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| 1 /* |
| 2 * Copyright (C) 2015 Google Inc. All rights reserved. |
| 3 * |
| 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are |
| 6 * met: |
| 7 * |
| 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above |
| 11 * copyright notice, this list of conditions and the following disclaimer |
| 12 * in the documentation and/or other materials provided with the |
| 13 * distribution. |
| 14 * * Neither the name of Google Inc. nor the names of its |
| 15 * contributors may be used to endorse or promote products derived from |
| 16 * this software without specific prior written permission. |
| 17 * |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ |
| 30 |
| 31 #ifndef PerformanceObserver_h |
| 32 #define PerformanceObserver_h |
| 33 |
| 34 #include "bindings/core/v8/ScriptWrappable.h" |
| 35 #include "platform/heap/Handle.h" |
| 36 #include "wtf/HashSet.h" |
| 37 #include "wtf/PassOwnPtr.h" |
| 38 #include "wtf/PassRefPtr.h" |
| 39 #include "wtf/RefCounted.h" |
| 40 #include "wtf/RefPtr.h" |
| 41 #include "wtf/Vector.h" |
| 42 |
| 43 namespace blink { |
| 44 |
| 45 class ExceptionState; |
| 46 class PerformanceBase; |
| 47 class PerformanceObserverCallback; |
| 48 class PerformanceObserver; |
| 49 class PerformanceObserverInit; |
| 50 class PerformanceObserverRegistration; |
| 51 class PerformanceEntry; |
| 52 |
| 53 using PerformanceObserverSet = HeapHashSet<Member<PerformanceObserver>>; |
| 54 using PerformanceObserverVector = HeapVector<Member<PerformanceObserver>>; |
| 55 using PerformanceEntryVector = HeapVector<Member<PerformanceEntry>>; |
| 56 using PerformanceObserverRegistrationSet = HeapHashSet<WeakMember<PerformanceObs
erverRegistration>>; |
| 57 |
| 58 class PerformanceObserver final : public GarbageCollectedFinalized<PerformanceOb
server>, public ScriptWrappable { |
| 59 DEFINE_WRAPPERTYPEINFO(); |
| 60 public: |
| 61 |
| 62 static PerformanceObserver* create(PerformanceBase*, PerformanceObserverCall
back*); |
| 63 static void resumeSuspendedObservers(); |
| 64 static void deliverObservations(); |
| 65 |
| 66 ~PerformanceObserver(); |
| 67 |
| 68 void observe(const PerformanceObserverInit&, ExceptionState&); |
| 69 void disconnect(); |
| 70 void observationStarted(PerformanceObserverRegistration*); |
| 71 void observationEnded(PerformanceObserverRegistration*); |
| 72 void enqueuePerformanceEntry(PerformanceEntry*); |
| 73 |
| 74 // Eagerly finalized as destructor accesses heap object members. |
| 75 EAGERLY_FINALIZE(); |
| 76 DECLARE_TRACE(); |
| 77 |
| 78 private: |
| 79 struct ObserverLessThan; |
| 80 |
| 81 explicit PerformanceObserver(PerformanceBase*, PerformanceObserverCallback*)
; |
| 82 void deliver(); |
| 83 bool shouldBeSuspended() const; |
| 84 |
| 85 Member<PerformanceObserverCallback> m_callback; |
| 86 WeakMember<PerformanceBase> m_performance; |
| 87 PerformanceEntryVector m_performanceEntries; |
| 88 PerformanceObserverRegistrationSet m_registrations; |
| 89 unsigned m_priority; |
| 90 }; |
| 91 |
| 92 } // namespace blink |
| 93 |
| 94 #endif // PerformanceObserver_h |
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