1/* 2 * Copyright (C) 2013 University of Washington. All rights reserved. 3 * Copyright (C) 2014 Apple Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 16 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 18 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include "config.h" 29#include "ReplayingInputCursor.h" 30 31#if ENABLE(WEB_REPLAY) 32 33#include "EventLoopInputDispatcher.h" 34#include "SegmentedInputStorage.h" 35#include "SerializationMethods.h" 36#include "WebReplayInputs.h" 37#include <wtf/text/CString.h> 38 39namespace WebCore { 40 41ReplayingInputCursor::ReplayingInputCursor(SegmentedInputStorage& storage, Page& page, EventLoopInputDispatcherClient* client) 42 : m_storage(storage) 43 , m_dispatcher(std::make_unique<EventLoopInputDispatcher>(page, *this, client)) 44{ 45 for (size_t i = 0; i < static_cast<size_t>(InputQueue::Count); i++) 46 m_positions.append(0); 47} 48 49ReplayingInputCursor::~ReplayingInputCursor() 50{ 51} 52 53PassRefPtr<ReplayingInputCursor> ReplayingInputCursor::create(SegmentedInputStorage& storage, Page& page, EventLoopInputDispatcherClient* client) 54{ 55 return adoptRef(new ReplayingInputCursor(storage, page, client)); 56} 57 58void ReplayingInputCursor::storeInput(std::unique_ptr<NondeterministicInputBase>) 59{ 60 // Cannot store inputs from a replaying input cursor. 61 ASSERT_NOT_REACHED(); 62} 63 64NondeterministicInputBase* ReplayingInputCursor::loadInput(InputQueue queue, const AtomicString& type) 65{ 66 NondeterministicInputBase* input = uncheckedLoadInput(queue); 67 68 if (input->type() != type) { 69 LOG_ERROR("%-25s ERROR: Expected replay input of type %s, but got type %s\n", "[ReplayingInputCursor]", type.string().ascii().data(), input->type().string().ascii().data()); 70 return nullptr; 71 } 72 73 return input; 74} 75 76NondeterministicInputBase* ReplayingInputCursor::uncheckedLoadInput(InputQueue queue) 77{ 78 if (m_positions[static_cast<size_t>(queue)] >= m_storage.queueSize(queue)) { 79 String queueString = EncodingTraits<InputQueue>::encodeValue(queue).convertTo<String>(); 80 LOG_ERROR("%-30s ERROR No more inputs remain for determinism queue %s, but one was requested.", "[ReplayingInputCursor]", queueString.ascii().data()); 81 return nullptr; 82 } 83 84 return m_storage.load(queue, m_positions[static_cast<size_t>(queue)]++); 85} 86 87}; // namespace WebCore 88 89#endif // ENABLE(WEB_REPLAY) 90