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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/gpu/ca_transaction_gpu_coordinator.h"
#include "base/cancelable_callback.h"
#include "base/functional/bind.h"
#include "content/browser/gpu/gpu_process_host.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "services/viz/privileged/mojom/gl/gpu_service.mojom.h"
#include "ui/accelerated_widget_mac/ca_transaction_observer.h"
#include "ui/accelerated_widget_mac/window_resize_helper_mac.h"
namespace content {
// static
scoped_refptr<CATransactionGPUCoordinator> CATransactionGPUCoordinator::Create(
GpuProcessHost* host) {
scoped_refptr<CATransactionGPUCoordinator> result(
new CATransactionGPUCoordinator(host));
// Avoid modifying result's refcount in the constructor by performing this
// PostTask afterward.
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ui::WindowResizeHelperMac::Get()->task_runner()->PostTask(
FROM_HERE,
base::BindOnce(
&CATransactionGPUCoordinator::AddPostCommitObserverOnUIThread,
result));
return result;
}
CATransactionGPUCoordinator::CATransactionGPUCoordinator(GpuProcessHost* host)
: host_(host) {}
CATransactionGPUCoordinator::~CATransactionGPUCoordinator() {
DCHECK(!host_);
DCHECK(!registered_as_observer_);
}
void CATransactionGPUCoordinator::HostWillBeDestroyed() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ui::WindowResizeHelperMac::Get()->task_runner()->PostTask(
FROM_HERE,
base::BindOnce(
&CATransactionGPUCoordinator::RemovePostCommitObserverOnUIThread,
this));
host_ = nullptr;
}
void CATransactionGPUCoordinator::AddPostCommitObserverOnUIThread() {
DCHECK(!registered_as_observer_);
ui::CATransactionCoordinator::Get().AddPostCommitObserver(this);
registered_as_observer_ = true;
}
void CATransactionGPUCoordinator::RemovePostCommitObserverOnUIThread() {
DCHECK(registered_as_observer_);
ui::CATransactionCoordinator::Get().RemovePostCommitObserver(this);
registered_as_observer_ = false;
}
void CATransactionGPUCoordinator::OnActivateForTransaction() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (host_)
host_->gpu_service()->BeginCATransaction();
}
void CATransactionGPUCoordinator::OnEnterPostCommit() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// If HostWillBeDestroyed() is called during a commit, pending_commit_count_
// may be left non-zero. That's fine as long as this instance is destroyed
// (and removed from the list of post-commit observers) soon after.
pending_commit_count_++;
if (host_)
host_->gpu_service()->CommitCATransaction(base::BindOnce(
&CATransactionGPUCoordinator::OnCommitCompletedOnProcessThread, this));
}
bool CATransactionGPUCoordinator::ShouldWaitInPostCommit() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return pending_commit_count_ > 0;
}
void CATransactionGPUCoordinator::OnCommitCompletedOnProcessThread() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ui::WindowResizeHelperMac::Get()->task_runner()->PostTask(
FROM_HERE,
base::BindOnce(&CATransactionGPUCoordinator::OnCommitCompletedOnUI,
this));
}
void CATransactionGPUCoordinator::OnCommitCompletedOnUI() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
pending_commit_count_--;
}
} // namespace content
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