blob: c67cfda86ea3d3a7334c077049e13707866c8300 [file] [log] [blame]
/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WindowEventLoop.h"
#include "Document.h"
namespace WebCore {
Ref<WindowEventLoop> WindowEventLoop::create()
{
return adoptRef(*new WindowEventLoop);
}
void WindowEventLoop::queueTask(TaskSource source, ScriptExecutionContext& context, TaskFunction&& task)
{
ASSERT(isMainThread());
ASSERT(is<Document>(context));
scheduleToRunIfNeeded();
m_tasks.append(Task { source, WTFMove(task), downcast<Document>(context).identifier() });
}
void WindowEventLoop::suspend(ScriptExecutionContext&)
{
ASSERT(isMainThread());
}
void WindowEventLoop::resume(ScriptExecutionContext& context)
{
ASSERT(isMainThread());
ASSERT(is<Document>(context));
auto& document = downcast<Document>(context);
if (!m_documentIdentifiersForSuspendedTasks.contains(document.identifier()))
return;
scheduleToRunIfNeeded();
}
void WindowEventLoop::scheduleToRunIfNeeded()
{
if (m_isScheduledToRun)
return;
m_isScheduledToRun = true;
callOnMainThread([eventLoop = makeRef(*this)] () {
eventLoop->m_isScheduledToRun = false;
eventLoop->run();
});
}
void WindowEventLoop::run()
{
Vector<Task> tasks = WTFMove(m_tasks);
m_documentIdentifiersForSuspendedTasks.clear();
Vector<Task> remainingTasks;
for (auto& task : tasks) {
auto* document = Document::allDocumentsMap().get(task.documentIdentifier);
if (!document || document->activeDOMObjectsAreStopped())
continue;
if (document->activeDOMObjectsAreSuspended()) {
m_documentIdentifiersForSuspendedTasks.add(task.documentIdentifier);
remainingTasks.append(WTFMove(task));
continue;
}
task.task();
}
for (auto& task : m_tasks)
remainingTasks.append(WTFMove(task));
m_tasks = WTFMove(remainingTasks);
}
} // namespace WebCore