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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_COMPOSITOR_GPU_THREAD_H_
#define COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_COMPOSITOR_GPU_THREAD_H_
#include <cstddef>
#include <memory>
#include "base/memory/memory_pressure_listener.h"
#include "base/memory/raw_ptr.h"
#include "base/threading/thread.h"
#include "components/viz/service/viz_service_export.h"
#include "gpu/command_buffer/service/memory_tracking.h"
#include "gpu/command_buffer/service/shared_context_state.h"
#include "gpu/ipc/service/gpu_watchdog_thread.h"
namespace gl {
class GLDisplay;
} // namespace gl
namespace gpu {
class DawnContextProvider;
class GpuChannelManager;
class VulkanImplementation;
class VulkanDeviceQueue;
} // namespace gpu
namespace viz {
class VulkanContextProvider;
class VIZ_SERVICE_EXPORT CompositorGpuThread : public base::Thread {
public:
struct CreateParams {
raw_ptr<gpu::GpuChannelManager> gpu_channel_manager = nullptr;
raw_ptr<gl::GLDisplay> display = nullptr;
bool enable_watchdog = true;
#if BUILDFLAG(ENABLE_VULKAN)
raw_ptr<gpu::VulkanImplementation> vulkan_implementation = nullptr;
raw_ptr<gpu::VulkanDeviceQueue> device_queue = nullptr;
#endif
#if BUILDFLAG(SKIA_USE_DAWN)
raw_ptr<gpu::DawnContextProvider> dawn_context_provider = nullptr;
#endif
};
static std::unique_ptr<CompositorGpuThread> MaybeCreate(
const CreateParams& params);
// Disallow copy and assign.
CompositorGpuThread(const CompositorGpuThread&) = delete;
CompositorGpuThread& operator=(const CompositorGpuThread&) = delete;
~CompositorGpuThread() override;
scoped_refptr<gpu::SharedContextState> GetSharedContextState();
VulkanContextProvider* vulkan_context_provider() const {
return vulkan_context_provider_.get();
}
// base::Thread implementation.
void Init() override;
void CleanUp() override;
// These methods are called when chrome application is backgrounded and
// foregrounded.
void OnBackgrounded();
void OnForegrounded();
// This method is usually called only for low end devices on android.
void OnBackgroundCleanup();
void LoseContext();
private:
CompositorGpuThread(
gpu::GpuChannelManager* gpu_channel_manager,
gl::GLDisplay* display,
bool enable_watchdog);
bool Initialize();
void HandleMemoryPressure(
base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level);
void OnBackgroundedOnCompositorGpuThread();
raw_ptr<gpu::GpuChannelManager> gpu_channel_manager_;
const bool enable_watchdog_;
bool init_succeeded_ = false;
scoped_refptr<VulkanContextProvider> vulkan_context_provider_;
#if BUILDFLAG(SKIA_USE_DAWN)
std::unique_ptr<gpu::DawnContextProvider> dawn_context_provider_;
#endif
// The GLDisplay lives in GLDisplayManager, which never deletes displays once
// they are lazily created.
raw_ptr<gl::GLDisplay> display_ = nullptr;
// WatchdogThread to monitor CompositorGpuThread. Ensure that the members
// which needs to be monitored by |watchdog_thread_| should be destroyed
// before it by either adding them below it or explicitly destroying them
// before it.
std::unique_ptr<gpu::GpuWatchdogThread> watchdog_thread_;
scoped_refptr<gpu::SharedContextState> shared_context_state_;
// To start listening memory pressure signals from the platform, we create a
// new instance of MemoryPressureListener, passing a callback to a
// function that takes a MemoryPressureLevel parameter.To stop listening,
// simply delete the listener object. The implementation guarantees
// that the callback will always be called on the thread that created
// the listener.
std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
base::WeakPtrFactory<CompositorGpuThread> weak_ptr_factory_;
};
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_COMPOSITOR_GPU_THREAD_H_
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