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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 "webkit/dom_storage/dom_storage_cached_area.h" | 5 #include "webkit/dom_storage/dom_storage_cached_area.h" |
6 | 6 |
7 #include "base/basictypes.h" | 7 #include "base/basictypes.h" |
8 #include "base/time.h" | 8 #include "base/time.h" |
9 #include "base/metrics/histogram.h" | 9 #include "base/metrics/histogram.h" |
10 #include "webkit/dom_storage/dom_storage_map.h" | 10 #include "webkit/dom_storage/dom_storage_map.h" |
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84 // Ignore all mutations until OnClearComplete time. | 84 // Ignore all mutations until OnClearComplete time. |
85 ignore_all_mutations_ = true; | 85 ignore_all_mutations_ = true; |
86 proxy_->ClearArea( | 86 proxy_->ClearArea( |
87 connection_id, page_url, | 87 connection_id, page_url, |
88 base::Bind(&DomStorageCachedArea::OnClearComplete, | 88 base::Bind(&DomStorageCachedArea::OnClearComplete, |
89 weak_factory_.GetWeakPtr())); | 89 weak_factory_.GetWeakPtr())); |
90 } | 90 } |
91 | 91 |
92 void DomStorageCachedArea::ApplyMutation( | 92 void DomStorageCachedArea::ApplyMutation( |
93 const NullableString16& key, const NullableString16& new_value) { | 93 const NullableString16& key, const NullableString16& new_value) { |
94 if (!map_ || ignore_all_mutations_) | 94 if (!map_.get() || ignore_all_mutations_) |
95 return; | 95 return; |
96 | 96 |
97 if (key.is_null()) { | 97 if (key.is_null()) { |
98 // It's a clear event. | 98 // It's a clear event. |
99 scoped_refptr<DomStorageMap> old = map_; | 99 scoped_refptr<DomStorageMap> old = map_; |
100 map_ = new DomStorageMap(dom_storage::kPerAreaQuota); | 100 map_ = new DomStorageMap(dom_storage::kPerAreaQuota); |
101 | 101 |
102 // We have to retain local additions which happened after this | 102 // We have to retain local additions which happened after this |
103 // clear operation from another process. | 103 // clear operation from another process. |
104 std::map<base::string16, int>::iterator iter = | 104 std::map<base::string16, int>::iterator iter = |
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128 // It's a set item event. | 128 // It's a set item event. |
129 // We turn off quota checking here to accomodate the over budget | 129 // We turn off quota checking here to accomodate the over budget |
130 // allowance that's provided in the browser process. | 130 // allowance that's provided in the browser process. |
131 NullableString16 unused; | 131 NullableString16 unused; |
132 map_->set_quota(kint32max); | 132 map_->set_quota(kint32max); |
133 map_->SetItem(key.string(), new_value.string(), &unused); | 133 map_->SetItem(key.string(), new_value.string(), &unused); |
134 map_->set_quota(dom_storage::kPerAreaQuota); | 134 map_->set_quota(dom_storage::kPerAreaQuota); |
135 } | 135 } |
136 | 136 |
137 size_t DomStorageCachedArea::MemoryBytesUsedByCache() const { | 137 size_t DomStorageCachedArea::MemoryBytesUsedByCache() const { |
138 return map_ ? map_->bytes_used() : 0; | 138 return map_.get() ? map_->bytes_used() : 0; |
139 } | 139 } |
140 | 140 |
141 void DomStorageCachedArea::Prime(int connection_id) { | 141 void DomStorageCachedArea::Prime(int connection_id) { |
142 DCHECK(!map_); | 142 DCHECK(!map_.get()); |
143 | 143 |
144 // The LoadArea method is actually synchronous, but we have to | 144 // The LoadArea method is actually synchronous, but we have to |
145 // wait for an asyncly delivered message to know when incoming | 145 // wait for an asyncly delivered message to know when incoming |
146 // mutation events should be applied. Our valuemap is plucked | 146 // mutation events should be applied. Our valuemap is plucked |
147 // from ipc stream out of order, mutations in front if it need | 147 // from ipc stream out of order, mutations in front if it need |
148 // to be ignored. | 148 // to be ignored. |
149 | 149 |
150 // Ignore all mutations until OnLoadComplete time. | 150 // Ignore all mutations until OnLoadComplete time. |
151 ignore_all_mutations_ = true; | 151 ignore_all_mutations_ = true; |
152 ValuesMap values; | 152 ValuesMap values; |
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221 ignore_key_mutations_.erase(found); | 221 ignore_key_mutations_.erase(found); |
222 } | 222 } |
223 | 223 |
224 void DomStorageCachedArea::OnClearComplete(bool success) { | 224 void DomStorageCachedArea::OnClearComplete(bool success) { |
225 DCHECK(success); | 225 DCHECK(success); |
226 DCHECK(ignore_all_mutations_); | 226 DCHECK(ignore_all_mutations_); |
227 ignore_all_mutations_ = false; | 227 ignore_all_mutations_ = false; |
228 } | 228 } |
229 | 229 |
230 } // namespace dom_storage | 230 } // namespace dom_storage |
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