Merge pull request #12990 from vespa-engine/revert-12988-balder/use-system-independent-xxx_clock

Revert "There are so many combinations that the libstdc++ library can be buil…"

1 files changed, 0 insertions, 26 deletions

diff --git a/vespalib/src/vespa/vespalib/util/time.cpp b/vespalib/src/vespa/vespalib/util/time.cpp
index 2e8f4e7e30e..46cf4806dfc 100644
--- a/vespalib/src/vespa/vespalib/util/time.cpp
+++ b/vespalib/src/vespa/vespalib/util/time.cpp
@@ -52,29 +52,3 @@ Timer::waitAtLeast(duration dur, bool busyWait) {
 }
 
 }
-
-namespace std::chrono {
-
-// This is a hack to avoid the slow clock computations on RHEL7/CentOS 7 due to using systemcalls.
-// This brings cost down from 550-560ns to 18-19ns
-
-inline namespace _V2 {
-
-system_clock::time_point
-system_clock::now() noexcept {
-    timespec tp;
-    clock_gettime(CLOCK_REALTIME, &tp);
-    return time_point(duration(chrono::seconds(tp.tv_sec)
-                               + chrono::nanoseconds(tp.tv_nsec)));
-}
-
-steady_clock::time_point
-steady_clock::now() noexcept {
-    timespec tp;
-    clock_gettime(CLOCK_MONOTONIC, &tp);
-    return time_point(duration(chrono::seconds(tp.tv_sec)
-                               + chrono::nanoseconds(tp.tv_nsec)));
-}
-
-}
-}