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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
|
robertshield
2012/03/14 13:51:48
2012
MAD
2012/03/15 22:37:36
Done.
| |
| 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 "chrome/browser/metrics/field_trial_synchronizer.h" | 5 #include "chrome/browser/metrics/field_trial_synchronizer.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/logging.h" | 8 #include "base/logging.h" |
| 9 #include "base/threading/thread.h" | 9 #include "base/threading/thread.h" |
| 10 #include "chrome/common/child_process_logging.h" | |
| 10 #include "chrome/common/chrome_constants.h" | 11 #include "chrome/common/chrome_constants.h" |
| 11 #include "chrome/common/render_messages.h" | 12 #include "chrome/common/render_messages.h" |
| 12 #include "content/public/browser/browser_thread.h" | 13 #include "content/public/browser/browser_thread.h" |
| 13 #include "content/public/browser/render_process_host.h" | 14 #include "content/public/browser/render_process_host.h" |
| 14 | 15 |
| 15 using content::BrowserThread; | 16 using content::BrowserThread; |
| 16 | 17 |
| 17 FieldTrialSynchronizer::FieldTrialSynchronizer() { | 18 FieldTrialSynchronizer::FieldTrialSynchronizer() { |
| 18 DCHECK(field_trial_synchronizer_ == NULL); | 19 DCHECK(field_trial_synchronizer_ == NULL); |
| 19 field_trial_synchronizer_ = this; | 20 field_trial_synchronizer_ = this; |
| 20 base::FieldTrialList::AddObserver(this); | 21 base::FieldTrialList::AddObserver(this); |
| 21 } | 22 } |
| 22 | 23 |
| 23 FieldTrialSynchronizer::~FieldTrialSynchronizer() { | 24 FieldTrialSynchronizer::~FieldTrialSynchronizer() { |
| 24 base::FieldTrialList::RemoveObserver(this); | 25 base::FieldTrialList::RemoveObserver(this); |
| 25 field_trial_synchronizer_ = NULL; | 26 field_trial_synchronizer_ = NULL; |
| 26 } | 27 } |
| 27 | 28 |
| 29 void FieldTrialSynchronizer::Init() { | |
| 30 child_process_logging::InitExperimentList(); | |
| 31 } | |
| 32 | |
| 28 void FieldTrialSynchronizer::NotifyAllRenderers( | 33 void FieldTrialSynchronizer::NotifyAllRenderers( |
| 29 const std::string& field_trial_name, | 34 const std::string& field_trial_name, |
| 30 const std::string& group_name) { | 35 const std::string& group_name) { |
| 31 // To iterate over RenderProcessHosts, or to send messages to the hosts, we | 36 // To iterate over RenderProcessHosts, or to send messages to the hosts, we |
| 32 // need to be on the UI thread. | 37 // need to be on the UI thread. |
| 33 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | 38 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| 34 | 39 |
| 35 for (content::RenderProcessHost::iterator it( | 40 for (content::RenderProcessHost::iterator it( |
| 36 content::RenderProcessHost::AllHostsIterator()); | 41 content::RenderProcessHost::AllHostsIterator()); |
| 37 !it.IsAtEnd(); it.Advance()) { | 42 !it.IsAtEnd(); it.Advance()) { |
| 38 it.GetCurrentValue()->Send( | 43 it.GetCurrentValue()->Send( |
| 39 new ChromeViewMsg_SetFieldTrialGroup(field_trial_name, group_name)); | 44 new ChromeViewMsg_SetFieldTrialGroup(field_trial_name, group_name)); |
| 40 } | 45 } |
| 41 } | 46 } |
| 42 | 47 |
| 43 void FieldTrialSynchronizer::OnFieldTrialGroupFinalized( | 48 void FieldTrialSynchronizer::OnFieldTrialGroupFinalized( |
| 44 const std::string& field_trial_name, | 49 const std::string& field_trial_name, |
| 45 const std::string& group_name) { | 50 const std::string& group_name) { |
| 46 BrowserThread::PostTask( | 51 BrowserThread::PostTask( |
| 47 BrowserThread::UI, FROM_HERE, | 52 BrowserThread::UI, FROM_HERE, |
| 48 base::Bind(&FieldTrialSynchronizer::NotifyAllRenderers, | 53 base::Bind(&FieldTrialSynchronizer::NotifyAllRenderers, |
| 49 this, | 54 this, |
| 50 field_trial_name, | 55 field_trial_name, |
| 51 group_name)); | 56 group_name)); |
| 57 child_process_logging::AddFieldTrialGroup(field_trial_name, group_name); | |
| 52 } | 58 } |
| 53 | 59 |
| 54 // static | 60 // static |
| 55 FieldTrialSynchronizer* | 61 FieldTrialSynchronizer* |
| 56 FieldTrialSynchronizer::field_trial_synchronizer_ = NULL; | 62 FieldTrialSynchronizer::field_trial_synchronizer_ = NULL; |
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