The Tor Browser / annotate

netwerk/base/src/Seer.h@6474c204b198 (annotated)

netwerk/base/src/Seer.h

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /* vim: set ts=2 sts=2 et sw=2: */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef mozilla_net_Seer_h
michael@0 7 #define mozilla_net_Seer_h
michael@0 8
michael@0 9 #include "nsINetworkSeer.h"
michael@0 10
michael@0 11 #include "nsCOMPtr.h"
michael@0 12 #include "nsIDNSListener.h"
michael@0 13 #include "nsIInterfaceRequestor.h"
michael@0 14 #include "nsIObserver.h"
michael@0 15 #include "nsISpeculativeConnect.h"
michael@0 16 #include "nsProxyRelease.h"
michael@0 17
michael@0 18 #include "mozilla/Mutex.h"
michael@0 19 #include "mozilla/storage/StatementCache.h"
michael@0 20 #include "mozilla/TimeStamp.h"
michael@0 21
michael@0 22 class nsIDNSService;
michael@0 23 class nsINetworkSeerVerifier;
michael@0 24 class nsIThread;
michael@0 25 class nsITimer;
michael@0 26
michael@0 27 class mozIStorageConnection;
michael@0 28 class mozIStorageService;
michael@0 29 class mozIStorageStatement;
michael@0 30
michael@0 31 namespace mozilla {
michael@0 32 namespace net {
michael@0 33
michael@0 34 typedef nsMainThreadPtrHandle<nsINetworkSeerVerifier> SeerVerifierHandle;
michael@0 35
michael@0 36 class SeerPredictionRunner;
michael@0 37 struct SeerTelemetryAccumulators;
michael@0 38 class SeerDNSListener;
michael@0 39
michael@0 40 class Seer : public nsINetworkSeer
michael@0 41 , public nsIObserver
michael@0 42 , public nsISpeculativeConnectionOverrider
michael@0 43 , public nsIInterfaceRequestor
michael@0 44 {
michael@0 45 public:
michael@0 46 NS_DECL_ISUPPORTS
michael@0 47 NS_DECL_NSINETWORKSEER
michael@0 48 NS_DECL_NSIOBSERVER
michael@0 49 NS_DECL_NSISPECULATIVECONNECTIONOVERRIDER
michael@0 50 NS_DECL_NSIINTERFACEREQUESTOR
michael@0 51
michael@0 52 Seer();
michael@0 53 virtual ~Seer();
michael@0 54
michael@0 55 nsresult Init();
michael@0 56 void Shutdown();
michael@0 57 static nsresult Create(nsISupports *outer, const nsIID& iid, void **result);
michael@0 58
michael@0 59 private:
michael@0 60 friend class SeerPredictionEvent;
michael@0 61 friend class SeerLearnEvent;
michael@0 62 friend class SeerResetEvent;
michael@0 63 friend class SeerPredictionRunner;
michael@0 64 friend class SeerDBShutdownRunner;
michael@0 65 friend class SeerCommitTimerInitEvent;
michael@0 66 friend class SeerNewTransactionEvent;
michael@0 67 friend class SeerCleanupEvent;
michael@0 68
michael@0 69 void CheckForAndDeleteOldDBFile();
michael@0 70 nsresult EnsureInitStorage();
michael@0 71
michael@0 72 // This is a proxy for the information we need from an nsIURI
michael@0 73 struct UriInfo {
michael@0 74 nsAutoCString spec;
michael@0 75 nsAutoCString origin;
michael@0 76 };
michael@0 77
michael@0 78 void PredictForLink(nsIURI *targetURI,
michael@0 79 nsIURI *sourceURI,
michael@0 80 nsINetworkSeerVerifier *verifier);
michael@0 81 void PredictForPageload(const UriInfo &dest,
michael@0 82 SeerVerifierHandle &verifier,
michael@0 83 int stackCount,
michael@0 84 TimeStamp &predictStartTime);
michael@0 85 void PredictForStartup(SeerVerifierHandle &verifier,
michael@0 86 TimeStamp &predictStartTime);
michael@0 87
michael@0 88 // Whether we're working on a page or an origin
michael@0 89 enum QueryType {
michael@0 90 QUERY_PAGE = 0,
michael@0 91 QUERY_ORIGIN
michael@0 92 };
michael@0 93
michael@0 94 // Holds info from the db about a top-level page or origin
michael@0 95 struct TopLevelInfo {
michael@0 96 int32_t id;
michael@0 97 int32_t loadCount;
michael@0 98 PRTime lastLoad;
michael@0 99 };
michael@0 100
michael@0 101 // Holds info from the db about a subresource
michael@0 102 struct SubresourceInfo {
michael@0 103 int32_t id;
michael@0 104 int32_t hitCount;
michael@0 105 PRTime lastHit;
michael@0 106 };
michael@0 107
michael@0 108 nsresult ReserveSpaceInQueue();
michael@0 109 void FreeSpaceInQueue();
michael@0 110
michael@0 111 int CalculateGlobalDegradation(PRTime now,
michael@0 112 PRTime lastLoad);
michael@0 113 int CalculateConfidence(int baseConfidence,
michael@0 114 PRTime lastHit,
michael@0 115 PRTime lastPossible,
michael@0 116 int globalDegradation);
michael@0 117 void SetupPrediction(int confidence,
michael@0 118 const nsACString &uri,
michael@0 119 SeerPredictionRunner *runner);
michael@0 120
michael@0 121 bool LookupTopLevel(QueryType queryType,
michael@0 122 const nsACString &key,
michael@0 123 TopLevelInfo &info);
michael@0 124 void AddTopLevel(QueryType queryType,
michael@0 125 const nsACString &key,
michael@0 126 PRTime now);
michael@0 127 void UpdateTopLevel(QueryType queryType,
michael@0 128 const TopLevelInfo &info,
michael@0 129 PRTime now);
michael@0 130 bool TryPredict(QueryType queryType,
michael@0 131 const TopLevelInfo &info,
michael@0 132 PRTime now,
michael@0 133 SeerVerifierHandle &verifier,
michael@0 134 TimeStamp &predictStartTime);
michael@0 135 bool WouldRedirect(const TopLevelInfo &info,
michael@0 136 PRTime now,
michael@0 137 UriInfo &newUri);
michael@0 138
michael@0 139 bool LookupSubresource(QueryType queryType,
michael@0 140 const int32_t parentId,
michael@0 141 const nsACString &key,
michael@0 142 SubresourceInfo &info);
michael@0 143 void AddSubresource(QueryType queryType,
michael@0 144 const int32_t parentId,
michael@0 145 const nsACString &key, PRTime now);
michael@0 146 void UpdateSubresource(QueryType queryType,
michael@0 147 const SubresourceInfo &info,
michael@0 148 PRTime now);
michael@0 149
michael@0 150 void MaybeLearnForStartup(const UriInfo &uri, const PRTime now);
michael@0 151
michael@0 152 void LearnForToplevel(const UriInfo &uri);
michael@0 153 void LearnForSubresource(const UriInfo &targetURI, const UriInfo &sourceURI);
michael@0 154 void LearnForRedirect(const UriInfo &targetURI, const UriInfo &sourceURI);
michael@0 155 void LearnForStartup(const UriInfo &uri);
michael@0 156
michael@0 157 void ResetInternal();
michael@0 158
michael@0 159 void BeginTransaction()
michael@0 160 {
michael@0 161 mDB->BeginTransaction();
michael@0 162 }
michael@0 163
michael@0 164 void CommitTransaction()
michael@0 165 {
michael@0 166 mDB->CommitTransaction();
michael@0 167 }
michael@0 168
michael@0 169 int64_t GetDBFileSize();
michael@0 170 int64_t GetDBFileSizeAfterVacuum();
michael@0 171 void MaybeScheduleCleanup();
michael@0 172 void Cleanup();
michael@0 173 void CleanupOrigins(PRTime now);
michael@0 174 void CleanupStartupPages(PRTime now);
michael@0 175 int32_t GetSubresourceCount();
michael@0 176
michael@0 177 void VacuumDatabase();
michael@0 178
michael@0 179 // Observer-related stuff
michael@0 180 nsresult InstallObserver();
michael@0 181 void RemoveObserver();
michael@0 182
michael@0 183 bool mInitialized;
michael@0 184
michael@0 185 bool mEnabled;
michael@0 186 bool mEnableHoverOnSSL;
michael@0 187
michael@0 188 int mPageDegradationDay;
michael@0 189 int mPageDegradationWeek;
michael@0 190 int mPageDegradationMonth;
michael@0 191 int mPageDegradationYear;
michael@0 192 int mPageDegradationMax;
michael@0 193
michael@0 194 int mSubresourceDegradationDay;
michael@0 195 int mSubresourceDegradationWeek;
michael@0 196 int mSubresourceDegradationMonth;
michael@0 197 int mSubresourceDegradationYear;
michael@0 198 int mSubresourceDegradationMax;
michael@0 199
michael@0 200 int mPreconnectMinConfidence;
michael@0 201 int mPreresolveMinConfidence;
michael@0 202 int mRedirectLikelyConfidence;
michael@0 203
michael@0 204 int32_t mMaxQueueSize;
michael@0 205
michael@0 206 nsCOMPtr<nsIThread> mIOThread;
michael@0 207
michael@0 208 nsCOMPtr<nsISpeculativeConnect> mSpeculativeService;
michael@0 209
michael@0 210 nsCOMPtr<nsIFile> mDBFile;
michael@0 211 nsCOMPtr<mozIStorageService> mStorageService;
michael@0 212 nsCOMPtr<mozIStorageConnection> mDB;
michael@0 213 mozilla::storage::StatementCache<mozIStorageStatement> mStatements;
michael@0 214
michael@0 215 PRTime mStartupTime;
michael@0 216 PRTime mLastStartupTime;
michael@0 217 int32_t mStartupCount;
michael@0 218
michael@0 219 nsCOMPtr<nsIDNSService> mDnsService;
michael@0 220
michael@0 221 int32_t mQueueSize;
michael@0 222 mozilla::Mutex mQueueSizeLock;
michael@0 223
michael@0 224 nsAutoPtr<SeerTelemetryAccumulators> mAccumulators;
michael@0 225
michael@0 226 nsRefPtr<SeerDNSListener> mDNSListener;
michael@0 227
michael@0 228 nsCOMPtr<nsITimer> mCommitTimer;
michael@0 229
michael@0 230 #ifdef SEER_TESTS
michael@0 231 friend class SeerPrepareForDnsTestEvent;
michael@0 232 void PrepareForDnsTestInternal(int64_t timestamp, const nsACString &uri);
michael@0 233 #endif
michael@0 234
michael@0 235 bool mCleanupScheduled;
michael@0 236 int32_t mMaxDBSize;
michael@0 237 int32_t mPreservePercentage;
michael@0 238 PRTime mLastCleanupTime;
michael@0 239 };
michael@0 240
michael@0 241 } // ::mozilla::net
michael@0 242 } // ::mozilla
michael@0 243
michael@0 244 #endif // mozilla_net_Seer_h

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