chrome/browser/task_manager/renderer_resource.h

   1 // Copyright 2013 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 CHROME_BROWSER_TASK_MANAGER_RENDERER_RESOURCE_H_
   6 #define CHROME_BROWSER_TASK_MANAGER_RENDERER_RESOURCE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "chrome/browser/task_manager/resource_provider.h"
  10
  11 namespace content {
  12 class RenderViewHost;
  13 }
  14
  15 namespace task_manager {
  16
  17 // Base class for various types of render process resources that provides common
  18 // functionality like stats tracking.
  19 class RendererResource : public Resource {
  20  public:
  21   RendererResource(base::ProcessHandle process,
  22                    content::RenderViewHost* render_view_host);
  23   ~RendererResource() override;
  24
  25   // Resource methods:
  26   base::string16 GetProfileName() const override;
  27   base::ProcessHandle GetProcess() const override;
  28   int GetUniqueChildProcessId() const override;
  29   Type GetType() const override;
  30   int GetRoutingID() const override;
  31
  32   bool ReportsCacheStats() const override;
  33   blink::WebCache::ResourceTypeStats GetWebCoreCacheStats() const override;
  34   bool ReportsV8MemoryStats() const override;
  35   size_t GetV8MemoryAllocated() const override;
  36   size_t GetV8MemoryUsed() const override;
  37
  38   // RenderResources always provide the network usage.
  39   bool SupportNetworkUsage() const override;
  40   void SetSupportNetworkUsage() override {}
  41
  42   void Refresh() override;
  43
  44   void NotifyResourceTypeStats(
  45       const blink::WebCache::ResourceTypeStats& stats) override;
  46
  47   void NotifyV8HeapStats(size_t v8_memory_allocated,
  48                          size_t v8_memory_used) override;
  49
  50   content::RenderViewHost* render_view_host() const {
  51     return render_view_host_;
  52   }
  53
  54  private:
  55   base::ProcessHandle process_;
  56   int pid_;
  57   int unique_process_id_;
  58
  59   // RenderViewHost we use to fetch stats.
  60   content::RenderViewHost* render_view_host_;
  61   // The stats_ field holds information about resource usage in the renderer
  62   // process and so it is updated asynchronously by the Refresh() call.
  63   blink::WebCache::ResourceTypeStats stats_;
  64   // This flag is true if we are waiting for the renderer to report its stats.
  65   bool pending_stats_update_;
  66
  67   // We do a similar dance to gather the V8 memory usage in a process.
  68   size_t v8_memory_allocated_;
  69   size_t v8_memory_used_;
  70   bool pending_v8_memory_allocated_update_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(RendererResource);
  73 };
  74
  75 }  // namespace task_manager
  76
  77 #endif  // CHROME_BROWSER_TASK_MANAGER_RENDERER_RESOURCE_H_