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