05683: SDL-based: -watchdog command not operable in SDLMAME

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
05683	Interface	Major	Always	Aug 17, 2014, 23:19	Sep 1, 2014, 02:33

Tester	Tafoid	View Status	Public	Platform	SDLMAME
Assigned To	R. Belmont	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver
Version	0.154	Fixed in Version	0.155	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	05683: SDL-based: -watchdog command not operable in SDLMAME
Description	Using the -watchdog command which is supposed to give control back to the OS within the amount of time sent to the command does not work. This makes you have to forcequit MAME set which do not boot and hang upon start or during play. Example below The control should return after 5 seconds of 'hanging' but does not and requires user interaction to kill the application. This is problematic when running regression tests or any other tests which cannot be monitored all the time and requires a functioning watchdog to cease emulation when called upon. Windows (non-SDL) -watchdog command works great, properly detects hangups and discontinues emulation bring control back to OS and letting usage continue.
Steps To Reproduce	EG: mame -watchdog 5 comg079 (confirmed known to HANG immediately)
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	SDL-based

Attached Files

No.10939 NekoEd Senior Tester Aug 19, 2014, 23:19	Confirmed SDLMAME64 0.154 on Linux x64.
No.10949 Osso Moderator Aug 26, 2014, 09:35	Fixed by RB in r31777?
No.10951 R. Belmont Developer Aug 26, 2014, 15:32 edited on: Aug 26, 2014, 15:34	The watchdog was previously disabled unless you also specified an -str of less than 5 seconds. I don't know why. My notes indicate either Tafoid or Firewave requested it because of some problem with their regression batches. 31777 removes that behavior so it's just plain on if you use -watchdog and a valid time in seconds.
No.10953 Tafoid Administrator Aug 26, 2014, 21:49	On Windows SDL, at least, this is not fixed. Using the example above instantly stops the emulation. In fact, all the attempts of different games and video modes all instantly stop the emulation in which a quick window/screen change is seen and you are dumped back to command prompt with the "Terminating due to watchdog timeout" message.
No.10961 R. Belmont Developer Sep 1, 2014, 01:55	r31852.