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// 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.
#include "chrome/browser/metrics/chrome_stability_metrics_provider.h"
#include <vector>
#include "base/logging.h"
#include "base/metrics/histogram.h"
#include "base/metrics/sparse_histogram.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "components/metrics/proto/system_profile.pb.h"
#include "content/public/browser/child_process_data.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/user_metrics.h"
#include "content/public/browser/web_contents.h"
#include "extensions/browser/process_map.h"
#if defined(ENABLE_PLUGINS)
#include "chrome/browser/metrics/plugin_metrics_provider.h"
#endif
#if defined(OS_WIN)
#include <windows.h> // Needed for STATUS_* codes
#endif
namespace {
void IncrementPrefValue(const char* path) {
PrefService* pref = g_browser_process->local_state();
DCHECK(pref);
int value = pref->GetInteger(path);
pref->SetInteger(path, value + 1);
}
void IncrementLongPrefsValue(const char* path) {
PrefService* pref = g_browser_process->local_state();
DCHECK(pref);
int64 value = pref->GetInt64(path);
pref->SetInt64(path, value + 1);
}
// Converts an exit code into something that can be inserted into our
// histograms (which expect non-negative numbers less than MAX_INT).
int MapCrashExitCodeForHistogram(int exit_code) {
#if defined(OS_WIN)
// Since |abs(STATUS_GUARD_PAGE_VIOLATION) == MAX_INT| it causes problems in
// histograms.cc. Solve this by remapping it to a smaller value, which
// hopefully doesn't conflict with other codes.
if (exit_code == STATUS_GUARD_PAGE_VIOLATION)
return 0x1FCF7EC3; // Randomly picked number.
#endif
return std::abs(exit_code);
}
} // namespace
ChromeStabilityMetricsProvider::ChromeStabilityMetricsProvider() {
BrowserChildProcessObserver::Add(this);
}
ChromeStabilityMetricsProvider::~ChromeStabilityMetricsProvider() {
BrowserChildProcessObserver::Remove(this);
}
void ChromeStabilityMetricsProvider::OnRecordingEnabled() {
registrar_.Add(this,
content::NOTIFICATION_LOAD_START,
content::NotificationService::AllSources());
registrar_.Add(this,
content::NOTIFICATION_RENDERER_PROCESS_CLOSED,
content::NotificationService::AllSources());
registrar_.Add(this,
content::NOTIFICATION_RENDER_WIDGET_HOST_HANG,
content::NotificationService::AllSources());
}
void ChromeStabilityMetricsProvider::OnRecordingDisabled() {
registrar_.RemoveAll();
}
void ChromeStabilityMetricsProvider::ProvideStabilityMetrics(
metrics::SystemProfileProto* system_profile_proto) {
PrefService* pref = g_browser_process->local_state();
metrics::SystemProfileProto_Stability* stability_proto =
system_profile_proto->mutable_stability();
int count = pref->GetInteger(prefs::kStabilityPageLoadCount);
if (count) {
stability_proto->set_page_load_count(count);
pref->SetInteger(prefs::kStabilityPageLoadCount, 0);
}
count = pref->GetInteger(prefs::kStabilityChildProcessCrashCount);
if (count) {
stability_proto->set_child_process_crash_count(count);
pref->SetInteger(prefs::kStabilityChildProcessCrashCount, 0);
}
count = pref->GetInteger(prefs::kStabilityRendererCrashCount);
if (count) {
stability_proto->set_renderer_crash_count(count);
pref->SetInteger(prefs::kStabilityRendererCrashCount, 0);
}
count = pref->GetInteger(prefs::kStabilityExtensionRendererCrashCount);
if (count) {
stability_proto->set_extension_renderer_crash_count(count);
pref->SetInteger(prefs::kStabilityExtensionRendererCrashCount, 0);
}
count = pref->GetInteger(prefs::kStabilityRendererHangCount);
if (count) {
stability_proto->set_renderer_hang_count(count);
pref->SetInteger(prefs::kStabilityRendererHangCount, 0);
}
}
// static
void ChromeStabilityMetricsProvider::RegisterPrefs(
PrefRegistrySimple* registry) {
registry->RegisterIntegerPref(prefs::kStabilityPageLoadCount, 0);
registry->RegisterIntegerPref(prefs::kStabilityRendererCrashCount, 0);
registry->RegisterIntegerPref(prefs::kStabilityExtensionRendererCrashCount,
0);
registry->RegisterIntegerPref(prefs::kStabilityRendererHangCount, 0);
registry->RegisterIntegerPref(prefs::kStabilityChildProcessCrashCount, 0);
registry->RegisterInt64Pref(prefs::kUninstallMetricsPageLoadCount, 0);
}
void ChromeStabilityMetricsProvider::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case content::NOTIFICATION_LOAD_START: {
content::NavigationController* controller =
content::Source<content::NavigationController>(source).ptr();
content::WebContents* web_contents = controller->GetWebContents();
LogLoadStarted(web_contents);
break;
}
case content::NOTIFICATION_RENDERER_PROCESS_CLOSED: {
content::RenderProcessHost::RendererClosedDetails* process_details =
content::Details<content::RenderProcessHost::RendererClosedDetails>(
details).ptr();
content::RenderProcessHost* host =
content::Source<content::RenderProcessHost>(source).ptr();
LogRendererCrash(
host, process_details->status, process_details->exit_code);
break;
}
case content::NOTIFICATION_RENDER_WIDGET_HOST_HANG:
LogRendererHang();
break;
default:
NOTREACHED();
break;
}
}
void ChromeStabilityMetricsProvider::BrowserChildProcessCrashed(
const content::ChildProcessData& data) {
#if defined(ENABLE_PLUGINS)
// Exclude plugin crashes from the count below because we report them via
// a separate UMA metric.
if (PluginMetricsProvider::IsPluginProcess(data.process_type))
return;
#endif
IncrementPrefValue(prefs::kStabilityChildProcessCrashCount);
}
void ChromeStabilityMetricsProvider::LogLoadStarted(
content::WebContents* web_contents) {
content::RecordAction(base::UserMetricsAction("PageLoad"));
HISTOGRAM_ENUMERATION("Chrome.UmaPageloadCounter", 1, 2);
IncrementPrefValue(prefs::kStabilityPageLoadCount);
IncrementLongPrefsValue(prefs::kUninstallMetricsPageLoadCount);
// We need to save the prefs, as page load count is a critical stat, and it
// might be lost due to a crash :-(.
}
void ChromeStabilityMetricsProvider::LogRendererCrash(
content::RenderProcessHost* host,
base::TerminationStatus status,
int exit_code) {
bool was_extension_process =
extensions::ProcessMap::Get(host->GetBrowserContext())
->Contains(host->GetID());
if (status == base::TERMINATION_STATUS_PROCESS_CRASHED ||
status == base::TERMINATION_STATUS_ABNORMAL_TERMINATION) {
if (was_extension_process) {
IncrementPrefValue(prefs::kStabilityExtensionRendererCrashCount);
UMA_HISTOGRAM_SPARSE_SLOWLY("CrashExitCodes.Extension",
MapCrashExitCodeForHistogram(exit_code));
} else {
IncrementPrefValue(prefs::kStabilityRendererCrashCount);
UMA_HISTOGRAM_SPARSE_SLOWLY("CrashExitCodes.Renderer",
MapCrashExitCodeForHistogram(exit_code));
}
UMA_HISTOGRAM_PERCENTAGE("BrowserRenderProcessHost.ChildCrashes",
was_extension_process ? 2 : 1);
} else if (status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED) {
UMA_HISTOGRAM_PERCENTAGE("BrowserRenderProcessHost.ChildKills",
was_extension_process ? 2 : 1);
} else if (status == base::TERMINATION_STATUS_STILL_RUNNING) {
UMA_HISTOGRAM_PERCENTAGE("BrowserRenderProcessHost.DisconnectedAlive",
was_extension_process ? 2 : 1);
}
}
void ChromeStabilityMetricsProvider::LogRendererHang() {
IncrementPrefValue(prefs::kStabilityRendererHangCount);
}
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