xref: /aosp_15_r20/external/cronet/ipc/ipc_mojo_handle_attachment.h (revision 6777b5387eb2ff775bb5750e3f5d96f37fb7352b)
1*6777b538SAndroid Build Coastguard Worker // Copyright 2015 The Chromium Authors
2*6777b538SAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be
3*6777b538SAndroid Build Coastguard Worker // found in the LICENSE file.
4*6777b538SAndroid Build Coastguard Worker 
5*6777b538SAndroid Build Coastguard Worker #ifndef IPC_IPC_MOJO_HANDLE_ATTACHMENT_H_
6*6777b538SAndroid Build Coastguard Worker #define IPC_IPC_MOJO_HANDLE_ATTACHMENT_H_
7*6777b538SAndroid Build Coastguard Worker 
8*6777b538SAndroid Build Coastguard Worker #include "build/build_config.h"
9*6777b538SAndroid Build Coastguard Worker #include "ipc/ipc_message_attachment.h"
10*6777b538SAndroid Build Coastguard Worker #include "ipc/ipc_message_support_export.h"
11*6777b538SAndroid Build Coastguard Worker #include "mojo/public/cpp/system/handle.h"
12*6777b538SAndroid Build Coastguard Worker 
13*6777b538SAndroid Build Coastguard Worker namespace IPC {
14*6777b538SAndroid Build Coastguard Worker 
15*6777b538SAndroid Build Coastguard Worker namespace internal {
16*6777b538SAndroid Build Coastguard Worker 
17*6777b538SAndroid Build Coastguard Worker // A MessageAttachment that holds a MojoHandle.
18*6777b538SAndroid Build Coastguard Worker // This can hold any type of transferrable Mojo handle (i.e. message pipe, data
19*6777b538SAndroid Build Coastguard Worker // pipe, etc), but the receiver is expected to know what type of handle to
20*6777b538SAndroid Build Coastguard Worker // expect.
21*6777b538SAndroid Build Coastguard Worker class IPC_MESSAGE_SUPPORT_EXPORT MojoHandleAttachment
22*6777b538SAndroid Build Coastguard Worker     : public MessageAttachment {
23*6777b538SAndroid Build Coastguard Worker  public:
24*6777b538SAndroid Build Coastguard Worker   explicit MojoHandleAttachment(mojo::ScopedHandle handle);
25*6777b538SAndroid Build Coastguard Worker 
26*6777b538SAndroid Build Coastguard Worker   MojoHandleAttachment(const MojoHandleAttachment&) = delete;
27*6777b538SAndroid Build Coastguard Worker   MojoHandleAttachment& operator=(const MojoHandleAttachment&) = delete;
28*6777b538SAndroid Build Coastguard Worker 
29*6777b538SAndroid Build Coastguard Worker   Type GetType() const override;
30*6777b538SAndroid Build Coastguard Worker 
31*6777b538SAndroid Build Coastguard Worker   // Returns the owning handle transferring the ownership.
32*6777b538SAndroid Build Coastguard Worker   mojo::ScopedHandle TakeHandle();
33*6777b538SAndroid Build Coastguard Worker 
34*6777b538SAndroid Build Coastguard Worker  private:
35*6777b538SAndroid Build Coastguard Worker   ~MojoHandleAttachment() override;
36*6777b538SAndroid Build Coastguard Worker   mojo::ScopedHandle handle_;
37*6777b538SAndroid Build Coastguard Worker };
38*6777b538SAndroid Build Coastguard Worker 
39*6777b538SAndroid Build Coastguard Worker }  // namespace internal
40*6777b538SAndroid Build Coastguard Worker }  // namespace IPC
41*6777b538SAndroid Build Coastguard Worker 
42*6777b538SAndroid Build Coastguard Worker #endif  // IPC_IPC_MOJO_HANDLE_ATTACHMENT_H_
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