Initial implementation of the TimeValue abstraction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16511 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 37 insertions, 0 deletions

diff --git a/lib/System/Linux/TimeValue.cpp b/lib/System/Linux/TimeValue.cpp
new file mode 100644
index 0000000000..e6fad14ff5
--- /dev/null
+++ b/lib/System/Linux/TimeValue.cpp
@@ -0,0 +1,37 @@
+//===- Linux/TimeValue.cpp - Linux TimeValue Implementation -----*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Reid Spencer and is distributed under the 
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// This file provides the Linux specific implementation of the TimeValue class.
+//
+//===----------------------------------------------------------------------===//
+
+// Include the generic Unix implementation
+#include "../Unix/Unix.h"
+#include <sys/time.h>
+
+namespace llvm {
+using namespace sys;
+
+//===----------------------------------------------------------------------===//
+//=== WARNING: Implementation here must contain only Linux specific code 
+//===          and must not be generic UNIX code (see ../Unix/TimeValue.cpp)
+//===----------------------------------------------------------------------===//
+
+void TimeValue::now() {
+  struct timeval the_time;
+  timerclear(&the_time);
+  if (0 != ::gettimeofday(&the_time,0)) 
+      ThrowErrno("Couldn't obtain time of day");
+
+  this->set( 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
+
+}