Merge changes I37f0f315,I8cbf6044,Ibb598931,I5262bf11 into gingerbread

* changes:
  Fix a race that could cause GL commands to be executed from the wrong thread.
  RefBase subclasses can now decide how they want to be destroyed.
  Fix a race in SurfaceFlinger that could cause layers to be leaked forever.
  Fix a race-condtion in SurfaceFlinger that could lead to a crash.

1 files changed, 8 insertions, 1 deletions

diff --git a/include/utils/RefBase.h b/include/utils/RefBase.h
index c24c0dbcb28f..1b4a310008ad 100644
--- a/include/utils/RefBase.h
+++ b/include/utils/RefBase.h
@@ -115,7 +115,14 @@ public:
 protected:
                             RefBase();
     virtual                 ~RefBase();
-    
+
+    // called when the last reference goes away. this is responsible for
+    // calling the destructor. The default implementation just does
+    // "delete this;".
+    // Make sure to never acquire a strong reference from this function. The
+    // same restrictions than for destructors apply.
+    virtual void            destroy() const;
+
     //! Flags for extendObjectLifetime()
     enum {
         OBJECT_LIFETIME_WEAK    = 0x0001,