Start a new thread from an existing thread, which was started from atimer

Hi,

It turns out that I must start a new thread from an existing thread
that was started from a timer.

In other words, the relations are described in the code below:

void Main()
{

mTimer = new Timer(new TimerCallback(CheckHistoricalData), null,
15000, 15000);

}

// Callback for the timer
void CheckHistoricalData(object state)
{

ThreadPool.QueueUserWorkItem(new WaitCallback(GetCashByList), null);

// Code omitted here
}

void GetCashByList(object o)
{

// Code omitted here
if (cashR.CashForToday <= cashR.LowerBound)
{

// Start a new thread to display messagebox
// Pass both list and cash for sector
ThreadPool.QueueUserWorkItem(new WaitCallback
(ShowSectorCashMessage), cashR);

}
}

I'm concerned that my program may crash because each thread is at a
different level and there are so many levels of threads. Anyone can
advice me if this is safe? Is there anything I can do to make the
program robust?

Curious <fir5tsight@xxxxxx> wrote:

Quote:

> It turns out that I must start a new thread from an existing thread
> that was started from a timer.
>
> In other words, the relations are described in the code below:

<snip>

Quote:

> I'm concerned that my program may crash because each thread is at a
> different level and there are so many levels of threads. Anyone can
> advice me if this is safe? Is there anything I can do to make the
> program robust?

There's no such thing as a thread "level". There are just threads -
admittedly there are threads in the thread-pool and threads which
aren't in the thread-pool, but I see nothing in the code you've posted
which will crash the system. You should look at whether you *really*
need all those threads though, just for the sake of understanding the
complexity of the system.

--
Jon Skeet - <skeet@xxxxxx>
Web site: http://www.pobox.com/~skeet
Blog: http://www.msmvps.com/jon.skeet
C# in Depth: http://csharpindepth.com