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c# - StackOverflowException 与 C# 中的进程

转载 作者:行者123 更新时间:2023-12-04 23:09:12 26 4
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我有一个进程,它在控制台应用程序中运行。它永远运行。

几天后,应用程序因 StackOverflowException 而崩溃。

该应用程序的本质是我使用 FFMpeg.exe 启动进程并创建视频流的截图。它工作得很好,但当时只有几天。

我很确定这与 FFMpeg 或一些内部流程的处理有关。

这是代码

using ( Process ffmpegProcess = new Process() ) {

//arguments for running ffmpeg
ffmpegProcess.StartInfo.UseShellExecute = false;
ffmpegProcess.StartInfo.CreateNoWindow = true;
ffmpegProcess.StartInfo.RedirectStandardOutput = true;

//specific for our screenshots
ffmpegProcess.StartInfo.FileName = string.Concat( Environment.CurrentDirectory, Path.DirectorySeparatorChar, ffmpegProgramName );

try {
//todo: log this stopwatch somewhere perhaps
processWatch.Start();

//set arguments every time we want to create a new screen shot
ffmpegProcess.StartInfo.Arguments = string.Format( @"-y -i {0}{1} -threads 0 -ss 00:00:01.000 -f image2 -s 620x349 -vframes 1 ../../web/{2}.jpg", server, streamPath, slug );
ffmpegProcess.Start();
ffmpegProcess.WaitForExit( 500 );

Console.WriteLine( slug );
Console.WriteLine( processWatch.Elapsed );

processWatch.Reset();
runCount++;
cacheIndexer++;

//lets see how many spins we've had!
Console.WriteLine( string.Format( "SERVER CACHE INDEX : {0}", cacheIndexer ) );
Console.WriteLine( string.Format( "RUN : {0}", runCount ) );
Console.WriteLine( Environment.NewLine );

} catch ( Exception ex ) {
//Console.WriteLine( "Ex " + ex );
}
}

循环看起来像这样。
    public void RecurseTask() {
/*
You can try one of these, but you will se CPU usage go crazy and perhaps concurrency errors due IO blocking

Parallel.ForEach( _videoStreamSlugs, ( e ) => _videoStreamScreenShots.GrabScreenShot( e ) );

foreach ( var slug in _videoStreamSlugs ) {
Task.Run( () => _videoStreamScreenShots.GrabScreenShot( slug ) );
}
*/

//we want to grab screen shots for every slug in out slug list!
foreach ( var slug in _videoStreamSlugs ) {
_videoStreamScreenShots.GrabScreenShot( slug );
}

//sleep for a little while
Thread.Sleep( _recurseInterval );

//A heavy clean up!
//We do this, trying to avoid a stackoverflow excecption in the recursive method
//Please inspect this if problems arise
GC.Collect();

//lets grab over again
RecurseTask();
}

出于好奇,我添加了一个 GC.Collect 以查看它是否有所作为。

我没有做 Windows 服务。

最佳答案

在 RecurseTask 内部你总是调用 RecurseTask,显然,长时间运行它会抛出 StackOverflowException,你可以尝试更改为

public void RecurseTask() {
while(true)
{
/*
You can try one of these, but you will se CPU usage go crazy and perhaps concurrency errors due IO blocking

Parallel.ForEach( _videoStreamSlugs, ( e ) => _videoStreamScreenShots.GrabScreenShot( e ) );

foreach ( var slug in _videoStreamSlugs ) {
Task.Run( () => _videoStreamScreenShots.GrabScreenShot( slug ) );
}
*/

//we want to grab screen shots for every slug in out slug list!
foreach ( var slug in _videoStreamSlugs ) {
_videoStreamScreenShots.GrabScreenShot( slug );
}

//sleep for a little while
Thread.Sleep( _recurseInterval );

//A heavy clean up!
//We do this, trying to avoid a stackoverflow excecption in the recursive method
//Please inspect this if problems arise
//GC.Collect(); Not needed

//lets grab over again
}
}

关于c# - StackOverflowException 与 C# 中的进程,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30637452/

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