From c9ea7fb88809d935f3eaeee108415ff5abd17ead Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Fri, 5 Jun 2015 09:10:52 +0200
Subject: Set priorities for modulator and UHD threads

---
 src/DabMod.cpp    |  9 +++++++++
 src/OutputUHD.cpp | 14 ++++++++++----
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/DabMod.cpp b/src/DabMod.cpp
index 2fe8d53..57f03b9 100644
--- a/src/DabMod.cpp
+++ b/src/DabMod.cpp
@@ -768,6 +768,15 @@ int launch_modulator(int argc, char* argv[])
     }
 #endif
 
+    // Set thread priority to realtime
+    const int policy = SCHED_RR;
+    sched_param sp;
+    sp.sched_priority = sched_get_priority_min(policy);
+    int thread_prio_ret = pthread_setschedparam(pthread_self(), policy, &sp);
+    if (thread_prio_ret != 0) {
+        etiLog.level(error) << "Could not set priority for Modulator thread:" << thread_prio_ret;
+    }
+
 
     while (run_again) {
         Flowgraph flowgraph;
diff --git a/src/OutputUHD.cpp b/src/OutputUHD.cpp
index 28df515..ad31be7 100644
--- a/src/OutputUHD.cpp
+++ b/src/OutputUHD.cpp
@@ -104,12 +104,8 @@ OutputUHD::OutputUHD(
     RC_ADD_PARAMETER(muting, "Mute the output by stopping the transmitter");
     RC_ADD_PARAMETER(staticdelay, "Set static delay (uS) between 0 and 96000");
 
-    // TODO: find out how to use boost::bind to give the logger to the
-    // uhd_msg_handler
     uhd::msg::register_handler(uhd_msg_handler);
 
-    uhd::set_thread_priority_safe();
-
     //create a usrp device
     MDEBUG("OutputUHD:Creating the usrp device with: %s...\n",
             device.str().c_str());
@@ -477,6 +473,16 @@ void UHDWorker::process()
     // Transmit timeout
     const double timeout = 20.0;
 
+    // Set thread priority to realtime
+    const int policy = SCHED_RR;
+    sched_param sp;
+    sp.sched_priority = sched_get_priority_min(policy);
+    int ret = pthread_setschedparam(pthread_self(), policy, &sp);
+    if (ret != 0) {
+        etiLog.level(error) << "Could not set priority for UHD thread:" << ret;
+    }
+
+
 #if FAKE_UHD == 0
     uhd::stream_args_t stream_args("fc32"); //complex floats
     uhd::tx_streamer::sptr myTxStream = uwd->myUsrp->get_tx_stream(stream_args);
-- 
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