1 // Copyright (c) 2015 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef IPC_IPC_MOJO_HANDLE_ATTACHMENT_H_ 6 #define IPC_IPC_MOJO_HANDLE_ATTACHMENT_H_ 7 8 #include "base/files/file.h" 9 #include "base/macros.h" 10 #include "build/build_config.h" 11 #include "ipc/ipc_message_attachment.h" 12 #include "ipc/ipc_message_support_export.h" 13 #include "mojo/public/cpp/system/handle.h" 14 15 namespace IPC { 16 17 namespace internal { 18 19 // A MessageAttachment that holds a MojoHandle. 20 // This can hold any type of transferrable Mojo handle (i.e. message pipe, data 21 // pipe, etc), but the receiver is expected to know what type of handle to 22 // expect. 23 class IPC_MESSAGE_SUPPORT_EXPORT MojoHandleAttachment 24 : public MessageAttachment { 25 public: 26 explicit MojoHandleAttachment(mojo::ScopedHandle handle); 27 28 Type GetType() const override; 29 30 // Returns the owning handle transferring the ownership. 31 mojo::ScopedHandle TakeHandle(); 32 33 private: 34 ~MojoHandleAttachment() override; 35 mojo::ScopedHandle handle_; 36 37 DISALLOW_COPY_AND_ASSIGN(MojoHandleAttachment); 38 }; 39 40 } // namespace internal 41 } // namespace IPC 42 43 #endif // IPC_IPC_MOJO_HANDLE_ATTACHMENT_H_ 44