blob: 3545d5d511ff868198b19352a08d4e1d256a33cd [file] [log] [blame]
/*
* Copyright (C) 2013-2017 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 "JSDOMGlobalObjectTask.h"
#include "ActiveDOMCallback.h"
#include "JSDOMGlobalObject.h"
#include "JSExecState.h"
#include <JavaScriptCore/Microtask.h>
#include <JavaScriptCore/StrongInlines.h>
#include <wtf/Ref.h>
namespace WebCore {
using namespace JSC;
class JSGlobalObjectCallback final : public RefCounted<JSGlobalObjectCallback>, private ActiveDOMCallback {
public:
static Ref<JSGlobalObjectCallback> create(JSDOMGlobalObject& globalObject, Ref<Microtask>&& task)
{
return adoptRef(*new JSGlobalObjectCallback(globalObject, WTFMove(task)));
}
void call()
{
if (!canInvokeCallback())
return;
Ref<JSGlobalObjectCallback> protectedThis(*this);
VM& vm = m_globalObject->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
ExecState* exec = m_globalObject->globalExec();
ScriptExecutionContext* context = m_globalObject->scriptExecutionContext();
// We will fail to get the context if the frame has been detached.
if (!context)
return;
JSExecState::runTask(exec, m_task);
scope.assertNoException();
}
private:
JSGlobalObjectCallback(JSDOMGlobalObject& globalObject, Ref<Microtask>&& task)
: ActiveDOMCallback { globalObject.scriptExecutionContext() }
, m_globalObject { globalObject.vm(), &globalObject }
, m_task { WTFMove(task) }
{
}
Strong<JSDOMGlobalObject> m_globalObject;
Ref<Microtask> m_task;
};
JSGlobalObjectTask::JSGlobalObjectTask(JSDOMGlobalObject& globalObject, Ref<Microtask>&& task)
: ScriptExecutionContext::Task({ })
{
auto callback = JSGlobalObjectCallback::create(globalObject, WTFMove(task));
m_task = [callback = WTFMove(callback)] (ScriptExecutionContext&) {
callback->call();
};
}
} // namespace WebCore