blob: 80cc3b2c6f470b9688a9d184041d51d55a70c2c4 [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 "WorkerEventLoop.h"
#include "Microtasks.h"
#include "WorkerOrWorkletGlobalScope.h"
namespace WebCore {
Ref<WorkerEventLoop> WorkerEventLoop::create(WorkerOrWorkletGlobalScope& context)
{
return adoptRef(*new WorkerEventLoop(context));
}
WorkerEventLoop::WorkerEventLoop(WorkerOrWorkletGlobalScope& context)
: ContextDestructionObserver(&context)
{
}
WorkerEventLoop::~WorkerEventLoop()
{
}
void WorkerEventLoop::scheduleToRun()
{
auto* globalScope = downcast<WorkerOrWorkletGlobalScope>(scriptExecutionContext());
ASSERT(globalScope);
// Post this task with a special event mode, so that it can be separated from other
// kinds of tasks so that queued microtasks can run even if other tasks are ignored.
globalScope->postTaskForMode([eventLoop = Ref { *this }] (ScriptExecutionContext&) {
eventLoop->run();
}, WorkerEventLoop::taskMode());
}
bool WorkerEventLoop::isContextThread() const
{
return scriptExecutionContext()->isContextThread();
}
MicrotaskQueue& WorkerEventLoop::microtaskQueue()
{
ASSERT(scriptExecutionContext());
if (!m_microtaskQueue)
m_microtaskQueue = makeUnique<MicrotaskQueue>(scriptExecutionContext()->vm());
return *m_microtaskQueue;
}
void WorkerEventLoop::clearMicrotaskQueue()
{
m_microtaskQueue = nullptr;
}
const String WorkerEventLoop::taskMode()
{
return "workerEventLoopTaskMode"_s;
}
} // namespace WebCore