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8d7001adc3
Write access to the shared memory region is required because JavaScript lacks the capability to create read-only ArrayBuffers. When a user attempts to modify an ArrayBuffer that utilizes a ReadOnlySharedMemoryRegion as its BackingStore it triggers an access violation. Note that this pull request may be reverted in the future if JavaScript adds read-only ArrayBuffer support.
70 lines
2.7 KiB
C++
70 lines
2.7 KiB
C++
// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
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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 are
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// met:
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//
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// * 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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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY 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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// ---------------------------------------------------------------------------
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//
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// The contents of this file must follow a specific format in order to
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// support the CEF translator tool. See the translator.README.txt file in the
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// tools directory for more information.
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//
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#ifndef CEF_INCLUDE_CEF_SHARED_MEMORY_REGION_H_
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#define CEF_INCLUDE_CEF_SHARED_MEMORY_REGION_H_
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#pragma once
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#include "include/cef_base.h"
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///
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/// Class that wraps platform-dependent share memory region mapping.
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///
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/*--cef(source=library)--*/
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class CefSharedMemoryRegion : public virtual CefBaseRefCounted {
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public:
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///
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/// Returns true if the mapping is valid.
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///
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/*--cef()--*/
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virtual bool IsValid() = 0;
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///
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/// Returns the size of the mapping in bytes. Returns 0 for invalid instances.
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///
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/*--cef()--*/
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virtual size_t Size() = 0;
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///
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/// Returns the pointer to the memory. Returns nullptr for invalid instances.
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/// The returned pointer is only valid for the life span of this object.
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///
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/*--cef()--*/
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virtual void* Memory() = 0;
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};
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#endif // CEF_INCLUDE_CEF_SHARED_MEMORY_REGION_H_
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