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      1 /*
      2  * Copyright (c) 2014, Opera Software ASA. 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  * 3. Neither the name of Opera Software ASA nor the names of its
     13  *    contributors may be used to endorse or promote products derived
     14  *    from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     19  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     20  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     21  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     25  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     27  * OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #ifndef SharedWorkerPerformance_h
     31 #define SharedWorkerPerformance_h
     32 
     33 #include "platform/Supplementable.h"
     34 #include "platform/heap/Handle.h"
     35 
     36 namespace blink {
     37 
     38 class ExecutionContext;
     39 class SharedWorker;
     40 
     41 class SharedWorkerPerformance FINAL : public NoBaseWillBeGarbageCollected<SharedWorkerPerformance>, public WillBeHeapSupplement<SharedWorker> {
     42     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SharedWorkerPerformance);
     43 public:
     44     static SharedWorkerPerformance& from(SharedWorker&);
     45 
     46     static double workerStart(ExecutionContext*, SharedWorker&);
     47     double getWorkerStart(ExecutionContext*, SharedWorker&) const;
     48 
     49     virtual void trace(Visitor* visitor) OVERRIDE { WillBeHeapSupplement<SharedWorker>::trace(visitor); }
     50 
     51 private:
     52     SharedWorkerPerformance();
     53     static const char* supplementName();
     54 
     55     double m_timeOrigin;
     56 };
     57 
     58 } // namespace blink
     59 
     60 #endif // SharedWorkerPerformance_h
     61