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, 9 deletions

diff --git a/src/mongo/bson/bsonobjbuilder.cpp b/src/mongo/bson/bsonobjbuilder.cpp
index d0fd2665ff3..a9878b28adc 100644
--- a/src/mongo/bson/bsonobjbuilder.cpp
+++ b/src/mongo/bson/bsonobjbuilder.cpp
@@ -109,7 +109,9 @@ namespace mongo {
         case String:
             appendMinForType( fieldName, Object ); return;
         case Date:
-            appendDate( fieldName , std::numeric_limits<long long>::max() ); return;
+            appendDate(fieldName,
+                       Date_t::fromMillisSinceEpoch(std::numeric_limits<long long>::max()));
+            return;
         case bsonTimestamp:
             append( fieldName , Timestamp::max() ); return;
         case Undefined: // shared with EOO
@@ -196,16 +198,9 @@ namespace mongo {
     }
 
     BSONObjBuilder& BSONObjBuilder::appendDate(StringData fieldName, Date_t dt) {
-        /* easy to pass a time_t to this and get a bad result.  thus this warning. */
-        if ( kDebugBuild && dt > 0 && dt <= 0xffffffff ) {
-            static int n;
-            if( n++ == 0 )
-                log() << "DEV WARNING appendDate() called with a tiny (but nonzero) date" << std::endl;
-        }
-
         _b.appendNum((char) Date);
         _b.appendStr(fieldName);
-        _b.appendNum(dt);
+        _b.appendNum(dt.toMillisSinceEpoch());
         return *this;
     }