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Issue 10182012: gdata: Remove GDataFileSystem::GetFileFromCacheByResourceIdAndMd5Internal() (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years, 8 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_ 5 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
6 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_ 6 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
7 #pragma once 7 #pragma once
8 8
9 #include <sys/stat.h> 9 #include <sys/stat.h>
10 10
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49 49
50 // Callback for completion of cache operation. 50 // Callback for completion of cache operation.
51 typedef base::Callback<void(base::PlatformFileError error, 51 typedef base::Callback<void(base::PlatformFileError error,
52 const std::string& resource_id, 52 const std::string& resource_id,
53 const std::string& md5)> CacheOperationCallback; 53 const std::string& md5)> CacheOperationCallback;
54 54
55 // Callback for GetFileFromCache. 55 // Callback for GetFileFromCache.
56 typedef base::Callback<void(base::PlatformFileError error, 56 typedef base::Callback<void(base::PlatformFileError error,
57 const std::string& resource_id, 57 const std::string& resource_id,
58 const std::string& md5, 58 const std::string& md5,
59 const FilePath& gdata_file_path,
60 const FilePath& cache_file_path)> 59 const FilePath& cache_file_path)>
61 GetFileFromCacheCallback; 60 GetFileFromCacheCallback;
62 61
63 // Used to get result of file search. Please note that |file| is a live 62 // Used to get result of file search. Please note that |file| is a live
64 // object provided to this callback under lock. It must not be used outside 63 // object provided to this callback under lock. It must not be used outside
65 // of the callback method. This callback can be invoked on different thread 64 // of the callback method. This callback can be invoked on different thread
66 // than one that started FileFileByPath() request. 65 // than one that started FileFileByPath() request.
67 typedef base::Callback<void(base::PlatformFileError error, 66 typedef base::Callback<void(base::PlatformFileError error,
68 const FilePath& directory_path, 67 const FilePath& directory_path,
69 GDataEntry* entry)> 68 GDataEntry* entry)>
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1102 1101
1103 // Task posted from GetFileFromCacheInternal to run on IO thread pool. 1102 // Task posted from GetFileFromCacheInternal to run on IO thread pool.
1104 // Checks if file corresponding to |resource_id| and |md5| exists in cache 1103 // Checks if file corresponding to |resource_id| and |md5| exists in cache
1105 // map. 1104 // map.
1106 // Even though this task doesn't involve IO operations, it still runs on the 1105 // Even though this task doesn't involve IO operations, it still runs on the
1107 // IO thread pool, to force synchronization of all tasks on IO thread pool, 1106 // IO thread pool, to force synchronization of all tasks on IO thread pool,
1108 // e.g. this absolute must execute after InitailizeCacheOnIOTheadPool. 1107 // e.g. this absolute must execute after InitailizeCacheOnIOTheadPool.
1109 void GetFileFromCacheOnIOThreadPool( 1108 void GetFileFromCacheOnIOThreadPool(
1110 const std::string& resource_id, 1109 const std::string& resource_id,
1111 const std::string& md5, 1110 const std::string& md5,
1112 const FilePath& gdata_file_path,
1113 base::PlatformFileError* error, 1111 base::PlatformFileError* error,
1114 FilePath* cache_file_path); 1112 FilePath* cache_file_path);
1115 1113
1116 // Task posted from GetCacheState to run on IO thread pool. 1114 // Task posted from GetCacheState to run on IO thread pool.
1117 // Checks if file corresponding to |resource_id| and |md5| exists in cache 1115 // Checks if file corresponding to |resource_id| and |md5| exists in cache
1118 // map. If yes, returns its cache state; otherwise, returns CACHE_STATE_NONE. 1116 // map. If yes, returns its cache state; otherwise, returns CACHE_STATE_NONE.
1119 // Even though this task doesn't involve IO operations, it still runs on the 1117 // Even though this task doesn't involve IO operations, it still runs on the
1120 // IO thread pool, to force synchronization of all tasks on IO thread pool, 1118 // IO thread pool, to force synchronization of all tasks on IO thread pool,
1121 // e.g. this absolutely must execute after InitailizeCacheOnIOTheadPool. 1119 // e.g. this absolutely must execute after InitailizeCacheOnIOTheadPool.
1122 void GetCacheStateOnIOThreadPool( 1120 void GetCacheStateOnIOThreadPool(
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1208 const CacheOperationCallback& callback); 1206 const CacheOperationCallback& callback);
1209 1207
1210 // Callback for Unpin. Runs |callback| and notifies the observers. 1208 // Callback for Unpin. Runs |callback| and notifies the observers.
1211 void OnFileUnpinned(base::PlatformFileError* error, 1209 void OnFileUnpinned(base::PlatformFileError* error,
1212 const std::string& resource_id, 1210 const std::string& resource_id,
1213 const std::string& md5, 1211 const std::string& md5,
1214 const CacheOperationCallback& callback); 1212 const CacheOperationCallback& callback);
1215 1213
1216 // Helper function for internally handling responses from 1214 // Helper function for internally handling responses from
1217 // GetFileFromCacheByResourceIdAndMd5() calls during processing of 1215 // GetFileFromCacheByResourceIdAndMd5() calls during processing of
1218 // GetFile() request. 1216 // GetFileByPath() request.
1219 void OnGetFileFromCache(const GetFileFromCacheParams& params, 1217 void OnGetFileFromCache(const GetFileFromCacheParams& params,
1220 base::PlatformFileError error, 1218 base::PlatformFileError error,
1221 const std::string& resource_id, 1219 const std::string& resource_id,
1222 const std::string& md5, 1220 const std::string& md5,
1223 const FilePath& gdata_file_path,
1224 const FilePath& cache_file_path); 1221 const FilePath& cache_file_path);
1225 1222
1226 // Frees up disk space to store the given number of bytes, while keeping 1223 // Frees up disk space to store the given number of bytes, while keeping
1227 // kMinFreSpace bytes on the disk, if needed. |has_enough_space| is 1224 // kMinFreSpace bytes on the disk, if needed. |has_enough_space| is
1228 // updated to indicate if we have enough space. 1225 // updated to indicate if we have enough space.
1229 void FreeDiskSpaceIfNeededFor(int64 num_bytes, 1226 void FreeDiskSpaceIfNeededFor(int64 num_bytes,
1230 bool* has_enough_space); 1227 bool* has_enough_space);
1231 1228
1232 // Frees up disk space if we have less than kMinFreSpace. |has_enough_space| 1229 // Frees up disk space if we have less than kMinFreSpace. |has_enough_space|
1233 // is updated to indicate if we have enough space. 1230 // is updated to indicate if we have enough space.
1234 void FreeDiskSpaceIfNeeded(bool* has_enough_space); 1231 void FreeDiskSpaceIfNeeded(bool* has_enough_space);
1235 1232
1236 // Starts downloading a file if we have enough disk space indicated by 1233 // Starts downloading a file if we have enough disk space indicated by
1237 // |has_enough_space|. 1234 // |has_enough_space|.
1238 void StartDownloadFileIfEnoughSpace(const GetFileFromCacheParams& params, 1235 void StartDownloadFileIfEnoughSpace(const GetFileFromCacheParams& params,
1239 const FilePath& cache_file_path, 1236 const FilePath& cache_file_path,
1240 bool* has_enough_space); 1237 bool* has_enough_space);
1241 1238
1242 // Cache internal helper functions. 1239 // Cache internal helper functions.
1243 1240
1244 // Unsafe (unlocked) version of InitializeCacheIfnecessary method. 1241 // Unsafe (unlocked) version of InitializeCacheIfnecessary method.
1245 void UnsafeInitializeCacheIfNecessary(); 1242 void UnsafeInitializeCacheIfNecessary();
1246 1243
1247 // Scans cache subdirectory |sub_dir_type| and build or update |cache_map| 1244 // Scans cache subdirectory |sub_dir_type| and build or update |cache_map|
1248 // with found file blobs or symlinks. 1245 // with found file blobs or symlinks.
1249 void ScanCacheDirectory( 1246 void ScanCacheDirectory(
1250 GDataRootDirectory::CacheSubDirectoryType sub_dir_type, 1247 GDataRootDirectory::CacheSubDirectoryType sub_dir_type,
1251 GDataRootDirectory::CacheMap* cache_map); 1248 GDataRootDirectory::CacheMap* cache_map);
1252 1249
1253 // Called from GetFileFromCacheByResourceIdAndMd5() and
1254 // GetFileFromCacheByPath().
1255 void GetFileFromCacheByResourceIdAndMd5Internal(
1256 const std::string& resource_id,
1257 const std::string& md5,
1258 const FilePath& gdata_file_path,
1259 const GetFileFromCacheCallback& callback);
1260
1261 // Wrapper task around any sequenced task that runs on IO thread pool that 1250 // Wrapper task around any sequenced task that runs on IO thread pool that
1262 // makes sure |in_shutdown_| and |on_io_completed_| are handled properly in 1251 // makes sure |in_shutdown_| and |on_io_completed_| are handled properly in
1263 // the right order. 1252 // the right order.
1264 void RunTaskOnIOThreadPool(const base::Closure& task); 1253 void RunTaskOnIOThreadPool(const base::Closure& task);
1265 1254
1266 // Wrapper around BrowserThread::PostTask to post 1255 // Wrapper around BrowserThread::PostTask to post
1267 // RunTaskOnIOThreadPool task to the blocking thread pool. 1256 // RunTaskOnIOThreadPool task to the blocking thread pool.
1268 // TODO(satorux): As of now, it's posting to FILE thread. 1257 // TODO(satorux): As of now, it's posting to FILE thread.
1269 void PostBlockingPoolSequencedTask( 1258 void PostBlockingPoolSequencedTask(
1270 const std::string& sequence_token_name, 1259 const std::string& sequence_token_name,
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1357 }; 1346 };
1358 1347
1359 // Sets the free disk space getter for testing. 1348 // Sets the free disk space getter for testing.
1360 // The existing getter is deleted. 1349 // The existing getter is deleted.
1361 void SetFreeDiskSpaceGetterForTesting( 1350 void SetFreeDiskSpaceGetterForTesting(
1362 FreeDiskSpaceGetterInterface* getter); 1351 FreeDiskSpaceGetterInterface* getter);
1363 1352
1364 } // namespace gdata 1353 } // namespace gdata
1365 1354
1366 #endif // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_ 1355 #endif // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
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