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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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/net/referrer.h" | 5 #include "chrome/browser/net/referrer.h" |
6 | 6 |
7 #include <limits.h> | 7 #include <limits.h> |
8 | 8 |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "base/values.h" | 10 #include "base/values.h" |
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117 void Referrer::Deserialize(const Value& value) { | 117 void Referrer::Deserialize(const Value& value) { |
118 if (value.GetType() != Value::TYPE_LIST) | 118 if (value.GetType() != Value::TYPE_LIST) |
119 return; | 119 return; |
120 const ListValue* subresource_list(static_cast<const ListValue*>(&value)); | 120 const ListValue* subresource_list(static_cast<const ListValue*>(&value)); |
121 size_t index = 0; // Bounds checking is done by subresource_list->Get*(). | 121 size_t index = 0; // Bounds checking is done by subresource_list->Get*(). |
122 while (true) { | 122 while (true) { |
123 std::string url_spec; | 123 std::string url_spec; |
124 if (!subresource_list->GetString(index++, &url_spec)) | 124 if (!subresource_list->GetString(index++, &url_spec)) |
125 return; | 125 return; |
126 double rate; | 126 double rate; |
127 if (!subresource_list->GetReal(index++, &rate)) | 127 if (!subresource_list->GetDouble(index++, &rate)) |
128 return; | 128 return; |
129 | 129 |
130 GURL url(url_spec); | 130 GURL url(url_spec); |
131 // TODO(jar): We could be more direct, and change birth date or similar to | 131 // TODO(jar): We could be more direct, and change birth date or similar to |
132 // show that this is a resurrected value we're adding in. I'm not yet sure | 132 // show that this is a resurrected value we're adding in. I'm not yet sure |
133 // of how best to optimize the learning and pruning (Trim) algorithm at this | 133 // of how best to optimize the learning and pruning (Trim) algorithm at this |
134 // level, so for now, we just suggest subresources, which leaves them all | 134 // level, so for now, we just suggest subresources, which leaves them all |
135 // with the same birth date (typically start of process). | 135 // with the same birth date (typically start of process). |
136 SuggestHost(url); | 136 SuggestHost(url); |
137 (*this)[url].SetSubresourceUseRate(rate); | 137 (*this)[url].SetSubresourceUseRate(rate); |
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170 | 170 |
171 void ReferrerValue::ReferrerWasObserved() { | 171 void ReferrerValue::ReferrerWasObserved() { |
172 subresource_use_rate_ *= kWeightingForOldExpectedValue; | 172 subresource_use_rate_ *= kWeightingForOldExpectedValue; |
173 // Note: the use rate is temporarilly possibly incorect, as we need to find | 173 // Note: the use rate is temporarilly possibly incorect, as we need to find |
174 // out if we really end up connecting. This will happen in a few hundred | 174 // out if we really end up connecting. This will happen in a few hundred |
175 // milliseconds (when content arrives, etc.). | 175 // milliseconds (when content arrives, etc.). |
176 // Value of subresource_use_rate_ should be sampled before this call. | 176 // Value of subresource_use_rate_ should be sampled before this call. |
177 } | 177 } |
178 | 178 |
179 } // namespace chrome_browser_net | 179 } // namespace chrome_browser_net |
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