Implementation of the GreenWeb language extensions.

cc/output/latency_info_swap_promise.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 "cc/output/latency_info_swap_promise.h"
 
+#include <iostream>
+
 #include "base/logging.h"
+#include "base/threading/platform_thread.h"
 #include "base/trace_event/trace_event.h"
+#include "content/renderer/greenweb_latency_tracking.h"
 
 namespace {
 ui::LatencyComponentType DidNotSwapReasonToLatencyComponentType(
     cc::SwapPromise::DidNotSwapReason reason) {
   switch (reason) {
     case cc::SwapPromise::ACTIVATION_FAILS:
     case cc::SwapPromise::SWAP_FAILS:
       return ui::INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT;
     case cc::SwapPromise::COMMIT_FAILS:
       return ui::INPUT_EVENT_LATENCY_TERMINATED_COMMIT_FAILED_COMPONENT;
@@ skipping 31 matching lines @@
   return latency_.trace_id();
 }
 
 // Trace the original LatencyInfo of a LatencyInfoSwapPromise
 void LatencyInfoSwapPromise::OnCommit() {
   TRACE_EVENT_WITH_FLOW1("input,benchmark",
                          "LatencyInfo.Flow",
                          TRACE_ID_DONT_MANGLE(TraceId()),
                          TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT,
                          "step", "HandleInputEventMainCommit");
+
+  int64 trace_id = TraceId();
+  if (InputLatencyMap.find(trace_id) != InputLatencyMap.end()) {
+    int64 dom_node = InputLatencyMap[trace_id].dom_node;
+    if (dom_node) {
+      base::TimeTicks layout_end_ts = base::TimeTicks::Now();
+      base::TimeDelta latency = layout_end_ts - InputLatencyMap[trace_id].callback_start;
+      InputLatencyMap[trace_id].latency = latency.InMilliseconds();
+
+      DOMLatencyMap[dom_node].latency = InputLatencyMap[trace_id].latency;
+
+      content::process_freq_stat(&(InputLatencyMap[trace_id].FreqStatStartMap), &(DOMLatencyMap[dom_node].FreqStatMap));
+
+#ifdef EBS_DEBUG_TRACE_EVENT
+      TRACE_EVENT2("devtools.timeline", "GreenWeb:StyleLayout",
+                   "trace_id", TraceId(),
+                   "latency", DOMLatencyMap[dom_node].latency);
+      std::cout << "Thd: " << base::PlatformThread::CurrentId() <<
+                    " (" << base::PlatformThread::GetName() << ")" <<
+                    " StyleLayout "
+                    " trace_id " << trace_id <<
+                    " dom_node " << dom_node <<
+                    " latency " << DOMLatencyMap[dom_node].latency << std::endl;
+#endif
+    }
+    // Erase this trace_id because it will not used in the future
+    InputLatencyMap.erase(trace_id);
+  }
 }
 
 }  // namespace cc