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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
      6 #define CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
      7 
      8 #include <list>
      9 #include <string>
     10 
     11 #include "base/callback_forward.h"
     12 #include "base/process/process.h"
     13 #include "content/common/content_export.h"
     14 
     15 class GURL;
     16 
     17 namespace base {
     18 class FilePath;
     19 class ListValue;
     20 }
     21 
     22 namespace gpu {
     23 struct GPUInfo;
     24 }
     25 
     26 namespace content {
     27 
     28 class GpuDataManagerObserver;
     29 
     30 // This class is fully thread-safe.
     31 class GpuDataManager {
     32  public:
     33   typedef base::Callback<void(const std::list<base::ProcessHandle>&)>
     34       GetGpuProcessHandlesCallback;
     35 
     36   // Getter for the singleton.
     37   CONTENT_EXPORT static GpuDataManager* GetInstance();
     38 
     39   virtual void InitializeForTesting(const std::string& gpu_blacklist_json,
     40                                     const gpu::GPUInfo& gpu_info) = 0;
     41 
     42   virtual bool IsFeatureBlacklisted(int feature) const = 0;
     43 
     44   virtual gpu::GPUInfo GetGPUInfo() const = 0;
     45 
     46   // Retrieves a list of process handles for all gpu processes.
     47   virtual void GetGpuProcessHandles(
     48       const GetGpuProcessHandlesCallback& callback) const = 0;
     49 
     50   // This indicator might change because we could collect more GPU info or
     51   // because the GPU blacklist could be updated.
     52   // If this returns false, any further GPU access, including launching GPU
     53   // process, establish GPU channel, and GPU info collection, should be
     54   // blocked.
     55   // Can be called on any thread.
     56   // If |reason| is not NULL and GPU access is blocked, upon return, |reason|
     57   // contains a description of the reason why GPU access is blocked.
     58   virtual bool GpuAccessAllowed(std::string* reason) const = 0;
     59 
     60   // Requests complete GPUinfo if it has not already been requested
     61   virtual void RequestCompleteGpuInfoIfNeeded() = 0;
     62 
     63   virtual bool IsCompleteGpuInfoAvailable() const = 0;
     64 
     65   // Requests that the GPU process report its current video memory usage stats,
     66   // which can be retrieved via the GPU data manager's on-update function.
     67   virtual void RequestVideoMemoryUsageStatsUpdate() const = 0;
     68 
     69   // Returns true if SwiftShader should be used.
     70   virtual bool ShouldUseSwiftShader() const = 0;
     71 
     72   // Register a path to SwiftShader.
     73   virtual void RegisterSwiftShaderPath(const base::FilePath& path) = 0;
     74 
     75   // Registers/unregister |observer|.
     76   virtual void AddObserver(GpuDataManagerObserver* observer) = 0;
     77   virtual void RemoveObserver(GpuDataManagerObserver* observer) = 0;
     78 
     79   // Allows a given domain previously blocked from accessing 3D APIs
     80   // to access them again.
     81   virtual void UnblockDomainFrom3DAPIs(const GURL& url) = 0;
     82 
     83   // Disable the gpu process watchdog thread.
     84   virtual void DisableGpuWatchdog() = 0;
     85 
     86   // Set GL strings. This triggers a re-calculation of GPU blacklist
     87   // decision.
     88   virtual void SetGLStrings(const std::string& gl_vendor,
     89                             const std::string& gl_renderer,
     90                             const std::string& gl_version) = 0;
     91 
     92   // Obtain collected GL strings.
     93   virtual void GetGLStrings(std::string* gl_vendor,
     94                             std::string* gl_renderer,
     95                             std::string* gl_version) = 0;
     96 
     97   // Turn off all hardware acceleration.
     98   virtual void DisableHardwareAcceleration() = 0;
     99 
    100  protected:
    101   virtual ~GpuDataManager() {}
    102 };
    103 
    104 };  // namespace content
    105 
    106 #endif  // CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
    107