Line data    Source code

       1             : // Copyright (c) 2012-2021  Made to Order Software Corp.  All Rights Reserved
       2             : //
       3             : // https://snapwebsites.org/project/eventdispatcher
       4             : // contact@m2osw.com
       5             : //
       6             : // This program is free software; you can redistribute it and/or modify
       7             : // it under the terms of the GNU General Public License as published by
       8             : // the Free Software Foundation; either version 2 of the License, or
       9             : // (at your option) any later version.
      10             : //
      11             : // This program is distributed in the hope that it will be useful,
      12             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14             : // GNU General Public License for more details.
      15             : //
      16             : // You should have received a copy of the GNU General Public License
      17             : // along with this program; if not, write to the Free Software
      18             : // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
      19             : 
      20             : /** \file
      21             :  * \brief Various helper functions.
      22             :  *
      23             :  * These functions are useful for our event dispatcher environment.
      24             :  */
      25             : 
      26             : 
      27             : // self
      28             : //
      29             : #include    "eventdispatcher/utils.h"
      30             : 
      31             : #include    "eventdispatcher/exception.h"
      32             : 
      33             : 
      34             : // snaplogger lib
      35             : //
      36             : #include    <snaplogger/message.h>
      37             : 
      38             : 
      39             : // snapdev lib
      40             : //
      41             : #include    <snapdev/not_reached.h>
      42             : 
      43             : 
      44             : // C++ lib
      45             : //
      46             : #include    <cstring>
      47             : 
      48             : 
      49             : // last include
      50             : //
      51             : #include    <snapdev/poison.h>
      52             : 
      53             : 
      54             : 
      55             : namespace ed
      56             : {
      57             : 
      58             : 
      59             : 
      60             : /** \brief Get the current date.
      61             :  *
      62             :  * This function retrieves the current date and time with a precision
      63             :  * of microseconds.
      64             :  *
      65             :  * \todo
      66             :  * This is also defined in snap_child::get_current_date() so we should
      67             :  * unify that in some way...
      68             :  *
      69             :  * \return The time in microseconds.
      70             :  */
      71          10 : std::int64_t get_current_date()
      72             : {
      73          10 :     timeval tv;
      74          10 :     if(gettimeofday(&tv, nullptr) != 0)
      75             :     {
      76           0 :         int const err(errno);
      77           0 :         SNAP_LOG_FATAL
      78           0 :             << "gettimeofday() failed with errno: "
      79             :             << err
      80             :             << " ("
      81           0 :             << strerror(err)
      82             :             << ")"
      83             :             << SNAP_LOG_SEND;
      84           0 :         throw event_dispatcher_runtime_error("gettimeofday() failed");
      85             :     }
      86             : 
      87          10 :     return static_cast<int64_t>(tv.tv_sec) * static_cast<int64_t>(1000000)
      88          10 :          + static_cast<int64_t>(tv.tv_usec);
      89             : }
      90             : 
      91             : 
      92             : 
      93             : /** \brief Get the current date.
      94             :  *
      95             :  * This function retrieves the current date and time with a precision
      96             :  * of nanoseconds.
      97             :  *
      98             :  * \return The time in nanoseconds.
      99             :  */
     100           0 : std::int64_t get_current_date_ns()
     101             : {
     102           0 :     timespec ts;
     103           0 :     if(clock_gettime(CLOCK_REALTIME_COARSE, &ts) != 0)
     104             :     {
     105           0 :         int const err(errno);
     106           0 :         SNAP_LOG_FATAL
     107           0 :             << "clock_gettime() failed with errno: "
     108             :             << err
     109             :             << " ("
     110           0 :             << strerror(err)
     111             :             << ")"
     112             :             << SNAP_LOG_SEND;
     113           0 :         throw event_dispatcher_runtime_error("clock_gettime() failed");
     114             :     }
     115             : 
     116           0 :     return static_cast<int64_t>(ts.tv_sec) * static_cast<int64_t>(1000000000)
     117           0 :          + static_cast<int64_t>(ts.tv_nsec);
     118             : }
     119             : 
     120             : 
     121             : 
     122             : 
     123           6 : } // namespace ed
     124             : // vim: ts=4 sw=4 et