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Thread.Sleep...

Hi,

Currently I have a thread thats spinning and doing a
Thread.Sleep(so meTime).

I was thinking of changing this to Thread.Sleep(Ti meout.Infinite) ; then
when I have actual data in a collection to process in this thread, I was
going to do a _thread.Interru pt(); Would this be a better approach to
spinning a thread on ?
Jul 21 '05 #1
26 2389
news.microsoft. com <di********@dis cussion.microso ft.com> wrote:
Currently I have a thread thats spinning and doing a
Thread.Sleep(so meTime).

I was thinking of changing this to Thread.Sleep(Ti meout.Infinite) ; then
when I have actual data in a collection to process in this thread, I was
going to do a _thread.Interru pt(); Would this be a better approach to
spinning a thread on ?


A better approach still would be to use Monitor.Wait and Monitor.Pulse.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
Jul 21 '05 #2
Jon,
how long you been writing thread code?

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"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** *************** *@msnews.micros oft.com...
news.microsoft. com <di********@dis cussion.microso ft.com> wrote:
Currently I have a thread thats spinning and doing a
Thread.Sleep(so meTime).

I was thinking of changing this to Thread.Sleep(Ti meout.Infinite) ; then when I have actual data in a collection to process in this thread, I was
going to do a _thread.Interru pt(); Would this be a better approach to
spinning a thread on ?


A better approach still would be to use Monitor.Wait and Monitor.Pulse.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Jul 21 '05 #3
You can use the Q.Sychronized wrapper and not have to use lock(q) blah

The only time u need to use the lock(q) is when you are using IEnumerator as
its intrisincally blah cant spell not thread safe.

So the simpler approach in a code base would be to sleep infinte and then
interrupt that.

"Alvin Bruney" <vapordan_spam_ me_not@hotmail_ no_spamhotmail. com> wrote in
message news:eZ******** ******@TK2MSFTN GP09.phx.gbl...
Jon,
how long you been writing thread code?

--
-----------
Got TidBits?
Get it here: www.networkip.net/tidbits
"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** *************** *@msnews.micros oft.com...
news.microsoft. com <di********@dis cussion.microso ft.com> wrote:
Currently I have a thread thats spinning and doing a
Thread.Sleep(so meTime).

I was thinking of changing this to Thread.Sleep(Ti meout.Infinite) ; then when I have actual data in a collection to process in this thread, I was going to do a _thread.Interru pt(); Would this be a better approach to spinning a thread on ?


A better approach still would be to use Monitor.Wait and Monitor.Pulse.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too


Jul 21 '05 #4
IF you need to use lock on a colleciton object you use the SynRoot. Why
bother with all that Monitor stuff and lock when you dont need to?
"news.microsoft .com" <di********@dis cussion.microso ft.com> wrote in message
news:u1******** ******@TK2MSFTN GP10.phx.gbl...
You can use the Q.Sychronized wrapper and not have to use lock(q) blah

The only time u need to use the lock(q) is when you are using IEnumerator as its intrisincally blah cant spell not thread safe.

So the simpler approach in a code base would be to sleep infinte and then
interrupt that.

"Alvin Bruney" <vapordan_spam_ me_not@hotmail_ no_spamhotmail. com> wrote in
message news:eZ******** ******@TK2MSFTN GP09.phx.gbl...
Jon,
how long you been writing thread code?

--
-----------
Got TidBits?
Get it here: www.networkip.net/tidbits
"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** *************** *@msnews.micros oft.com...
news.microsoft. com <di********@dis cussion.microso ft.com> wrote:
> Currently I have a thread thats spinning and doing a
> Thread.Sleep(so meTime).
>
> I was thinking of changing this to Thread.Sleep(Ti meout.Infinite) ;

then
> when I have actual data in a collection to process in this thread, I was > going to do a _thread.Interru pt(); Would this be a better approach to > spinning a thread on ?

A better approach still would be to use Monitor.Wait and Monitor.Pulse.
--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too



Jul 21 '05 #5
I dont want it to be spinning all the time at 100% CPU, i want it to rest
then once its interrupted, to start to spin a predefined cycle rate using
Sleep(blah) then once its empty, to go infinite again.
"Alvin Bruney" <vapordan_spam_ me_not@hotmail_ no_spamhotmail. com> wrote in
message news:eZ******** ******@TK2MSFTN GP09.phx.gbl...
Jon,
how long you been writing thread code?

--
-----------
Got TidBits?
Get it here: www.networkip.net/tidbits
"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** *************** *@msnews.micros oft.com...
news.microsoft. com <di********@dis cussion.microso ft.com> wrote:
Currently I have a thread thats spinning and doing a
Thread.Sleep(so meTime).

I was thinking of changing this to Thread.Sleep(Ti meout.Infinite) ; then when I have actual data in a collection to process in this thread, I was going to do a _thread.Interru pt(); Would this be a better approach to spinning a thread on ?


A better approach still would be to use Monitor.Wait and Monitor.Pulse.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too


Jul 21 '05 #6
You're right that the Thread.Interrup t() approach is better than a
Thread.Sleep(so meTime) loop. The only thing is that as I'm sure you know,
Thread.Interrup t() causes an exception to be thrown on the specified
thread... not really a problem if you catch it, but from what I read,
throwing/catching exceptions over and over again is a somewhat expensive and
inefficient thing to do.

Perhaps try a more traditional approach: Create an AutoResetEvent object
and have your worker thread call Wait() against that event object. The
thread then goes to Sleep (0% CPU utilization) until the event is "signaled"
by another thread. So when your program determines that there is work to be
done, it signals the event (see AutoResetEvent. Set()) and your worker thread
instantly "wakes up" to do its thing.

David

"news.microsoft .com" <di********@dis cussion.microso ft.com> wrote in message
news:O4******** ******@TK2MSFTN GP10.phx.gbl...
Hi,

Currently I have a thread thats spinning and doing a
Thread.Sleep(so meTime).

I was thinking of changing this to Thread.Sleep(Ti meout.Infinite) ; then
when I have actual data in a collection to process in this thread, I was
going to do a _thread.Interru pt(); Would this be a better approach to
spinning a thread on ?

Jul 21 '05 #7
Alvin Bruney <vapordan_spam_ me_not@hotmail_ no_spamhotmail. com> wrote:
how long you been writing thread code?


A fair time - why?

I'm suggesting Monitor.Wait/Pulse because they (along with
Manual/AutoResetEvents ) are specifically designed for exactly this kind
of thing.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
Jul 21 '05 #8
a fair time? what's that 2 days? 2 months? 2 years?
am asking when you started to actually write it, not when you first knew it
existed or heard about it.

--
-----------
Got TidBits?
Get it here: www.networkip.net/tidbits
"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** **************@ msnews.microsof t.com...
Alvin Bruney <vapordan_spam_ me_not@hotmail_ no_spamhotmail. com> wrote:
how long you been writing thread code?


A fair time - why?

I'm suggesting Monitor.Wait/Pulse because they (along with
Manual/AutoResetEvents ) are specifically designed for exactly this kind
of thing.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Jul 21 '05 #9
Alvin Bruney <vapordan_spam_ me_not@hotmail_ no_spamhotmail. com> wrote:
a fair time? what's that 2 days? 2 months? 2 years?
Longer than that.
am asking when you started to actually write it, not when you first knew it
existed or heard about it.


*Started* to write stuff using threads? About 9 years ago, when I first
started writing Java. Started thinking seriously about it and really
examining things carefully? About 4 years ago.

Again I ask: why do you want to know?

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
Jul 21 '05 #10

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