| // Copyright 2014 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. |
| |
| #if !defined(OS_ANDROID) |
| |
| #include "chrome/browser/metrics/first_web_contents_profiler.h" |
| |
| #include <string> |
| |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/time/time.h" |
| #include "build/build_config.h" |
| #include "chrome/browser/ui/browser.h" |
| #include "chrome/browser/ui/browser_list.h" |
| #include "chrome/browser/ui/tabs/tab_strip_model.h" |
| #include "components/metrics/profiler/tracking_synchronizer.h" |
| #include "components/metrics/proto/profiler_event.pb.h" |
| #include "components/startup_metric_utils/browser/startup_metric_utils.h" |
| #include "content/public/browser/navigation_handle.h" |
| |
| // static |
| void FirstWebContentsProfiler::Start() { |
| for (auto* browser : *BrowserList::GetInstance()) { |
| content::WebContents* web_contents = |
| browser->tab_strip_model()->GetActiveWebContents(); |
| if (web_contents) { |
| // FirstWebContentsProfiler owns itself and is also bound to |
| // |web_contents|'s lifetime by observing WebContentsDestroyed(). |
| new FirstWebContentsProfiler(web_contents); |
| return; |
| } |
| } |
| } |
| |
| FirstWebContentsProfiler::FirstWebContentsProfiler( |
| content::WebContents* web_contents) |
| : content::WebContentsObserver(web_contents), |
| collected_paint_metric_(false), |
| collected_load_metric_(false), |
| collected_main_navigation_start_metric_(false), |
| collected_main_navigation_finished_metric_(false) {} |
| |
| void FirstWebContentsProfiler::DidFirstVisuallyNonEmptyPaint() { |
| if (collected_paint_metric_) |
| return; |
| if (startup_metric_utils::WasNonBrowserUIDisplayed()) { |
| FinishedCollectingMetrics(FinishReason::ABANDON_BLOCKING_UI); |
| return; |
| } |
| |
| collected_paint_metric_ = true; |
| startup_metric_utils::RecordFirstWebContentsNonEmptyPaint( |
| base::TimeTicks::Now()); |
| |
| metrics::TrackingSynchronizer::OnProfilingPhaseCompleted( |
| metrics::ProfilerEventProto::EVENT_FIRST_NONEMPTY_PAINT); |
| |
| if (IsFinishedCollectingMetrics()) |
| FinishedCollectingMetrics(FinishReason::DONE); |
| } |
| |
| void FirstWebContentsProfiler::DocumentOnLoadCompletedInMainFrame() { |
| if (collected_load_metric_) |
| return; |
| if (startup_metric_utils::WasNonBrowserUIDisplayed()) { |
| FinishedCollectingMetrics(FinishReason::ABANDON_BLOCKING_UI); |
| return; |
| } |
| |
| collected_load_metric_ = true; |
| startup_metric_utils::RecordFirstWebContentsMainFrameLoad( |
| base::TimeTicks::Now()); |
| |
| if (IsFinishedCollectingMetrics()) |
| FinishedCollectingMetrics(FinishReason::DONE); |
| } |
| |
| void FirstWebContentsProfiler::DidStartNavigation( |
| content::NavigationHandle* navigation_handle) { |
| if (collected_main_navigation_start_metric_) |
| return; |
| if (startup_metric_utils::WasNonBrowserUIDisplayed()) { |
| FinishedCollectingMetrics(FinishReason::ABANDON_BLOCKING_UI); |
| return; |
| } |
| |
| // The first navigation has to be the main frame's. |
| DCHECK(navigation_handle->IsInMainFrame()); |
| |
| collected_main_navigation_start_metric_ = true; |
| startup_metric_utils::RecordFirstWebContentsMainNavigationStart( |
| base::TimeTicks::Now()); |
| } |
| |
| void FirstWebContentsProfiler::DidFinishNavigation( |
| content::NavigationHandle* navigation_handle) { |
| if (collected_main_navigation_finished_metric_) { |
| // Abandon profiling on a top-level navigation to a different page as it: |
| // (1) is no longer a fair timing; and |
| // (2) can cause http://crbug.com/525209 where one of the timing |
| // heuristics (e.g. first paint) didn't fire for the initial content |
| // but fires after a lot of idle time when the user finally navigates |
| // to another page that does trigger it. |
| if (navigation_handle->IsInMainFrame() && |
| navigation_handle->HasCommitted() && |
| !navigation_handle->IsSamePage()) { |
| FinishedCollectingMetrics(FinishReason::ABANDON_NEW_NAVIGATION); |
| } |
| return; |
| } |
| |
| if (startup_metric_utils::WasNonBrowserUIDisplayed()) { |
| FinishedCollectingMetrics(FinishReason::ABANDON_BLOCKING_UI); |
| return; |
| } |
| |
| // The first navigation has to be the main frame's. |
| DCHECK(navigation_handle->IsInMainFrame()); |
| |
| if (!navigation_handle->HasCommitted() || |
| navigation_handle->IsErrorPage()) { |
| FinishedCollectingMetrics(FinishReason::ABANDON_NAVIGATION_ERROR); |
| return; |
| } |
| |
| collected_main_navigation_finished_metric_ = true; |
| startup_metric_utils::RecordFirstWebContentsMainNavigationFinished( |
| base::TimeTicks::Now()); |
| } |
| |
| void FirstWebContentsProfiler::WasHidden() { |
| // Stop profiling if the content gets hidden as its load may be deprioritized |
| // and timing it becomes meaningless. |
| FinishedCollectingMetrics(FinishReason::ABANDON_CONTENT_HIDDEN); |
| } |
| |
| void FirstWebContentsProfiler::WebContentsDestroyed() { |
| FinishedCollectingMetrics(FinishReason::ABANDON_CONTENT_DESTROYED); |
| } |
| |
| bool FirstWebContentsProfiler::IsFinishedCollectingMetrics() { |
| return collected_paint_metric_ && collected_load_metric_; |
| } |
| |
| void FirstWebContentsProfiler::FinishedCollectingMetrics( |
| FinishReason finish_reason) { |
| UMA_HISTOGRAM_ENUMERATION("Startup.FirstWebContents.FinishReason", |
| finish_reason, FinishReason::ENUM_MAX); |
| if (!collected_paint_metric_) { |
| UMA_HISTOGRAM_ENUMERATION("Startup.FirstWebContents.FinishReason_NoPaint", |
| finish_reason, FinishReason::ENUM_MAX); |
| } |
| if (!collected_load_metric_) { |
| UMA_HISTOGRAM_ENUMERATION("Startup.FirstWebContents.FinishReason_NoLoad", |
| finish_reason, FinishReason::ENUM_MAX); |
| } |
| |
| delete this; |
| } |
| |
| #endif // !defined(OS_ANDROID) |