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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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347 | 347 |
348 FieldTrial* field_trial = new FieldTrial(trial_name, total_probability, | 348 FieldTrial* field_trial = new FieldTrial(trial_name, total_probability, |
349 default_group_name, entropy_value); | 349 default_group_name, entropy_value); |
350 if (GetBuildTime() > CreateTimeFromParams(year, month, day_of_month)) | 350 if (GetBuildTime() > CreateTimeFromParams(year, month, day_of_month)) |
351 field_trial->Disable(); | 351 field_trial->Disable(); |
352 FieldTrialList::Register(field_trial); | 352 FieldTrialList::Register(field_trial); |
353 return field_trial; | 353 return field_trial; |
354 } | 354 } |
355 | 355 |
356 // static | 356 // static |
357 FieldTrial* FieldTrialList::Find(const std::string& name) { | 357 FieldTrial* FieldTrialList::Find(const std::string& trial_name) { |
358 if (!global_) | 358 if (!global_) |
359 return NULL; | 359 return NULL; |
360 AutoLock auto_lock(global_->lock_); | 360 AutoLock auto_lock(global_->lock_); |
361 return global_->PreLockedFind(name); | 361 return global_->PreLockedFind(trial_name); |
362 } | 362 } |
363 | 363 |
364 // static | 364 // static |
365 int FieldTrialList::FindValue(const std::string& name) { | 365 int FieldTrialList::FindValue(const std::string& trial_name) { |
366 FieldTrial* field_trial = Find(name); | 366 FieldTrial* field_trial = Find(trial_name); |
367 if (field_trial) | 367 if (field_trial) |
368 return field_trial->group(); | 368 return field_trial->group(); |
369 return FieldTrial::kNotFinalized; | 369 return FieldTrial::kNotFinalized; |
370 } | 370 } |
371 | 371 |
372 // static | 372 // static |
373 std::string FieldTrialList::FindFullName(const std::string& name) { | 373 std::string FieldTrialList::FindFullName(const std::string& trial_name) { |
374 FieldTrial* field_trial = Find(name); | 374 FieldTrial* field_trial = Find(trial_name); |
375 if (field_trial) | 375 if (field_trial) |
376 return field_trial->group_name(); | 376 return field_trial->group_name(); |
377 return std::string(); | 377 return std::string(); |
378 } | 378 } |
379 | 379 |
380 // static | 380 // static |
381 bool FieldTrialList::TrialExists(const std::string& name) { | 381 bool FieldTrialList::TrialExists(const std::string& trial_name) { |
382 return Find(name) != NULL; | 382 return Find(trial_name) != NULL; |
383 } | 383 } |
384 | 384 |
385 // static | 385 // static |
| 386 bool FieldTrialList::IsTrialActive(const std::string& trial_name) { |
| 387 FieldTrial* field_trial = Find(trial_name); |
| 388 FieldTrial::ActiveGroup active_group; |
| 389 return field_trial && field_trial->GetActiveGroup(&active_group); |
| 390 } |
| 391 |
| 392 // static |
386 void FieldTrialList::StatesToString(std::string* output) { | 393 void FieldTrialList::StatesToString(std::string* output) { |
387 FieldTrial::ActiveGroups active_groups; | 394 FieldTrial::ActiveGroups active_groups; |
388 GetActiveFieldTrialGroups(&active_groups); | 395 GetActiveFieldTrialGroups(&active_groups); |
389 for (FieldTrial::ActiveGroups::const_iterator it = active_groups.begin(); | 396 for (FieldTrial::ActiveGroups::const_iterator it = active_groups.begin(); |
390 it != active_groups.end(); ++it) { | 397 it != active_groups.end(); ++it) { |
391 DCHECK_EQ(std::string::npos, | 398 DCHECK_EQ(std::string::npos, |
392 it->trial_name.find(kPersistentStringSeparator)); | 399 it->trial_name.find(kPersistentStringSeparator)); |
393 DCHECK_EQ(std::string::npos, | 400 DCHECK_EQ(std::string::npos, |
394 it->group_name.find(kPersistentStringSeparator)); | 401 it->group_name.find(kPersistentStringSeparator)); |
395 output->append(it->trial_name); | 402 output->append(it->trial_name); |
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583 return; | 590 return; |
584 } | 591 } |
585 AutoLock auto_lock(global_->lock_); | 592 AutoLock auto_lock(global_->lock_); |
586 DCHECK(!global_->PreLockedFind(trial->trial_name())); | 593 DCHECK(!global_->PreLockedFind(trial->trial_name())); |
587 trial->AddRef(); | 594 trial->AddRef(); |
588 trial->SetTrialRegistered(); | 595 trial->SetTrialRegistered(); |
589 global_->registered_[trial->trial_name()] = trial; | 596 global_->registered_[trial->trial_name()] = trial; |
590 } | 597 } |
591 | 598 |
592 } // namespace base | 599 } // namespace base |
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