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diff --git a/src/ceph/src/tools/rbd_mirror/Threads.cc b/src/ceph/src/tools/rbd_mirror/Threads.cc
new file mode 100644
index 0000000..45a6fdd
--- /dev/null
+++ b/src/ceph/src/tools/rbd_mirror/Threads.cc
@@ -0,0 +1,45 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "tools/rbd_mirror/Threads.h"
+#include "common/Timer.h"
+#include "common/WorkQueue.h"
+#include "librbd/ImageCtx.h"
+
+namespace rbd {
+namespace mirror {
+
+template <typename I>
+Threads<I>::Threads(CephContext *cct) : timer_lock("Threads::timer_lock") {
+  thread_pool = new ThreadPool(cct, "Journaler::thread_pool", "tp_journal",
+                               cct->_conf->get_val<int64_t>("rbd_op_threads"),
+                               "rbd_op_threads");
+  thread_pool->start();
+
+  work_queue = new ContextWQ("Journaler::work_queue",
+                             cct->_conf->get_val<int64_t>("rbd_op_thread_timeout"),
+                             thread_pool);
+
+  timer = new SafeTimer(cct, timer_lock, true);
+  timer->init();
+}
+
+template <typename I>
+Threads<I>::~Threads() {
+  {
+    Mutex::Locker timer_locker(timer_lock);
+    timer->shutdown();
+  }
+  delete timer;
+
+  work_queue->drain();
+  delete work_queue;
+
+  thread_pool->stop();
+  delete thread_pool;
+}
+
+} // namespace mirror
+} // namespace rbd
+
+template class rbd::mirror::Threads<librbd::ImageCtx>;