Fix: ust metadata: resample clock on regenerate metadata

[lttng-tools.git] / src / bin / lttng-sessiond / ust-registry-session.cpp

diff --git a/src/bin/lttng-sessiond/ust-registry-session.cpp b/src/bin/lttng-sessiond/ust-registry-session.cpp
index 5bb8e6094e43726d93f7dc503e3a66dd39415de8..eced786e0446836f54ffbadf47a0607f5eb04775 100644 (file)
--- a/src/bin/lttng-sessiond/ust-registry-session.cpp
+++ b/src/bin/lttng-sessiond/ust-registry-session.cpp
@@ -246,6 +246,7 @@ lsu::registry_session::registry_session(const struct lst::abi& in_abi,
        _gid{egid},
        _app_tracer_version{.major = major, .minor = minor},
        _tracing_id{tracing_id},
+       _clock{lttng::make_unique<lsu::clock_class>()},
        _metadata_generating_visitor{lttng::make_unique<ls::tsdl::trace_class_visitor>(abi,
                        [this](const std::string& fragment) {
                                _append_metadata_fragment(fragment);
@@ -487,7 +488,7 @@ void lsu::registry_session::_visit_environment(
 void lsu::registry_session::_accept_on_clock_classes(lst::trace_class_visitor& visitor) const
 {
        ASSERT_LOCKED(_lock);
-       _clock.accept(visitor);
+       _clock->accept(visitor);
 }
 
 void lsu::registry_session::_accept_on_stream_classes(lst::trace_class_visitor& visitor) const
@@ -613,6 +614,9 @@ void lsu::registry_session::regenerate_metadata()
 {
        lttng::pthread::lock_guard registry_lock(_lock);
 
+       /* Resample the clock */
+       _clock = lttng::make_unique<lsu::clock_class>();
+
        _metadata_version++;
        _reset_metadata();
        _generate_metadata();