OLD | NEW |
(Empty) | |
| 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)) {} |
| 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_ |
OLD | NEW |