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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2012 Intel Inc. All rights reserved.
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* 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.
*/
#pragma once
#include "ContextDestructionObserver.h"
#include "EventTarget.h"
#include "ExceptionOr.h"
#include "GenericTaskQueue.h"
#include <wtf/ListHashSet.h>
namespace WebCore {
class LoadTiming;
class PerformanceEntry;
class PerformanceNavigation;
class PerformanceObserver;
class PerformanceTiming;
class ResourceResponse;
class ResourceTiming;
class ScriptExecutionContext;
class URL;
class UserTiming;
class Performance final : public RefCounted<Performance>, public ContextDestructionObserver, public EventTargetWithInlineData {
public:
static Ref<Performance> create(ScriptExecutionContext& context, MonotonicTime timeOrigin) { return adoptRef(*new Performance(context, timeOrigin)); }
~Performance();
double now() const;
PerformanceNavigation* navigation();
PerformanceTiming* timing();
Vector<RefPtr<PerformanceEntry>> getEntries() const;
Vector<RefPtr<PerformanceEntry>> getEntriesByType(const String& entryType) const;
Vector<RefPtr<PerformanceEntry>> getEntriesByName(const String& name, const String& entryType) const;
void clearResourceTimings();
void setResourceTimingBufferSize(unsigned);
ExceptionOr<void> mark(const String& markName);
void clearMarks(const String& markName);
ExceptionOr<void> measure(const String& measureName, const String& startMark, const String& endMark);
void clearMeasures(const String& measureName);
void addResourceTiming(ResourceTiming&&);
void removeAllObservers();
void registerPerformanceObserver(PerformanceObserver&);
void unregisterPerformanceObserver(PerformanceObserver&);
static Seconds reduceTimeResolution(Seconds);
ScriptExecutionContext* scriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
using RefCounted::ref;
using RefCounted::deref;
private:
Performance(ScriptExecutionContext&, MonotonicTime timeOrigin);
void contextDestroyed() override;
EventTargetInterface eventTargetInterface() const final { return PerformanceEventTargetInterfaceType; }
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
bool isResourceTimingBufferFull() const;
void queueEntry(PerformanceEntry&);
mutable RefPtr<PerformanceNavigation> m_navigation;
mutable RefPtr<PerformanceTiming> m_timing;
// https://w3c.github.io/resource-timing/#extensions-performance-interface recommends size of 150.
Vector<RefPtr<PerformanceEntry>> m_resourceTimingBuffer;
unsigned m_resourceTimingBufferSize { 150 };
MonotonicTime m_timeOrigin;
std::unique_ptr<UserTiming> m_userTiming;
GenericTaskQueue<ScriptExecutionContext> m_performanceTimelineTaskQueue;
ListHashSet<RefPtr<PerformanceObserver>> m_observers;
};
}
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