Support idle time in CPU profiler

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 74bfc29174b58be98ed1dc490fa8ebd9a94d4e37..7c85e27ba29b143c57981834a97d0af496aef318 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -661,9 +661,9 @@ class Isolate {
   }
   inline Address* handler_address() { return &thread_local_top_.handler_; }
 
-  // Bottom JS entry (see StackTracer::Trace in sampler.cc).
-  static Address js_entry_sp(ThreadLocalTop* thread) {
-    return thread->js_entry_sp_;
+  // Bottom JS entry.
+  Address js_entry_sp() {

[alph, 2013/08/07 09:51:59]

Can't you just use the js_entry_sp_address?

[yurys, 2013/08/07 10:07:32]

That would be inconsistent with the accessors above. We should either use only
foo_address for all or use separate accessors for value and address.

+    return thread_local_top_.js_entry_sp_;
   }
   inline Address* js_entry_sp_address() {
     return &thread_local_top_.js_entry_sp_;