
The methodology used to generate this CL is documented in https://crbug.com/1098010#c95. No-Try: true Bug: 1098010 Change-Id: I4bd37f76f2cc56763fc4018087890eae3c92c700 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3899419 Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Avi Drissman <avi@chromium.org> Owners-Override: Avi Drissman <avi@chromium.org> Auto-Submit: Avi Drissman <avi@chromium.org> Cr-Commit-Position: refs/heads/main@{#1047649}
63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
// Copyright 2012 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef UI_GL_GPU_SWITCHING_MANAGER_H_
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#define UI_GL_GPU_SWITCHING_MANAGER_H_
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#include "base/memory/singleton.h"
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#include "base/observer_list.h"
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#include "build/build_config.h"
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#include "ui/gl/gl_export.h"
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#include "ui/gl/gpu_preference.h"
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#include "ui/gl/gpu_switching_observer.h"
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namespace ui {
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// GpuSwitchingManager is not thread safe. It is running on the browser main
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// thread in the browser and/or on the gpu main thread in the GPU process.
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class GL_EXPORT GpuSwitchingManager {
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public:
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// Getter for the singleton. This will return NULL on failure.
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static GpuSwitchingManager* GetInstance();
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GpuSwitchingManager(const GpuSwitchingManager&) = delete;
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GpuSwitchingManager& operator=(const GpuSwitchingManager&) = delete;
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void AddObserver(GpuSwitchingObserver* observer);
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void RemoveObserver(GpuSwitchingObserver* observer);
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// Called when a GPU switch is noticed by the system. In the browser process
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// this is occurs as a result of a system observer. In the GPU process, this
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// occurs as a result of an IPC from the browser. The system observer is kept
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// in the browser process only so that any workarounds or blocklisting can
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// be applied there.
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//
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// The GpuPreference argument is a heuristic indicating whether the
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// system is known to be on the low-power or high-performance GPU.
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// If this heuristic fails, then kDefault is passed as argument.
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// Only Mac is supported for now.
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void NotifyGpuSwitched(gl::GpuPreference active_gpu_heuristic);
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// Called when a monitor is plugged in. Only Windows is supported for now.
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void NotifyDisplayAdded();
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// Called when a monitor is unplugged. Only Windows is supported for now.
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void NotifyDisplayRemoved();
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// Called when the display metrics changed. Only Windows is supported for
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// now.
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void NotifyDisplayMetricsChanged();
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private:
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friend struct base::DefaultSingletonTraits<GpuSwitchingManager>;
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GpuSwitchingManager();
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virtual ~GpuSwitchingManager();
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base::ObserverList<GpuSwitchingObserver>::Unchecked observer_list_;
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};
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} // namespace ui
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#endif // UI_GL_GPU_SWITCHING_MANAGER_H_
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