From bc5794e0ee27a25ae73b8edd3d2ce6523c226fb9 Mon Sep 17 00:00:00 2001
From: ulan <ulan@chromium.org>
Date: Mon, 2 May 2016 06:04:27 -0700
Subject: [PATCH] Add trace event for phantom handle processing callback.

BUG=chromium:608312
LOG=NO

Review-Url: https://codereview.chromium.org/1934993002
Cr-Commit-Position: refs/heads/master@{#35933}
---
 src/global-handles.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/global-handles.cc b/src/global-handles.cc
index 951db93a17..8797895876 100644
--- a/src/global-handles.cc
+++ b/src/global-handles.cc
@@ -551,6 +551,7 @@ class GlobalHandles::PendingPhantomCallbacksSecondPassTask
   }
 
   void RunInternal() override {
+    TRACE_EVENT0("v8", "V8.GCPhantomHandleProcessingCallback");
     isolate()->heap()->CallGCPrologueCallbacks(
         GCType::kGCTypeProcessWeakCallbacks, kNoGCCallbackFlags);
     InvokeSecondPassPhantomCallbacks(&pending_phantom_callbacks_, isolate());