Generation numbers to catch write back of stale copies

[empserver] / include / plane.h

diff --git a/include/plane.h b/include/plane.h
index 8e37d0d2b784840ee25c3672b0127ccc4d1c35b1..5e809e2dff03d57c605ad9480af3881146479d8f 100644 (file)
--- a/include/plane.h
+++ b/include/plane.h
@@ -49,6 +49,7 @@ struct plnstr {
     short ef_type;
     short pln_uid;             /* plane unit id */
     unsigned pln_seqno;
+    unsigned pln_generation;
     time_t pln_timestamp;      /* Last time this plane was touched */
     natid pln_own;             /* owning country */
     coord pln_x;               /* plane x-y */