Home » U++ Library support » U++ MT-multithreading and servers » MT app hangs
MT app hangs [message #23995] |
Wed, 16 December 2009 00:29 |
mdelfede
Messages: 1307 Registered: September 2007
|
Ultimate Contributor |
|
|
This app :
#include <CtrlLib/CtrlLib.h>
using namespace Upp;
class TestThread : public TopWindow
{
protected:
bool stop;
void buttonCb(void);
Thread thr;
virtual void thrCb(void);
ProgressIndicator progress;
Button button;
StatusBar status;
public:
typedef TestThread CLASSNAME;
TestThread();
};
void TestThread::thrCb(void)
{
{
GuiLock __;
status.Set("Running, " + FormatInt(thr.GetCount()) + " threads");
}
for(;;)
{
{
GuiLock __;
if(progress < 100)
progress++;
else
progress = 0;
if(stop)
break;
}
usleep(100000);
}
{
GuiLock __;
status.Set("Idle....");
}
}
void TestThread::buttonCb(void)
{
if(stop)
{
stop = false;
button.SetLabel("STOP");
thr.Run(THISBACK(thrCb));
}
else
{
stop = true;
thr.Wait();
button.SetLabel("START");
}
}
TestThread::TestThread()
{
SetRect(0, 0, 300, 150);
Add(button);
button.TopPos(90, 30).HCenterPos(100);
button.SetLabel("START");
Add(progress);
progress.TopPos(30, 40).HCenterPos(250);
progress.Set(0, 100);
AddFrame(status);
status.Set(" ");
stop = true;
button <<= THISBACK(buttonCb);
}
GUI_APP_MAIN
{
TestThread().Run();
}
Hangs on "thr.Wait()" line.
Removing the Wait line the app seems work, but, as far as I can see, it leaves the thread callback running (but blocked somehow...); the tread count shows erroneously the correct runnung thread count.
Looking deeper inside, the app seems to hang on callback return.
If I remove the callback code (but leave the empty callback function) the app behaves good.
In another non-gui testcase the app behaves also good.
Do I miss something or it's a bug ?
Ciao
Max
p.s.: ubuntu karmic, gcc 4.4.1
[Updated on: Wed, 16 December 2009 00:32] Report message to a moderator
|
|
|
Goto Forum:
Current Time: Wed May 08 07:53:34 CEST 2024
Total time taken to generate the page: 0.02746 seconds
|