I think Tim meant the 'core' class library, which is pre-loaded into memory for the purposes that Tim has mentioned. You can check the file frameworks/base/core/java/com/android/internal/os/ZygoteInit.java.
William Liang 2011/9/16 Pratik Prajapati <[email protected]> > > > On Thu, Sep 15, 2011 at 10:16 AM, Tim Bird <[email protected]> wrote: > >> On 09/14/2011 07:13 PM, Matt Y. wrote: >> > >> > >> > On Thu, Sep 15, 2011 at 9:59 AM, Pratik Prajapati >> > <[email protected] <mailto:[email protected]>> wrote: >> > >> > Dear All, >> > >> > There are a lot of classes in my (big) APK which are used no >> > where(some test code is part of the APK with the actual service). >> > Will dalvik VM keep these classes in memory at runtime? ( many >> > classes are not used to create any object out of them). >> > >> > >> > only when classes are used, dvm loads these classes into memory. >> >> If only this were true. Unfortunately, a large number of classes >> (over 1800) are preloaded by zygote at startup time, to share memory >> between android processes, and to reduce subsequent application >> startup time. >> >> I'm not familiar with the DEX-combining mentioned, but I do know >> for sure that a large number of (potentially unused) classes are >> lying around in memory most of the time. (At least, in Android 2.3) >> -- Tim >> >> > You mean to say, even if no objects are created and still classes occupy > memory? Please let me know how you have checked it. > -- Pratik > >> >> ============================= >> Tim Bird >> Architecture Group Chair, CE Workgroup of the Linux Foundation >> Senior Staff Engineer, Sony Network Entertainment >> ============================= >> >> -- >> unsubscribe: [email protected] >> website: http://groups.google.com/group/android-kernel >> > > > > -- > Regards, > Pratik Prajapati > Cell: +1-949-351-8370 > > > -- > unsubscribe: [email protected] > website: http://groups.google.com/group/android-kernel > -- unsubscribe: [email protected] website: http://groups.google.com/group/android-kernel
