| // Copyright (c) 2012 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. |
| |
| // TODO(bmcquade): delete this class in October 2016, as it is deprecated by the |
| // new PageLoad.* UMA histograms. |
| |
| #include "chrome/renderer/page_load_histograms.h" |
| |
| #include <stddef.h> |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/command_line.h" |
| #include "base/logging.h" |
| #include "base/metrics/field_trial.h" |
| #include "base/metrics/histogram.h" |
| #include "base/metrics/persistent_histogram_allocator.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_split.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/time/time.h" |
| #include "chrome/common/chrome_switches.h" |
| #include "chrome/renderer/searchbox/search_bouncer.h" |
| #include "content/public/common/content_constants.h" |
| #include "content/public/renderer/document_state.h" |
| #include "content/public/renderer/render_frame.h" |
| #include "content/public/renderer/render_thread.h" |
| #include "content/public/renderer/render_view.h" |
| #include "extensions/common/url_pattern.h" |
| #include "net/base/url_util.h" |
| #include "net/http/http_response_headers.h" |
| #include "third_party/WebKit/public/platform/URLConversion.h" |
| #include "third_party/WebKit/public/platform/WebURLRequest.h" |
| #include "third_party/WebKit/public/platform/WebURLResponse.h" |
| #include "third_party/WebKit/public/web/WebDocument.h" |
| #include "third_party/WebKit/public/web/WebLocalFrame.h" |
| #include "third_party/WebKit/public/web/WebPerformance.h" |
| #include "third_party/WebKit/public/web/WebView.h" |
| #include "url/gurl.h" |
| |
| #if defined(ENABLE_EXTENSIONS) |
| #include "chrome/renderer/extensions/chrome_extensions_renderer_client.h" |
| #include "extensions/renderer/dispatcher.h" |
| #endif |
| |
| using blink::WebDataSource; |
| using blink::WebLocalFrame; |
| using blink::WebPerformance; |
| using blink::WebString; |
| using base::Time; |
| using base::TimeDelta; |
| using content::DocumentState; |
| |
| const size_t kPLTCount = 100; |
| |
| namespace { |
| |
| // ID indicating that no GWS-Chrome joint experiment is active. |
| const int kNoExperiment = 0; |
| |
| // Max ID of GWS-Chrome joint experiment. If you change this value, please |
| // update PLT_HISTOGRAM_WITH_GWS_VARIANT accordingly. |
| const int kMaxExperimentID = 20; |
| |
| TimeDelta kPLTMin() { |
| return TimeDelta::FromMilliseconds(10); |
| } |
| TimeDelta kPLTMax() { |
| return TimeDelta::FromMinutes(10); |
| } |
| |
| // This function corresponds to PLT_HISTOGRAM macro invocation without caching. |
| // Use this for PLT histograms with dynamically generated names, which |
| // otherwise can't use the caching PLT_HISTOGRAM macro without code duplication. |
| void PltHistogramWithNoMacroCaching(const std::string& name, |
| const TimeDelta& sample) { |
| // The parameters should exacly match the parameters in |
| // UMA_HISTOGRAM_CUSTOM_TIMES macro. |
| base::HistogramBase* histogram_pointer = base::Histogram::FactoryTimeGet( |
| name, kPLTMin(), kPLTMax(), kPLTCount, |
| base::HistogramBase::kUmaTargetedHistogramFlag); |
| histogram_pointer->AddTime(sample); |
| } |
| |
| // This records UMA corresponding to the PLT_HISTOGRAM macro without caching. |
| void PltHistogramWithGwsPreview(const char* name, |
| const TimeDelta& sample, |
| bool is_preview, |
| int experiment_id) { |
| std::string preview_suffix = is_preview ? "_Preview" : "_NoPreview"; |
| PltHistogramWithNoMacroCaching(name + preview_suffix, sample); |
| |
| if (experiment_id != kNoExperiment) { |
| std::string name_with_experiment_id = base::StringPrintf( |
| "%s%s_Experiment%d", name, preview_suffix.c_str(), experiment_id); |
| PltHistogramWithNoMacroCaching(name_with_experiment_id, sample); |
| } |
| } |
| |
| #define PLT_HISTOGRAM(name, sample) \ |
| UMA_HISTOGRAM_CUSTOM_TIMES(name, sample, kPLTMin(), kPLTMax(), kPLTCount); |
| |
| #define PLT_HISTOGRAM_WITH_GWS_VARIANT( \ |
| name, sample, came_from_websearch, websearch_chrome_joint_experiment_id, \ |
| is_preview) { \ |
| PLT_HISTOGRAM(name, sample); \ |
| if (came_from_websearch) { \ |
| PLT_HISTOGRAM(base::StringPrintf("%s_FromGWS", name), sample) \ |
| if (websearch_chrome_joint_experiment_id != kNoExperiment) { \ |
| std::string name_with_experiment_id = base::StringPrintf( \ |
| "%s_FromGWS_Experiment%d", \ |
| name, websearch_chrome_joint_experiment_id); \ |
| PltHistogramWithNoMacroCaching(name_with_experiment_id, sample); \ |
| } \ |
| } \ |
| PltHistogramWithGwsPreview(name, sample, is_preview, \ |
| websearch_chrome_joint_experiment_id); \ |
| } |
| |
| // Returns the scheme type of the given URL if its type is one for which we |
| // dump page load histograms. Otherwise returns NULL. |
| URLPattern::SchemeMasks GetSupportedSchemeType(const GURL& url) { |
| if (url.SchemeIs("http")) |
| return URLPattern::SCHEME_HTTP; |
| else if (url.SchemeIs("https")) |
| return URLPattern::SCHEME_HTTPS; |
| return static_cast<URLPattern::SchemeMasks>(0); |
| } |
| |
| // Helper function to check for string in 'via' header. Returns true if |
| // |via_value| is one of the values listed in the Via header. |
| bool ViaHeaderContains(WebLocalFrame* frame, const std::string& via_value) { |
| const char kViaHeaderName[] = "Via"; |
| std::vector<std::string> values; |
| // Multiple via headers have already been coalesced and hence each value |
| // separated by a comma corresponds to a proxy. The value added by a proxy is |
| // not expected to contain any commas. |
| // Example., Via: 1.0 Compression proxy, 1.1 Google Instant Proxy Preview |
| values = base::SplitString( |
| frame->dataSource()->response().httpHeaderField(kViaHeaderName).utf8(), |
| ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); |
| return std::find(values.begin(), values.end(), via_value) != values.end(); |
| } |
| |
| // Returns true if the provided URL is a referrer string that came from |
| // a Google Web Search results page. This is a little non-deterministic |
| // because desktop and mobile websearch differ and sometimes just provide |
| // http://www.google.com/ as the referrer. In the case of /url we can be sure |
| // that it came from websearch but we will be generous and allow for cases |
| // where a non-Google URL was provided a bare Google URL as a referrer. |
| // The domain validation matches the code used by the prerenderer for similar |
| // purposes. |
| // TODO(pmeenan): Remove the fuzzy logic when the referrer is reliable |
| bool IsFromGoogleSearchResult(const GURL& url, const GURL& referrer) { |
| if (!base::StartsWith(referrer.host(), "www.google.", |
| base::CompareCase::SENSITIVE)) |
| return false; |
| if (base::StartsWith(referrer.path(), "/url", |
| base::CompareCase::SENSITIVE)) |
| return true; |
| bool is_possible_search_referrer = |
| referrer.path().empty() || referrer.path() == "/" || |
| base::StartsWith(referrer.path(), "/search", |
| base::CompareCase::SENSITIVE) || |
| base::StartsWith(referrer.path(), "/webhp", |
| base::CompareCase::SENSITIVE); |
| if (is_possible_search_referrer && |
| !base::StartsWith(url.host(), "www.google", |
| base::CompareCase::SENSITIVE)) |
| return true; |
| return false; |
| } |
| |
| // Extracts a Google Web Search and Chrome joint experiment ID from a referrer |
| // that came from a Google Web Search results page. An experiment ID is embedded |
| // in a query string as a "gcjeid=" parameter value. |
| int GetQueryStringBasedExperiment(const GURL& referrer) { |
| std::string value; |
| if (!net::GetValueForKeyInQuery(referrer, "gcjeid", &value)) |
| return kNoExperiment; |
| |
| int experiment_id; |
| if (!base::StringToInt(value, &experiment_id)) |
| return kNoExperiment; |
| if (0 < experiment_id && experiment_id <= kMaxExperimentID) |
| return experiment_id; |
| return kNoExperiment; |
| } |
| |
| void DumpHistograms(const WebPerformance& performance, |
| DocumentState* document_state, |
| bool came_from_websearch, |
| int websearch_chrome_joint_experiment_id, |
| bool is_preview, |
| URLPattern::SchemeMasks scheme_type) { |
| // This function records new histograms based on the Navigation Timing |
| // records. As such, the histograms should not depend on the deprecated timing |
| // information collected in DocumentState. However, here for some reason we |
| // check if document_state->request_time() is null. TODO(ppi): find out why |
| // and remove DocumentState from the parameter list. |
| Time request = document_state->request_time(); |
| |
| Time navigation_start = Time::FromDoubleT(performance.navigationStart()); |
| Time request_start = Time::FromDoubleT(performance.requestStart()); |
| Time response_start = Time::FromDoubleT(performance.responseStart()); |
| Time dom_content_loaded_start = |
| Time::FromDoubleT(performance.domContentLoadedEventStart()); |
| Time load_event_start = Time::FromDoubleT(performance.loadEventStart()); |
| Time load_event_end = Time::FromDoubleT(performance.loadEventEnd()); |
| Time begin = (request.is_null() ? navigation_start : request_start); |
| |
| DCHECK(!navigation_start.is_null()); |
| |
| // It is possible for a document to have navigation_start time, but no |
| // request_start. An example is doing a window.open, which synchronously |
| // loads "about:blank", then using document.write add a meta http-equiv |
| // refresh tag, which causes a navigation. In such case, we will arrive at |
| // this function with no request/response timing data and identical load |
| // start/end values. Avoid logging this case, as it doesn't add any |
| // meaningful information to the histogram. |
| if (request_start.is_null()) |
| return; |
| |
| // TODO(dominich): Investigate conditions under which |load_event_start| and |
| // |load_event_end| may be NULL as in the non-PT_ case below. Examples in |
| // http://crbug.com/112006. |
| // DCHECK(!load_event_start.is_null()); |
| // DCHECK(!load_event_end.is_null()); |
| |
| if (document_state->web_timing_histograms_recorded()) |
| return; |
| document_state->set_web_timing_histograms_recorded(true); |
| |
| // TODO(simonjam): There is no way to distinguish between abandonment and |
| // intentional Javascript navigation before the load event fires. |
| // TODO(dominich): Load type breakdown |
| if (!load_event_start.is_null()) { |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_BeginToFinishDoc", |
| load_event_start - begin, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_CommitToFinishDoc", |
| load_event_start - response_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_RequestToFinishDoc", |
| load_event_start - navigation_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| } |
| if (!load_event_end.is_null()) { |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_BeginToFinish", |
| load_event_end - begin, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_CommitToFinish", |
| load_event_end - response_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_RequestToFinish", |
| load_event_end - navigation_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_StartToFinish", |
| load_event_end - request_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| } |
| if (!load_event_start.is_null() && !load_event_end.is_null()) { |
| PLT_HISTOGRAM("PLT.PT_FinishDocToFinish", |
| load_event_end - load_event_start); |
| } |
| if (!dom_content_loaded_start.is_null()) { |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_RequestToDomContentLoaded", |
| dom_content_loaded_start - navigation_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| } |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_BeginToCommit", |
| response_start - begin, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_RequestToStart", |
| request_start - navigation_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_StartToCommit", |
| response_start - request_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.PT_RequestToCommit", |
| response_start - navigation_start, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| } |
| |
| bool WasWebRequestUsedBySomeExtensions() { |
| #if defined(ENABLE_EXTENSIONS) |
| return ChromeExtensionsRendererClient::GetInstance()->extension_dispatcher() |
| ->WasWebRequestUsedBySomeExtensions(); |
| #else |
| return false; |
| #endif |
| } |
| |
| // These histograms are based on the timing information collected in |
| // DocumentState. They should be transitioned to equivalents based on the |
| // Navigation Timing records (see DumpPerformanceTiming()) or dropped if not |
| // needed. Please do not add new metrics based on DocumentState. |
| void DumpDeprecatedHistograms(const WebPerformance& performance, |
| DocumentState* document_state, |
| bool came_from_websearch, |
| int websearch_chrome_joint_experiment_id, |
| bool is_preview, |
| URLPattern::SchemeMasks scheme_type) { |
| // If we've already dumped, do nothing. |
| // This simple bool works because we only dump for the main frame. |
| if (document_state->load_histograms_recorded()) |
| return; |
| |
| // Abort if any of these is missing. |
| Time start = document_state->start_load_time(); |
| Time commit = document_state->commit_load_time(); |
| Time navigation_start = |
| Time::FromDoubleT(performance.navigationStart()); |
| if (start.is_null() || commit.is_null() || navigation_start.is_null()) |
| return; |
| |
| // We properly handle null values for the next 3 variables. |
| Time request = document_state->request_time(); |
| Time first_paint = document_state->first_paint_time(); |
| Time first_paint_after_load = document_state->first_paint_after_load_time(); |
| Time finish_doc = document_state->finish_document_load_time(); |
| Time finish_all_loads = document_state->finish_load_time(); |
| |
| // Handle case where user hits "stop" or "back" before loading completely. |
| // Note that this makes abandoned page loads be recorded as if they were |
| // completed, polluting the metrics with artifically short completion times. |
| // We are not fixing this as these metrics are being dropped as deprecated. |
| if (finish_doc.is_null()) { |
| finish_doc = Time::Now(); |
| document_state->set_finish_document_load_time(finish_doc); |
| } |
| if (finish_all_loads.is_null()) { |
| finish_all_loads = Time::Now(); |
| document_state->set_finish_load_time(finish_all_loads); |
| } |
| |
| document_state->set_load_histograms_recorded(true); |
| |
| // Note: Client side redirects will have no request time. |
| Time begin = request.is_null() ? start : request; |
| TimeDelta begin_to_finish_doc = finish_doc - begin; |
| TimeDelta begin_to_finish_all_loads = finish_all_loads - begin; |
| TimeDelta start_to_finish_all_loads = finish_all_loads - start; |
| TimeDelta start_to_commit = commit - start; |
| |
| DocumentState::LoadType load_type = document_state->load_type(); |
| |
| // The above code sanitized all values of times, in preparation for creating |
| // actual histograms. The remainder of this code could be run at destructor |
| // time for the document_state, since all data is intact. |
| |
| // Aggregate PLT data across all link types. |
| UMA_HISTOGRAM_ENUMERATION("PLT.LoadType", load_type, |
| DocumentState::kLoadTypeMax); |
| PLT_HISTOGRAM("PLT.StartToCommit", start_to_commit); |
| PLT_HISTOGRAM("PLT.CommitToFinishDoc", finish_doc - commit); |
| PLT_HISTOGRAM("PLT.FinishDocToFinish", finish_all_loads - finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToCommit", commit - begin); |
| PLT_HISTOGRAM("PLT.StartToFinish", start_to_finish_all_loads); |
| if (!request.is_null()) { |
| PLT_HISTOGRAM("PLT.RequestToStart", start - request); |
| PLT_HISTOGRAM("PLT.RequestToFinish", finish_all_loads - request); |
| } |
| PLT_HISTOGRAM("PLT.CommitToFinish", finish_all_loads - commit); |
| |
| std::unique_ptr<TimeDelta> begin_to_first_paint; |
| std::unique_ptr<TimeDelta> commit_to_first_paint; |
| if (!first_paint.is_null()) { |
| // 'first_paint' can be before 'begin' for an unknown reason. |
| // See bug http://crbug.com/125273 for details. |
| if (begin <= first_paint) { |
| begin_to_first_paint.reset(new TimeDelta(first_paint - begin)); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.BeginToFirstPaint", |
| *begin_to_first_paint, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| } else { |
| // Track the frequency and magnitude of cases where first_paint precedes |
| // begin. The current hypothesis is that this is due to using the |
| // non-monotonic timer. If that's the case, we expect first_paint |
| // preceding begin to be rare, and the delta between values to be close to |
| // zero. This is a temporary addition that we will remove once we better |
| // understand the frequency and magnitude of first_paint preceding begin. |
| PLT_HISTOGRAM("PLT.BeginToFirstPaint_Negative", begin - first_paint); |
| } |
| |
| // Conditional was previously a DCHECK. Changed due to multiple bot |
| // failures, listed in crbug.com/383963 |
| if (commit <= first_paint) { |
| commit_to_first_paint.reset(new TimeDelta(first_paint - commit)); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.CommitToFirstPaint", |
| *commit_to_first_paint, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| } |
| } |
| if (!first_paint_after_load.is_null()) { |
| // 'first_paint_after_load' can be before 'begin' for an unknown reason. |
| // See bug http://crbug.com/125273 for details. |
| if (begin <= first_paint_after_load) { |
| PLT_HISTOGRAM("PLT.BeginToFirstPaintAfterLoad", |
| first_paint_after_load - begin); |
| } |
| // Both following conditionals were previously DCHECKs. Changed due to |
| // multiple bot failures, listed in crbug.com/383963 |
| if (commit <= first_paint_after_load) { |
| PLT_HISTOGRAM("PLT.CommitToFirstPaintAfterLoad", |
| first_paint_after_load - commit); |
| } |
| if (finish_all_loads <= first_paint_after_load) { |
| PLT_HISTOGRAM("PLT.FinishToFirstPaintAfterLoad", |
| first_paint_after_load - finish_all_loads); |
| } |
| } |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.BeginToFinishDoc", begin_to_finish_doc, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| PLT_HISTOGRAM_WITH_GWS_VARIANT("PLT.BeginToFinish", begin_to_finish_all_loads, |
| came_from_websearch, |
| websearch_chrome_joint_experiment_id, |
| is_preview); |
| |
| // Load type related histograms. |
| switch (load_type) { |
| case DocumentState::UNDEFINED_LOAD: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_UndefLoad", begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_UndefLoad", begin_to_finish_all_loads); |
| break; |
| case DocumentState::RELOAD: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_Reload", begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_Reload", begin_to_finish_all_loads); |
| break; |
| case DocumentState::HISTORY_LOAD: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_HistoryLoad", begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_HistoryLoad", begin_to_finish_all_loads); |
| break; |
| case DocumentState::NORMAL_LOAD: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_NormalLoad", begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_NormalLoad", begin_to_finish_all_loads); |
| break; |
| case DocumentState::LINK_LOAD_NORMAL: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadNormal", |
| begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadNormal", |
| begin_to_finish_all_loads); |
| break; |
| case DocumentState::LINK_LOAD_RELOAD: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadReload", |
| begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadReload", |
| begin_to_finish_all_loads); |
| break; |
| case DocumentState::LINK_LOAD_CACHE_STALE_OK: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadStaleOk", |
| begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadStaleOk", |
| begin_to_finish_all_loads); |
| break; |
| case DocumentState::LINK_LOAD_CACHE_ONLY: |
| PLT_HISTOGRAM("PLT.BeginToFinishDoc_LinkLoadCacheOnly", |
| begin_to_finish_doc); |
| PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadCacheOnly", |
| begin_to_finish_all_loads); |
| break; |
| default: |
| break; |
| } |
| |
| const bool use_webrequest_histogram = WasWebRequestUsedBySomeExtensions(); |
| if (use_webrequest_histogram) { |
| switch (load_type) { |
| case DocumentState::NORMAL_LOAD: |
| PLT_HISTOGRAM( |
| "PLT.BeginToFinish_NormalLoad_ExtensionWebRequest", |
| begin_to_finish_all_loads); |
| break; |
| case DocumentState::LINK_LOAD_NORMAL: |
| PLT_HISTOGRAM( |
| "PLT.BeginToFinish_LinkLoadNormal_ExtensionWebRequest", |
| begin_to_finish_all_loads); |
| break; |
| case DocumentState::LINK_LOAD_RELOAD: |
| PLT_HISTOGRAM( |
| "PLT.BeginToFinish_LinkLoadReload_ExtensionWebRequest", |
| begin_to_finish_all_loads); |
| break; |
| case DocumentState::LINK_LOAD_CACHE_STALE_OK: |
| PLT_HISTOGRAM( |
| "PLT.BeginToFinish_LinkLoadStaleOk_ExtensionWebRequest", |
| begin_to_finish_all_loads); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| } // namespace |
| |
| PageLoadHistograms::PageLoadHistograms(content::RenderFrame* render_frame) |
| : content::RenderFrameObserver(render_frame), helper_(this) {} |
| |
| PageLoadHistograms::~PageLoadHistograms() { |
| } |
| |
| void PageLoadHistograms::Dump() { |
| WebLocalFrame* frame = render_frame()->GetWebFrame(); |
| |
| // We only dump histograms for main frames. |
| // In the future, it may be interesting to tag subframes and dump them too. |
| DCHECK(frame && !frame->parent()); |
| |
| // Only dump for supported schemes. |
| URLPattern::SchemeMasks scheme_type = |
| GetSupportedSchemeType(frame->document().url()); |
| if (scheme_type == 0) |
| return; |
| |
| // Don't dump stats for the NTP, as PageLoadHistograms should only be recorded |
| // for pages visited due to an explicit user navigation. |
| if (SearchBouncer::GetInstance()->IsNewTabPage(frame->document().url())) { |
| return; |
| } |
| |
| DocumentState* document_state = |
| DocumentState::FromDataSource(frame->dataSource()); |
| |
| bool came_from_websearch = IsFromGoogleSearchResult( |
| frame->document().url(), |
| blink::WebStringToGURL(frame->document().referrer())); |
| int websearch_chrome_joint_experiment_id = kNoExperiment; |
| bool is_preview = false; |
| if (came_from_websearch) { |
| websearch_chrome_joint_experiment_id = GetQueryStringBasedExperiment( |
| blink::WebStringToGURL(frame->document().referrer())); |
| is_preview = ViaHeaderContains(frame, "1.1 Google Instant Proxy Preview"); |
| } |
| |
| // Metrics based on the timing information recorded for the Navigation Timing |
| // API - http://www.w3.org/TR/navigation-timing/. |
| DumpHistograms(frame->performance(), document_state, came_from_websearch, |
| websearch_chrome_joint_experiment_id, is_preview, scheme_type); |
| |
| // Old metrics based on the timing information stored in DocumentState. These |
| // are deprecated and should go away. |
| DumpDeprecatedHistograms( |
| frame->performance(), document_state, came_from_websearch, |
| websearch_chrome_joint_experiment_id, is_preview, scheme_type); |
| |
| // Log the PLT to the info log. |
| LogPageLoadTime(document_state, frame->dataSource()); |
| |
| // If persistent histograms are not enabled, initiate a PostTask here to be |
| // sure that we send the histograms generated. Without this call, pages |
| // that don't have an on-close-handler might generate data that is lost if |
| // the renderer is shutdown abruptly (e.g. the user closed the tab). |
| // TODO(bcwhite): Remove completely when persistence is on-by-default. |
| if (!base::GlobalHistogramAllocator::Get()) { |
| content::RenderThread::Get()->UpdateHistograms( |
| content::kHistogramSynchronizerReservedSequenceNumber); |
| } |
| } |
| |
| void PageLoadHistograms::WillCommitProvisionalLoad() { |
| Dump(); |
| } |
| |
| void PageLoadHistograms::LogPageLoadTime(const DocumentState* document_state, |
| const WebDataSource* ds) const { |
| // Because this function gets called on every page load, |
| // take extra care to optimize it away if logging is turned off. |
| if (logging::LOG_INFO < logging::GetMinLogLevel()) |
| return; |
| |
| DCHECK(document_state); |
| DCHECK(ds); |
| GURL url(ds->request().url()); |
| Time start = document_state->start_load_time(); |
| Time finish = document_state->finish_load_time(); |
| // TODO(mbelshe): should we log more stats? |
| VLOG(1) << "PLT: " << (finish - start).InMilliseconds() << "ms " |
| << url.spec(); |
| } |
| |
| void PageLoadHistograms::OnDestruct() { |
| delete this; |
| } |
| |
| PageLoadHistograms::Helper::Helper(PageLoadHistograms* histograms) |
| : RenderViewObserver(histograms->render_frame()->GetRenderView()), |
| histograms_(histograms) { |
| } |
| |
| void PageLoadHistograms::Helper::ClosePage() { |
| histograms_->Dump(); |
| } |
| |
| void PageLoadHistograms::Helper::OnDestruct() { |
| } |
