Use std::chrono.

4 files changed, 15 insertions, 2 deletions

diff --git a/vespalib/src/vespa/vespalib/testkit/test_comparators.cpp b/vespalib/src/vespa/vespalib/testkit/test_comparators.cpp
index d00ad8d954c..b30b3aaa421 100644
--- a/vespalib/src/vespa/vespalib/testkit/test_comparators.cpp
+++ b/vespalib/src/vespa/vespalib/testkit/test_comparators.cpp
@@ -8,7 +8,11 @@ ostream & operator << (ostream & os, system_clock::time_point ts) {
     return os << ts.time_since_epoch() << "ns";
 }
 
+ostream & operator << (ostream & os, steady_clock::time_point ts) {
+    return os << ts.time_since_epoch() << "ns";
+}
+
 }
 namespace vespalib {
 
-} // namespace vespalib
+}
\ No newline at end of file
diff --git a/vespalib/src/vespa/vespalib/testkit/test_comparators.h b/vespalib/src/vespa/vespalib/testkit/test_comparators.h
index 161c125757b..164e486cf4a 100644
--- a/vespalib/src/vespa/vespalib/testkit/test_comparators.h
+++ b/vespalib/src/vespa/vespalib/testkit/test_comparators.h
@@ -14,7 +14,7 @@ ostream & operator << (ostream & os, duration<rep, period> ts) {
 }
 
 ostream & operator << (ostream & os, system_clock::time_point ts);
-
+ostream & operator << (ostream & os, steady_clock::time_point ts);
 
 }
 
diff --git a/vespalib/src/vespa/vespalib/util/time.cpp b/vespalib/src/vespa/vespalib/util/time.cpp
index d38e40a6d6a..fdd13849287 100644
--- a/vespalib/src/vespa/vespalib/util/time.cpp
+++ b/vespalib/src/vespa/vespalib/util/time.cpp
@@ -4,6 +4,13 @@
 
 namespace vespalib {
 
+system_time
+to_utc(steady_time ts) {
+    system_clock::time_point nowUtc = system_clock::now();
+    steady_time nowSteady = steady_clock::now();
+    return system_time(nowUtc.time_since_epoch() - nowSteady.time_since_epoch() + ts.time_since_epoch());
+}
+
 Timer::~Timer() = default;
 
 }
diff --git a/vespalib/src/vespa/vespalib/util/time.h b/vespalib/src/vespa/vespalib/util/time.h
index a3390114bb1..3111239ffab 100644
--- a/vespalib/src/vespa/vespalib/util/time.h
+++ b/vespalib/src/vespa/vespalib/util/time.h
@@ -39,6 +39,8 @@ constexpr double to_s(duration d) {
     return std::chrono::duration_cast<std::chrono::duration<double>>(d).count();
 }
 
+system_time to_utc(steady_time ts);
+
 constexpr duration from_s(double seconds) {
     return std::chrono::duration_cast<duration>(std::chrono::duration<double>(seconds));
 }