1 files changed, 121 insertions, 0 deletions
diff --git a/netwerk/cache2/CacheObserver.h b/netwerk/cache2/CacheObserver.h
new file mode 100644
index 000000000..62e5bbc6e
--- /dev/null
+++ b/netwerk/cache2/CacheObserver.h
@@ -0,0 +1,121 @@
+/* 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 CacheObserver__h__
+#define CacheObserver__h__
+
+#include "nsIObserver.h"
+#include "nsIFile.h"
+#include "nsCOMPtr.h"
+#include "nsWeakReference.h"
+#include <algorithm>
+
+namespace mozilla {
+namespace net {
+
+class CacheObserver : public nsIObserver
+                    , public nsSupportsWeakReference
+{
+  virtual ~CacheObserver() {}
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+
+  static nsresult Init();
+  static nsresult Shutdown();
+  static CacheObserver* Self() { return sSelf; }
+
+  // Access to preferences
+  static bool UseNewCache();
+  static bool UseDiskCache()
+    { return sUseDiskCache; }
+  static bool UseMemoryCache()
+    { return sUseMemoryCache; }
+  static uint32_t MetadataMemoryLimit() // result in bytes.
+    { return sMetadataMemoryLimit << 10; }
+  static uint32_t MemoryCacheCapacity(); // result in bytes.
+  static uint32_t DiskCacheCapacity() // result in bytes.
+    { return sDiskCacheCapacity << 10; }
+  static void SetDiskCacheCapacity(uint32_t); // parameter in bytes.
+  static uint32_t DiskFreeSpaceSoftLimit() // result in bytes.
+    { return sDiskFreeSpaceSoftLimit << 10; }
+  static uint32_t DiskFreeSpaceHardLimit() // result in bytes.
+    { return sDiskFreeSpaceHardLimit << 10; }
+  static bool SmartCacheSizeEnabled()
+    { return sSmartCacheSizeEnabled; }
+  static uint32_t PreloadChunkCount()
+    { return sPreloadChunkCount; }
+  static uint32_t MaxMemoryEntrySize() // result in bytes.
+    { return sMaxMemoryEntrySize << 10; }
+  static uint32_t MaxDiskEntrySize() // result in bytes.
+    { return sMaxDiskEntrySize << 10; }
+  static uint32_t MaxDiskChunksMemoryUsage(bool aPriority) // result in bytes.
+    { return aPriority ? sMaxDiskPriorityChunksMemoryUsage << 10
+                       : sMaxDiskChunksMemoryUsage << 10; }
+  static uint32_t CompressionLevel()
+    { return sCompressionLevel; }
+  static uint32_t HalfLifeSeconds()
+    { return sHalfLifeHours * 60.0F * 60.0F; }
+  static int32_t HalfLifeExperiment()
+    { return sHalfLifeExperiment; }
+  static bool ClearCacheOnShutdown()
+    { return sSanitizeOnShutdown && sClearCacheOnShutdown; }
+  static bool CacheFSReported()
+    { return sCacheFSReported; }
+  static void SetCacheFSReported();
+  static bool HashStatsReported()
+    { return sHashStatsReported; }
+  static void SetHashStatsReported();
+  static void ParentDirOverride(nsIFile ** aDir);
+
+  static bool EntryIsTooBig(int64_t aSize, bool aUsingDisk);
+
+  static uint32_t MaxShutdownIOLag()
+    { return sMaxShutdownIOLag; }
+  static bool IsPastShutdownIOLag();
+
+  static bool ShuttingDown()
+    { return sShutdownDemandedTime != PR_INTERVAL_NO_TIMEOUT; }
+
+private:
+  static CacheObserver* sSelf;
+
+  void StoreDiskCacheCapacity();
+  void StoreCacheFSReported();
+  void StoreHashStatsReported();
+  void AttachToPreferences();
+
+  static uint32_t sUseNewCache;
+  static bool sUseMemoryCache;
+  static bool sUseDiskCache;
+  static uint32_t sMetadataMemoryLimit;
+  static int32_t sMemoryCacheCapacity;
+  static int32_t sAutoMemoryCacheCapacity;
+  static Atomic<uint32_t, Relaxed> sDiskCacheCapacity;
+  static uint32_t sDiskFreeSpaceSoftLimit;
+  static uint32_t sDiskFreeSpaceHardLimit;
+  static bool sSmartCacheSizeEnabled;
+  static uint32_t sPreloadChunkCount;
+  static int32_t sMaxMemoryEntrySize;
+  static int32_t sMaxDiskEntrySize;
+  static uint32_t sMaxDiskChunksMemoryUsage;
+  static uint32_t sMaxDiskPriorityChunksMemoryUsage;
+  static uint32_t sCompressionLevel;
+  static float sHalfLifeHours;
+  static int32_t sHalfLifeExperiment;
+  static bool sSanitizeOnShutdown;
+  static bool sClearCacheOnShutdown;
+  static bool sCacheFSReported;
+  static bool sHashStatsReported;
+  static Atomic<uint32_t, Relaxed> sMaxShutdownIOLag;
+  static Atomic<PRIntervalTime> sShutdownDemandedTime;
+
+  // Non static properties, accessible via sSelf
+  nsCOMPtr<nsIFile> mCacheParentDirectoryOverride;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif