1/*
2 * Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
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#include "config.h"
27#include "SimpleTypedArrayController.h"
28
29#include "ArrayBuffer.h"
30#include "JSArrayBuffer.h"
31#include "JSCInlines.h"
32
33namespace JSC {
34
35SimpleTypedArrayController::SimpleTypedArrayController() { }
36SimpleTypedArrayController::~SimpleTypedArrayController() { }
37
38JSArrayBuffer* SimpleTypedArrayController::toJS(
39 ExecState* exec, JSGlobalObject* globalObject, ArrayBuffer* native)
40{
41 if (JSArrayBuffer* buffer = native->m_wrapper.get())
42 return buffer;
43
44 // The JSArrayBuffer::create function will register the wrapper in finishCreation.
45 JSArrayBuffer* result = JSArrayBuffer::create(
46 exec->vm(), globalObject->arrayBufferStructure(native->sharingMode()), native);
47 return result;
48}
49
50void SimpleTypedArrayController::registerWrapper(JSGlobalObject*, ArrayBuffer* native, JSArrayBuffer* wrapper)
51{
52 ASSERT(!native->m_wrapper);
53 native->m_wrapper = Weak<JSArrayBuffer>(wrapper, &m_owner);
54}
55
56bool SimpleTypedArrayController::isAtomicsWaitAllowedOnCurrentThread()
57{
58 return true;
59}
60
61bool SimpleTypedArrayController::JSArrayBufferOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, JSC::SlotVisitor& visitor, const char** reason)
62{
63 if (UNLIKELY(reason))
64 *reason = "JSArrayBuffer is opaque root";
65 auto& wrapper = *JSC::jsCast<JSC::JSArrayBuffer*>(handle.slot()->asCell());
66 return visitor.containsOpaqueRoot(wrapper.impl());
67}
68
69void SimpleTypedArrayController::JSArrayBufferOwner::finalize(JSC::Handle<JSC::Unknown>, void*) { }
70
71} // namespace JSC
72
73