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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "storage/browser/blob/internal_blob_data.h" | |
6 | |
7 #include <stddef.h> | |
8 | |
9 #include <memory> | |
10 #include <utility> | |
11 | |
12 #include "base/containers/hash_tables.h" | |
13 #include "base/metrics/histogram.h" | |
14 #include "storage/browser/blob/blob_data_item.h" | |
15 #include "storage/common/data_element.h" | |
16 | |
17 namespace storage { | |
18 | |
19 InternalBlobData::Builder::Builder() : data_(new InternalBlobData()) { | |
20 } | |
21 InternalBlobData::Builder::~Builder() { | |
22 } | |
23 | |
24 void InternalBlobData::Builder::AppendSharedBlobItem( | |
25 scoped_refptr<ShareableBlobDataItem> item) { | |
26 DCHECK(item); | |
27 DCHECK(data_); | |
28 data_->items_.push_back(item); | |
29 } | |
30 | |
31 void InternalBlobData::Builder::RemoveBlobFromShareableItems( | |
32 const std::string& blob_uuid) { | |
33 DCHECK(data_); | |
34 data_->RemoveBlobFromShareableItems(blob_uuid); | |
35 } | |
36 | |
37 size_t InternalBlobData::Builder::GetNonsharedMemoryUsage() const { | |
38 DCHECK(data_); | |
39 return data_->GetUnsharedMemoryUsage(); | |
40 } | |
41 | |
42 std::unique_ptr<InternalBlobData> InternalBlobData::Builder::Build() { | |
43 DCHECK(data_); | |
44 return std::move(data_); | |
45 } | |
46 | |
47 InternalBlobData::InternalBlobData() { | |
48 } | |
49 | |
50 InternalBlobData::~InternalBlobData() { | |
51 } | |
52 | |
53 const std::vector<scoped_refptr<ShareableBlobDataItem>>& | |
54 InternalBlobData::items() const { | |
55 return items_; | |
56 } | |
57 | |
58 void InternalBlobData::RemoveBlobFromShareableItems( | |
59 const std::string& blob_uuid) { | |
60 for (auto& data_item : items_) { | |
61 data_item->referencing_blobs_mutable()->erase(blob_uuid); | |
62 } | |
63 } | |
64 | |
65 size_t InternalBlobData::GetUnsharedMemoryUsage() const { | |
66 size_t memory = 0; | |
67 base::hash_set<void*> seen_items; | |
68 for (const auto& data_item : items_) { | |
69 if (data_item->item()->type() != DataElement::TYPE_BYTES || | |
70 data_item->referencing_blobs().size() > 1 || | |
71 seen_items.find(data_item.get()) != seen_items.end()) { | |
72 continue; | |
73 } | |
74 memory += data_item->item()->length(); | |
75 seen_items.insert(data_item.get()); | |
76 } | |
77 return memory; | |
78 } | |
79 | |
80 void InternalBlobData::GetMemoryUsage(size_t* total_memory, | |
81 size_t* unshared_memory) { | |
82 *total_memory = 0; | |
83 *unshared_memory = 0; | |
84 base::hash_set<void*> seen_items; | |
85 for (const auto& data_item : items_) { | |
86 if (data_item->item()->type() == DataElement::TYPE_BYTES) { | |
87 *total_memory += data_item->item()->length(); | |
88 if (data_item->referencing_blobs().size() == 1 && | |
89 seen_items.find(data_item.get()) == seen_items.end()) { | |
90 *unshared_memory += data_item->item()->length(); | |
91 seen_items.insert(data_item.get()); | |
92 } | |
93 } | |
94 } | |
95 } | |
96 | |
97 } // namespace storage | |
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