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, 7 insertions, 0 deletions

diff --git a/src/mongo/logger/logstream_builder.h b/src/mongo/logger/logstream_builder.h
index 7c923d6ece3..638534484ee 100644
--- a/src/mongo/logger/logstream_builder.h
+++ b/src/mongo/logger/logstream_builder.h
@@ -35,6 +35,7 @@
 #include "mongo/logger/log_component.h"
 #include "mongo/logger/log_severity.h"
 #include "mongo/logger/message_log_domain.h"
+#include "mongo/stdx/chrono.h"
 #include "mongo/util/exit_code.h"
 
 namespace mongo {
@@ -130,6 +131,12 @@ namespace logger {
         LogstreamBuilder& operator<<(unsigned long long x) { stream() << x; return *this; }
         LogstreamBuilder& operator<<(bool x) { stream() << x; return *this; }
 
+        template <typename Rep, typename Period>
+        LogstreamBuilder& operator<<(stdx::chrono::duration<Rep, Period> d) {
+            stream() << d;
+            return *this;
+        }
+
         template <typename T>
         LogstreamBuilder& operator<<(const T& x) {
             stream() << x.toString();