Update copyright notice

[empserver] / src / lib / gen / queue.c

diff --git a/src/lib/gen/queue.c b/src/lib/gen/queue.c
index f3656bc55d2a0ce82b5952eac6d937f929198112..0212a44327a3092eceb3e60001002a127ba63041 100644 (file)
--- a/src/lib/gen/queue.c
+++ b/src/lib/gen/queue.c
@@ -1,6 +1,6 @@
 /*
  *  Empire - A multi-player, client/server Internet based war game.
- *  Copyright (C) 1986-2011, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *  Copyright (C) 1986-2020, Dave Pare, Jeff Bailey, Thomas Ruschak,
  *                Ken Stevens, Steve McClure, Markus Armbruster
  *
  *  Empire is free software: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
  *  queue.c: Various queue routines (for lists)
  *
  *  Known contributors to this file:
- *
+ *     Markus Armbruster, 2014
  */
 
 #include <config.h>
@@ -58,6 +58,17 @@ emp_remque(struct emp_qelem *elem)
        elem->q_back->q_forw = elem->q_forw;
 }
 
+int
+emp_quelen(struct emp_qelem *queue)
+{
+    struct emp_qelem *qp;
+    int len;
+
+    for (qp = queue->q_forw, len = 0; qp != queue; qp = qp->q_forw, len++)
+       ;
+    return len;
+}
+
 struct emp_qelem *
 emp_searchque(struct emp_qelem *queue, void *key,
              int (*test)(struct emp_qelem *, void *))