1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CHROME_BROWSER_METRICS_PLUGIN_METRICS_PROVIDER_H_
6 #define CHROME_BROWSER_METRICS_PLUGIN_METRICS_PROVIDER_H_
11 #include "base/basictypes.h"
12 #include "base/gtest_prod_util.h"
13 #include "base/memory/weak_ptr.h"
14 #include "base/strings/string16.h"
15 #include "components/metrics/metrics_provider.h"
16 #include "content/public/browser/browser_child_process_observer.h"
26 class PrefRegistrySimple;
29 // PluginMetricsProvider is responsible for adding out plugin information to
31 class PluginMetricsProvider : public metrics::MetricsProvider,
32 public content::BrowserChildProcessObserver {
34 explicit PluginMetricsProvider(PrefService* local_state);
35 virtual ~PluginMetricsProvider();
37 // Fetches plugin information data asynchronously and calls |done_callback|
39 void GetPluginInformation(const base::Closure& done_callback);
41 // metrics::MetricsDataProvider:
42 virtual void ProvideSystemProfileMetrics(
43 metrics::SystemProfileProto* system_profile_proto) OVERRIDE;
44 virtual void ProvideStabilityMetrics(
45 metrics::SystemProfileProto* system_profile_proto) OVERRIDE;
46 virtual void ClearSavedStabilityMetrics() OVERRIDE;
48 // Notifies the provider about an error loading the plugin at |plugin_path|.
49 void LogPluginLoadingError(const base::FilePath& plugin_path);
51 // Sets this provider's list of plugins, exposed for testing.
52 void SetPluginsForTesting(const std::vector<content::WebPluginInfo>& plugins);
54 // Returns true if process of type |type| should be counted as a plugin
55 // process, and false otherwise.
56 static bool IsPluginProcess(int process_type);
58 // Registers local state prefs used by this class.
59 static void RegisterPrefs(PrefRegistrySimple* registry);
62 FRIEND_TEST_ALL_PREFIXES(PluginMetricsProviderTest,
63 RecordCurrentStateWithDelay);
64 FRIEND_TEST_ALL_PREFIXES(PluginMetricsProviderTest,
65 RecordCurrentStateIfPending);
66 FRIEND_TEST_ALL_PREFIXES(PluginMetricsProviderTest,
67 ProvideStabilityMetricsWhenPendingTask);
68 struct ChildProcessStats;
70 // Receives the plugin list from the PluginService and calls |done_callback|.
71 void OnGotPlugins(const base::Closure& done_callback,
72 const std::vector<content::WebPluginInfo>& plugins);
74 // Returns reference to ChildProcessStats corresponding to |data|.
75 ChildProcessStats& GetChildProcessStats(
76 const content::ChildProcessData& data);
78 // Saves plugin information to local state.
79 void RecordCurrentState();
81 // Posts a delayed task for RecordCurrentState. Returns true if new task is
82 // posted and false if there was one already waiting for execution.
83 // The param delay_sec is for unit tests.
84 bool RecordCurrentStateWithDelay(int delay_ms);
86 // If a delayed RecordCurrnetState task exists then cancels it, calls
87 // RecordCurrentState immediately and returns true. Otherwise returns false.
88 bool RecordCurrentStateIfPending();
90 // content::BrowserChildProcessObserver:
91 virtual void BrowserChildProcessHostConnected(
92 const content::ChildProcessData& data) OVERRIDE;
93 virtual void BrowserChildProcessCrashed(
94 const content::ChildProcessData& data) OVERRIDE;
95 virtual void BrowserChildProcessInstanceCreated(
96 const content::ChildProcessData& data) OVERRIDE;
98 PrefService* local_state_;
100 // The list of plugins which was retrieved on the file thread.
101 std::vector<content::WebPluginInfo> plugins_;
103 // Buffer of child process notifications for quick access.
104 std::map<base::string16, ChildProcessStats> child_process_stats_buffer_;
106 base::WeakPtrFactory<PluginMetricsProvider> weak_ptr_factory_;
108 DISALLOW_COPY_AND_ASSIGN(PluginMetricsProvider);
111 #endif // CHROME_BROWSER_METRICS_PLUGIN_METRICS_PROVIDER_H_