From 06eae17d656fd281e05ca28d4e38696fc05d2dbf Mon Sep 17 00:00:00 2001
From: Henning Baldersheim <balder@yahoo-inc.com>
Date: Mon, 16 Dec 2019 22:55:04 -0600
Subject: Revert "Revert "Balder/remove steadytimestamp 2""

---
 vespalib/src/tests/time/time_test.cpp                    | 10 ++++++++++
 vespalib/src/vespa/vespalib/testkit/test_comparators.cpp |  6 +++++-
 vespalib/src/vespa/vespalib/testkit/test_comparators.h   |  2 +-
 vespalib/src/vespa/vespalib/util/time.cpp                |  7 +++++++
 vespalib/src/vespa/vespalib/util/time.h                  |  6 ++++++
 5 files changed, 29 insertions(+), 2 deletions(-)

(limited to 'vespalib')

diff --git a/vespalib/src/tests/time/time_test.cpp b/vespalib/src/tests/time/time_test.cpp
index 667511f6a94..40542b6ca62 100644
--- a/vespalib/src/tests/time/time_test.cpp
+++ b/vespalib/src/tests/time/time_test.cpp
@@ -29,6 +29,16 @@ TEST(TimeTest, double_conversion_works_as_expected) {
     EXPECT_EQ(10ms, from_s(0.010));
 }
 
+TEST(TimeTest, timeval_conversion_works_as_expected) {
+    timeval tv1;
+    tv1.tv_sec = 7;
+    tv1.tv_usec = 342356;
+    EXPECT_EQ(from_timeval(tv1), 7342356us);
+    tv1.tv_sec = 7;
+    tv1.tv_usec = 1342356;
+    EXPECT_EQ(from_timeval(tv1), 8342356us);
+}
+
 TEST(TimeTest, unit_counting_works_as_expected) {
     auto d = 3ms + 5us + 7ns;
     EXPECT_EQ(count_ns(d), 3005007);
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 2f8ae0ae016..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));
 }
@@ -55,6 +57,10 @@ constexpr int64_t count_ns(duration d) {
     return std::chrono::duration_cast<std::chrono::nanoseconds>(d).count();
 }
 
+constexpr duration from_timeval(const timeval & tv) {
+    return duration(tv.tv_sec*1000000000L + tv.tv_usec*1000L);
+}
+
 /**
  * Simple utility class used to measure how much time has elapsed
  * since it was constructed.
-- 
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