TaskManager: allows referencing task resources from the web ui.

BUG=102075


Review URL: http://codereview.chromium.org/8343060

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107740 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 27 insertions, 2 deletions

diff --git a/chrome/browser/task_manager/task_manager.cc b/chrome/browser/task_manager/task_manager.cc
index 9668132..fe26022 100644
--- a/chrome/browser/task_manager/task_manager.cc
+++ b/chrome/browser/task_manager/task_manager.cc
@@ -78,7 +78,8 @@ string16 FormatStatsSize(const WebKit::WebCache::ResourceTypeStat& stat) {
 TaskManagerModel::TaskManagerModel(TaskManager* task_manager)
     : update_requests_(0),
       update_state_(IDLE),
-      goat_salt_(rand()) {
+      goat_salt_(rand()),
+      last_unique_id_(0) {
   AddResourceProvider(
       new TaskManagerBrowserProcessResourceProvider(task_manager));
   AddResourceProvider(
@@ -118,6 +119,11 @@ void TaskManagerModel::RemoveObserver(TaskManagerModelObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
+int TaskManagerModel::GetResourceUniqueId(int index) const {
+  CHECK_LT(index, ResourceCount());
+  return resources_[index]->get_unique_id();
+}
+
 string16 TaskManagerModel::GetResourceTitle(int index) const {
   CHECK_LT(index, ResourceCount());
   return resources_[index]->GetTitle();
@@ -561,10 +567,12 @@ bool TaskManagerModel::GetV8Memory(int index, size_t* result) const {
 }
 
 bool TaskManagerModel::CanInspect(int index) const {
+  CHECK_LT(index, ResourceCount());
   return resources_[index]->CanInspect();
 }
 
 void TaskManagerModel::Inspect(int index) const {
+  CHECK_LT(index, ResourceCount());
   resources_[index]->Inspect();
 }
 
@@ -642,6 +650,8 @@ void TaskManagerModel::AddResourceProvider(
 }
 
 void TaskManagerModel::AddResource(TaskManager::Resource* resource) {
+  resource->unique_id_ = ++last_unique_id_;
+
   base::ProcessHandle process = resource->GetProcess();
 
   ResourceList* group_entries = NULL;
@@ -767,6 +777,7 @@ void TaskManagerModel::Clear() {
     FOR_EACH_OBSERVER(TaskManagerModelObserver, observer_list_,
                       OnItemsRemoved(0, size));
   }
+  last_unique_id_ = 0;
 }
 
 void TaskManagerModel::ModelChanged() {
diff --git a/chrome/browser/task_manager/task_manager.h b/chrome/browser/task_manager/task_manager.h
index f794533..27658b5 100644
--- a/chrome/browser/task_manager/task_manager.h
+++ b/chrome/browser/task_manager/task_manager.h
@@ -131,7 +131,17 @@ class TaskManager {
         TASKMANAGER_RESOURCE_TYPE_LIST(TASKMANAGER_RESOURCE_TYPE_LIST_AS_STRING)
         default: return "UNKNOWN";
       }
-    };
+    }
+
+    // Returns resource identifier that is unique within single task manager
+    // session (between StartUpdating and StopUpdating).
+    int get_unique_id() { return unique_id_; }
+   protected:
+    Resource() : unique_id_(0) {}
+
+   private:
+    friend class TaskManagerModel;
+    int unique_id_;
   };
 
   // ResourceProviders are responsible for adding/removing resources to the task
@@ -262,6 +272,7 @@ class TaskManagerModel : public base::RefCountedThreadSafe<TaskManagerModel> {
   int64 GetNetworkUsage(int index) const;
   double GetCPUUsage(int index) const;
   int GetProcessId(int index) const;
+  int GetResourceUniqueId(int index) const;
 
   // Methods to return formatted resource information.
   string16 GetResourceTitle(int index) const;
@@ -515,6 +526,9 @@ class TaskManagerModel : public base::RefCountedThreadSafe<TaskManagerModel> {
   // A salt lick for the goats.
   int goat_salt_;
 
+  // Resource identifier that is unique within single session.
+  int last_unique_id_;
+
   DISALLOW_COPY_AND_ASSIGN(TaskManagerModel);
 };