Initial implementation of the TimeValue abstraction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16511 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/TimeValue.cpp b/lib/System/TimeValue.cpp
new file mode 100644
index 0000000..68778a5
--- /dev/null
+++ b/lib/System/TimeValue.cpp
@@ -0,0 +1,53 @@
+//===-- TimeValue.cpp - Implement OS TimeValue Concept ----------*- 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 implements the operating system TimeValue concept.
+//
+//===----------------------------------------------------------------------===//
+
+#include <llvm/System/TimeValue.h>
+
+namespace llvm {
+using namespace sys;
+
+const TimeValue TimeValue::MinTime = TimeValue ( INT64_MIN,0 );
+const TimeValue TimeValue::MaxTime = TimeValue ( INT64_MAX,0 );
+const TimeValue TimeValue::ZeroTime = TimeValue ( 0,0 );
+const TimeValue TimeValue::PosixZeroTime = TimeValue ( -946684800,0 );
+const TimeValue TimeValue::Win32ZeroTime = TimeValue ( -12591158400ULL,0 );
+
+void
+TimeValue::normalize( void ) {
+ if ( nanos_ >= NANOSECONDS_PER_SECOND ) {
+ do {
+ seconds_++;
+ nanos_ -= NANOSECONDS_PER_SECOND;
+ } while ( nanos_ >= NANOSECONDS_PER_SECOND );
+ } else if (nanos_ <= -NANOSECONDS_PER_SECOND ) {
+ do {
+ seconds_--;
+ nanos_ += NANOSECONDS_PER_SECOND;
+ } while (nanos_ <= -NANOSECONDS_PER_SECOND);
+ }
+
+ if (seconds_ >= 1 && nanos_ < 0) {
+ seconds_--;
+ nanos_ += NANOSECONDS_PER_SECOND;
+ } else if (seconds_ < 0 && nanos_ > 0) {
+ seconds_++;
+ nanos_ -= NANOSECONDS_PER_SECOND;
+ }
+}
+
+}
+
+/// Include the platform specific portion of TimeValue class
+#include "platform/TimeValue.cpp"
+
+// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab