Consolidate the implementation of TimeValue::now() for Unix to use the
seemingly ubiquitous gettimeofday(3) call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17813 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Unix/TimeValue.cpp b/lib/System/Unix/TimeValue.cpp
index f029f8d..6b476c8 100644
--- a/lib/System/Unix/TimeValue.cpp
+++ b/lib/System/Unix/TimeValue.cpp
@@ -19,6 +19,7 @@
 #include "Unix.h"
 
 #include <time.h>
+#include <sys/time.h>
 
 namespace llvm {
   using namespace sys;
@@ -34,5 +35,17 @@
   return result.substr(0,24);
 }
 
+TimeValue TimeValue::now() {
+  struct timeval the_time;
+  ::timerclear(&the_time);
+  if (0 != ::gettimeofday(&the_time,0)) 
+    ThrowErrno("Couldn't obtain time of day");
+
+  return TimeValue(
+    static_cast<TimeValue::SecondsType>( the_time.tv_sec ), 
+    static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec * 
+      NANOSECONDS_PER_MICROSECOND ) );
+}
+
 }
 // vim: sw=2 smartindent smarttab tw=80 autoindent expandtab