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comparison: dom/indexedDB/IndexedDatabaseManager.h
dom/indexedDB/IndexedDatabaseManager.h
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef mozilla_dom_indexeddb_indexeddatabasemanager_h__ | |
| 8 #define mozilla_dom_indexeddb_indexeddatabasemanager_h__ | |
| 9 | |
| 10 #include "mozilla/dom/indexedDB/IndexedDatabase.h" | |
| 11 | |
| 12 #include "nsIIndexedDatabaseManager.h" | |
| 13 #include "nsIObserver.h" | |
| 14 | |
| 15 #include "js/TypeDecls.h" | |
| 16 #include "mozilla/Atomics.h" | |
| 17 #include "mozilla/dom/quota/PersistenceType.h" | |
| 18 #include "mozilla/Mutex.h" | |
| 19 #include "nsClassHashtable.h" | |
| 20 #include "nsHashKeys.h" | |
| 21 | |
| 22 #define INDEXEDDB_MANAGER_CONTRACTID "@mozilla.org/dom/indexeddb/manager;1" | |
| 23 | |
| 24 class nsPIDOMWindow; | |
| 25 | |
| 26 namespace mozilla { | |
| 27 class EventChainPostVisitor; | |
| 28 namespace dom { | |
| 29 class TabContext; | |
| 30 namespace quota { | |
| 31 class OriginOrPatternString; | |
| 32 } | |
| 33 } | |
| 34 } | |
| 35 | |
| 36 BEGIN_INDEXEDDB_NAMESPACE | |
| 37 | |
| 38 class FileManager; | |
| 39 class FileManagerInfo; | |
| 40 | |
| 41 class IndexedDatabaseManager MOZ_FINAL : public nsIIndexedDatabaseManager, | |
| 42 public nsIObserver | |
| 43 { | |
| 44 typedef mozilla::dom::quota::OriginOrPatternString OriginOrPatternString; | |
| 45 typedef mozilla::dom::quota::PersistenceType PersistenceType; | |
| 46 | |
| 47 public: | |
| 48 NS_DECL_ISUPPORTS | |
| 49 NS_DECL_NSIINDEXEDDATABASEMANAGER | |
| 50 NS_DECL_NSIOBSERVER | |
| 51 | |
| 52 // Returns a non-owning reference. | |
| 53 static IndexedDatabaseManager* | |
| 54 GetOrCreate(); | |
| 55 | |
| 56 // Returns a non-owning reference. | |
| 57 static IndexedDatabaseManager* | |
| 58 Get(); | |
| 59 | |
| 60 // Returns an owning reference! No one should call this but the factory. | |
| 61 static IndexedDatabaseManager* | |
| 62 FactoryCreate(); | |
| 63 | |
| 64 static bool | |
| 65 IsClosed(); | |
| 66 | |
| 67 static bool | |
| 68 IsMainProcess() | |
| 69 #ifdef DEBUG | |
| 70 ; | |
| 71 #else | |
| 72 { | |
| 73 return sIsMainProcess; | |
| 74 } | |
| 75 #endif | |
| 76 | |
| 77 static bool | |
| 78 InLowDiskSpaceMode() | |
| 79 #ifdef DEBUG | |
| 80 ; | |
| 81 #else | |
| 82 { | |
| 83 return !!sLowDiskSpaceMode; | |
| 84 } | |
| 85 #endif | |
| 86 | |
| 87 already_AddRefed<FileManager> | |
| 88 GetFileManager(PersistenceType aPersistenceType, | |
| 89 const nsACString& aOrigin, | |
| 90 const nsAString& aDatabaseName); | |
| 91 | |
| 92 void | |
| 93 AddFileManager(FileManager* aFileManager); | |
| 94 | |
| 95 void | |
| 96 InvalidateAllFileManagers(); | |
| 97 | |
| 98 void | |
| 99 InvalidateFileManagers(PersistenceType aPersistenceType, | |
| 100 const OriginOrPatternString& aOriginOrPattern); | |
| 101 | |
| 102 void | |
| 103 InvalidateFileManager(PersistenceType aPersistenceType, | |
| 104 const nsACString& aOrigin, | |
| 105 const nsAString& aDatabaseName); | |
| 106 | |
| 107 nsresult | |
| 108 AsyncDeleteFile(FileManager* aFileManager, | |
| 109 int64_t aFileId); | |
| 110 | |
| 111 // Don't call this method in real code, it blocks the main thread! | |
| 112 // It is intended to be used by mochitests to test correctness of the special | |
| 113 // reference counting of stored blobs/files. | |
| 114 nsresult | |
| 115 BlockAndGetFileReferences(PersistenceType aPersistenceType, | |
| 116 const nsACString& aOrigin, | |
| 117 const nsAString& aDatabaseName, | |
| 118 int64_t aFileId, | |
| 119 int32_t* aRefCnt, | |
| 120 int32_t* aDBRefCnt, | |
| 121 int32_t* aSliceRefCnt, | |
| 122 bool* aResult); | |
| 123 | |
| 124 static mozilla::Mutex& | |
| 125 FileMutex() | |
| 126 { | |
| 127 IndexedDatabaseManager* mgr = Get(); | |
| 128 NS_ASSERTION(mgr, "Must have a manager here!"); | |
| 129 | |
| 130 return mgr->mFileMutex; | |
| 131 } | |
| 132 | |
| 133 static nsresult | |
| 134 FireWindowOnError(nsPIDOMWindow* aOwner, | |
| 135 EventChainPostVisitor& aVisitor); | |
| 136 | |
| 137 static bool | |
| 138 TabContextMayAccessOrigin(const mozilla::dom::TabContext& aContext, | |
| 139 const nsACString& aOrigin); | |
| 140 | |
| 141 static bool | |
| 142 DefineIndexedDB(JSContext* aCx, JS::Handle<JSObject*> aGlobal); | |
| 143 | |
| 144 private: | |
| 145 IndexedDatabaseManager(); | |
| 146 ~IndexedDatabaseManager(); | |
| 147 | |
| 148 nsresult | |
| 149 Init(); | |
| 150 | |
| 151 void | |
| 152 Destroy(); | |
| 153 | |
| 154 static PLDHashOperator | |
| 155 InvalidateAndRemoveFileManagers(const nsACString& aKey, | |
| 156 nsAutoPtr<FileManagerInfo>& aValue, | |
| 157 void* aUserArg); | |
| 158 | |
| 159 // Maintains a list of all file managers per origin. This list isn't | |
| 160 // protected by any mutex but it is only ever touched on the IO thread. | |
| 161 nsClassHashtable<nsCStringHashKey, FileManagerInfo> mFileManagerInfos; | |
| 162 | |
| 163 // Lock protecting FileManager.mFileInfos and nsDOMFileBase.mFileInfos | |
| 164 // It's s also used to atomically update FileInfo.mRefCnt, FileInfo.mDBRefCnt | |
| 165 // and FileInfo.mSliceRefCnt | |
| 166 mozilla::Mutex mFileMutex; | |
| 167 | |
| 168 static bool sIsMainProcess; | |
| 169 static mozilla::Atomic<bool> sLowDiskSpaceMode; | |
| 170 }; | |
| 171 | |
| 172 END_INDEXEDDB_NAMESPACE | |
| 173 | |
| 174 #endif /* mozilla_dom_indexeddb_indexeddatabasemanager_h__ */ |
