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.
5 #ifndef CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
6 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
11 #include "base/basictypes.h"
12 #include "base/callback_forward.h"
13 #include "base/gtest_prod_util.h"
14 #include "base/memory/ref_counted.h"
15 #include "base/memory/singleton.h"
16 #include "base/observer_list.h"
17 #include "base/strings/string16.h"
18 #include "base/timer/timer.h"
19 #include "chrome/browser/task_manager/resource_provider.h"
20 #include "chrome/browser/ui/host_desktop.h"
21 #include "content/public/common/gpu_memory_stats.h"
22 #include "third_party/WebKit/public/web/WebCache.h"
24 class PrefRegistrySimple;
25 class TaskManagerModel;
26 class TaskManagerModelGpuDataManagerObserver;
36 namespace extensions {
48 // This class is a singleton.
51 static void RegisterPrefs(PrefRegistrySimple* registry);
53 // Returns true if the process at the specified index is the browser process.
54 bool IsBrowserProcess(int index) const;
56 // Terminates the process at the specified index.
57 void KillProcess(int index);
59 // Activates the browser tab associated with the process in the specified
61 void ActivateProcess(int index);
63 // These methods are invoked by the resource providers to add/remove resources
64 // to the Task Manager. Note that the resources are owned by the
65 // ResourceProviders and are not valid after StopUpdating() has been called
66 // on the ResourceProviders.
67 void AddResource(task_manager::Resource* resource);
68 void RemoveResource(task_manager::Resource* resource);
70 void OnWindowClosed();
72 // Invoked when a change to a resource has occurred that should cause any
73 // observers to completely refresh themselves (for example, the creation of
74 // a background resource in a process). Results in all observers receiving
75 // OnModelChanged() events.
78 // Returns the singleton instance (and initializes it if necessary).
79 static TaskManager* GetInstance();
81 TaskManagerModel* model() const { return model_.get(); }
83 void OpenAboutMemory(chrome::HostDesktopType desktop_type);
86 FRIEND_TEST_ALL_PREFIXES(TaskManagerTest, Basic);
87 FRIEND_TEST_ALL_PREFIXES(TaskManagerTest, Resources);
88 FRIEND_TEST_ALL_PREFIXES(TaskManagerTest, RefreshCalled);
89 FRIEND_TEST_ALL_PREFIXES(TaskManagerWindowControllerTest, Init);
90 FRIEND_TEST_ALL_PREFIXES(TaskManagerWindowControllerTest, Sort);
91 FRIEND_TEST_ALL_PREFIXES(TaskManagerWindowControllerTest,
92 SelectionAdaptsToSorting);
94 // Obtain an instance via GetInstance().
96 friend struct DefaultSingletonTraits<TaskManager>;
100 // The model used for gathering and processing task data. It is ref counted
101 // because it is passed as a parameter to MessageLoop::InvokeLater().
102 scoped_refptr<TaskManagerModel> model_;
104 DISALLOW_COPY_AND_ASSIGN(TaskManager);
107 class TaskManagerModelObserver {
109 virtual ~TaskManagerModelObserver() {}
111 // Invoked when the model has been completely changed.
112 virtual void OnModelChanged() = 0;
114 // Invoked when a range of items has changed.
115 virtual void OnItemsChanged(int start, int length) = 0;
117 // Invoked when new items are added.
118 virtual void OnItemsAdded(int start, int length) = 0;
120 // Invoked when a range of items has been removed.
121 virtual void OnItemsRemoved(int start, int length) = 0;
123 // Invoked when a range of items is to be immediately removed. It differs
124 // from OnItemsRemoved by the fact that the item is still in the task manager,
125 // so it can be queried for and found.
126 virtual void OnItemsToBeRemoved(int start, int length) {}
128 // Invoked when the initialization of the model has been finished and
129 // periodical updates is started. The first periodical update will be done
130 // in a few seconds. (depending on platform)
131 virtual void OnReadyPeriodicalUpdate() {}
134 // The model used by TaskManager.
136 // TaskManagerModel caches the values from all task_manager::Resources. This is
137 // done so the UI sees a consistant view of the resources until it is told a
138 // value has been updated.
139 class TaskManagerModel : public base::RefCountedThreadSafe<TaskManagerModel> {
142 typedef std::pair<int, int> GroupRange;
144 explicit TaskManagerModel(TaskManager* task_manager);
146 void AddObserver(TaskManagerModelObserver* observer);
147 void RemoveObserver(TaskManagerModelObserver* observer);
149 // Returns number of registered resources.
150 int ResourceCount() const;
151 // Returns number of registered groups.
152 int GroupCount() const;
154 // Methods to return raw resource information.
155 int GetNaClDebugStubPort(int index) const;
156 int64 GetNetworkUsage(int index) const;
157 double GetCPUUsage(int index) const;
158 int GetIdleWakeupsPerSecond(int index) const;
159 base::ProcessId GetProcessId(int index) const;
160 base::ProcessHandle GetProcess(int index) const;
162 // Catchall method that calls off to the appropriate GetResourceXXX method
163 // based on |col_id|. |col_id| is an IDS_ value used to identify the column.
164 base::string16 GetResourceById(int index, int col_id) const;
166 // Methods to return formatted resource information.
167 const base::string16& GetResourceTitle(int index) const;
168 const base::string16& GetResourceProfileName(int index) const;
169 base::string16 GetResourceNaClDebugStubPort(int index) const;
170 base::string16 GetResourceNetworkUsage(int index) const;
171 base::string16 GetResourceCPUUsage(int index) const;
172 base::string16 GetResourcePrivateMemory(int index) const;
173 base::string16 GetResourceSharedMemory(int index) const;
174 base::string16 GetResourcePhysicalMemory(int index) const;
175 base::string16 GetResourceProcessId(int index) const;
176 base::string16 GetResourceGDIHandles(int index) const;
177 base::string16 GetResourceUSERHandles(int index) const;
178 base::string16 GetResourceWebCoreImageCacheSize(int index) const;
179 base::string16 GetResourceWebCoreScriptsCacheSize(int index) const;
180 base::string16 GetResourceWebCoreCSSCacheSize(int index) const;
181 base::string16 GetResourceVideoMemory(int index) const;
182 base::string16 GetResourceSqliteMemoryUsed(int index) const;
183 base::string16 GetResourceIdleWakeupsPerSecond(int index) const;
184 base::string16 GetResourceV8MemoryAllocatedSize(int index) const;
186 // Gets the private memory (in bytes) that should be displayed for the passed
187 // resource index. Caches the result since this calculation can take time on
189 bool GetPrivateMemory(int index, size_t* result) const;
191 // Gets the shared memory (in bytes) that should be displayed for the passed
192 // resource index. Caches the result since this calculation can take time on
194 bool GetSharedMemory(int index, size_t* result) const;
196 // Gets the physical memory (in bytes) that should be displayed for the passed
198 bool GetPhysicalMemory(int index, size_t* result) const;
200 // On Windows, get the current and peak number of GDI handles in use.
201 void GetGDIHandles(int index, size_t* current, size_t* peak) const;
203 // On Windows, get the current and peak number of USER handles in use.
204 void GetUSERHandles(int index, size_t* current, size_t* peak) const;
206 // Gets the statuses of webkit. Return false if the resource for the given row
208 bool GetWebCoreCacheStats(int index,
209 blink::WebCache::ResourceTypeStats* result) const;
211 // Gets the GPU memory allocated of the given page.
212 bool GetVideoMemory(int index,
213 size_t* video_memory,
214 bool* has_duplicates) const;
216 // Gets the sqlite memory (in byte). Return false if the resource for the
217 // given row doesn't report information.
218 bool GetSqliteMemoryUsedBytes(int index, size_t* result) const;
220 // Gets the amount of memory allocated for javascript. Returns false if the
221 // resource for the given row isn't a renderer.
222 bool GetV8Memory(int index, size_t* result) const;
224 // Gets the amount of memory used for javascript. Returns false if the
225 // resource for the given row isn't a renderer.
226 bool GetV8MemoryUsed(int index, size_t* result) const;
228 // Returns true if resource for the given row can be activated.
229 bool CanActivate(int index) const;
231 // Returns true if the resource is first/last in its group (resources
232 // rendered by the same process are groupped together).
233 bool IsResourceFirstInGroup(int index) const;
234 bool IsResourceLastInGroup(int index) const;
236 // Returns icon to be used for resource (for example a favicon).
237 gfx::ImageSkia GetResourceIcon(int index) const;
239 // Returns the group range of resource.
240 GroupRange GetGroupRangeForResource(int index) const;
242 // Returns an index of groups to which the resource belongs.
243 int GetGroupIndexForResource(int index) const;
245 // Returns an index of resource which belongs to the |group_index|th group
246 // and which is the |index_in_group|th resource in group.
247 int GetResourceIndexForGroup(int group_index, int index_in_group) const;
249 // Compares values in column |col_id| and rows |row1|, |row2|.
250 // Returns -1 if value in |row1| is less than value in |row2|,
251 // 0 if they are equal, and 1 otherwise.
252 int CompareValues(int row1, int row2, int col_id) const;
254 // Returns the unique child process ID generated by Chromium, not the OS
255 // process id. This is used to identify processes internally and for
256 // extensions. It is not meant to be displayed to the user.
257 int GetUniqueChildProcessId(int index) const;
259 // Returns the type of the given resource.
260 task_manager::Resource::Type GetResourceType(int index) const;
262 // Returns WebContents of given resource or NULL if not applicable.
263 content::WebContents* GetResourceWebContents(int index) const;
265 void AddResource(task_manager::Resource* resource);
266 void RemoveResource(task_manager::Resource* resource);
268 void StartUpdating();
271 // Listening involves calling StartUpdating on all resource providers. This
272 // causes all of them to subscribe to notifications and enumerate current
273 // resources. It differs from StartUpdating that it doesn't start the
274 // Refresh timer. The end result is that we have a full view of resources, but
275 // don't spend unneeded time updating, unless we have a real need to.
276 void StartListening();
277 void StopListening();
279 void Clear(); // Removes all items.
281 // Sends OnModelChanged() to all observers to inform them of significant
282 // changes to the model.
285 // Updates the values for all rows.
288 void NotifyResourceTypeStats(
289 base::ProcessId renderer_id,
290 const blink::WebCache::ResourceTypeStats& stats);
292 void NotifyVideoMemoryUsageStats(
293 const content::GPUVideoMemoryUsageStats& video_memory_usage_stats);
295 void NotifyV8HeapStats(base::ProcessId renderer_id,
296 size_t v8_memory_allocated,
297 size_t v8_memory_used);
299 void NotifyBytesRead(const net::URLRequest& request, int bytes_read);
301 void RegisterOnDataReadyCallback(const base::Closure& callback);
303 void NotifyDataReady();
306 friend class base::RefCountedThreadSafe<TaskManagerModel>;
307 friend class TaskManagerBrowserTest;
308 FRIEND_TEST_ALL_PREFIXES(ExtensionApiTest, ProcessesVsTaskManager);
309 FRIEND_TEST_ALL_PREFIXES(TaskManagerTest, RefreshCalled);
310 FRIEND_TEST_ALL_PREFIXES(TaskManagerWindowControllerTest,
311 SelectionAdaptsToSorting);
314 IDLE = 0, // Currently not updating.
315 TASK_PENDING, // An update task is pending.
316 STOPPING // A update task is pending and it should stop the update.
319 // The delay between updates of the information (in ms).
320 #if defined(OS_MACOSX)
321 // Match Activity Monitor's default refresh rate.
322 static const int kUpdateTimeMs = 2000;
324 static const int kUpdateTimeMs = 1000;
327 // Values cached per resource. Values are validated on demand. The is_XXX
328 // members indicate if a value is valid.
329 struct PerResourceValues {
331 ~PerResourceValues();
334 base::string16 title;
336 bool is_profile_name_valid;
337 base::string16 profile_name;
339 // No is_network_usage since default (0) is fine.
342 bool is_process_id_valid;
343 base::ProcessId process_id;
345 bool is_webcore_stats_valid;
346 blink::WebCache::ResourceTypeStats webcore_stats;
348 bool is_sqlite_memory_bytes_valid;
349 size_t sqlite_memory_bytes;
351 bool is_v8_memory_valid;
352 size_t v8_memory_allocated;
353 size_t v8_memory_used;
356 // Values cached per process. Values are validated on demand. The is_XXX
357 // members indicate if a value is valid.
358 struct PerProcessValues {
362 bool is_cpu_usage_valid;
365 bool is_idle_wakeups_valid;
368 bool is_private_and_shared_valid;
369 size_t private_bytes;
372 bool is_physical_memory_valid;
373 size_t physical_memory;
375 bool is_video_memory_valid;
377 bool video_memory_has_duplicates;
379 bool is_gdi_handles_valid;
381 size_t gdi_handles_peak;
383 bool is_user_handles_valid;
385 size_t user_handles_peak;
387 bool is_nacl_debug_stub_port_valid;
388 int nacl_debug_stub_port;
391 typedef std::vector<task_manager::Resource*> ResourceList;
392 typedef std::vector<scoped_refptr<task_manager::ResourceProvider> >
393 ResourceProviderList;
394 typedef std::map<base::ProcessHandle, ResourceList> GroupMap;
395 typedef std::map<base::ProcessHandle, base::ProcessMetrics*> MetricsMap;
396 typedef std::map<task_manager::Resource*, int64> ResourceValueMap;
397 typedef std::map<task_manager::Resource*,
398 PerResourceValues> PerResourceCache;
399 typedef std::map<base::ProcessHandle, PerProcessValues> PerProcessCache;
401 // This struct is used to exchange information between the io and ui threads.
402 struct BytesReadParam {
403 BytesReadParam(int origin_pid,
407 : origin_pid(origin_pid),
410 byte_count(byte_count) {}
412 // The process ID that triggered the request. For plugin requests this
413 // will differ from the renderer process ID.
416 // The child ID of the process this request was routed through.
425 // Callback from the timer to refresh. Invokes Refresh() as appropriate.
426 void RefreshCallback();
428 void RefreshVideoMemoryUsageStats();
430 // Returns the network usage (in bytes per seconds) for the specified
431 // resource. That's the value retrieved at the last timer's tick.
432 int64 GetNetworkUsageForResource(task_manager::Resource* resource) const;
434 // Called on the UI thread when some bytes are read.
435 void BytesRead(BytesReadParam param);
437 void MultipleBytesRead(const std::vector<BytesReadParam>* params);
439 // Notifies the UI thread about all the bytes read. Allows for coalescing
440 // multiple bytes read into a single task for the UI thread. This is important
441 // for when downloading a lot of data on the IO thread, since posting a Task
442 // for each one is expensive.
443 void NotifyMultipleBytesRead();
445 // Called on the IO thread to start/stop updating byte counts.
446 void SetUpdatingByteCount(bool is_updating);
448 // Returns the network usage (in byte per second) that should be displayed for
449 // the passed |resource|. -1 means the information is not available for that
451 int64 GetNetworkUsage(task_manager::Resource* resource) const;
453 // Returns the CPU usage (in %) that should be displayed for the passed
455 double GetCPUUsage(task_manager::Resource* resource) const;
457 // Returns the idle wakeups that should be displayed for the passed
459 int GetIdleWakeupsPerSecond(task_manager::Resource* resource) const;
461 // Given a number, this function returns the formatted string that should be
462 // displayed in the task manager's memory cell.
463 base::string16 GetMemCellText(int64 number) const;
465 // Verifies the private and shared memory for |handle| is valid in
466 // |per_process_cache_|. Returns true if the data in |per_process_cache_| is
468 bool CachePrivateAndSharedMemory(base::ProcessHandle handle) const;
470 // Verifies |webcore_stats| in |per_resource_cache_|, returning true on
472 bool CacheWebCoreStats(int index) const;
474 // Verifies |v8_memory_allocated| and |v8_memory_used| in
475 // |per_resource_cache_|. Returns true if valid, false if not valid.
476 bool CacheV8Memory(int index) const;
478 // Adds a resource provider to be managed.
479 void AddResourceProvider(task_manager::ResourceProvider* provider);
481 // Returns the PerResourceValues for the specified index.
482 PerResourceValues& GetPerResourceValues(int index) const;
484 // Returns the Resource for the specified index.
485 task_manager::Resource* GetResource(int index) const;
487 // The list of providers to the task manager. They are ref counted.
488 ResourceProviderList providers_;
490 // The list of all the resources displayed in the task manager. They are owned
491 // by the ResourceProviders.
492 ResourceList resources_;
494 // A map to keep tracks of the grouped resources (they are grouped if they
495 // share the same process). The groups (the Resources vectors) are owned by
496 // the model (but the actual Resources are owned by the ResourceProviders).
499 // A map to retrieve the process metrics for a process. The ProcessMetrics are
500 // owned by the model.
501 MetricsMap metrics_map_;
503 // A map that keeps track of the number of bytes read per process since last
504 // tick. The Resources are owned by the ResourceProviders.
505 ResourceValueMap current_byte_count_map_;
507 // A map that contains the video memory usage for a process
508 content::GPUVideoMemoryUsageStats video_memory_usage_stats_;
510 // Set to true when we've requested video stats and false once we get them.
511 bool pending_video_memory_usage_stats_update_;
513 // An observer waiting for video memory usage stats updates from the GPU
515 scoped_ptr<TaskManagerModelGpuDataManagerObserver>
516 video_memory_usage_stats_observer_;
518 ObserverList<TaskManagerModelObserver> observer_list_;
520 // How many calls to StartUpdating have been made without matching calls to
522 int update_requests_;
524 // How many calls to StartListening have been made without matching calls to
526 int listen_requests_;
528 // Whether we are currently in the process of updating.
529 UpdateState update_state_;
531 // Whether the IO thread is currently in the process of updating; accessed
532 // only on the IO thread.
533 bool is_updating_byte_count_;
535 // Buffer for coalescing BytesReadParam so we don't have to post a task on
536 // each NotifyBytesRead() call.
537 std::vector<BytesReadParam> bytes_read_buffer_;
539 std::vector<base::Closure> on_data_ready_callbacks_;
541 // All per-Resource values are stored here.
542 mutable PerResourceCache per_resource_cache_;
544 // All per-Process values are stored here.
545 mutable PerProcessCache per_process_cache_;
547 DISALLOW_COPY_AND_ASSIGN(TaskManagerModel);
550 #endif // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_