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// Copyright 2014 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 "content/browser/renderer_host/compositor_resize_lock.h"
#include "base/metrics/histogram_macros.h"
#include "base/trace_event/trace_event.h"
#include "content/public/browser/browser_thread.h"
#include "ui/compositor/compositor.h"
namespace content {
CompositorResizeLock::CompositorResizeLock(CompositorResizeLockClient* client,
const gfx::Size& new_size)
: client_(client),
expected_size_(new_size),
acquisition_time_(base::TimeTicks::Now()) {
TRACE_EVENT_ASYNC_BEGIN2("ui", "CompositorResizeLock", this, "width",
expected_size().width(), "height",
expected_size().height());
}
CompositorResizeLock::~CompositorResizeLock() {
compositor_lock_ = nullptr;
if (client_)
client_->CompositorResizeLockEnded();
TRACE_EVENT_ASYNC_END2("ui", "CompositorResizeLock", this, "width",
expected_size().width(), "height",
expected_size().height());
UMA_HISTOGRAM_TIMES("UI.CompositorResizeLock.Duration",
base::TimeTicks::Now() - acquisition_time_);
UMA_HISTOGRAM_BOOLEAN("UI.CompositorResizeLock.TimedOut", timed_out_);
}
bool CompositorResizeLock::Lock() {
if (unlocked_ || compositor_lock_)
return false;
compositor_lock_ = client_->GetCompositorLock(this);
return true;
}
void CompositorResizeLock::UnlockCompositor() {
unlocked_ = true;
compositor_lock_ = nullptr;
}
void CompositorResizeLock::CompositorLockTimedOut() {
timed_out_ = true;
UnlockCompositor();
if (client_) {
client_->CompositorResizeLockEnded();
client_ = nullptr;
}
}
} // namespace content
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