1/*
2 * Copyright (C) 2018 Yusuke Suzuki <utatane.tea@gmail.com>.
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 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 */
26
27#pragma once
28
29#include "JSExecState.h"
30
31namespace WebCore {
32
33class JSMicrotaskCallback : public RefCounted<JSMicrotaskCallback> {
34public:
35 static Ref<JSMicrotaskCallback> create(JSDOMGlobalObject& globalObject, Ref<JSC::Microtask>&& task)
36 {
37 return adoptRef(*new JSMicrotaskCallback(globalObject, WTFMove(task)));
38 }
39
40 void call()
41 {
42 auto protectedThis { makeRef(*this) };
43 JSC::VM& vm = m_globalObject->vm();
44 JSC::JSLockHolder lock(vm);
45 auto scope = DECLARE_THROW_SCOPE(vm);
46 JSExecState::runTask(m_globalObject->globalExec(), m_task);
47 scope.assertNoException();
48 }
49
50private:
51 JSMicrotaskCallback(JSDOMGlobalObject& globalObject, Ref<JSC::Microtask>&& task)
52 : m_globalObject { globalObject.vm(), &globalObject }
53 , m_task { WTFMove(task) }
54 {
55 }
56
57 JSC::Strong<JSDOMGlobalObject> m_globalObject;
58 Ref<JSC::Microtask> m_task;
59};
60
61} // namespace WebCore
62