mdlog: Add some helper functions for accessing segments map data.

Signed-off-by: Greg Farnum <gregf@hq.newdream.net>

diff --git a/src/mds/MDLog.h b/src/mds/MDLog.h
index 9012610a9cd4d398cd68c1bff2c346b347fd5d38..c4d5c4d8f144d78cab7634257ace12679b22244e 100644 (file)
--- a/src/mds/MDLog.h
+++ b/src/mds/MDLog.h
@@ -131,6 +131,14 @@ public:
     assert(!segments.empty());
     return segments.rbegin()->first;
   }
+  LogSegment *get_oldest_segment() {
+    return segments.begin()->second;
+  }
+  void remove_oldest_segment() {
+    map<uint64_t, LogSegment*>::iterator p = segments.begin();
+    delete p->second;
+    segments.erase(p);
+  }
 
 
 private: