1 files changed, 44 insertions, 0 deletions
diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
index 50ef8976bed..6ff7385233e 100644
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -1286,6 +1286,50 @@ GetCurrentTimestamp(void)
 }
 
 /*
+ * GetCurrentIntegerTimestamp -- get the current operating system time as int64
+ *
+ * Result is the number of milliseconds since the Postgres epoch. If compiled
+ * with --enable-integer-datetimes, this is identical to GetCurrentTimestamp(),
+ * and is implemented as a macro.
+ */
+#ifndef HAVE_INT64_TIMESTAMP
+int64
+GetCurrentIntegerTimestamp(void)
+{
+	int64 result;
+	struct timeval tp;
+
+	gettimeofday(&tp, NULL);
+
+	result = (int64) tp.tv_sec -
+		((POSTGRES_EPOCH_JDATE - UNIX_EPOCH_JDATE) * SECS_PER_DAY);
+
+	result = (result * USECS_PER_SEC) + tp.tv_usec;
+
+	return result;
+}
+#endif
+
+/*
+ * IntegetTimestampToTimestampTz -- convert an int64 timestamp to native format
+ *
+ * When compiled with --enable-integer-datetimes, this is implemented as a
+ * no-op macro.
+ */
+#ifndef HAVE_INT64_TIMESTAMP
+TimestampTz
+IntegerTimestampToTimestampTz(int64 timestamp)
+{
+	TimestampTz result;
+
+	result = timestamp / USECS_PER_SEC;
+	result += (timestamp % USECS_PER_SEC) / 1000000.0;
+
+	return result;
+}
+#endif
+
+/*
  * TimestampDifference -- convert the difference between two timestamps
  *		into integer seconds and microseconds
  *