src/cc/resources/texture_mailbox_deleter.h

   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 cc {
  13 class ContextProvider;
  14 class SingleReleaseCallback;
  15
  16 class 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(SingleReleaseCallback* impl_callback,
  36                                     uint32 sync_point,
  37                                     bool is_lost);
  38
  39   ScopedPtrVector<SingleReleaseCallback> impl_callbacks_;
  40   base::WeakPtrFactory<TextureMailboxDeleter> weak_ptr_factory_;
  41 };
  42
  43 }  // namespace cc
  44
  45 #endif  // CC_RESOURCES_TEXTURE_MAILBOX_DELETER_H_