chrome/browser/task_management/providers/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_TASK_H_
   6 #define CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_TASK_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/process/process_handle.h"
  10 #include "base/strings/string16.h"
  11 #include "base/time/time.h"
  12 #include "third_party/WebKit/public/web/WebCache.h"
  13 #include "ui/gfx/image/image_skia.h"
  14
  15 namespace task_management {
  16
  17 // Defines a task that corresponds to a tab, an app, an extension, ... etc. It
  18 // represents one row in the task manager table. Multiple tasks can share the
  19 // same process, in which case they're grouped together in the task manager
  20 // table. See |task_management::TaskGroup| which represents a process possibly
  21 // shared by multiple tasks.
  22 class Task {
  23  public:
  24   enum Type {
  25     UNKNOWN = 0,
  26     BROWSER,        /* The main browser process. */
  27     RENDERER,       /* A normal WebContents renderer process. */
  28     EXTENSION,      /* An extension or app process. */
  29     GUEST,          /* A browser plugin guest process. */
  30     PLUGIN,         /* A plugin process. */
  31     WORKER,         /* A web worker process. */
  32     NACL,           /* A NativeClient loader or broker process. */
  33     UTILITY,        /* A browser utility process. */
  34     ZYGOTE,         /* A Linux zygote process. */
  35     SANDBOX_HELPER, /* A sandbox helper process. */
  36     GPU,            /* A graphics process. */
  37   };
  38
  39   // Create a task with the given |title| and the given favicon |icon|. This
  40   // task runs on a process whose handle is |handle|.
  41   Task(const base::string16& title,
  42        const gfx::ImageSkia* icon,
  43        base::ProcessHandle handle);
  44   virtual ~Task();
  45
  46   // Activates this TaskManager's task by bringing its container to the front
  47   // (if possible).
  48   virtual void Activate();
  49
  50   // Will be called to let the task refresh itself between refresh cycles.
  51   // |update_interval| is the time since the last task manager refresh.
  52   // the |refresh_flags| indicate which resources should be calculated on each
  53   // refresh.
  54   virtual void Refresh(const base::TimeDelta& update_interval,
  55                        int64 refresh_flags);
  56
  57   // Will receive this notification through the task manager from
  58   // |ChromeNetworkDelegate::OnRawBytesRead()|. The task will add to the
  59   // |current_byte_count_| in this refresh cycle.
  60   void OnNetworkBytesRead(int64 bytes_read);
  61
  62   // Returns the task type.
  63   virtual Type GetType() const = 0;
  64
  65   // This is the unique ID of the BrowserChildProcessHost/RenderProcessHost. It
  66   // is not the PID nor the handle of the process.
  67   // For a task that represents the browser process, the return value is 0. For
  68   // other tasks that represent renderers and other child processes, the return
  69   // value is whatever unique IDs of their hosts in the browser process.
  70   virtual int GetChildProcessUniqueID() const = 0;
  71
  72   // The name of the profile associated with the browser context of the render
  73   // view host that this task represents (if this task represents a renderer).
  74   virtual base::string16 GetProfileName() const;
  75
  76   // Getting the Sqlite used memory (in bytes). Not all tasks reports Sqlite
  77   // memory, in this case a default invalid value of -1 will be returned.
  78   // Check for whether the task reports it or not first.
  79   bool ReportsSqliteMemory() const;
  80   virtual int64 GetSqliteMemoryUsed() const;
  81
  82   // Getting the allocated and used V8 memory (in bytes). Not all tasks reports
  83   // V8 memory, in this case a default invalid value of -1 will be returned.
  84   // Check for whether the task reports it or not first.
  85   bool ReportsV8Memory() const;
  86   virtual int64 GetV8MemoryAllocated() const;
  87   virtual int64 GetV8MemoryUsed() const;
  88
  89   // Checking if the task reports Webkit resource cache statistics and getting
  90   // them if it does.
  91   virtual bool ReportsWebCacheStats() const;
  92   virtual blink::WebCache::ResourceTypeStats GetWebCacheStats() const;
  93
  94   // Checking whether the task reports network usage.
  95   bool ReportsNetworkUsage() const;
  96
  97   int64 task_id() const { return task_id_; }
  98   int64 network_usage() const { return network_usage_; }
  99   const base::string16& title() const { return title_; }
 100   const gfx::ImageSkia& icon() const { return icon_; }
 101   const base::ProcessHandle& process_handle() const { return process_handle_; }
 102   const base::ProcessId& process_id() const { return process_id_; }
 103
 104  protected:
 105   void set_title(const base::string16& new_title) { title_ = new_title; }
 106   void set_icon(const gfx::ImageSkia& new_icon) { icon_ = new_icon; }
 107
 108  private:
 109   // The unique ID of this task.
 110   const int64 task_id_;
 111
 112   // The task's network usage in the current refresh cycle measured in bytes per
 113   // second. A value of -1 means this task doesn't report network usage data.
 114   int64 network_usage_;
 115
 116   // The current network bytes received by this task during the current refresh
 117   // cycle. A value of -1 means this task has never been notified of any network
 118   // usage.
 119   int64 current_byte_count_;
 120
 121   // The title of the task.
 122   base::string16 title_;
 123
 124   // The favicon.
 125   gfx::ImageSkia icon_;
 126
 127   // The handle of the process on which this task is running.
 128   const base::ProcessHandle process_handle_;
 129
 130   // The PID of the process on which this task is running.
 131   const base::ProcessId process_id_;
 132
 133   DISALLOW_COPY_AND_ASSIGN(Task);
 134 };
 135
 136 }  // namespace task_management
 137
 138 #endif  // CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_TASK_H_