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.
5 #include "cc/resources/texture_mailbox_deleter.h"
8 #include "base/location.h"
9 #include "base/memory/weak_ptr.h"
10 #include "base/message_loop/message_loop_proxy.h"
11 #include "cc/output/context_provider.h"
12 #include "cc/resources/single_release_callback.h"
13 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
17 static void DeleteTextureOnImplThread(
18 const scoped_refptr
<ContextProvider
>& context_provider
,
23 context_provider
->Context3d()->waitSyncPoint(sync_point
);
24 context_provider
->Context3d()->deleteTexture(texture_id
);
27 static void PostTaskFromMainToImplThread(
28 scoped_refptr
<base::SingleThreadTaskRunner
> impl_task_runner
,
29 ReleaseCallback run_impl_callback
,
32 // This posts the task to RunDeleteTextureOnImplThread().
33 impl_task_runner
->PostTask(
34 FROM_HERE
, base::Bind(run_impl_callback
, sync_point
, is_lost
));
37 TextureMailboxDeleter::TextureMailboxDeleter() : weak_ptr_factory_(this) {}
39 TextureMailboxDeleter::~TextureMailboxDeleter() {
40 for (size_t i
= 0; i
< impl_callbacks_
.size(); ++i
)
41 impl_callbacks_
.at(i
)->Run(0, true);
44 scoped_ptr
<SingleReleaseCallback
> TextureMailboxDeleter::GetReleaseCallback(
45 const scoped_refptr
<ContextProvider
>& context_provider
,
46 unsigned texture_id
) {
47 // This callback owns a reference on the |context_provider|. It must be
48 // destroyed on the impl thread. Upon destruction of this class, the
49 // callback must immediately be destroyed.
50 scoped_ptr
<SingleReleaseCallback
> impl_callback
=
51 SingleReleaseCallback::Create(base::Bind(&DeleteTextureOnImplThread
,
55 impl_callbacks_
.push_back(impl_callback
.Pass());
57 // The raw pointer to the impl-side callback is valid as long as this
58 // class is alive. So we guard it with a WeakPtr.
59 ReleaseCallback
run_impl_callback(
60 base::Bind(&TextureMailboxDeleter::RunDeleteTextureOnImplThread
,
61 weak_ptr_factory_
.GetWeakPtr(),
62 impl_callbacks_
.back()));
64 // Provide a callback for the main thread that posts back to the impl
66 scoped_ptr
<SingleReleaseCallback
> main_callback
=
67 SingleReleaseCallback::Create(base::Bind(
68 &PostTaskFromMainToImplThread
,
69 base::MessageLoopProxy::current(),
72 return main_callback
.Pass();
75 void TextureMailboxDeleter::RunDeleteTextureOnImplThread(
76 SingleReleaseCallback
* impl_callback
,
79 for (size_t i
= 0; i
< impl_callbacks_
.size(); ++i
) {
80 if (impl_callbacks_
.at(i
) == impl_callback
) {
81 // Run the callback, then destroy it here on the impl thread.
82 impl_callbacks_
.at(i
)->Run(sync_point
, is_lost
);
83 impl_callbacks_
.erase(impl_callbacks_
.begin() + i
);
88 NOTREACHED() << "The Callback returned by GetDeleteCallback() was called "