Unable to load timeline data after adding Ctrl-C detection

[turboboost55]

I've been using CodeXL to profile a CLI OpenCL program on Windows 10 and it has been working well. Recently I added Ctrl-C detection to my program using SetConsoleCtrlHandler so as to do a more graceful shutdown. Ever since then, I can't profile any more. I start the profiling session, Application Timeline Trace / GPU Profile, my program runs, but when I shut it down I get the error message "Unable to load timeline data. Try enabling "Write trace data in intervals ..."".

Is this a fault in CodeXL? Is there something I can do to make it work?

[chesik-amd]

It sounds like either the application or the profiler is terminating unexpectedly. I'm not sure this is a scenario we've tested. We'll take a look. Does this only happen if you end your app with ctrl-c or does it happen even when the app terminates normally?

[turboboost55]

Well actually, the program is a simple console application that just has a main processing loop. You normally just end it by pressing Ctrl-C, or closing the console window. The software then gets forcefully closed. It worked ok with CodeXL in that configuration. But now I want to do a bit of shutdown processing when the user wants to close, so that's why I added SetConsoleCtrlHandler. Here's my shutdown handler:

BOOL CtrlHandler(DWORD fdwCtrlType)
{
	switch (fdwCtrlType)
	{
		case CTRL_C_EVENT:
		case CTRL_CLOSE_EVENT:
			cout << "Shutting down ..." << endl;
			// this triggers the main loop to stop
			cli_close = true;
			// give the main loop some time to respond.
			this_thread::sleep_for(chrono::milliseconds(1500));
			return(TRUE);

			// Pass other signals to the next handler. 
		case CTRL_BREAK_EVENT:
		case CTRL_LOGOFF_EVENT:
		case CTRL_SHUTDOWN_EVENT:
			cout << "Shutting down ..." << endl;
			cli_close = true;
			this_thread::sleep_for(chrono::milliseconds(1500));
			return FALSE;

		default:
			return FALSE;
	}
}

[qwu2-amd]

Hi, I've managed to repro this reported issue.