Endless thread safe timeline recorder

runtime/vm/thread.cc

Index: runtime/vm/thread.cc
diff --git a/runtime/vm/thread.cc b/runtime/vm/thread.cc
index aa4f67ea92a647b00488f466a0e6f9ed26af02e4..a14d5b81848ba36c95fd24f64b129323b555abbe 100644
--- a/runtime/vm/thread.cc
+++ b/runtime/vm/thread.cc
@@ -108,6 +108,15 @@ void Thread::Schedule(Isolate* isolate) {
     ASSERT(isolate->thread_registry()->Contains(this));
     state_ = st;
   }
+  PostSchedule();
+}
+
+
+void Thread::PostSchedule() {
+  if ((current_block() == NULL) || current_block()->IsFull()) {
+    // Thread doesn't have a timeline block or it is full, request a new one.

[koda, 2015/08/07 01:09:54]

Why not let these cases be handled naturally when we actually try to add another
entry?

[Cutch, 2015/08/07 16:47:42]

Done.

+    set_current_block(isolate_->GetNewTimelineBlock());
+  }
 }