From 7e120e33881a13d870e2ee299ec426edb1aeb29b Mon Sep 17 00:00:00 2001
From: Andrew Johnson <anj@aps.anl.gov>
Date: Wed, 25 Jun 2008 16:49:13 +0000
Subject: [PATCH] Don't register the hook more than once.

---
 src/makeBaseApp/top/exampleApp/src/initTrace.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/makeBaseApp/top/exampleApp/src/initTrace.c b/src/makeBaseApp/top/exampleApp/src/initTrace.c
index 48d8c8319..50bc8e8c7 100644
--- a/src/makeBaseApp/top/exampleApp/src/initTrace.c
+++ b/src/makeBaseApp/top/exampleApp/src/initTrace.c
@@ -17,6 +17,11 @@ static void trace(initHookState state) {
 }
 
 int traceIocInit(void) {
+    static int done = 0;
+    if (done)
+        return -1;
+    done = 1;
+
     initHookRegister(trace);
     puts("iocInit will be traced");
     return 0;