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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "components/sync/driver/startup_controller.h" | 5 #include "components/sync/driver/startup_controller.h" |
| 6 | 6 |
| 7 #include <string> | 7 #include <string> |
| 8 | 8 |
| 9 #include "base/command_line.h" | 9 #include "base/command_line.h" |
| 10 #include "base/location.h" | 10 #include "base/location.h" |
| 11 #include "base/metrics/histogram_macros.h" | 11 #include "base/metrics/histogram_macros.h" |
| 12 #include "base/single_thread_task_runner.h" | 12 #include "base/single_thread_task_runner.h" |
| 13 #include "base/strings/string_number_conversions.h" | 13 #include "base/strings/string_number_conversions.h" |
| 14 #include "base/threading/thread_task_runner_handle.h" | 14 #include "base/threading/thread_task_runner_handle.h" |
| 15 #include "components/sync/driver/sync_driver_switches.h" | 15 #include "components/sync/driver/sync_driver_switches.h" |
| 16 #include "components/sync/driver/sync_prefs.h" | 16 #include "components/sync/driver/sync_prefs.h" |
| 17 | 17 |
| 18 namespace browser_sync { | 18 namespace syncer { |
| 19 | 19 |
| 20 namespace { | 20 namespace { |
| 21 | 21 |
| 22 // The amount of time we'll wait to initialize sync if no data type triggers | 22 // The amount of time we'll wait to initialize sync if no data type triggers |
| 23 // initialization via a StartSyncFlare. | 23 // initialization via a StartSyncFlare. |
| 24 const int kDeferredInitFallbackSeconds = 10; | 24 const int kDeferredInitFallbackSeconds = 10; |
| 25 | 25 |
| 26 // Enum (for UMA, primarily) defining different events that cause us to | 26 // Enum (for UMA, primarily) defining different events that cause us to |
| 27 // exit the "deferred" state of initialization and invoke start_backend. | 27 // exit the "deferred" state of initialization and invoke start_backend. |
| 28 enum DeferredInitTrigger { | 28 enum DeferredInitTrigger { |
| 29 // We have received a signal from a SyncableService requesting that sync | 29 // We have received a signal from a SyncableService requesting that sync |
| 30 // starts as soon as possible. | 30 // starts as soon as possible. |
| 31 TRIGGER_DATA_TYPE_REQUEST, | 31 TRIGGER_DATA_TYPE_REQUEST, |
| 32 // No data type requested sync to start and our fallback timer expired. | 32 // No data type requested sync to start and our fallback timer expired. |
| 33 TRIGGER_FALLBACK_TIMER, | 33 TRIGGER_FALLBACK_TIMER, |
| 34 MAX_TRIGGER_VALUE | 34 MAX_TRIGGER_VALUE |
| 35 }; | 35 }; |
| 36 | 36 |
| 37 } // namespace | 37 } // namespace |
| 38 | 38 |
| 39 StartupController::StartupController(const sync_driver::SyncPrefs* sync_prefs, | 39 StartupController::StartupController(const SyncPrefs* sync_prefs, |
| 40 base::Callback<bool()> can_start, | 40 base::Callback<bool()> can_start, |
| 41 base::Closure start_backend) | 41 base::Closure start_backend) |
| 42 : bypass_setup_complete_(false), | 42 : bypass_setup_complete_(false), |
| 43 received_start_request_(false), | 43 received_start_request_(false), |
| 44 setup_in_progress_(false), | 44 setup_in_progress_(false), |
| 45 sync_prefs_(sync_prefs), | 45 sync_prefs_(sync_prefs), |
| 46 can_start_(can_start), | 46 can_start_(can_start), |
| 47 start_backend_(start_backend), | 47 start_backend_(start_backend), |
| 48 fallback_timeout_( | 48 fallback_timeout_( |
| 49 base::TimeDelta::FromSeconds(kDeferredInitFallbackSeconds)), | 49 base::TimeDelta::FromSeconds(kDeferredInitFallbackSeconds)), |
| 50 weak_factory_(this) { | 50 weak_factory_(this) { |
| 51 if (base::CommandLine::ForCurrentProcess()->HasSwitch( | 51 if (base::CommandLine::ForCurrentProcess()->HasSwitch( |
| 52 switches::kSyncDeferredStartupTimeoutSeconds)) { | 52 switches::kSyncDeferredStartupTimeoutSeconds)) { |
| 53 int timeout = kDeferredInitFallbackSeconds; | 53 int timeout = kDeferredInitFallbackSeconds; |
| 54 if (base::StringToInt( | 54 if (base::StringToInt( |
| 55 base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( | 55 base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( |
| 56 switches::kSyncDeferredStartupTimeoutSeconds), | 56 switches::kSyncDeferredStartupTimeoutSeconds), |
| 57 &timeout)) { | 57 &timeout)) { |
| 58 DCHECK_GE(timeout, 0); | 58 DCHECK_GE(timeout, 0); |
| 59 DVLOG(2) << "Sync StartupController overriding startup timeout to " | 59 DVLOG(2) << "Sync StartupController overriding startup timeout to " |
| 60 << timeout << " seconds."; | 60 << timeout << " seconds."; |
| 61 fallback_timeout_ = base::TimeDelta::FromSeconds(timeout); | 61 fallback_timeout_ = base::TimeDelta::FromSeconds(timeout); |
| 62 } | 62 } |
| 63 } | 63 } |
| 64 } | 64 } |
| 65 | 65 |
| 66 StartupController::~StartupController() {} | 66 StartupController::~StartupController() {} |
| 67 | 67 |
| 68 void StartupController::Reset(const syncer::ModelTypeSet registered_types) { | 68 void StartupController::Reset(const ModelTypeSet registered_types) { |
| 69 received_start_request_ = false; | 69 received_start_request_ = false; |
| 70 bypass_setup_complete_ = false; | 70 bypass_setup_complete_ = false; |
| 71 start_up_time_ = base::Time(); | 71 start_up_time_ = base::Time(); |
| 72 start_backend_time_ = base::Time(); | 72 start_backend_time_ = base::Time(); |
| 73 // Don't let previous timers affect us post-reset. | 73 // Don't let previous timers affect us post-reset. |
| 74 weak_factory_.InvalidateWeakPtrs(); | 74 weak_factory_.InvalidateWeakPtrs(); |
| 75 registered_types_ = registered_types; | 75 registered_types_ = registered_types; |
| 76 } | 76 } |
| 77 | 77 |
| 78 void StartupController::SetSetupInProgress(bool setup_in_progress) { | 78 void StartupController::SetSetupInProgress(bool setup_in_progress) { |
| 79 setup_in_progress_ = setup_in_progress; | 79 setup_in_progress_ = setup_in_progress; |
| 80 if (setup_in_progress_) { | 80 if (setup_in_progress_) { |
| 81 TryStart(); | 81 TryStart(); |
| 82 } | 82 } |
| 83 } | 83 } |
| 84 | 84 |
| 85 bool StartupController::StartUp(StartUpDeferredOption deferred_option) { | 85 bool StartupController::StartUp(StartUpDeferredOption deferred_option) { |
| 86 const bool first_start = start_up_time_.is_null(); | 86 const bool first_start = start_up_time_.is_null(); |
| 87 if (first_start) | 87 if (first_start) |
| 88 start_up_time_ = base::Time::Now(); | 88 start_up_time_ = base::Time::Now(); |
| 89 | 89 |
| 90 if (deferred_option == STARTUP_BACKEND_DEFERRED && | 90 if (deferred_option == STARTUP_BACKEND_DEFERRED && |
| 91 !base::CommandLine::ForCurrentProcess()->HasSwitch( | 91 !base::CommandLine::ForCurrentProcess()->HasSwitch( |
| 92 switches::kSyncDisableDeferredStartup) && | 92 switches::kSyncDisableDeferredStartup) && |
| 93 sync_prefs_->GetPreferredDataTypes(registered_types_) | 93 sync_prefs_->GetPreferredDataTypes(registered_types_).Has(SESSIONS)) { |
| 94 .Has(syncer::SESSIONS)) { | |
| 95 if (first_start) { | 94 if (first_start) { |
| 96 base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( | 95 base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| 97 FROM_HERE, | 96 FROM_HERE, |
| 98 base::Bind(&StartupController::OnFallbackStartupTimerExpired, | 97 base::Bind(&StartupController::OnFallbackStartupTimerExpired, |
| 99 weak_factory_.GetWeakPtr()), | 98 weak_factory_.GetWeakPtr()), |
| 100 fallback_timeout_); | 99 fallback_timeout_); |
| 101 } | 100 } |
| 102 return false; | 101 return false; |
| 103 } | 102 } |
| 104 | 103 |
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| 167 | 166 |
| 168 std::string StartupController::GetBackendInitializationStateString() const { | 167 std::string StartupController::GetBackendInitializationStateString() const { |
| 169 if (!start_backend_time_.is_null()) | 168 if (!start_backend_time_.is_null()) |
| 170 return "Started"; | 169 return "Started"; |
| 171 else if (!start_up_time_.is_null()) | 170 else if (!start_up_time_.is_null()) |
| 172 return "Deferred"; | 171 return "Deferred"; |
| 173 else | 172 else |
| 174 return "Not started"; | 173 return "Not started"; |
| 175 } | 174 } |
| 176 | 175 |
| 177 void StartupController::OnDataTypeRequestsSyncStartup(syncer::ModelType type) { | 176 void StartupController::OnDataTypeRequestsSyncStartup(ModelType type) { |
| 178 if (base::CommandLine::ForCurrentProcess()->HasSwitch( | 177 if (base::CommandLine::ForCurrentProcess()->HasSwitch( |
| 179 switches::kSyncDisableDeferredStartup)) { | 178 switches::kSyncDisableDeferredStartup)) { |
| 180 DVLOG(2) << "Ignoring data type request for sync startup: " | 179 DVLOG(2) << "Ignoring data type request for sync startup: " |
| 181 << syncer::ModelTypeToString(type); | 180 << ModelTypeToString(type); |
| 182 return; | 181 return; |
| 183 } | 182 } |
| 184 | 183 |
| 185 if (!start_backend_time_.is_null()) | 184 if (!start_backend_time_.is_null()) |
| 186 return; | 185 return; |
| 187 | 186 |
| 188 DVLOG(2) << "Data type requesting sync startup: " | 187 DVLOG(2) << "Data type requesting sync startup: " << ModelTypeToString(type); |
| 189 << syncer::ModelTypeToString(type); | |
| 190 // Measure the time spent waiting for init and the type that triggered it. | 188 // Measure the time spent waiting for init and the type that triggered it. |
| 191 // We could measure the time spent deferred on a per-datatype basis, but | 189 // We could measure the time spent deferred on a per-datatype basis, but |
| 192 // for now this is probably sufficient. | 190 // for now this is probably sufficient. |
| 193 UMA_HISTOGRAM_ENUMERATION("Sync.Startup.TypeTriggeringInit", | 191 UMA_HISTOGRAM_ENUMERATION("Sync.Startup.TypeTriggeringInit", |
| 194 ModelTypeToHistogramInt(type), | 192 ModelTypeToHistogramInt(type), MODEL_TYPE_COUNT); |
| 195 syncer::MODEL_TYPE_COUNT); | |
| 196 if (!start_up_time_.is_null()) { | 193 if (!start_up_time_.is_null()) { |
| 197 RecordTimeDeferred(); | 194 RecordTimeDeferred(); |
| 198 UMA_HISTOGRAM_ENUMERATION("Sync.Startup.DeferredInitTrigger", | 195 UMA_HISTOGRAM_ENUMERATION("Sync.Startup.DeferredInitTrigger", |
| 199 TRIGGER_DATA_TYPE_REQUEST, MAX_TRIGGER_VALUE); | 196 TRIGGER_DATA_TYPE_REQUEST, MAX_TRIGGER_VALUE); |
| 200 } | 197 } |
| 201 received_start_request_ = true; | 198 received_start_request_ = true; |
| 202 TryStart(); | 199 TryStart(); |
| 203 } | 200 } |
| 204 | 201 |
| 205 } // namespace browser_sync | 202 } // namespace syncer |
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