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diff --git a/src/ceph/src/common/ceph_time.cc b/src/ceph/src/common/ceph_time.cc
new file mode 100644
index 0000000..be7c5f8
--- /dev/null
+++ b/src/ceph/src/common/ceph_time.cc
@@ -0,0 +1,129 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.	See file COPYING.
+ *
+ */
+
+// For ceph_timespec
+#include "ceph_time.h"
+#include "config.h"
+
+#if defined(DARWIN)
+int clock_gettime(int clk_id, struct timespec *tp)
+{
+  if (clk_id == CALENDAR_CLOCK) {
+    // gettimeofday is much faster than clock_get_time
+    struct timeval now;
+    int ret = gettimeofday(&now, NULL);
+    if (ret)
+      return ret;
+    tp->tv_sec = now.tv_sec;
+    tp->tv_nsec = now.tv_usec * 1000L;
+  } else {
+    clock_serv_t cclock;
+    mach_timespec_t mts;
+
+    host_get_clock_service(mach_host_self(), clk_id, &cclock);
+    clock_get_time(cclock, &mts);
+    mach_port_deallocate(mach_task_self(), cclock);
+
+    tp->tv_sec = mts.tv_sec;
+    tp->tv_nsec = mts.tv_nsec;
+  }
+  return 0;
+}
+#endif
+
+namespace ceph {
+  namespace time_detail {
+    void real_clock::to_ceph_timespec(const time_point& t,
+				      struct ceph_timespec& ts) {
+      ts.tv_sec = to_time_t(t);
+      ts.tv_nsec = (t.time_since_epoch() % seconds(1)).count();
+    }
+    struct ceph_timespec real_clock::to_ceph_timespec(const time_point& t) {
+      struct ceph_timespec ts;
+      to_ceph_timespec(t, ts);
+      return ts;
+    }
+    real_clock::time_point real_clock::from_ceph_timespec(
+      const struct ceph_timespec& ts) {
+      return time_point(seconds(ts.tv_sec) + nanoseconds(ts.tv_nsec));
+    }
+
+    void coarse_real_clock::to_ceph_timespec(const time_point& t,
+					     struct ceph_timespec& ts) {
+      ts.tv_sec = to_time_t(t);
+      ts.tv_nsec = (t.time_since_epoch() % seconds(1)).count();
+    }
+    struct ceph_timespec coarse_real_clock::to_ceph_timespec(
+      const time_point& t) {
+      struct ceph_timespec ts;
+      to_ceph_timespec(t, ts);
+      return ts;
+    }
+    coarse_real_clock::time_point coarse_real_clock::from_ceph_timespec(
+      const struct ceph_timespec& ts) {
+      return time_point(seconds(ts.tv_sec) + nanoseconds(ts.tv_nsec));
+    }
+  }
+
+  using std::chrono::duration_cast;
+  using std::chrono::seconds;
+  using std::chrono::microseconds;
+
+  template<typename Clock,
+	   typename std::enable_if<Clock::is_steady>::type*>
+  std::ostream& operator<<(std::ostream& m,
+			   const std::chrono::time_point<Clock>& t) {
+    return m << std::chrono::duration<double>(t.time_since_epoch()).count()
+	     << "s";
+  }
+
+  std::ostream& operator<<(std::ostream& m, const timespan& t) {
+    return m << std::chrono::duration<double>(t).count() << "s";
+  }
+
+  template<typename Clock,
+	   typename std::enable_if<!Clock::is_steady>::type*>
+  std::ostream& operator<<(std::ostream& m,
+			   const std::chrono::time_point<Clock>& t) {
+    m.setf(std::ios::right);
+    char oldfill = m.fill();
+    m.fill('0');
+    // localtime.  this looks like an absolute time.
+    //  aim for http://en.wikipedia.org/wiki/ISO_8601
+    struct tm bdt;
+    time_t tt = Clock::to_time_t(t);
+    localtime_r(&tt, &bdt);
+    m << std::setw(4) << (bdt.tm_year+1900)  // 2007 -> '07'
+      << '-' << std::setw(2) << (bdt.tm_mon+1)
+      << '-' << std::setw(2) << bdt.tm_mday
+      << ' '
+      << std::setw(2) << bdt.tm_hour
+      << ':' << std::setw(2) << bdt.tm_min
+      << ':' << std::setw(2) << bdt.tm_sec
+      << "." << std::setw(6) << duration_cast<microseconds>(
+	t.time_since_epoch() % seconds(1));
+    m.fill(oldfill);
+    m.unsetf(std::ios::right);
+    return m;
+  }
+
+  template std::ostream&
+  operator<< <mono_clock>(std::ostream& m, const mono_time& t);
+  template std::ostream&
+  operator<< <real_clock>(std::ostream& m, const real_time& t);
+  template std::ostream&
+  operator<< <coarse_mono_clock>(std::ostream& m, const coarse_mono_time& t);
+  template std::ostream&
+  operator<< <coarse_real_clock>(std::ostream& m, const coarse_real_time& t);
+}