chrome/browser/task_management/providers/web_contents/renderer_task.h

   1 // Copyright 2015 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_MANAGEMENT_PROVIDERS_WEB_CONTENTS_RENDERER_TASK_H_
   6 #define CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_WEB_CONTENTS_RENDERER_TASK_H_
   7
   8 #include "chrome/browser/task_management/providers/task.h"
   9 #include "content/public/browser/navigation_entry.h"
  10
  11 class ProcessResourceUsage;
  12
  13 namespace content {
  14 class RenderProcessHost;
  15 class WebContents;
  16 } // namespace content
  17
  18 namespace task_management {
  19
  20 // Defines an abstract base class for various types of renderer process tasks
  21 // such as background contents, tab contents, ... etc.
  22 class RendererTask : public Task {
  23  public:
  24   RendererTask(const base::string16& title,
  25                const gfx::ImageSkia* icon,
  26                content::WebContents* web_contents);
  27   ~RendererTask() override;
  28
  29   // An abstract method that will be called when the event
  30   // |WebContentsObserver::TitleWasSet()| occurs. This gives the freedom to
  31   // concrete tasks to adjust the title however they need to before they set it.
  32   virtual void OnTitleChanged(content::NavigationEntry* entry) = 0;
  33
  34   // An abstract method that will be called when the event
  35   // |WebContentsObserver::DidUpdateFaviconURL()| occurs, so that concrete tasks
  36   // can update their favicons.
  37   virtual void OnFaviconChanged() = 0;
  38
  39   // task_management::Task:
  40   void Activate() override;
  41   void Refresh(const base::TimeDelta& update_interval,
  42                int64 refresh_flags) override;
  43   Type GetType() const override;
  44   int GetChildProcessUniqueID() const override;
  45   base::string16 GetProfileName() const override;
  46   int64 GetV8MemoryAllocated() const override;
  47   int64 GetV8MemoryUsed() const override;
  48   bool ReportsWebCacheStats() const override;
  49   blink::WebCache::ResourceTypeStats GetWebCacheStats() const override;
  50
  51  protected:
  52   // Returns the title of the given |web_contents|.
  53   static base::string16 GetTitleFromWebContents(
  54       content::WebContents* web_contents);
  55
  56   // Returns the favicon of the given |web_contents| if any, and returns
  57   // |nullptr| otherwise.
  58   static const gfx::ImageSkia* GetFaviconFromWebContents(
  59       content::WebContents* web_contents);
  60
  61   // Prefixes the given renderer |title| with the appropriate string based on
  62   // whether it's an app, an extension, or incognito.
  63   static const base::string16 PrefixRendererTitle(const base::string16& title,
  64                                                   bool is_app,
  65                                                   bool is_extension,
  66                                                   bool is_incognito);
  67
  68   content::WebContents* web_contents() const { return web_contents_; }
  69
  70  private:
  71   // The WebContents of the task this object represents.
  72   content::WebContents* web_contents_;
  73
  74   // The render process host of the task this object represents.
  75   content::RenderProcessHost* render_process_host_;
  76
  77   // The Mojo service wrapper that will provide us with the V8 memory usage and
  78   // the WebCache resource stats of the render process represented by this
  79   // object.
  80   scoped_ptr<ProcessResourceUsage> renderer_resources_sampler_;
  81
  82   // The unique ID of the RenderProcessHost.
  83   const int render_process_id_;
  84
  85   // The allocated and used V8 memory (in bytes).
  86   int64 v8_memory_allocated_;
  87   int64 v8_memory_used_;
  88
  89   // The WebKit resource cache statistics for this renderer.
  90   blink::WebCache::ResourceTypeStats webcache_stats_;
  91
  92   // The profile name associated with the browser context of the render view
  93   // host.
  94   const base::string16 profile_name_;
  95
  96   DISALLOW_COPY_AND_ASSIGN(RendererTask);
  97 };
  98
  99 }  // namespace task_management
 100
 101 #endif  // CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_WEB_CONTENTS_RENDERER_TASK_H_