Make synchronous methods on disk_cache::SimpleEntryImpl() reentrant.

net/disk_cache/simple/simple_synchronous_entry.h

 // Copyright (c) 2013 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.
 
 #ifndef NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/platform_file.h"
 #include "base/task_runner.h"
 #include "base/time.h"
 #include "net/base/completion_callback.h"
+#include "net/disk_cache/simple/simple_disk_format.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace net {
 class IOBuffer;
 }
 
 namespace disk_cache {
@@ skipping 38 matching lines @@
                 net::IOBuffer* buf,
                 int buf_len,
                 const SynchronousOperationCallback& callback);
   void WriteData(int index,
                  int offset,
                  net::IOBuffer* buf,
                  int buf_len,
                  const SynchronousOperationCallback& callback,
                  bool truncate);
 
+  const base::FilePath& path() const { return path_; }
   std::string key() const { return key_; }
   base::Time last_used() const { return last_used_; }
   base::Time last_modified() const { return last_modified_; }
   int32 data_size(int index) const { return data_size_[index]; }
 
  private:
-  static const int kIndexCount = 3;
-
   SimpleSynchronousEntry(
       const scoped_refptr<base::TaskRunner>& callback_runner,
       const base::FilePath& path,
       const std::string& key);
 
   // Like Entry, the SimpleSynchronousEntry self releases when Close() is
   // called.
   ~SimpleSynchronousEntry();
 
   bool OpenOrCreateFiles(bool create);
   bool InitializeForOpen();
   bool InitializeForCreate();
 
   scoped_refptr<base::TaskRunner> callback_runner_;
   const base::FilePath path_;
   const std::string key_;
 
   bool initialized_;
 
   base::Time last_used_;
   base::Time last_modified_;
-  int32 data_size_[kIndexCount];
+  int32 data_size_[kSimpleEntryFileCount];
 
-  base::PlatformFile files_[kIndexCount];
+  base::PlatformFile files_[kSimpleEntryFileCount];
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_