Add m-esr52 at 52.6.0

1 files changed, 257 insertions, 0 deletions

diff --git a/dom/indexedDB/IndexedDatabaseManager.h b/dom/indexedDB/IndexedDatabaseManager.h
new file mode 100644
index 000000000..8bb9d7003
--- /dev/null
+++ b/dom/indexedDB/IndexedDatabaseManager.h
@@ -0,0 +1,257 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_indexeddatabasemanager_h__
+#define mozilla_dom_indexeddatabasemanager_h__
+
+#include "nsIObserver.h"
+
+#include "js/TypeDecls.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/dom/quota/PersistenceType.h"
+#include "mozilla/Mutex.h"
+#include "nsClassHashtable.h"
+#include "nsCOMPtr.h"
+#include "nsHashKeys.h"
+#include "nsITimer.h"
+
+class nsIEventTarget;
+
+namespace mozilla {
+
+class EventChainPostVisitor;
+
+namespace dom {
+
+class IDBFactory;
+
+namespace quota {
+
+class QuotaManager;
+
+} // namespace quota
+
+namespace indexedDB {
+
+class BackgroundUtilsChild;
+class FileManager;
+class FileManagerInfo;
+
+} // namespace indexedDB
+
+class IndexedDatabaseManager final
+  : public nsIObserver
+  , public nsITimerCallback
+{
+  typedef mozilla::dom::quota::PersistenceType PersistenceType;
+  typedef mozilla::dom::quota::QuotaManager QuotaManager;
+  typedef mozilla::dom::indexedDB::FileManager FileManager;
+  typedef mozilla::dom::indexedDB::FileManagerInfo FileManagerInfo;
+
+public:
+  enum LoggingMode
+  {
+    Logging_Disabled = 0,
+    Logging_Concise,
+    Logging_Detailed,
+    Logging_ConciseProfilerMarks,
+    Logging_DetailedProfilerMarks
+  };
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSITIMERCALLBACK
+
+  // Returns a non-owning reference.
+  static IndexedDatabaseManager*
+  GetOrCreate();
+
+  // Returns a non-owning reference.
+  static IndexedDatabaseManager*
+  Get();
+
+  static bool
+  IsClosed();
+
+  static bool
+  IsMainProcess()
+#ifdef DEBUG
+  ;
+#else
+  {
+    return sIsMainProcess;
+  }
+#endif
+
+  static bool
+  InLowDiskSpaceMode()
+#ifdef DEBUG
+  ;
+#else
+  {
+    return !!sLowDiskSpaceMode;
+  }
+#endif
+
+  static bool
+  InTestingMode();
+
+  static bool
+  FullSynchronous();
+
+  static LoggingMode
+  GetLoggingMode()
+#ifdef DEBUG
+  ;
+#else
+  {
+    return sLoggingMode;
+  }
+#endif
+
+  static mozilla::LogModule*
+  GetLoggingModule()
+#ifdef DEBUG
+  ;
+#else
+  {
+    return sLoggingModule;
+  }
+#endif
+
+  static bool
+  ExperimentalFeaturesEnabled();
+
+  static bool
+  ExperimentalFeaturesEnabled(JSContext* aCx, JSObject* aGlobal);
+
+  static bool
+  IsFileHandleEnabled();
+
+  static uint32_t
+  DataThreshold();
+
+  static uint32_t
+  MaxSerializedMsgSize();
+
+  void
+  ClearBackgroundActor();
+
+  void
+  NoteLiveQuotaManager(QuotaManager* aQuotaManager);
+
+  void
+  NoteShuttingDownQuotaManager();
+
+  already_AddRefed<FileManager>
+  GetFileManager(PersistenceType aPersistenceType,
+                 const nsACString& aOrigin,
+                 const nsAString& aDatabaseName);
+
+  void
+  AddFileManager(FileManager* aFileManager);
+
+  void
+  InvalidateAllFileManagers();
+
+  void
+  InvalidateFileManagers(PersistenceType aPersistenceType,
+                         const nsACString& aOrigin);
+
+  void
+  InvalidateFileManager(PersistenceType aPersistenceType,
+                        const nsACString& aOrigin,
+                        const nsAString& aDatabaseName);
+
+  nsresult
+  AsyncDeleteFile(FileManager* aFileManager,
+                  int64_t aFileId);
+
+  // Don't call this method in real code, it blocks the main thread!
+  // It is intended to be used by mochitests to test correctness of the special
+  // reference counting of stored blobs/files.
+  nsresult
+  BlockAndGetFileReferences(PersistenceType aPersistenceType,
+                            const nsACString& aOrigin,
+                            const nsAString& aDatabaseName,
+                            int64_t aFileId,
+                            int32_t* aRefCnt,
+                            int32_t* aDBRefCnt,
+                            int32_t* aSliceRefCnt,
+                            bool* aResult);
+
+  nsresult
+  FlushPendingFileDeletions();
+
+#ifdef ENABLE_INTL_API
+  static const nsCString&
+  GetLocale();
+#endif
+
+  static mozilla::Mutex&
+  FileMutex()
+  {
+    IndexedDatabaseManager* mgr = Get();
+    NS_ASSERTION(mgr, "Must have a manager here!");
+
+    return mgr->mFileMutex;
+  }
+
+  static nsresult
+  CommonPostHandleEvent(EventChainPostVisitor& aVisitor, IDBFactory* aFactory);
+
+  static bool
+  ResolveSandboxBinding(JSContext* aCx);
+
+  static bool
+  DefineIndexedDB(JSContext* aCx, JS::Handle<JSObject*> aGlobal);
+
+private:
+  IndexedDatabaseManager();
+  ~IndexedDatabaseManager();
+
+  nsresult
+  Init();
+
+  void
+  Destroy();
+
+  static void
+  LoggingModePrefChangedCallback(const char* aPrefName, void* aClosure);
+
+  nsCOMPtr<nsIEventTarget> mBackgroundThread;
+
+  nsCOMPtr<nsITimer> mDeleteTimer;
+
+  // Maintains a list of all file managers per origin. This list isn't
+  // protected by any mutex but it is only ever touched on the IO thread.
+  nsClassHashtable<nsCStringHashKey, FileManagerInfo> mFileManagerInfos;
+
+  nsClassHashtable<nsRefPtrHashKey<FileManager>,
+                   nsTArray<int64_t>> mPendingDeleteInfos;
+
+  // Lock protecting FileManager.mFileInfos.
+  // It's s also used to atomically update FileInfo.mRefCnt, FileInfo.mDBRefCnt
+  // and FileInfo.mSliceRefCnt
+  mozilla::Mutex mFileMutex;
+
+#ifdef ENABLE_INTL_API
+  nsCString mLocale;
+#endif
+
+  indexedDB::BackgroundUtilsChild* mBackgroundActor;
+
+  static bool sIsMainProcess;
+  static bool sFullSynchronousMode;
+  static LazyLogModule sLoggingModule;
+  static Atomic<LoggingMode> sLoggingMode;
+  static mozilla::Atomic<bool> sLowDiskSpaceMode;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_indexeddatabasemanager_h__