1 // Copyright 2015 The Chromium Authors 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 "build/build_config.h" 9 #include "ipc/ipc_message_attachment.h" 10 #include "ipc/ipc_message_support_export.h" 11 #include "mojo/public/cpp/system/handle.h" 12 13 namespace IPC { 14 15 namespace internal { 16 17 // A MessageAttachment that holds a MojoHandle. 18 // This can hold any type of transferrable Mojo handle (i.e. message pipe, data 19 // pipe, etc), but the receiver is expected to know what type of handle to 20 // expect. 21 class IPC_MESSAGE_SUPPORT_EXPORT MojoHandleAttachment 22 : public MessageAttachment { 23 public: 24 explicit MojoHandleAttachment(mojo::ScopedHandle handle); 25 26 MojoHandleAttachment(const MojoHandleAttachment&) = delete; 27 MojoHandleAttachment& operator=(const MojoHandleAttachment&) = delete; 28 29 Type GetType() const override; 30 31 // Returns the owning handle transferring the ownership. 32 mojo::ScopedHandle TakeHandle(); 33 34 private: 35 ~MojoHandleAttachment() override; 36 mojo::ScopedHandle handle_; 37 }; 38 39 } // namespace internal 40 } // namespace IPC 41 42 #endif // IPC_IPC_MOJO_HANDLE_ATTACHMENT_H_ 43