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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "base/metrics/field_trial.h" | 5 #include "base/metrics/field_trial.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "base/build_time.h" | 9 #include "base/build_time.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
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245 | 245 |
246 Time two_years_from_build_time = GetBuildTime() + TimeDelta::FromDays(730); | 246 Time two_years_from_build_time = GetBuildTime() + TimeDelta::FromDays(730); |
247 Time::Exploded exploded; | 247 Time::Exploded exploded; |
248 two_years_from_build_time.LocalExplode(&exploded); | 248 two_years_from_build_time.LocalExplode(&exploded); |
249 kNoExpirationYear = exploded.year; | 249 kNoExpirationYear = exploded.year; |
250 } | 250 } |
251 | 251 |
252 FieldTrialList::~FieldTrialList() { | 252 FieldTrialList::~FieldTrialList() { |
253 AutoLock auto_lock(lock_); | 253 AutoLock auto_lock(lock_); |
254 while (!registered_.empty()) { | 254 while (!registered_.empty()) { |
255 RegistrationList::iterator it = registered_.begin(); | 255 RegistrationMap::iterator it = registered_.begin(); |
256 it->second->Release(); | 256 it->second->Release(); |
257 registered_.erase(it->first); | 257 registered_.erase(it->first); |
258 } | 258 } |
259 DCHECK_EQ(this, global_); | 259 DCHECK_EQ(this, global_); |
260 global_ = NULL; | 260 global_ = NULL; |
261 } | 261 } |
262 | 262 |
263 // static | 263 // static |
264 FieldTrial* FieldTrialList::FactoryGetFieldTrial( | 264 FieldTrial* FieldTrialList::FactoryGetFieldTrial( |
265 const std::string& trial_name, | 265 const std::string& trial_name, |
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383 } | 383 } |
384 | 384 |
385 // static | 385 // static |
386 void FieldTrialList::GetActiveFieldTrialGroups( | 386 void FieldTrialList::GetActiveFieldTrialGroups( |
387 FieldTrial::ActiveGroups* active_groups) { | 387 FieldTrial::ActiveGroups* active_groups) { |
388 DCHECK(active_groups->empty()); | 388 DCHECK(active_groups->empty()); |
389 if (!global_) | 389 if (!global_) |
390 return; | 390 return; |
391 AutoLock auto_lock(global_->lock_); | 391 AutoLock auto_lock(global_->lock_); |
392 | 392 |
393 for (RegistrationList::iterator it = global_->registered_.begin(); | 393 for (RegistrationMap::iterator it = global_->registered_.begin(); |
394 it != global_->registered_.end(); ++it) { | 394 it != global_->registered_.end(); ++it) { |
395 FieldTrial::ActiveGroup active_group; | 395 FieldTrial::ActiveGroup active_group; |
396 if (it->second->GetActiveGroup(&active_group)) | 396 if (it->second->GetActiveGroup(&active_group)) |
397 active_groups->push_back(active_group); | 397 active_groups->push_back(active_group); |
398 } | 398 } |
399 } | 399 } |
400 | 400 |
401 // static | 401 // static |
402 bool FieldTrialList::CreateTrialsFromString(const std::string& trials_string, | 402 bool FieldTrialList::CreateTrialsFromString(const std::string& trials_string, |
403 FieldTrialActivationMode mode) { | 403 FieldTrialActivationMode mode) { |
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506 FieldTrialList::GetEntropyProviderForOneTimeRandomization() { | 506 FieldTrialList::GetEntropyProviderForOneTimeRandomization() { |
507 if (!global_) { | 507 if (!global_) { |
508 used_without_global_ = true; | 508 used_without_global_ = true; |
509 return NULL; | 509 return NULL; |
510 } | 510 } |
511 | 511 |
512 return global_->entropy_provider_.get(); | 512 return global_->entropy_provider_.get(); |
513 } | 513 } |
514 | 514 |
515 FieldTrial* FieldTrialList::PreLockedFind(const std::string& name) { | 515 FieldTrial* FieldTrialList::PreLockedFind(const std::string& name) { |
516 RegistrationList::iterator it = registered_.find(name); | 516 RegistrationMap::iterator it = registered_.find(name); |
517 if (registered_.end() == it) | 517 if (registered_.end() == it) |
518 return NULL; | 518 return NULL; |
519 return it->second; | 519 return it->second; |
520 } | 520 } |
521 | 521 |
522 // static | 522 // static |
523 void FieldTrialList::Register(FieldTrial* trial) { | 523 void FieldTrialList::Register(FieldTrial* trial) { |
524 if (!global_) { | 524 if (!global_) { |
525 used_without_global_ = true; | 525 used_without_global_ = true; |
526 return; | 526 return; |
527 } | 527 } |
528 AutoLock auto_lock(global_->lock_); | 528 AutoLock auto_lock(global_->lock_); |
529 DCHECK(!global_->PreLockedFind(trial->trial_name())); | 529 DCHECK(!global_->PreLockedFind(trial->trial_name())); |
530 trial->AddRef(); | 530 trial->AddRef(); |
531 trial->SetTrialRegistered(); | 531 trial->SetTrialRegistered(); |
532 global_->registered_[trial->trial_name()] = trial; | 532 global_->registered_[trial->trial_name()] = trial; |
533 } | 533 } |
534 | 534 |
535 } // namespace base | 535 } // namespace base |
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