utils - add function that convert struct timeval to microseconds

Author: SiskaPavel

include/ipfixprobe/utils.hpp

@@ -145,5 +145,11 @@ T str2num(std::string str, typename std::enable_if<is_uint<T>()>::type * = nullp
    return static_cast<T>(tmp);
 }
 
+/**
+ * @brief Convert struct Timeval to microseconds
+ */
+uint64_t timeval2usec(const struct timeval& tv);
+
 }
-#endif /* IPXP_UTILS_HPP */
+
+#endif /* IPXP_UTILS_HPP */

utils.cpp

@@ -132,4 +132,10 @@ uint32_t variable2ipfix_buffer(uint8_t* buffer2write, uint8_t* buffer2read, uint
     return ptr + len;
 }
 
-} // namespace ipxp
+uint64_t timeval2usec(const struct timeval& tv)
+{
+   constexpr size_t usec_in_sec = 1000000;
+   return tv.tv_sec * usec_in_sec + tv.tv_usec;
+}
+
+} // namespace ipxp