mark when we access a Record

warning: this could be slow - but in my testing so far < .2% slowdown

1 files changed, 9 insertions, 0 deletions

diff --git a/db/record.cpp b/db/record.cpp
index 9c4fcab7931..7e8656c71e6 100644
--- a/db/record.cpp
+++ b/db/record.cpp
@@ -205,5 +205,14 @@ namespace mongo {
             return false;
         return ProcessInfo::blockInMemory( data );
     }
+
+    Record* Record::accessed() {
+        const size_t page = (size_t)data >> 12;
+        const size_t region = page >> 6;
+        const size_t offset = page & 0x3f;
+
+        ps::rolling.access( region , offset );
+        return this;
+    }
     
 }