1 files changed, 34 insertions, 0 deletions
diff --git a/src/tools/rbd_mirror/image_replayer/TimeRollingMean.cc b/src/tools/rbd_mirror/image_replayer/TimeRollingMean.cc
new file mode 100644
index 000000000..5d9c9aca1
--- /dev/null
+++ b/src/tools/rbd_mirror/image_replayer/TimeRollingMean.cc
@@ -0,0 +1,34 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "tools/rbd_mirror/image_replayer/TimeRollingMean.h"
+#include "common/Clock.h"
+
+namespace rbd {
+namespace mirror {
+namespace image_replayer {
+
+void TimeRollingMean::operator()(uint32_t value) {
+  auto time = ceph_clock_now();
+  if (m_last_time.is_zero()) {
+    m_last_time = time;
+  } else if (m_last_time.sec() < time.sec()) {
+    auto sec = m_last_time.sec();
+    while (sec++ < time.sec()) {
+      m_rolling_mean(m_sum);
+      m_sum = 0;
+    }
+
+    m_last_time = time;
+  }
+
+  m_sum += value;
+}
+
+double TimeRollingMean::get_average() const {
+  return boost::accumulators::rolling_mean(m_rolling_mean);
+}
+
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd