| /* |
| * Copyright (C) 2020 Sony Interactive Entertainment Inc. |
| * |
| * 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. ``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 |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include "JSArrayBufferPrototype.h" |
| #include "JSGlobalObject.h" |
| |
| namespace JSC { |
| |
| namespace JSArrayBufferPrototypeInternal { |
| static constexpr bool verbose = false; |
| }; |
| |
| ALWAYS_INLINE bool speciesWatchpointIsValid(VM& vm, JSObject* thisObject, ArrayBufferSharingMode mode) |
| { |
| JSGlobalObject* globalObject = thisObject->globalObject(vm); |
| auto* prototype = globalObject->arrayBufferPrototype(mode); |
| |
| if (globalObject->arrayBufferSpeciesWatchpointSet(mode).state() == ClearWatchpoint) { |
| 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))); |
| globalObject->tryInstallArrayBufferSpeciesWatchpoint(mode); |
| ASSERT(globalObject->arrayBufferSpeciesWatchpointSet(mode).state() != ClearWatchpoint); |
| } |
| |
| return !thisObject->hasCustomProperties(vm) |
| && prototype == thisObject->getPrototypeDirect(vm) |
| && globalObject->arrayBufferSpeciesWatchpointSet(mode).state() == IsWatched; |
| } |
| |
| ALWAYS_INLINE std::optional<JSValue> arrayBufferSpeciesConstructor(JSGlobalObject* globalObject, JSArrayBuffer* thisObject, ArrayBufferSharingMode mode) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| bool isValid = speciesWatchpointIsValid(vm, thisObject, mode); |
| scope.assertNoException(); |
| if (LIKELY(isValid)) |
| return std::nullopt; |
| |
| RELEASE_AND_RETURN(scope, arrayBufferSpeciesConstructorSlow(globalObject, thisObject, mode)); |
| } |
| |
| } // namespace JSC |