Verify that atomic duration time_point is lock free.

1 files changed, 6 insertions, 0 deletions

diff --git a/vespalib/src/tests/time/time_test.cpp b/vespalib/src/tests/time/time_test.cpp
index 95341219258..c1e73728485 100644
--- a/vespalib/src/tests/time/time_test.cpp
+++ b/vespalib/src/tests/time/time_test.cpp
@@ -4,6 +4,7 @@
 #include <vespa/vespalib/gtest/gtest.h>
 #include <cinttypes>
 #include <thread>
+#include <atomic>
 
 using namespace vespalib;
 
@@ -17,6 +18,11 @@ TEST(TimeTest, system_time_is_compatible_with_system_clock) {
     (void) t;
 }
 
+TEST(TimeTest, atomic_duration_is_lock_free) {
+    static_assert(std::atomic<duration>::is_always_lock_free, "std::atomic<duration> should be atomic");
+    static_assert(std::atomic<steady_time>::is_always_lock_free, "std::atomic<steady_time> should be atomic");
+}
+
 TEST(TimeTest, timer_can_measure_elapsed_time) {
     Timer timer;
     std::this_thread::sleep_for(10ms);