On Jun 1, 1:33 pm, Matt <[email protected]> wrote: > 1. In the event that the Android system is running low on > memory, Android starts shutting down activities and/or processes. Can > Android shut down individual components, as opposed to the whole > process? In other words, can Android close down an activity but leave > the service running? (I believe the answer is 98% yes, but there were > some ambiguities on the Android dev framework page)
Whole processes are killed, usually without any warning to the process involved. > 3. Do the JVMs built in with Android (Davik JVMs) have the > ability to release memory to the system that it longer uses? Win32 > Sun Java JVMs do not do this (once they ask for more memory, they will > never release it back to the system; you will see on Win32 a java.exe > grow in memory used, but never shrink) We don't have a "JVM" on Android. "DVM" is more appropriate. Dalvik will give back pages. Every VM has a HeapWorker thread that wakes up occasionally to run finalizers and give back 4KB pages. It doesn't do it right when the memory is freed because there's a fair chance that it'll get used again immediately, and we don't want to thrash the system with unnecessary system calls. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
