[Qt-interest] Waking-up a sleeping thread

[Harry Sfougaris]

Well I need to check a remote database server if there is data available (I can't use notify).
Since there are many ways this can fail , I need to do it in a thread.
I can't think of another way to do it.

Harry 

On 11 Ιουν 2010, at 10:34 π.μ., Scott Aron Bloom wrote:

> Don't use sleep.. 
> 
> One suggestion, that has worked for me.. rather than calling sleep..
> only start the thread when you have info to process.. otherwise exit
> out.
> 
> Scott
> 
> 
> 
> -----Original Message-----
> From: qt-interest-bounces at trolltech.com
> [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Harry Sfougaris
> Sent: Friday, June 11, 2010 12:23 AM
> To: qt-interest at trolltech.com
> Subject: [Qt-interest] Waking-up a sleeping thread
> 
> Is it possible to "wake-up" a thread, after calling sleep(secs) on it?
> I have a thread that periodically does a job. I have the following
> pseudocode in the run() function of my thread:
> ...
> while (!stopped) {
> 	sleep( jobInterval);
> 	if (stopped) break;
> 	doLengthyTask();
> }
> ...
> my thread deconstructor is
> myThread::~myThread() {
>    stopped = true;
>    wait();
> }
> 
> My problem is when the user tries to exit the app, the program will
> stall for up to jobInterval seconds, as the thread might be sleeping,
> and the deconstructor waits for it.
> Is there another way to handle this?
> 
> Thanks,
> Harry
> 
> 
> 
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