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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 "chrome/browser/metrics/histogram_synchronizer.h" | 5 #include "chrome/browser/metrics/histogram_synchronizer.h" |
| 6 | 6 |
| 7 #include "base/bind.h" |
| 7 #include "base/logging.h" | 8 #include "base/logging.h" |
| 8 #include "base/metrics/histogram.h" | 9 #include "base/metrics/histogram.h" |
| 9 #include "base/threading/thread.h" | 10 #include "base/threading/thread.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 base::Time; | 16 using base::Time; |
| 16 using base::TimeDelta; | 17 using base::TimeDelta; |
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| 94 callback_task); | 95 callback_task); |
| 95 | 96 |
| 96 int sequence_number = | 97 int sequence_number = |
| 97 current_synchronizer->NotifyAllRenderers(ASYNC_HISTOGRAMS); | 98 current_synchronizer->NotifyAllRenderers(ASYNC_HISTOGRAMS); |
| 98 | 99 |
| 99 // Post a task that would be called after waiting for wait_time. This acts | 100 // Post a task that would be called after waiting for wait_time. This acts |
| 100 // as a watchdog, to ensure that a non-responsive renderer won't block us from | 101 // as a watchdog, to ensure that a non-responsive renderer won't block us from |
| 101 // making the callback. | 102 // making the callback. |
| 102 BrowserThread::PostDelayedTask( | 103 BrowserThread::PostDelayedTask( |
| 103 BrowserThread::UI, FROM_HERE, | 104 BrowserThread::UI, FROM_HERE, |
| 104 NewRunnableMethod( | 105 base::Bind( |
| 106 &HistogramSynchronizer::ForceHistogramSynchronizationDoneCallback, |
| 105 current_synchronizer, | 107 current_synchronizer, |
| 106 &HistogramSynchronizer::ForceHistogramSynchronizationDoneCallback, | |
| 107 sequence_number), | 108 sequence_number), |
| 108 wait_time); | 109 wait_time); |
| 109 } | 110 } |
| 110 | 111 |
| 111 // static | 112 // static |
| 112 void HistogramSynchronizer::DeserializeHistogramList( | 113 void HistogramSynchronizer::DeserializeHistogramList( |
| 113 int sequence_number, | 114 int sequence_number, |
| 114 const std::vector<std::string>& histograms) { | 115 const std::vector<std::string>& histograms) { |
| 115 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | 116 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| 116 for (std::vector<std::string>::const_iterator it = histograms.begin(); | 117 for (std::vector<std::string>::const_iterator it = histograms.begin(); |
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| 252 async_renderers_pending_ = renderer_count; | 253 async_renderers_pending_ = renderer_count; |
| 253 } else if (requester == SYNCHRONOUS_HISTOGRAMS) { | 254 } else if (requester == SYNCHRONOUS_HISTOGRAMS) { |
| 254 synchronous_sequence_number_ = last_used_sequence_number_; | 255 synchronous_sequence_number_ = last_used_sequence_number_; |
| 255 synchronous_renderers_pending_ = renderer_count; | 256 synchronous_renderers_pending_ = renderer_count; |
| 256 } | 257 } |
| 257 return last_used_sequence_number_; | 258 return last_used_sequence_number_; |
| 258 } | 259 } |
| 259 | 260 |
| 260 // static | 261 // static |
| 261 HistogramSynchronizer* HistogramSynchronizer::histogram_synchronizer_ = NULL; | 262 HistogramSynchronizer* HistogramSynchronizer::histogram_synchronizer_ = NULL; |
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