[Commit-gnuradio] [gnuradio] 16/18: runtime: poll blocks

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commit 85204abccbf9fe804f3de638366d4783cb95b7de
Author: Bastian Bloessl <address@hidden>
Date:   Thu Jun 30 13:09:41 2016 +0200

    runtime: poll blocks
---
 gnuradio-runtime/lib/tpb_thread_body.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gnuradio-runtime/lib/tpb_thread_body.cc 
b/gnuradio-runtime/lib/tpb_thread_body.cc
index 6112381..32c846d 100644
--- a/gnuradio-runtime/lib/tpb_thread_body.cc
+++ b/gnuradio-runtime/lib/tpb_thread_body.cc
@@ -155,8 +155,10 @@ namespace gr {
       case block_executor::BLKD_IN:            // Wait for input.
       {
         gr::thread::scoped_lock guard(d->d_tpb.mutex);
-        while(!d->d_tpb.input_changed) {
-          d->d_tpb.input_cond.wait(guard);
+
+        if(!d->d_tpb.input_changed) {
+          boost::system_time const timeout=boost::get_system_time()+ 
boost::posix_time::milliseconds(250);
+          d->d_tpb.input_cond.timed_wait(guard, timeout);
         }
       }
       break;