Re: Multithreading - writing to same file C#

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Hi,

Use Lambert's sugestion to avoid the main thread to end,
Also I would change your code,

public class yyy
{

private object o = new object();
StreamWriter sw = File.AppendText(@"d:\text.txt") ;

public static void Main()
{
Thread t;
for(int i=1;i<=3;i++)
{
t = new Thread(new ThreadStart(new zzz().abc));
t.Start();

}
Console.ReadLine() ;
}

public void abc()
{
//Calls to DAL methods

lock(o)
{
sw.WriteLine( .... );
}
}


cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation



<mahendranepali@xxxxxxxxx> wrote in message
news:1126078025.950266.293010@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>I am making a simulator application that will simulate different
> concurrent users connecting to a database. the application creates
> different userkeys and pushes them to the database tables. The business
> procedures hence interpret the userkey as a seperate request and act
> accordingly. For this I need to check the response time to the DB for
> say thousands of concurrent users. So what I did created Threads in a
> Loop and each thread invoked the DAL Class to query the DB. I just had
> to log the response (time to return dataset) of the DAL methods and log
> them to a text file.
> this is a sample code for multithreads writing to the file.
>
> public class yyy
> {
>
> private Mutex mut = new Mutex();
>
> public static void Main()
> {
> Thread t;
> for(int i=1;i<=3;i++)
> {
> t = new Thread(new ThreadStart(new zzz().abc));
> t.Start();
> t.Join();
>
> }
>
> }
> public void abc()
> {
> //Calls to DAL methods
>
> this.WriteToFile();
> }
> private void WriteToFile()
> {
> mut.WaitOne();
>
> using (StreamWriter sw = File.AppendText(@"d:\text.txt"))
>
> try
> {
>
> sw.WriteLine(AppDomain.GetCurrentThreadId()) ;
> sw.Flush();
> sw.Close();
> }
> catch (Exception e)
> {
> Console.WriteLine("error:{0}", e);
> }
>
> finally
> {
> mut.ReleaseMutex();
> }
>
>
>
> }
> }
>
> The issue is that I have to use the Thread.Join() method else the main
> terminates. Hence not all threads execute. But if I use Thread.Join()
> then there are no concurrent users connecting. can anyone help me with
> this.
>
> Regards
> Mickey
>


.

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