Very Computer

Quote:>Solaris 2.4 (have to tryed with 2.3) gives back an error of
>two few argumants when using gettimeofday(struct timeval *tp)
>when using CC

        int gettimeofday(struct timeval *, void *);

and requires two arguments.

There's a bit of history behind this.  "gettimeofday()" first appeared
in 4.2BSD; it took two arguments there, a "struct timeval *" and a
"struct timezone *", and, if an argument was non-NULL, it filled in the
structure to which it pointed.  The only way to get time zone
information in 4.2BSD was to get it with "gettimeofday()" (or something
that used "gettimeofday()"; the second argument had to be non-NULL in
calls to get time zone information.

In System V, you get time zone information by calling "tzset()" and
fetching it from various global variables; SVR4 picked up
"gettimeofday()", but changed its calling sequence so that it only took
*one* argument, and didn't give back time zone information.

They prototyped it as

        int gettimeofday(struct timeval *);

rather than

        int gettimeofday(struct timeval *, ...);

which meant that BSDish calls would get compiler errors.

The group working on the "Single UNIX spec" put a bunch of BSDisms into
the spec, to make it easier to port BSDish code to systems implementing
the Single UNIX spec; one such BSDism was the notion of "gettimeofday()"
taking two arguments, although I think the Single UNIX spec says that
one should *ALWAYS* pass a NULL pointer as the second argument, and that
one has no guarantee whatsoever that such an OS will bother to fill in a
"struct timezone" whose address is passed as a second argument.

Quote:>Solaris 2.4 (have to tryed with 2.3) gives back an error of
>two few argumants when using gettimeofday(struct timeval *tp)
>when using CC

If you check /usr/include/sys/time.h you'll find:
int gettimeofday(struct timeval *, void *) ;

I think the second argument used to be : struct timezone *.

In any case you can just make it NULL, and everything will work fine.