| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_CHROMEOS_SWAP_METRICS_H_ |
| #define CHROME_BROWSER_CHROMEOS_SWAP_METRICS_H_ |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/ref_counted.h" |
| #include "chrome/browser/ui/browser_list_observer.h" |
| #include "chrome/browser/ui/tabs/tab_strip_model_observer.h" |
| #include "ui/events/event_handler.h" |
| |
| namespace base { |
| class FilePath; |
| } |
| |
| namespace chromeos { |
| |
| // Watches for bursts of swap activity and CPU consumption after interesting UI |
| // events like tab switch or scrolling, recording the values to UMA statistics. |
| // Only records stats for the last active browser. |
| class SwapMetrics : public chrome::BrowserListObserver, |
| public TabStripModelObserver, |
| public ui::EventHandler { |
| public: |
| SwapMetrics(); |
| virtual ~SwapMetrics(); |
| |
| // chrome::BrowserListObserver overrides: |
| virtual void OnBrowserRemoved(Browser* browser) OVERRIDE; |
| virtual void OnBrowserSetLastActive(Browser* browser) OVERRIDE; |
| |
| // TabStripModelObserver overrides: |
| virtual void ActiveTabChanged(content::WebContents* old_contents, |
| content::WebContents* new_contents, |
| int index, |
| int reason) OVERRIDE; |
| |
| // ui::EventHandler overrides: |
| virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE; |
| virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE; |
| |
| private: |
| class Backend; |
| |
| // Posts a task to record metrics for |sample_index| after |delay_ms|. |
| static void PostTaskRecordMetrics(scoped_refptr<Backend> backend, |
| size_t sample_index, |
| int delay_ms); |
| |
| // Starts a metrics collection run, canceling any run already in progress. |
| void StartMetricsCollection(const std::string& reason); |
| |
| // Sets the browser being monitored for events. |
| void SetBrowser(Browser* browser); |
| |
| // Browser being monitored for UI events. |
| Browser* browser_; |
| |
| // Backend to handle processing in the blocking thread pool. |
| scoped_refptr<Backend> backend_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SwapMetrics); |
| }; |
| |
| } // namespace chromeos |
| |
| #endif // CHROME_BROWSER_CHROMEOS_SWAP_METRICS_H_ |