As you have ascertained any recent time translated into milliseconds since 0:00 January 1 1979 UTC cannot be stored in a 32-bit integer. As you can imagine this is why the pj_time_val is stored into two 32-bit integers. Whether or not you should store it in a pj_time_val cannot be determined without knowing how you are going to use it. Using pj_time_val is convenient since there are lots of library functions for dealing with time_t. If you're doing lots of arithmetic between time values that require ms precision then in your particular case using int64_t (supposing your platform supports it) might be more convenient. One point here may be that the macro in question is useless if in all pjtools builds the pj_time_val has 32-bit integers inside it since it will always overflow. On 6/20/11 3:04 PM, Jorge wrote: > Thank you for your answer. > > The problem here is that I need msec so I am using milliseconds > through this macro : > > #define PJ_TIME_VAL_MSEC(t) ((t).sec * 1000 + (t).msec) > the output size is 32 bits so I am losing some resolution. > > **31 536 000** seconds so in msec 31 536 000 000 that is more that the > maximum value that can be stored inside a 32 bit variable. > > 2^32 = 4 294 967 296 > > Is it possible to store this value inside a 32 bits variable or should > I use a pj_time_val variable? > > Regards > > Jorge > > 2011/6/17 Jens Jorgensen <jbj1 at ultraemail.net > <mailto:jbj1 at ultraemail.net>> > > Generally speaking such values in seconds are in seconds since The > Epoch (Jan 1 1970 GMT). > > On 6/17/11 10:24 PM, Jorge wrote: >> Hello: >> >> I would like to delay a process so I am using this function to >> calculate the delay I should use pj_gettimeofday. I have read the >> documentation : >> >> pj_status_t >> <http://www.pjsip.org/pjlib/docs/html/group__PJ__BASIC.htm#gab43ba3167bd2a2ab4580509dbf79200e> >> pj_gettimeofday ( pj_time_val >> <http://www.pjsip.org/pjlib/docs/html/structpj__time__val.htm> >> * /tv/ ) >> >> Get current time of day in local representation. >> >> *Parameters:* >> >> /tv/ Variable to store the result. >> >> *Returns:* >> zero if successful. >> >> >> But what I don?t know which is the base time that this function >> is taken as a reference. Because if it is a day I will have a >> problem at 00:00 h at night. >> >> Could you say to me if it is taken as a reference an hour >> reference, a day reference or a year reference? >> >> Regards >> >> Jorge >> >> >> _______________________________________________ >> Visit our blog: http://blog.pjsip.org >> >> pjsip mailing list >> pjsip at lists.pjsip.org <mailto:pjsip at lists.pjsip.org> >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > > -- > Jens B. Jorgensen > jbj1 at ultraemail.net <mailto:jbj1 at ultraemail.net> > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org <mailto:pjsip at lists.pjsip.org> > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org -- Jens B. Jorgensen jbj1 at ultraemail.net -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110620/72687c58/attachment.html>
