uhd: Moved get_system_time outside of public API

uhd::get_system_time() is an abstracted way of reading back a time, and
is not UHD-specific. As such, there's no reason to keep it in the public
part of the API where we're contractually obligated not to touch it.
Instead, moving it to the internal API space.

1 files changed, 32 insertions, 0 deletions

diff --git a/host/tests/system_time_test.cpp b/host/tests/system_time_test.cpp
new file mode 100644
index 000000000..165bcf3aa
--- /dev/null
+++ b/host/tests/system_time_test.cpp
@@ -0,0 +1,32 @@
+//
+// Copyright 2017 Ettus Research (National Instruments Corp.)
+//
+// SPDX-License-Identifier: GPL-3.0+
+//
+
+#include <boost/test/unit_test.hpp>
+#include <uhd/types/time_spec.hpp>
+#include "system_time.hpp"
+#include <iostream>
+#include <iomanip>
+#include <cstdint>
+#include <chrono>
+
+BOOST_AUTO_TEST_CASE(test_time_spec_get_system_time){
+    std::cout << "Testing time specification get system time..." << std::endl;
+
+    //Not really checking for high resolution timing here,
+    //just need to check that system time is minimally working.
+
+    auto start = uhd::get_system_time();
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    auto stop = uhd::get_system_time();
+
+    auto diff = stop - start;
+    std::cout << "start: " << start.get_real_secs() << std::endl;
+    std::cout << "stop: " << stop.get_real_secs() << std::endl;
+    std::cout << "diff: " << diff.get_real_secs() << std::endl;
+    BOOST_CHECK(diff.get_real_secs() > 0); //assert positive
+    BOOST_CHECK(diff.get_real_secs() < 1.0); //assert under 1s
+}
+