/* * Copyright (C) 2016-2017 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. ``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 #if ENABLE(WEBASSEMBLY) #include "JSDestructibleObject.h" #include "JSObject.h" #include "WasmMemory.h" #include <wtf/RefPtr.h> namespace JSC { class ArrayBuffer; class JSArrayBuffer; class JSWebAssemblyMemory : public JSDestructibleObject { public: typedef JSDestructibleObject Base; static JSWebAssemblyMemory* create(ExecState*, VM&, Structure*, Ref<Wasm::Memory>&&); static Structure* createStructure(VM&, JSGlobalObject*, JSValue); DECLARE_EXPORT_INFO; Wasm::Memory& memory() { return m_memory.get(); } JSArrayBuffer* buffer(VM& vm, JSGlobalObject*); Wasm::PageCount grow(VM&, ExecState*, uint32_t delta, bool shouldThrowExceptionsOnFailure); static ptrdiff_t offsetOfMemory() { return OBJECT_OFFSETOF(JSWebAssemblyMemory, m_memoryBase); } static ptrdiff_t offsetOfSize() { return OBJECT_OFFSETOF(JSWebAssemblyMemory, m_memorySize); } private: JSWebAssemblyMemory(VM&, Structure*, Ref<Wasm::Memory>&&); void finishCreation(VM&); static void destroy(JSCell*); static void visitChildren(JSCell*, SlotVisitor&); void* m_memoryBase; size_t m_memorySize; Ref<Wasm::Memory> m_memory; WriteBarrier<JSArrayBuffer> m_bufferWrapper; RefPtr<ArrayBuffer> m_buffer; }; } // namespace JSC #endif // ENABLE(WEBASSEMBLY)