Store the callstack of the IPC sender of ViewMsg_New

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 657 matching lines @@
       geolocation_dispatcher_(NULL),
       push_messaging_dispatcher_(NULL),
       presentation_dispatcher_(NULL),
       screen_orientation_dispatcher_(NULL),
       manifest_manager_(NULL),
       accessibility_mode_(AccessibilityModeOff),
       renderer_accessibility_(NULL),
       weak_factory_(this) {
   std::pair<RoutingIDFrameMap::iterator, bool> result =
       g_routing_id_frame_map.Get().insert(std::make_pair(routing_id_, this));
-  CHECK(result.second) << "Inserting a duplicate item.";
+  if (!result.second) {
+    // TODO(lfg): Temporary. We're about to force a crash, so save the debug
+    // info on the stack so we can recover it from the crash dumps.
+    RenderFrameImpl* duplicate = result.first->second;
+    const std::vector<unsigned long>& debug_info = render_view->debug_info();
+    const std::vector<unsigned long>& duplicate_debug_info =
+        duplicate->render_view()->debug_info();
+    unsigned long duplicate_stack_debug_info[128];
+    unsigned long stack_debug_info[128];
+    const int size = debug_info.size() > 128 ? 128 : debug_info.size();
+    const int duplicate_size =
+        duplicate_debug_info.size() > 128 ? 128 : duplicate_debug_info.size();
+    for (int i = 0; i < size; i++)
+      stack_debug_info[i] = debug_info[i];
+    for (int i = 0; i < duplicate_size; i++)
+      duplicate_stack_debug_info[i] = duplicate_debug_info[i];
+    (void) stack_debug_info;
+    (void) duplicate_stack_debug_info;
+    CHECK(result.second) << "Inserting a duplicate item.";
+  }
 
   RenderThread::Get()->AddRoute(routing_id_, this);
 
   render_view_->RegisterRenderFrame(this);
 
   // Everything below subclasses RenderFrameObserver and is automatically
   // deleted when the RenderFrame gets deleted.
 #if defined(OS_ANDROID)
   new GinJavaBridgeDispatcher(this);
 #endif
@@ skipping 3834 matching lines @@
 
 #if defined(ENABLE_BROWSER_CDMS)
 RendererCdmManager* RenderFrameImpl::GetCdmManager() {
   if (!cdm_manager_)
     cdm_manager_ = new RendererCdmManager(this);
   return cdm_manager_;
 }
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
 }  // namespace content