4284     // heap is unparseable if they are caught. Grab the Heap_lock

  4284     // heap is unparseable if they are caught. Grab the Heap_lock

  4285     // to prevent this. The GC vm_operations will not be able to

  4285     // to prevent this. The GC vm_operations will not be able to

  4286     // queue until after the vm thread is dead. After this point,

  4286     // queue until after the vm thread is dead. After this point,

  4287     // we'll never emerge out of the safepoint before the VM exits.

  4287     // we'll never emerge out of the safepoint before the VM exits.

  4288 

  4288 

  4290 

  4290 

  4291     VMThread::wait_for_vm_thread_exit();

  4291     VMThread::wait_for_vm_thread_exit();

  4292     assert(SafepointSynchronize::is_at_safepoint(), "VM thread should exit at Safepoint");

  4292     assert(SafepointSynchronize::is_at_safepoint(), "VM thread should exit at Safepoint");

  4293     VMThread::destroy();

  4293     VMThread::destroy();

  4294   }

  4294   }