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ASSERT(IsMainThread()); [message #21420]

Tue, 19 May 2009 13:56

tojocky
Messages: 607
Registered: April 2008
Location: UK

Contributor

Hello Mirek!

I have an error on run a builded application in line

 ASSERT(IsMainThread());

from uppsrc/Ctrl/CtrlCore/Win32Wnd.cpp in method

void Ctrl::GuiSleep(int ms)

.

What i do wrong? some days ago works fine, but after you added this line its prompt error! Tell me how can I change my code?

The situation is: I call a function in a thread instance, and this function works with GUI (progress). I uses this in GoogleTranslator that I call function in thread for translate a text

this is full method:

void Ctrl::GuiSleep(int ms)
{
	GuiLock __;
=>HERE	ASSERT(IsMainThread());
	ELOG("GuiSleep");
	if(EndSession())
		return;
	ELOG("GuiSleep 2");
	int level = LeaveGuiMutexAll();
#if !defined(flagDLL) && !defined(PLATFORM_WINCE)
	if(!OverwatchThread) {
		DWORD dummy;
		OverwatchThread = CreateThread(NULL, 0x100000, Win32OverwatchThread, NULL, 0, &dummy);
		ELOG("ExitLoopEventWait 1");
		ExitLoopEvent().Wait();
	}
	HANDLE h[1];
	*h = ExitLoopEvent().GetHandle();
	ELOG("ExitLoopEventWait 2 " << (void *)*h);
	MsgWaitForMultipleObjects(1, h, FALSE, ms, QS_ALLINPUT);
#else
	MsgWaitForMultipleObjects(0, NULL, FALSE, ms, QS_ALLINPUT);
#endif
	EnterGuiMutex(level);
}

Add:
I added GoogleTranslator as example.

After build and run application press Translate button for generate error!

Attachment: GoogleTranslator_2009_05_18.7z
(Size: 14.17KB, Downloaded 250 times)

[Updated on: Tue, 19 May 2009 17:11]

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Re: ASSERT(IsMainThread()); [message #21425 is a reply to message #21420]

Tue, 19 May 2009 17:45

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Well, I have fixed this, although I am not quite sure if there is any good use to call GuiSleep from non-main thread:

GuiSleep waits at most given time, but waiting stops if there are any input events (like MouseDown) to be processed. Anyway, processing messages is always performed by the main thread, so it is questionable why is GuiSleep good for non-mains.

Mirek

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