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      1 /*
      2  * Copyright (C) 2013 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
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     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 #include "config.h"
     32 
     33 #include "modules/performance/WorkerGlobalScopePerformance.h"
     34 
     35 #include "core/workers/WorkerGlobalScope.h"
     36 #include "modules/performance/WorkerPerformance.h"
     37 
     38 namespace WebCore {
     39 
     40 WorkerGlobalScopePerformance::WorkerGlobalScopePerformance()
     41 {
     42 }
     43 
     44 const char* WorkerGlobalScopePerformance::supplementName()
     45 {
     46     return "WorkerGlobalScopePerformance";
     47 }
     48 
     49 WorkerGlobalScopePerformance& WorkerGlobalScopePerformance::from(WorkerGlobalScope& context)
     50 {
     51     WorkerGlobalScopePerformance* supplement = static_cast<WorkerGlobalScopePerformance*>(WillBeHeapSupplement<WorkerGlobalScope>::from(context, supplementName()));
     52     if (!supplement) {
     53         supplement = new WorkerGlobalScopePerformance();
     54         provideTo(context, supplementName(), adoptPtrWillBeNoop(supplement));
     55     }
     56     return *supplement;
     57 }
     58 
     59 WorkerPerformance* WorkerGlobalScopePerformance::performance(WorkerGlobalScope& context)
     60 {
     61     return from(context).performance();
     62 }
     63 
     64 WorkerPerformance* WorkerGlobalScopePerformance::performance()
     65 {
     66     if (!m_performance)
     67         m_performance = WorkerPerformance::create();
     68     return m_performance.get();
     69 }
     70 
     71 void WorkerGlobalScopePerformance::trace(Visitor* visitor)
     72 {
     73     visitor->trace(m_performance);
     74     WillBeHeapSupplement<WorkerGlobalScope>::trace(visitor);
     75 }
     76 
     77 } // namespace WebCore
     78