Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / src / chrono.cc

diff --git a/libstdc++-v3/src/chrono.cc b/libstdc++-v3/src/chrono.cc
new file mode 100644 (file)
index 0000000..f7640b0
--- /dev/null
+++ b/libstdc++-v3/src/chrono.cc
@@ -0,0 +1,79 @@
+// chrono -*- C++ -*-
+
+// Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+#include <chrono>
+
+#ifdef _GLIBCXX_USE_C99_STDINT_TR1
+
+// conditional inclusion of sys/time.h for gettimeofday
+#if !defined(_GLIBCXX_USE_CLOCK_MONOTONIC) && \
+    !defined(_GLIBCXX_USE_CLOCK_REALTIME) && \
+     defined(_GLIBCXX_USE_GETTIMEOFDAY)
+#include <sys/time.h>
+#endif
+
+namespace std
+{
+  namespace chrono
+  {
+    const bool system_clock::is_monotonic;
+
+    system_clock::time_point
+    system_clock::now()
+    {
+#ifdef _GLIBCXX_USE_CLOCK_REALTIME
+      timespec tp;
+      // -EINVAL, -EFAULT
+      clock_gettime(CLOCK_REALTIME, &tp);
+      return time_point(duration(chrono::seconds(tp.tv_sec)
+                                + chrono::nanoseconds(tp.tv_nsec)));
+#elif defined(_GLIBCXX_USE_GETTIMEOFDAY)
+      timeval tv;
+      // EINVAL, EFAULT
+      gettimeofday(&tv, NULL);
+      return time_point(duration(chrono::seconds(tv.tv_sec)
+                                + chrono::microseconds(tv.tv_usec)));
+#else
+      std::time_t __sec = std::time(0);
+      return system_clock::from_time_t(__sec);
+#endif
+    }
+    
+#ifdef _GLIBCXX_USE_CLOCK_MONOTONIC
+    const bool monotonic_clock::is_monotonic;
+    
+    monotonic_clock::time_point
+    monotonic_clock::now()
+    {
+      timespec tp;
+      // -EINVAL, -EFAULT
+      clock_gettime(CLOCK_MONOTONIC, &tp);
+      return time_point(duration(chrono::seconds(tp.tv_sec)
+                                + chrono::nanoseconds(tp.tv_nsec)));
+    }
+#endif
+  }
+}
+
+#endif // _GLIBCXX_USE_C99_STDINT_TR1