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50 lines
1.3 KiB
50 lines
1.3 KiB
// Copyright (c) 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef IPC_IPC_MESSAGE_ATTACHMENT_H_
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#define IPC_IPC_MESSAGE_ATTACHMENT_H_
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#include "base/files/file.h"
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#include "base/macros.h"
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#include "base/memory/ref_counted.h"
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#include "base/pickle.h"
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#include "build/build_config.h"
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#include "ipc/ipc_message_support_export.h"
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#include "mojo/public/cpp/system/handle.h"
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namespace IPC {
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// Auxiliary data sent with |Message|. This can be a platform file descriptor
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// or a mojo |MessagePipe|. |GetType()| returns the type of the subclass.
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class IPC_MESSAGE_SUPPORT_EXPORT MessageAttachment
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: public base::Pickle::Attachment {
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public:
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enum class Type {
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MOJO_HANDLE,
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PLATFORM_FILE,
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WIN_HANDLE,
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MACH_PORT,
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FUCHSIA_HANDLE,
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};
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static scoped_refptr<MessageAttachment> CreateFromMojoHandle(
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mojo::ScopedHandle handle,
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Type type);
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virtual Type GetType() const = 0;
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mojo::ScopedHandle TakeMojoHandle();
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protected:
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friend class base::RefCountedThreadSafe<MessageAttachment>;
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MessageAttachment();
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~MessageAttachment() override;
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DISALLOW_COPY_AND_ASSIGN(MessageAttachment);
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};
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} // namespace IPC
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#endif // IPC_IPC_MESSAGE_ATTACHMENT_H_
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