LifecycleObserver::contextDestroyed should be explicitly dispatched promptly when a context is dest…

Source/platform/LifecycleContext.h

Index: Source/platform/LifecycleContext.h
diff --git a/Source/platform/LifecycleContext.h b/Source/platform/LifecycleContext.h
index d2eee95e45287eb6a63c2a09c35b9b384d67f8ea..5253e9362547a676111593272990c1a87cf6331d 100644
--- a/Source/platform/LifecycleContext.h
+++ b/Source/platform/LifecycleContext.h
@@ -45,7 +45,10 @@ public:
     typedef LifecycleObserver<T> Observer;
 
     LifecycleContext() { }
-    virtual ~LifecycleContext() { }
+    virtual ~LifecycleContext()
+    {
+        ASSERT(!m_lifecycleNotifier);

[sof, 2014/12/26 08:21:42]

Add a comment next to this to indicate what might be missing?

+    }
 
     virtual bool isContextThread() const { return true; }
 
@@ -59,6 +62,13 @@ public:
 
 protected:
     Notifier& lifecycleNotifier();
+    void contextDestroyed()

[sof, 2014/12/26 08:21:42]

nit: add an empty line.

+    {
+        if (m_lifecycleNotifier) {
+            m_lifecycleNotifier->contextDestroyed();
+            m_lifecycleNotifier.clear();
+        }
+    }
 
 private:
     PassOwnPtr<Notifier> createLifecycleNotifier();