From c378e5b330530ab716a1743a66d6ec9f4a2464f9 Mon Sep 17 00:00:00 2001
From: Pierre-Marc Fournier <pierre-marc.fournier@polymtl.ca>
Date: Tue, 13 Oct 2009 17:13:49 -0400
Subject: [PATCH] set the reader side of the buffer-ready pipe non-blocking
 (experimental)

---
 libust/relay.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libust/relay.c b/libust/relay.c
index 3259ade..a31cdf7 100644
--- a/libust/relay.c
+++ b/libust/relay.c
@@ -26,6 +26,7 @@
 #include <sys/mman.h>
 #include <sys/ipc.h>
 #include <sys/shm.h>
+#include <fcntl.h>
 //#include "list.h"
 #include "relay.h"
 #include "channels.h"
@@ -1503,6 +1504,12 @@ static int ltt_relay_create_buffer(struct ltt_trace_struct *trace,
 	ltt_buf->data_ready_fd_read = fds[0];
 	ltt_buf->data_ready_fd_write = fds[1];
 
+	/* FIXME: do we actually need this? */
+	result = fcntl(fds[0], F_SETFL, O_NONBLOCK);
+	if(result == -1) {
+		PERROR("fcntl");
+	}
+
 //ust//	ltt_buf->commit_seq = malloc(sizeof(ltt_buf->commit_seq) * n_subbufs);
 //ust//	if(!ltt_buf->commit_seq) {
 //ust//		return -1;
-- 
2.34.1