src/hotspot/share/runtime/handshake.cpp

rev 52283 : [mq]: 8212933
rev 52284 : 8212933: Thread-SMR: requesting a VM operation whilst holding a ThreadsListHandle can cause deadlocks
Reviewed-by: eosterlund, dcubed, sspitsyn

*** 355,364 ****
--- 355,366 ----
    return false;
  }
  
  void HandshakeState::process_by_vmthread(JavaThread* target) {
    assert(Thread::current()->is_VM_thread(), "should call from vm thread");
+   // Threads_lock must be held here, but that is assert()ed in
+   // possibly_vmthread_can_process_handshake().
  
    if (!has_operation()) {
      // JT has already cleared its handshake
      return;
    }