67 lines
3.1 KiB
C++
67 lines
3.1 KiB
C++
/*
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* Copyright (C) 2020 Sony Interactive Entertainment Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSArrayBufferPrototype.h"
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#include "JSGlobalObject.h"
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namespace JSC {
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namespace JSArrayBufferPrototypeInternal {
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static constexpr bool verbose = false;
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};
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ALWAYS_INLINE bool speciesWatchpointIsValid(VM& vm, JSObject* thisObject, ArrayBufferSharingMode mode)
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{
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JSGlobalObject* globalObject = thisObject->globalObject(vm);
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auto* prototype = globalObject->arrayBufferPrototype(mode);
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if (globalObject->arrayBufferSpeciesWatchpointSet(mode).stateOnJSThread() == ClearWatchpoint) {
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dataLogLnIf(JSArrayBufferPrototypeInternal::verbose, "Initializing ArrayBuffer species watchpoints for ArrayBuffer.prototype: ", pointerDump(prototype), " with structure: ", pointerDump(prototype->structure(vm)), "\nand ArrayBuffer: ", pointerDump(globalObject->arrayBufferConstructor(mode)), " with structure: ", pointerDump(globalObject->arrayBufferConstructor(mode)->structure(vm)));
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globalObject->tryInstallArrayBufferSpeciesWatchpoint(mode);
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ASSERT(globalObject->arrayBufferSpeciesWatchpointSet(mode).stateOnJSThread() != ClearWatchpoint);
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}
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return !thisObject->hasCustomProperties(vm)
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&& prototype == thisObject->getPrototypeDirect(vm)
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&& globalObject->arrayBufferSpeciesWatchpointSet(mode).stateOnJSThread() == IsWatched;
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}
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ALWAYS_INLINE std::optional<JSValue> arrayBufferSpeciesConstructor(JSGlobalObject* globalObject, JSArrayBuffer* thisObject, ArrayBufferSharingMode mode)
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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bool isValid = speciesWatchpointIsValid(vm, thisObject, mode);
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scope.assertNoException();
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if (LIKELY(isValid))
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return std::nullopt;
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RELEASE_AND_RETURN(scope, arrayBufferSpeciesConstructorSlow(globalObject, thisObject, mode));
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}
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} // namespace JSC
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