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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_COMMAND_BUFFER_SERVICE_GPU_FENCE_MANAGER_H_
#define GPU_COMMAND_BUFFER_SERVICE_GPU_FENCE_MANAGER_H_
#include <memory>
#include <vector>
#include "base/containers/flat_map.h"
#include "gpu/gpu_gles2_export.h"
#include "ui/gfx/gpu_fence_handle.h"
namespace gfx {
struct GpuFenceHandle;
class GpuFence;
} // namespace gfx
namespace gl {
class GLFence;
}
namespace gpu {
namespace gles2 {
// This class keeps track of GpuFence objects and their state. As GpuFence
// objects are not shared there is one GpuFenceManager per context.
class GPU_GLES2_EXPORT GpuFenceManager {
class GPU_GLES2_EXPORT GpuFenceEntry {
public:
GpuFenceEntry();
GpuFenceEntry(const GpuFenceEntry&) = delete;
GpuFenceEntry& operator=(const GpuFenceEntry&) = delete;
~GpuFenceEntry();
GpuFenceEntry(GpuFenceEntry&& other);
GpuFenceEntry& operator=(GpuFenceEntry&& other);
private:
friend class GpuFenceManager;
// TODO(crbug.com/40176671): We defer creation of GL fences from fence file
// descriptors because some drivers wait on the context set at the time of
// GL fence creation from a file descriptor, rather than the context set
// at the time the wait is issued.
gfx::GpuFenceHandle fence_handle_;
std::unique_ptr<gl::GLFence> gl_fence_;
};
public:
GpuFenceManager();
GpuFenceManager(const GpuFenceManager&) = delete;
GpuFenceManager& operator=(const GpuFenceManager&) = delete;
~GpuFenceManager();
bool CreateGpuFence(uint32_t client_id);
bool CreateGpuFenceFromHandle(uint32_t client_id, gfx::GpuFenceHandle handle);
bool IsValidGpuFence(uint32_t client_id);
std::unique_ptr<gfx::GpuFence> GetGpuFence(uint32_t client_id);
bool GpuFenceServerWait(uint32_t client_id);
bool RemoveGpuFence(uint32_t client_id);
// Must call before destruction.
void Destroy(bool have_context);
private:
using GpuFenceEntryMap =
base::flat_map<uint32_t, std::unique_ptr<GpuFenceEntry>>;
GpuFenceEntryMap gpu_fence_entries_;
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_GPU_FENCE_MANAGER_H_
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