Merge System into Support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/Support/Unix/TimeValue.inc b/lib/Support/Unix/TimeValue.inc
new file mode 100644
index 0000000000..5cf5a9d44e
--- /dev/null
+++ b/lib/Support/Unix/TimeValue.inc
@@ -0,0 +1,56 @@
+//===- Unix/TimeValue.cpp - Unix TimeValue Implementation -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Unix specific portion of the TimeValue class.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+//=== WARNING: Implementation here must contain only generic UNIX code that
+//===          is guaranteed to work on *all* UNIX variants.
+//===----------------------------------------------------------------------===//
+
+#include "Unix.h"
+
+namespace llvm {
+  using namespace sys;
+
+std::string TimeValue::str() const {
+  char buffer[32];
+
+  time_t ourTime = time_t(this->toEpochTime());
+#ifdef __hpux
+// note that the following line needs -D_REENTRANT on HP-UX to be picked up
+  asctime_r(localtime(&ourTime), buffer);
+#else
+  ::asctime_r(::localtime(&ourTime), buffer);
+#endif
+
+  std::string result(buffer);
+  return result.substr(0,24);
+}
+
+TimeValue TimeValue::now() {
+  struct timeval the_time;
+  timerclear(&the_time);
+  if (0 != ::gettimeofday(&the_time,0)) {
+    // This is *really* unlikely to occur because the only gettimeofday
+    // errors concern the timezone parameter which we're passing in as 0.
+    // In the unlikely case it does happen, just return MinTime, no error
+    // message needed.
+    return MinTime;
+  }
+
+  return TimeValue(
+    static_cast<TimeValue::SecondsType>( the_time.tv_sec + PosixZeroTime.seconds_ ),
+    static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec *
+      NANOSECONDS_PER_MICROSECOND ) );
+}
+
+}