qlock can ask if in greedy mode or not

chx007 · Mar 16, 2012 · c485104 · c485104
1 parent b45d00d
commit c485104
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/mongo/util/concurrency/qlock.h b/src/mongo/util/concurrency/qlock.h
@@ -74,6 +74,7 @@ namespace mongo {
         void W_to_R();
         bool R_to_W(); // caution see notes below
         void runExclusively(void (*f)(void));
+        bool isGreeedSuspended();
     };
 
     inline bool QLock::i_block(char me, char them) {
@@ -278,5 +279,8 @@ namespace mongo {
         W.n--;
         notifyWeUnlocked('W');
     }
-
+    inline bool QLock::isGreeedSuspended() { 
+        boost::mutex::scoped_lock lk(m);
+        return greedSuspended != 0;
+    }
 }