CODEWITHSUNDEEP
c#multithreading
sharafi
sharafi

Reputation: 531

thread pause and resume

I have a multithreaded program. I want start the new BackgroundWorker and pause the current thread. Then I want resume previous thread in the new BackgroundWorker. I am programming in C#.

I have a big project and cannot put my code here.

Upvotes: 2

Views: 471

Answers (3)

Ringo
Ringo

Reputation: 3965

Here is my sample code for you! I'm not so sure it useful for your project, but this is my idea. hope helpful.

 BackgroundWorker bwExportLogFile = new BackgroundWorker();

        private void ExportLogFile() {
            bwExportLogFile.DoWork += bwExportLogFile_DoWork;
            bwExportLogFile.RunWorkerCompleted += bwExportLogFile_RunWorkerCompleted;
            bwExportLogFile.ProgressChanged += bwExportLogFile_ProgressChanged;
            bwExportLogFile.RunWorkerAsync();
            bwExportLogFile.WorkerReportsProgress = true;
            bwExportLogFile.WorkerSupportsCancellation = true;
        }

        void bwExportLogFile_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            BackgroundWorker bw = sender as BackgroundWorker;
            if(some thing is true here){
                bw.CancelAsync();
            }
        }

So when you want to run thread in BackgroundWorker again just call this:

bwExportLogFile.RunWorkerAsync();

Upvotes: 0

Ringo
Ringo

Reputation: 3965

Try to set WorkerSupportsCancellation = true and in ProgressChanged event you can do like this:

 BackgroundWorker bw = sender as BackgroundWorker;
 bw.CancelAsync();
 bw.RunWorkerAsync();

Upvotes: 0

Adil
Adil

Reputation: 148110

You can use AutoResetEvent and use WaitOne to hold the parent thread. Call AutoResetEvent.Set method from spawned thread to resume the execution of parent (main) thread.

childThread.Start();
autoResetEvent.WaitOne();

In child (spawned thread)

private void SpawnedThread()
{
      //your code
     autoResetEvent.Set(); //will resume the execution after WaitOne(), may be under some condition.
}

You can use overloaded version of WaitOne to give the maximum wait time. The execution will resume of Set method is not being called until the give time.

Upvotes: 1

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