Add simple time functions

Makefile.am

@@ -31,6 +31,7 @@ UTIL_INCLUDE =  \
     stream.hpp		\
     string.hpp		\
     si.hpp		\
+    time.hpp		\
     types.hpp		\
     vector.hpp  	\
     version.hpp
@@ -56,6 +57,7 @@ UTIL_FILES   =		\
     stream.cpp		\
     string.cpp		\
     si.cpp		\
+    time.cpp		\
     types.cpp		\
     vector.cpp  	\
     version.cpp

time.cpp

@@ -0,0 +1,33 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim 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 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2010 Danny Robson <danny@blubinc.net>
+ */
+
+#include "time.hpp"
+
+#include <ctime>
+
+using namespace util;
+
+
+uint64_t
+util::nanoseconds (void) {
+    struct timespec t;
+    clock_gettime (CLOCK_REALTIME, &t);
+
+    return t.tv_sec * 1000000000 + t.tv_nsec;
+}

time.hpp

@@ -0,0 +1,29 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim 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 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2010 Danny Robson <danny@blubinc.net>
+ */
+
+#ifndef __UTIL_TIME_HPP
+#define __UTIL_TIME_HPP
+
+#include <cstdint>
+
+namespace util {
+    uint64_t nanoseconds (void);
+}
+
+#endif // __UTIL_TIME_HPP