POC for InspectorInstrumentation adding InspectorWebPerfAgent

third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..75809d82f389c497873c4dfe5ec640bf8e31b7ba
--- /dev/null
+++ b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.cpp
@@ -0,0 +1,78 @@
+// Copyright 2016 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 "core/inspector/InspectorWebPerfAgent.h"
+
+#include "core/frame/LocalFrame.h"
+#include "core/frame/Location.h"
+#include "core/inspector/InspectedFrames.h"
+#include "core/timing/DOMWindowPerformance.h"
+#include "public/platform/Platform.h"
+#include "platform/weborigin/SecurityOrigin.h"
+
+namespace blink {
+
+InspectorWebPerfAgent::InspectorWebPerfAgent(InspectedFrames* inspectedFrames)
+    : m_inspectedFrames(inspectedFrames)
+{
+    Platform::current()->currentThread()->addTaskObserver(this);
+}
+
+InspectorWebPerfAgent::~InspectorWebPerfAgent()
+{
+    Platform::current()->currentThread()->removeTaskObserver(this);
+}
+
+DEFINE_TRACE(InspectorWebPerfAgent)
+{
+    visitor->trace(m_inspectedFrames);
+    InspectorAgent::trace(visitor);
+}
+
+void InspectorWebPerfAgent::didCommitLoad(LocalFrame* frame, DocumentLoader* loader)
+{
+    LocalFrame* rootFrame = m_inspectedFrames->root();
+    Location* location = rootFrame->document()->location();
+    fprintf(stderr, "\n\nInspected Frame root: %s: %s!",
+        location->hostname().ascii().data(),
+        location->pathname().ascii().data());
+
+    int i = 0;
+    // InspectedFrames automagically has the child iframe (when local)
+    // so alternatively we could iterate that instead of traversing the tree:
+    // for (LocalFrame* rootFrame : *m_inspectedFrames) {
+    for (Frame* frame = rootFrame; frame; frame = frame->tree().traverseNext()) {
+        if (!frame->isLocalFrame()) {
+            continue;
+        }
+        blink::DOMWindow* domWindow = frame->domWindow();
+        /* Remove me */
+        SecurityOrigin* sorigin = frame->securityContext()->getSecurityOrigin();
+        // Report long tasks to DOMPerformance
+        blink::Performance* performance = DOMWindowPerformance::performance(
+            *domWindow);
+        if (performance) {
+            if (sorigin) {
+                fprintf(stderr, "\n##Invoke performance API [%d] %s : %s!!",
+                    ++i, sorigin->host().ascii().data(),
+                    sorigin->domain().ascii().data());
+            } else {
+                fprintf(stderr, "\n##Invoke performance API [%d] !", ++i);
+            }
+        }
+    }
+}
+
+void InspectorWebPerfAgent::willProcessTask()
+{
+    fprintf(stderr, "\n[ InspectorWebPerfAgent::willProcessTask ");
+}
+
+void InspectorWebPerfAgent::didProcessTask()
+{
+    fprintf(stderr, "InspectorWebPerfAgent::didProcessTask ]\n");
+}
+
+
+} // namespace blink