android_webview/browser/deferred_gpu_command_service.h

   1 // Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_
   6 #define ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_
   7
   8 #include <queue>
   9 #include <utility>
  10
  11 #include "base/lazy_instance.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/threading/thread_local.h"
  15 #include "base/time/time.h"
  16 #include "gpu/command_buffer/service/in_process_command_buffer.h"
  17
  18 namespace gpu {
  19 class SyncPointManager;
  20 }
  21
  22 namespace android_webview {
  23
  24 class ScopedAllowGL {
  25  public:
  26   ScopedAllowGL();
  27   ~ScopedAllowGL();
  28
  29   static bool IsAllowed();
  30
  31  private:
  32   static base::LazyInstance<base::ThreadLocalBoolean> allow_gl;
  33
  34   DISALLOW_COPY_AND_ASSIGN(ScopedAllowGL);
  35 };
  36
  37 class DeferredGpuCommandService
  38     : public gpu::InProcessCommandBuffer::Service,
  39       public base::RefCountedThreadSafe<DeferredGpuCommandService> {
  40  public:
  41   static void SetInstance();
  42   static DeferredGpuCommandService* GetInstance();
  43
  44   void ScheduleTask(const base::Closure& task) override;
  45   void ScheduleIdleWork(const base::Closure& task) override;
  46   bool UseVirtualizedGLContexts() override;
  47   scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache()
  48       override;
  49   gpu::SyncPointManager* sync_point_manager() override;
  50
  51   void RunTasks();
  52   // If |is_idle| is false, this will only run older idle tasks.
  53   void PerformIdleWork(bool is_idle);
  54   // Flush the idle queue until it is empty. This is different from
  55   // PerformIdleWork(is_idle = true), which does not run any newly scheduled
  56   // idle tasks during the idle run.
  57   void PerformAllIdleWork();
  58
  59   void AddRef() const override;
  60   void Release() const override;
  61
  62  protected:
  63   ~DeferredGpuCommandService() override;
  64   friend class base::RefCountedThreadSafe<DeferredGpuCommandService>;
  65
  66  private:
  67   friend class ScopedAllowGL;
  68   static void RequestProcessGL(bool for_idle);
  69
  70   DeferredGpuCommandService();
  71   size_t IdleQueueSize();
  72
  73   base::Lock tasks_lock_;
  74   std::queue<base::Closure> tasks_;
  75   std::queue<std::pair<base::Time, base::Closure> > idle_tasks_;
  76
  77   scoped_ptr<gpu::SyncPointManager> sync_point_manager_;
  78   scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
  79   DISALLOW_COPY_AND_ASSIGN(DeferredGpuCommandService);
  80 };
  81
  82 }  // namespace android_webview
  83
  84 #endif  // ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_