1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/indexedDB/IndexedDatabaseManager.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,174 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef mozilla_dom_indexeddb_indexeddatabasemanager_h__
1.11 +#define mozilla_dom_indexeddb_indexeddatabasemanager_h__
1.12 +
1.13 +#include "mozilla/dom/indexedDB/IndexedDatabase.h"
1.14 +
1.15 +#include "nsIIndexedDatabaseManager.h"
1.16 +#include "nsIObserver.h"
1.17 +
1.18 +#include "js/TypeDecls.h"
1.19 +#include "mozilla/Atomics.h"
1.20 +#include "mozilla/dom/quota/PersistenceType.h"
1.21 +#include "mozilla/Mutex.h"
1.22 +#include "nsClassHashtable.h"
1.23 +#include "nsHashKeys.h"
1.24 +
1.25 +#define INDEXEDDB_MANAGER_CONTRACTID "@mozilla.org/dom/indexeddb/manager;1"
1.26 +
1.27 +class nsPIDOMWindow;
1.28 +
1.29 +namespace mozilla {
1.30 +class EventChainPostVisitor;
1.31 +namespace dom {
1.32 +class TabContext;
1.33 +namespace quota {
1.34 +class OriginOrPatternString;
1.35 +}
1.36 +}
1.37 +}
1.38 +
1.39 +BEGIN_INDEXEDDB_NAMESPACE
1.40 +
1.41 +class FileManager;
1.42 +class FileManagerInfo;
1.43 +
1.44 +class IndexedDatabaseManager MOZ_FINAL : public nsIIndexedDatabaseManager,
1.45 + public nsIObserver
1.46 +{
1.47 + typedef mozilla::dom::quota::OriginOrPatternString OriginOrPatternString;
1.48 + typedef mozilla::dom::quota::PersistenceType PersistenceType;
1.49 +
1.50 +public:
1.51 + NS_DECL_ISUPPORTS
1.52 + NS_DECL_NSIINDEXEDDATABASEMANAGER
1.53 + NS_DECL_NSIOBSERVER
1.54 +
1.55 + // Returns a non-owning reference.
1.56 + static IndexedDatabaseManager*
1.57 + GetOrCreate();
1.58 +
1.59 + // Returns a non-owning reference.
1.60 + static IndexedDatabaseManager*
1.61 + Get();
1.62 +
1.63 + // Returns an owning reference! No one should call this but the factory.
1.64 + static IndexedDatabaseManager*
1.65 + FactoryCreate();
1.66 +
1.67 + static bool
1.68 + IsClosed();
1.69 +
1.70 + static bool
1.71 + IsMainProcess()
1.72 +#ifdef DEBUG
1.73 + ;
1.74 +#else
1.75 + {
1.76 + return sIsMainProcess;
1.77 + }
1.78 +#endif
1.79 +
1.80 + static bool
1.81 + InLowDiskSpaceMode()
1.82 +#ifdef DEBUG
1.83 + ;
1.84 +#else
1.85 + {
1.86 + return !!sLowDiskSpaceMode;
1.87 + }
1.88 +#endif
1.89 +
1.90 + already_AddRefed<FileManager>
1.91 + GetFileManager(PersistenceType aPersistenceType,
1.92 + const nsACString& aOrigin,
1.93 + const nsAString& aDatabaseName);
1.94 +
1.95 + void
1.96 + AddFileManager(FileManager* aFileManager);
1.97 +
1.98 + void
1.99 + InvalidateAllFileManagers();
1.100 +
1.101 + void
1.102 + InvalidateFileManagers(PersistenceType aPersistenceType,
1.103 + const OriginOrPatternString& aOriginOrPattern);
1.104 +
1.105 + void
1.106 + InvalidateFileManager(PersistenceType aPersistenceType,
1.107 + const nsACString& aOrigin,
1.108 + const nsAString& aDatabaseName);
1.109 +
1.110 + nsresult
1.111 + AsyncDeleteFile(FileManager* aFileManager,
1.112 + int64_t aFileId);
1.113 +
1.114 + // Don't call this method in real code, it blocks the main thread!
1.115 + // It is intended to be used by mochitests to test correctness of the special
1.116 + // reference counting of stored blobs/files.
1.117 + nsresult
1.118 + BlockAndGetFileReferences(PersistenceType aPersistenceType,
1.119 + const nsACString& aOrigin,
1.120 + const nsAString& aDatabaseName,
1.121 + int64_t aFileId,
1.122 + int32_t* aRefCnt,
1.123 + int32_t* aDBRefCnt,
1.124 + int32_t* aSliceRefCnt,
1.125 + bool* aResult);
1.126 +
1.127 + static mozilla::Mutex&
1.128 + FileMutex()
1.129 + {
1.130 + IndexedDatabaseManager* mgr = Get();
1.131 + NS_ASSERTION(mgr, "Must have a manager here!");
1.132 +
1.133 + return mgr->mFileMutex;
1.134 + }
1.135 +
1.136 + static nsresult
1.137 + FireWindowOnError(nsPIDOMWindow* aOwner,
1.138 + EventChainPostVisitor& aVisitor);
1.139 +
1.140 + static bool
1.141 + TabContextMayAccessOrigin(const mozilla::dom::TabContext& aContext,
1.142 + const nsACString& aOrigin);
1.143 +
1.144 + static bool
1.145 + DefineIndexedDB(JSContext* aCx, JS::Handle<JSObject*> aGlobal);
1.146 +
1.147 +private:
1.148 + IndexedDatabaseManager();
1.149 + ~IndexedDatabaseManager();
1.150 +
1.151 + nsresult
1.152 + Init();
1.153 +
1.154 + void
1.155 + Destroy();
1.156 +
1.157 + static PLDHashOperator
1.158 + InvalidateAndRemoveFileManagers(const nsACString& aKey,
1.159 + nsAutoPtr<FileManagerInfo>& aValue,
1.160 + void* aUserArg);
1.161 +
1.162 + // Maintains a list of all file managers per origin. This list isn't
1.163 + // protected by any mutex but it is only ever touched on the IO thread.
1.164 + nsClassHashtable<nsCStringHashKey, FileManagerInfo> mFileManagerInfos;
1.165 +
1.166 + // Lock protecting FileManager.mFileInfos and nsDOMFileBase.mFileInfos
1.167 + // It's s also used to atomically update FileInfo.mRefCnt, FileInfo.mDBRefCnt
1.168 + // and FileInfo.mSliceRefCnt
1.169 + mozilla::Mutex mFileMutex;
1.170 +
1.171 + static bool sIsMainProcess;
1.172 + static mozilla::Atomic<bool> sLowDiskSpaceMode;
1.173 +};
1.174 +
1.175 +END_INDEXEDDB_NAMESPACE
1.176 +
1.177 +#endif /* mozilla_dom_indexeddb_indexeddatabasemanager_h__ */
