fix old boost version

1 files changed, 7 insertions, 3 deletions

diff --git a/db/concurrency.h b/db/concurrency.h
index 40c96904cba..c6444bc6c95 100644
--- a/db/concurrency.h
+++ b/db/concurrency.h
@@ -262,9 +262,13 @@ namespace mongo {
         }
 
         bool lock_try(){
-            // old boost doesn't have try_lock :(
-            lock();
-            return true;
+            boost::system_time until = get_system_time();
+            until += boost::posix_time::milliseconds(0);
+            if( m.timed_lock( until ) ) { 
+                _minfo.entered();
+                return true;
+            }
+            return false;
         }
 
         void releaseEarly() {