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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_OUTPUT_TEXTURE_MAILBOX_DELETER_H_
#define CC_OUTPUT_TEXTURE_MAILBOX_DELETER_H_
#include <vector>
#include "base/memory/weak_ptr.h"
#include "cc/base/cc_export.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace gpu {
struct SyncToken;
}
namespace cc {
class ContextProvider;
class SingleReleaseCallback;
class CC_EXPORT TextureMailboxDeleter {
public:
// task_runner corresponds with the thread the delete task should be posted
// to. If null, the delete will happen on the calling thread.
explicit TextureMailboxDeleter(
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
~TextureMailboxDeleter();
// Returns a Callback that can be used as the ReleaseCallback for a
// TextureMailbox attached to the |texture_id|. The ReleaseCallback can
// be passed to other threads and will destroy the texture, once it is
// run, on the impl thread. If the TextureMailboxDeleter is destroyed
// due to the compositor shutting down, then the ReleaseCallback will
// become a no-op and the texture will be deleted immediately on the
// impl thread, along with dropping the reference to the ContextProvider.
scoped_ptr<SingleReleaseCallback> GetReleaseCallback(
const scoped_refptr<ContextProvider>& context_provider,
unsigned texture_id);
private:
// Runs the |impl_callback| to delete the texture and removes the callback
// from the |impl_callbacks_| list.
void RunDeleteTextureOnImplThread(SingleReleaseCallback* impl_callback,
const gpu::SyncToken& sync_token,
bool is_lost);
scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner_;
std::vector<scoped_ptr<SingleReleaseCallback>> impl_callbacks_;
base::WeakPtrFactory<TextureMailboxDeleter> weak_ptr_factory_;
};
} // namespace cc
#endif // CC_OUTPUT_TEXTURE_MAILBOX_DELETER_H_
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