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| 1 // Copyright 2013 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 CC_RESOURCES_TEXTURE_MAILBOX_DELETER_H_ | |
| 6 #define CC_RESOURCES_TEXTURE_MAILBOX_DELETER_H_ | |
| 7 | |
| 8 #include "base/memory/weak_ptr.h" | |
| 9 #include "cc/base/cc_export.h" | |
| 10 #include "cc/base/scoped_ptr_vector.h" | |
| 11 | |
| 12 namespace base { | |
| 13 class SingleThreadTaskRunner; | |
| 14 } | |
| 15 | |
| 16 namespace cc { | |
| 17 class ContextProvider; | |
| 18 class SingleReleaseCallback; | |
| 19 | |
| 20 class CC_EXPORT TextureMailboxDeleter { | |
| 21 public: | |
| 22 explicit TextureMailboxDeleter( | |
| 23 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); | |
| 24 ~TextureMailboxDeleter(); | |
| 25 | |
| 26 // Returns a Callback that can be used as the ReleaseCallback for a | |
| 27 // TextureMailbox attached to the |texture_id|. The ReleaseCallback can | |
| 28 // be passed to other threads and will destroy the texture, once it is | |
| 29 // run, on the impl thread. If the TextureMailboxDeleter is destroyed | |
| 30 // due to the compositor shutting down, then the ReleaseCallback will | |
| 31 // become a no-op and the texture will be deleted immediately on the | |
| 32 // impl thread, along with dropping the reference to the ContextProvider. | |
| 33 scoped_ptr<SingleReleaseCallback> GetReleaseCallback( | |
| 34 const scoped_refptr<ContextProvider>& context_provider, | |
| 35 unsigned texture_id); | |
| 36 | |
| 37 private: | |
| 38 // Runs the |impl_callback| to delete the texture and removes the callback | |
| 39 // from the |impl_callbacks_| list. | |
| 40 void RunDeleteTextureOnImplThread(SingleReleaseCallback* impl_callback, | |
| 41 uint32 sync_point, | |
| 42 bool is_lost); | |
| 43 | |
| 44 scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner_; | |
| 45 ScopedPtrVector<SingleReleaseCallback> impl_callbacks_; | |
| 46 base::WeakPtrFactory<TextureMailboxDeleter> weak_ptr_factory_; | |
| 47 }; | |
| 48 | |
| 49 } // namespace cc | |
| 50 | |
| 51 #endif // CC_RESOURCES_TEXTURE_MAILBOX_DELETER_H_ | |
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