From ca6417739de4e5344325e96887dcdbf8311e265b Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Tue, 15 Jun 2010 15:06:18 -0700 Subject: uhd: added ability to boost rt priority, added general app notes --- host/lib/sched.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 host/lib/sched.cpp (limited to 'host/lib/sched.cpp') diff --git a/host/lib/sched.cpp b/host/lib/sched.cpp new file mode 100644 index 000000000..712014c9c --- /dev/null +++ b/host/lib/sched.cpp @@ -0,0 +1,45 @@ +// +// Copyright 2010 Ettus Research LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// + +#include +#include +#include + +#ifdef HAVE_SCHED_H +#include + +/* + * # /etc/security/limits.conf +# +@usrp - rtprio 99 +*/ + +UHD_STATIC_BLOCK(setup_process_sched){ + try{ + int policy = SCHED_RR; + int max_pri = sched_get_priority_max(policy); + if (max_pri == -1) throw std::runtime_error("sched_get_priority_max with SCHED_RR failed"); + sched_param sp; sp.sched_priority = max_pri; + int ss_ret = sched_setscheduler(0, policy, &sp); + if (ss_ret == -1) throw std::runtime_error("sched_setscheduler with SCHED_RR failed"); + } + catch(const std::exception &e){ + std::cerr << "Process scheduling error: " << e.what() << std::endl; + } +} + +#endif /* HAVE_SCHED_H */ -- cgit v1.2.3