1 files changed, 42 insertions, 0 deletions
diff --git a/include/mbgl/util/time.hpp b/include/mbgl/util/time.hpp
new file mode 100644
index 0000000000..eacee2c982
--- /dev/null
+++ b/include/mbgl/util/time.hpp
@@ -0,0 +1,42 @@
+#ifndef MBGL_UTIL_TIME
+#define MBGL_UTIL_TIME
+
+#include <uv.h>
+
+namespace mbgl {
+
+typedef uint64_t timestamp;
+
+namespace util {
+
+
+// Returns time in nanoseconds since an arbitrary point in the past. This has
+// no relation to the current time, but is continuously increasing, so
+// comparisons between different timestamps produce meaningful values.
+inline timestamp now() {
+    return uv_hrtime();
+}
+}
+
+// used for time conversions
+constexpr timestamp operator"" _nanoseconds (long double ns) { return ns; }
+constexpr timestamp operator"" _nanosecond (long double ns) { return ns; }
+constexpr timestamp operator"" _microseconds (long double us) { return us * 1e3; }
+constexpr timestamp operator"" _microsecond (long double us) { return us * 1e3; }
+constexpr timestamp operator"" _milliseconds (long double ms) { return ms * 1e6; }
+constexpr timestamp operator"" _millisecond (long double ms) { return ms * 1e6; }
+constexpr timestamp operator"" _seconds (long double s) { return s * 1e9; }
+constexpr timestamp operator"" _second (long double s) { return s * 1e9; }
+
+constexpr timestamp operator"" _nanoseconds (unsigned long long ns) { return ns; }
+constexpr timestamp operator"" _nanosecond (unsigned long long ns) { return ns; }
+constexpr timestamp operator"" _microseconds (unsigned long long us) { return us * 1e3; }
+constexpr timestamp operator"" _microsecond (unsigned long long us) { return us * 1e3; }
+constexpr timestamp operator"" _milliseconds (unsigned long long ms) { return ms * 1e6; }
+constexpr timestamp operator"" _millisecond (unsigned long long ms) { return ms * 1e6; }
+constexpr timestamp operator"" _seconds (unsigned long long s) { return s * 1e9; }
+constexpr timestamp operator"" _second (unsigned long long s) { return s * 1e9; }
+
+}
+
+#endif