https://bugzilla.novell.com/show_bug.cgi?id=711286
https://bugzilla.novell.com/show_bug.cgi?id=711286#c0 Summary: Garbage Collector has conflict with accelerometer Classification: Mono Product: MonoDroid Version: SVN Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Runtime AssignedTo: mono-bugs@lists.ximian.com ReportedBy: chan.ra...@gmail.com QAContact: mono-bugs@lists.ximian.com Found By: --- Blocker: --- Created an attachment (id=444977) --> (http://bugzilla.novell.com/attachment.cgi?id=444977) Simple game to reproduce and workaround the crashing problem User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1 This case is very similar to the case someone escalated earlier called "TouchTest". This problem is happening more often when using accelerometer input. If garbage collector is collecting garbage (GC.Collect()) when accelerometer sensor is turned on, the application will very likely crash without any debugging information. This problem had been puzzling me for 3 weeks and I finally confirmed it is definitely related to Garbage Collection and found out a workaround. Reproducible: Always Steps to Reproduce: 1. I have attached a simple "AccelerometerTest" project. The output is just an android logo moving around controlled by accelerometer. 2. Try to just tilt around the phone, you will likely get crashed within 20 seconds. 3. There is a function in GamePanel class called "Update()" which is the update of a typical game loop. You can see that I enforce GC to collect every 200 updates. When the GC is collecting possibly the accelerometer is also working at the same time causing the crash. My workwround is adding Sensor.Stop() and Sensor.Start() will isolate the accelerometer from GC. No more crash if you do that. Expected Results: Garbage collector should still work properly and the app should not crash even if I don't have my workaround. Accelerometer is an important part of mobile game development. Turning it on will crash the game when garbage collector is working. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug. You are the assignee for the bug. _______________________________________________ mono-bugs maillist - mono-bugs@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-bugs
