Support Promises event-based instrumentation on backend.

Source/core/inspector/PromiseTracker.h

+/*
+ * Copyright (C) 2014 Google Inc. All rights reserved.

[aandrey, 2014/08/01 08:28:12]

use new copyright header

[Alexandra Mikhaylova, 2014/08/04 14:25:06]

Done.

+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef PromiseTracker_h
+#define PromiseTracker_h
+
+#include <v8.h>
+#include "bindings/core/v8/ScopedPersistent.h"
+#include "core/inspector/ScriptCallFrame.h"
+#include "wtf/HashMap.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/RefPtr.h"
+#include "wtf/Vector.h"
+#include "wtf/WeakPtr.h"
+
+namespace blink {
+
+class ExecutionContext;
+
+class PromiseTracker {
+    WTF_MAKE_NONCOPYABLE(PromiseTracker);
+public:
+    PromiseTracker() : m_isEnabled(true) { }

[aandrey, 2014/08/01 08:28:12]

default: false

[Alexandra Mikhaylova, 2014/08/04 14:25:06]

Done.

+
+    bool isEnabled() const { return m_isEnabled; }
+    void enable();
+    void disable();
+
+    void clear();
+
+    void didCreatePromise(ExecutionContext*, v8::Handle<v8::Object> promise);

[aandrey, 2014/08/01 08:28:12]

dont use v8::* here

[Alexandra Mikhaylova, 2014/08/04 14:25:06]

Done.

+    void didUpdatePromiseParent(ExecutionContext*, v8::Handle<v8::Object> promise, v8::Handle<v8::Object> parentPromise);
+    void didUpdatePromiseStatus(ExecutionContext*, v8::Handle<v8::Object> promise, int status, v8::Handle<v8::Value>);
+
+    class PromiseData : public RefCounted<PromiseData> {
+    public:
+        PromiseData(v8::Handle<v8::Object> promise, v8::Handle<v8::Object> parentPromise, int status, v8::Handle<v8::Value>, v8::Isolate*, PromiseTracker*, bool getCallStack = false);
+
+        v8::Isolate* m_isolate;
+        PromiseTracker* m_promiseTracker;
+
+        ScopedPersistent<v8::Object> m_promise;

[aandrey, 2014/08/01 08:28:12]

should not be public

[Alexandra Mikhaylova, 2014/08/04 14:25:06]

Done.

+        ScriptCallFrame m_functionDetails;

[aandrey, 2014/08/01 08:28:13]

function details?

[Alexandra Mikhaylova, 2014/08/04 14:25:07]

Renamed to m_callFrame.

+        ScopedPersistent<v8::Object> m_parentPromise;
+        int m_status;
+        ScopedPersistent<v8::Value> m_value;
+
+        WeakPtrFactory<PromiseData> m_weakPtrFactory;
+    };
+
+    struct PromiseDataWrapper {

[aandrey, 2014/08/01 08:28:12]

remove from .h file

[Alexandra Mikhaylova, 2014/08/04 14:25:06]

Done.

+        WTF_MAKE_NONCOPYABLE(PromiseDataWrapper);
+    public:
+        PromiseDataWrapper(WeakPtr<PromiseData> data)
+            : m_data(data)
+        {
+        }
+
+        WeakPtr<PromiseData> m_data;
+
+        static void didRemovePromise(const v8::WeakCallbackData<v8::Object, PromiseDataWrapper>&);
+    };
+
+    void didRemovePromise(v8::Handle<v8::Object> promise);
+
+private:
+    typedef Vector<RefPtr<PromiseData> > PromiseDataVector;
+    PromiseDataVector* getPromiseVector(v8::Handle<v8::Object> promise);

[aandrey, 2014/08/01 08:28:12]

we dont use "get" prefix

[Alexandra Mikhaylova, 2014/08/04 14:25:06]

Done.

+
+    bool m_isEnabled;
+    typedef HashMap<int, PromiseDataVector> PromiseDataMap;
+    PromiseDataMap m_promiseDataMap;
+};
+
+} // namespace blink
+
+#endif // !defined(PromiseTracker_h)