QuotaManager: Return the remaining free disk space as quota.

webkit/quota/quota_manager.h

 // Copyright (c) 2012 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 WEBKIT_QUOTA_QUOTA_MANAGER_H_
 #define WEBKIT_QUOTA_QUOTA_MANAGER_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 21 matching lines @@
 class SequencedTaskRunner;
 class SingleThreadTaskRunner;
 }
 
 namespace quota_internals {
 class QuotaInternalsProxy;
 }
 
 namespace quota {
 
-struct QuotaManagerDeleter;
-
+class MockQuotaManager;
 class QuotaDatabase;
 class QuotaManagerProxy;
 class QuotaTemporaryStorageEvictor;
 class UsageTracker;
-class MockQuotaManager;
+
+struct QuotaManagerDeleter;
 
 struct QuotaAndUsage {
   int64 usage;
   int64 unlimited_usage;
   int64 quota;
   int64 available_disk_space;
 };
 
 // An interface called by QuotaTemporaryStorageEvictor.
 class QuotaEvictionHandler {
@@ skipping 122 matching lines @@
   void GetHostUsage(const std::string& host, StorageType type,
                     const HostUsageCallback& callback);
 
   void GetStatistics(std::map<std::string, std::string>* statistics);
 
   bool IsStorageUnlimited(const GURL& origin) const {
     return special_storage_policy_.get() &&
            special_storage_policy_->IsStorageUnlimited(origin);
   }
 
+  bool IsInstalledApp(const GURL& origin) const {
+    return special_storage_policy_.get() &&
+           special_storage_policy_->IsInstalledApp(origin);
+  }
+
   virtual void GetOriginsModifiedSince(StorageType type,
                                        base::Time modified_since,
                                        const GetOriginsCallback& callback);
 
   bool ResetUsageTracker(StorageType type);
 
   // Determines the portion of the temp pool that can be
   // utilized by a single host (ie. 5 for 20%).
   static const int kPerHostTemporaryPortion;
 
@@ skipping 39 matching lines @@
 
   class AvailableSpaceQueryTask;
   class DumpQuotaTableTask;
   class DumpOriginInfoTableTask;
 
   typedef QuotaDatabase::QuotaTableEntry QuotaTableEntry;
   typedef QuotaDatabase::OriginInfoTableEntry OriginInfoTableEntry;
   typedef std::vector<QuotaTableEntry> QuotaTableEntries;
   typedef std::vector<OriginInfoTableEntry> OriginInfoTableEntries;
 
+  // Function pointer type used to store the function which returns the
+  // available disk space for the disk containing the given FilePath.
+  typedef int64 (*GetAvailableDiskSpaceFn)(const FilePath&);
+
   typedef base::Callback<void(const QuotaTableEntries&)>
       DumpQuotaTableCallback;
   typedef base::Callback<void(const OriginInfoTableEntries&)>
       DumpOriginInfoTableCallback;
 
   struct EvictionContext {
     EvictionContext();
     virtual ~EvictionContext();
     GURL evicted_origin;
     StorageType evicted_type;
@@ skipping 120 matching lines @@
   // Map from origin to count.
   std::map<GURL, int> origins_in_use_;
   // Map from origin to error count.
   std::map<GURL, int> origins_in_error_;
 
   scoped_refptr<SpecialStoragePolicy> special_storage_policy_;
 
   base::WeakPtrFactory<QuotaManager> weak_factory_;
   base::RepeatingTimer<QuotaManager> histogram_timer_;
 
+  // Pointer to the function used to get the available disk space. This is
+  // overwritten by QuotaManagerTest in order to attain a deterministic reported
+  // value.

[kinuko, 2012/08/20 04:04:44]

nit: can you also add a comment about what is called if nothing is set.

[James Hawkins, 2012/08/22 18:51:36]

Done.

+  GetAvailableDiskSpaceFn get_disk_space_fn_;
+
   DISALLOW_COPY_AND_ASSIGN(QuotaManager);
 };
 
 struct QuotaManagerDeleter {
   static void Destruct(const QuotaManager* manager) {
     manager->DeleteOnCorrectThread();
   }
 };
 
 // The proxy may be called and finally released on any thread.
@@ skipping 25 matching lines @@
 
   QuotaManager* manager_;  // only accessed on the io thread
   scoped_refptr<base::SingleThreadTaskRunner> io_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(QuotaManagerProxy);
 };
 
 }  // namespace quota
 
 #endif  // WEBKIT_QUOTA_QUOTA_MANAGER_H_