SERVER-13874 Make mongo::Milliseconds et al. aliases for equivalent stdx::chrono types.

Also introduces operators for adding stdx::chrono::duration to Date_t,
subtracting two Date_ts to get Milliseconds, and remove the use of
reinterpret_cast from the implementation of BSON Timestamp type.

1 files changed, 4 insertions, 7 deletions

diff --git a/src/mongo/db/auth/user_cache_invalidator_job.cpp b/src/mongo/db/auth/user_cache_invalidator_job.cpp
index 7669d0201bc..f6a17cba04a 100644
--- a/src/mongo/db/auth/user_cache_invalidator_job.cpp
+++ b/src/mongo/db/auth/user_cache_invalidator_job.cpp
@@ -138,14 +138,11 @@ namespace {
 
         while (true) {
             boost::unique_lock<boost::mutex> lock(invalidationIntervalMutex);
-            Date_t sleepUntil = Date_t(
-                    lastInvalidationTime.millis + userCacheInvalidationIntervalSecs * 1000);
+            Date_t sleepUntil = lastInvalidationTime + Seconds(userCacheInvalidationIntervalSecs);
             Date_t now(curTimeMillis64());
-            while (now.millis < sleepUntil.millis) {
-                invalidationIntervalChangedCondition.timed_wait(lock,
-                                                                Milliseconds(sleepUntil - now));
-                sleepUntil = Date_t(
-                        lastInvalidationTime.millis + (userCacheInvalidationIntervalSecs * 1000));
+            while (now < sleepUntil) {
+                invalidationIntervalChangedCondition.wait_for(lock, sleepUntil - now);
+                sleepUntil = lastInvalidationTime + Seconds(userCacheInvalidationIntervalSecs);
                 now = Date_t(curTimeMillis64());
             }
             lastInvalidationTime = now;