texture_mailbox_deleter.h revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e 
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
12namespace cc {
13class ContextProvider;
14class SingleReleaseCallback;
15
16class CC_EXPORT TextureMailboxDeleter {
17 public:
18  TextureMailboxDeleter();
19  ~TextureMailboxDeleter();
20
21  // Returns a Callback that can be used as the ReleaseCallback for a
22  // TextureMailbox attached to the |texture_id|. The ReleaseCallback can
23  // be passed to other threads and will destroy the texture, once it is
24  // run, on the impl thread. If the TextureMailboxDeleter is destroyed
25  // due to the compositor shutting down, then the ReleaseCallback will
26  // become a no-op and the texture will be deleted immediately on the
27  // impl thread, along with dropping the reference to the ContextProvider.
28  scoped_ptr<SingleReleaseCallback> GetReleaseCallback(
29      const scoped_refptr<ContextProvider>& context_provider,
30      unsigned texture_id);
31
32 private:
33  // Runs the |impl_callback| to delete the texture and removes the callback
34  // from the |impl_callbacks_| list.
35  void RunDeleteTextureOnImplThread(
36      SingleReleaseCallback* impl_callback,
37      unsigned sync_point,
38      bool is_lost);
39
40  base::WeakPtrFactory<TextureMailboxDeleter> weak_ptr_factory_;
41  ScopedPtrVector<SingleReleaseCallback> impl_callbacks_;
42};
43
44}  // namespace cc
45
46#endif  // CC_RESOURCES_TEXTURE_MAILBOX_DELETER_H_
47