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#include "config.h" 31#include "modules/performance/SharedWorkerPerformance.h" 32 33#include "core/dom/Document.h" 34#include "core/dom/ExecutionContext.h" 35#include "core/loader/DocumentLoadTiming.h" 36#include "core/loader/DocumentLoader.h" 37#include "core/workers/SharedWorker.h" 38 39namespace blink { 40 41SharedWorkerPerformance::SharedWorkerPerformance() 42 : m_timeOrigin(monotonicallyIncreasingTime()) 43{ 44} 45 46const char* SharedWorkerPerformance::supplementName() 47{ 48 return "SharedWorkerPerformance"; 49} 50 51SharedWorkerPerformance& SharedWorkerPerformance::from(SharedWorker& sharedWorker) 52{ 53 SharedWorkerPerformance* supplement = static_cast<SharedWorkerPerformance*>(WillBeHeapSupplement<SharedWorker>::from(sharedWorker, supplementName())); 54 if (!supplement) { 55 supplement = new SharedWorkerPerformance(); 56 provideTo(sharedWorker, supplementName(), adoptPtrWillBeNoop(supplement)); 57 } 58 return *supplement; 59} 60 61double SharedWorkerPerformance::workerStart(ExecutionContext* context, SharedWorker& sharedWorker) 62{ 63 return SharedWorkerPerformance::from(sharedWorker).getWorkerStart(context, sharedWorker); 64} 65 66double SharedWorkerPerformance::getWorkerStart(ExecutionContext* context, SharedWorker&) const 67{ 68 ASSERT(context); 69 ASSERT(context->isDocument()); 70 Document* document = toDocument(context); 71 if (!document->loader()) 72 return 0; 73 74 double navigationStart = document->loader()->timing()->navigationStart(); 75 return m_timeOrigin - navigationStart; 76} 77 78} // namespace blink 79 80