Process Globally to access elsewhere
JavaProcess = minecraftProcess;
// Creates a Repeating Poll Timer (30 Seconds)
// Use this to keep the Minecraft's Process Affinity/Priority the same as the Daemon
PollTimer = new System.Timers.Timer();
PollTimer.Elapsed += new ElapsedEventHandler(Event_PollProcess);
PollTimer.Interval = 5000;
PollTimer.Start();
Console.WriteLine("Minecraft Process Started.");
// Setup Callback for Redirected Output/Error Streams
minecraftProcess.OutputDataReceived += new DataReceivedEventHandler(Handler_ProcessOutput);
minecraftProcess.ErrorD开发者_StackOverflow社区ataReceived += new DataReceivedEventHandler(Handler_ProcessError);
// Steam Writer
streamWriter = minecraftProcess.StandardInput;
minecraftProcess.BeginOutputReadLine();
minecraftProcess.BeginErrorReadLine();
while (minecraftProcess.HasExited == false)
{
String strInput = Console.ReadLine();
SendProcessCmd(strInput);
}
minecraftProcess.WaitForExit();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
The Process class itself cant prevent your external program from shutting down, you have to use the Exited event as @Jalal mentiones or poll the HasExited property of the process.
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