Implememt garbage collection of old entries according to

version_watermark specified in progress marker during update processing.

BUG=347253

Review URL: https://codereview.chromium.org/180673002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254298 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 20 insertions, 0 deletions

diff --git a/sync/syncable/directory.cc b/sync/syncable/directory.cc
index d83b1f6..97e7071 100644
--- a/sync/syncable/directory.cc
+++ b/sync/syncable/directory.cc
@@ -903,6 +903,21 @@ void Directory::GetUnappliedUpdateMetaHandles(
   }
 }
 
+void Directory::GetMetaHandlesOfType(BaseTransaction* trans,
+                                     ModelType type,
+                                     std::vector<int64>* result) {
+  result->clear();
+  ScopedKernelLock lock(this);
+  for (MetahandlesMap::iterator it = kernel_->metahandles_map.begin();
+       it != kernel_->metahandles_map.end(); ++it) {
+    EntryKernel* entry = it->second;
+    const ModelType entry_type =
+        GetModelTypeFromSpecifics(entry->ref(SPECIFICS));
+    if (entry_type == type)
+      result->push_back(it->first);
+  }
+}
+
 void Directory::CollectMetaHandleCounts(
     std::vector<int>* num_entries_by_type,
     std::vector<int>* num_to_delete_entries_by_type) {
diff --git a/sync/syncable/directory.h b/sync/syncable/directory.h
index c5959b9..ca8f4f1 100644
--- a/sync/syncable/directory.h
+++ b/sync/syncable/directory.h
@@ -315,6 +315,11 @@ class SYNC_EXPORT Directory {
                                      FullModelTypeSet server_types,
                                      std::vector<int64>* result);
 
+  // Get all the metahandles of entries of |type|.
+  void GetMetaHandlesOfType(BaseTransaction* trans,
+                            ModelType type,
+                            Metahandles* result);
+
   // Get metahandle counts for various criteria to show on the
   // about:sync page. The information is computed on the fly
   // each time. If this results in a significant performance hit,