Fixed race when iterating Thread list.

rubinius · Jan 1, 2016 · b3a25c5 · b3a25c5
1 parent d43ae9c
commit b3a25c5
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/vm/thread_nexus.cpp b/vm/thread_nexus.cpp
@@ -132,6 +132,8 @@ namespace rubinius {
 #define RBX_MAX_STOP_ITERATIONS 10000
 
   bool ThreadNexus::locking(VM* vm) {
+    utilities::thread::SpinLock::LockGuard guard(threads_lock_);
+
     timer::StopWatch<timer::nanoseconds> timer(
         vm->metrics().lock.stop_the_world_ns);