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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.
#include "android_webview/browser/gl_view_renderer_manager.h"
#include "base/logging.h"
#include "base/threading/platform_thread.h"
namespace android_webview {
using base::AutoLock;
GLViewRendererManager::GLViewRendererManager() {}
GLViewRendererManager::~GLViewRendererManager() {}
bool GLViewRendererManager::OnRenderThread() const {
AutoLock auto_lock(lock_);
return render_thread_.is_equal(base::PlatformThread::CurrentHandle());
}
void GLViewRendererManager::MarkRenderThread() {
lock_.AssertAcquired();
if (render_thread_.is_null())
render_thread_ = base::PlatformThread::CurrentHandle();
DCHECK(render_thread_.is_equal(base::PlatformThread::CurrentHandle()));
}
GLViewRendererManager::Key GLViewRendererManager::DidDrawGL(
Key key,
BrowserViewRenderer* view) {
AutoLock auto_lock(lock_);
MarkRenderThread();
if (key == mru_list_.end()) {
DCHECK(mru_list_.end() ==
std::find(mru_list_.begin(), mru_list_.end(), view));
mru_list_.push_front(view);
return mru_list_.begin();
} else {
DCHECK(*key == view);
mru_list_.splice(mru_list_.begin(), mru_list_, key);
return key;
}
}
void GLViewRendererManager::NoLongerExpectsDrawGL(Key key) {
AutoLock auto_lock(lock_);
DCHECK(mru_list_.end() != key);
mru_list_.erase(key);
}
BrowserViewRenderer* GLViewRendererManager::GetMostRecentlyDrawn() const {
AutoLock auto_lock(lock_);
if (mru_list_.begin() == mru_list_.end())
return NULL;
return *mru_list_.begin();
}
GLViewRendererManager::Key GLViewRendererManager::NullKey() {
AutoLock auto_lock(lock_);
return mru_list_.end();
}
} // namespace android_webview
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