1 files changed, 72 insertions, 0 deletions
diff --git a/netwerk/cache/nsDiskCache.h b/netwerk/cache/nsDiskCache.h
new file mode 100644
index 0000000000..e01860b7bf
--- /dev/null
+++ b/netwerk/cache/nsDiskCache.h
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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 _nsDiskCache_h_
+#define _nsDiskCache_h_
+
+#include "nsCacheEntry.h"
+
+#ifdef XP_WIN
+#  include <winsock.h>  // for htonl/ntohl
+#endif
+
+class nsDiskCache {
+ public:
+  enum {
+    kCurrentVersion =
+        0x00010013  // format = 16 bits major version/16 bits minor version
+  };
+
+  enum { kData, kMetaData };
+
+  // Stores the reason why the cache is corrupt.
+  // Note: I'm only listing the enum values explicitly for easy mapping when
+  // looking at telemetry data.
+  enum CorruptCacheInfo {
+    kNotCorrupt = 0,
+    kInvalidArgPointer = 1,
+    kUnexpectedError = 2,
+    kOpenCacheMapError = 3,
+    kBlockFilesShouldNotExist = 4,
+    kOutOfMemory = 5,
+    kCreateCacheSubdirectories = 6,
+    kBlockFilesShouldExist = 7,
+    kHeaderSizeNotRead = 8,
+    kHeaderIsDirty = 9,
+    kVersionMismatch = 10,
+    kRecordsIncomplete = 11,
+    kHeaderIncomplete = 12,
+    kNotEnoughToRead = 13,
+    kEntryCountIncorrect = 14,
+    kCouldNotGetBlockFileForIndex = 15,
+    kCouldNotCreateBlockFile = 16,
+    kBlockFileSizeError = 17,
+    kBlockFileBitMapWriteError = 18,
+    kBlockFileSizeLessThanBitMap = 19,
+    kBlockFileBitMapReadError = 20,
+    kBlockFileEstimatedSizeError = 21,
+    kFlushHeaderError = 22,
+    kCacheCleanFilePathError = 23,
+    kCacheCleanOpenFileError = 24,
+    kCacheCleanTimerError = 25
+  };
+
+  // Parameter initval initializes internal state of hash function. Hash values
+  // are different for the same text when different initval is used. It can be
+  // any random number.
+  //
+  // It can be used for generating 64-bit hash value:
+  //   (uint64_t(Hash(key, initval1)) << 32) | Hash(key, initval2)
+  //
+  // It can be also used to hash multiple strings:
+  //   h = Hash(string1, 0);
+  //   h = Hash(string2, h);
+  //   ...
+  static PLDHashNumber Hash(const char* key, PLDHashNumber initval = 0);
+  static nsresult Truncate(PRFileDesc* fd, uint32_t newEOF);
+};
+
+#endif  // _nsDiskCache_h_