Just an additional note, in case it's not obvious, all sp<> needs to work is the incStrong() and decStrong() methods. Since it's a template, it doesn't require the target object to derive from RefBase(). In other words, you can use sp<T> as long as T::incStrong() and T::decStrong() exist and are implemented properly.
mathias On May 19, 12:43 am, Dianne Hackborn <hack...@android.com> wrote: > sp == strong pointer, wp == weak pointer. > > The object will remain around while there are strong pointers; it is > destroyed once the last one is released. All you can do with a weak pointer > is comparison and attempting to promote to a strong pointer; the latter will > fail if there are no other strong pointers on the object. > > > > On Mon, May 18, 2009 at 11:56 PM, xie <yili....@gmail.com> wrote: > > > Dear all : > > > when i read the android source, i find that "<sp>" is not only a smart > > pointer,it manage a strong ref count and i also find that the <wp> > > manage a weak ref count . > > > who can tell me how the two kinds of pointer works together, when will > > the object be freed? > > > thanks a lot > > -- > Dianne Hackborn > Android framework engineer > hack...@android.com > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "android-framework" group. To post to this group, send email to android-framework@googlegroups.com To unsubscribe from this group, send email to android-framework+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-framework?hl=en -~----------~----~----~----~------~----~------~--~---
