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1 // Copyright 2016 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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_OWNERSHIP_H_ | |
6 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_OWNERSHIP_H_ | |
7 | |
8 #include <memory> | |
9 #include <vector> | |
10 | |
11 #include "base/memory/ptr_util.h" | |
12 #include "base/memory/ref_counted.h" | |
13 | |
14 namespace content { | |
15 | |
16 // Destructor-only interface for encapsulating pure ownership. | |
17 // TODO(chfremer): Consider renaming this to Releasable, ScopedOpaqueReference, | |
18 // ScopedReference, or ScopedResource. | |
19 class Ownership { | |
20 public: | |
21 virtual ~Ownership() {} | |
22 }; | |
23 | |
24 // Encapsulates (shared) ownership of a scoped_refptr<T> and exposes it | |
25 // through the Ownership interface. | |
26 template <typename T> | |
27 class ScopedRefptrOwnership : public Ownership { | |
28 public: | |
29 ScopedRefptrOwnership(scoped_refptr<T> refptr) : refptr_(std::move(refptr)) {} | |
emircan
2017/03/16 20:54:03
Make this constructor to private and move MakeScop
chfremer
2017/03/16 22:02:30
I moved the MakeScopedRefptrOwnership out of this
| |
30 | |
31 private: | |
32 const scoped_refptr<T> refptr_; | |
33 }; | |
34 | |
35 template <typename T> | |
36 std::unique_ptr<Ownership> MakeScopedRefptrOwnership(scoped_refptr<T> refptr) { | |
37 return base::MakeUnique<ScopedRefptrOwnership<T>>(std::move(refptr)); | |
38 } | |
39 | |
40 // A collection of Ownerships | |
41 class OwnershipCollection : public Ownership { | |
42 public: | |
43 OwnershipCollection(); | |
44 ~OwnershipCollection() override; | |
45 | |
46 void AttachOwnership(std::unique_ptr<Ownership> ownership) { | |
47 collection_.push_back(std::move(ownership)); | |
48 } | |
49 | |
50 private: | |
51 std::vector<std::unique_ptr<Ownership>> collection_; | |
52 }; | |
53 | |
54 } // namespace content | |
55 | |
56 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_OWNERSHIP_H_ | |
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