Disk cache: Interface for the sparse cache support....

net/disk_cache/entry_impl.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/disk_cache/entry_impl.h"
 
 #include "base/histogram.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "net/base/io_buffer.h"
@@ skipping 333 matching lines @@
   }
 
   if (io_callback && completed)
     io_callback->Discard();
 
   if (backend_->cache_type() == net::DISK_CACHE)
     stats.AddTime(Time::Now() - start);
   return (completed || !completion_callback) ? buf_len : net::ERR_IO_PENDING;
 }
 
+int EntryImpl::ReadSparseData(int64 offset, net::IOBuffer* buf, int buf_len,
+                              net::CompletionCallback* completion_callback) {
+  return net::ERR_CACHE_OPERATION_NOT_SUPPORTED;
+}
+
+int EntryImpl::WriteSparseData(int64 offset, net::IOBuffer* buf, int buf_len,
+                               net::CompletionCallback* completion_callback) {
+  return net::ERR_CACHE_OPERATION_NOT_SUPPORTED;
+}
+
+int EntryImpl::GetAvailableRange(int64 offset, int len, int64* start) {
+  return net::ERR_CACHE_OPERATION_NOT_SUPPORTED;
+}
+
 uint32 EntryImpl::GetHash() {
   return entry_.Data()->hash;
 }
 
 bool EntryImpl::CreateEntry(Addr node_address, const std::string& key,
                             uint32 hash) {
   Trace("Create entry In");
   EntryStore* entry_store = entry_.Data();
   RankingsNode* node = node_.Data();
   memset(entry_store, 0, sizeof(EntryStore) * entry_.address().num_blocks());
@@ skipping 446 matching lines @@
   Trace("%s 0x%p 0x%x 0x%x", msg, reinterpret_cast<void*>(this),
         entry_.address().value(), node_.address().value());
 
   Trace("  data: 0x%x 0x%x 0x%x", entry_.Data()->data_addr[0],
         entry_.Data()->data_addr[1], entry_.Data()->long_key);
 
   Trace("  doomed: %d 0x%p 0x%x", doomed_, pointer, dirty);
 }
 
 }  // namespace disk_cache