From 40646bea7c7d685bd642a07e7169c96c97500c02 Mon Sep 17 00:00:00 2001
From: "Frank Ch. Eigler" <fche@redhat.com>
Date: Tue, 30 Apr 2013 20:37:56 -0400
Subject: [PATCH] stapdyn: add a one-second timeout to the mutatee state-change
 ppoll

Intermittently, the filehandle-based notification hangs (with rawhide
dyninst 8.1.1 x86-64), but subsequent event polling works.  So let's
not let stapdyn block indefinitely on the former.

* stapdyn/mutator.cxx (mutator::run): Add a 10-second timeout.
---
 stapdyn/mutator.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/stapdyn/mutator.cxx b/stapdyn/mutator.cxx
index d3a600331..2265cf8ff 100644
--- a/stapdyn/mutator.cxx
+++ b/stapdyn/mutator.cxx
@@ -482,7 +482,9 @@ mutator::run ()
           pfd.events = POLLIN;
           pfd.revents = 0;
 
-          int rc = ppoll (&pfd, 1, NULL, &masked.old);
+          struct timespec timeout = { 10, 0 };
+
+          int rc = ppoll (&pfd, 1, &timeout, &masked.old);
           if (rc < 0 && errno != EINTR)
             break;
 
-- 
2.43.5