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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 #ifndef WEBKIT_BROWSER_QUOTA_QUOTA_TEMPORARY_STORAGE_EVICTOR_H_ | 5 #include "storage/browser/quota/quota_temporary_storage_evictor.h" |
6 #define WEBKIT_BROWSER_QUOTA_QUOTA_TEMPORARY_STORAGE_EVICTOR_H_ | |
7 | |
8 #include <map> | |
9 #include <string> | |
10 | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "base/threading/non_thread_safe.h" | |
13 #include "base/timer/timer.h" | |
14 #include "webkit/browser/storage_browser_export.h" | |
15 #include "webkit/common/quota/quota_types.h" | |
16 | |
17 class GURL; | |
18 | |
19 namespace content { | |
20 class QuotaTemporaryStorageEvictorTest; | |
21 } | |
22 | |
23 namespace storage { | |
24 | |
25 class QuotaEvictionHandler; | |
26 struct UsageAndQuota; | |
27 | |
28 class STORAGE_EXPORT_PRIVATE QuotaTemporaryStorageEvictor | |
29 : public base::NonThreadSafe { | |
30 public: | |
31 struct Statistics { | |
32 Statistics() | |
33 : num_errors_on_evicting_origin(0), | |
34 num_errors_on_getting_usage_and_quota(0), | |
35 num_evicted_origins(0), | |
36 num_eviction_rounds(0), | |
37 num_skipped_eviction_rounds(0) {} | |
38 int64 num_errors_on_evicting_origin; | |
39 int64 num_errors_on_getting_usage_and_quota; | |
40 int64 num_evicted_origins; | |
41 int64 num_eviction_rounds; | |
42 int64 num_skipped_eviction_rounds; | |
43 | |
44 void subtract_assign(const Statistics& rhs) { | |
45 num_errors_on_evicting_origin -= rhs.num_errors_on_evicting_origin; | |
46 num_errors_on_getting_usage_and_quota -= | |
47 rhs.num_errors_on_getting_usage_and_quota; | |
48 num_evicted_origins -= rhs.num_evicted_origins; | |
49 num_eviction_rounds -= rhs.num_eviction_rounds; | |
50 num_skipped_eviction_rounds -= rhs.num_skipped_eviction_rounds; | |
51 } | |
52 }; | |
53 | |
54 struct EvictionRoundStatistics { | |
55 EvictionRoundStatistics(); | |
56 | |
57 bool in_round; | |
58 bool is_initialized; | |
59 | |
60 base::Time start_time; | |
61 int64 usage_overage_at_round; | |
62 int64 diskspace_shortage_at_round; | |
63 | |
64 int64 usage_on_beginning_of_round; | |
65 int64 usage_on_end_of_round; | |
66 int64 num_evicted_origins_in_round; | |
67 }; | |
68 | |
69 QuotaTemporaryStorageEvictor( | |
70 QuotaEvictionHandler* quota_eviction_handler, | |
71 int64 interval_ms); | |
72 virtual ~QuotaTemporaryStorageEvictor(); | |
73 | |
74 void GetStatistics(std::map<std::string, int64>* statistics); | |
75 void ReportPerRoundHistogram(); | |
76 void ReportPerHourHistogram(); | |
77 void Start(); | |
78 | |
79 int64 min_available_disk_space_to_start_eviction() { | |
80 return min_available_disk_space_to_start_eviction_; | |
81 } | |
82 void reset_min_available_disk_space_to_start_eviction() { | |
83 min_available_disk_space_to_start_eviction_ = | |
84 kMinAvailableDiskSpaceToStartEvictionNotSpecified; | |
85 } | |
86 void set_min_available_disk_space_to_start_eviction(int64 value) { | |
87 min_available_disk_space_to_start_eviction_ = value; | |
88 } | |
89 | |
90 private: | |
91 friend class content::QuotaTemporaryStorageEvictorTest; | |
92 | |
93 void StartEvictionTimerWithDelay(int delay_ms); | |
94 void ConsiderEviction(); | |
95 void OnGotUsageAndQuotaForEviction( | |
96 QuotaStatusCode status, | |
97 const UsageAndQuota& quota_and_usage); | |
98 void OnGotLRUOrigin(const GURL& origin); | |
99 void OnEvictionComplete(QuotaStatusCode status); | |
100 | |
101 void OnEvictionRoundStarted(); | |
102 void OnEvictionRoundFinished(); | |
103 | |
104 // This is only used for tests. | |
105 void set_repeated_eviction(bool repeated_eviction) { | |
106 repeated_eviction_ = repeated_eviction; | |
107 } | |
108 | |
109 static const int kMinAvailableDiskSpaceToStartEvictionNotSpecified; | |
110 | |
111 int64 min_available_disk_space_to_start_eviction_; | |
112 | |
113 // Not owned; quota_eviction_handler owns us. | |
114 QuotaEvictionHandler* quota_eviction_handler_; | |
115 | |
116 Statistics statistics_; | |
117 Statistics previous_statistics_; | |
118 EvictionRoundStatistics round_statistics_; | |
119 base::Time time_of_end_of_last_nonskipped_round_; | |
120 base::Time time_of_end_of_last_round_; | |
121 | |
122 int64 interval_ms_; | |
123 bool repeated_eviction_; | |
124 | |
125 base::OneShotTimer<QuotaTemporaryStorageEvictor> eviction_timer_; | |
126 base::RepeatingTimer<QuotaTemporaryStorageEvictor> histogram_timer_; | |
127 base::WeakPtrFactory<QuotaTemporaryStorageEvictor> weak_factory_; | |
128 | |
129 DISALLOW_COPY_AND_ASSIGN(QuotaTemporaryStorageEvictor); | |
130 }; | |
131 | |
132 } // namespace storage | |
133 | |
134 #endif // WEBKIT_BROWSER_QUOTA_QUOTA_TEMPORARY_STORAGE_EVICTOR_H_ | |
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