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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 "ui/ozone/public/ozone_platform.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/trace_event/trace_event.h"
#include "ui/events/devices/device_data_manager.h"
#include "ui/ozone/platform_object.h"
#include "ui/ozone/platform_selection.h"
namespace ui {
namespace {
bool g_platform_initialized_ui = false;
bool g_platform_initialized_gpu = false;
base::LazyInstance<base::OnceCallback<void(OzonePlatform*)>>::Leaky
instance_callback = LAZY_INSTANCE_INITIALIZER;
base::Lock& GetOzoneInstanceLock() {
static base::Lock lock;
return lock;
}
} // namespace
OzonePlatform::OzonePlatform() {
GetOzoneInstanceLock().AssertAcquired();
DCHECK(!instance_) << "There should only be a single OzonePlatform.";
instance_ = this;
g_platform_initialized_ui = false;
g_platform_initialized_gpu = false;
}
OzonePlatform::~OzonePlatform() = default;
// static
void OzonePlatform::InitializeForUI(const InitParams& args) {
EnsureInstance();
if (g_platform_initialized_ui)
return;
instance_->InitializeUI(args);
{
base::AutoLock lock(GetOzoneInstanceLock());
g_platform_initialized_ui = true;
}
// This is deliberately created after initializing so that the platform can
// create its own version of DDM.
DeviceDataManager::CreateInstance();
if (!instance_callback.Get().is_null())
std::move(instance_callback.Get()).Run(instance_);
}
// static
void OzonePlatform::InitializeForGPU(const InitParams& args) {
EnsureInstance();
if (g_platform_initialized_gpu)
return;
instance_->InitializeGPU(args);
{
base::AutoLock lock(GetOzoneInstanceLock());
g_platform_initialized_gpu = true;
}
if (!args.single_process && !instance_callback.Get().is_null())
std::move(instance_callback.Get()).Run(instance_);
}
// static
void OzonePlatform::Shutdown() {
base::AutoLock lock(GetOzoneInstanceLock());
auto* tmp = instance_;
instance_ = nullptr;
delete tmp;
}
// static
OzonePlatform* OzonePlatform::GetInstance() {
base::AutoLock lock(GetOzoneInstanceLock());
DCHECK(instance_) << "OzonePlatform is not initialized";
return instance_;
}
// static
OzonePlatform* OzonePlatform::EnsureInstance() {
base::AutoLock lock(GetOzoneInstanceLock());
if (!instance_) {
TRACE_EVENT1("ozone",
"OzonePlatform::Initialize",
"platform",
GetOzonePlatformName());
std::unique_ptr<OzonePlatform> platform =
PlatformObject<OzonePlatform>::Create();
// TODO(spang): Currently need to leak this object.
OzonePlatform* pl = platform.release();
DCHECK_EQ(instance_, pl);
}
return instance_;
}
// static
void OzonePlatform::RegisterStartupCallback(
base::OnceCallback<void(OzonePlatform*)> callback) {
OzonePlatform* inst = nullptr;
{
base::AutoLock lock(GetOzoneInstanceLock());
if (!instance_ || !g_platform_initialized_ui) {
instance_callback.Get() = std::move(callback);
return;
}
inst = instance_;
}
std::move(callback).Run(inst);
}
// static
OzonePlatform* OzonePlatform::instance_ = nullptr;
IPC::MessageFilter* OzonePlatform::GetGpuMessageFilter() {
return nullptr;
}
base::MessageLoop::Type OzonePlatform::GetMessageLoopTypeForGpu() {
return base::MessageLoop::TYPE_DEFAULT;
}
void OzonePlatform::AddInterfaces(
service_manager::BinderRegistryWithArgs<
const service_manager::BindSourceInfo&>* registry) {}
void OzonePlatform::AfterSandboxEntry() {}
} // namespace ui
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