6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")

6723229: NUMA allocator: assert(lgrp_num > 0, "There should be at least one locality group")

The fix takes care of the assertion triggered during TLAB resizing after reconfiguration. Also it now handles a defect in the topology graph, in which a single leaf node doesn't have memory.

Reviewed-by: jmasa

hotspot/src/os/solaris/vm/os_solaris.cpp

@@ -2658,6 +2658,12 @@ size_t os::numa_get_leaf_groups(int *ids, size_t size) {
      top += r;
      cur++;
    }
+   if (bottom == 0) {
+     // Handle a situation, when the OS reports no memory available.
+     // Assume UMA architecture.
+     ids[0] = 0;
+     return 1;
+   }
    return bottom;
 }