Simple Cache: DoomEntriesBetween()

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 <set>
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"

[gavinp, 2013/04/17 07:41:18]

Need scoped_ptr.h too.

[pasko-google - do not use, 2013/04/17 19:47:52]

why?

 #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_entry_format.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
@@ skipping 21 matching lines @@
 
   static void OpenEntry(
       const base::FilePath& path,
       const std::string& key,
       const scoped_refptr<base::TaskRunner>& callback_runner,
       const SynchronousCreationCallback& callback);
 
   static void CreateEntry(
       const base::FilePath& path,
       const std::string& key,
       const scoped_refptr<base::TaskRunner>& callback_runner,

[gavinp, 2013/04/18 06:11:35]

This is why!

       const SynchronousCreationCallback& callback);
 
   // Deletes an entry without first Opening it. Does not check if there is
   // already an Entry object in memory holding the open files. Be careful! This
   // is meant to be used by the Backend::DoomEntry() call. |callback| will be
   // run by |callback_runner|.
   static void DoomEntry(const base::FilePath& path,
                         const std::string& key,
                         scoped_refptr<base::TaskRunner> callback_runner,
                         const net::CompletionCallback& callback);
 
+  // Like |DoomEntry()| above. Deletes entry files corresponding to the set of

[gavinp, 2013/04/17 07:41:18]

// Like |DoomEntry()| above. Deletes all entries corresponding to the
|key_hashes|. Succeeds only when all entries are deleted.

[pasko-google - do not use, 2013/04/17 19:47:52]

I wanted to stress the word 'files', but OK. Done.

+  // key hashes: |key_hashes|.
+  static void DoomEntrySet(scoped_ptr<std::set<uint64> > key_hashes,
+                           const base::FilePath& path,
+                           scoped_refptr<base::TaskRunner> callback_runner,
+                           const net::CompletionCallback& callback);
+
   // N.B. Close(), ReadData() and WriteData() may block on IO.
   void Close();
   void ReadData(int index,
                 int offset,
                 net::IOBuffer* buf,
                 int buf_len,
                 const SynchronousOperationCallback& callback);
   void WriteData(int index,
                  int offset,
                  net::IOBuffer* buf,
@@ skipping 23 matching lines @@
 
   // Returns a net::Error, i.e. net::OK on success.
   int InitializeForOpen();
 
   // Returns a net::Error, including net::OK on success and net::FILE_EXISTS
   // when the entry already exists.
   int InitializeForCreate();
 
   void Doom();
 
+  static bool DeleteFilesForEntry(const base::FilePath& path,
+                                  const std::string& key);
+
   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_[kSimpleEntryFileCount];
 
   base::PlatformFile files_[kSimpleEntryFileCount];
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_