Re: Posix Timers?

• Subject: Re: Posix Timers?
• From: Terry Lambert <email@hidden>
• Date: Mon, 7 Jan 2008 15:07:50 -0800
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Jan 5, 2008, at 8:53 AM, Andre-John Mas wrote:

Could someone tell me whether MacOS X supports POSIX timers?

If you mean the api specified in <http://www.jaluna.com/doc/c5/html/Overview/x5408.html > (just the first hit on google), then the answer would seem to be no:

$ find /usr/include -name '*.h'|xargs egrep 'clock_(settime|gettime| getres)|timer_(create|delete|settime|gettime|getoverrun)|nanosleep'
/usr/include/php/ext/standard/ basic_functions.h:PHP_FUNCTION(time_nanosleep);
/usr/include/php/main/php_config.h:/* Define if you have the nanosleep function. */
/usr/include/time.h:int nanosleep(const struct timespec *, struct timespec *) __DARWIN_ALIAS_C(nanosleep);

Only nanosleep seems to be there.

% grep TIMER /usr/include/unistd.h
#define _POSIX_TIMERS                   (-1)            /* [TMR] */

So no.

The proper way to feature test POSIX interfaces is:

-- Terry
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