Re: droped out precise time calculations in src/interfaces/libpq/fe-connect.c

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Joe Conway <mail(at)joeconway(dot)com>, Denis A Ustimenko <denis(at)oldham(dot)ru>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: droped out precise time calculations in src/interfaces/libpq/fe-connect.c
Date: 2002-10-14 15:58:27
Message-ID: 200210141558.g9EFwRw15251@candle.pha.pa.us
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Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> >> Already done -- that's what Denis is unhappy about.
>
> > OK, I see that, but now, we are stuffing everything into a timeval
> > struct. Does that make sense? Shouldn't we just use time_t?
>
> Yeah, the code could be simplified now. I'm also still not happy about
> the question of whether it's safe to assume tv_sec is signed. I think
> the running state should be just finish_time, and then inside the
> loop when we are about to wait, we could do
>
> current_time = time(NULL);
> if (current_time >= finish_time)
> {
> // failure exit
> }
> remains.tv_sec = finish_time - current_time;
> remains.tv_usec = 0;
> // pass &remains to select...

That whole remains structure should be a time_t variable, and then we
_know_ we can't assume it is signed. The use of timeval should
happen only in pqWaitTimed because it has to use select().

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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