Race conditition when using Process RedirectStandardError and RedirectStandardOutput,

Race conditition when using Process RedirectStandardError and RedirectStandardOutput,

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Race conditition when using Process RedirectStandardError and RedirectStandardOutput,
Tag : chash , By : Erik
Date : November 27 2020, 11:01 PM

Does that help The problem was a timeout in certain situations. I needet to Kill the Process to avoid follow up issues.
            p.OutputDataReceived -= OutputDataReceived;
            p.ErrorDataReceived -= ErrorDataReceived;
            p = null;
            GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true);
    private string execute(string command, string arguments, int mstimeout)
        bool timeout = false;
        string report = string.Empty;
        StringBuilder output = new StringBuilder();
        StringBuilder error = new StringBuilder();
        Process p = new Process();
        DataReceivedEventHandler StoreError = (o, e) => { error.Append(e.Data); };
        DataReceivedEventHandler StoreOutput = (o, e) => { output.Append(e.Data); };
            p.StartInfo.FileName = command;
            p.StartInfo.Arguments = arguments;
            p.EnableRaisingEvents = true;
            p.StartInfo.CreateNoWindow = true;
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.RedirectStandardError = true;
            p.StartInfo.RedirectStandardOutput = true;
            p.OutputDataReceived += StoreOutput;
            p.ErrorDataReceived += StoreError;
            if (!p.WaitForExit(mstimeout))
                timeout = true;
                Debug.WriteLine("Process killed");

            report = output.ToString() + "\n" + error.ToString();
        if (timeout)
            throw new TimeoutException("Timeout during call: " + command + " " + arguments);
        return report;

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Process RedirectStandardOutput empty and DataReceivedEventArgs.Data is null

Tag : chash , By : mansoor
Date : March 29 2020, 07:55 AM
should help you out When running an application in console mode there are lines written to the console. , It's null, because you read the data in var outPut
Try following:
proc.OutputDataReceived += new DataReceivedEventHandler(HandleOutputData);
//var outPut = proc.StandardOutput.ReadToEnd();

C# process RedirectStandardOutput not redirecting

Tag : chash , By : doctorbigtime
Date : March 29 2020, 07:55 AM
will help you Might be as simple as disabling output buffering in your perl script. This is done using the $| special variable (see perlvar).
$| = 1;
print "Server1 \n";

Process.RedirectStandardOutput does not work

Tag : chash , By : UpperLuck
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further That is because all output goes to stderr instead of stdout, see source code
You should add a handler for Process.ErrorDataReceived and call Process.BeginErrorReadLine and things will start going smoothly.

Re-synchronize Process.RedirectStandardOutput

Tag : chash , By : Manu
Date : March 29 2020, 07:55 AM
should help you out The code that executes the nodejs process and reads its output should not need to know about the threading requirements of event subscribers. Make the subscriber satisfy its own requirements:
(a) =>
    Invoke(new Action(() => button1.Text = someValue)); //marshal to UI thread

process.startinfo.RedirectStandardOutput gives exception and process.waitforexit() hangs C# application

Tag : chash , By : Blight
Date : March 29 2020, 07:55 AM
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